УСТРОЙСТВО ДЛЯ ВЫСОКОЧАСТОТНОЙ ПЕРЕДАЧИ СЕТЕВЫХ ДАННЫХ ПО ЛИНИЯМ

Изобретение относится к системам передачи данных по электрическим линиям. Техническим результатом является повышение скорости передачи данных, передаваемых на большие расстояния по электрическим линиям. Технический результат достигается тем, что устройство для высокочастотной передачи сетевых данных по линиям содержит передатчик, приемник, модем и соединитель, расположенные в двух или более местах вдоль электрической линии, причем соединитель имеет емкостные цепи, последовательно подключенные к трансформатору с воздушным или диэлектрическим сердечником, при этом емкостные цепи входят в резонанс с трансформатором на заранее заданной частоте, а соединитель устраняет помехи и согласован с характеристическим импедансом линии на заранее заданной частоте. 3 н. и 40 з.п. ф-лы, 13 ил.

Способ принятия решения о присоединении электрического счетчика к другому электрическому счетчику или к концетратору данных

Группа изобретений относится к счетчикам в сетях снабжения электроэнергией. Технический результат – повышение надежности структуры сети связи. Для этого в иерархической сети связи, заданной поверх многофазной сети снабжения электроэнергией, первый электрический счетчик получает первую информацию о фазе, указывающую фазу, к которой подключен первый электрический счетчик в многофазной сети снабжения электроэнергией; получает вторую информацию о фазе, указывающую фазы, к которым в многофазной сети снабжения электроэнергией соответственно подключены устройства иерархической сети связи, каждое из которых является вторым электрическим счетчиком, к которому первый электрический счетчик может быть присоединен, или концентратором данных, который является корневым узлом иерархической сети связи; и выбирает устройство, к которому первый электрический счетчик должен быть присоединен с учетом по меньшей мере упомянутой первой информации о фазе и упомянутой второй информации о фазе. 3 н. и 7 з.п. ф-лы ...

СПОСОБ ПЕРЕДАЧИ СИГНАЛА ПО КАНАЛУ ЛИНИИ ЭЛЕКТРОПЕРЕДАЧ И МОДЕМ ДЛЯ ПЕРЕДАЧИ ДАННЫХ ПО ЛИНИИ ЭЛЕКТРОПЕРЕДАЧ

Изобретение относится к технике связи и предназначено для передачи данных по линии электропередач. Технический результат - повышение пропускной способности. Способ предназначен для передачи сигнала по каналу линии электропередач, в котором сигнал ОМЧР модулирован по набору поднесущих, упомянутые поднесущие разделены частотным разделением, упомянутый способ принимает сигнал шумов через канал линии электропередач, определяет соответствующие значения сигнала упомянутого принятого сигнала шумов с множеством узких полос частот с первой полосой пропускания разрешения, в котором упомянутая первая полоса пропускания разрешения меньше, чем упомянутое разделение частот, определяет первую полосу частот с нарушением из упомянутого множества узких полос частот на основе соответствующих значений сигнала и вырезает сигнал в упомянутой первой полосе частот с нарушением, перед передачей упомянутого сигнала. Также предусмотрен соответствующий модем для передачи данных по линии электропередач. 2 н. и 18 з.п ...

СПОСОБ И СИСТЕМА ПЕРЕДАЧИ ДАННЫХ

Изобретение относится к области передачи данных в энергосистеме и предназначено для более эффективного использования недетерминированных каналов передачи данных, для обмена операционными данными в режиме реального времени между удаленными местами и электростанцией. Канал передачи данных отслеживают на основе регулярного графика сети, то есть с помощью сообщений оценки или пакетов данных, которые переносят операционные данные в режиме реального времени, как полезное содержание. Постоянное определение качества канала, включая в себя выработку соответствующего сигнала тревоги, в случае, когда качество канала будет определено как недостаточное, основано на оценке в приемном узле пакетов данных, постоянно передаваемых приемным узлом. Такие постоянно или повторно передаваемые пакеты данных могут содержать идентичные полезные нагрузки, отражающие текущее состояние, вместо изменения состояния в качестве операционных данных. 2 н. и 8 з.п. ф-лы, 3 ил.

СПОСОБ И СИСТЕМА ПРИВЯЗАННЫХ МАРШРУТИЗАТОРОВ

Изобретение относится к области электротехники, в частности беспроводной связи, электрической сети и электрораспределительным сетям. Технический результат заключается в обеспечении эффективного покрытия беспроводной связи и/или дистанционной регистрации. Достигается тем, что устройство содержит: модуль подачи питания с возможностью извлечения электрической энергии из магнитного поля, окружающего электрический кабель, приемопередатчик с возможностью сообщения в транспортной сети связи, приемопередатчик для беспроводной локальной сети и/или блок дистанционной регистрации, и модуль управления, соединенный с возможностью сообщения с приемопередатчиком и/или блоком дистанционной регистрации, причем устройство установлено вокруг одиночного электрического кабеля электропередающей сети и/или электрораспределительной сети и выполнено с возможностью получения энергии от одиночного электрического кабеля. 2 н. и 15 з.п. ф-лы, 2 ил.

СПОСОБ ПЕРЕДАЧИ ДАННЫХ

Изобретение относится к системе для параллельной и эффективной передачи полезных данных различных услуг. При изменении характеристики услуги или качества передающего канала услугам для передачи полезных данных по передающему каналу предоставляется большая или меньшая мощность. За счет динамического согласования распределения мощности по услугам с учетом текущих характеристик, например изменяющейся скорости передачи данных или приоритета, даже в изменяющихся условиях достигается оптимальная эффективность. Если же доля мощности для определенной услуги не обеспечивает нужную эффективность, то это может вызвать отключение одной услуги или повышение ее доли мощности и, тем самым, отключение другой услуги. Техническим результатом является создание системы параллельной и эффективной передачи полезных данных разных услуг. 2 н. и 7 з.п. ф-лы, 4 ил.

ВЫСОКОЧАСТОТНЫЙ ЗАГРАДИТЕЛЬ

Полезная модель относится к высокочастотной связи по проводам линий электропередачи, используемой в области энергетики. Заградитель содержит силовой реактор (1) в виде катушки индуктивности, выполненной из монолитного провода (6) из токопроводящего материала с малым сопротивлением, формованного с образованием по крайней мере двух противоположно расположенных плоских поверхностей. Провод (6) устойчив к деформации при протекании по нему токов короткого замыкания (ТКЗ). Витки катушки размещены на реечном каркасе. Для исключения осевого смещение реактора (1) к крайним виткам катушки вплотную смонтированы крестовины (2), (3). Рейки (4) выполнены без пазов для витков. Надежное разделение витков при протекании ТКЗ обеспечивают вставки (5) между соседними витками. Рейки (4) и вставки (5) из электроизоляционного материала с высокой механической прочностью выполнены по простой технологии. Минимизирована механическая обработка электроизоляционных материалов. Для равномерного распределения нагрузки ...

Реактор высокочастотного заградителя

Полезная модель относится к высокочастотной связи по проводам линий электропередачи, используемой в области энергетики.Реактор высокочастотного заградителя состоит из катушки индуктивности с воздушным сердечником, сформированной намоткой монолитного токопроводящего провода, выполненного из медного или алюминиевого сплава и имеющего в сечении форму прямоугольника с предпочтительным соотношением длин узкой и широкой сторон 1:1,5. Монолитный токопроводящий провод снабжен обмоткой, выполненной из изолирующего тонкослойного материала, в качестве которого используют стеклоткань, или самослипающуюся силиконовую ленту, или базальтовую ткань, или стеклонить, которая покрывает поверхность монолитного токопроводящего провода по спирали с нахлестом. После намотки катушки индуктивности ее витки по высоте фиксируют продольными стяжками.Технический результат - увеличение добротности и снижение вносимых потерь в процессе использования реактора высокочастотного заградителя для передачи тока промышленной ...

ВЫСОКОЧАСТОТНЫЙ ЗАГРАДИТЕЛЬ

Полезная модель относится к высокочастотной связи, в частности к системам передачи информации по линиям энергоснабжения, а именно к высокочастотным заградителям, и может быть использована для ослабления влияния шунтирующего действия шин электроподстанции на параметры высокочастотного (ВЧ) тракта при обработке воздушных линий (ВЛ) электропередачи в целях передачи по их фазовым проводам и грозотросам сигналов противоаварийной автоматики, релейной защиты и телефонной связи на несущих частотах от 16 до 1000 кГц. Техническим результатом заявляемой полезной модели является обеспечение механической прочности реечного каркаса при воздействии на высокочастотный заградитель токов короткого замыкания. Для достижения указанного технического результата предлагается высокочастотный заградитель, содержащий параллельно соединенные между собой реактор, представляющий собой катушку индуктивности, выполненную из металлического провода, навитого на реечный каркас, элемент настройки, ограничитель перенапряжений ...

Устройство связи мультипротокольное для модуля управления наружным освещением

Полезная модель относится к технике передачи данных. Технический результат заключается в расширении функциональных возможностей, обеспечивая мультипротокольное использование устройства для приема и передачи информации в автоматизированной системе управления наружным освещением. Устройство содержит модем, вычислительный блок, первый вход-выход которого соединен с первым входом-выходом модема сотовой связи, выполненного в виде GSM 3G/4G(LTE) Cat-4-8 модема с поддержкой GPS/ГЛОНАСС, подключенного к вычислительному блоку по интерфейсу USB, модем mesh-сети Thread, выполненный с возможностью подключения его входа-выхода по интерфейсу UART ко второй группе входов-выходов вычислительного блока, а также блок автоматического подключения SIM-Card и Embedded SIM (MFF2), вход-выход которого соединен со вторыми входами-выходами модема сотовой связи. 1 ил.

СИСТЕМЫ И СПОСОБЫ ДЛЯ ИНДИВИДУАЛЬНОГО УПРАВЛЕНИЯ НАГРУЗКАМИ

Группа изобретений относится к системам управления. Способ индивидуального управления нагрузками заключается в следующем. Принимают измененный сигнал напряжения сети переменного тока, который изменяют путем введения множества задержек для передачи сообщения. Причем указанное множество задержек определяется разной величиной, и разные величины указывают на различные символы сообщения. Преобразуют при помощи фильтра переменного тока сообщения в измененном сигнале напряжения сети переменного тока в машиночитаемый формат. Определяют действие, связанное с сообщением, которое необходимо выполнить. Используют измененный сигнал напряжения сети переменного тока для выполнения действия в соответствии с сообщением. Также заявлены электрическое устройство для индивидуального управления нагрузками и система индивидуального управления нагрузками. Технический результат заключается в упрощении управления работой нагрузки, такой как осветительное устройство. 3 н. и 12 з.п. ф-лы, 11 ил.

УСТРОЙСТВО ДЛЯ ПОДАВЛЕНИЯ ПОМЕХ ВОЗНИКАЮЩИХ ПРИ ПЕРЕДАЧЕ ИНФОРМАЦИИ ПО ЛИНИЯМ ЭНЕРГОСНАБЖЕНИЯ

Полезная модель относится к электротехнике и может быть использована при защите от высокочастотных помех информационных сетей, работающих на основе сети линий электропередачи с использованием технологии PLC - передача сигналов по проводам электроснабжения.Устройство подавления помех предназначено для защиты от высокочастотных помех информационных сетей, работающих на основе сети линий электропередачи с использованием технологии «PLC» - передача сигналов по проводам электроснабжения. Соединение трех фаз сетевого кабеля в устройстве выполнено с замыканием в одной точке. Замыкание производится через емкости требуемой величины, которые соединяются с заземлением через индуктивность требуемой величины. Подавление высокочастотных помех обеспечивает реактивное сопротивление индуктивности требуемой величины. Применение заявляемого устройства поможет создать благоприятную среду передачи данных по сетям линий электропередач, таких как телеметрические показатели с проходческого комбайна и иных устройств ...

ВЫСОКОЧАСТОТНЫЙ ЗАГРАДИТЕЛЬ

Полезная модель относится к высокочастотной связи, в частности к системам передачи информации по линиям энергоснабжения, а именно к высокочастотным заградителям, и может быть использована для ослабления влияния шунтирующего действия шин электроподстанции на параметры высокочастотного (ВЧ) тракта при обработке воздушных линий (ВЛ) электропередачи в целях передачи по их фазовым проводам и грозотросам сигналов противоаварийной автоматики, релейной защиты и телефонной связи на несущих частотах от 16 кГц до 1000 кГц. Техническим результатом заявляемой полезной модели является обеспечение механической прочности реечного каркаса при воздействии на высокочастотный заградитель токов короткого замыкания. Для достижения указанного технического результата предлагается высокочастотный заградитель, содержащий параллельно соединенные между собой реактор, представляющий собой катушку индуктивности, выполненную из металлического провода, навитого на реечный каркас, элемент настройки, ограничитель перенапряжений ...

СХЕМНЫЙ МОДУЛЬ И УСТРОЙСТВО СВЯЗИ ПО ЛИНИИ ЭЛЕКТРОПЕРЕДАЧИ

Использование: в области электронной техники. Технический результат заключается в повышении надежности и защиты от шума. Схемный модуль монтируется с ИС, которая модулирует и демодулирует сигнал с несколькими несущими. Схемный модуль имеет многослойную плату, которая изнутри снабжается множеством проводящих слоев, уложенных с изолирующими слоями между ними, и ИС, которая снабжается множеством выводов заземления, которые нужно заземлить. Из множества проводящих слоев проводящий слой, представленный ближайшим к ИС, формирует слой заземления, электрически соединенный с множеством выводов заземления. 2 н. и 14 з.п. ф-лы, 39 ил.

Способ коммуникационного обеспечения туннелей и туннельная коммуникационная система

Группа изобретений относится к горному делу, а именно к способу коммуникационного обеспечения туннеля и туннельной коммуникационной системе. Способ коммуникационного обеспечения туннеля характеризуется тем, что в туннеле размещают по меньшей мере два приемо-передающих устройства. Одно из них размещают на расстоянии, не превышающем 1000 м от входа в туннель, и соединяют с наземной сетью. Другое приемо-передающее устройство размещают в зоне коммуникации. Приемо-передающие устройства соединяют между собой через силовой кабель длиной, не превышающей 700 м, напряжение которого находится в диапазоне 350…1200 В. Технический результат заключается в создании способа коммуникационного обеспечения туннеля и туннельной коммуникационной системы с повышенной технологичностью. 2 н. и 10 з.п. ф-лы, 1 ил.

ПОРТАТИВНАЯ ЭЛЕКТРОННАЯ СИСТЕМА, ВКЛЮЧАЮЩАЯ В СЕБЯ ЗАРЯДНОЕ УСТРОЙСТВО И СПОСОБ ЗАРЯДКИ ВТОРИЧНОЙ БАТАРЕИ

... 1. Портативная электронная система, содержащая первичное и вторичное устройства, причем первичное устройство имеет первую батарею, причем вторичное устройство представляет собой устройство для электрического нагрева табака, размера, сходного с размером обычной сигареты, причем упомянутое вторичное устройство содержит нагреватель, сконфигурированный для нагрева подложки, формирующей аэрозоль, первичное устройство содержит кожух, обладающий формой и размером, сходным с формой и размером обычной упаковки сигарет, причем упомянутое вторичное устройство сконфигурировано таким образом, чтобы оно помещалось в кожух первичного устройства во время цикла перезарядки, причем первичное устройство имеет первую батарею, батарею на оксиде лития-кобальта, а вторичное устройство имеет вторую батарею, батарею на фосфате лития-железа или титанате лития, причем емкость первой батареи в пять - сорок раз больше, чем емкость второй батареи, и при этом первичное и вторичное устройства сконфигурированы для перезарядки ...

СПОСОБ И УСТРОЙСТВО ДЛЯ ПЕРЕДАЧИ СИГНАЛОВ

... 1. Система передачи электрических сигналов, содержащая модулятор, демодулятор и канал передачи сигналов от модулятора к демодулятору, причем модулятор выполнен с возможностью приема информации и генерирования переменного сигнала с повторяющимися нарастающими и спадающими фронтами, в которых закодирована информация, причем кодирование осуществляется посредством промежутка времени между следующими друг за другом нарастающими фронтами и/или следующими друг за другом спадающими фронтами, а демодулятор выполнен таким образом, чтобы обнаруживать фронт сигнала, сохранять запись переменного сигнала вокруг этого фронта сигнала и сравнивать с этой записью последующую часть переменного сигнала для обнаружения одноименного фронта сигнала и определения промежутка времени между фронтом сигнала и одноименным ему фронтом сигнала. 2. Система передачи электрических сигналов по п.1, в которой запись имеет вид оцифрованной версии переменного сигнала. 3. Система передачи электрических сигналов по п.1, в которой ...

СПОСОБ ПРИНЯТИЯ РЕШЕНИЯ О ПРИСОЕДИНЕНИИ ЭЛЕКТРИЧЕСКОГО СЧЕТЧИКА К ДРУГОМУ ЭЛЕКТРИЧЕСКОМУ СЧЕТЧИКУ ИЛИ К КОНЦЕТРАТОРУ ДАННЫХ

... 1. Способ принятия решения о присоединении первого электрического счетчика (120) ко второму электрическому счетчику, служащему ретранслятором для упомянутого первого электрического счетчика в иерархической сети связи, заданной поверх многофазной сети снабжения электроэнергией (100), или к концентратору (110) данных, который является корневым узлом упомянутой иерархической сети связи, отличающийся тем, что первый электрический счетчик осуществляет следующие этапы:- получение (S401) первой информации о фазе, указывающей фазу, к которой подключен первый электрический счетчик в многофазной сети снабжения электроэнергией;- получение (S405) второй информации о фазе, указывающей фазы, к которым в многофазной сети снабжения электроэнергией соответственно подключены устройства иерархической сети связи, каждое из которых является электрическим счетчиком, к которому первый электрический счетчик может быть присоединен, или концентратором данных, когда первый электрический счетчик может быть к нему ...

Реактор высокочастотного заградителя

Изобретение относится к области электротехники, в частности к устройствам высокочастотной связи. Технический результат заключается в обеспечении равномерного симметричного токораспределения между слоями реактора и в упрощении технологии изготовления реактора высокочастотного заградителя. Достигается тем, что реактор высокочастотного заградителя, представляющий собой катушку индуктивности, выполненную из металлического провода, навитого на реечный каркас, обмотка реактора имеет по меньшей мере три слоя, выполненных по меньшей мере двумя непрерывными параллельными проводами, навитыми на каркас вдоль спирали, направленной вдоль главной оси катушки, причем намотка каждого слоя выполнена в направлении, противоположном направлению соседнего слоя. 1 з.п. ф-лы, 4 ил.

Схема высокочастотного тракта по кабельной линии электропередачи

Изобретение относится к области электросвязи и может быть использовано при организации высокочастотных каналов передачи информации по фазным проводам кабельных линий электропередачи (КЛ) без транспозиции экранов кабелей в КЛ. Технический результат заключается в повышении эксплуатационной надежности и расширении возможности создания каналов ВЧ. Согласно изобретению схема высокочастотного тракта по кабельной линии электропередачи с заземлением экранов высоковольтных кабелей с одной стороны без их транспозиции содержит высокочастотный кабель, выход которого соединен с входом устройства присоединения, а выход устройства присоединения соединен с фазой одного из высоковольтных кабелей кабельной линии электропередачи, на разомкнутом конце экранов кабельной линии электропередачи дополнительно введен двухполюсник, один вывод которого соединен с изолированным экраном высоковольтного кабеля кабельной линии электропередачи, а другой вывод соединен с контуром заземления по крайней мере для одного высоковольтного ...

АВТОМАТИЗИРОВАННАЯ СИСТЕМА УПРАВЛЕНИЯ ДЛЯ ДОМОВ

Изобретение относится к системам управления. Автоматизированная система управления для домов, обеспечивающая возможность управления электрическими и электронными устройствами, установленными в доме, содержит сервер для каждого дома, клиентские устройства, расположенные в каждом помещении автоматизируемого дома. Клиентские устройства подсоединены к проводам электрической распределительной коробки системы электропроводки дома и содержат переднюю часть, содержащую датчики, исполнительные органы, второй блок связи по электросети, трансформатор и микроконтроллер. Причем передняя часть присоединена к соединительной колодке, присоединенной к проводам электрической распределительной коробки. Клиентские устройства и сервер имеют возможность питания от электросети дома и установления взаимной связи друг с другом по этой электросети. Клиентские устройства передают в сервер информацию от датчиков об изменениях, происходящих в помещении, в котором они установлены. Сервер на основе полученной информации ...

Способ приема и передачи информации по линии электропередачи переменного тока

Использование: в области электротехники для дистанционной передачи команд управления технологическим оборудованием. Технический результат заключается в упрощении функций передающего и принимающего модулей и в уменьшении влияния процесса передачи информации на сеть электропитания. Способ включает передачу команд управления технологическим оборудованием путем формирования в момент перехода переменного напряжения линии электропередачи через ноль временного интервала, характеризующегося нулевым уровнем напряжения. Передачу осуществляют в виде отдельных бит информации, причем при передаче бита, соответствующего двоичной единице в передающем модуле, выполняют модуляцию переменного напряжения линии электропередачи, а именно, в момент перехода переменного напряжения линии электропередачи через ноль осуществляют формирование короткого временного интервала фиксированной длительности, характеризующегося нулевым уровнем напряжения, а при передаче двоичного нуля модуляцию переменного напряжения не выполняют ...

СПОСОБ ПОДВЕШИВАНИЯ ВЫСОКОЧАСТОТНОГО ЗАГРАДИТЕЛЯ И ВЫСОКОЧАСТОТНЫЙ ЗАГРАДИТЕЛЬ.

Использование: в области электротехники. Технический результат - повышение надежности работы высокочастотной защиты (ВЧЗ) и воздушной линии электропередач (ВЛ). Высокочастотный заградитель на конструкциях опор воздушных линий электропередачи и линейных порталах подстанций с целью предотвращения его колебательных и вращательных движений фиксируют крепежными конструкциями на подвеске, представляющей собой две проходящие через тело реактора параллельные ветви из линейной арматуры, чередующейся с изоляторами, сходящиеся вне тела реактора через универсальное коромысло в одну ветвь, и крепят на опоре концами двух параллельных ветвей подвески с одной стороны и единым концом подвески к проводу воздушной линии электропередачи с другой стороны таким образом, чтобы ось вращения реактора высокочастотного заградителя располагалась соосно с проводом воздушной линии электропередачи, соединяют шлейфами контакты высокочастотного заградителя и воздушной линии электропередачи. Контакт между проводами шлейфа ...

МНОГОТОЧЕЧНАЯ СИСТЕМА УПРАВЛЕНИЯ

... 1. Многоточечная система управления, содержащая устройство дистанционного управления и множество локальных устройств управления, при этом каждое из локальных устройств управления подключено к общей системной шине, а устройство дистанционного управления выполнено с возможностью широковещательной передачи команд выбранным группам упомянутых локальных устройств управления и с возможностью приема информации о состоянии, включая информацию, необходимую для синхронизации работы подсистем локальных устройств управления, причем эти подсистемы содержат домкраты, а информация, необходимая для синхронизации, содержит информацию о высоте, достигнутой домкратом, связанным с каждым локальным устройством управления, отличающаяся тем, что каждое локальное устройство управления снабжено входом, к которому может быть подключено устройство дистанционного управления, так что устройство дистанционного управления может быть подключено к любому локальному устройству управления в системе. 2. Система по п. 1, отличающаяся ...

СИСТЕМА РЕТРАНСЛИРОВАНИЯ СИГНАЛА - УСТРОЙСТВО ДЛЯ СТАБИЛЬНОЙ ПЕРЕДАЧИ ДАННЫХ

... 1. Система ретранслирования сигнала для электроэнергетических сетей с одним или более главными (магистральными) кабелями, которые имеют распределительные кабели для абонентов, ! отличающаяся системой ретранслирования сигнала на каждом главном кабеле, содействующая протоколу физического уровня и протоколу для полнодуплексной связи с узлами связи в точках распределения вдоль в/у главного кабеля и, по крайней мере, одним из в/у узлов связи, содействующий, по крайней мере, одному модему для в/у дуплексной связи, где в/у модем имеет интерфейс, содействующий соединению к вторичным устройствам связи. ! 2. Система ретранслирования сигнала по п.1, ! отличающаяся, по крайней мере, одним из в/у узлов связи, соединеным с распределительной линией абонента через IP интерфейс и протокол физического уровня с расширенным спектром, используя полудуплексную связь. ! 3. Система ретранслирования сигнала по п.1, ! отличающаяся связью на в/у главных кабелях, которая использует технологию кабельного модема вдоль ...

ПОДВОДНАЯ СИСТЕМА ОБМЕНА ДАННЫМИ И СПОСОБ ОБМЕНА ДАННЫМИ

... 1. Подводная система обмена данными для обеспечения обмена данными между надводной системой (11) управления и подводной установкой (12), в которой надводная система (11) управления содержит надводный низкочастотный модем (21), адаптированный для выполнения обмена данными в первом частотном диапазоне, и в которой подводная установка (12) содержит подводный низкочастотный модем (22), адаптированный для выполнения обмена данными в указанном первом частотном диапазоне, причем указанный надводный низкочастотный модем (21) соединен с подводным низкочастотным модемом (22) линией (14) передачи данных шлангокабеля (13), который соединяет надводную систему (11) управления с подводной установкой (12),где подводная система (10) обмена данными содержит:надводный высокочастотный модем (31), адаптированный для компоновки в надводной системе (11) управления и выполнения обмена данными во втором частотном диапазоне, причем частоты второго частотного диапазона больше частот первого частотного диапазона,подводный ...

HYBRIDES VERTEILUNGSNETZWERK ZUR ELEKTRIZITÄTS- UND NACHRICHTENÜBERTRAGUNG

LOKALES NETZWERK ZUR IMPLEMENTIERUNG EINER NIEDERSPANNUNGSSTEUERUNG

Auslagerung von Funktionalität eines öffentlichen Telefons in einen vorgeschalteten Server

Parametrierung einer intelligenten Einheit über Spannungsversorgungseinrichtung

Anordnung zur Anpassung wenigstens einer intelligenten Einheit (100) an eine Applikation und/oder einen Einbauort der intelligenten Einheit innerhalb einer Automatisierungsanlage, wobei die Anordnung eine Spannungsversorgungseinrichtung (200, 250) umfasst, an welche wenigstens eine intelligente Einrichtung (100) zum Betreiben der intelligenten Einheit (100) für eine bestimmte Applikation und/oder einen bestimmten Einbauort innerhalb der Anlage anzuschließen ist, und eine Konfigurationseinrichtung (300) umfasst, welche dieser Applikation und/oder diesem Einbauort der wenigstens einen anzuschließenden intelligenten Einheit (100) zugeordnet ist, wobei in der Konfigurationseinrichtung (300) applikations- und/oder ortsbasierte Konfigurationsdaten und/oder Verhaltensbeschreibungsdaten gespeichert sind, die nach Anschluss der intelligenten Einheit (100) von der Konfigurationseinrichtung an eine Logik (190) zum Verarbeiten der Daten zur Konfiguration und/oder Parametrierung dieser intelligenten ...

ELEKTRONISCHES STEUERUNGSVERFAHREN

Steuergerät für stromgesteuerten Bus

Elektronisches Steuergerät (105), das folgendes umfasst: einen Busanschluss (125) zur Verbindung mit einer Busleitung (120) eines stromgesteuerten Busses (115); eine Auswerteeinrichtung (145) zur Abtastung des durch den Busanschluss (125) fließenden Stroms, um eine digitale Nachricht eines mit der Busleitung (120) verbindbaren Sensors (110) zu erfassen; eine Stromsteuerung (135) zur Erzeugung eines vorbestimmten Stromimpulses durch den Busanschluss (125), um den Sensor (110) in einen vorbestimmten Synchronisationszustand zu versetzen; wobei die Stromsteuerung (135) dazu eingerichtet ist, den Strom durch den Busanschluss (125) derart zu steuern, dass er einem Betriebsstrom durch den Sensor (110) entspricht, dadurch gekennzeichnet, dass die Auswerteeinrichtung (145) eine Stromquelle (160) zur Bereitstellung eines durch den Busanschluss (125) fließenden Stroms umfasst und die Stromsteuerung (135) dazu eingerichtet ist, den bereitgestellten Strom zu verändern, um den Sensor (110) zu simulieren ...

System zur Datenübertragung von einem Sender an einen Empfänger und Verfahren zum Betreiben eines Systems

Halbwellensteuerungssystem zur Datenübertragung von einem Sender an einen Empfänger,wobei der Empfänger mit einer ein- oder mehrphasigen Wechselspannung versorgt ist,wobei der Empfänger einen Signaleingang aufweist,wobei der Empfänger einen Gleichrichter aufweist, welchem die Wechselspannung zugeführt wird und welcher ausgangsseitig eine unipolare Spannung zur Verfügung stellt,wobei zumindest ein Schaltschwellen-bestimmendes Mittel gespeist ist aus einem Spannungsteiler, der zwischen dem Signaleingang und einem Potential (UZ+) der unipolaren Spannung angeordnet ist,wobei die am Schaltschwellen-bestimmenden Mittel (GL1) anliegende Spannung einen Ausgang (out-) des Empfängers bestimmt,wobei zumindest ein weiteres Schaltschwellen-bestimmendes Mittel (GL2) gespeist ist aus einem weiteren Spannungsteiler, der zwischen dem Signaleingang und dem anderen Potential der unipolaren Spannung (UZ-) angeordnet ist,wobei die am weiteren Schaltschwellen-bestimmenden Mittel anliegende Spannung einen weiteren ...

Netzwerk zur Daten- und Energieübertragung

VERFAHREN UND VERSORGUNGSLEITUNGSSTRUKTUR ZUR ÜBERTRAGUNG VON INFORMATIONEN ZWISCHEN ELEKTRISCHEN KRAFTFAHRZEUGKOMPONENTEN

Transmission of information via the earth wires of high-voltage overhead lines

There is normally no communications link between the tower locations of a high-voltage overhead line and the nearest switching station. In order to set up a link of this type, an additional communications cable would have to be laid as an overhead or underground cable or a communications cable already in place would have to be looped into the tower. The cost of this is considerable. These difficulties are overcome with the present invention in that it allows a signal comprising pulse-modulated direct currents to be transmitted from the tower location to the switching station via the earth wire or lightning conductor.

Ansteuerung von Leuchtmitteln über deren AC-Versorgungsspannung

Betriebsgerät für Leuchtmittel, wobei:- das Betriebsgerät einen Eingang für eine AC-Leistungsversorgung aufweist, ausgehend von der angeschlossene Leuchtmittel mit elektrischer Leistung versorgbar sind, und- eine Steuereinheit auswertet, ob eine an dem Eingang anliegende Spannung eine bipolare AC-Spannung oder eine gleichgerichtete AC-Spannung ist, und- die Steuereinheit auswertet, welche Polarität die gleichgerichtete AC-Spannung aufweist,- die Steuereinheit dazu ausgelegt ist, das Ergebnis der Auswertung als ein extern eingehendes Signal zu verwenden.

Schaltungsanordnung zum Empfang von ueber Leitungen mit hohem Stoerpegel traegerfrequent uebertragenen, amplitudenmodulierten Signalen, insbesondere von ueber Hochspannungsleitungen uebertragenen Fernwirksignalen

NETZLEITUNGSÜBERTRAGUNGSSYSTEM

Vorrichtung zur MIMO-Einkopplung von Powerline-Signalen über zwei Kanäle in ein Dreileiter-Stromversorgungsnetz

Die vorliegende Erfindung betrifft eine Vorrichtung zur Kopplung eines Modems an ein Stromversorgungsnetz zur Übertragung von Daten über das Stromversorgungsnetz, umfassend einen Netzanschluss, welcher dazu eingerichtet ist, die Vorrichtung mit einem Phasenleiter, einen Neutralleiter und einen Schutzleiter des Stromversorgungsnetz zu verbinden, wobei die Vorrichtung ein erstes Transformatorelement umfasst, umfassend eine primärseitige Wicklung, eine erste sekundärseitige Wicklung und eine zweite sekundärseitige Wicklung, und wobei die Vorrichtung ein zweiten Transformatorelement umfasst, umfassend eine primärseitige Wicklung, eine erste sekundärseitige Wicklung und eine zweite sekundärseitige Wicklung.

System und Verfahren zur Kommunikation über eine mehrphasige Mittelspannungsstrecke sowie Netzwerk und Steuereinheit

Ein System zur Kommunikation über eine mehrphasige Mittelspannungsstrecke (10) mittels Breitband-Powerline BPL ist angegeben, wobei für jede Phase der Mittelspannungsstrecke (10) ein Mittelspannungskabel (11, 11', 11'') vorgesehen ist. Das System umfasst: mehrere BPL-Modems (12, 12', 12'', 13, 13', 13'') wobei die BPL-Modems (12, 12', 12'', 13, 13', 13'') jeweils mit einem der Mittelspannungskabel (11, 11', 11'') verbunden und zum Senden und Empfangen von Datenpaketen über das jeweils verbundene Mittelspannungskabel (11, 11', 11'') ausgebildet sind, und eine Steuereinheit (14, 15), die kommunizierend mit mindestens zwei der BPL-Modems (12, 12', 12'', 13, 13', 13'') an einer Seite der Mittelspannungsstrecke (10) verbunden ist, wobei die Steuereinheit (14, 15) eine Uplink-Schnittstelle (16, 17) ausweist und wobei die Steuereinheit (14, 15) dazu ausgebildet ist, basierend auf einem Regelsatz ein über die Uplink-Schnittstelle (16, 17) empfangenes Datenpaket an mindestens eines der verbundenen ...

Verfahren und System zur Unterdrückung eines Störsignals bei der Detektion eines Chirp-Signals

Die Erfindung betrifft ein Verfahren zur Unterdrückung eines Störsignals bei der Detektion eines Chirp-Signals aus einem Eingangssignal (X) und umfasst folgende Schritte:a. Aufnehmen des Eingangssignals (X);b. Berechnung eines Ausgangssignals (R1) als Korrelation aus dem aufgenommenen Eingangssignal (X) und einem Chirp-Referenzsignal (CR) mittels eines Korrelators (30);c. Berechnung eines Betrags (XB) des Eingangssignals (X) aus dem Eingangssignal (X);d. Berechnung eines Betrags (R1B) des Ausgangssignals (R1) aus dem Ausgangssignal (R1);e. Berechnung einer Phasendifferenz (P) zwischen dem Eingangssignal (X) und dem Ausgangssignal (R1);f. Berechnung eines synthetisierten Störsignals (R2) aus dem Betrag (XB) des Eingangssignals (X), dem Betrag (R1B) des Ausgangssignals (R1) und der Phasendifferenz (P) mittels eines Rotators (60);g. Berechnung eines Residualsignals (DR) als Differenz aus dem Ausgangssignal (R1) und dem synthetisierten Störsignal (R2).Die Erfindung betrifft ein System (10) ...

Power line communications system for high bit rate data communications passes noisy channel parameters over basic channel, adapts noisy communications to channel parameters

The system has one or more high frequency ranges for data communications, each with at least one channel and at least one suitable for high bit rate data communications and a channel estimation arrangement. If the channels are too noisy for high bit rate communications a basic connection is first used to pass channel parameters for the noisy channels and to adapt the type of noisy high bit rate communications to the applicable channel parameters.

Verfahren zum Synchronisieren von Übertragungssystemen für Energieversorgungsnetze

Die Übertragungssysteme (PLC1, 2) werden durch einen gemeinsamen Rundsendekanal (RK) synchronisiert und der Rundsendekanal (RK) ist durch ein gespreiztes Kodesignal (ks) realisiert. Vorteilhaft wird das gespreizte Kodesignal (ks) durch ein CDMA-kodiertes Kodesignal gebildet. Durch die Verwendung eines gespreizten Kodesignals (ks) kann mit niedriger Leistung und besonders unempfindlich gegen Störungen im Rundsendekanal (RK) gesendet werden.

Broadcast channel testing

Testing a broadcast channel in which information is transmitted within a synchronous area of an electric power grid (100), whereby a characteristic relating to a frequency of power flowing in the electric power grid (100) is measured at a test receiver (121) and a signal based on a frequency modulation of the grid frequency is extracted from the electric power grid, and data indicative of a characteristic of the signal is sent to a control node (122) via a channel separate from the broadcast channel. Within the electrical power grid (100) there are transmitters (118) for transmitting information under control of a controller (122), and receivers (120) for receiving the information, such that the electric power grid (100) acts as a broadcast channel, and information is encoded by frequency modulation superimposed on the grid power frequency. Across the synchronous area of the electric power grid (100) the power frequency may be assumed to be essentially constant, such that the transmission ...

SECTIONAL LAMINATED STRUCTURAL SYSTEM FOR AREA DISTRIBUTION OF ELECTRICAL POWER AND SIGNAL ENERGY

... 1394878 Distribution boards DOLE ELECTRO-SYSTEMS Inc 19 Sept 1972 [21 Oct 1971 5 July 1972] 43405/72 Heading H2E [Also in Division H4] A distribution system comprises a plurality of panels 10 electrically interconnected edge to edge, each panel consisting of alternate superposed layers of conducting and insulating material, and coupling means 86 connectible to the conducting layers at freely chosen locations on the panels. As shown, each panel has three insulating layers 30, 32, 34 of wood or plastics, two internal conducting layers 26, 28 adapted for connection to a mains supply and/or a communications system, and outer conducting layers 36, 38 joined by an edge strip 40 which serve for earthing and mechanical protection. The layers 26, 28 may be of copper, aluminium, or steel sheet, foil or mesh and terminate short of the edges of the layers 30, 32, 34; the layers 36, 38 and strip 40 have a plastics coating (41, Fig. 4). Interconnection of adjacent panels (Fig. 5) is effected by edge ...

Methods and systems for communicatively coupling vehicles and ground systems

FM SIGNAL TRANSMISSION AND RECEPTION

Digitally generated communication on power based on separately modulated power and data signals

Artifial lift equipment power line communication

A power socket terminal

Automatic control system and apparatus

Space time coded data transmission via inductive effect between adjacent power lines

Space time coded data is transmitted via electricity mains by sending data encoded with some redundancy ("time diversity") from one modem down one conducting line which interacts inductively with adjacent conducting lines to provide further replication of itself ("space diversity"). The effects of induction on parallel conductors will cause all receiving modems to receive some of the signal, necessitating an identifier (eg. header) of the intended recipient to form part of the signal. A handshake procedure employing test signals is used to establish the nonlinearity of the frequency response and time domain response of the link, and appropriate coding and selected combinations of frequency channels and time slots involving different conducting lines are chosen to optimise communication (fig 3), thus providing diversity in an analogous manner to mobile telephone communication via multiple antennas. A filter is used to minimise "mains hum", ie. signals at electricity supply ...

Communications system

Powered device interface circuit

Signalling method and apparatus

Power supply for a radio transceiver from an electric fence and data transmission for animal monitoring

A system for transferring data from at least one mobile station (107) to a central station (100), the system comprises a plurality of remote nodes (105) or radio transceiver. Each node (105) receives wirelessly, data from at least one mobile station (107); and a wire (electric) fence (103) connected to each of the plurality of nodes (105) and said central station (105) transfers the received data from each of the plurality of remote nodes (105) to the central station (100). Each node (105) is powered by the electric fence (103).

TDMA power line communication transceiver using amplifier with reverse direction bypass

An amplifier arrangement 530 for use in a time-division duplexed communications path 401 in which signals flow in first and second directions along the path during different time periods. The arrangement comprises an amplifier 510 for providing gain in the first direction of signal flow and a bypass path across the amplifier to enable signal flow in the second direction to bypass the amplifier.

Transmission network and filter therefor

Redundant powered device circuit

Well tool sensor

An electronic recording device and multiple sensors for measuring various parameters at locations remote from the recording device. The multiple sensors can be joined together to comprise a downhole tool for measuring various parameters within a well bore and transmitting information concerning each parameter to the recording device via a single conductor electrical wireline. The embodiment disclosed within this patent measures the parameters of pressure, temperature, flow rate plus direction, and collar location. A wide variety of sensors can be included within the downhole tool to measure additional parameters as desired. This invention allows the multiple sensors to measure various parameters at any location remote from the recording device and to transmit information concerning each parameter to the recording device on single conductor electrical line as a composite signal.

Two wire communication system

A two wire communication system capable of transmitting data and transferring power by means of an electrical bi-polar waveform across a two wire conductor from a controller in communication with said two-wire conductor to at least one module in communication with said controller and capable of transmitting data from said module to said controller; and a remote electrical device in communication with said controller. Usable data may be continuously transmitted across said two wire conductor independent of and during power transmission between the controller and the at least one module without loss of data transmission time and without affecting the transfer of power to the at least one module. The data is transmitted across the two wire conductor to the modules by pulse duration signals at the same time power is transmitted to said modules. The system is capable of using up to 100 % of transmission time to transmit data without affecting transfer of power to the at least one module.

Apparatus for transmitting signals

Apparatus for transmitting signals, particularly in underground mines, using existing networks of security current cables (4) of the coaxial kind, transmits high frequency signals, both from a transmitting centre (2) to various receiving stations (10) located at existing lighting units (8), and from any receiving station (10) to other receiving stations (10) and back to the transmitting centre (2), to operate optical and acoustic warning means (13, 14). The transmitters inductively couple high frequency signals onto the cables (4), the signals being superimposed on the AC power in the cables. ...

IMPROVEMENTS IN OR RELATING TO SIGNAL TRANSMISSION

Method of amplifying three phase high frequency power

... 266,328. Wired Radio, Inc., (Assignees of Salmons, G. C.). Feb. 20, 1926, [Convention date]. Thermionic amplifiers; thermionic modulating systems; wired-wireless systems.-Three phase high frequency power is amplined by a pair of valves 18, 19 connected in balanced relationship with open delta input and output transformers 9, 10 and 20, 21. As shown in Fig. 3, the input transformer windings 9, 10 are placed in a rotating magnetic field established by the phase displacing circuit 53 associated with a single phase source 52. Modulation is effected by means of the choke 60 and valves 61, 62 with associated microphone circuits. Alternatively grid modulation may be em. ployed. The output secondary inductances 71, 72 are connected to a power transmission line 30 through variable inductances 73, 74 and variable condensers 75, 76, 77. In a modification. Fig. 2, the output is applied through an additional transformer 36, 37, 38 and 43, 44, 45 so that a star connection is made to the line 30.

Signalling method

Improvements in or relating to two-way communication methods, systems and apparatus

... 490,281. Telephony over power circuits ; distributing music &c. INTERNATIONAL CARRIER - CALL & TELEVISION CORPORATION. Nov. 9, 1936, No. 30509. Convention date, May 23. [Class 40 (iv)] [Also in Group XL] A combined carrier-frequency transmitter and receiver for loud-speaking telephonic communication over power or other lines comprises an instrument acting as a microphone or loud-speaker, a valve circuit operating alternatively as a modulated carrierfrequency transmitter or as a demodulator, and an amplifier, the circuit changes for transmitting and receiving being effected by switches. Transmitting. The rotary switch S is turned one step clockwise from the position shown thereby connecting loud-speaker LS, acting as a microphone, to the input of an amplifying valve VI the output of which is fed to modulating grid 4 of carrier-frequency generator V2 which is coupled by tuned transformer IC to amplifier V3 the output of which is connected over tuned transformer OT to the power line L. Condensers ...

Downhole network interface unit for monitoring and control

A downhole networking interface unit provides conversion between multiple native format signals of downhole instruments to power line communication messages exchanged with a controller positionable at the surface of a wellbore. Certain aspects and features provide methods of power line communication. In one aspect, a computing device may send and receive messages in a power line communication format over a cable to and from at least one downhole device. The computing device may send and receive messages in the power line communication format to and from a network interface unit that can be coupled to the cable. The network interface unit may have multiple interfaces for communicating downhole using differing types of native signals for differing types of downhole devices such as sensor, instruments, and inductive couplers.

Communication methods and systems

Multi-gauge communications over an esp power bus

Power line communication device with DC power output and network signal transmission abilities

Powerline interface communication

Magnetic field based power transmission line communication method and system.

A method and system for communicating information between subscribers (20, 22, 24)over power lines (26)where the information is transmitted in the magnetic field component of the elctromagnetic radiation carried over the power line (26)and the field is excited by a maser (50)inorder to enable communication between the subscribers (20, 22, 24)at the various electrical sites. The maser (50)provides an inverted atomic population by pumping directly, through a q-switch (58)and a synthetic aperture lens (60), into the atomic population of the electromagnetic wave carried over the power line (26)to produce acoustic wave oscillation at the appropriate atomic transition frequency. The maser (50)output is transmitted within the within existing magnetic flux envelope created by the magnetic field and the power line (26)acts as a magnetic waveguide for the coherent magnetic frame emission from the maser (50). Inductive coupling is used to receive the transmitted information.

System for controlling a plurality of loads connected to a common electrical AC voltage supply line

System for controlling a plurality of loads 1-4, in particular luminaires, connected to a common electrical AC voltage supply line, in particular a busbar 5, having a common control part, which contains an input unit 18- 21, a memory 16' and a control transmitter 8, and having receivers 9-12, which are assigned to individual loads or load groups and have a memory 22' for addresses associated with them and drive power switches 26 in connecting lines to the loads in accordance with control signals received from the control transmitter, the control transmitter 8 transmitting, as control signals, data bits via the AC voltage at the time of the zero crossings of the AC voltage; the control transmitter 8 drives a switch S, provided in the supply line 6 to the loads 1, 2, 3, 4, in order to switch the AC voltage to zero in the event of zero crossings, different zero time durations being provided for different bits. ...

TRANSFER EQUIPMENT FOR THE APPLICATION IN A DISTRIBUTION OF ELECTRICITY NETWORK

COMMUNICATION PROCEDURE AND - VORRICHTING

MORE TRANSCEIVER AND COMMUNICATION PROCEDURES FOR DIGITAL MULTI-CARRIER COMMUNICATION

PROCEDURE AND MODEM FOR DATA COMMUNICATION IN CABLE TELEVISION NETWORKS

DOOR INTERCOMMUNICATION SYSTEM WITH INSTALLATION ARMS HOUSING SUBSTATIONS

PROCEDURE FOR THE REGULATION OF KANALQUALITAT AND MODEM

SENDEEINRICHTUNG FUR EINE TONFREQUENTE RUNDSTEUER-NETZUBERLAGERUNGS-FERNSTEUERANLAGE

PROCEDURE FOR THE DATA COMMUNICATION BETWEEN A PUMP UNIT AND CONTROL EQUIPMENT AS WELL AS AN ACCORDINGLY TRAINING PUMP SYSTEM

POWER LINE EXPENSIVE SYSTEM

SYSTEM AND PROCEDURE FOR THE IMPEDANCE MONITORING

PROCEDURE FOR THE OPERATION AS WELL AS USE OF A STATIC FREQUENCY CHANGER AS ACTIVE ONE AUDIO FREQUENCY BARRIER

CIRCUIT MODULE AND POWERLINE COMMUNICATION DEVICE

SYSTEM FOR STEERING SEVERAL CONSUMERS ATTACHED TO A COMMON ELECTRICAL ALTERNATING VOLTAGE SUPPLY LINE

TRANSMISSION MECHANISM FUR A CLAY-FREQUENT RUNDSTEUER NETZUBERLAGERUNGS FERNSTEUERANLAGE ONE

PROCEDURE FOR THE OPERATION OF A TRANSMISSION SYSTEM AND A TRANSMISSION SYSTEM IN A ENERGIEVERSORGUNGSNETZ

DATENÜBERTRAGUNGSSYSTEM

INSTALLATION FOR THE DISTRIBUTION OF DIGITAL SIGNALS

DATENÜBERTRAGUNGSSYSTEM

Steuervorrichtung und Verfahren zur Datenübertragung über eine Lastleitung

A data transmission from a control device (100) to a load (52) is carried out via a load line (40). The control device (100) comprises a first switching means (121) and a second switching means (122) which are switched in a series circuit between an input terminal (101) and an output terminal (102) of the control device (100). A control circuit (110) is coupled to the first switching means (121) and the second switching means (122) and is configured to generate a control signal (ctrl) for controlling the first switching means (121) and/or the second switching means (122) so as to transmit data bits.

PROCEDURE AND PLANT FOR THE REALIGNING AND STEUERUEBERTRAGUNG ON A SUPPLY NETWORK FOR ALTERNATING CURRENT.

SCHALTUNGSANORDNUNG ZUR ÜBERTRAGUNG VON KLEINEN, ENERGIEARMEN UND GROSSEN, WESENTLICH ENERGIEREICHEREN SIGNALEN

Switching configuration for sending and receiving, in particular low-frequency electrical oscillations.

Stromzähler zum Aufzeichnen des elektrischen Energieverbrauchs und ein Anpassungsmodul dafür

Ein Stromzähler (1), umfasst: eine Zähleinheit (2) zum Bestimmen des Stromverbrauchs; eine Kommunikationseinheit (3) zum Kommunizieren von Datensignalen innerhalb eines Kommunikationsbandes über eine Stromverkabelung; und eine Verarbeitungseinheit zum Steuern der Zähleinheit (2) und der Kommunikationseinheit (3); wobei die Kommunikationseinheit (3) dazu ausgelegt ist, das Kommunikationsband an die Kommunikationsumgebung anzupassen.

Betriebsschaltung, Betriebsgerät, Beleuchtungssystem und Verfahren zum Betreiben wenigstens einer Leuchtdiode

A lighting system comprising an operating device for at least one light-emitting diode (5), an LED module which is connected to the operating device (70, 80), a source (2; 60, 61) which is set up to provide the DC supply voltage (41), a DC bus (3) which connects the operating device (70, 80) and the source (2; 60, 61), a receiving unit (30) for receiving digital light control signals according to a predefined protocol, preferably according to the DALI standard, and a modulator (4; 66) for modulating the control signals (42, 44) onto the DC supply voltage (41), wherein the modulator (4; 66) modulates the control signals (42, 44) onto the DC supply voltage (41) on the basis of the current level of the digital light control signals received by the receiving unit (30).

Communication arrangement in high voltage overhead line nets

Устройство для учета информации о расходе электроэнергии и ее передачи в защищенном некорректируемом виде

Техническое решение относится к области электроэнергетики, в частности к средствам контроля и учета расхода электроэнергии. Устройство учета и передачи информации о расходе электроэнергии содержит корпус с конструктивно и функционально объединенными в нем прибором для учета расходов электроэнергии переменного или постоянного тока, центральным процессором, блоком часов реального времени (в варианте исполнения 2), блоком защиты информации, выполненным с возможностью криптографического преобразования информационных пакетов, поступающих от прибора учета, блоком внешнего взаимодействия, реализующим протоколы информационного обмена с внешними информационными системами, причём прибор для учета расходов электроэнергии, центральный процессор, блок часов реального времени, блок защиты информации и блок внешнего взаимодействия соединены последовательно. Технический результат, на достижение которого направлено предлагаемое техническое решение, заключается в повышении степени защиты от искажения передаваемой информации во внешнюю сеть, полученной в результате измерения узлом учёта расхода электроэнергии. 1 з.п. ф-лы, 2 ил. РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 171 209 U1 (51) МПК H04B 3/54 (2006.01) H02J 13/00 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ФОРМУЛА ПОЛЕЗНОЙ МОДЕЛИ К ПАТЕНТУ РОССИЙСКОЙ ФЕДЕРАЦИИ (21)(22) Заявка: 2017105256, 17.02.2017 (24) Дата начала отсчета срока действия патента: 17.02.2017 24.05.2017 Приоритет(ы): (22) Дата подачи заявки: 17.02.2017 (45) Опубликовано: 24.05.2017 Бюл. № 15 Адрес для переписки: 109431, Москва, ул. Привольная, 70, ООО "Сервис Групп" (56) Список документов, цитированных в отчете о поиске: JP 2006253971 A, 21.09.2006. RU 2231889 C1, 27.06.2004. RU 2277280 C1, 27.05.2006. U 1 1 7 1 2 0 9 R U (57) Формула полезной модели 1. Устройство учета и передачи информации о расходе электроэнергии, отличающееся тем, что содержит корпус с конструктивно и функционально объединенными в нем прибором для учета расходов ...

Устройство высокочастотной связи по линиям электропередачи

Полезная модель относится к области электроэнергетики и может быть применена на энергообъектах (электрических подстанциях) всех классов напряжения, в системах технологического наблюдения, предназначенных для открытых и закрытых распределительных устройств (ОРУ и ЗРУ), а также общеподстанционных пунктах управления (ОПУ) подстанцией, с целью контроля безопасности технического персонала и/или коммутационного оборудования при проведении работ в электроустановках разных типов и их переключениях.Устройство высокочастотной связи по линиям электропередачи, содержащее блок технологического наблюдения, выполненный с возможностью прореживания кадров для снижения их частоты, полученных от камеры технологического наблюдения, и передачи обработанных данных в цифровой канал высокочастотной связи.Технический результат полезной модели заключается в обеспечении организации технологического наблюдения на электрических подстанциях через низкоскоростные каналы (например, 9600 бит/с), образованные аппаратурой высокочастотной связи по линиям электропередачи, в том числе в симплексном режиме. РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 200 168 U1 (51) МПК H04B 3/54 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ОПИСАНИЕ ПОЛЕЗНОЙ МОДЕЛИ К ПАТЕНТУ (52) СПК H04B 3/54 (2020.08) (21)(22) Заявка: 2020109363, 03.03.2020 (24) Дата начала отсчета срока действия патента: (73) Патентообладатель(и): Общество с ограниченной ответственностью "НПФ Мультиобработка" (RU) Дата регистрации: 08.10.2020 (56) Список документов, цитированных в отчете о поиске: RU 2390814 C2, 27.05.2010. RU 2368914 C1, 27.09.2009. RU 2116700 C1, 27.07.1998. US 8352594 B2, 08.01.2013. (45) Опубликовано: 08.10.2020 Бюл. № 28 2 0 0 1 6 8 R U (54) УСТРОЙСТВО ВЫСОКОЧАСТОТНОЙ СВЯЗИ ПО ЛИНИЯМ ЭЛЕКТРОПЕРЕДАЧИ (57) Реферат: Полезная модель относится к области технологического наблюдения, выполненный с электроэнергетики и может быть применена на возможностью прореживания кадров для энергообъектах (электрических подстанциях) ...

Lighting system communications apparatus and method

A communications apparatus and techniques are presented for communicating with ballasts or drivers through lighting system power connections in which the power connections are energized with low levels of power to power communications components in the ballast/drivers while the light sources are off and low frequency AC communications signals are transmitted through the power connections.

Junction box

A junction box connected to a plurality of solar cell panels connected in series and under control a control device, includes a plurality of diodes, two ports, a switch, and a communication module. The plurality of diodes is forwardly connected in series to form a diode string with two ends, and each of the plurality of diodes is electrically connected to a corresponding one of the plurality of solar cell panels in parallel. The two ports are respectively connected to the two ends of the diode string and the plurality of solar cell panels, and output DC power of the plurality of solar cell panels. The switch is connected between the diode string and the two ports. The communication module is connected to the switch, and receives control signals from the control device to turn on or off the switch to control output of the DC power of the solar cell panels from the two ports.

Energy management device and method

An energy management device manages a plurality of monitored devices distributed in a plurality of monitored areas. The energy management device determines whether a current time of each monitored area is during a monitored time of the energy management device. The energy management device acquires an area identifier and a body presence information from each of the monitored areas, and determines whether one or more monitored areas are under control and without body presence. If one or more monitored areas are under control and without body presence, the energy management device transmits one or more power-off commands to turn off the monitored devices located in the one or more monitored areas.

Communication circuit and adapter having the same

A communication circuit and an adapter having the same are provided. The communication circuit includes a coupling circuit and a transceiver module. The coupling circuit is coupled to a DC power line of the adapter to filter a first modulation signal carried on the DC power line or to couple a second modulation signal to the DC power line. The transceiver module is used to receive and demodulate the first modulation signal from the coupling circuit or to output the second modulation signal to the coupling circuit. The adapter is capable of transmitting data and power through the same DC power line.

Systems and Methods for Facilitating Power Line Communications

Systems and methods for facilitating power line communications are described. In some embodiments, a PLC device may detect the availability of a first frequency band as well the availability of a combination of a second frequency band with a third frequency band. The PLC device may then communicate with another PLC device using a frequency band selected as (a) at least a portion of a combination of the first, second, and third frequency bands, (b) at least a portion of the first frequency band, or (c) at least a portion of the combination of the second with third frequency bands. The PLC device may further transmit a message to a higher-level PLC apparatus (e.g., a domain master) over the power line using a device-based access mode, receive an instruction to switch to a domain-based access mode, and thereafter communicate with another PLC device using the domain-based access mode.

Harmonic transmission of data

Methods, systems, and apparatus, including computer programs encoded on a computer storage medium, for communicating using harmonic tones. In one aspect, a method includes receiving harmonic tones that represent data being reported by a node that generated the harmonic tones; selecting data that are represented by each of the harmonic tones; and providing the data that are represented by the harmonic tones.

Ac-dc power supply unit and associated device

An external power supply unit (PSU) for an appliance includes rectification circuitry operable to convert an AC voltage from mains power lines to a DC voltage output, decoupling circuitry operable to decouple a broadband data signal from the mains power lines, timing circuitry operable to provide a signal representative of the mains AC voltage timing, and conveyance circuitry operable to convey the DC voltage output, a ground reference signal, the signal representative of the mains AC voltage timing, and the broadband data signal to the appliance, wherein the conveyance circuitry has no more than four conductors. The timing circuitry may be further operable to modulate the signal representative of the mains AC voltage timing onto either the DC voltage output or the broadband data signal. The timing circuitry may be a zero-crossing detector.

Multi-band data transmission

A system for transmitting and receiving data includes a physical adaptation block configured to separate the data into a plurality of frequency bands. Each of the frequency bands has an associated symbol time, and each of the associated symbol times is a whole multiple of one half of a smallest symbol time of all of the frequency bands. An analog front end is configured to provide the data in the plurality of frequency bands to a transmission medium.

In-vehicle power line communication system

In an in-vehicle power line communication system in which a power line communication network and a battery are connected to each other via a first power line, the power line communication network includes a master power line communication node connected to the battery via the first power line, a second power line, slave power line communication nodes including at least a transmitting slave power line communication node and a receiving slave power line communication node, a transmitting-side in-vehicle device, and a receiving-side in-vehicle device. The master power line communication node and the slave power line communication nodes communicate with each other using a time-triggered communication protocol. The mutual communicating of the slave power line communication nodes are controlled by a token signal output from the master power line communication node. Only the master power line communication node and the slave power line communication nodes are connected to the second power line.

Method and apparatus for alignment in neighboring networks

A method includes detecting, at a first timing with reference to a periodic signal that is common to a first domain and a second domain, a first signal indicative of the first domain. The first signal is used by the first domain to signal presence of the first domain and a time used by the first domain for inter domain communication with other domains. Further, the method includes comparing, the first timing to a second timing with reference to the periodic signal. The second domain uses a second signal at the second timing to signal presence of the second domain and a time used by the second domain for inter domain communication with other domains. Then, the method includes aligning the first signal and the second signal to enable inter domain communication between the first domain and the second domain.

Carrier Sense Multiple Access (CSMA) Protocols for Power Line Communications (PLC)

Systems and methods for carrier sense multiple access (CSMA) protocols for power line communications (PLC) are described. In some embodiments, a method may include performing a virtual carrier sensing operation and, in response to the virtual carrier sensing operation indicating that a communication channel is idle, calculating a contention window. The method may also include performing a physical carrier sensing operation subsequent to the virtual carrier sensing operation, the physical carrier sensing operation based, at least in part, upon the contention window. In response to the physical carrier sensing operation indicating that the communication channel is idle, the method may then include transmitting data over the channel. In other embodiments, another method may include determining that a data transmission is a unicast transmission and that an acknowledgement message has not been received. The method may further include incrementing a backoff parameter and repeating one or more carrier sense operations.

Power line communications method and apparatus

System, for transmitting and receiving signals over residential electrical cables includes at least one active wire, one neutral wire and one ground wire. The system includes at least two power line modems, each one of the two power line modems including a processor, transmitters and at least one receiver, transmitters and the receiver being coupled with the processor, for respectively transmitting and receiving the signals. At least two of the wires form at least one receive wire pair and at least two of the wires form at least one transmit wire pair. Each one of the transmitters defines a respective carrier wave range over the transmit wire pair, the processor determining a frequency carrier wave for the signals when the signals are transmitted. A given one of the transmitters transmits the signals if the frequency carrier wave is in the carrier wave range of the given one of the transmitters.

Closed-circuit power line communication

A system for closed-circuit power line communication includes at least a first and second power line connected to at least one electrical device configured to receive a data signal. An auxiliary line is connected to the electrical devices to provide a ground connection, and at least one transmitter generates a first data signal for transmission over the first and second power lines, respectively, to the electrical device. A low-pass common-mode filter is connected to the first and second power lines to provide closed-circuit data communication between the transmitter and the electrical device, the filter comprising at least one coupling capacitor between said first and second power lines such that at least the polarities with respect to ground of said first data signals transmitted over the first and second power lines, respectively, are substantially similar.

Direct current power line communication system and direct current power line communication apparatus

Disclosed is a direct current power line communication apparatus, by which communication between electronic apparatuses with a direct current voltage line there between can be stabilized. The direct current power line communication apparatus, i.e., a direct current power line communication apparatus that transmits signals using the direct current voltage line ( 15 a ), is provided with: a PLC communication control unit ( 29 ), which controls the transmitting unit ( 27 ) connected to the direct current voltage line ( 15 a ); and a voltage detecting unit ( 30 ), which detects the voltage of the direct current voltage line ( 15 a ), and notifies the PLC communication control unit ( 29 ) of the detected voltage. The PLC communication control unit ( 29 ) transmits information, including the voltage information, to other direct current power line communication apparatus via the transmitting unit ( 27 ).

Power line communication apparatus and noise detection method thereof

A power line communication apparatus and a noise detection method that are capable of detecting noises periodically generated without extending the dynamic range of an A/D converter used therein. The power line communication apparatus according to an embodiment of the present invention includes: a power detection unit that detects powers in communication slots used for transmitting and receiving data via a power line; a channel (transmission line) estimation unit that estimates the condition of a transmission channel on the basis of a difference between an average power through unused slots that are not assigned for transmitting and receiving the data among the communication slots and instantaneous powers regarding the unused slots; and a periodicity determination unit that detects a noise that is periodically generated on the basis of the estimated condition of the transmission channel and an alternating-current cycle in the power line.

Smart grid over power line communication network

A smart-grid communication system including a plurality of receptacles and a power management gateway in electrical communication with each of the plurality of receptacles is presented. Each of the power modules of the plurality of receptacles provides power usage information to the power management gateway. Also, the power usage information is transmitted via a first communication means to the power management gateway and the power management gateway transmits the information via a second communication means to one or more external communications sources.

Communications system using beamforming

In a MIMO communications system a first communications device applies beamforming to a complete transmission packet including both synchronization data and either payload data or training symbols. A second communications device evaluates the beamformed synchronization data and determines and transmits a feedback information indicating minimum required synchronization data and/or a minimum number of training symbols. The first communications device tailors the synchronization data and/or number of training symbols on the basis of the feedback information. Beamforming the complete transmission packet facilitates signal suppression at defined locations. When the channel properties change, the second communications device may provide further channel state information to adapt beamforming in the first communications device without transmission of not beamformed training symbols. The communications system may be a powerline telecommunications system.

Power and bidirectional data transmission

Systems and methods for power and bidirectional data transmission using a plurality of wires. A multiphase digital signal is downlinked from a main unit to a remote unit over the plurality of wires and is converted to a DC power signal used to power the remote unit. Uplink data is sent from the remote to the main over one selected wire during a predetermined time period for an uplink transmission by amplitude modulating the received digital signal at the remote. During an uplink, the output impedance of the line driver in the main unit connected to the wire selected for the uplink is increased to allow for the uplink amplitude modulation. The modulated signal is maintained within the noise margins of the digital circuits in the main and remote units.

Sensor having an integrated Zigbee® device for communication with Zigbee® enabled appliances to control and monitor Zigbee® enabled appliances

A sensor device integrates ZigBee® technology into power switch device to provide monitoring and control of power usage, as well as operational control of connected devices. The sensor device uses a power line communication (PLC) network to transfer collected data and to provide remote control capability to connected appliances. The sensor device, in conjunction with a master switch device, a communication enabled switching device, and the power switch device, provides an integrated home environment for communication, streaming media, monitoring, and remote control of power usage, as well as remote operational monitoring and control of connected appliances in the home.

Transmitting apparatus using dc carrier and receiving apparatus using dc carrier

A transmitting apparatus using DC carrier includes a microcontroller, a transmitting-side communication circuit, an induction reactance unit, a DC isolation unit, and a DC power and signal output terminal. An information signal is received by the microcontroller. The information signal is transferred to a communication signal by the transmitting-side communication circuit. A DC power is received by the induction reactance unit. The DC isolation unit avoids the transmitting-side communication circuit to be impacted by the DC power. The communication signal and the DC power are transmitted from the DC power and signal output terminal to an electric wire. The transmitting apparatus using DC carrier of the present invention can transmit the DC power and the communication signal at the same time with an electric wire to save labor cost and electric wire cost.

Smart-Grid Having PLC Networked Sensors

A smart-grid residential service (SRS) uses connected sensors for integrated service monitoring and control of home appliances via the Internet and an in-home PLC network. Such sensors collect power usage information and include an intelligent master device and any of a communication enabled switch, a ZigBee® enabled switch, and a power control switch, each of which operate over a power line communication (PLC) network. The master collects, compiles, and communicates collected data to the network. The SRS provides infrastructure, i.e. communication, IP-TV, climatic control, etc. monitoring and control, power monitoring and control of connection enabled home appliances, other utility usage monitoring, and security monitoring and control. The SRS also provides billing and collection information for the monitored utilities to utility companies.

Powerline Control Interface in Photovoltaic Environment for Frequency and Amplitude Modulation Transmitter

An apparatus is disclosed where a Maximum power point tracking (MPPT) circuit is used to transmit data into the photovoltaic network, where the PLC communication is pulling the required transmit energy from the photovoltaic network, where the transmit chain is using the MPPT transistor of the photovoltaic DC Optimizer, where the transmit chain is transmitting data using Standard modulation such as ASK, FSK, S-FSK, BPSK, OFDM, etc. . . . where the transmitted data are passed on to the powerline network by the use of an “Input signal” adaptation stage, where signals summation is performed to create a command signal used to control the transmission of data by providing enough voltage to polarize the Transistor (i.e: MOS FET) used in the powerline path.

Transmitting device, receiving device and communication method for an ofdm communication system with new preamble structure

A transmitting device, a receiving device, and a communication method for transmitting and receiving data modulated on frequency subcarriers of an OFDM communication system. An OFDM burst includes a preamble part and payload data part, whereby the preamble includes a section of pilot symbols mapped onto every n-th frequency subcarrier and signaling data mapped onto the frequency subcarriers between the frequency subcarriers with the pilot symbols. A first channel estimation on the basis of the received pilot symbols is performed, the result of which is used to reconstruct the entire section of the received preamble as a training pattern for an accurate channel estimation, which is used for a channel equalization of the received payload part.

Extended duration phy header for plc

A method of powerline communications (PLC) over a PLC channel including a first node and at least a second node utilizes an algorithm that compiles frames having extended duration physical layer (PHY) headers. A duration or estimated duration of a null of the PLC channel is provided. An extended duration PHY header is compiled including a plurality of symbols and bits having a time duration of the PHY header of at least fifty percent (50%) more than the duration or estimated duration of the null. The compiling includes symbol repetition of at least a portion of the plurality of symbols or bit repetition of at least a portion of the plurality of bits. The first node transmits a frame including a preamble and the extended duration PHY header over the PLC channel to at least the second node.

Broadcast transmission for multi-tone mask mode operation

A method of Multi-Tone Mask (MTM) mode communications in a PLC network including a first router associated with a plurality of nodes. A super-frame spanning a time period is received within the subnetwork. The super-frame includes beacon frames in beacon slots within a beacon period, with each beacon frame in one of N TMs, a contention access period (CAP) including a plurality of CAP slots provided for each TM, and a poll-based contention-free period (CFP). The beacon frames provide time assignments within the super-frame including time assignments for the CAP slots and for the CFP, and TM assignments for the TMs in the CAP slots. One of nodes, another router in the subnetwork, or a router in another subnetwork transmits a broadcast frame on the PLC channel. The first router forwards the broadcast frame on the PLC channel in each of the N TMs within the time period.

Enhanced Carrier Sense Multiple Access (CSMA) Protocols

Systems and methods for enhanced carrier sense multiple access (CSMA) protocols are described. In various implementations, these systems and methods may be applicable to Power Line Communications (PLC). For example, a method may include attempting to access a communications channel to transmit a frame after a backoff time proportional to a randomly generated number within a contention window (CW), the CW having an initial value carried over from a previous transmission of a different frame. Additionally or alternatively, some of techniques described herein may facilitate the spreading of the time over which devices attempt to transmit packets, thereby reducing the probability of collisions using, for example, Additive Decrease Multiplicative Increase (ADMI) mechanisms.

POWER LINE COMMUNICATION DEVICE, SECURITY LEVEL SETTING METHOD, AND STORAGE MEDIUM STORING SECURITY LEVEL SETTING PROGRAM

According to an aspect, a power line communication device includes a power line communication unit, a process unit, a waveform acquiring unit, a storage unit, a comparing unit, and a security level setting unit. The power line communication unit performs power line communication based on a communication signal superimposed on a carrier wave transmitted via a power line. The waveform acquiring unit acquires a waveform of the communication signal included in the carrier wave transmitted via the power line of the commercial power source. The comparing unit compares waveform information stored in the storage unit with waveform information acquired by the waveform acquiring unit at the time of requiring the process of the process. The security level setting unit changes the security level based on the comparison result by the comparing unit. 1. A power line communication device comprising:a power line communication unit for performing power line communication based on a communication signal superimposed on a carrier wave transmitted via a power line of a commercial power source;a process unit of which a process is restricted in accordance with a security level;a waveform acquiring unit for acquiring a waveform of the communication signal included in the carrier wave transmitted via the power line of the commercial power source;a storage unit for storing, as registered waveform information, waveform information corresponding to the waveform of the communication signal acquired in advance by the waveform acquiring unit;a comparing unit for comparing the registered waveform information stored in the storage unit with comparison waveform information corresponding to the waveform, acquired by the waveform acquiring unit at the time of requiring the process of the process; anda security level setting unit for changing the security level based on the comparison result obtained by comparing the registered waveform information with the comparison waveform information by the ...

System and method for providing a wireless/power-line diversity communications channel

A system and method is presented where a low-IF architecture can be used to allow existing wireless standards to be used for joint wireless/power-line channel transmission in the provision of diversity communications channels. Diversity combining of wireless and power-line channels can be employed, wherein the input noise to the maximum-likelihood detector can be Class A-distributed. For uncoded BPSK, the BER can be a function of PLC impulsiveness and can improve wireless-only BER by orders of magnitude when PLC SNR >10 dB. The error performance can be equivalent to BER of the static PLC channel for low wireless SNR and can improve with a slope of −1 at high wireless SNRs. The inflection point between these two regions can occur at approximately 0 dB when PLC noise is Gaussian, and increases above 20 dB as the noise becomes more impulsive.

Method for supplying at least one bus user

A method for supplying at least one bus user via a control unit, in which data are transmitted to at least one bus user during at least one phase for data transmission and power is transmitted during at least one phase for power transmission, the at least one phase for data transmission and the at least one phase for power transmission being provided alternately, and the lengths of the phases for data transmission and/or the lengths of the phases for power transmission being set variably. 110-. (canceled)11. A method for supplying at least one bus user via a control unit , the method comprising:transmitting data to the at least one bus user during at least one phase for data transmission;transmitting power during at least one phase for power transmission, the at least one phase for data transmission and the at least one phase for power transmission being provided alternately;wherein at least one of a length of the phase for data transmission and a length of the phase for power transmission is set variably, andwherein a control unit having a dynamic interface is used to switch over between the at least one phase for power transmission and the at least one phase for data transmission.12. The method of claim 11 , wherein at least one of the length of the phase for data transmission and the length of the phase for power transmission are at least one of flexibly adapted and dynamically adapted to at least one of a quantity of the data to be transmitted and to a demand for power of the at least one bus user.13. The method of claim 11 , wherein power is provided at a first high output during the at least one phase for power transmission claim 11 , and wherein power is provided at a second claim 11 , lower output claim 11 , in addition to the data claim 11 , during the at least one phase for data transmission.14. The method of claim 11 , wherein the at least one bus user is connected to a network when at least one signal is present claim 11 , which is transmitted during at ...

SOFT REPETITION CODE COMBINER USING CHANNEL STATE INFORMATION

An embodiment is a method and apparatus to decode a signal using channel information. A channel state estimator generates a tone value representing channel information. A quantizer quantizes the tone value. A combiner combines de-interleaved symbols weighed by the quantized tone value. A comparator compares the combined de-interleaved symbols with a threshold to generate a decoding decision. Another embodiment is a method and apparatus to decode a signal using averaging. A channel estimator provides a channel estimate. A multiplier multiplies a quantized output of a demodulator with the channel estimate to produce N symbols of a signal corresponding to a carrier. A de-interleaver de-interleaves the N symbols. An averager averages the N de-interleaved symbols to generate a channel response at a carrier. 1. An apparatus comprising:a channel estimator to provide a channel estimate;a multiplier coupled to the channel estimator to multiply a quantized output of a demodulator with the channel estimate to produce N symbols of a signal corresponding to a carrier;a de-interleaver coupled to the multiplier to de-interleave the N symbols; andan averager coupled to the de-interleaver to average the N de-interleaved symbols to generate a channel response at a carrier.2. The apparatus of further comprising:a first quantizer to generate the quantized output of the demodulator; anda second quantizer to generate input to the channel estimator corresponding to the carrier; anda slicer coupled to the averager to slice the channel response to provide a decoding decision.3. The apparatus of wherein the averager comprises:N−1 storage elements connected in cascade to store N−1 de-interleaved symbols; andan adder coupled to the (N−1) storage elements to add the N de-interleaved symbols including the N−1 stored de-interleaved symbols.4. The apparatus of wherein N is a power of two.5. The apparatus of wherein the signal is received from a power line.6. The apparatus of wherein the ...

Sub-Band Power Scaling Reporting and Sub-Band Transmit Power Estimation

Systems and methods for routing protocols for power line communications (PLC) are described. In some embodiments, a method performed by a PLC device, such as a PLC meter, may include selecting one or more transmit sub-bands on which to transmit frames, where the transmit sub-bands comprise groups of six carrier frequencies. The PLC device then generates a frame comprising a tone map that indicates which transmit sub-bands are used to carry data for the frame. The tone map using two bits per transmit sub-band to indicate a status of each transmit sub-band. The PLC device then transmits the frame on the selected transmit sub-bands using OFDM. A resolution bit and a mode bit may be used to provide additional information about the transmit sub-bands, such as an amount of power adjustment that has been applied to carrier frequencies and whether dummy bits are transmitted on unused carrier frequencies.

SYSTEM AND METHOD FOR APPLYING MULTI-TONE OFDM BASED COMMUNICATIONS WITHIN A PRESCRIBED FREQUENCY RANGE

According to one embodiment of the invention, an integrated circuit comprises an encoding module, a modulation module and a spectral shaped module. The encoding module includes an interleaver that adapted to operate in a plurality of modes including a first mode and a second mode. The interleaver performs repetitive encoding when placed in the second mode. The modulation module is adapted to compensate for attenuations that are to be realized during propagation of a transmitted signal over the power line. The spectral shaped module is adapted to compensate for amplitude distortion and further compensates for attenuations that will be realized during propagation of the transmitted signal over the power line. 1. (canceled)2. A system comprising:a first network device including a first receiver and a first transmitter that operate in a frequency band from 1 kHz to 600 kHz;a distribution transformer connected by a power line to the first network device; anda second network device connected by the power line to the distribution transformer, wherein the second network device includes a second transmitter and a second receiver that operate in the frequency band from 1 kHz to 600 kHz,wherein the first network device and the second network device communicate data via the power line through the distribution transformer in the frequency band from 1 kHz to 600 kHz.3. The system of claim 1 , wherein the first network device comprises:an encoding module including an interleaver to interleave transmit data in both time and frequency, to operate in a plurality of modes including a first mode and a second mode, and to perform repetitive encoding on the transmit data in the second mode; and an adaptive tone mapping module to modulate an output of the encoding module to selected orthogonal tones located in the frequency band based on a mapping table; and', 'a frequency pre-emphasis module to pre-emphasize at least one of the selected orthogonal tones to compensate for estimated ...

COMMUNICATIONS SYSTEM USING BEAMFORMING

In a MIMO communications system a first communications device applies beamforming to a complete transmission packet including both synchronization data and either payload data or training symbols. A second communications device evaluates the beamformed synchronization data and determines and transmits a feedback information indicating minimum required synchronization data and/or a minimum number of training symbols. The first communications device tailors the synchronization data and/or number of training symbols on the basis of the feedback information. Beamforming the complete transmission packet facilitates signal suppression at defined locations. When the channel properties change, the second communications device may provide further channel state information to adapt beamforming in the first communications device without transmission of not beamformed training symbols. The communications system may be a powerline telecommunications system. 1. A communications device comprising:a transmitter unit configured to transmit at least two parallel transmit signals via a transmission channel of a communications system; anda precode unit configured to generate transmit signals based on beamforming and to ensure that the transmit signals do not exceed a predetermined level at a predefined location of the communications system.2. The communications device of claim 1 , wherein the precode unit is configured to ensure that selected frequencies of the transmit signals do no exceed a predetermined level at the predefined locations.3. The communications device of claim 1 , wherein the predefined location is a location in the air claim 1 , where the electrical or magnetical field of the signal radiation does not exceed the predetermined level.4. The communications device of claim 1 , whereinthe transmit signals contain payload data, synchronisation data and/or training symbols.5. The communications device of claim 1 , whereinthe precode unit is configured to beamform the ...

Coexistence Method by Requesting Access to the Channel

Systems and methods for implementing coexistence by requesting access to a channel in power line communications (PLC) are described. In an illustrative embodiment, a method performed by a PLC device, such as a PLC meter, may include detecting a communication from foreign PLC device on a PLC network in response to a foreign preamble received by the PLC device, determining whether a threshold back-off duration has been reached, and transmitting a channel access request in response to a determination that the threshold back-off duration has been reached. 1. A method comprising: detecting a communication from foreign PLC device on a PLC network in response to a foreign preamble received by the PLC device;', 'determining whether a threshold back-off duration has been reached; and', 'transmitting a channel access request in response to a determination that the threshold back-off duration has been reached., 'performing, by a power line communication (PLC) device,'}2. The method of claim 1 , further comprising:waiting a for a hold period after transmitting the channel access request before initiating data transmissions on the channel.3. The method of claim 2 , further comprising:initiating data transmission on the channel in response to a determination that the hold period has expired.4. The method of claim 1 , further comprising:backing off data transmission from the channel in response to a determination that the threshold back-off duration has not been reached.5. The method of claim 4 , wherein the back-off duration is determined by the coexistence Extended Interframe Space (cEIFS) defined for the network.6. A method comprising: detecting a communication from foreign PLC device on a PLC network in response to a foreign preamble received by the PLC device;', 'determining whether a threshold back-off duration has been reached; and', 'transmitting a channel access request in response to a determination that the threshold back-off duration has been reached, wherein the ...

TWACS PULSE INDUCTOR REVERSAL CIRCUIT

A circuit (C-C) is employed in a TWACS transponder (T) installed in an electric meter (M). The transponder generates inbound signals (IB) transmitted from the location of the electric meter to a central location (R). Firmware (F) within the transponder controls the flow of current for each pulse through the circuit by triggering a semi-conductor device such as a SCR (X) or TRIAC (X). The resulting current flow through the inductor for a subsequent pulse, regardless of the pulse's polarity, will be in the opposite direction to that of the previous pulse. The result is to maintain a constant level of magnetization of the inductor core which does not have to be overcome by energy in the subsequent pulse resulting in amplitude of all the pulses imposed on an AC waveform being substantially the same. 1. In a transponder for use in a TWACS for transmitting inbound communications from a location where the transponder is located to another location over a utility's power transmission lines , the inbound communications being composed of positive and negative pulses imposed on an AC waveform and the transponder including an inductor through which the pulses are propagated , apparatus for controlling current flow through the inductor comprising:an electrical circuit to which the inductor is connected, the circuit comprising switch means controlling the direction of current flow through the inductor for each pulse propagated therethrough; and,monitoring means monitoring the direction of current flow through the inductor with the occurrence of each pulse, the monitoring means controlling the switch means to route current flow through the inductor in the opposite direction from that of current flow for the previous pulse regardless of whether the previous pulse and the subsequent pulse are of the same or a different polarity, whereby the magnetization of a core of the inductor does not have to be overcome by energy in the subsequent pulse but is maintained at a level that allows ...

Fuel dispensing environment utilizing retrofit broadband communication system

A fueling environment communication system for providing high bandwidth information via existing field wiring to a plurality of forecourt devices. The communication system according to this aspect comprises a back room communication module having a first plurality of Ethernet ports for connection to external devices using Ethernet communication and a second plurality of Ethernet ports. The back room communication module further comprises a plurality of modulation interface devices each connected on a first side to a respective one of the second plurality of Ethernet ports. A summing and isolation module having a high pass filter is connected to each of the modulation interface devices on a second side thereof to pass a modulated high frequency signal. The summing and isolation module further has a low pass filter through which low frequency legacy data can be passed and combined with said modulated high frequency signal. In addition, summing and isolation module is connectable via existing field wiring to communicate with forecourt devices in point-to-point fashion.

RECEIVING DEVICE, SIGNAL PROCESSING DEVICE, AND SIGNAL PROCESSING METHOD

A receiving device according to the present invention includes: a receiver for receiving an OFDM symbol that is modulated by phase shift keying; an FFT processor for applying an FFT process to the received OFDM symbol to obtain a subcarrier signal; a demapping unit for demapping the subcarrier signal to generate a bit string; a norm calculator for calculating the norm of the subcarrier; a weighting factor generator for generating a weighting factor by taking the statistics of the calculated norm; and a weighting unit for obtaining a soft decision value by weighting the bit string after demapping, based on the particular weighting factor. Thus, the receiving device can obtain a soft decision value to achieve good decoding performance with a small number of known signals and processes. 1. A receiving device , comprising:a receiver for receiving an OFDM symbol that is modulated by phase shift keying;an FFT processor for applying an FFT process to the received OFDM symbol to obtain a subcarrier signal;a demapping unit for demapping the subcarrier signal to generate a bit string;a norm calculator for calculating the norm of the subcarrier signal;a weighting factor generator for generating a weighting factor by taking the statistics of the calculated norm; anda weighting unit for obtaining a soft decision value by weighting the bit string after demapping based on the particular weighting factor.2. The receiving device according to claim 1 ,wherein the weighting factor generator includes a norm variance calculator for calculating a variance or expected value in a plurality of symbols of the norm to generate the weighting factor.3. The receiving device according to claim 1 ,wherein the weighting factor generator includes:a norm variance calculator for calculating the variance and expected value in a plurality of symbols of the norm; andan SNR estimation unit for estimating an SNR based on the variance and the expected value in the symbols of the norm to generate a weighting ...

Communication method and apparatus of network management system

The invention provides a communication system for a power distribution network, which comprises at least two distribution domains, each of the domains includes one management device and at least one electrical device. The management device is configured as connected with the electrical devices within its domain, and is further configured as capable of collect information from the electrical devices. The system also comprises a communication link, which is arranged for the management devices of different domains, and the management devices are configured as capable of directly exchanging information through the link.

Wireless bridging in a hybrid communication network

A hybrid device can be configured to use WLAN communication links for bridging network traffic between any pair of network devices in a hybrid communication network, irrespective of whether the bridged network devices support WLAN communication. The hybrid device receives a first data frame in a first frame format for transmission to a destination device. The hybrid device accesses its hybrid forwarding tables and identifies a transmit interface from which to transmit the first data frame for transmission to the destination device. If the transmit interface is a WLAN interface, WLAN forwarding tables associated with the WLAN transmit interface are accessed to identify a receiving WLAN device to which the first data frame should be transmitted. The WLAN transmit interface converts the first data frame into a second data frame in a WLAN frame format and transmits the second data frame to the receiving WLAN device.

POWER LINE COMMUNICATION SYSTEM AND AN INTELLIGENT METER

A power line communication system including a plurality of intelligent devices in communication with a power line and operable to monitor energy usage at a site and communicate usage data onto the power line, and a controller also in communication with the power line, wherein each intelligent device maintains a routing table identifying a first set of other intelligent devices downstream of it relative to the controller that it can communicate with directly and identifying a second set of other intelligent devices downstream of it relative to the controller that it can communicate with through one or more of the first set of other intelligent devices. 191009039906906. An intelligent device () for a power line communication system () that has stored in memory () information uniquely specifying the identity of the intelligent device () and includes an interface () for data communication with a power line and is operable to perform a configuration process including the steps of using said interface () to:{'b': 906', '9, 'a) detect data of a first data type (WCHM packets) through the interface and in response thereto extract from the data of a first data type (WCHM packets) and record in memory identity information for the source of the data of a first data type (WCHM packets) and generate on said interface () data of a second data type (IHY packets) that have as a destination address the source of the data of a first data type (WCHM packets) and includes the information specifying the identity of the intelligent device ();'}{'b': 9', '906', '9, 'b) detect data of a second data type (IHY packets) that have the intelligent device () as a destination address and in response thereto extract from the data of a second data type (IHY packets) and record in memory the identity of the source of the data of a second data type (IHY packets) and generate on said interface () data of a third data type (IHT packets) that includes information identifying the source of the data of a ...

Electrical product

A wireless IC device processing a high-frequency signal is arranged in an electrical product main body, and an input-output terminal of the wireless IC device is coupled to at least a portion of a power cable externally extending from the electrical product main body

Methods and apparatus for communication over a three-phase power system utilzing a communication protocol

Methods and apparatus related to controlling an apparatus such as a lighting fixture utilizing a communication protocol transmitted over the power line that feeds the lighting fixture. For example, in some embodiments data is transmitted over a three-phase power system via switching of a transformer electrically coupled to the three-phase power system. Optionally, a single transformer may be utilized to transmit data to at least on apparatus coupled to a first phase line of a three-phase power system and to at least one apparatus coupled to a second phase line of the three-phase power system.

Scheduling for Charger and Electric Vehicle Communication in Power Line Communication System

Systems and methods for establishing scheduling for charger and electric vehicle communication in a PLC system are described. In an illustrative embodiment, a method performed by a PLC device. In a further embodiment, the PLC device may be configured to operate according to a narrow-band PLC communication protocol. In a further embodiment, the narrow-band PLC communications between PLC devices in the charger and the electric vehicle are conducted over a pilot wire coupling the charger to the electric vehicle. In still a further embodiment, the pilot wire may be one of a standard set of existing wires in a standard cable used for connecting the charger to the electric vehicle. 1. A method comprising: assigning a first priority to a first category of data messages to be communicated over a narrow-band PLC channel;', 'assigning a second priority to a second category of data messages to be communicated over the narrow-band PLC channel, the second priority being higher than the first priority;', 'halting initiation of further communication of the first category of data messages in response to a determination that at least one data message having the second priority is queued for communication; and', 'communicating the at least one data message having the second priority in response to a determination that the narrow-band PLC channel is available., 'performing, by a power line communication (PLC) device,'}2. The method of claim 1 , further comprising:reinitiating further communication of the first category of data messages in response to a determination that the at least one data message having the second priority has been communicated and in response to a determination that the narrow-band communication channel is available.3. The method of claim 1 , wherein the determination that the narrow-band PLC channel is available comprises waiting for active communication of data messages having the first priority to complete before communicating the at least one data message ...

Transmitting electrical power and communication signals

A system for transmitting electrical power and communication signals is provided. The system comprises a transmission line, a source of electrical power for supplying electrical power to the transmission line, a first communication unit configured to supply communication signals to the transmission line, a power extraction unit configured to extract and use electrical power from the transmission line, a second communication unit configured to receive communication signals from the transmission line; and a control unit configured to control operation of the system. The source supplies electrical power to the transmission line for respective periods of time which are different from respective periods of time in which the first communication unit supplies communication signals to the transmission line.

METHOD TO IDENTIFY TRACTOR AND TRAILERS AND THE ORDER OF HOOK UP

Methods for connected tractor and trailer identifications and the order of hook-up of multiple trailers to a tractor enable the tractor and trailer identification and the order of trailer hook-up to be remotely broadcast from the tractor or trailers. In one aspect, the detection of vehicle identification and the order of trailer hook-up are determined by PLC tags mounted in the trailers or by a PLC Gateway mounted in the tractor or one of the trailers utilizing the PLC system on the tractor/trailers. In another aspect, the vehicle identifications are extracted from electronic modules existing on the tractor and trailers and sent to the PLC Gateway for broadcast from tractor/trailer.op 1. A method for use with a plurality of trailers , each having a uniquetrailer identification, sequentially coupled to a tractor having a unique tractor identification comprising:coupling the tractor and each of the plurality of trailers in data communication via a power line carrier system; andidentifying the unique trailer identification in the order of coupling of each trailer to the tractor using, part, the power line carrier system.2. The method of further comprising:coupling a power line carrier system to at least one power conductor coupled between a tractor and each of the plurality of trailers for communicating data signals over the at least one power conductor between the tractor and each of the plurality of trailers.3. The method of wherein the step of identifying the traileridentification comprises:providing a unique power line carrier identification in each of the tractor and the plurality of trailers.4. The method of wherein the step of providing the powerline carrier identification comprises:providing an identification tag on each trailer configured to broadcast unique power line carrier trailer identification from each trailer to the power line carrier system.5. The method of further comprising:providing a wireless transmitter on each of the tractor and the plurality of ...

POWER FEEDING SYSTEM AND METHOD

A center device performing power feed control generates a control signal for controlling supply and suspension of power to a main load of a remote terminal and transmits the control signal by superimposing the control signal on the power to be supplied to the remote terminal. The remote terminal includes a power-receiving side unit, a switch that connects the power-receiving side unit with the main load when the switch is on and disconnects the power-receiving side unit from the main load when the switch is off, and a control signal receiver that receives the control signal superimposed on the power transmitted from the center device to turns the switch on or off in accordance with the control signal received at the control signal receiver. 1. A power feeding system comprising:a remote terminal including a power-receiving side unit that receives externally supplied power, a main load as a circuit or device that realizes the principal function thereof, and a switch that connects said power-receiving side unit with said main load when said switch is on and disconnects said power-receiving side unit from the main load when said switch is off; and,a center device including a power-sourcing side unit that performs power feed control to said remote terminal and a control signal transmitter that generates a control signal for controlling supply and suspension of power to said main load and for transmitting the control signal by superimposing the control signal on the power supplied from said power sourcing side unit to said remote terminal, andsaid remote terminal further includinga control signal receiver that receives the control signal that is transmitted by being superimposed on the power supplied from said center device to turn said switch on or off in accordance with the control signal.2. The power feeding system according to claim 1 , wherein said power-sourcing side unit detects the load current flowing through said power-receiving side unit claim 1 , andsaid ...

BLOCK FILTER FOR POWER LINE COMMUNICATION

Provided is a blocking filter for PLC, the blocking filter including a low pass filter unit including a capacitor and a plurality of inductors, a plurality of magnetic saturation prevention circuits each connected to the inductor in parallel to prevent magnetic saturation of the inductor, and operating in response to an interruption control signal inputted from outside, and a first switch connected or opened in response to the interruption control signal and interconnected between the low pass filter unit and a neutral line. 1. A blocking filter for PLC , the filter comprising:a low pass filter unit configured to include a capacitor and a plurality of inductors;a plurality of magnetic saturation prevention circuits each connected to the inductor in parallel to prevent magnetic saturation of the inductor, and configured to operate in response to an interruption control signal inputted from outside; anda first switch connected or opened in response to the interruption control signal and interconnected between the low pass filter unit and a neutral line.2. The filter of claim 1 , wherein the low pass filter unit comprises:first and second inductors connected to a power line in series; anda capacitor interconnected between a contact point of the first and second inductors and the first switch.3. The filter of claim 1 , wherein the first switch is connected when the interruption control signal is turned on and the magnetic saturation prevention circuits operate to prevent the magnetic saturation of the inductors.4. The filter of claim 1 , wherein the first switch is opened when the interruption control signal is turned off and the magnetic saturation prevention circuits do not operate.5. The filter of claim 1 , wherein each of the magnetic saturation prevention circuits comprises:a current transformer so installed as to wrap a periphery of the power line and to detect an input current proportionate to a current flowing in the power line;a low pass filter configured to ...

Adapter

An extended video graphics array (VGA) adapter includes first and second conversion circuits, a switch unit, and an interface. The first conversion circuit includes a digital to analog (D/A) converter and a coupler. The second conversion circuit includes an analog to digital (A/D) converter and a decoupler. When the switch unit connects the first conversion circuit to the interface, the D/A converter converts a digital signal representing data into a first analog form data for coupling with a first alternating current (AC) voltage. When the switch unit connects the second conversion circuit to the interface, the decoupler decouples and separates a second analog form data into the second analog form data. The A/D converter converts the second analog form data into digital signals representing data, and outputs the digital signals representing data to the interface.

COMMUNICATING OVER POWERLINE MEDIA USING SPOT BEAMFORMING

A system and method for communicating information through a powerline medium including at least three conductors, where the transmitter transmits at least two signals onto the powerline medium and the receiver receives one or more signals from the powerline medium. The transmitter adjusts the power transmitted into the powerline medium in order to set the adjusted transmit power to a predetermined level, e.g., a level that ensures power radiated from the powerline medium does not exceed a regulatory limit. The process of adjusting the transmit power may take into account a functional relationship between the transmitted power and properties of the channel. 1. A method for operating a transmitter in order to transmit information through a powerline medium that includes at least three conductors , the method comprising:determining a power adjustment factor α based on data including channel-descriptive information, wherein the channel-descriptive information includes a channel estimate or parameters derived from the channel estimate, wherein the channel estimate is an estimate of a channel between two or more inputs of the powerline medium and one or more outputs of the powerline medium;operating on a symbol s of a symbol stream to obtain two or more transmit values, wherein the symbol stream is determined by a stream of information bits, wherein said operating on the symbol s includes computing a transmit vector x by multiplying the symbol s by the power adjustment factor α and by a vector c, wherein the vector c is a column of a precoding matrix, wherein the precoding matrix is derived from the channel estimate, wherein the two or more transmit values are specified by respective components of the transmit vector x;transmitting the two or more transmit values, respectively, through the two or more inputs of the powerline medium, wherein the power adjustment factor α is determined so that power transmitted into the powerline medium is set to a predetermined value.2. ...

COMMUNICATING OVER POWERLINE MEDIA USING EIGEN BEAMFORMING

A system and method for communicating information through a powerline medium including at least three conductors, where the transmitter transmits at least two signals onto the powerline medium and the receiver receives one or more signals from the powerline medium. The transmitter adjusts the power transmitted into the powerline medium in order to set the adjusted transmit power to a predetermined level, e.g., a level that ensures power radiated from the powerline medium does not exceed a regulatory limit. The process of adjusting the transmit power may take into account a functional relationship between the transmitted power and properties of the channel. 1. A method for transmitting information through a powerline medium that includes at least three conductors , the method comprising:determining a power adjustment factor α based on data including channel-descriptive information, wherein the channel-descriptive information includes a channel estimate or parameters derived from the channel estimate, wherein the channel estimate is an estimate of a channel between two or more inputs of the powerline medium and one or more outputs of the powerline medium;operating on a symbol vector to obtain two or more transmit values, wherein the symbol vector includes a first symbol from a first symbol stream and a second symbol from a second symbol stream, wherein the first and second symbol streams are determined by an information bit stream, wherein said operating on the symbol vector includes computing a transmit vector x by multiplying the symbol vector by the power adjustment factor α and by a precoding matrix, wherein the precoding matrix is derived from the channel estimate, wherein the two or more transmit values are specified by respective components of the transmit vector x; andtransmitting the two or more transmit values, respectively, through the two or more inputs of the powerline medium, wherein the power adjustment factor α is determined so that power transmitted ...

Multi-wideband communications over multiple mediums

A multi-network interface device includes a powerline communications interface and at least one other communications interface configured to communicate over a network. The network may comprise mediums including powerlines, telephone lines, and/or coaxial cables. In some embodiments, the powerline communications interface may communicate with a network apparatus, such as a personal computer, via an Ethernet interface. The multi-network interface device may communicate using multiple frequency bands.

Agile switched-load resonating transmitter for passband power line communication

An agile switched-load transmitter for a communications system for a power distribution network comprises a resonant transponder (T 1 ) with a variable primary frequency. The transmitter significantly increases the bandwidth for communications, significantly lessens the effect of bandwidth noise, and greatly improves both the quality of communications and data throughput. Switches (S 1, S 2 ) selectively connect the transponder to the communications systems and control current flow through a resonant circuit of the unit, particularly the timing between charging and discharging of a capacitive component thereof. This allows the frequency of operation of the transmitter to be controlled so an inbound signal has a frequency within a range of selected frequencies, rather than a fixed frequency, and enables the transponder to deliver an output signal of relatively high power that propagates through the power distribution network with relatively little loss in signal strength.

POWER LINE COMMUNICATION SYSTEM AND VEHICLE

A power line communication system in which a home's power line communication unit can communicate with a vehicle even when a relay is broken off without using a special relay. In this system, a vehicle's PLC communication unit () mounted in a vehicle () and a home's PLC communication unit () installed in a home communicate via a power transmission unit () that transmits communication. signals and power to be supplied to the vehicle (). The power transmission unit () includes a mechanical relay for conducting or shutting off power to the vehicle (). The home's PLC communication unit () transmits a communication request signal for starting communication to the power transmission unit (). When the vehicle's PLC communication unit () receives the communication request signal transmitted by the home's PLC communication unit (), the vehicle's PLC communication unit () energizes the mechanical relay and then starts communication. 19-. (canceled)10. A power line communication system in which a vehicle-side power line communication section mounted on a vehicle side communicates with a home-side power line communication section installed in a home via a power transmission section that transmits power to be supplied to the vehicle , wherein:the power transmission section comprises a mechanical relay comprising a plurality of fixed contacts for conducting or shutting off power to be supplied to the vehicle,the home-side power line communication section transmits a communication request signal for starting communication to the power transmission section, andthe vehicle-side power line communication section energizes the mechanical relay upon receiving the communication request signal transmitted by the home-side power line communication section using propagation of electromagnetic wave between the disconnected fixed contacts of the mechanical relay as a communication path, and then starts communication.11. The power line communication system according to claim 10 , wherein:the ...

Adaptive Sub-Band Algorithm for Point-To-Point Communication in PLC Networks

Embodiments of methods and systems for adaptive sub-band point-to-point communication are presented. In one embodiment a method includes performing functions using a power line communication (PLC) transmitter device. The method may include generating a first data packet having a first adaptive sub-band information set, the first sub-band information set comprising information to be used by a PLC receiver for determining a sub-band hopping pattern. The method may also include transmitting the first data packet on a first PLC sub-band. Additionally, the method may include hopping to a second PLC sub-band, and generating a second data packet having a second adaptive sub-band information set, the second sub-band information set comprising information to be used by the PLC receiver for determine the sub-band hopping pattern. The method may further include transmitting the second data packet on the second PLC sub-band. 1. A method comprising: generating a first data packet having a first adaptive sub-band information set, the first sub-band information set comprising information to be used by a PLC receiver for determining a sub-band hopping pattern;', 'transmitting the first data packet on a first PLC sub-band;', 'hopping to a second PLC sub-band;', 'generating a second data packet having a second adaptive sub-band information set, the second sub-band information set comprising information to be used by the PLC receiver for determine the sub-band hopping pattern; and', 'transmitting the second data packet on the second PLC sub-band., 'performing, by a power line communication (PLC) transmitter device,'}2. The method of claim 1 , further comprising receiving a user input for configuring point-to-point PLC communication with the PLC receiver via a graphical user interface (GUI).3. The method of claim 1 , wherein transmitting the first data packet and transmitting the second data packet are performed according to a File Transfer mode of operation.4. The method of claim 2 , ...

PLC/POWER-SUPPLY HYBRID DEVICE AND DEVICE WITH COMMUNICATION FUNCTION

A PLC/power-supply hybrid device includes a power supply circuit. The power supply circuit includes a switching part for chopping a voltage of a voltage input terminal side, and a control circuit that controls the chopping by controlling switching of the switching part. The control circuit is operated in a normal mode and a transmission mode. The normal mode is a mode in which voltage conversion is performed. The transmission mode is a mode in which data transmission is performed through PLC using a power line that leads to the voltage input terminal. In the transmission mode, the control circuit modulates the switching of the switching part in accordance with transmission data. 119-. (canceled)20. A PLC/power-supply hybrid device , comprising:a power supply circuit that performs voltage conversion in which an input voltage applied to a voltage input terminal is converted into a voltage having a predetermined voltage value, and outputs the voltage obtained as a result of said voltage conversion to a voltage output terminal, wherein a switching part for chopping a voltage of said voltage input terminal side; and', 'a control circuit that controls said chopping by controlling switching of said switching part,, 'said power supply circuit includessaid control circuit is operated in a normal mode and a transmission mode, said normal mode being a mode in which said voltage conversion is performed, said transmission mode being a mode in which data transmission is performed through power line communication (PLC) using a power line that leads to said voltage input terminal, andin said transmission mode, said control circuit modulates said switching in accordance with transmission data.21. The PLC/power-supply hybrid device according to claim 20 , whereinsaid control circuit performs said switching in said transmission mode, under a condition that allows said predetermined voltage value, which is generated in said normal mode, to be obtained while performing the modulation in ...

Dynamic improvement of link symmetry in co-located plc and rf networks

An electronic communication device comprises a first transceiver capable of a bi-directional communication session on a first communication medium; a second transceiver capable of a bi-directional communication session on a second communication medium; and a control logic coupled to the first transceiver and the second transceiver, wherein the control logic is configured to receive, from the first transceiver, a first signal, and cause, in response to the first signal, data transmitted by the first transceiver on the first communication medium as part of a communication session to be transmitted instead by the second transceiver on the second communication medium while the first transceiver continues to receive data as part of the communication session.

METHOD FOR COMMUNICATION IN A HVDC POWER TRANSMISSION SYSTEM, CONTROLLER UNIT AND COMPUTER PROGRAM PRODUCT

A method in a converter station for communication within a DC power transmission system including two or more interconnected converter stations includes receiving, in the converter station, a synchronization signal for synchronizing the two or more converter stations; obtaining, in the converter station, an allocation of a communication time slot; changing, in the converter station, a set-point DC voltage level during the communication time slot; and measuring, in the converter station, a change of DC current in timeslots other than the communication time slot. A communication method utilizing the DC power transmission system itself is thus provided. 112.-. (canceled)14. The method as claimed in claim 13 , wherein said step of receiving a synchronizing signal comprises utilization of the Global Positioning System claim 13 , or arranging a master converter station to transmit a synchronization signal to said converter station.15. The method as claimed in claim 13 , wherein a change in current measured at said converter station in said step of measuring claim 13 , is used for deriving a distance to a converter station having made the change in its set-point DC voltage level.16. The method as claimed in claim 13 , comprising the further step of:modulating, during said designated communication time slot, the set-point DC voltage level, whereby a modulated signal comprising digital control information is exchanged between said two or more converter stations.17. The method as claimed in claim 16 , wherein said digital control information comprises a deviation from desired voltage level and said method comprises the further step of claim 16 , in a converter station receiving said control information claim 16 , adjusting the set-point DC voltage level in order to meet the deviation of the converter station transmitting said control information.18. The method as claimed in claim 17 , wherein a duration of said modulated signal gives information about the urgency to adjust ...

Power line communication system

A power line communication system is provided in which the influence of the impulsive noise unexpectedly generated on a power line which is a communication medium can be reduced according to the characteristics of the impulsive noise by an existing method and power line communication can be realized without a hindrance. A transmitter is constituted by: a modulator for conveying a LIN data signal by a power line; a filter that allows a signal of a predetermined band to pass therethrough; and a sinusoidal wave outputter (sinusoidal wave in the figure). In contrast, the receiver is constituted by the sinusoidal wave outputter, the filter and a demodulator that performs demodulation. To the power line, a limiter that limits the amplitude of the propagating signal to a predetermined amplitude (reception signal amplitude) is connected.

POWER LINE COMMUNICATION APPARATUS AND METHOD, AND LOAD POWER MONITORING APPARATUS AND METHOD USING SAME

A load power monitoring apparatus and method use a power line communication apparatus and method. The power line communication apparatus is capable of performing power line communication through a simple circuit structure by loading a data signal on a current signal supplied over the power line. The power line communication apparatus includes a transmission unit configured to generate a data signal using the current signal, which is supplied through the power line, as a carrier wave, and to transmit the data signal through the power line, and a reception unit configured to receive the data signal, which is generated by the transmission unit, through the power line. 1. A power line communication apparatus , comprising:a transmission unit configured to generate a data signal and to transmit the data signal through a power line supplying power including a current signal, the data signal using the current signal supplied through the power line, as a carrier wave; anda reception unit configured to receive the data signal, which is generated by the transmission unit, through the power line.2. The power line communication apparatus of claim 1 , wherein the data signal is configured to represent status information of a load that is supplied with the power through the power line.3. The power line communication apparatus of claim 2 , wherein the status information of the load is at least one of ON/OFF status information of the load claim 2 , information on an amount of power consumption of the load claim 2 , and information on a power consumption pattern of the load.4. The power line communication apparatus of claim 1 , wherein there are plural transmission units for plural loads claim 1 , respectively and each transmission unit is installed to correspond to a respective load.5. The power line communication apparatus of claim 1 , wherein the transmission unit is coupled between a concentric plug and a plug of the load so as to be electrically connected to the concentric plug ...

Sensor systems wirelessly utilizing power infrastructures and associated systems and methods

Systems and methods for a low-power sensor node and network. A low-power sensor node including a battery, a microcontroller, a sensor module, and a transmitter is used to sense an environmental condition and transmit the information back to a base station via a preexisting power line infrastructure such as power lines of a house or apartment building.

Local area network of serial intelligent cells

A serial intelligent cell (SIC) and a connection topology for local area networks using Electrically-conducting media. A local area network can be configured from a plurality of SIC's interconnected so that all communications between two adjacent SIC's is both point-to-point and bidirectional. Each SIC can be connected to one or more other SIC's to allow redundant communication paths. Communications in different areas of a SIC network are independent of one another, so that there is no fundamental limit on the size or extent of a SIC network. Each SIC can optionally be connected to one or more data terminals, computers, telephones, sensors, actuators, etc., to facilitate interconnectivity among such devices. Networks according to the present invention can be configured for a variety of applications, including a local telephone system, remote computer bus extender, multiplexers, PABX/PBX functionality, security systems, and local broadcasting services.

METHOD AND APPARATUS FOR THREE-PHASE POWER LINE COMMUNICATIONS

Method and apparatus for generating a balanced three-phase power line communication signal. In one embodiment, the method comprises generating a plurality of modulation signals based on at least one data stream; modulating a plurality of carrier signals by the plurality of modulation signals to generate a balanced three-phase PLC signal comprising a first phase signal, a second phase signal, and a third phase signal; and coupling the balanced three-phase PLC signal to a three-phase power line. 1. A method for generating a power line communication (PLC) signal , comprising:generating a plurality of modulation signals based on at least one data stream;modulating a plurality of carrier signals by the plurality of modulation signals to generate a balanced three-phase PLC signal comprising a first phase signal, a second phase signal, and a third phase signal; andcoupling the balanced three-phase PLC signal to a three-phase power line.2. The method of claim 1 , wherein (i) the plurality of modulation signals comprises a first claim 1 , a second claim 1 , and a third modulation signal; (ii) the plurality of carrier signals comprises a first claim 1 , a second claim 1 , and a third carrier signal; and (iii) the first phase signal is generated by modulating the first carrier signal by the first modulation signal claim 1 , the second phase signal is generated by modulating the second carrier signal by the second modulation signal claim 1 , and the third phase signal is generated by modulating the third carrier signal by the third modulation signal.3. The method of claim 2 , wherein the first claim 2 , the second claim 2 , and the third modulation signals are equal to one another claim 2 , and wherein the first claim 2 , the second claim 2 , and the third carrier signals are equal in magnitude and phase-shifted from one another by 120°.4. The method of claim 2 , wherein (iv) the at least one data stream comprises a first and a second data stream; (v) the first modulation ...

Communication system, communication method, relaying device, and recording medium

A communication system between a vehicle and a communication device is disclosed. The vehicle transmits electricity supply information in an A-method to a relaying device like an electricity supply device through an electricity supply line. The electricity supply device receives the electricity supply information in the A-method, then, based on the electricity supply information in the A-method, generates electricity supply information in a B-method, and transmits to the communication device the electricity supply information obtained by conversion into the B-method. The communication device transmits electricity supply information in the B-method to the electricity supply device. The electricity supply device receives the electricity supply information in the B-method, then, based on the received electricity supply information in the B-method, generates electricity supply information in the A-method, and transmits the electricity supply information obtained by conversion into the A-method, to the vehicle through the electricity supply line.

POWER LINE COMMUNICATIONS APPARATUS

A system for communicating data. In one embodiment, the system comprises a photovoltaic (PV) module; an inverter, coupled to the PV module, for receiving DC power from the PV module and converting the DC power to AC power; and an inverter controller communicably coupled to the inverter, wherein the inverter and the inverter controller communicate using power line communications (PLC). 1. A system for communicating data , comprising:a photovoltaic (PV) module;an inverter, coupled to the PV module, for receiving DC power from the PV module and converting the DC power to AC power; andan inverter controller communicably coupled to the inverter, wherein the inverter and the inverter controller communicate using power line communications (PLC).2. The system of claim 1 , wherein the inverter couples the AC power to an AC power line claim 1 , and the inverter and the inverter controller communicate using the PLC via the AC power line.3. The system of claim 2 , wherein the inverter transmits data to the inverter controller via the AC power line.4. The system of claim 3 , wherein the data is digital data.5. The system of claim 4 , wherein the inverter digitally processes the data through a voltage amplification stage and generates an analog waveform for transmitting the data via the AC power line.6. The system of claim 5 , wherein the analog waveform has a frequency between 50-500 KHz.7. The system of claim 6 , wherein the frequency is substantially between 95-148 KHz.8. The system of claim 5 , wherein the analog waveform has a maximum voltage on the order of 1 volt root mean square.9. The system of claim 5 , wherein the inverter controller receives the analog waveform and converts the analog waveform to digital output data.10. The system of claim 2 , wherein the inverter is adapted for simultaneously receiving and transmitting data via the AC power line.11. The system of claim 3 , wherein a transmitter of the inverter presents an impedance substantially between 1-5 ohms to ...

Power supply system for a building

An electrical system, which includes a light switch housing and an AC-to-DC converter carried by the light switch housing. The electrical system includes an input power line which provides an AC signal to an input of the converter and an output power line coupled to an output of the converter. An electrical device operates in response to receiving an output signal from the output power line, wherein the output signal is a DC signal.

Multi-Length Cyclic Prefix for OFDM Transmission in PLC Channels

Embodiments of the invention provide multiple cyclic prefix lengths for either both the data-payload and frame control header or only the data payload. Frame control header (FCH) and data symbols have an associated cyclic prefix. A table is transmitted in the FCH symbols, which includes a cyclic prefix field to identify the cyclic prefix length used in the data payload. A receiver may know the cyclic prefix length used in the FCH symbols in one embodiment. In other embodiments, the receiver does not know the FCH cyclic prefix length and, therefore, attempts to decode the FCH symbols using different possible cyclic prefix lengths until the FCH symbols are successfully decoded. 1. A method comprising:performing, by an OFDM modulator in a power line communication (PLC) device,generating frame control header (FCH) symbols and data symbols from encoded FCH and data bits;prepending a first cyclic prefix to the data symbols, wherein a length of the first cyclic prefix is selected based upon a channel delay characteristic; andidentifying the length of the first cyclic prefix in an FCH table carried in the FCH symbols.2. The method of claim 1 , further comprising:prepending a second cyclic prefix to the FCH symbols.3. The method of claim 2 , wherein a length of the second cyclic prefix is a predetermined value and is different than the length of the first cyclic prefix.5. The method of claim 1 , further comprising:setting one or more bits in a cyclic prefix field of the FCH table to identify the length of the first cyclic prefix.6. The method of claim 1 , further comprising:selecting the first cyclic prefix length based on PLC network deployment characteristics.7. The method of claim 1 , further comprising:selecting the first cyclic prefix length based on an electrical load in a PLC network.8. The method of claim 1 , further comprising:selecting the first cyclic prefix length based on a time of transmission.9. A method comprising:performing, by a receiver in a power line ...

COMMUNICATION APPARATUS, ELECTRONIC APPARATUS, RELAY NODE, COMMUNICATION METHOD, AND COMMUNICATION SYSTEM

Provided is a communication apparatus including a port that connects a power line, along which power is transmitted at a given frequency, to an external apparatus, a transmitter that transmits, via the power line, a carrier signal obtained by modulating a transmit signal that has been obtained by encoding a processing command for executing a given process, at a carrier frequency higher than the frequency of the power, and a communication filter, connected between the power line and the transmitter, that at least blocks signals at the frequency of the power, while not blocking signals at the carrier frequency. 1. A communication apparatus comprising:a port that connects a power line, along which power is transmitted at a given frequency, to an external apparatus;a transmitter that transmits, via the power line, a carrier signal obtained by modulating a transmit signal that has been obtained by encoding a processing command for executing a given process, at a carrier frequency higher than the frequency of the power; anda communication filter, connected between the power line and the transmitter, that at least blocks signals at the frequency of the power, while not blocking signals at the carrier frequency.2. The communication apparatus according to claim 1 , wherein the transmitterencodes the processing command in binary,generates a transmit signal obtained by amplitude-modulating the encoded signal at a frequency lower than the carrier frequency, andmodulates the transmit signal onto a carrier at the carrier frequency, and transmits the modulated result as the carrier signal.3. The communication apparatus according to claim 1 , further comprising:a power line communication unit that communicates, via the power line, with an connected external apparatus connected via the port in a wired manner, and acquires from the connected external apparatus identification information indicating the connected external apparatus;an identifying unit that identifies the connected ...

Communication apparatus, electronic apparatus, and communication system

There is provided a communication apparatus including a signal generator that generates a transmit signal obtained by encoding a processing command for executing a given process, a carrier transmitter that transmits a carrier signal obtained by modulating the transmit signal at a carrier frequency higher than the frequency of power transmitted on a power line, and a communication filter, connected between the power line and the carrier transmitter, that at least blocks signals at the frequency of the power, while not blocking signals at the carrier frequency.

METHOD AND APPARATUS FOR TRANSMITTING CPRI SIGNAL BY MEANS OF COAXIAL LINE

Embodiments of the present invention disclose a method and an apparatus for transmitting a CPRI signal by means of a coaxial line. The method includes: converting a Common Public Radio Interface CPRI signal sent by a sending end into a parallel data stream; extracting valid data from the data stream by performing frame parsing; and converting the valid data into a transmittable analog signal, modulating the analog signal to a specified frequency, and sending it to a receiving end by means of a coaxial line. The present invention applies to transmission of a CPRI signal by means of a coaxial line. 1. A method for transmitting a CPRI signal by means of a coaxial line , comprising:converting a Common Public Radio Interface CPRI signal sent by a sending end into a parallel data stream;extracting valid data from the data stream by performing frame parsing; andconverting the valid data into a transmittable analog signal, modulating the analog signal to a specified frequency, and sending the analog signal to a receiving end by means of a coaxial line.2. The method according to claim 1 , wherein the extracting valid data from the data stream by performing frame parsing specifically comprises:separating user plane data, control and management plane data, and synchronization and timing data in the data stream by performing frame parsing.3. The method according to claim 2 , wherein the converting the valid data into a transmittable analog signal and modulating the analog signal to a specified frequency comprises:performing higher order modulation on the user plane data and up-converting the data onto a specified frequency to obtain a first modulation signal;performing higher order modulation on the control and management plane data and the synchronization and timing data, and up-converting the data onto a specified frequency to obtain a second modulation signal; andcombining the first modulation signal and the second modulation signal into one signal.4. The method according to ...

Interference Control in a Broadband Powerline Communication System

A broadband powerline communication system is disclosed which makes use of knowledge of the spectrum characteristics of a local radio environment in order to improve the performance of the system. A determination is made of the spectrum characteristics of a radio environment in the vicinity of the broadband powerline communication system that is transmitting data on modulated carrier frequencies. Certain ones of the carrier frequencies otherwise used by the broadband powerline communication system may be masked (i.e., not used) by all or part of the broadband powerline system in order to avoid interference based on the determination. The spectrum characteristics may be determined 1) in advance and used to compile a configuration database comprising frequency masking parameters; 2) by monitoring the local radio environment using the transmitter/receiver nodes of the system; or 3) based upon receipt of an indication from a conflicting user that the user is experiencing interference. Various combinations of these spectrum characteristic determination techniques may also be used. 119-. (canceled)20. A method for controlling interference in a broadband powerline communication system that is transmitting data on modulated carrier frequencies not used exclusively by the broadband powerline communication system , the method comprising: a schedule of use of the spectrum by each of the plurality of conflicting users;', 'a list of carrier frequencies used by each of the plurality of conflicting users; and', 'a geographical area in which each of the plurality of conflicting users interferes with the broadband powerline communication system;, 'compiling a database of characteristics of usage of a spectrum by a plurality of conflicting users in a vicinity of the broadband powerline communication system, wherein the characteristics of usage of the spectrum by the conflicting users in the vicinity of the broadband powerline communication system comprisesgenerating a schedule based ...

Reducing the impact of subcarrier quality evaluation

In one embodiment, a device may select, based on an optimal tone map, a particular subcarrier for use when transmitting a data frame, the data frame to serve as a tone map request (TMREQ). The device may then populate one or more unused quality subcarriers of the TMREQ data frame other than the particular subcarrier with a well-known bit sequence, and transmits the TMREQ data frame to a receiving device to cause the receiving device to evaluate transmission quality of the one or more unused quality subcarriers based on the well-known bit sequence.

ASYMMETRIC MIXED-MODE POWERLINE COMMUNICATION TRANSCEIVER

An asymmetric mixed-mode transceiver may determine to communicate with a destination powerline communication device. The asymmetric mixed-mode transceiver may determine whether an operational mode associated with the destination powerline communication device is a multiple-output multiple-input (MIMO) mode or a single-output single-input (SISO) mode. The asymmetric mixed-mode transceiver may dynamically change its operational mode to either the MIMO mode or the SISO mode to match the operational mode of the destination powerline communication device. The asymmetric mixed-mode transceiver may receive a communication from a source powerline communication device. The asymmetric mixed-mode transceiver may determine whether an operational mode associated with the source powerline communication device is the MIMO mode or the SISO mode. The asymmetric mixed-mode transceiver may dynamically change its operational mode to match the operational mode of the source powerline communication device. 1. A powerline communication transmitter comprising:a network interface; determine whether an operational mode associated with a destination powerline communication device communicatively coupled to the network interface is a multiple-output multiple-input (MIMO) mode or a single-output single-input (SISO) mode;', 'determine whether the operational mode of the destination powerline communication device matches an operational mode of the powerline communication transmitter; and', 'dynamically change the operational mode of the powerline communication transmitter to either the MIMO mode or the SISO mode to match the operational mode of the destination powerline communication device in response to determining the operational mode of the destination powerline communication device does not match the operational mode of the powerline communication transmitter., 'a mode selection unit coupled with the network interface, the mode selection unit configured to2. The powerline communication ...

COMMUNICATION SYSTEM, COMMUNICATION DEVICE, AND METHOD FOR OPERATING COMMUNICATION SYSTEM

A communication system includes a first communication device and a second communication device that performs power line communication with the first communication device via an electric power line, wherein the first communication device transmits a plurality of times an initial packet signal added with an error detection code in each of reference timing at regular intervals in the vicinity of zero crossing timing. The second communication device determines whether a reception state is good or poor based on a result of the error detection on each of the received initial packet signals, and when the reception state is poor, the second communication device transmits an ACK signal in timing shifted by micro time from the reference timing after receiving the initial packet signal. Then, the first communication device transmits a data packet signal in timing at the regular interval after the timing of receiving the ACK signal. 1. A communication system , comprising:a first communication device; anda second communication device that performs electric power line communication with said first communication device with an electric power line used as a transmission media, whereinsaid first communication device hasdetection means for detecting zero crossing timing at regular intervals in a commercial power supply, andtransmission means for transmitting a plurality of times an initial signal added with an error detection code in each of reference timing at said regular intervals in the vicinity of the zero crossing timing,said second communication device haserror detecting means for performing error detection on each received initial signal based on the error detection code added to each initial signal,determination means for determining whether a reception state is good or poor based on a result of the error detection on each of said initial signals, andtransmission means for transmitting a confirmation response signal with respect to said initial signal in the reference timing ...

COMMUNICATION SYSTEM, COMMUNICATION DEVICE, AND METHOD FOR OPERATING COMMUNICATION SYSTEM

A communication system includes a first communication device and a second communication device that performs power line communication with the first communication device via an electric power line, wherein the first communication device transmits an initial packet signal added with an error detection code in each zero crossing period including zero crossing timing while changing transmission timing within the zero crossing period. The second communication device specifies optimum communication timing out of a plurality of pieces of transmission timing within the zero crossing periods based on a result of error detection on each initial packet signal, and transmits an ACK signal including timing information on the optimum communication timing. Then, the first communication device transmits a data packet signal in the optimum communication timing within the zero crossing period, which is specified based on the timing information. 1. A communication system , comprising:a first communication device; anda second communication device that performs electric power line communication with the first communication device with an electric power line used as a transmission path, whereinthe first communication device hasdetection means for detecting zero crossing timing at regular intervals in a commercial power supply, andtransmission means for transmitting an initial signal added with an error detection code in each zero crossing period including zero crossing timing while changing transmission timing within the zero crossing period,the second communication device haserror detecting means for performing error detection on each initial signal received in each zero crossing period based on the error detection code added to said each initial signal,specification means for specifying optimum communication timing out of a plurality of pieces of transmission timing within the zero crossing periods based on a result of said error detection on said each initial signal, andtransmission ...

MULTI-BIT DIGITAL SIGNAL ISOLATOR

The invention is directed to a multi-bit digital signal isolation system including a plurality of micro-transformers, each having a primary winding and a secondary winding, a transmitter circuit receiving a multi-bit signal and transmitting an encoded logic signal across the plurality of micro-transformers corresponding to the multi-bit signal, the primary winding of each micro-transformer receiving a signal corresponding to one of at least three possible states, and a receiver circuit receiving the encoded logic signal from the secondary windings of the plurality of transformers, decoding the encoded logic signal and reconstructing the received multi-bit signal based upon the decoded signal. 1. A multi-bit isolation system , comprising:a plurality of isolation channels, each to transmit a respective signal in parallel across a galvanic isolation barrier;a transmitter circuit, provided on a first side of the galvanic isolation barrier and having outputs coupled to the respective isolation channels, the transmitter circuit receives a multi-bit input signal and provides a multi-symbol output signal to the outputs in parallel representing the input signal, one symbol to each output, and each symbol having one of at least three possible states; anda receiver circuit provided on a second side of the galvanic isolation barrier and having inputs coupled to the isolation channels, the receiver circuit decoding the received multi-symbol output signal and providing a reconstructed multi-bit input signal.2. The multi-bit isolation system of claim 1 , wherein one of the states generates zero activity in the isolation channel.3. The multi-bit isolation system of claim 1 , wherein a number of isolation channels is fewer than a number of bits in the multi-bit input signal.4. The multi-bit isolation system of claim 1 , wherein each isolation channel includes a transformer having a primary winding on the first side of the galvanic isolation barrier and a secondary winding on the ...

Support for Multiple Systems Using Different Modulation Schemes in PLC Networks

Embodiments of methods and systems for using both new and older modulation schemes in PLC networks—thereby supporting legacy systems—are disclosed. In one embodiment, common frames that need to be understood by all nodes to support the network will be sent two or more times using different modulation techniques. For example, all broadcast frames, such as beacon requests, beacons, and route requests may be transmitted once with differential modulation and once with coherent modulation. In one configuration, the beacons with differential modulation may be transmitted in one beacon period, and the beacons with coherent modulation may be transmitted in another beacon period. In another configuration, the differential and coherent beacons for a particular tone mask are transmitted one after the other and before any other tone mask beacon is transmitted. 1. A method for supporting legacy nodes and advanced nodes in a power line communication (PLC) network , comprising:transmitting a set of common frames in a legacy mode to nodes in the PLC network, the legacy mode utilized by both the legacy nodes and the advanced nodes; andtransmitting the set of common frames in an advanced mode to the nodes in the PLC network to exploit the use of advanced features.2. The method of claim 1 , wherein the legacy mode is a differential modulation mode and the advanced mode is a coherent modulation mode.3. The method of claim 1 , further comprising:interleaving the set of legacy mode common frames and the set of advanced mode common frames for transmission.4. The method of claim 1 , further comprising:transmitting all of the common frames in one mode before transmitting the other set of common frames in a second mode.5. The method of claim 1 , wherein the PLC network is a non-beacon mode network.6. The method of claim 1 , wherein the PLC network is a beacon mode network.7. The method of claim 1 , wherein the PLC network operates in a multi-tone mask mode.8. The method of claim 1 , further ...

Overlapping Priority Contention Windows for G3 Power Line Communications Networks

Embodiments of methods and systems for overlapping priority contention windows in G3-PLC networks are presented. In one embodiment, a Normal Priority Contention Window (NPCW) is allowed to overlap with a High Priority Contention Window (HPCW). The minimum contention window for the normal priority frames (i.e., NPCW) is equal to or longer than the contention window for high priority frames (i.e., HPCW). By making the NPCW longer than the HPCW, the high priority frames will have a better chance than normal priority frames to get access to the channel on transmission reattempts.

SYSTEM AND COMMUNICATIONS DEVICE FOR TRANSMITTING DATA VIA A POWERLINE AND CORRESPONDING METHOD

A system for transmitting data via a power line including: a first communications device and a second communications device, the first communications device including a transmit unit adapted to generate OFDM symbols to be transmitted using sub-carriers; a roll-off interval indication unit adapted to generate a transmit message indicating that no roll-off interval before and/or after the OFDM symbols is used when transmitting the data; the transmit unit being further adapted to transmit the transmit message; the second communications device including a receive unit adapted to generate the data from the transmitted OFDM symbols by taking into account the received transmit message. 1. System for transmitting data via a power line comprising: a transmit unit adapted to generate OFDM symbols to be transmitted using sub-carriers;', 'a roll-off interval indication unit adapted to generate a transmit message indicating that no roll-off interval before and/or after the OFDM symbols is used when transmitting the data;', 'the transmit unit being further adapted to transmit the transmit message;, 'a first communications device and a second communications device, the first communications device including'}the second communications device including a receive unit adapted to generate the data from the transmitted OFDM symbols by taking into account the received transmit message.2. System according to claim 1 , wherein the transmit unit is further adapted to transmit the transmit message in a Sound MPDU variant field.3. System according to claim 1 , wherein the second communications device further includesa roll-off interval handling unit adapted to generate a receive message indicating that the receive unit is able to handle OFDM symbols without roll-off interval before and/or after the OFDM symbols anda second transmit unit adapted to transmit the receive message to the first communications device.4. System according to claim 3 , wherein the receive message is a bit and the ...

Method and device for transmitting a signal using a transmission power mask

Method for transmitting a signal using a transmission power mask is disclosed. The signal is transmitted by a transceiver A and is connected to a transceiver B via at least one physical link; wherein the transmission power mask is adapted according to a transfer function relative to the impedance of the physical link, so as the power lost during signal transmission is taken into account

Jammer canceller for power-line communication

An apparatus to process an input signal received via a power line in a power line communication system includes a jammer remover and a jammer detector. The jammer remover removes interference resulting from transmission of electricity and the input signal over the power line from the input signal. The jammer remover generates a jammer-canceled signal using an adaptive filtering procedure. The jammer detector is coupled to the jammer remover to detect the interference.

Communication apparatus, integrated circuit, and communication method

A communication apparatus repeatedly outputs a first multi-carrier signal SS during predetermined periods T 1, T 2, T 3, . . . , and outputs a second multi-carrier signal RS whose phase vector is different from that of the first multi-carrier signal SS, at a predetermined timing based on the first multi-carrier signal SS. The communication apparatus further detects the second multi-carrier signal RS output from another communication apparatus, which uses a different communication method from the communication apparatus. Accordingly, both communication apparatuses can differentiate the first multi-carrier signal SS from the second multi-carrier signal RS without performing relatively cumbersome modulation and other processes.

Enabling Co-Existence among Power Line Communication (PLC) Technologies

Systems and methods for enabling co-existence among power line communications (PLC) technologies are described. In some embodiments, a method performed by a PLC device, such as a PLC gateway, may include detecting a communication from foreign PLC device on a PLC network in response to a foreign preamble received by the PLC device, terminating transmissions to the PLC network for a network-specific co-existence Extended Interframe Space (cEIFS) time period in response to the foreign preamble, and resuming transmissions to the PLC network after expiration of the network-specific time period. 1. A method comprising: detecting a communication from foreign PLC device on a PLC network in response to a foreign preamble received by the PLC device;', 'terminating transmissions to the PLC network for a network-specific time period in response to the foreign preamble; and', 'resuming transmissions to the PLC network after expiration of the network-specific time period., 'performing, by a power line communication (PLC) device,'}2. The method of claim 1 , further comprising:decoding the communication according to a predetermine operation; anddetermining whether an error occurred while decoding the communication;sending data from the decoded communication to an upper device layer in response to a determination that no error occurred.3. The method of claim 1 , further comprising detecting both a communication from a native PLC device and a communication from a foreign PLC device within a detection time period.4. The method of further comprising decoding incoming packets that do not require transmission of a responsive packet during the network-specific time period.5. The method of claim 1 , further comprising determining an Extended Interframe Space (EIFS) duration for each device in the network.6. The method of claim 5 , further comprising identifying a maximum EIFS duration.7. The method of claim 6 , further comprising identifying a minimum EIFS duration.8. The method of claim 7 ...

Power line carrier transmission apparatus and communication system

A power line carrier transmission apparatus according to an aspect of the present invention is a power line carrier transmission apparatus that transmits a transmission symbol via a transmission path. The transmission apparatus includes a frequency/time interleave unit that interleaves the transmission symbol, an OFDM modulation unit that OFDM-modulates the interleaved transmission symbol, a time-domain repeated transmission unit that repeatedly transmits the transmission symbol, which is modulated by the OFDM modulation unit, M times (M is an integer larger than 1) in a time domain.

Method for transmitting a signal from a transmitter to a receiver in a power line communication network, transmitter, receiver, power line communication modem and power line communication system

A method for transmitting a signal from a transmitter over a channel to a receiver on a Power Line Network, wherein said signal is OFDM-modulated on a set of sub-carriers, is proposed, wherein an OFDM tonemap and an eigenbeamforming encoding matrix are determined based on a channel estimation for each sub-carrier, a tonemap feedback signal and an eigenbeamforming feedback signal are generated, which are descriptive of said OFDM tonemap and said eigenbeamforming encoding matrix, respectively, and transmitted to the transmitter. A corresponding receiver, a transmitter, a power line communication and a power line communication system are described as well.

Systems And Methods For Conveying Information Using A Control Signal Referenced To Alternating Current (AC) Power

Systems and methods convey information from a controller to at least one slave unit using a single wire referenced to an alternating current (AC) power supply. A control signal has a high voltage and a low voltage. The high voltage is greater than a voltage midpoint of the AC power supply and the low voltage is less than the voltage midpoint. The control signal is conveyed through the single wire to each of the at least one slave unit. At each slave unit, a comparison voltage, representative of the voltage midpoint, is generated by dividing substantially midway the potentials between the power lines of the AC power supply and the control signal is compared to the comparison voltage to determine low and high states of the control signal; the low and high states represent the information. 1 a high voltage greater than a voltage midpoint of the AC power, the voltage midpoint defining a voltage potential substantially midway between potentials of the AC power, and', 'a low voltage that is less than the voltage midpoint,', 'wherein the high and low voltages vary to embed serial data within the slave unit control signal;, 'generating a plurality of slave unit control signals based upon the information, each slave unit control signal comprising'}transmitting, from the controller, the plurality of slave unit control signals through the single wire to each of the dedicated slave units, wherein each dedicated slave unit is independently controlled based upon address information encoded within the serial data.. A method for transmitting information to a plurality of application circuits via a single wire referenced to alternating current (AC) power, each of the application circuits having a dedicated slave unit for operating the application circuit, the method comprising: This application is a continuation application of, and claims priority to, commonly-owned and co-pending U.S. patent application Ser. No. 13/598,195, filed Aug. 29, 2012, which is a continuation application ...

Telephone communication system and method over local area network wiring

A device for enabling a local area network wiring structure to simultaneously carry digital data and analog telephone signals on the same transmission medium. It is particularly applicable to a network in star topology, in which remote data units (e.g. personal computers) are each connected to a hub through a cable comprising at least two pairs of conductors, providing a data communication path in each direction. Modules at each end of the cable provide a phantom path for telephony (voice band) signals between a telephone near the data set and a PBX, through both conductor pairs in a phantom circuit arrangement. All such communication paths function simultaneously and without mutual interference. The modules comprise simple and inexpensive passive circuit components.

INFERRING PRESENCE AND IDENTITY OF NON-LINEAR DEVICES ON A POWERLINE COMMUNICATION NETWORK

A non-liner device (NLD) between powerline communication (PLC) devices can introduce significant distortion into the channel being utilized by the PLC devices. This distortion can create errors and corrupt data transmitted by the PLC devices. When trying to mitigate the effects of the distortion introduced by NLDs, PLC devices conform their mitigating actions to effectively satisfy a limit(s) set by a regulation and/or a standard. A PLC device implemented in accordance with this disclosure can mitigate the distortion effects with deference to regulatory/standard limits without knowledge of what types of NLDs and how many NLDs are coupled to the power line. A PLC device can use different techniques to infer the presence of an NLD in a PLC network. A PLC device can infer the presence of the NLD using a passive technique or one or more active techniques. 1. A method comprising:determining an electronic signature from a signal captured from a power line of a powerline communication network;inferring presence and identity of a non-linear device on the power line based, at least in part, on the electronic signature;retrieving information specified for a non-linear device with the inferred identity;determining one or more distortion mitigating adjustments to apply when transmitting data on the power line to at least avoid violating a limit, wherein the distortion mitigating adjustments are determined based, at least in part, on the information specified for the non-linear device; andindicating the one or more distortion mitigating adjustments for application to a data transmission on the power line.2. The method of claim 1 , wherein said determining the electronic signature from the signal captured from the power line comprises determining multiple electronic signatures from the signal captured from the power line claim 1 , wherein the multiple electronic signatures include the electronic signature.3. The method of claim 2 , wherein determining multiple electronic ...

Long Preamble and Duty Cycle Based Coexistence Mechanism for Power Line Communication (PLC) Networks

Embodiments of methods and systems for supporting coexistence of multiple technologies in a Power Line Communication (PLC) network are disclosed. A long coexistence preamble sequence may be transmitted by a device that has been forced to back off the PLC channel multiple times. The long coexistence sequence provides a way for the device to request channel access from devices on the channel using other technology. The device may transmit a data packet after transmitting the long coexistence preamble sequence. A network duty cycle time may also be defined as a maximum allowed duration for nodes of the same network to access the channel. When the network duty cycle time occurs, all nodes will back off the channel for a duty cycle extended inter frame space before transmitting again. The long coexistence preamble sequence and the network duty cycle time may be used together. 1. A method comprising: detecting a coexistence preamble followed by not detecting a native preamble from a remote PLC device on a channel in a PLC network;', 'determining whether a threshold back-off duration has been reached; and', 'transmitting a long coexistence preamble sequence in response to a determination that the threshold back-off duration has been reached., 'performing, by a power line communication (PLC) device,'}2. The method of claim 1 , further comprising:transmitting a data frame on the channel after transmitting the long coexistence preamble sequence.3. The method of claim 1 , wherein the coexistence preamble sequence comprises m repeated coexistence preambles so that the long coexistence preamble has a duration longer than a largest packet size of different PLC technologies operating on the PLC network.4. The method of claim 1 , wherein a size of the coexistence preamble sequence is selected based upon a maximum packet size for the PLC device.5. The method of claim 1 , wherein the threshold back-off duration is defined as a predetermined number N of coexistence Extended Interframe ...

Air conditioning apparatus and air conditioning system

A modulator modulates a voltage signal corresponding to inputted transmission data, and outputs the signal as a voltage signal between a communication wire and a shared wire. A demodulator demodulates a voltage signal based on the potential difference between the communication wire and the shared wire, and outputs the signal as a demodulated signal. A connector connects the communication wire and the shared wire to the modulator and the demodulator by means of a high voltage capacitor that withstands voltages up to a predetermined level. A controller receives, as incoming data, serial data corresponding to a voltage signal demodulated in demodulator if the serial data includes an address of its own apparatus, monitors a demodulated signal outputted from the demodulator, and outputs transmission data that includes a destination address to the modulator if the controller determines that no signal is being transmitted in the communication wire.

POWER LINE COMMUNICATION SYSTEM

Provided is a power line communication system in which power line communication devices having different configurations from each other coexist. A charging station performs power line communication, using a signal superimposition/separation section in which a capacitor, a coupling transformer, and a capacitor are connected to branch lines branched from two AC lines. An electric vehicle performs power line communication, using a signal superimposition/separation section in which the coupling transformer is inserted in one AC line and a capacitor is connected to and between two AC lines. In a case where the charging station and the electric vehicle are connected to each other with a charging cable, a closed loop circuit is formed that is composed of the AC line, the branch line, the capacitor, a primary coil of the coupling transformer, the capacitor, the branch line, the AC line, an AC line, the AC line, the capacitor, a primary coil of a coupling transformer, the AC line, and an AC line. Thus, power line communication can be performed. 1. A power line communication system in which a first device and a second device connected to each other with two power lines perform communication via the power lines , a signal superimposition/separation section which is connected to two branch lines respectively branched from the two power lines and which superimposes a signal on the power lines and separates a signal superimposed on the power lines; and', 'a power line communication section which performs power line communication via the signal superimposition/separation section, and, 'the first device comprising a signal superimposition/separation section which is inserted in one of the power lines and which superimposes a signal on the power line and separates a signal superimposed on the power line; and', 'a power line communication section which performs power line communication via the signal superimposition/separation section., 'the second device comprising2. The power line ...

POWER LINE COMMUNICATION DEVICE, POWER LINE COMMUNICATION SYSTEM, POWER LINE COMMUNICATION METHOD, AND POWER LINE COMMUNICATION PROGRAM

Provided is a power line communication device capable of performing reliable power line communication, without requiring detection of switching noises. The power line communication device corresponds to an MPPT controller (S) for performing a communication through a power line (PL), and includes a communication unit () that communicates data through the power line (PL), a switch unit (S) that controls supply-power supplied from a PV panel () through the power line (PL), and an MPU () that performs on/off control of the switch unit (S) while avoiding a timing at which data is received by the communication unit (). 1. A power line communication device for performing a communication through a power line , the power line communication device comprising:a communication unit, adapted to communicate data through the power line;a switch unit, adapted to control a supply-power supplied from a power supply through the power line; anda switch control unit, adapted to perform on/off control of the switch unit while avoiding a reception timing which is a timing at which data is received by the communication unit.2. The power line communication device according to claim 1 , whereinthe communication unit receives transmission timing information which is information of a timing at which data is transmitted from another power line communication device, andthe switch control unit performs the on/off control of the switch unit while avoiding the reception timing corresponding to the transmission timing information received by the communication unit.3. The power line communication device according to claim 1 , further comprising:a storage unit for storing transmission timing information which is information of a timing at which data is transmitted by another power line communication device, whereinthe switch control unit performs the on/off control of the switch unit while avoiding the reception timing corresponding to the transmission timing information stored in the storage unit.4. ...

MODULE FOR MANAGING LAMPPOSTS AND SERVICES, AND TELEMANAGEMENT SYSTEM COMPRISING AT LEAST ONE SUCH MODULE

The invention relates to a module for managing the lighting of a lamppost, placed on the power supply network of a set of lampposts and controlled by a command centre. Said module communicates with the command centre by high-speed power line carrier (PLC) and is able to ensure the management of at least one complementary service. The invention also relates to a telemanagement system for public lighting, comprising a command centre for a set of lampposts and at least one such management module, said module communicating with said command centre by high-speed power line carrier (PLC). 1. A module for lamppost management connected to an electric power supply network , said module including electronics which comprises a power line carrier current injector/receiver through which it is connected to the electric network and which allows it to communicate with a control center for notably receiving instructions for switching on/off the lampposts , at least two outputs capable of providing power independently to the lantern(s) of the lamppost and to at least one piece of service equipment associated with the lamppost,', 'at least one port for connecting a computer cable between this piece of equipment and said module,', 'the electronics being positioned in a casing capable of being integrated within the lamppost, on the lamppost or in proximity of the lamppost and including:', 'means capable of controlling independently the power supply outputs according to instructions transmitted by the carrier current by the control center,', 'means for processing and/or transmitting data connected to the port on the one hand and to the carrier current injector/receiver on the other hand, said carrier current injector/receiver being of the type with a high throughput., 'said module is able to ensure management of at least one additional service and includes for this purpose2. The module according to claim 1 , wherein the electronics includes:a motherboard with a PLC injector/receiver ...

POWERLINE COMMUNICATION DIVERSITY COUPLING TECHNIQUE

A powerline communication diversity coupling mechanism may implement a transformer coupling unit. The transformer coupling unit can receive a communication signal to be coupled to a plurality of powerline communication channels for transmission in a powerline communication network. The transformer coupling unit can split the communication signal into a plurality of communication signals for transmission. The transformer coupling unit can couple each of the plurality of the communication signals to a corresponding one of a plurality of the powerline communication channels for transmission in the powerline communication network. Also, the transformer coupling unit can receive a plurality of communication signals on each of a plurality of powerline communication channels. The transformer coupling unit can combine the plurality of the communication signals into a communication signal. The transformer coupling unit may then couple the communication signal to an analog front end and other processing units for processing the communication signal. 1. An apparatus comprising:an analog front end unit configured to process a communication signal; and split the communication signal into a plurality of communication signals for transmission, and', 'couple each of the plurality of the communication signals to a corresponding one of a plurality of powerline communication channels for transmission in a powerline communication network., 'a transformer coupling unit coupled with the analog front end unit, the transformer coupling unit configured to2. The apparatus of claim 1 , wherein the transformer coupling unit comprises a first transformer and a second transformer claim 1 , and wherein the transformer coupling unit configured to split the communication signal into the plurality of the communication signals comprises the transformer coupling unit configured to:receive the communication signal at first and second terminals of a primary winding of the first transformer and at first ...

Power line communication system and method

Exemplary embodiments of the present invention relate to a power line communication (PLC) system. For example, the PLC system may include a PLC server configured to provide electrical power and electronic communications through a PLC bus to a number of electronic devices, such as an instrument cluster, infotainment interface, rear-seat entertainment console, aftermarket accessories, and the like. The PLC system may also include a power system that may be coupled to an electrical grid for charging a battery associated with one or more of the electronic devices. The power system may be communicatively coupled to the PLC bus, enabling the devices coupled to the PLC bus to communicate with a service provider through the electrical grid. The communications between the devices coupled to the PLC bus and remote devices coupled through the electrical grid may be conducted using a common communication protocol.

Retransmission Mechanism for Segmented Frames in Power Line Communication (PLC) Networks

Embodiments of methods and systems for transmitting and receiving segmented frames in a Power Line Communication (PLC) network are disclosed. A transmitter sends a first segment using CSMA/CA based on the priority of frame. All the other segments are transmitted using the CFS slot. When an ACK is received, transmitter sends the next segment after CFS. When a NACK is received, the transmitter sends just the last segment after CFS. If no ACK/NACK is received, the transmitter sends the last segment using CSMA/CA. If a NO_EARLIER_SEGMENTS delimiter is received, the transmitter sends the frame starting from the first segment using CSMA/CA. A receiver may send the NO_EARLIER_SEGMENTS delimiter when no earlier segments are in a receive buffer for reassembly. If the receiver is expecting to continue the reassembly of another frame when a segment is received, the receiver may transmit a BUSY_REASSEMBLY delimiter. 1. A method for transmitting segmented frames in a power line communication (PLC) network , comprising:transmitting frame segments to a receiver via a PLC channel; andretransmitting a most-recent segment to the receiver, if a negative acknowledgment or no acknowledgement is received for the most-recent segment.2. The method of claim 1 , further comprising;retransmitting the frame segments to the receiver starting with a first segment, if a no-earlier-segments indication or a busy-reject indication is received.3. The method of claim 2 , further comprising:using Carrier Sense Multiple Access with Collision Avoidance (CSMA/CA) before retransmitting the frame segments, if a no-earlier-segments indication is received.4. The method of claim 2 , further comprising:retransmitting the frame segments after an Extended InterFrame Space (EIFS) period, if a busy-reject indication is received.5. The method of claim 2 , wherein the no-earlier-segments indication or busy-reject indication is a delimiter in a frame control header.6. The method of claim 2 , wherein the busy-rejection ...

Coexitstence primitives in power line communication networks

Systems and methods for setting a Network Allocation Vector (NAV) in a PLC node are disclosed. In a PLC standard, coexistence is achieved by having the nodes detect a common preamble and backing off by a Coexistence InterFrame Space (cEIFS) time period to help the node to avoid interfering with the other technologies. In one embodiment, a PHY primitive is sent from the PHY to the MAC know that there has been a preamble detection. A two-level indication may be used—one indication after receiving the preamble and other indication after decoding the entire frame. The MAC sets NAV to EIFS if a native preamble is detected. The MAC sets NAV to cEIFS if only a coexistence preamble is detected or if a non-native preamble is detected. 1. A method , comprising: detecting a coexistence preamble on a PLC channel;', 'configuring a preamble indication primitive in a first format if a native preamble is detected in addition to the coexistence preamble;', 'configuring the preamble indication primitive in a second format if a native preamble is not detected in addition to the coexistence preamble; and', 'sending the preamble indication primitive from a PHY layer to a MAC layer on the PLC device., 'performing by a power line communication (PLC) device,'}2. The method of claim 1 , further comprising:setting a network allocation vector (NAV) based upon the preamble indication primitive.3. The method of claim 2 , further comprising:setting the NAV to a first interframe spacing value, if a native preamble is detected in addition to the coexistence preamble; andsetting the NAV to a second interframe spacing value, if a native preamble is not detected in addition to the coexistence preamble.4. The method of claim 1 , further comprising:setting a network allocation vector (NAV) to a native extended interframe spacing (EIFS) value, if a native preamble is detected in addition to the coexistence preamble; andsetting the NAV to a coexistence extended interframe spacing (cEIFS), if a native ...

NOISE DETECTION METHOD, NOISE DETECTION APPARATUS, SIMULATION METHOD, SIMULATION APPARATUS, AND COMMUNICATION SYSTEM

For voltage values (observed noise sequence) in an electronic power line (communication medium) which are obtained at a predetermined interval, initial values of noise characteristics based on a statistic of the observed noise sequence itself are decided by a moment method (S to S), the noise characteristics (state transition probabilities and state noise power) for maximization of the likelihood of the observed noise sequence are obtained from the initial values by MAP (Maximum A Posteriori) estimation using a Baum-Welch algorithm (S to S), a state sequence is estimated from the obtained noise characteristics, and an impulsive noise at each time point is detected. 1. A noise detecting method for detecting a noise occurred in a communication medium , the method comprising the steps of;(a) measuring a signal level in the communication medium at a predetermined interval;(b) extracting, as an observed noise sequence, a measurement result for a predetermined measurement periodical unit;(c) calculating, from the extracted observed noise sequence, a noise characteristic by using a hidden Markovian-Gaussian noise model;(d) calculating, from the calculated noise characteristic and the observed noise sequence, an estimated state sequence that is a sequence indicative of whether or not a state is a noise-occurred state;(e) individually detecting, from the estimated state sequence, an impulsive noise at each time point within the measurement periodical unit; and(f) determining, based on the calculated noise characteristic, the presence or absence of occurrence of an impulsive noise for the measurement periodical unit,wherein the estimated state sequence is calculated as a sequence including a state, in which an impulsive noise is occurred, or a state, in which no impulsive noise is occurred, for each section equivalent to one or a plurality of the intervals, andin the step (f), the determination is made based on at least one of a temporal concentration of an impulsive noise, ...

Wireless Network Devices Configurable via Powerline Communications Networks

A communications device includes a wireless communications interface, a power line carrier (PLC) communications interface, and processing circuitry coupled to the wireless communications interface and to the PLC communications interface. The communications device sends a request for wireless communications interface operational parameters via the PLC communications interface, receives a response via the PLC communications interface that includes wireless operational parameters, and configures the wireless communications interface based upon the response. In another operation, the processing circuitry is operable to listen for transmissions of at least one Wireless Access Point (WAP) of the wireless network. When transmissions of the at least one the WAP of the wireless network meets a sufficiency threshold, receive data service via the wireless communications interface and when the transmissions of the at least one the WAP of the wireless network fail to meet the sufficiency threshold, receive data service via the PLC communications interface. 1. A communications device comprising:a wireless communications interface;a power line carrier (PLC) communications interface; send a request for wireless operational parameters via the PLC communications interface to a second communications device;', 'receive a response via the PLC communications interface from the second communications device, the response including wireless operational parameters;', 'configure the wireless communications interface with the wireless operational parameters; and', 'communicate with the second communications device via one of the wireless communications interface and the PLC communications interface based upon service quality available via the PLC communications interface and the wireless communications interface., 'processing circuitry configured to2. The communications device of claim 1 , wherein the processing circuitry is configured to send the request upon one of:power-up;restart;reset; ...