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Небесная энциклопедия

Космические корабли и станции, автоматические КА и методы их проектирования, бортовые комплексы управления, системы и средства жизнеобеспечения, особенности технологии производства ракетно-космических систем

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Мониторинг СМИ

Мониторинг СМИ и социальных сетей. Сканирование интернета, новостных сайтов, специализированных контентных площадок на базе мессенджеров. Гибкие настройки фильтров и первоначальных источников.

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Применить Всего найдено 4325. Отображено 100.
17-05-2021 дата публикации

Датчик давления фундаментной плиты на грунт

Номер: RU0000204257U1
Автор: Роман Витальевич Пункевич
Принадлежит: Роман Витальевич Пункевич

Полезная модель относится к измерительной технике, в частности, к измерениям величины давления фундаментной плиты на грунт таких сооружений, как реакторные отделения АЭС, мосты, плотины, высотные здания, и может быть использована в системах мониторинга за напряженно-деформированным состоянием грунтов.Снижение весогабаритных характеристик и повышение надежности датчика давления фундаментной плиты на грунт достигается благодаря тому, что датчик давления фундаментной плиты на грунт содержит цилиндрический корпус, жесткий диск, упругий элемент, расположенный по оси симметрии корпуса и жесткого диска. В полость, имеющуюся внутри упругого элемента и жесткого диска, помещена опора, выполненная в виде цилиндра с внутренней полостью, внутри которой находится измерительное устройство, расположенное по оси упругого элемента и выполненное в виде многогранника с не менее чем тремя гранями. На каждой грани многогранника закреплена натянутая струна с электромагнитной системой, при этом оси струн расположены симметрично оси упругого элемента и образуют каналы измерения силы. Один конец измерительного устройства прикреплен к выступу упругого элемента, расположенному по его оси, а второй конец закреплен к торцевой поверхности опоры. Другая торцевая поверхностью опоры, со стороны полости, соосно прикреплена к ненагруженной части упругого элемента, входящей в полость жесткого диска. 2 ил. РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 204 257 U1 (51) МПК G01L 7/00 (2006.01) G01L 9/04 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ОПИСАНИЕ ПОЛЕЗНОЙ МОДЕЛИ К ПАТЕНТУ (52) СПК G01L 7/00 (2021.02); G01L 9/04 (2021.02) (21)(22) Заявка: 2019142416, 12.12.2019 (24) Дата начала отсчета срока действия патента: (73) Патентообладатель(и): Пункевич Роман Витальевич (RU) Дата регистрации: 17.05.2021 Приоритет(ы): (22) Дата подачи заявки: 12.12.2019 (45) Опубликовано: 17.05.2021 Бюл. № 14 2 0 4 2 5 7 R U (54) ДАТЧИК ДАВЛЕНИЯ ФУНДАМЕНТНОЙ ПЛИТЫ НА ГРУНТ (57) Реферат: Полезная модель ...

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Номер записи: 1
26-08-2021 дата публикации

Датчик давления с компенсацией изменения объема жидкости при её кристаллизации

Номер: RU0000206162U1
Автор: Алексей Александрович Кривоногов, Сергей Евгеньевич Вазарцев
Принадлежит: Акционерное общество "Промышленная группа "Метран" (АО "ПГ "Метран")

Полезная модель относится к измерительной технике, а именно к измерению постоянного или медленно меняющегося давления жидких веществ с помощью элементов, чувствительных к механическому воздействию или давлению упругой среды с помощью упругодеформируемых элементов, в частности, с гибкой диафрагмой и может использоваться в тензометрических датчиках давления.Задачей является обеспечение стойкости датчика давления, тензометрического сенсора и изолирующей (разделительной) мембраны при работе датчика в условиях замерзания измеряемой жидкости.Заявляемый датчик давления с компенсацией изменения объема жидкости при кристаллизации включает в себя корпус датчика 1 давления, имеющий чувствительный элемент 2, выполненный с возможностью изменения параметров в ответ на его деформацию и соединенный с измерительной схемой 3, изолирующую мембрану 4, выполненную с возможностью контакта с рабочей текучей средой 5 и деформации в ответ на ее давление и соединенную с корпусом датчика 1 давления посредством несжимаемой заполняющей, например, силиконовой текучей среды 6. Текучая среда 6 соединена с расположенным между корпусом датчика 1 давления и рабочей текучей средой 5 демпфером 7. Демпфер 7 служит для компенсации деформаций при фазовом переходе рабочей среды 5 «жидкость - твердое тело», расположен с внешней стороны изолирующей мембраны 4 между ней и штуцером 9 в полости 8 и представляет собой конструктивный элемент, выполненный с возможностью изменения объема в зависимости от давления. Так, демпфер 7 может быть выполнен в виде, например, прокладки из пенополиуретановой резины или газонаполненного каучука, коробчатой мембраны, сильфонного узла и др. При этом корпус датчика 1 закреплен в штуцере 9.Использование демпфера для компенсации деформаций при фазовом переходе рабочей среды «жидкость - твердое тело» в совокупности с его расположением с внешней стороны изолирующей мембраны между мембраной и штуцером и выполнением его в виде конструктивного элемента, имеющего возможность изменения ...

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Номер записи: 2
19-01-2012 дата публикации

Remote monitoring systems and methods

Номер: US20120016607A1
Автор: Brett Richard Alexander Harnish, Charles Anthony Lickteig, Chester Bing Dang, Daniel Dazhang Ying, George Mark Zolkiewski, James Po Kong, Kenneth John Innes, Kwi-Cheng Lee, Mark Theodoor Van Latum, Matthew Charles Polley, Michael Edward Cottrell, Robert Frank Parchewsky, Rong Pieter Gul, Steven Michael Schultheis, Wilhelmus Antonius Hardeveld, Wilhelmus Ravesloot
Принадлежит: Individual

A system for monitoring an industrial process, comprising one or more sensors connected to one or more operating components of the industrial process; a remote monitoring station, comprising a computer and a database; and a connection between the one or more sensors and the remote monitoring station, wherein the remote monitoring station is at least about 100-2500 miles away from the industrial process, for example 500-1000 miles.

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Номер записи: 3
10-05-2012 дата публикации

Membrane for Oil Compensation

Номер: US20120111437A1
Автор: Benoit Deville, Frederic Pauchet
Принадлежит: Schlumberger Technology Corp

A membrane to compensate for effects on a volume of oil, the membrane is a metal capable of an elastic deformation and having a shape selected to optimize the elastic deformation in a desired manner so as to compensate for the effects on the volume of oil.

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Номер записи: 4
13-12-2012 дата публикации

Unrolling tube pressure sensor

Номер: US20120312100A1
Автор: Alexander H. Slocum
Принадлежит: Individual

A pressure measuring device includes a partially coiled tube having a closed end and an opposite open end. The closed end is rolled and set into a coiled configuration. The device also includes a partially coiled tube supporting structure having a pressure indicating scale. The supporting structure holds the partially coiled tube such that the open end of the tube is in communication with a fluid whose pressure is to be measured. Pressure applied by the fluid causes the tube to unroll and the closed end of the tube to be visibly displaced relative to the pressure indicating scale by a distance related to the pressure applied by the fluid.

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Номер записи: 5
21-03-2013 дата публикации

CORROSION RESISTANT ISOLATOR ASSEMBLY FOR PROCESS DEVICES

Номер: US20130068029A1
Автор: Klosinski Andrew J., Linse Vonne D., Romo Mark G.
Принадлежит:

A process device has a process seal for coupling to an industrial process. The process device includes a process device body having an isolation cavity and an isolation passageway extending from the isolation cavity to a pressure sensor. The isolation cavity and isolation passageway filled with an isolation fluid. An isolation diaphragm is positioned to isolate the isolation cavity from process fluid. The isolation diaphragm has a process fluid side and an isolation fluid side. A weld ring is positioned around a periphery of the process fluid side of the isolation diaphragm. The weld ring is formed of a first material compatible with the isolation diaphragm and a second material compatible with the process device body. A weld secures the weld ring to the process device body. 1. A process device having process seal for coupling to an industrial process , comprising:a process device body having an isolation cavity and an isolation passageway extending from the isolation cavity to a pressure sensor, the isolation cavity and isolation passageway filled with an isolation fluid;an isolation diaphragm positioned to isolate the isolation cavity from process fluid, the isolation diaphragm having a process fluid side and an isolation fluid side;a weld ring positioned around a periphery of the process fluid side of the isolation diaphragm, the weld ring being formed of a first material compatible with the isolation diaphragm and a second material compatible with the process device body; anda weld securing the weld ring to the process device body.2. The process device of claim 1 , wherein the first and second materials of the weld ring are joined by an explosion-welded interface.3. The process device of claim 2 , wherein the interface is an inclined interface.4. The process device of claim 1 , wherein the first material is tantalum.5. The process device of claim 4 , wherein the second material is stainless steel.6. The process device of claim 1 , wherein the second material is ...

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Номер записи: 6
21-03-2013 дата публикации

METHOD AND DEVICE FOR DETERMING THE PRESSURE OR VOLUMETRIC FLOW OF MEDICAL FLUIDS

Номер: US20130072846A1
Автор: Heide Alexander, Klewinghaus Juergen, Partenfelder Robin, Peters Arne, Wiktor Christoph
Принадлежит: FRESENIUS MEDICAL CARE DEUTSCHLAND GMBH

A method for determining a pressure of a medical fluid in a fluid line by using at least one centrifugal pump includes detecting the pressure upstream of the centrifugal pump while considering an information about a pressure downstream of the centrifugal pump, or detecting the pressure downstream of the centrifugal pump while considering an information about a pressure upstream of the centrifugal pump. Thereby, at least one information about the volume flow in the fluid line and/or at least one information about a rotation speed of the centrifugal pump are considered, respectively. The invention also relates to a method for determining a volume flow, an arithmetic unit, a treatment apparatus, a digital storage means, a computer program product and a computer program. 118-. (canceled)19. A method for determining a pressure of a medical fluid in a fluid line by using at least one centrifugal pump , the method comprising:detecting a pressure upstream of the centrifugal pump while considering an information about a pressure downstream of the centrifugal pump, or detecting a pressure downstream of the centrifugal pump while considering an information about a pressure upstream of the centrifugal pump, wherein each detecting is also under the consideration of at least one information about a volume flow in the fluid line and/or at least one information about a rotation speed of the centrifugal pump.20. A method for determining a volume flow of a medical fluid in a fluid line by using at least one centrifugal pump , the method comprising:detecting a volume flow in the fluid line or an information thereabout while considering a pressure upstream and a pressure downstream of the centrifugal pump, as well as at least one information about a rotation speed of the centrifugal pump.21. The method according to claim 19 , wherein the pressure of the medical fluid is determined in an extracorporeal volume flow.22. The method according to claim 19 , wherein determination of the ...

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Номер записи: 7
28-03-2013 дата публикации

Process fluid pressure transmitter with separated sensor and sensor electronics

Номер: US20130074604A1
Автор: David A. Broden, John Schulte, Robert C. Hedtke
Принадлежит: Rosemount Inc

A process fluid pressure transmitter has a remote pressure sensor. The transmitter includes an electronics housing and a loop communicator disposed in the electronics housing and being configured to communicate in accordance with a process communication protocol. A controller is disposed within the electronics housing and is coupled to the loop communicator. Sensor measurement circuitry is disposed within the electronics housing and is coupled to the controller. A remote pressure sensor housing is configured to couple directly to a process and is spaced from the electronics housing. A pressure sensor is disposed within the remote pressure sensor housing. The pressure sensor forms at least one electrical component having an electrical characteristic that varies with process fluid pressure. Portions of the electrical component are coupled directly to a multiconductor cable that operably connects the pressure sensor to the sensor measurement circuitry.

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Номер записи: 8
18-04-2013 дата публикации

System and Method for Determining Whether a Locomotive in a Consist is in Leading Mode or Trailing Mode

Номер: US20130096740A1
Автор: LIBERATORE Aldo
Принадлежит: ZTR CONTROL SYSTEMS

By taking a pressure reading at a particular port on a multiple-unit braking valve, e.g. the MU-2-A valve, and comparing such a reading to a main reservoir pressure, one can identify whether the locomotive in which the valve is situated is in trailing mode or leading mode. In particular, it was found that the pressure on port of the MU-2-A valve is indicative of which mode the locomotive is in since port is exhausted to atmosphere in lead mode whereas it is at or near the pressure in the main reservoir which is readily distinguishable from atmosphere. 1. A system for determining whether a locomotive in a consist is in a leading mode or a trailing mode , the system comprising:a first fluidly communicative connection to a port of a valve on the locomotive, the port providing different pressure readings when the locomotive is in the leading mode and the trailing mode;a pressure measurement device in communication with the first fluidly communicative connection for obtaining a pressure measurement at the port, wherein a comparison of the pressure measurement at the port to a value associated with a pressure of another component in the locomotive is indicative of whether the locomotive is in the leading mode or the trailing mode.2. The system of claim 1 , wherein the other component in the locomotive is a main reservoir.3. The system of claim 2 , wherein the port on the valve is exhausted to atmosphere in one of the leading mode and trailing mode and substantially similar to the pressure in the main reservoir in the other of the leading mode and trailing mode.463. The system of claim 3 , wherein the port is port of an MU-2-A valve.5. The system of claim 1 , wherein the pressure measurement device is configured to perform the comparison.6. The system of claim 5 , wherein the pressure measurement device comprises a pressure switch connected to the port claim 5 , the pressure switch providing as an output claim 5 , either one signal for indicating that the locomotive is in ...

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Номер записи: 9
25-04-2013 дата публикации

LOW PASS FILTER SEMICONDUCTOR STRUCTURES FOR USE IN TRANSDUCERS FOR MEASURING LOW DYNAMIC PRESSURES IN THE PRESENCE OF HIGH STATIC PRESSURES

Номер: US20130098159A1
Автор: Kochman Boaz, KURTZ ANTHONY D., Shang Tonghuo
Принадлежит: Kulite Semiconductor Products, Inc.

A semiconductor filter is provided to operate in conjunction with a differential pressure transducer. In one embodiment, a method comprises receiving, at a filter, a pressure, wherein the pressure includes a static pressure component and a dynamic pressure component; filtering, by the filter, at least the dynamic pressure component of the pressure; outputting, from the filter, a filtered pressure; receiving, at a first surface of a diaphragm, the pressure; receiving, at a second surface of the diaphragm, the filtered pressure, wherein the second surface of the diaphragm is operatively coupled to the filter; and measuring, at a sensor operatively coupled to the diaphragm, a difference between the pressure and the filtered pressure. 1. A method , comprising:receiving, at a filter, a pressure, wherein the pressure includes a static pressure component and a dynamic pressure component;filtering, by the filter, at least the dynamic pressure component of the pressure;outputting, from the filter, a filtered pressure;receiving, at a first surface of a diaphragm, the pressure;receiving, at a second surface of the diaphragm, the filtered pressure, wherein the second surface of the diaphragm is operatively coupled to the filter; andmeasuring, at a sensor operatively coupled to the diaphragm, a difference between the pressure and the filtered pressure.2. The method of claim 1 , wherein the filtering includes attenuating the dynamic pressure component of the pressure.3. The method of claim 2 , wherein the attenuating includes high frequency attenuation of the dynamic pressure component of the pressure.4. The method of claim 1 , wherein the filter includes a helical structure claim 1 , wherein the helical structure includes a depth and a length sufficient to filter at least the dynamic pressure component.5. The method of claim 1 , wherein the filter is fabricated on a semiconductor wafer having a semiconductor substrate.6. The method of claim 5 , wherein the filter includes a ...

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Номер записи: 10
02-05-2013 дата публикации

CONTROL VALVE DIAGNOSTICS

Номер: US20130110418A1
Автор: Nousiainen Sami
Принадлежит: METSO AUTOMATION OY

In a diagnosis method of a control valve, position data representing a position of a control valve, and pressure data representing a pressure difference over a valve actuator, and optionally travel direction of the control valve, is measured during online operation of the control valve. The position data and the pressure difference data are processed to contain data around starting points of a plurality of individual travel movements of the control valve during normal online operation of the control valve. Finally, a valve signature graph of the control valve is determined based on the processed position and pressure difference data, collected at a plurality of points along the travel range of the control valve during online operation of the control valve. 1. A method for diagnosing a control valve , comprising measuring position data representing a position of a control valve , and pressure data representing a pressure difference over a valve actuator , and optionally travel direction of the control valve , during online operation of the control valve ,processing the position data and the pressure difference data to contain data around starting points of a plurality of individual travel movements of the control valve during normal online operation of the control valve, anddetermining a valve signature graph of the control valve based on the processed position and pressure difference data, collected at a plurality of points along the travel range of the control valve during online operation of the control valve.2. A method according to claim 1 , comprisingproviding the processed data with time stamps, anddetermining the valve signature graph of the control valve for any desired period of time based on the time-stamped processed position, pressure difference and travel direction data.3. A method according to claim 1 , comprisingproviding the processed data with time stamps, andforming a graph depicting the value of at least one of the processed position data, the ...

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Номер записи: 11
09-05-2013 дата публикации

PRESSURE GAUGE

Номер: US20130112003A1
Автор: Yamauchi Takeshi
Принадлежит: KOGANEI CORPORATION

A pressure gauge has an indicator needle and a scale plate. A preset pressure indicating member extending along a pressure scale in a circular arc pattern is slidably attached to a front wall of a case, and provided with a first display section. An opaque shield portion provided with a second display section at one end thereof is provided to a transparent cover rotatably attached to the front wall. The transparent cover drives the preset pressure indicating member to set a preset pressure range between the first display section and the second display section which is observable from the outside through the transparent cover. 1. A pressure gauge including an indicator needle to be rotated by an angle corresponding to pressure of fluid , and a scale plate marked with a pressure scale which is indicated by the indicator needle along a rotation path of the indicator needle , the pressure gauge comprising:a pressure gauge main body including the scale plate and the indicator needle, and being provided with a pressure measuring device configured to rotate the indicator needle corresponding to the pressure of fluid;a front wall formed with a circular guide hole and attached to the pressure gauge main body, the scale plate being exposed to the outside through the circular guide hole;an arc-shaped preset pressure indicating member extending along the pressure scale in a circular arc pattern, and being provided with a first display section at one end thereof, the preset pressure indicating member being slidably attached to the front wall along the guide hole;a transparent cover rotatably attached to the front wall, and configured to cover the preset pressure indicating member and the scale plate;an opaque shield portion extending along the pressure scale in a circular arc pattern, and being provided to the transparent cover, and provided with a second display section at one end thereof; anda driving pawl portion provided to the transparent cover, and configured to come into ...

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Номер записи: 12
16-05-2013 дата публикации

PHYSICAL QUANTITY DETECTOR

Номер: US20130118263A1
Автор: Kitahara Naoki, SATO Kenta
Принадлежит: SEIKO EPSON CORPORATION

A physical quantity detector includes a diaphragm including a displacement part that is displaced under external pressure, a ring-shaped fixing part that holds an outer circumferential part of the diaphragm, a holding member having a projection part that projects from an inner circumference of the fixing part toward a center at one surface side of the diaphragm, a support fixed to the projection part, and a pressure-sensitive device having a first base part fixed to the displacement part, a second base part fixed to the support, and a pressure-sensitive part provided between the base parts. 1. A physical quantity detector comprising:a pressure receiving unit including a displacement part that is displaced under pressure and an outer circumferential part provided on an outer circumference of the displacement part;a holding member including a fixing part in an circumferential shape in a plan view, and a projection part that projects from an inner circumference of the fixing part toward a center in the plan view;the projection part having an opening and provided on one surface side of the pressure receiving unit, and the fixing part holding the outer circumferential part so that at least one part of the displacement part at the one surface side of the pressure receiving unit may be located within the opening in the plan view from the projection part side,a support fixed to the projection part; anda pressure-sensitive device including a first base part fixed to the at least one part of the displacement part, a second base part fixed to the support, and a pressure-sensitive part provided between the first base part and the second base part, the first base part and the second base part stood in line in a direction in which the displacement part is displaced.2. The physical quantity detector according to claim 1 , wherein the projection part is provided in an annular shape in the fixing part.3. The physical quantity detector according to claim 1 , wherein the support ...

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Номер записи: 13
16-05-2013 дата публикации

Hemodynamic pressure sensor test system and method

Номер: US20130123619A1
Автор: Leon T. Griggs
Принадлежит: ACIST Medical Systems Inc

A pressure sensor suitable for use in a powered contrast injector system may be tested to help validate the operability and/or integrity of the sensor. In some examples, the pressure sensor may be tested by generating a pressure pulse in a fluid line fluidly connected to the pressure sensor so as to generate a first pressure reading. A high pressure fluid at a pressure above a maximum operating pressure of the pressure sensor may be conveyed through a valve fluidly connected to the pressure sensor. Subsequent to conveying the high pressure fluid through the valve, the pressure sensor may again be tested by generating a pressure pulse in the fluid line fluidly connected to the pressure sensor so as to generate a second pressure reading. In some examples, the first pressure reading is compared to the second pressure reading to determine whether the pressure sensor has passed or failed.

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Номер записи: 14
23-05-2013 дата публикации

REMOTE FIRE EXTINGUISHER STATION INSPECTION

Номер: US20130125660A1
Автор: JR. John J., McSheffrey, McSheffrey Brendan T.
Принадлежит:

An apparatus for remote inspection of fire extinguishers at one or a system of fire extinguisher stations includes, e.g., at each fire extinguisher station: a detector for lack of presence of a fire extinguisher in its installed position at the fire extinguisher station; a detector for out-of-range pressure of contents of the fire extinguisher at the fire extinguisher station; a detector for an obstruction to viewing of or access to the fire extinguisher at the fire extinguisher station; and a device for transmission of inspection report information from the fire extinguisher station to a remote central station. 1. An apparatus for remote inspection of portable tanks , the apparatus comprising:a portable tank defining a volume;a gauge disposed in communication with the volume defined by the portable tank, the gauge detecting and displaying a pressure condition of a content contained within the volume with a gauge pointer;a Reed switch sensor that detects an out-of-range pressure condition of the content contained within the volume based upon a proximity of the gauge pointer to a position indicating the out-of-range pressure condition;an electronic circuit including a timer set to actuate at least one of a visual signal and an audio signal after a recommended period between inspections of the gauge, unless the timer is reset during the recommended period; andan electronic circuit disposed in communication with the gauge and adapted to signal to a remote central station upon detection of the out-of-range pressure condition by the Reed switch.2. The apparatus of claim 1 , further comprising one or more additional sensors for detecting at least one predetermined condition other than the out-of-range pressure condition.3. The apparatus of claim 2 , wherein the at least one predetermined condition includes a lack of presence of a portable tank in its installed position.4. The apparatus of claim 3 , wherein the at least one predetermined condition includes an obstruction ...

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Номер записи: 15
06-06-2013 дата публикации

Inflation Probe Device with Measurement of Inflation Pressure

Номер: US20130139601A1
Автор: McKinley Kerry M., Tschantz Michell C.
Принадлежит:

An inflation device for airbags has an inflation tube insertable through the airbag inflation valve, the inflation tube having a distal end. A handle mounts the inflation tube and is connected to an inflation gas source. A delivery valve controls inflation gas flow through inflation tube. A pressure gauge has an input and conduit extending therefrom along the inflation tube and to the end of the inflation tube for ascertaining inflation pressure within the airbag. The delivery valve is operated to achieve a desired inflation pressure. The inflation tube has gas delivery openings through its side walls laterally delivering inflation gas to the airbag. The inflation tube and pressure gauge conduit are inserted together through the airbag inflation valve, so that inflation pressure is monitored substantially concurrently with inflation. 1. An inflation device for airbags the type having an inflation valve , comprising:A) an inflation tube adapted for delivering inflation gas through the inflation valve of an airbag and delivering inflation gas into the airbag; the inflation tube having a distal end;B) a handle mounting the inflation tube extending therefrom to its distal end, the handle adapted for connection to a source of pressurized inflation gas;C) delivery valve controlling the flow of pressurized inflation gas to and through the inflation tube;D) a pressure gauge with an input orifice; andE) a pressure gauge conduit extending from the input orifice of the pressure gauge along the inflation tube and terminating in a distal end of the pressure gauge conduit at or adjacent to the distal end of the inflation tube, wherein the distal end of the pressure gauge conduit is exposed to and is in pressure communication with the inflation pressure of the airbag and transmits that inflation pressure to the pressure gauge;whereby the delivery valve may be operated to achieve a desired inflation pressure of the airbag as indicated on the pressure gauge.2. An inflation device as ...

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Номер записи: 16
06-06-2013 дата публикации

Micro-Fluidic Dead-End Channel Structure For Pressure Measurement Within A Fluid Channel On The Basis Of The Change Of The Volume Of A Trapped Gas Bubble

Номер: US20130139602A1
Автор: Geipel Andreas
Принадлежит: ROCHE DIAGNOSTICS INTERNATIONAL AG

A device for detecting pressure and/or temperature changes in a fluid-channel and method thereof are disclosed. The device includes a main duct with an inlet and an outlet, a branch ductwork with a first branch end branching off the main duct downwards the inlet and with a second branch end discharging into the main duct upwards the outlet, and at least one dead-end channel with a first end that branches off the branch ductwork and a second closed end. The dead-end channel is adapted to trap a gas bubble within the dead-end channel when the device is primed or filled with a liquid fluid, wherein the gas bubble changes its size or position if a change in pressure or temperature occurs in the device. 1. A method for detecting a change in pressure and/or temperature in a fluid channel comprising: a branch ductwork branches off the main duct downwards of the inlet such that the liquid fluid is led through the main duct and the branch ductwork, and', 'at least one dead-end channel branches off the branch ductwork such that the liquid fluid passing by is hemming air in the at least one dead-end channel whereby a gas bubble is situated in the at least one dead-end channel; and, 'feeding a liquid fluid into a main duct through an inlet, whereindetecting a change in size and/or position of the gas bubble, wherein the size and/or position of the gas bubble changes if a change in pressure and/or temperature occurs inside the fluid channel, and wherein the branch ductwork prevents an expanding gas bubble from escaping into the main duct.2. The method of claim 1 , wherein the size of the gas bubble increases when the temperature inside the fluid channel rises claim 1 , and wherein the size of the gas bubble decreases when the temperature inside the fluid channel decreases.3. The method of claim 1 , wherein the size of the gas bubble decreases when the pressure inside the fluid channel increases claim 1 , and wherein the size of the gas bubble increases when the pressure inside ...

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Номер записи: 17
06-06-2013 дата публикации

JOINTLESS PRESSURE SENSOR PORT

Номер: US20130139603A1
Автор: Bratek Daniel J., Kang Yanling, Kosberg Robert C.
Принадлежит: CONTINENTAL AUTOMOTIVE SYSTEMS, INC.

A jointless pressure sensor port which includes a body portion, a flange portion integrally formed with the body portion, and a cylindrical portion integrally formed with and extending away from the flange portion. The port also includes an aperture having a first area, where the aperture is formed as part of the cylindrical portion. A channel is located along an axis and has at least one channel region. The channel at least partially extends through the cylindrical portion, the flange portion, and the body portion. A diaphragm includes a second area which is larger than the first area, the diaphragm also has a top surface and a bottom surface. A pressure sensor is disposed on the top surface, and the diaphragm is substantially perpendicular to the axis of the channel. The body portion, flange portion, and cylindrical portion form a jointless and seamless pressure sensor part. 1. An apparatus , comprising: a channel located along an axis;', 'at least one channel region formed as part of the channel;', 'an aperture having a first area, the at least one channel region in fluid communication with the aperture; and', 'a diaphragm being substantially perpendicular to the axis of the channel, the diaphragm having a second area which is larger than the first area;', 'wherein pressure sensor part is jointless and seamless., 'a pressure sensor part, including2. The apparatus of claim 1 , the pressure sensor part further comprising:a body portion;a flange portion integrally formed with the body portion; anda cylindrical portion integrally formed with and extending away from the flange portion, the channel at least partially extending into the body portion, the flange portion, and the cylindrical portion;wherein the body portion, the flange portion, and the cylindrical portion are jointless and seamless.3. The apparatus of claim 1 , the at least one channel region further comprising:a first end having an area which substantially matches the first area; anda second end having ...

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Номер записи: 18
06-06-2013 дата публикации

Pressure sensor having nanostructure and manufacturing method thereof

Номер: US20130140611A1
Автор: Jeong Hoon Lee, Jin Seok Kim, Jun-Kyo Francis SUH, Sung Chul Kang
Принадлежит: Korea Advanced Institute of Science and Technology KAIST

The present disclosure relates to a pressure sensor having a nanostructure and a method for manufacturing the same. More particularly, it relates to a pressure sensor having a nanostructure attached on the surface of the pressure sensor and thus having improved sensor response time and sensitivity and a method for manufacturing the same. The pressure sensor according to the present disclosure having a nanostructure includes: a substrate; a source electrode and a drain electrode arranged on the substrate with a predetermined spacing; a flexible sensor layer disposed on the source electrode and the drain electrode; and a nanostructure attached on the surface of the flexible sensor layer and having nanosized wrinkles.

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Номер записи: 19
20-06-2013 дата публикации

Weatherstrip incorporating pinch sensor, new pinch sensors, and associated method

Номер: US20130152472A1
Автор: Eric Drozd, John Zimmer, Sean Scott
Принадлежит: Cooper Standard Automotive Inc

A weatherstrip such as a glass run incorporates an associated anti-entrapment sensor. The glass run includes an elastomeric material having first and second legs interconnected by a base wall that together receive an associated automotive window peripheral edge and a recess formed in the elastomeric material dimensioned to receive the associated anti-entrapment sensor therein. The recess has a substantially T-shaped cross-sectional cavity in one embodiment and the pinch sensor has a substantially T-shaped cross-sectional conformation dimensioned for mating receipt in the T-shaped cavity. Facing, first and second flexible sidewall portions flex for ease of insertion and retention of the pinch sensor in the cavity. A fusible layer secures the weatherstrip and pinch sensor after assembly thereof. Preferably, the weatherstrip is formed from multiple materials, one of which is a low friction material.

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Номер записи: 20
25-07-2013 дата публикации

LIQUID PRESSURE SENSING STRUCTURE

Номер: US20130186205A1
Автор: Kao Shen-Mu
Принадлежит:

A liquid pressure sensing structure includes an air pressure sensing member to sense liquid, such as oil or water. A transferring unit is fitted on a sensing end of the air pressure sensing member. The transferring unit includes a diaphragm therein. The diaphragm divides the inside of the transferring unit into a first space and a second space. The first space communicates with the sensing end of the pressure sensing member and is in a seal state. An oil or water pressure source communicates with the second space of the transferring unit. The pressure is able to influence the position of the diaphragm to change the pressure of the first space so that the air pressure sensing member will get the pressure value. The present invention uses the cost-effective air pressure sensing member to sense the pressure of oil or water so as to control and lower the cost. 1. A liquid pressure sensing structure , comprising:a pressure sensing member, the pressure sensing member being a sensing member to sense air, the pressure sensing member comprising a sensing end and a signal output end;an inner body, the inner body having a hollow inside, the inner body having a first space therein, the first space communicating with the sensing end of the pressure sensing member and being in a seal state;an outer body, the outer body having a hollow inside, the outer body being fitted on the inner body, the outer body having a second space therein, the outer body having an input end at a top thereof; anda diaphragm, the diaphragm being sealed connected in the inner body, the first space and the second space are separated by the diaphragm.2. The liquid pressure sensing structure as claimed in claim 1 , wherein the inner body has a stepped inner stop ring formed on an inner wall thereof claim 1 , the inner stop ring cooperating with an inner ring and an inner washer claim 1 , the inner body further having a stepped outer stop ring formed on outer wall thereof.3. The liquid pressure sensing ...

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Номер записи: 21
15-08-2013 дата публикации

PRESSURE DETECTOR

Номер: US20130205907A1
Автор: Fukano Yoshihiro, Uchino Tadashi
Принадлежит: SMC Kabushiki Kaisha

The present invention relates to a pressure detector. In a body that constitutes part of the pressure detector, a through hole is formed, which is directed upwardly from a substantially central portion of a flow passage through which a pressure fluid flows. The through hole communicates with a sensor chamber in which a pressure sensor is disposed, and a rod-shaped member is disposed displaceably in the through hole. In addition, an end of the rod-shaped member, which is exposed to the flow passage, is pressed by the pressure fluid and displaced upwardly thereby, and pressure is detected as a result of the pressure sensor being pressed by a head of the rod-shaped member. 1. A pressure detector comprising a body having a flow passage therein through which a fluid flows , a sensor chamber provided in the body and in which a pressure sensor is arranged , and a through hole that extends from the flow passage to the sensor chamber , and further comprising:a pressure transmitting body disposed in the through hole and displaceable along an axial direction in the through hole, the pressure transmitting body being capable of transmitting a pressure of the fluid to the pressure sensor, one end of the pressure transmitting body extending in the through hole to an end on the side of the flow passage, the one end being constantly exposed to the fluid.2. The pressure detector according to claim 1 , wherein a seal member claim 1 , which blocks flow of fluid between the sensor chamber and the through hole claim 1 , is disposed between the through hole and the pressure sensor.3. The pressure detector according to claim 2 , wherein the seal member includes a hole in the center thereof through which the pressure transmitting body is inserted.4. The pressure detector according to claim 3 , wherein another end of the pressure transmitting body abuts against the pressure sensor.5. The pressure detector according to claim 2 , wherein the seal member is formed integrally with the pressure ...

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Номер записи: 22
15-08-2013 дата публикации

Optical probe containing oxygen, temperature, and pressure sensors and monitoring and control systems containing the same

Номер: US20130206760A1
Автор: Kenneth Susko
Принадлежит: Individual

A probe for measuring oxygen, temperature, and pressure in a space to be monitored, comprising: a housing, comprising a thermally conductive material; an oxygen sensor disposed within the housing, comprising: a first end having coated thereon a coating which fluoresces at a fluorescent frequency when exposed to light having an excitation frequency in the absence of associated oxygen, and which undergoes a dampening of said fluorescence in the presence of associated oxygen; and a second end operatively connected to an optical fiber that extends through the housing; wherein the first end extends through the housing and is adapted to be exposed to the space to be monitored; a temperature sensor disposed within the housing adjacent to the thermally conductive material, comprising a fiber Bragg grating, or a semiconductor material, such as a GaAS material, wherein the temperature sensor does not extend through the housing and is not exposed to the space to be monitored; a pressure sensor disposed within the housing, comprising a fiber Bragg grating or a Fabry-Pérot white light interferometry sensor having a first end which extends through the housing and is adapted to be exposed to the space to be monitored.

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Номер записи: 23
22-08-2013 дата публикации

METHOD FOR MANUFACTURING A CONNECTION BETWEEN TWO CERAMIC PARTS, ESPECIALLY PARTS OF A PRESSURE SENSOR, AND A CERAMIC PRODUCT, ESPECIALLY A CERAMIC PRESSURE SENSOR

Номер: US20130213138A1
Автор: Doms Marco, Drewes Ulfert, Hegner Frank, Müller Jörg, Philipps Michael, Rossberg Andreas
Принадлежит: Endress + Hauser

A method for manufacturing a connection between two ceramic parts comprises: providing a first ceramic part and a second ceramic part; providing an active hard solder, or active braze, on at least one surface section of at least one of the ceramic parts; and heating the active hard solder, or active braze, in a vacuum soldering, brazing process. The entire active hard solder, or active braze, for connecting the first and second ceramic parts is provided in such a manner that at least one surface section of at least one of the ceramic parts, preferably both ceramic parts, is coated by means of gas phase deposition of the alloy of the active hard solder, or active braze. 115-. (canceled)16. A method for manufacturing a connection between two ceramic parts , comprising the steps of:providing a first ceramic part and a second ceramic part;providing an active hard solder, or active braze, on at least one surface section of at least one of the ceramic parts; andheating the active hard solder, or active braze, in a soldering, brazing process, wherein:the entire active hard solder, or active braze, for connecting the first and second ceramic parts is provided in such a manner that at least one surface section of at least one of the ceramic parts, preferably both ceramic parts, is coated by means of gas phase deposition of the alloy of the active hard solder, or active braze, and/or its components.17. The method as claimed in claim 16 , wherein:the gas phase deposition comprises a sputtering process or thermal evaporating, in order to transfer the components of the active hard solder, or active braze, into the gas phase.18. The method as claimed in claim 17 , wherein:the active hard solder, or active braze, has a plurality of components; andin the sputter process, a sputter target is used, which contains the components of the active hard solder, or active braze.20. The method as claimed in claim 16 , wherein:the at least one surface section of the at least one ceramic part ...

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Номер записи: 24
29-08-2013 дата публикации

Methods for making and distributing batches of butane-enriched gasoline

Номер: US20130225883A1
Автор: Larry D. Mattingly, Steven M. Vanderbur
Принадлежит: SUNOCO PARTNERS BUTANE BLENDING LLC

Disclosed are automated methods and systems for certifying the volatility of butane-enriched gasoline downstream of a butane blending operation. Such automated methods and systems provide significant advantages to comply with volatility requirements imposed by EPA or state regulations.

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Номер записи: 25
12-09-2013 дата публикации

REMOTE SEAL PRESSURE MEASUREMENT SYSTEM FOR SUBSEA USE

Номер: US20130233058A1
Автор: Aydar Gokhan, Breen Ivar, Broden David, Miller Brent W., Scheldorf Jay
Принадлежит:

A remote seal assembly for subsea applications is provided. The assembly includes an upper housing having a fluid coupling for coupling the remote seal to a process fluid pressure measurement device. A lower housing is coupled to the upper housing and has an interface that is configured to mount to a pressure vessel. The lower housing also has a process fluid inlet. An isolation diaphragm is disposed between the upper and lower housings. At least one of the upper housing, lower housing and isolation diaphragm are constructed from a material suitable for immersion in saltwater. In some embodiments, the lower housing has a shoulder disposed about the process fluid inlet and a plurality of self-energizing seals configured to couple the assembly to a venturi flow meter body. A subsea process fluid flow measurement system is also provided that includes a pressure transmitter and at least one subsea remote seal assembly. 1. A remote seal assembly for subsea applications , the assembly comprising:an upper housing having a fluid coupling for coupling the remote seal to a process fluid pressure measurement device;a lower housing coupled to the upper housing and having an interface that is configured to mount to a pressure vessel, the lower housing also having a process fluid inlet;an isolation diaphragm disposed between the upper and lower housings; andwherein at least one of the upper housing, lower housing and isolation diaphragm are constructed from a material suitable for immersion in saltwater.2. The remote seal assembly of claim 1 , wherein at least the upper and lower housings are formed of Alloy C-276.3. The remote seal assembly of claim 1 , wherein the upper housing and lower housing are coupled together by a weld.4. The remote seal assembly of claim 3 , wherein the weld is an electron beam weld.5. The remote seal assembly of claim 1 , wherein the lower housing includes a hydrate draining feature.6. The remote seal assembly of claim 1 , wherein the isolation ...

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Номер записи: 26
12-09-2013 дата публикации

Differential pressure sensor

Номер: US20130233085A1
Автор: Jun MIZOGUTI, Tatsuo Tanaka
Принадлежит: Azbil Corp

A differential sensor includes a sensor chip having first and second stopper members provided to first and second faces of a sensor diaphragm, respectively, first and second duct members provided to first and second faces of the sensor chip, having, therein, pressure guiding ducts that guide measurement pressures to the first and second faces of the sensor diaphragm, respectively, and an elastic holding member that applies an elastic force to the first duct member in the direction of the first face of the sensor chip, applies an elastic force to the second duct member in the direction of the second face of the sensor chip, and holds the sensor chip under pressure between the first duct member and the second duct member.

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Номер записи: 27
26-09-2013 дата публикации

IN-LINE CONTACTLESS PRESSURE SENSORS AND METHODS OF MEASURING PRESSURE

Номер: US20130247675A1
Автор: Poissy Stephane
Принадлежит:

A pressure sensor includes a housing that includes an interior surface and an axially symmetric liner disposed along the interior surface of the housing, where the liner includes an interior surface and an exterior surface. The pressure sensor further includes a sensing member that includes an interior surface and an exterior surface, where the interior surface of the sensing member is adjacent to the exterior surface of the liner, and the sensing member is configured to expand with the liner. The pressure sensor further includes a strain gauge affixed to the exterior surface of the sensing member. 1. A pressure sensor comprising:a housing comprising an interior surface;an axially symmetric liner disposed along the interior surface of the housing, wherein the liner comprises an interior surface and an exterior surface;a sensing member comprising an interior surface and an exterior surface, wherein the interior surface of the sensing member is adjacent to the exterior surface of the liner, and the sensing member is configured to expand with the liner; anda strain gauge affixed to the exterior surface of the sensing member.2. The pressure sensor of claim 1 , wherein the liner comprises a chemically inert material.3. The pressure sensor of claim 2 , wherein the chemically inert material comprises polytetrafluoroethylene.4. The pressure sensor of claim 1 , wherein the sensing member comprises a ferrous alloy.5. The pressure sensor of claim 1 , wherein the sensing member comprises a stainless steel alloy.6. The pressure sensor of claim 1 , wherein the housing comprises a ferrous alloy.7. The pressure sensor of claim 1 , wherein the sensing member comprises a sensing ring that surrounds the exterior surface of the liner.8. The pressure sensor of claim 1 , wherein the sensing member comprises a curved metal sheet that at least partially surrounds the exterior surface of the liner.9. The pressure sensor of claim 8 , wherein the curved metal sheet is secured to the housing ...

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Номер записи: 28
26-09-2013 дата публикации

Large diameter flow-through kiel-style probe for high moisture applications

Номер: US20130247686A1
Автор: Tara Ashley COLE, Tonya Lynn WATKINS, Zachary John Snider
Принадлежит: General Electric Co

A Kiel-style pressure probe includes pressure tubing having a remote sending end, the pressure tubing extending through an open-ended shroud, wherein the shroud has a diameter of at least about 0.375 to 0.50 inch and wherein a forward end of the shroud is formed with at least two drainage apertures in proximity to the remote sensing tip of the pressure tubing.

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Номер записи: 29
26-09-2013 дата публикации

ELECTROACTIVE POLYMER BASED PRESSURE SENSOR

Номер: US20130248024A1
Автор: Briese Roger W., Calvo Mario A., Dunn Jason T., Ellis Shawn D., Lambert Todd D., Orstad Tad N., Page John E., Skwiot Timothy
Принадлежит: PARKER-HANNIFIN CORPORATION

A sensor including a buffer material layer configured to at least partially deflect when a force or pressure is imparted on the buffer material layer; and an electroactive polymer (EAP) cartridge in operative contact with the buffer material layer, wherein the EAP cartridge is configured to generate an output signal that corresponds to an amount of strain imparted on the EAP cartridge. The EAP cartridge may be used in a variety of sensing applications including as a pressure sensor integrated into a fluid connector. One aspect of the invention provides for selection of a buffer material layer based upon a desired pressure range. 1. A sensor comprising:a buffer material layer configured to at least partially deflect when a force or pressure is imparted on the buffer material layer; andan electroactive polymer (EAP) cartridge in operative contact with the buffer material layer, wherein the EAP cartridge is configured to generate an output signal that corresponds to an amount of strain imparted on the EAP cartridge.2. The sensor of claim 1 , wherein the output signal of the EAP cartridge corresponds to the force or pressure imparted on the buffer material layer.3. The sensor of claim 1 , wherein the output signal of the EAP cartridge is dependent on a type of material used and/or dimension of the buffer material layer.4. The sensor of claim 1 , wherein the EAP cartridge includes a first electrode layer and a second electrode layer spaced apart by a dielectric layer.5. The sensor of claim 1 , wherein the first electrode layer and the second electrode layer are operatively coupled to a power supply to produce the output signal.6. The sensor of claim 5 , wherein the first electrode layer and the second electrode layer are formed from a compliant conductive material.7. The sensor of claim 6 , wherein the first electrode layer and the second electrode layer include an active capacitive region and a reference capacitive region.8. The sensor of further including a cap feature ...

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Номер записи: 30
10-10-2013 дата публикации

Pressure Sensor and Method for its Manufacture

Номер: US20130263670A1
Автор: Berlinger Andrea, Rossberg Andreas, Schmidt Elke, Selders Peter
Принадлежит: Endress + Hauser GmbH + Co. KG

A method for manufacturing a pressure sensor, comprising: providing a ceramic platform, a ceramic measuring membrane, and an intermediate ring; providing an active braze material by means of gas phase deposition at least on a first surface section of a first surface and on a second surface section of a second surface. The first surface is a platform surface, which is to be connected with the intermediate ring by means of the active hard solder, or braze, or a surface of the intermediate ring, which is to be connected with the platform by means of the active hard solder, or braze. The second surface is a measuring membrane surface, which is to be connected with the intermediate ring by means of the active hard solder, or braze, or a surface of the intermediate ring, which is to be connected with the measuring membrane by means of the active hard solder, or braze. The intermediate ring is positioned between the measuring membrane and the platform; the active hard solder, or braze, is heated in a soldering, or brazing, process, wherein the intermediate ring remains essentially solid during the soldering, or brazing, process. 116-. (canceled)17. A method for manufacturing a pressure sensor , comprising the steps of:providing a ceramic platform, a ceramic measuring membrane, and an intermediate ring;providing an active hard solder or braze material by means of gas phase deposition at least on a first surface section of a first surface and on a second surface section of a second surface; andheating the active hard solder, or braze, in a soldering, or brazing, process, wherein:the first surface is a platform surface, which is to be connected with the intermediate ring by means of the active hard solder, or braze, or a surface of the intermediate ring, which is to be connected with the platform by means of the active hard solder, or braze;the second surface is a measuring membrane surface, which is to be connected with the intermediate ring by means of the active hard ...

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Номер записи: 31
10-10-2013 дата публикации

Diaphragm Assembly for a Pressure Sensor, and a Pressure Sensor Provided with Such Assembly

Номер: US20130263678A1
Автор: Nicolaas Adrianus Johannes Bernardus Bontje, Reijer Wolting, Robert-Paul Bastiaan
Принадлежит: Badotherm Proces Instrumentatie BV

The present disclosure is related to diaphragm assembly for a pressure sensor, including a multi-layered assembly of an outer diaphragm and an inner diaphragm, and an intermediate layer between both diaphragms, the intermediate layer being made of a solid material which is permeable to air.

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Номер записи: 32
31-10-2013 дата публикации

UNIVERSAL PRESSURE TRANSDUCER MOUNTING DEVICE

Номер: US20130283921A1
Автор: Russell John, Taylor William J.
Принадлежит: ACIST MEDICAL SYSTEMS, INC.

A pressure transducer mounting device may include a support member and a pressure transducer holder. In use, the support member may attach to a support surface, such as a housing of a power injection device, while the pressure transducer holder is moveably connected to the support member. The pressure transducer holder may expand open to receive one of a plurality of different sized pressure transducers and bias closed to hold a received one of the plurality of different sized pressure transducers. In addition, the pressure transducer holder may move relative to the support member to one of a plurality of different vertically elevated positions. The pressure transducer mounting device may accommodate different pressure transducers, providing a universal mounting device that can adapt to different medical provider preferences and different pressure transducer sourcing options. 1. A pressure transducer mounting device comprising:a support member configured to attach to a support surface; anda pressure transducer holder moveably connected to the support member,wherein the pressure transducer holder is configured to expand open to receive one of a plurality of different sized pressure transducers and bias closed to hold a received one of the plurality of different sized pressure transducers, andwherein the pressure transducer holder is configured to move relative to the support member to one of a plurality of different vertically elevated positions.2. The pressure transducer mounting device of claim 1 , wherein the support surface is a housing of a power injection device.3. The pressure transducer mounting device of claim 1 , wherein the pressure transducer holder comprises a first arm and a second arm claim 1 , and the first arm is configured to move relative to the second arm to expand open to receive one of the plurality of different sized pressure transducers.4. The pressure transducer mounting device of claim 3 , wherein the pressure transducer holder further ...

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Номер записи: 33
31-10-2013 дата публикации

Pressure Monitoring Circuits and Methods

Номер: US20130289898A1
Автор: Thomas Lange, Thomas Lemense
Принадлежит: INFINEON TECHNOLOGIES AG

A pressure monitoring device comprises an analog-to-digital converter (ADC) to receive an analog signal and to convert the analog signal to a digital signal. The pressure monitoring device is configured to apply in a first state a first set of calibration coefficients to the digital signal, the first set of calibration coefficients being associated with a first pressure range. The pressure monitoring device is further configured to apply in a second state a second set of calibration values to the digital signal, the second set of calibration coefficients being associated with a second pressure range different than the first pressure range.

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Номер записи: 34
07-11-2013 дата публикации

Apparatus and Method for Comparing Gas Pressure Measurements

Номер: US20130297233A1
Автор: Juergensen Kevin W
Принадлежит:

A singular sealed apparatus and method suitable for confirming pressure measurements in a rebreather prior to use of the rebreather. The singular sealed apparatus may have a canister lid, gas sensors and a processor, all from a rebreather, as well as a pressure sensor, an input device, a processor, an indicator and a pod with a pressure measurement outlet, a gas supply inlet, a relief valve and a gas exit valve. Alternatively, the singular sealed apparatus may have a gas sensor from a rebreather and an analyzer, a pressure sensor, an input device, a processor, an indicator, a lid and a pod with a pressure measurement outlet, a gas supply inlet, a relief valve and a gas exit valve. The inventive method is characterized by assembling the singular sealed apparatus, inputting a concentration of a gas present in a gas mixture, admitting the gas mixture into the singular sealed apparatus, expelling ambient gas present in the singular sealed apparatus, measuring absolute pressure of the gas mixture, calculating partial pressure of the gas, indicating the calculated partial pressure of the gas, measuring partial pressure of the gas, indicating the measured partial pressure of the gas and comparing the calculated partial pressure of the gas to the measured partial pressure of the gas.

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Номер записи: 35
05-12-2013 дата публикации

METHOD FOR CONTROLLING A GAS TURBINE

Номер: US20130325370A1
Автор: Deuker Eberhard
Принадлежит:

A method for controlling a gas turbine, wherein measurement signal values are measured at different times, namely at least a first time and a second time, wherein the first time lies before the second time and wherein attenuated signal values are generated from the measurement signal values by smoothing the measured measurement signal values by means of a attenuation factor, wherein a different attenuation factor is used depending on the difference of the measurement signal value at the second time and the attenuated signal value at the first time. 13-. (canceled)4. A method for regulating a gas turbine , comprising:measuring a plurality of measurement signal values, a first measurement signal and a second measurement signal at different points in time, at at least a first point in time and a second point in time wherein the first point in time is located before the second point in time; andgenerating a plurality of attenuated signal values, a first attenuated signal and a second attenuated signal, from the plurality of measurement signal values, in that the measured measurement signal values undergo a smoothing with an attenuation factor,wherein depending on the difference between the second measurement signal value at the second point in time and the first attenuated signal value at the first point in time, a different attenuation factor is used for regulation, andwherein the smoothing is an exponential smoothing.5. The method for regulation according to claim 4 ,wherein the second attenuated signal value is formed from the sum of two products,wherein the first product is the multiplication of the attenuation factor the second measurement signal value measured at the second point in time, andwherein the second product is the multiplication of a differential value of one minus the attenuation factor and the first attenuated signal value at the first point in time.6. The method for regulation according to claim 4 ,wherein a higher attenuation factor is used when the ...

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Номер записи: 36
19-12-2013 дата публикации

Flange for pressure measurement cells or pressure transfer means and method for manufacture of such flanges

Номер: US20130333479A1
Автор: Christoph Bollig, Markus Berger, Volker Frey
Принадлежит: Endress and Hauser SE and Co KG

A flange for a corrosion resistant and nevertheless low cost flange for pressure measurement cells, or pressure transfer means, is composed essentially of a metal foundation of a standard material and is protected on the side facing a process medium by a there applied layer of a highly alloyed, special material.

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Номер записи: 37
19-12-2013 дата публикации

PRESSURE SENSOR AND SYSTEM FOR REGULATING A VENTILATION DEVICE

Номер: US20130338840A1
Автор: Loidreau Maxime, OERTEL Kai
Принадлежит: ROBERT BOSCH GMBH

A pressure sensor includes: a detection device for ascertaining air pressure and temperature; a computing unit; and a wireless interface. With the aid of the wireless interface, the pressure sensor data which represent a flow state in the surroundings of the pressure sensor are transferred wirelessly to a central control device. With the aid of the central control device, final control elements of a ventilation device are set. 1. A pressure sensor , comprising:a detection device for ascertaining air pressure and temperature;a computing unit; anda wireless interface.2. The pressure sensor as recited in claim 1 , wherein the computing unit is configured to executed an evaluation software to ascertain a flow situation in the surroundings of the pressure sensor.3. The pressure sensor as recited in claim 2 , wherein the pressure sensor is configured to detect operating states of a ventilation device.4. The pressure sensor as recited in claim 3 , wherein the wireless interface is configured to transfer data.5. The pressure sensor as recited in claim 4 , wherein the wireless interface is configured to exchange data with at least one of an (i) additional pressure sensor and (ii) a control device.6. The pressure sensor as recited in claim 5 , wherein the evaluation software is self-learning.7. A system for regulating a ventilation device claim 5 , comprising:at least one pressure sensor configured to detect an air flow, wherein the pressure sensor has a wireless interface; anda control device configured to receive transferred data of the pressure sensor via the wireless interface, wherein the control device is configured to control settings of elements of the ventilation device with the data of the pressure sensor.8. The system as recited in claim 7 , wherein the pressure sensor has an evaluation functionality regarding a flow situation in the surroundings of the pressure sensor claim 7 , and wherein evaluation data of the pressure sensor are utilized by the control device ...

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Номер записи: 38
26-12-2013 дата публикации

PRESSURE SENSOR HAVING A COMPRESSIBLE ELEMENT

Номер: US20130340532A1
Автор: Wohlgemuth Christian
Принадлежит: EPCOS AG

The invention relates to a pressure sensor () comprising a chamber () in which a sensor element () for measuring pressure is arranged. The pressure sensor () further comprises a compressible element () for overpressure protection, said compressible element () being arranged outside the chamber (). 1. A pressure sensor , comprising:a chamber in which a sensor element for measuring a pressure is arranged; anda compressible element for protecting against excess pressure,wherein the compressible element is arranged outside the chamber.2. The pressure sensor according to claim 1 , wherein the chamber is bounded by a pressure-sensitive region.3. The pressure sensor according to or further comprising:a pressure line, which is fillable with a fluid medium, for directing the pressure of the medium onto the pressure-sensitive region,wherein the compressible element is arranged on the pressure line.4. The pressure sensor according to claim 1 , wherein the pressure-sensitive region is in the form of a membrane.5. The pressure sensor according to claim 4 , wherein the membrane is a metallic membrane.6. The pressure sensor according to claim 1 , further comprising:a housing,wherein the pressure line extends in the housing.7. The pressure sensor according to claim 1 , wherein the housing has an inner wall which is lined with the compressible element.8. The pressure sensor according to claim 1 , wherein the pressure line leads through the compressible element.9. The pressure sensor according to claim 1 , wherein the pressure line extends vertically toward the pressure-sensitive region.10. The pressure sensor according to claim 1 , wherein the pressure line extends at an inclination angle toward the pressure-sensitive region.11. The pressure sensor according to claim 1 , wherein the pressure line has sections which have different diameters.12. The pressure sensor according to claim 11 , wherein the section having the smallest diameter is bounded by the compressible element.13. The ...

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Номер записи: 39
23-01-2014 дата публикации

Differential pressure/pressure transmitting device

Номер: US20140020472A1
Автор: Keisuke Kihara
Принадлежит: Azbil Corp

A differential pressure and pressure transmitting device includes a pressure detecting portion and a rupture state detecting portion. The pressure detecting portion includes a first diaphragm that receives indirectly a pressure of a process fluid and that transmits a pressure, a second diaphragm that receives directly a pressure of a process fluid, and an insulating fluid-filled portion positioned between the first and second diaphragms and filled with an insulating fluid, and provided with a pair of electrodes on a periphery thereof. The rupture state detecting portion applies an electropotential to the electrodes to measure the electrical conductivity of the insulating fluid and to monitor for a rupture of a diaphragm.

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Номер записи: 40
30-01-2014 дата публикации

Gas gun fixture to evaluate blast wave on target sample

Номер: US20140026669A1
Автор: Bartyczak Susan L., JR. Willis, Mock
Принадлежит: United States Government , as represented by the Secretary of the Navy

A test fixture is provided for mounting a sample to a gas gun. The fixture includes a gun barrel mount including an annular enclosure with first and second axial ends, and a sample platform. The mount connects to the gas gun at the first end. The sample platform includes a tubular component having third and fourth axial ends, a pusher disk, an end plate, and a flange. The disk supports the sample and mounts to the end plate. The flange removably attaches to the component at the third end. The end plate removably attaches to the component at the fourth end and to the enclosure at the second end. 1. A test fixture for mounting a sample to a gas gun , said fixture comprising:a gun muzzle mount including an annular enclosure with first and second axial ends, said mount connecting to the gas gun at said first end; anda sample platform including a tubular component having third and fourth axial ends, a pusher disk, an end plate, and a flange, wherein said disk supports the sample and mounts to said end plate, said flange removably attaches to said component at said third end, said end plate removably attaches to said component at said fourth end and to said enclosure at said second.2. The fixture according to claim 1 , wherein said mount further comprises:a first pressure gauge to measure dynamic internal pressure of said enclosure between said first and second ends; anda second pressure gauge to trigger recordation of measurements from said first pressure gauge.3. The fixture according to claim 2 , wherein said platform further comprises:a third pressure gauge to measure blast pressure adjacent the sample;4. The fixture according to claim 1 , wherein said platform further comprises:an accelerometer attaching to the sample, being disposed within a recess of said disk, and a stress gauge disposed on the sample.5. The fixture according to claim 1 , wherein said plate attaches to said disk by a plurality of threaded rods. The invention described was made in the performance ...

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Номер записи: 41
13-02-2014 дата публикации

Apparatus and Method for Eliminating Varying Pressure Fluctuations in a Pressure Transducer

Номер: US20140041457A1
Автор: Gardner Robert, KANE ADAM, KURTZ ANTHONY D., Martin Richard
Принадлежит: Kulite Semiconductor Products, Inc.

A differential pressure transducer employing a coiled tube to eliminate varying pressure fluctuations is provided. In one embodiment, a method comprises receiving, at an inlet tube of a dampening chamber, a main pressure, wherein the main pressure includes a static pressure component and a dynamic pressure component; filtering, by the inlet tube, at least a portion of the dynamic pressure component of the main pressure; outputting, from the inlet tube, a first filtered main pressure; receiving, at a volume cavity of the dampening chamber, the first filtered main pressure, wherein the volume cavity is operatively coupled to the inlet tube; filtering, by the volume cavity, at least a portion of the dynamic pressure component of the first filtered main pressure; outputting, from the volume cavity, a second filtered main pressure; and wherein the dampening chamber is tuned to a predetermined resonance frequency. 1. A method , comprising:receiving, at an inlet tube of a dampening chamber, a main pressure, wherein the main pressure includes a static pressure component and a dynamic pressure component;filtering, by the inlet tube, at least a portion of the dynamic pressure component of the main pressure;outputting, from the inlet tube, a first filtered main pressure;receiving, at a volume cavity of the dampening chamber, the first filtered main pressure, wherein the volume cavity is operatively coupled to the inlet tube;filtering, by the volume cavity, at least a portion of the dynamic pressure component of the first filtered main pressure;outputting, from the volume cavity, a second filtered main pressure; andwherein the dampening chamber is tuned to a predetermined resonance frequency.2. The method of claim 1 , further comprising:receiving, at a first surface of a diaphragm, a reference pressure;receiving, at a second surface of the diaphragm, the second filtered main pressure, wherein the second surface of the diaphragm is operatively coupled to the dampening chamber; ...

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Номер записи: 42
13-02-2014 дата публикации

GIS ENABLED PIPELINE UPGRADING SYSTEM

Номер: US20140046604A1
Автор: Andoji Kavitha, Faucherand Christophe, Mohan Vinoth Kumar
Принадлежит: GENERAL ELECTRIC COMPANY

Certain embodiments of the invention may include systems and methods for evaluating pipeline using GIS data. According to an example embodiment of the invention, a method is provided for evaluating pipeline using geographical information system (GIS) data. The method can include receiving component information from a GIS database for one or more components in a pipeline; determining a modified maximum allowable operating pressure (MAOPm) for the one or more components; determining an uprating pressure (MAOPm*) that the one or more components can withstand; and outputting a upgrade recommendation or an uprate recommendation based at least in part on the MAOPm and the MAOPm*. 1. A method for evaluating a pipeline using geographical information system (GIS) data , comprising:receiving component information from a GIS database for one or more components in a pipeline;determining a modified maximum allowable operating pressure (MAOPm) for the one or more components;determining an uprating pressure (MAOPm*) that the one or more components can withstand; andoutputting at least one of an upgrade recommendation or an uprate recommendation based at least in part on the MAOPm and the MAOPm*.220-. (canceled) This invention generally relates to pipelines, and in particular, to evaluating pipeline components using geographical information system (GIS) data.Natural gas suppliers typically utilize a network of pipelines to deliver fuel to the customer premises. Utilities and pipeline companies have realized that capacity may be increased and more customers may be served by increasing the pressure of the gas within the pipeline. However, the components associated with the pipeline (pipes, joints, valves, meters, etc.) are typically rated to withstand a certain maximum allowable operating pressure (MAOP), and therefore, the number of customers that can be served from a particular pipeline may be limited by the components with the lowest MAOP rating. In some instances, the components ...

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Номер записи: 43
10-04-2014 дата публикации

PRESSURE TRANSMITTER AND TRANSMISSION METHOD

Номер: US20140096613A1
Автор: BABA Atsushi, FUSHIMI Atsushi, HANAMI Hideki, Hara Isao, ITO Takashi, KUWANA Ryo, SHINMA Daisuke
Принадлежит: Hitachi, Ltd.

Hydrogen which has entered into a pressure/differential pressure transmitter from external or internally generated hydrogen and hydrocarbons are converted to air bubbles within pressure guide paths. As a result, the indicated value drifts and an accurate numerical value is not output. A pressure/differential pressure transmitter includes a space formed between a diaphragm and a main body side wall face, pressure guide paths connected to the main body side wall face, a sealed liquid sealed in the space and the pressure guide paths to transmit a pressure received by the diaphragm to a sensor, and a hydrogen absorption material provided at least in the sealed liquid, on the main body side wall face, or in a part of a path between the main body side wall face and the sensor to absorb hydrogen atoms in the sealed liquid. 1. A pressure/differential pressure transmitter comprising:a diaphragm;a pressure receiving chamber wall face;a space formed between the diaphragm and the pressure receiving chamber wall face;pressure guide paths connected to the pressure receiving chamber wall face;a sealed liquid sealed in the space and the pressure guide paths to transmit a pressure received by the diaphragm to a sensor; anda hydrogen absorption material provided at least in the sealed liquid, on the pressure receiving chamber wall face, or in a part of a path between the pressure receiving chamber wall face and the sensor to absorb hydrogen atoms in the sealed liquid.2. The pressure/differential pressure transmitter according to claim 1 , wherein hydrogen which has entered into the pressure/differential pressure transmitter from external or internally generated hydrogen atoms are absorbed by the hydrogen absorption material.3. The pressure/differential pressure transmitter according to claim 1 , wherein the hydrogen absorption material is palladium claim 1 , magnesium claim 1 , vanadium claim 1 , titanium claim 1 , manganese claim 1 , zirconium claim 1 , nickel claim 1 , niobium ...

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Номер записи: 44
07-01-2016 дата публикации

Determining Stresses in a Pipe Under Non-Uniform Exterior Loads

Номер: US20160003030A1
Автор: Mitchell Robert F
Принадлежит:

Systems and methods for determining stresses in pipe under non-uniform exterior loads to test the pipe design for structural integrity by approximating non-uniform exterior loads on the pipe and performing a stress analysis of the pipe under the non-uniform exterior loading to determine the stresses in the pipe. 1. A method for determining stresses in a pipe under non-uniform exterior loads , which comprises:a) determining coefficients in multiple stress equations for the pipe by solving boundary condition equations using a maximum lateral pressure on the pipe, a minimum lateral pressure on the pipe, an inside radius of the pipe and an outside radius of the pipe;b) solving two of the multiple stress equations that each represent a radial stress for the pipe, two of the multiple stress equations that each represent a hoop stress for the pipe, which are added together to represent a total radial stress and a total hoop stress, and one of the multiple stress equations that represents a total shear stress for the pipe using one or more of the coefficients, a predetermined pipe radius and a predetermined pipe angle; andc) calculating a stress intensity for the pipe using a computer processor, the total radial stress, the total hoop stress, the total shear stress and a predetermined total axial stress for the pipe.2. The method of claim 1 , wherein the predetermined pipe radius and the predetermined pipe angle are each within a respective predetermined range.3. The method of claim 2 , wherein the predetermined range for the predetermined pipe radius is greater than the inside radius of the pipe and is less than the outside radius of the Pipe.4. The method of claim 3 , wherein the predetermined range for the predetermined pipe angle is greater than zero and is less than π.5. The method of claim 4 , further comprising repeating steps b)-c) with another predetermined pipe radius and another predetermined pipe angle until a maximum stress intensity for the pipe is calculated. ...

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Номер записи: 45
05-01-2017 дата публикации

POLYMERIC REMOTE SEAL SYSTEM FOR SINGLE-USE CONTAINERS

Номер: US20170003183A1
Автор: Fadell Paul R., Price Joshua M., Schumacher Mark S., Sittler Fred C.
Принадлежит:

A polymeric remote seal system is provided for coupling a single-use container to a pressure measurement instrument. The polymeric remote seal system includes a process-side coupling, an instrument-side coupling and a fluidic coupling therebetween. The process-side coupling is configured to couple to the single-use container and is formed of a radiation sterilizable polymer. The process-side coupling has a process-side deflectable diaphragm that is configured to deflect in response to pressure within the single-use container. The instrument-side coupling is configured to couple to the pressure measurement instrument and is formed of a radiation sterilizable polymer. The instrument-side coupling is configured to fluidically convey fluid pressure to an isolation diaphragm of the pressure measurement instrument. Tubing fluidically couples the process-side coupling to the instrument-side coupling. 1. A polymeric remote seal system for coupling a single-use container to a pressure measurement instrument , the system comprising:a process-side coupling configured to couple to the single-use container, the process-side coupling being formed of a radiation sterilizable polymer and having a process-side deflectable diaphragm that is configured to deflect in response to pressure of the single-use container;an instrument-side coupling configured to couple to the pressure measurement instrument, the instrument-side coupling being formed of a radiation sterilizable polymer and being configured to fluidically convey fluid pressure to an isolation diaphragm of the pressure measurement instrument; andtubing fluidically coupling the process-side coupling to the instrument-side coupling.2. The polymeric remote seal system of claim 1 , wherein the process-side coupling is configured to couple to the single-use container.3. The polymeric remote seal system of claim 2 , wherein the process-side coupling includes a flange body coupleable to the single-use container claim 2 , wherein the ...

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Номер записи: 46
05-01-2017 дата публикации

ACTIVE DIAPHRAGM SEAL ASSEMBLY FOR PRESSURE MEASUREMENT

Номер: US20170003184A1
Автор: DEANE Jason, FILIPPI Giovanni, KALISCH Albrecht
Принадлежит: WIKA Alexander Wiegand SE & CO. KG

A fluid filled pressure measurement system having a pressure sensor or pressure gauge and a diaphragm seal to a process wherein the diaphragm seal is moveable by changing the volume behind the diaphragm seal by the volume member. In a first position the diaphragm seal is seated or is a parked position such that the diaphragm seal is fixed to avoid deformations during cleaning. 1. A pressure measurement system comprising:a pressure channel system fillable with a fluid;a pressure sensor or pressure gauge;a first diaphragm seal arranged between a process and a seat formed in or connected to a flange, a cavity being formed between the first diaphragm seal and the seat when the pressure measurement system is in an active operation; anda volume member adapted to push or suck fluid from the cavity towards the pressure channel system,wherein the diaphragm seal is moveable by displacing the fluid behind the diaphragm seal by the volume member.2. The pressure measurement system according to claim 1 , wherein the diaphragm seal is set in a shaped seat by the volume member to avoid deformations during cleaning.3. The pressure measurement system according to claim 1 , wherein the volume member is a second diaphragm which is drivable by pressure or vacuum.4. The pressure measurement system according to claim 1 , wherein a predetermined and/or optimized working position of the diaphragm seal is defined by a specified pressure claim 1 , force or a specified piston position from the volume member.5. A pressure measurement system comprising:a pressure channel system filled with a pressure fluid;a pressure sensor connected to the pressure channel system and providing a pressure measurement of a process in a process containment based on a pressure of the pressure fluid, the pressure channel system being connected to the process containment via a first channel;a first diaphragm seal arranged between the process and the first channel; anda second diaphragm seal arranged in a second ...

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Номер записи: 47
05-01-2017 дата публикации

DETECTOR UTILIZING AN ADJUSTMENT SCREW AND A BELLOWS

Номер: US20170003185A1
Автор: Frasure David, Wallace Steven
Принадлежит:

A detector that detects an alarm and/or fault condition with respect to a pressure of a medium is provided. The detector comprises a housing comprising an access tube configured to receive a medium and a bellows fixed to the housing comprising a cavity and a first contact surface. The detector also comprises an adjustment screw positioned within the cavity of the bellows, coupled to the housing via an insulation member, and comprising a second contact surface. The detector is further configured to detect a change in pressure of the medium based on whether the first contact surface and the first contact surface are in electrical communication. 1. A detector , comprising:a housing comprising an access tube configured to receive a medium;a bellows fixed to the housing comprising a cavity and a first contact surface;an adjustment screw positioned within the cavity of the bellows, coupled to the housing via an insulation member, and comprising a second contact surface,wherein the detector is configured to detect a change in pressure of the medium based on whether the first contact surface and the first contact surface are in electrical communication.2. The detector of claim 1 , wherein the bellows is configured to compress when the change in pressure is an increase in pressure of the medium.3. The detector of claim 1 , wherein the bellows is configured to expand when the change in pressure is a decrease in pressure of the medium.4. The detector of claim 1 , wherein a depth of penetration of the adjustment screw within the cavity is configured to be adjusted by rotating the adjustment screw.5. The detector of claim 1 , wherein the detector is an alarm detector configured to trigger when the first contact surface and the first contact surface are in electrical communication.6. The detector of claim 1 , wherein the detector is a fault detector configured to trigger when the first contact surface and the first contact surface are not in electrical communication.7. The ...

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Номер записи: 48
08-01-2015 дата публикации

Panel with Strain Gauges for Measuring Deformation Information

Номер: US20150007664A1
Автор: DIRAUF Franz, Farmbauer Kerstin
Принадлежит:

A panel includes a plurality of integrated strain gauges for measuring deformation information relating to the panel. The strain gauges are arranged parallel to one another in the longitudinal direction of the panel and have at least two different lengths. 1. A panel comprises:a plurality of integrated strain gauges for measuring deformation information relating to the panel, wherein the strain gauges are arranged parallel to one another in a longitudinal direction of the panel, and wherein the strain gauges have at least two different lengths.2. The panel of claim 1 , wherein pairs of the plurality of strain gauges extend symmetrically in the longitudinal direction with respect to a centerline of the panel claim 1 , and wherein the strain gauges of each pair have a respective claim 1 , equal strain gauge length of a plurality of different strain gauge lengths.3. The panel of claim 2 , wherein the lengths of the plurality of strain gauges increase with decreasing distance from the centerline.4. The panel of claim 2 , wherein the pairs of strain gauges provide all strain gauge lengths of the plurality of different strain gauge lengths claim 2 , or wherein one length of the plurality of different strain gauge lengths is provided by one strain gauge of the plurality of strain gauges arranged on the centerline and the pairs of strain gauges provide all of the other strain gauge lengths of the plurality of strain gauge lengths.5. The panel of claim 1 , wherein each strain gauge of the plurality of strain gauges comprises connection elements configured to measure electric resistance of the respective strain gauge and arranged at ends of the respective strain gauge.6. The panel of claim 1 , wherein the panel is a couch panel for supporting a patient.7. A device for determining deformation information for a panel to which a load is applied claim 1 , the device comprising:a plurality of integrated strain gauges for measuring deformation information relating to the panel, ...

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Номер записи: 49
08-01-2015 дата публикации

SMART SEAT MONITORING SYSTEM

Номер: US20150008710A1
Автор: Hewitt Carl, Luckow Al, Young Steven J.
Принадлежит:

A seat monitoring system comprises a first layer of one or more fluid bladders packaged within a seat, a pump in fluid communication with the first layer, the pump operable to increase fluid pressure of each bladder within the first layer, an array of one or more sensors in fluid communication with the first layer and operative to sense pressure and pressure changes within each bladder within the first layer and a controller configured to: collect pressure data; determine from the pressure data a monitored parameter relevant to a subject in the seat; and change an aspect of the seat based on the monitored parameter. Methods of using the seat monitoring system can include determining a drowsiness threshold and altering a user that he or she is getting drowsy. 1. A seat monitoring system comprising:a first layer of one or more fluid bladders packaged within a seat;a pump in fluid communication with the first layer, the pump operable to increase fluid pressure of each bladder within the first layer;an array of one or more sensors in fluid communication with the first layer and operative to sense pressure and pressure changes within each bladder within the first layer; and collect pressure data;', 'determine from the pressure data a monitored parameter relevant to a subject in the seat; and', 'change an aspect of the seat based on the monitored parameter., 'a controller configured to2. The seat monitoring system of further comprising:an array of one or more actuators for controlling the first layer and configured to communicate with the controller and the pump;wherein the array of one or more actuators and the pump receive commands from the controller based on the monitored parameter to increase or decrease fluid pressure in one or more bladders within the first layer.3. The seat monitoring system of claim 1 , wherein the monitored parameter is at least one vital sign including the subject's heart rate and the subject's respiration rate4. The seat monitoring system of ...

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Номер записи: 50
12-01-2017 дата публикации

Pressure sensor and manufacturing method therefor

Номер: US20170010164A1
Автор: Dongbiao QIAN
Принадлежит: CSMC Technologies Fab1 Co Ltd

A pressure sensor ( 10 ) comprising: a detection film ( 200 ) which is arranged on a silicon substrate ( 100 ) and is used for detecting a pressure which is applied to the surface of the detection film and generating a bulge deformation which adapts to the size of the pressure; an optical transmitter ( 300 ) and an optical detector ( 400 ) which are arranged on the silicon substrate ( 100 ), are located on a plane which is parallel to a plane where the detection film ( 200 ) is located, and are oppositely arranged at two sides of the detection film ( 200 ); and a pressure calculation module which is connected to the optical detector ( 400 ) and is used for acquiring detected light intensity data, and calculating a pressure value according to the light intensity data.

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Номер записи: 51
10-01-2019 дата публикации

Connection adapter as a test port, including shutoff device

Номер: US20190011059A1
Автор: Alexander HEIN, Arthur BOETTCHER, Carmen LIPPERT
Принадлежит: WIKA Alexander Wiegand SE and Co KG

A connection adapter for connecting a process chamber to a measuring system, in particular to a pressure, density or temperature measuring system, which includes at least three ports, having a process port, the process port being connected or connectable to the process chamber, a measuring port, the measuring system being connected or connectable to the measuring port, and an access port, which includes a self-sealing coupling. The connection adapter, furthermore includes a line system, having lines and at least one closable shutoff device. The line system connecting the process port to the measuring port and the access port, the connection between the process port and the measuring port being blockable gas-tight with the aid of the shutoff device, and the access port being connected or connectable to the measuring port via the line system. A measuring apparatus having a connection adapter is also provided.

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Номер записи: 52
14-01-2021 дата публикации

Capacitive Pressure Sensor, Manufacturing Method Thereof, and Capacitive Pressure Sensor Device

Номер: US20210010886A1
Автор: Han Hyo Seung, Jang Suk Hyung
Принадлежит:

A capacitive pressure sensor includes a flexible substrate, a first electrode and a second electrode disposed on one surface of the flexible substrate so as to be spaced apart from each other and located to face each other when the flexible substrate is folded, a dielectric layer interposed between the first electrode and the second electrode, and a signal processing unit disposed on one surface of the flexible substrate and converting a capacitance, which changes as a thickness of the dielectric layer changes by external pressure in a state in which the flexible substrate is folded, into an electrical signal.

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Номер записи: 53
15-01-2015 дата публикации

Method of Monitoring Wear in a Diaphragm Valve Using Pressure Detection

Номер: US20150013432A1
Автор: Shawn D. Bush
Принадлежит: SDB IP Holdings LLC

A system for detecting wear in a flush valve includes at least one pressure sensor adapted to measure a water pressure within the flush valve and at least one microprocessor in communication with the at least one pressure sensor. The at least one microprocessor is configured to determine the water pressure within the flush valve measured by the at least one pressure sensor at or after a predetermined time following operation of the flush valve that is equal to or exceeding a known time required to reseal the flush valve during normal operation, compare the determined water pressure with a pressure value sufficient to reseal the flush valve during normal operation, and determine if the flush valve is worn based at least partially on the comparison. A method and apparatus is also disclosed.

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Номер записи: 54
17-04-2014 дата публикации

PRESSURE MEASUREMENT DEVICE AND LIQUID TREATMENT DEVICE

Номер: US20140102206A1
Автор: OSHIMA Atsushi
Принадлежит: SEIKO EPSON CORPORATION

A pressure measurement device adapted to measure a pressure of a liquid includes a flow channel having a flow channel resistance, a liquid containing chamber having a predetermined capacity and communicating with the flow channel, a pressure changing section adapted to change a pressure of the liquid containing chamber, a measurement section adapted to measure a period from when a pressure wave of the liquid in the liquid containing chamber becomes a predetermined value to next time the pressure wave becomes the predetermined value, the pressure wave occurring when the pressure changing section is in operation in a state in which the liquid is contained in the flow channel and the liquid containing chamber, and an acquisition section adapted to obtain the pressure based on the period measured by the measurement section. 1. A pressure measurement device adapted to measure a pressure of a liquid , comprising:a flow channel having a flow channel resistance;a liquid containing chamber having a predetermined capacity and communicating with the flow channel;a pressure changing section adapted to change a pressure of the liquid containing chamber;a measurement section adapted to measure a period from when a pressure wave of the liquid in the liquid containing chamber becomes a predetermined value to next time the pressure wave becomes the predetermined value, the pressure wave occurring when the pressure changing section is in operation in a state in which the liquid is contained in the flow channel and the liquid containing chamber; andan acquisition section adapted to obtain the pressure of the liquid based on the period measured by the measurement section.2. The pressure measurement device according to claim 1 , whereinthe pressure changing section includes a piezoelectric element, and changes the pressure of the liquid containing chamber due to a force caused by a distortion of the piezoelectric element.3. The pressure measurement device according to claim 2 , ...

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Номер записи: 55
17-04-2014 дата публикации

TORQUE INSENSITIVE HEADER ASSEMBLY

Номер: US20140102207A1
Автор: Kochman Boaz, KURTZ ANTHONY D.
Принадлежит: Kulite Semiconductor Products, Inc.

This disclosure provides example methods, devices and systems associated with a torque-insensitive header assembly. In one embodiment, a method comprises receiving, by a sensor, from an aperture defined by a shell, an environmental condition, wherein the sensor is coupled to a header and the header is coupled to the shell such that the sensor is isolated from a torque stress applied to the shell; measuring, by the sensor, the environmental condition to determine an environmental condition signal; and outputting, from the sensor, the environmental condition signal. 1. A method , comprising:receiving, by a sensor, from an aperture defined by a shell, an environmental condition, wherein the sensor is disposed at a header and the header is coupled to the shell such that the sensor is isolated from a torque stress applied to the shell;measuring, by the sensor, the environmental condition to determine an environmental condition signal; andoutputting, from the sensor, the environmental condition signal.2. The method of claim 1 , further comprising:positioning the shell at an opening having side walls and a back wall; andapplying a torque stress to the shell to couple the shell to the side walls of the opening such that a seal is formed between a front surface of the shell and the back wall of the opening.3. The method of claim 1 , wherein a back portion of the header is coupled to a back portion of the shell.4. The method of claim 1 , wherein the sensor is disposed at a front portion of the header.5. The method of claim 1 , wherein the first aperture is proximate a front side of the sensor.6. The method of claim 1 , wherein the sensor includes a sensor array.7. The method of claim 6 , wherein the sensor array is a Wheatstone Bridge.8. The method of claim 1 , wherein the environmental condition is pressure.9. The method of claim 1 , wherein the environmental condition is temperature.10. The method of claim 1 , wherein the shell is disposed around a front portion of the ...

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Номер записи: 56
16-01-2020 дата публикации

PROCESS DIAPHRAGM SEAL

Номер: US20200018660A1
Автор: LI Baogang
Принадлежит: Rosemount Inc.

A process diaphragm seal includes a seal body, a diaphragm, and a ring member. The seal body includes a flange that surrounds a cavity. The diaphragm includes an active portion that extends over the cavity and a peripheral portion that surrounds the active portion. The ring member clamps the peripheral portion of the diaphragm to an outer wall of the flange through an interference fit between an inner wall of the ring member and the outer wall of the flange. A seal is formed between the peripheral portion of the diaphragm and the outer wall of the flange. 1. A process diaphragm seal comprising:a seal body including a flange surrounding a cavity;a diaphragm having an active portion extending over the cavity and a peripheral portion surrounding the active portion; anda ring member clamping the peripheral portion of the diaphragm to an outer wall of the flange through an interference fit between an inner wall of the ring member and the outer wall of the flange, wherein a seal is formed between the peripheral portion of the diaphragm and the outer wall of the flange.2. The process diaphragm seal of claim 1 , wherein:the active portion of the diaphragm extends substantially perpendicularly to a central axis;the peripheral portion of the diaphragm extends substantially parallel to the central axis; andthe outer wall of the flange and the inner wall of the ring member extend substantially parallel to the central axis.3. The process diaphragm seal of claim 2 , wherein the outer wall of the flange and the inner wall of the ring member are cylindrical.4. The process diaphragm seal of claim 2 , wherein the interference fit pinches the peripheral portion of the diaphragm against the outer wall of the flange.5. The process diaphragm seal of claim 4 , wherein:the outer wall of the flange includes at least one protrusion extending substantially perpendicularly to the central axis; andthe interference fit deforms the peripheral portion of the diaphragm about the at least one ...

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Номер записи: 57
28-01-2016 дата публикации

Universal pressure transducer mounting device

Номер: US20160022217A1
Автор: John Russell, William J. Taylor
Принадлежит: ACIST Medical Systems Inc

A pressure transducer mounting device may include a support member and a pressure transducer holder. In use, the support member may attach to a support surface, such as a housing of a power injection device, while the pressure transducer holder is moveably connected to the support member. The pressure transducer holder may expand open to receive one of a plurality of different sized pressure transducers and bias closed to hold a received one of the plurality of different sized pressure transducers. In addition, the pressure transducer holder may move relative to the support member to one of a plurality of different vertically elevated positions. The pressure transducer mounting device may accommodate different pressure transducers, providing a universal mounting device that can adapt to different medical provider preferences and different pressure transducer sourcing options.

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Номер записи: 58
28-01-2016 дата публикации

METHOD OF CONTROLLING A PRESSURIZED MATTRESS SYSTEM FOR A SUPPORT STRUCTURE

Номер: US20160022519A1
Автор: Doehler Steven J., Labedz Christopher D., Price James H., Rajewski Robert J., Soltani Sohrab
Принадлежит: American Sterilizer Company

A method for automatically varying the internal air pressure in at least one inflatable air bladder associated with at least one zone of a pressurized mattress system to achieve an optimal zone air pressure for a patient. The method includes a step of incrementally decreasing the zone air pressure of the at least one zone until more than a predetermined percentage or portion of the patient is directly supported by a substrate disposed below the at least one inflatable air bladder. The method then determines the appropriate increase in zone air pressure to achieve the optimal zone air pressure for the patient. 1. A method for controlling a pressurized mattress system , said pressurized mattress system having an upper surface for receiving a patient thereon , said pressurized mattress system including:at least one zone having at least one inflatable air bladder,a substrate disposed below said at least one inflatable air bladder,a pressure sensor for measuring a zone air pressure of said at least one zone,a plurality of interface pressure sensors disposed on an upper surface of said at least one inflatable air bladder, each of said plurality of interface pressure sensors measuring an interface pressure at a discrete location along said upper surface of said at least one inflatable air bladder,a source of pressurized air, anda controller for receiving signals from said pressure sensor and said plurality of interface pressure sensors and for controlling the flow of pressurized air to/from said at least one inflatable air bladder based on said signals, wherein said controller calculates a zone interface pressure for said at least one zone based on said signals from said plurality of interface pressure sensors, a) inflating said at least one inflatable air bladder to an initial zone air pressure;', 'b) reducing the zone air pressure by a predetermined first value and calculating a zone interface pressure;', 'c) repeating step b) until the zone interface pressure meets a ...

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Номер записи: 59
22-01-2015 дата публикации

INDUSTRIAL ON-DEMAND EXHAUST VENTILATION SYSTEM WITH CLOSED-LOOP REGULATION OF DUCT AIR VELOCITIES

Номер: US20150024672A1
Автор: Litomisky Ales
Принадлежит: Ecogate, Inc.

A closed-loop regulation method of a ventilation system using a control computer. The method includes the steps comprising: providing a ventilation system with a control computer, an exhaust fan, sensors, and gates; using the sensors to determine actual air velocities within the ventilation system; providing minimum air velocities that must be maintained throughout the ventilation system; monitoring the one or more air velocities; and maintaining by the control computer that the actual air velocities are above the one or more minimum air velocities. Preferably, the ventilation system includes a control computer that takes the measurements, makes the air flow calculations, and automatically adjusts the gates and fans to ensure that a minimum air velocity is kept in all parts of the ducts of the system. Preferably, the ventilation system is energy efficient by optimizing the air flow and lowering the amount of energy needed to run the system. 1. A closed-loop regulation method of a ventilation system using a control computer , the steps comprising:providing a ventilation system;wherein said ventilation system is comprised of: at least one duct, at least one motorized exhaust fan, one or more gates; one or more workstations; a control computer, and one or more sensors;wherein each of said one or more workstations has at least one of said one or more gates;wherein said control computer is configured to open and close said one or more gates;wherein said control computer is configured to adjust a speed of said motorized exhaust fan;using said one or more sensors to determine one or more actual air velocities within said ventilation system;providing one or more minimum air velocities that must be maintained throughout said ventilation system;monitoring by said control computer said one or more air velocities; andmaintaining by said control computer that said one or more actual air velocities are above said one or more minimum air velocities.2. The closed-loop regulation ...

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Номер записи: 60
25-01-2018 дата публикации

PHOTOELASTIC POLYURETHANE RESIN, DETECTION MEMBER, ROBOT, AND METHOD FOR PRODUCING PHOTOELASTIC POLYURETHANE RESIN

Номер: US20180022861A1
Автор: MITSUZUKA Masahiko, Tajitsu Yoshiro, Yamasaki Satoshi
Принадлежит:

The photoelastic polyurethane resin has a Young's modulus at 25° C. of 2 to 5 MPa, a photoelastic constant at 25° C. of 1000×10Pato 100000×10Pa, and a glass transition temperature of −60° C. to −21° C. 1. Photoelastic polyurethane resin havinga Young's modulus at 25° C. of 2 to 5 MPa,{'sup': −12', '−1', '−12', '−1, 'a photoelastic constant at 25° C. of 1000×10Pato 100000×10Pa, and'}a glass transition temperature of −60° C. to −21° C.2. The photoelastic polyurethane resin according to claim 1 , wherein the glass transition temperature is −60° C. to −25° C.3. A detection member comprising:{'claim-ref': {'@idref': 'CLM-00001', 'claim 1'}, 'the photoelastic polyurethane resin according to ,'}a light generating member disposed at a first position at which light can be allowed to enter the photoelastic polyurethane resin, anda light receiving member disposed at a second position that is different from the first position and at which the light that is allowed to exit from the light generating member and passed through the photoelastic polyurethane resin can be received.4. The detection member according to claim 3 , wherein the photoelastic polyurethane resin is in a sheet shape.5. The detection member according to claim 3 , wherein the photoelastic polyurethane resin is in a bar shape.6. The detection member according to claim 3 , wherein the detection member detects a pressure applied to the photoelastic polyurethane resin.7. The detection member according to claim 3 , wherein the detection member detects bending of the photoelastic polyurethane resin.8. The detection member according to claim 3 , further comprising a cushioning material laminated on the photoelastic polyurethane resin.9. A robot comprising the detection member according to .10. A robot comprising:{'claim-ref': {'@idref': 'CLM-00006', 'claim 6'}, 'the detection member according to , and'}a processor that measures a pressure applied to the detection member based on the detection of the detection member.11. ...

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Номер записи: 61
22-01-2015 дата публикации

MONITORING THE CHANGE IN HEIGHT OF A DEVICE USING AN AIR PRESSURE SENSOR

Номер: US20150025817A1
Автор: Ten Kate Warner Rudolph Theophile
Принадлежит: KONINKLIJKE PHILIPS N.V.

There is provided a method of monitoring a change in height of a device, the device comprising a sensor for measuring the air pressure at the device, the method comprising determining a pressure change threshold from a pre-determined height change and an estimate or measurement of air pressure; obtaining a plurality of measurements of the air pressure at the device; determining a change in the air pressure from two or more of the measurements; and determining if the height of the device has changed by more than the pre-determined height change using the determined change in the air pressure and the determined pressure change threshold. 1. A method of monitoring a change in height of a device , the device comprising a sensor for measuring the air pressure at the device , the method comprising:determining a pressure change threshold from a predetermined height change and an estimate of air pressure or a measurement of air pressure at the device;obtaining a plurality of measurements of the air pressure at the device;determining a change in the air pressure from two or more of the plurality of measurements; anddetermining if the height of the device has changed by more than the predetermined height change using the determined change in the air pressure and the determined pressure change threshold.2. A method as claimed in claim 1 , wherein the step of determining the pressure change threshold comprises determining the pressure change threshold from the predetermined height change and an estimate of air pressure at a predetermined altitude.3. A method as claimed in claim 1 , wherein the step of determining the pressure change threshold comprises determining a pressure change threshold from the predetermined height change and at least one measurement of the air pressure at the device.4. A method as claimed in claim 1 , wherein the step of determining a pressure change threshold is repeated using at least one new measurement of the air pressure at the device.6. A method as ...

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Номер записи: 62
28-01-2021 дата публикации

MANOMETER

Номер: US20210025773A1
Автор: IMHOF PHILIPPE, Wang Zhixin, ZIPS Alf
Принадлежит: BAUMER BOURDON-HAENNI SA

The invention relates to a pressure gauge for measuring the pressure of a fluid, the pressure gauge being designed for a pressure range with a maximum pressure, with: a housing with a housing wall which is filled with a filling fluid; a pressure connection located in the housing wall; a tubular spring located in the housing and connected to the pressure connection, whereby a fluid can flow through the pressure connection into the tubular spring, whereby the tubular spring is designed to expand in the direction of the housing wall when pressure is applied by the fluid, thereby mechanically acting on an indicator to indicate the pressure of the fluid; and at least one volume reduction element which is at least partially located in the housing between the tubular spring and the housing wall in the direction of expansion of the tubular spring, whereby the at least one volume reduction element is an injection-molded plastic part. 1. Pressure gauge for measuring the pressure of a fluid , said pressure gauge being designed for a pressure range with a maximum pressure , with:one housing with a housing wall which is filled with a filling fluid;a pressure connection located in the housing wall;a tubular spring located in the housing and connected to the pressure connection, whereby a fluid can flow through the pressure connection into the tubular spring, the tubular spring being designed to expand in the direction of the housing wall when pressure is applied by the fluid, thereby mechanically acting on an indicator to indicate the pressure of the fluid; andat least one volume reduction element which is located in the housing at least partially between the tubular spring and the housing wall in the direction of expansion of the tubular spring, whereby the at least one volume reduction element is an injection-molded plastic part.2. Pressure gauge in accordance with claim 1 , whereby the material of the volume reduction element is polypropylene (PP).3200. Pressure gauge () in ...

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Номер записи: 63
29-01-2015 дата публикации

WIDE-RANGE PRECISION CONSTANT VOLUME GAS THERMOMETER

Номер: US20150030054A1
Автор: WILLING Bert
Принадлежит:

A Constant Volume Gas Thermometer (CVTG) device for measuring the temperature with high precision over a wide temperature range comprises a pressure measurement device, which comprises a mechanical assembly forming a membrane. The capillary tube communicates with the bottom side of the membrane and a first pressure measurement element on the membrane generates a signal in dependence of a deformation of the membrane. Further, the CVTG comprises electronic means for reading and correlating the signal of said first pressure measurement element to the temperature of the gas cartridge. The gas volume inside the pressure measurement device is minimized by careful design and tight tolerances. To measure pressures below 0.1 MPa inside the CVGT with sufficient accuracy, the CVGT include a second pressure measurement device which is based on the Pirani measurement principle. A Pirani measurement device measures the thermal conductivity of the surrounding gas. To this end, a thermally insulated wire or surface is heated electrically to a defined temperature, while the surrounding gas is at ambient temperature. If the thermal conductivity of the surrounding gas changes, either the Pirani element's temperature changes, or the electrical heating power needs to be adapted in order to maintain the Pirani element's temperature. 1. A Constant Volume Gas Thermometer (CVGT)comprising a gas cartridge , a pressure measurement device , and a capillary tube , which connects the gas cartridge to the pressure measurement device , wherein the pressure measurement device comprises a mechanical assembly forming a membrane wherein the capillary tube communicates with the bottom side of the membrane , a pressure measurement element on the membrane generating a signal in dependence of a deformation of the membrane , and electronic means for correlating the signal of said pressure measurement element to the temperature of the gas cartridge.2. The thermometer according to claim 1 , wherein the ...

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Номер записи: 64
23-01-2020 дата публикации

Detection Apparatus Usable In A Nuclear Reactor, and Associated Method

Номер: US20200027598A1
Автор: Abel II John R., Arndt Jeffrey L., Carvajal Jorge V., Heagy Melissa M., Stafford Shawn C., TATLI Emre
Принадлежит: WESTINGHOUSE ELECTRIC COMPANY LLC

A detection apparatus includes a resonant electrical circuit supported within an interior of a nuclear fuel rod generates a response pulse in response to an excitation pulse and transmits the response pulse through a cladding of the fuel rod to another location within a reactor in which the fuel rod is housed and without any breach in the cladding. A characteristic of the response pulse is indicative of a condition of the fuel rod. The detection apparatus also includes a transmitter positioned outside the cladding, in the reactor, in the vicinity of the fuel rod and configured to generate the excitation pulse and transmit the excitation pulse through the cladding to the resonant electrical circuit. A receiver is supported within the reactor outside of the cladding and, in response to the response pulse, communicates a signal to an electronic processing apparatus outside of the reactor. 1. A detection apparatus usable with a fuel rod from among a plurality of fuel rods of a fuel assembly , the fuel rod having a cladding that has an interior region , the fuel rod being situated within a nuclear reactor , the detection apparatus being cooperable with an electronic processing apparatus situated outside of the reactor , the detection apparatus comprising:a transmitter that is structured to be positioned outside the cladding and inside the nuclear reactor in the vicinity of the fuel rod and structured to generate an excitation pulse and to transmit the excitation pulse through the cladding and into the interior region;an electrical circuit apparatus having a resonant electrical circuit that is structured to be supported within the interior region and to generate a response pulse in response to the excitation pulse and to transmit the response pulse in the form of a magnetic field signal that is structured to travel from the interior region and through the cladding;the resonant electrical circuit comprising a plurality of circuit components, at least one circuit component ...

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Номер записи: 65
04-02-2016 дата публикации

PHYSICAL QUANTITY SENSOR, PRESSURE SENSOR, ALTIMETER, ELECTRONIC DEVICE, AND MOVING OBJECT

Номер: US20160033347A1
Автор: HAYASHI Kazuya
Принадлежит:

A physical quantity sensor includes a substrate that includes a recessed portion which is open on one face of the substrate, a diaphragm portion that includes a bottom portion of the recessed portion and is flexibly deformed by receiving pressure, a piezoresistive element that is arranged in the diaphragm portion, and a stepped portion that is arranged along the periphery of the diaphragm portion on the other face of the substrate and protrudes from the diaphragm portion in the thickness direction of the diaphragm portion by a height which is smaller than the depth of the recessed portion. 1. A physical quantity sensor comprising:a substrate that includes a recess on a first side of the substrate;a diaphragm that forms a bottom of the recess and is flexibly deformed by variations in atmospheric pressure;a sensor operatively associated with the diaphragm; anda step along a periphery of the diaphragm in plan view on a second side of the substrate,the step protruding relative to the diaphragm by an amount that is less than a depth of the recess.2. The physical quantity sensor according to claim 1 ,wherein a surface of the diaphragm on the first side of the substrate is a pressure receiving face.3. The physical quantity sensor according to claim 1 ,wherein the sensor is offset toward the second side of the substrate relative to the diaphragm.4. The physical quantity sensor according to claim 3 ,wherein the sensor is positioned laterally closer to the step than to a center of the diaphragm.5. The physical quantity sensor according to claim 1 ,wherein the step is a separate layer from the substrate.6. The physical quantity sensor according to claim 1 ,wherein the separate layer includes polycrystalline silicon.7. The physical quantity sensor according to claim 5 , further comprising:a pressure reference chamber on the second side of the substrate.8. The physical quantity sensor according to claim 7 ,wherein a side wall of the pressure reference chamber is immediately ...

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Номер записи: 66
04-02-2016 дата публикации

Pressure sensor having cap-defined membrane

Номер: US20160033349A1
Автор: Omar Abed
Принадлежит: Silicon Microstructures Inc

Structures and methods of protecting membranes on pressure sensors. One example may provide a pressure sensor having a backside cavity defining a frame and under a membrane formed in a device layer. The pressure sensor may further include a cap joined to the device layer by a bonding layer. A recess for a reference cavity may be formed in one or more of the cap, bonding layer, and membrane or other device layer portion. The recess may have a width that is narrower than a width of the backside cavity in at least one direction. In other examples, the recess may be shaped such that it has an outer edge that is within an outer edge of the backside cavity. This may reinforce a junction of the device layer and frame. The recess may define an active membrane spaced away from the device layer and backside cavity junction.

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Номер записи: 67
01-02-2018 дата публикации

AMORPHOUS QUARTZ PRESSURE TRANSDUCER

Номер: US20180031432A1
Автор: Brown Timothy Byron, Solis Eric Lane
Принадлежит:

A pressure transducer comprising a flexible member made of amorphous quartz and a crystalline quartz sensor are coupled together without an adhesive material. Instead, the amorphous quartz and the crystalline quartz sensor are coupled together at the molecular level. In some embodiments, the crystalline quartz sensor remains in compression or tension during the entire operating range of the pressure transducer. In one embodiment, the crystalline quartz sensor is pre-stressed in either compression or tension when the pressure transducer is exposed to atmospheric pressure. In one embodiment, pressure transducer is located in pressure stabilizing system. 1. A pressure transducer comprising:a Bourdon tube mechanism of amorphous quartz having a tube with a closed end and an open end, the open end of the tube being configured to be placed in fluid communication with a fluid and to receive the fluid into the tube, the closed end of the tube being configured to flex in response to a change in pressure in the tube;a support structure of amorphous quartz coupled to the Bourdon tube mechanism without an adhesive material; anda crystalline quartz sensor coupled between the closed end of the tube and the support structure, wherein the crystalline quartz sensor is in tension or compression for the operating range of the pressure transducer.2. The pressure transducer of claim 1 , wherein the crystalline quartz sensor is coupled between the closed end of the tube and the support structure without an adhesive material.3. The pressure transducer of claim 2 , further comprising one or more filaments claim 2 , each filament coupled to an end of the crystalline quartz sensor claim 2 , the filament having a dimension that is 0.5% to 15% less than a dimension of the tube.4. The pressure transducer of claim 3 , wherein the filament is made of amorphous quartz.5. The pressure transducer of claim 1 , wherein the support structure includes a channel that has a first end that is in fluid ...

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Номер записи: 68
05-02-2015 дата публикации

Method for producing a pressure sensor and corresponding sensor

Номер: US20150033878A1
Автор: Jean-Francois Le Neal, Sebastiano Brida
Принадлежит: CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE CNRS

The invention relates to a method for producing a pressure sensor, comprising the following steps: assembling a support substrate with a deformable membrane on which strain gauges have been deposited, wherein the deformable membrane comprises a thinned area at the centre thereof, the support substrate is disposed on top of the deformable membrane, the support substrate comprises an upper surface and a lower surface in contact with the deformable membrane, and the support substrate also comprises lateral recesses arranged on top of the strain gauges and a central recess arranged on top of the thinned area of the membrane, so as to obtain a micromechanical structure; and, once the assembly has been obtained, depositing, in a single step, at least one conductive material on the upper surface of the support and in the lateral recesses of the support, said conductive material extending into the recesses in order to be in contact with the strain gauges so as to form electrical contacts in contact with the strain gauges.

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Номер записи: 69
17-02-2022 дата публикации

System and Method For Measuring Pressure of Fluid Flow

Номер: US20220049999A1
Автор: LEI Ming, Murphy Matthew
Принадлежит:

An apparatus for measuring pressure within a fluid path includes a housing defining the structure of the apparatus. The housing includes a fluid path that extends through the housing and allows a fluid to pass through the housing. The apparatus also includes a first volume chamber that is in fluid communication with the fluid path and has a first volume chamber opening, and a second volume chamber with a second volume chamber opening that is less than the first volume chamber opening. A diaphragm separates the first volume chamber from the second volume chamber and fluidly disconnects the second volume chamber from the fluid path. The diaphragm deforms based upon the pressure within the fluid path. The apparatus also includes an interface that is connectable to a pressure sensor, and the second volume chamber is in fluid communication with the interface. 1. An apparatus for measuring pressure within a fluid path , the apparatus comprising:a housing defining the structure of the apparatus and having a fluid path at least partially extending through the housing, the fluid path configured to allow a fluid to pass through the housing;a first volume chamber in fluid communication with the fluid path and having a first volume chamber opening;a second volume chamber having a second volume chamber opening, the second volume chamber opening being smaller than the first volume chamber opening;a diaphragm separating the first volume chamber from the second volume chamber and fluidly disconnecting the second volume chamber from the fluid path, the diaphragm configured to deform based upon the pressure within the fluid path; andan interface connectable to a pressure sensor, the second volume chamber in fluid communication with the interface.2. An apparatus according to claim 1 , wherein the housing includes a first portion and a second portion claim 1 , the first volume chamber located within the first portion claim 1 , the second volume chamber located in the second portion ...

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Номер записи: 70
11-02-2016 дата публикации

DEVICE FOR PREDICTING ENERGY CONSUMPTION AND METHOD FOR PREDICTING ENERGY CONSUMPTION

Номер: US20160040995A1
Автор: KANO Junichi, Nakano Yuzo
Принадлежит: NISSAN MOTOR CO., LTD.

A device for predicting energy consumption includes an obtaining unit (), an air resistance calculating unit (), and an energy consumption predicting unit (). The obtaining unit () is configured to obtain road information including traveling speed information set for each route. The air resistance calculating unit () is configured to calculate air resistance as a calculated air resistance value by an air resistance calculation formula on the basis of the traveling speed information of the scheduled traveling route and to correct the calculated air resistance value so that the air resistance is higher according as the traveling speed along the scheduled traveling route is lower. The air resistance is caused when a vehicle travels along a scheduled traveling route. The energy consumption predicting unit () is configured to predict an energy consumption of the scheduled traveling route on the basis of the corrected air resistance value. 1. A device for predicting energy consumption comprising:an obtaining unit configured to obtain road information including traveling speed information set for each route; calculate air resistance as a calculated air resistance value by using an air calculation formula on a basis of the traveling speed information of a scheduled traveling route, the air resistance being caused when a vehicle travels along the scheduled traveling route, and', 'correct the calculated air resistance value so that the air resistance is higher according as a traveling speed along the scheduled traveling route is lower; and, 'an air resistance calculating unit configured to'}an energy consumption predicting unit configured to predict energy consumption over the scheduled traveling route on the basis of the calculated air resistance value.2. The device for predicting energy consumption according to claim 1 , whereinthe road information includes inclination information for each route, andthe air resistance calculating unit corrects the calculated air resistance ...

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Номер записи: 71
08-02-2018 дата публикации

PRESSURE SENSOR AND SHOCK MITIGATING MEMBER

Номер: US20180038757A1
Автор: Kurisaki Shogo, Nakajima Hiroto, Saitoh Mitsuhiro
Принадлежит: SMC Corporation

A pressure sensor includes a joint portion, and a shock mitigating member including therein a flow path communicating with a branch path. The shock mitigating member includes a first flow path configured to cause a fluid to linearly flow, a blocking wall configured to block the fluid from linearly flowing, and a second flow path communicating with the first flow path and configured to cause the fluid to flow in a direction different from an axial center of the first flow path. Further, the shock mitigating member includes outlets with which the second flow path communicates, and a gap for adjusting a pressure of the fluid is formed between the shock mitigating member and the joint portion. 1. A pressure sensor comprising:a main body portion provided on a passage of a fluid; anda shock mitigating member attached to the main body portion, wherein:the shock mitigating member includesa first flow path communicating with the passage and configured to cause the fluid to linearly flow,a wall portion provided so as to face the first flow path and configured to block the fluid from linearly flowing, anda second flow path configured to allow the first flow path and an opening formed in an outer circumferential surface of the shock mitigating member to communicate with each other, and configured to cause the fluid to flow in a direction different from an axial center of the first flow path, anda gap is formed between the shock mitigating member and an inner circumferential surface of the main body portion, the gap being configured to adjust a pressure of the fluid flowing out from the opening, the inner circumferential surface surrounding the shock mitigating member in a vicinity of the opening; andthe main body portion includesa detection space communicating with the gap, anda diaphragm configured to detect the pressure of the fluid flowing in the detection space.2. The pressure sensor according to claim 1 , wherein the shock mitigating member is formed into a screw shape ...

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Номер записи: 72
06-02-2020 дата публикации

PLATE SPRING MANOMETER

Номер: US20200041370A1
Автор: Christian Jeff, SIMON Thomas, VOELKER Anton
Принадлежит: WIKA Alexander Wiegand SE & CO. KG

A measuring system for detecting pressure and/or density, having at least one process connector, a diaphragm, a measuring unit, a housing and a display, wherein a process pressure acts via the process connector on the diaphragm and the measuring unit converts a stroke of the diaphragm caused thereby into a rotational movement of a pointer when the process pressure is changed via the measuring unit, and the pointer on the display shows the pressure applied on the diaphragm on a scale. The measuring system includes a connecting piece which includes the process connector, a meter base and a tubular extension. 1. A measuring system for detecting pressure and/or density , the measuring system comprising:a process connector;a diaphragm;a measuring unit;a housing;a display; anda connecting piece, which comprises the process connector, a meter base and a tubular extensionwherein a process pressure acts on the diaphragm via the process connector and the measuring unit converts a stroke of the diaphragm caused thereby into a rotational movement of a pointer when the process pressure changes via the measuring unit, andwherein the pointer on the display displays on a scale the pressure applied to the diaphragm.2. The measuring system according to claim 1 , wherein the diaphragm is cohesively connected with the meter base and/or wherein a pressure ring presses edges of the diaphragm against the meter base and supports the diaphragm.3. The measuring system according to claim 1 , wherein the process connector claim 1 , the meter base and the tubular extension are each made as individual components and are joined together in one piece to the connecting piece and/or inner surfaces of the connecting piece facing a process are polished and/or electropolished and/or sanded and/or joining areas between the process connector claim 1 , the meter base and the tubular extension are polished and/or electropolished and/or sanded.4. The measuring system according to claim 1 , wherein the ...

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Номер записи: 73
19-02-2015 дата публикации

RESONANT PRESSURE SENSOR AND MANUFACTURING METHOD THEREFOR

Номер: US20150047434A1
Автор: SUZUKI Yoshitaka, YOSHIDA Takashi, YOSHIDA Yuusaku, YUMOTO Atsushi
Принадлежит: YOKOGAWA ELECTRIC CORPORATION

A resonant pressure sensor includes a first substrate including a diaphragm and at least one projection disposed on the diaphragm, and at least one resonator disposed in the first substrate, at least a part of the resonator being included in the projection, and the resonator being disposed between a top of the projection and an intermediate level of the first substrate.

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Номер записи: 74
03-03-2022 дата публикации

MICROMECHANICAL SENSOR DEVICE AND CORRESPONDING PRODUCTION METHOD

Номер: US20220063990A1
Автор: CLASSEN Johannes, REINMUTH Jochen, Tebje Lars
Принадлежит:

A micromechanical sensor device and a corresponding production method. The micromechanical sensor device has a substrate which has a front side and a rear side. Formed on the front side, at a lateral distance, are an inertial sensor region having an inertial structure for acquiring external accelerations and/or rotations, and a pressure sensor region having a diaphragm region for acquiring an external pressure. A micromechanical function layer by which the diaphragm region is formed in the pressure sensor region. A micromechanical function layer is applied on the micromechanical function layer, the inertial structure being formed out of the second and third micromechanical function layer. A cap device encloses a first predefined reference pressure in a first cavity in the inertial sensor region, and a second cavity is formed underneath the diaphragm region.

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Номер записи: 75
19-02-2015 дата публикации

Catheter Arrangement And Method For Determining A Force Applied To A Catheter End

Номер: US20150051600A1
Автор: Bitzer Andreas
Принадлежит:

A catheter arrangement including a catheter having a proximal end and a distal end and at least one continuous fluid channel, at the proximal end of which a fluid connection and at the distal end of which a nozzle is arranged, which has a cross section that can be varied by a force applied to the distal catheter end; a liquid feed unit, connected to the proximal fluid connection of the catheter feeds liquid into the at least one fluid channel at a predetermined operating pressure. A flow sensor measures, during operation of the catheter arrangement, a pressure drop at the fluid channel. A pressure evaluation unit, connected on the input side in a signal-based manner to the flow sensor, determines a force applied to the distal end of the catheter from the measured pressure drop at the fluid channel and from predetermined deformation characteristics of the associated nozzle. 1. A catheter arrangement , which comprises:a catheter having a proximal end and a distal end and at least one continuous fluid channel, at the proximal end of which a fluid connection and at the distal end of which a nozzle is arranged, which has a cross section that can be varied by a force applied to the distal catheter end,a liquid feed unit, connected to the proximal fluid connection of the catheter, for feeding liquid into the at least one fluid channel of the catheter at a predetermined operating pressure, wherein, in the liquid feed unit, a flow sensor for measuring, during operation of the catheter arrangement, a pressure drop at the at least one fluid channel through which the liquid flows is provided, anda pressure evaluation unit, connected on the input side in a signal-based manner to the flow sensor, for determining a force applied to the distal end of the catheter from the measured pressure drop at the fluid channel and from predetermined deformation characteristics of the associated nozzle.2. The catheter arrangement as claimed in claim 1 , wherein the catheter has at least three ...

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Номер записи: 76
19-02-2015 дата публикации

COMBINATION TESTER

Номер: US20150051848A1
Автор: JR. Daniel Raymond, Jurkowitz
Принадлежит:

A tester that measures pressure includes at least one pressure input port, at least one transducer, GPS communications, and a controller. The transducer measures pressure of the pressure input port. The controller is coupled with the transducer and the GPS communications such that the controller associates location data provided by the GPS communications with the pressure measured by the transducer to create a test result. 1. A tester operable to measure pressure , wherein the tester comprises:at least one pressure input port;at least one transducer coupled to the at least one pressure input port, wherein the at least one transducer is operable to a measure pressure of the at least one pressure input port;GPS communications operable to determine location data of the tester; anda controller coupled with the at least one transducer and the GPS communications, wherein the controller is operable to calculate pressure based on the pressure measurements of the at least one transducer, wherein the controller is operable to associate the location data of the GPS communications with the pressure measurements to create a test result.2. The tester of further including a memory operable to store the test result.3. The tester of further including a battery operable to provide power to the tester.4. The tester of further comprising an auxiliary power port operable to provide power to the tester from an external power source.5. The tester of further comprising an SD card input port configured to receive an SD card claim 1 , wherein the SD card input port is operable to store the test result on the SD card.6. The tester of further comprising a USB port claim 1 , wherein the USB port is operable to transfer the test result to an external device.7. The tester of further comprising wireless communications claim 1 , wherein the wireless communications are operable to connect the tester with a wireless network.8. The tester of claim 7 , wherein the wireless communications are operable ...

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Номер записи: 77
25-02-2021 дата публикации

A sensor for measuring a flow of a fluid

Номер: US20210052173A1
Автор: Adrien Desjardins, Charles Alexander Mosse, Erwin ALLES, Ioannis Papakonstantinou, Joanna M. COOTE, Malcolm FINLAY, Sacha NOIMARK
Принадлежит: UCL BUSINESS LTD

A sensor is provided for measuring a flow of a fluid in a physiological environment, such as within a vessel of a human or animal subject. The sensor comprises an interrogation light guide extending from a proximal end to a distal end of the sensor. The interrogation light guide is configured to transmit interrogation light to, and receive reflected interrogation light from, the distal end of the sensor. The sensor further comprises an excitation light guide configured to transmit excitation light to the distal end of the sensor. The excitation light is provided for heating the fluid (directly or indirectly). The sensor further comprises a sensing element located at the distal end of the sensor. The sensing element comprises at least two etalons for reflecting interrogation light back along the interrogation light guide towards the proximal end of the sensor. Each etalon has a respective optical path length and further has at least one reflective surface external to the interrogation light guide. The sensing element is configured to be in thermal contact with the fluid such that the optical path length of at least one etalon is dependent on a temperature of the fluid. The reflected interrogation light forms an interferogram which is dependent on the optical path lengths of the respective etalons.

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Номер записи: 78
25-02-2021 дата публикации

Pressure Detector

Номер: US20210052797A1
Автор: Hiroyuki Kawajiri, Ryo Kato, Shingo Okamoto
Принадлежит: Nikkiso Co Ltd

A pressure detector that includes a case connectable to a flow route for liquid, and a membrane member provided in the case and with which a liquid-phase portion to be supplied with the liquid in the flow route and a gas-phase portion to be supplied with gas are separated from each other, the membrane member being displaceable in accordance with a pressure of the liquid supplied to the liquid-phase portion, the pressure detector detecting the pressure of the liquid in the flow route by detecting a pressure in the gas-phase portion. The gas-phase portion has an opening through which the gas is allowed to be introduced or discharged in accordance with the displacement of the membrane member, and a secured portion secured for the introduction or discharge of the gas through the opening during the displacement of the membrane member toward a side of the gas-phase portion.

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Номер записи: 79
26-02-2015 дата публикации

Metal Bellows Condition Monitoring System

Номер: US20150052989A1
Автор: David Tanner, Ryan P. Semple
Принадлежит: Baker Hughes Inc

A system for monitoring conditions associated with a pressure-equalizing bellows element within a seal section of an electric submersible pump assembly. Pressure sensors are associated with the seal section to detect differential pressure across the bellows element.

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Номер записи: 80
22-02-2018 дата публикации

Integrated structure of mems microphone and pressure sensor and manufacturing method for the integrated structure

Номер: US20180050902A1
Автор: Yanmei Sun
Принадлежит: Goertek Inc

The present invention discloses a manufacturing method of an integrated structure of a MEMS microphone and a pressure sensor, which comprises the following steps: depositing an insulating layer, a first polycrystalline silicon layer, a sacrificial layer and a second polycrystalline silicon layer in sequence on a shared substrate; etching the second polycrystalline silicon layer to form a vibrating diaphragm and an upper electrode; eroding the sacrificial layer to form a containing cavity of a microphone and a pressure sensor, and etching the sacrificial layer between the microphone and the pressure sensor; etching the first polycrystalline silicon layer to form a back electrode of the microphone and a lower electrode of the pressure sensor; etching a position of the shared substrate below a back electrode of the microphone to form a back cavity; and etching away the region of the insulating layer below the back electrode. A capacitance structure of a MEMS microphone and that of a pressure sensor are integrated on a shared substrate, improving integration of a MEMS microphone and a pressure sensor, and greatly reducing a size of a whole packaging structure; in addition, a microphone and a pressure sensor can be simultaneously manufactured on a shared substrate to improve the efficiency of production.

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Номер записи: 81
25-02-2016 дата публикации

PHYSICAL QUANTITY SENSOR, PRESSURE SENSOR, ALTIMETER, ELECTRONIC APPARATUS, AND MOVING OBJECT

Номер: US20160054188A1
Автор: MATSUZAWA Yusuke
Принадлежит:

A physical quantity sensor includes a semiconductor substrate, a diaphragm section that is disposed on the semiconductor substrate and is flexurally deformed when receiving pressure, a sensor element that is disposed on the diaphragm section, an element-periphery structure member that is disposed on one surface side of the semiconductor substrate and forms a cavity section together with the diaphragm section, and a semiconductor circuit that is provided on the same surface side as the element-periphery structure member of the semiconductor substrate. 1. A physical quantity sensor comprising:a semiconductor substrate;a diaphragm section that is disposed above the semiconductor substrate and is flexurally deformed when receiving pressure;a sensor element that is disposed on the diaphragm section;a wall section that is disposed above one surface side of the semiconductor substrate and configures a cavity together with the diaphragm section; anda circuit section that is provided above the same surface side as the wall section of the semiconductor substrate.2. The physical quantity sensor according to claim 1 ,wherein the sensor element has a piezoresistive element.3. The physical quantity sensor according to claim 1 ,wherein the sensor element is disposed above the same surface side as the wall section of the diaphragm section.4. The physical quantity sensor according to claim 1 ,wherein the circuit section has an insulation layer that is disposed above the semiconductor substrate and a wiring section that penetrates through the insulation layer, andwherein the wall section is formed through the same film formation as at least one of the insulation layer and the wiring section.5. The physical quantity sensor according to claim 4 ,wherein the diaphragm section includes a layer that is configured of a material which has a lower etching rate with respect to an acid etchant than the insulation layer.6. The physical quantity sensor according to claim 1 ,wherein the diaphragm ...

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Номер записи: 82
26-02-2015 дата публикации

Non-Intrusive Pressure Sensor System

Номер: US20150055679A1
Автор: Li Zhen
Принадлежит:

A conduit pressure sensor system and a process for non-intrusively determining the pressure within a conduit. In one example, the sensor system has a base section having an external surface and an internal region in fluid connection with the conduit. A strain sensor and a temperature sensor are positioned adjacent to the external surface of the base section. 1. A method for non-intrusively determining a pressure within a conduit comprising:providing a base section having an internal region in fluid connection with the conduit;providing a strain sensor and a temperature sensor which are positioned adjacent to an external surface of the base section;measuring a temperature with the temperature sensor;measuring a strain with the strain sensor, said strain is based on an internal pressure of the conduit and the temperature of the conduit; andcalculating a pressure within the conduit based upon the measured temperature and the measured strain.2. The method of further comprising calculating a strain due to temperature based upon the measured temperature.3. The method of further comprising calculating a strain due to pressure based upon the measured strain due to pressure and temperature and the calculated strain due to temperature.4. The method of claim 3 , wherein the calculating the pressure within the conduit is based upon the calculated strain due to pressure.5. The method of claim 1 , wherein at least one of the strain sensor and temperature sensor are comprised of fiber optics.6. The method of claim 1 , wherein the base section is comprised of a corrosion material selected from the group consisting of titanium claim 1 , Alloy 13 Cr claim 1 , Alloy S13 Cr claim 1 , Alloy 316L claim 1 , Alloy 22 Cr duplex claim 1 , Alloy 25 Cr duplex claim 1 , Alloy 28 claim 1 , Alloy 825 claim 1 , Alloy 2550 claim 1 , Alloy 625 claim 1 , and Alloy C-276.7. A system for non-intrusively determining pressure comprising;a conduit;a base section having an external surface and an internal ...

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Номер записи: 83
05-03-2015 дата публикации

PRESSURE BALANCED FLOW THROUGH LOAD MEASUREMENT

Номер: US20150059463A1
Автор: Kenison Michael, Morrison Richard
Принадлежит: SCHLUMBERGER TECHNOLOGY CORPORATION

A technique facilitates measuring loads while compensating for the effects of differential pressure. The technique utilizes a load cell comprising a chassis and a sensing element mounted on the chassis. A housing encloses the sensing element in a chamber formed between the chassis and the housing. The housing is connected to the chassis in a manner to transfer loading, e.g. compressive, tensile, and/or torque loading. A pressure compensating piston is positioned within an interior of the chassis and the housing. A plurality of seal points is located in a manner which isolates the sensing element from the effects of differential pressures between the interior and an exterior of the load cell. 1. A system for use in a wellbore , comprising: a load cell chassis;', 'a sensing element mounted on the load cell chassis;', 'an outer housing rigidly connected to the load cell chassis so as to enclose the sensing element; and', 'a pressure compensating piston installed inside the outer housing and movably engaged with respect to the load cell chassis and the outer housing, the pressure compensating piston defining a plurality of pressure affected areas sized to compensate for forces due to differential pressure acting on the interior and exterior of the load cell thereby isolating the sensing element from the effects of the differential pressure., 'a well assembly having a load cell, the load cell comprising2. The system as recited in claim 1 , wherein the outer housing is rigidly connected to the load cell chassis at a rigid connection which fully transfers externally applied tension claim 1 , compression claim 1 , and torque forces from an end of the outer housing to the load cell chassis.3. The system as recited in claim 2 , wherein the forces transferred to the rigid connection are measured by the sensing element.4. The system as recited in claim 3 , wherein the sensing element comprises a strain sensor.5. The system as recited in claim 1 , wherein the pressure affected ...

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Номер записи: 84
03-03-2016 дата публикации

VARIOUS STRESS FREE SENSOR PACKAGES USING WAFER LEVEL SUPPORTING DIE AND AIR GAP TECHNIQUE

Номер: US20160061677A1
Автор: Han Caleb C., Jiang Tongbi, Zhai Jun
Принадлежит:

Sensor packages and manners of formation are described. In an embodiment, a sensor package includes a supporting die characterized by a recess area and a support anchor protruding above the recess area. A sensor die is bonded to the support anchor such that an air gap exists between the sensor die and the recess area. The sensor die includes a sensor positioned directly above the air gap. 1. A sensor package comprising:a supporting die comprising a recess area and a support anchor protruding above the recess area; anda sensor die bonded to the support anchor in a single-sided support cantilever configuration such that a hanging area of the sensor die extends laterally from a contact area of the sensor die directly over the support anchor and an air gap exists between the hanging area of the sensor die and the recess area, and the sensor die comprises a sensor positioned directly above the air gap.2. The sensor package of claim 1 , further comprising a stopper structure protruding above the recess area.3. The sensor package of claim 2 , wherein the stopper structure and support anchor are integrally formed.4. The sensor package of claim 1 ,further comprising a second supporting die characterized by a second recess area and a second support anchor protruding above the second recess area;wherein the supporting die is above and bonded to the second supporting die in a single-sided support cantilever configuration.5. The sensor package of claim 1 , wherein the sensor die comprises a pressure sensor positioned directly above the air gap.6. The pressure sensor package of claim 5 , further comprising an integrated circuit (IC) die claim 5 , and the supporting die is bonded to the IC die.7. The pressure sensor package of claim 6 , further comprising a surface mount substrate selected from the group consisting of a land grid array (LGA) claim 6 , quad flat no-leads (QFN) claim 6 , and ceramic substrate claim 6 , and the IC die is bonded to the surface mount substrate.8. The ...

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Номер записи: 85
03-03-2016 дата публикации

METHOD AND SYSTEM FOR DETERMINING THE VOLATILITY OF A FUEL

Номер: US20160061802A1
Автор: Chaussinand Antoine, Criel Bjorn, Hill David
Принадлежит: Plastic Omnium Advanced Innovation and Research

It is proposed a method for determining the volatility of fuel in a fuel storage system, the method comprising: 1. A method for determining the volatility of fuel in a fuel storage system , the method comprising:determining that a refueling event has occurred and that the fuel storage system has subsequently been sealed;performing a first pressure measurement in the fuel storage system at a first time after the determining;performing a second pressure measurement in the fuel storage system at a second time, the second time occurring after the first time;determining a pressure evolution rate from the first pressure measurement at the first time and the second pressure measurement at the second time; andderiving an estimation of the volatility of the fuel from said pressure evolution rate.2. The method according to claim 1 , wherein said first time is less than 1 minute after said determining.3. The method according to claim 1 , wherein said deriving further takes into account one or more of an ambient temperature claim 1 , a fuel temperature claim 1 , a vapor dome temperature claim 1 , a fuel level claim 1 , a refueling rate claim 1 , a canister load claim 1 , fuel system design parameters claim 1 , an ambient pressure claim 1 , and an altitude of the fuel storage system.4. The method according to claim 1 , wherein said first pressure measurement and said second pressure measurement are carried out at a vapor dome inside said fuel tank.5. The method according to claim 1 , wherein said first pressure measurement and said second pressure measurement are carried out outside said fuel tank claim 1 , in a cavity that is in fluid communication with a vapor dome inside said fuel tank.6. (canceled)8. The fuel storage system according to claim 7 , wherein said pressure sensor is arranged in a vapor dome inside said fuel tank.9. The fuel storage system according to claim 7 , wherein said pressure sensor is arranged in a cavity that is in fluid communication with a vapor dome ...

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Номер записи: 86
22-05-2014 дата публикации

PRESSURE SENSOR CHIP

Номер: US20140137652A1
Автор: ISHIKURA Yoshiyuki, SETO Yuuki, TOKUDA Tomohisa
Принадлежит: AZBIL CORPORATION

A pressure sensor chip includes a sensor diaphragm and first and second retaining members. In a peripheral edge portion of the first retaining member, of a region facing one face of the sensor diaphragm, a region on an outer peripheral side is a bonded region bonded to the one face of the sensor diaphragm, and a region on an inner peripheral side is a non-bonded region not bonded to the one face of the sensor diaphragm. In the peripheral edge portion of the first retaining member, a ring-shaped groove is formed protruding in a direction of a wall thickness of the first retaining member, continuous with the non-bonded region of the peripheral edge portion. The second retaining member is provided with a recessed portion that prevents excessive dislocation of the sensor diaphragm when an excessively large pressure is applied to the sensor diaphragm. 1. A pressure sensor chip comprising:a sensor diaphragm that outputs a signal in accordance with a difference in pressures applied to one face and to another face; andfirst and second retaining members, which face and are bonded to the peripheral edge portions of the one face and the other face of the sensor diaphragm, wherein:in the peripheral edge portion of the first retaining member, of the region facing the one face of the sensor diaphragm the region on the outer peripheral side is a bonded region that is bonded to the one face of the sensor diaphragm, and the region on the inner peripheral side is a non-bonded region that is not bonded to the one face of the sensor diaphragm;in the peripheral edge portion of the first retaining member, a ring-shaped groove is formed protruding in the direction of the wall thickness of the first retaining member, continuous with the non-bonded region of the peripheral edge portion; andthe second retaining member is provided with a recessed portion that prevents excessive dislocation of the sensor diaphragm when an excessively large pressure is applied to the sensor diaphragm.2. The ...

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Номер записи: 87
02-03-2017 дата публикации

SEAL MONITOR FOR PROBE OR TEST CHAMBER

Номер: US20170059442A1
Автор: FRESQUEZ DANIEL A., GILLETTE MARK DAMONE, MCCLANAHAN ADOLPHUS E., WEGLEITNER ALAN J.
Принадлежит:

A method of checking a seal of a probe chamber or test chamber (thermal chamber) during a freezing temperature chamber condition. The thermal chamber provided includes a probe card or a contactor for electrically testing a semiconductor device under test (DUT), a gas inlet, a chiller which provides a freezing chamber temperature, and a pressure sensor for sensing a pressure in the thermal chamber (chamber pressure). Using the pressure sensor, the chamber pressure is sensed while flowing a dry gas through the gas inlet sufficient to render the chamber pressure a positive pressure. The positive pressure is compared to a reference pressure, and from the comparing it is determined whether the thermal chamber is properly sealed. 1. A method of checking a seal of a probe chamber or test chamber (thermal chamber) , comprising:providing said thermal chamber, said thermal chamber including a probe card or a contactor for electrically testing a semiconductor device under test (DUT), a gas inlet, a chiller which provides a freezing chamber temperature (freezing temperature), and a pressure sensor for sensing a pressure in said thermal chamber (chamber pressure);using said pressure sensor, sensing said chamber pressure while flowing a dry gas through said gas inlet sufficient to render said chamber pressure a positive pressure;comparing said positive pressure to a reference pressure, andfrom said comparing, determining whether said thermal chamber is properly sealed.2. The method of claim 1 , wherein said comparing and said determining are both performed automatically.3. The method of claim 1 , provided said positive pressure meets a predetermined positive pressure differential above an ambient pressure surrounding said probe chamber and provided said freezing temperature satisfies a predetermined low temperature specification claim 1 , automatically probing or testing said DUT with said probe card or said contactor coupled by an interface adapter to automatic test equipment ( ...

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Номер записи: 88
02-03-2017 дата публикации

HEAT FLUX SENSOR THAT IMPLEMENTS AT LEAST ONE OPTICAL RESONATOR, GAS SENSOR AND PIRANI GAUGE COMPRISING AT LEAST ONE SUCH SENSOR

Номер: US20170059499A1
Автор: DURAFFOURG Laurent
Принадлежит: Commissariat A L'Energie Atomique Et Aux Energies Alternatives

A heat flux sensor including at least one optical resonator suspended on a support, the optical resonator intended to be suspended in a gaseous environment, at least one first device intended to introduce a measurement light beam into the waveguide, at least one second collection device, intended to collect a detection light beam coming from the optical resonator and a device for heating of the optical resonator. 1. A heat flux sensor comprising at least one optical resonator suspended on a support by at least one suspension element , said optical resonator being configured to be suspended in a gaseous environment , said optical resonator comprising at least one waveguide , at least one introduction device for introducing a measurement light beam into the waveguide , at least one collector configured to collect a detection light beam coming from the optical resonator waveguide and at least one heater for heating said optical resonator.2. The heat flux sensor according to claim 1 , wherein the at least one heater is located away from the optical resonator.3. The heat flux sensor according to claim 2 , wherein the distance separating the at least one heater and the optical resonator is between 200 nm and 10 μm.4. The heat flux sensor according to claim 2 , wherein the at least one heater is a Joule effect heater.5. The heat flux sensor according to claim 2 , wherein the at least one heater comprise at least one conductive wire suspended on said support claim 2 , the wire being connected to a source of electrical voltage or of electrical current.6. The heat flux sensor according to claim 2 , wherein the at least one heater comprises at least one layer of electrical resistance material located facing the optical resonator and arranged on the support claim 2 , the layer of electrical resistance material being connected to a source of electrical voltage or of electrical current.7. The heat flux sensor according to claim 1 , wherein the at least one heater comprises a ...

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Номер записи: 89
20-02-2020 дата публикации

DEVICE FOR MEASURING PRESSURE

Номер: US20200056952A1
Автор: PALIT Ajoy
Принадлежит: ZF FRIEDRICHSHAFEN AG

Device for measuring pressure comprising a base body, and a diaphragm that is arranged on the base body such that the base body and the diaphragm at least partially enclose a cavity, wherein the diaphragm is embodied to be deformable in accordance with the external pressure incident on it, such that the magnitude of a spatial dimension of the cavity is correspondingly changed, wherein a position element is arranged to move in accordance with the diaphragm, wherein an inductive planar coil is arranged across the cavity and opposite to the position element, such that the position element and the inductive planar coil are separated, wherein the position element serves to influence the inductance of the coil in dependence on the magnitude of the separation. 1. A device for measuring pressure comprising:a base body;a diaphragm arranged on the base body such that the base body and the diaphragm at least partially enclose a cavity, and such that the diaphragm is configured to be exposed to an external pressure to be monitored, wherein the diaphragm is deformable in accordance with the external pressure incident on it, such that a distance in a spatial dimension of the cavity is correspondingly changed;a position element fixedly attached to the diaphragm and configured to move in accordance with the diaphragm; andan inductive planar coil arranged at least one of on or in the base body, across the cavity and opposite to the position element, such that the position element and the inductive planar coil are separated by the distance in the spatial dimension, wherein the position element influences an inductance of the coil dependent on the distance in the spatial dimension;wherein the device is configured to determine the external pressure based on the inductance of the inductive planar coil.2. The device according to claim 1 , further comprising a processing unit claim 1 , wherein the processing unit comprises a signal generating unit electrically connected to the coil and ...

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Номер записи: 90
05-03-2015 дата публикации

Low-power data acquisition system and sensor interface

Номер: US20150066438A1
Автор: Brooks Todd Lee, Chandrasekhar Vinay, CHEUNG Yee Ling, Jayakumar Vinod, Jiang Xicheng, Kim Min Gyu, Ku I-Ning, Mehr Iuri, Stoops David Joseph, Zheng Hui
Принадлежит: BROADCOM CORPORATION

A sensor interface includes on-chip relaxation oscillator circuit and a PLL that operate cooperatively to generate a highly accurate clock signal on-chip using low-power components. A photodiode generates a current signal based on an optical signal that is representative of a sensor signal. An ADC that operates based on the highly accurate clock signal generates a digital signal based on the current signal generated by the photodiode, and a processor processed the digital signal to estimate sensor data within the sensor signal. Examples of characteristics that may be sensed can include environmental characteristics (e.g., temperature, humidity, barometric pressure, etc.) and/or biomedical characteristics (e.g., body temperature, heart rate, respiratory rate, blood pressure, etc.). In desired, an amplifier processes the photodiode-provided current signal before it is provided to the ADC. Also, one or more CDACs that generate feedback currents may be used to reduce noise sensitivity of the sensor interface. 1. A sensor interface comprising:an on-chip relaxation oscillator circuit configured to generate a first clock signal;a digital phase locked loop (PLL) configured to generate a second clock signal based on the first clock signal, wherein the second clock signal is synchronized to the first clock signal;a photodiode configured to generate a first current signal based on an optical signal, wherein the optical signal is representative of a sensor signal;an amplifier configured to generate a second current signal based on the first current signal and a feedback current signal;an analog to digital converter (ADC) configured to operate based on the second clock signal and to generate a digital signal based on the second current signal;a current digital to analog converter (CDAC) configured to operate based on the second clock signal and to generate an updated feedback current signal based on the digital signal, wherein the updated feedback current signal reduces noise ...

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Номер записи: 91
28-02-2019 дата публикации

DIALYSIS MACHINE WITH FLUID PUMPING CASSETTE

Номер: US20190060544A1
Автор: Childers Robert W.
Принадлежит:

A dialysis system is disclosed. The example dialysis system includes a housing, a pump actuator housed by the housing, a fluid pumping cassette coupled operably to the housing and including a flexible membrane covering a pump chamber, and a mechanically actuated piston head provided by the pump actuator and positioned to extend towards and away from the fluid pumping cassette. The fluid pumping cassette is positioned such that the flexible membrane of the fluid pumping cassette faces the piston head so that the piston head can push the flexible membrane into the pump chamber of the fluid pumping cassette to expel a fluid from the pump chamber. The example dialysis system also includes a controller programmed to perform a leak test by monitoring a sensed position of the mechanically actuated piston head while the mechanically actuated piston head applies a force to the flexible membrane of the fluid pumping cassette. 1: A dialysis system comprising:a housing;a pump actuator housed by the housing;a fluid pumping cassette coupled operably to the housing and including a flexible membrane covering a pump chamber;a mechanically actuated piston head provided by the pump actuator and positioned to extend towards and away from the fluid pumping cassette, the fluid pumping cassette positioned such that the flexible membrane of the fluid pumping cassette faces the piston head so that the piston head can push the flexible membrane into the pump chamber of the fluid pumping cassette to expel a fluid from the pump chamber; anda controller programmed to perform a leak test by monitoring a sensed position of the mechanically actuated piston head while the mechanically actuated piston head applies a force to the flexible membrane of the fluid pumping cassette.2: The dialysis system of claim 1 , wherein the membrane is moved by the mechanically actuated piston head during the leak test if a leak is present.3: The dialysis system of claim 1 , wherein the controller is programmed to ...

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Номер записи: 92
12-03-2015 дата публикации

Pressure sensitive device for flow detection

Номер: US20150068523A1
Автор: Christian Curtis, Nicholas Powers
Принадлежит: Arrow Electronics Inc

A pressure sensitive device includes a ring having a central axis, first side and second side. The ring includes a dielectric portion parallel to the central axis and between the first and second sides. A flexible membrane is connected to a periphery of the ring on the first side, the flexible membrane including a conductive portion. A perforated membrane is connected to a periphery of the ring on the second side. The perforated membrane is spaced apart and electrically isolated from the flexible membrane by the ring below a threshold pressure differential across the pressure sensitive device. The perforated membrane includes an opening therethrough and a conductive portion facing and corresponding to the conductive portion of the flexible membrane such that a threshold pressure differential across the pressure sensitive device causes deflection between the conductive portions of the flexible membrane and the perforated membrane to change an electrical property.

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Номер записи: 93
10-03-2016 дата публикации

METHOD OF DETERMINING THE PRESSURE IN AN EXTRACORPOREAL CIRCUIT

Номер: US20160067397A1
Автор: GAGEL Alfred, GLASER Benedict, IBRAHIM Haitham, KOPPERSCHMIDT Pascal
Принадлежит:

The present invention relates to a method of determining the pressure or of a parameter correlated with the pressure in an extracorporeal circuit of a blood treatment apparatus, in particular of a dialyzer, wherein at least one blood pump which is driven by at least one motor is located in the blood circuit, wherein the motor current of the named motor and the blood flow or a parameter correlated therewith is measured for determining the pressure or the parameter correlated therewith and wherein the pressure p or the parameter correlated therewith is calculated from the measured values. 14. A method of determining the pressure p or of a parameter correlated with the pressure p in an extracorporeal circuit of a blood treatment apparatus , in particular of a dialyzer , wherein at least one blood pump () which is driven by at least one electric motor (M) is located in the blood circuit , characterized in that the motor current Iof the named motor (M) and the blood flow Qor a parameter correlated therewith is measured for determining the pressure p or the parameter correlated therewith and wherein the pressure p or the parameter correlated therewith is calculated from the measured values.244. A method in accordance with claim 1 , characterized in that using the method the pressure difference Δp is determined upstream and downstream of the blood pump (); the press pis determined upstream of the blood pump and the pressure p of the blood pump ().344. A method in accordance with claim 1 , characterized in that the parameter correlated with the blood flow Qis the speed n of the blood pump () and/or the angular speed ω of the blood pump ().44. A method in accordance with claim 1 , characterized in that the pressure difference Δp is determined upstream and downstream of the pump () in accordance with the formula I=a+b*Q+c*Q*Δp.54. A method in accordance with claim 1 , characterized in that the pressure pis determined downstream of the blood pump () in accordance with the ...

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Номер записи: 94
17-03-2022 дата публикации

SYSTEMS AND METHODS FOR DETERMINING WHICH REFERENCE-LEVEL PRESSURES ARE USED WHEN ESTIMATING AN ALTITUDE OF A MOBILE DEVICE

Номер: US20220082381A1
Автор: DORMODY MICHAEL, HAN GUIYUAN, NAGARAJAN BADRINATH
Принадлежит: NextNav, LLC

Determining which reference-level pressures, from among a plurality of available reference-level pressures, are used when estimating an altitude of a mobile device. Different systems and methods determine isobars based on reference-level pressures of weather stations, and then use the isobars in different ways to identify particular reference-level pressures for use in estimated an altitude of a mobile device. One approach determines the smallest distance between an initial estimated position of a mobile device and a neighboring isobar, and then uses that distance to identify reference-level pressures. Another approach identifies reference-level pressures between an isobar on which an initial estimated position of a mobile device is location and a neighboring isobar. Yet another approach compares the number of identified reference-level pressures and/or locations of the identified reference-level pressures against threshold conditions before determining which reference-level pressures to use. 1. A method , comprising:determining an initial estimated position of a mobile device;identifying a plurality of measurements of pressure, each of the measurements of pressure corresponding to a measurement of pressure at a respective weather station of a plurality of weather stations and corresponding to a location of that weather station;for each measurement of pressure of the plurality of measurements of pressure, converting that measurement of the pressure to a reference-level pressure of a reference-level altitude;determining a plurality of isobars using the reference-level pressures,wherein the plurality of isobars include a first isobar on which the initial estimated position is located and each pair of neighboring isobars from the plurality of isobars are separated by no more than a predefined amount of pressure; andusing the plurality of isobars to estimate the altitude of the mobile device.2. The method of claim 1 , wherein each pair of neighboring isobars from the ...

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Номер записи: 95
28-02-2019 дата публикации

MONITORING POWER DEVICES

Номер: US20190064133A1
Автор: FENTON Roger Alan
Принадлежит:

An apparatus senses properties of a fluid. The apparatus has a pipe section, a valve, and an instrument. The pipe section has an envelope, through which a flow of the fluid is coupled between a tank of an electrical power device and a cooling device. The envelope is disposed about a longitudinal axis, and has a penetration disposed laterally, relative to the longitudinal axis. The valve is disposed within the one or more penetrations and has a closed position and an open position. The instrument is operable for the sensing of the fluid properties, and has a probe disposed in contact with the fluid through the valve in the open position. 1. An instrument for monitoring an electrical power device , the instrument comprising:a valve component for attaching the instrument to a pipe through which a flow of a fluid is coupled between a tank of the electrical power device and a cooling device, the valve component comprising an outlet, an inlet disposed opposite from the outlet along a longitudinal axis of the valve component and attached to the pipe, coupled with a penetration therein, and a solid spherical disk penetrated with a hollow tubular conduit aligned with a diameter of the disk, wherein an open state of the valve corresponds to a position of the disk in which the conduit aligns with the outlet and the inlet;a housing component attached removably to the outlet of the valve component;a probe protruding from the housing component and operable for sensing one or more properties of the fluid wherein, with the valve component in the open state, the conduit accommodates a protrusion of the probe through the valve upon an attachment of the housing component to the outlet of the valve and into contact with the flow of the fluid through the pipe; anda signal generator coupled electrically with the probe and operable for generating a signal corresponding to each of the one or more detected properties.2. The instrument as described in claim 1 , wherein the probe is operable ...

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Номер записи: 96
10-03-2016 дата публикации

FLUID REGULATOR HAVING A RETRACTABLE SENSE TUBE

Номер: US20160069469A1
Автор: Nguyen Tung Kim, Sanders Jeffrey Michael
Принадлежит:

A fluid regulating device includes a valve body having an inlet, an outlet, and a valve port, a control element adapted to be displaced relative to the valve port to control the flow of a fluid between the inlet and the outlet, a control assembly operatively coupled to the control element and including a diaphragm disposed adjacent a diaphragm chamber, and a sense tube. The sense tube has a first end, a second end, and a sense hole formed adjacent the second end. The first end is positioned to communicate with the diaphragm chamber, and the second end is disposed adjacent the outlet, with the second end being movable, relative to the first end, between a first position within the valve body and a second position extending outside of the valve body, the movement being in response to fluid flowing between the inlet and the outlet. 1. A fluid regulating device , comprising:a valve body having an inlet, an outlet, and a valve port;a control element shiftably disposed within the valve body, the control element adapted to be displaced relative to the valve port to control the flow of a fluid between the inlet and the outlet;a control assembly operatively coupled to the control element, the control assembly including a diaphragm disposed adjacent a diaphragm chamber; anda sense tube having a first end, a second end, and a sense hole formed in the sense tube adjacent the second end, the first end being positioned to provide flow communication with the diaphragm chamber of the control assembly, the second end being disposed proximate to the outlet, and the second end being movable, relative to the first end, between a first position within the valve body and a second position extending outside of the valve body adjacent the outlet, the movement being in response to fluid flowing between the inlet and the outlet.2. The fluid regulating device of claim 1 , wherein the second end is movable along an axis that is at least substantially parallel to an axis of the outlet.3. The ...

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Номер записи: 97
27-02-2020 дата публикации

PRESSURE DETECTING DEVICE

Номер: US20200064218A1
Автор: Aoyagi Takuya, ONUKI Hiroshi, Terada Daisuke
Принадлежит: Hitachi Automotive Systems, Ltd.

There is provided a pressure detecting device whose number of connection points and number of parts are small. 1. A pressure detecting device comprising:a sensor unit which includes a strain detecting element which detects a strain amount of a pressure receiving surface strained when receiving a pressure, and a processing circuit which processes a signal from the strain detecting element;a housing which houses the sensor unit; anda terminal which is connected to the sensor unit and part of which is exposed retractably from the housing,wherein the terminal includes a spring mechanism which is provided in the housing and can elastically deform.2. The pressure detecting device according to claim 1 , wherein claim 1 , in the housing claim 1 , an insertion hole in which the terminal is inserted has a tapered shape claim 1 , and a diameter of the insertion hole is formed to become larger toward an inside of the housing.3. The pressure detecting device according to claim 1 , wherein the terminal includes a connection portion which is connected to the sensor unit via a bonding wire.4. The pressure detecting device according to claim 3 , whereinthe housing includes a pressure port which is provided with an introduction hole to which a pressure medium having the pressure is introduced, andincludes a terminal base which is interposed between the pressure port and the connection portion, and fixes relative positions of the pressure port and the connection portion,the pressure receiving surface is provided on a wall surface of the introduction hole, anda recess portion is formed at a portion of the pressure port meeting the connection portion, and an adhesive which adheres the pressure port and the terminal base is applied to the recess portion.5. The pressure detecting device according to claim 3 , whereinthe terminal includes the connection portion, the spring mechanism, and a terminal portion in order toward an outside of the housing, and part of the terminal portion is ...

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Номер записи: 98
15-03-2018 дата публикации

Multiple-dimension imaging sensor and state-based operation of an imaging system including a multiple-dimension imaging sensor

Номер: US20180070895A1
Автор: Adrian David French, Frank Polderdijk, Hein Loijens, Helmut Rosner, James Paul Frerichs, Kyle Alan Pixton, Leonid Khatutskiy, Scott David Kravis
Принадлежит: Dental Imaging Technologies Corp, Teledyne Dalsa BV

Methods and systems are described for operating an imaging sensor, the imaging sensor including a multi-dimensional sensor. An electronic processor receives an output from the multi-dimensional sensor and transitions the imaging sensor from the low-power state into a ready state in response to a determination by the electronic processor, based on the output from the multi-dimensional sensor, that a first state transition criteria is satisfied and transitions the imaging sensor from the ready state into an armed state in response to a determination that a second state transition criteria is satisfied. In some implementations, the electronic processor operates the imaging sensor to capture image data only when operating in the armed state and prevents the imaging system from transitioning from the low-power state directly into the armed state.

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Номер записи: 99
07-03-2019 дата публикации

PACKAGING A SEALED CAVITY IN AN ELECTRONIC DEVICE

Номер: US20190071304A1
Автор: Cook Benjamin Stassen, FRUEHLING Adam Joseph, HALLAS James F., Herbsommer Juan Alejandro, Jacobs Simon Joshua, LONG Randy
Принадлежит:

An electronic device includes a package substrate, a circuit assembly, and a housing. The circuit assembly is mounted on the package substrate. The circuit assembly includes a first sealed cavity formed in a device substrate. The housing is mounted on the package substrate to form a second sealed cavity about the circuit assembly. 1. An electronic device , comprising:a package substrate;a circuit assembly mounted on the package substrate, the circuit assembly comprising a first sealed cavity formed in a device substrate; anda housing mounted on the package substrate to form a second sealed cavity about the circuit assembly.2. The electronic device of claim 1 , wherein the first sealed cavity comprises a channel formed in the device substrate and a sealing plate bonded to the device substrate.3. The electronic device of claim 2 , further comprising a pressure sensor coupled to the sealing plate and configured to measure pressure within the first sealed cavity as a function of displacement of the sealing plate.4. The electronic device of claim 2 , wherein the sealing plate comprises a dielectric membrane.5. The electronic device of claim 2 , further comprising:an acoustic sensor coupled to the sealing plate and configured to measure vibration of the sealing plate; andcontrol circuitry coupled to the acoustic sensor, the control circuitry configured to determine pressure within the first sealed cavity as a function of the mechanical harmonic signature of the sealing plate.6. The electronic device of claim 1 , further comprising a pressure sensor coupled to the housing and configured to measure pressure within the second sealed cavity as a function of displacement of the housing.7. The electronic device of claim 1 , further comprising:an acoustic sensor coupled to the housing and configured to measure vibration of the housing; andcontrol circuitry coupled to the acoustic sensor, the control circuitry configured to determine pressure within the second sealed cavity as a ...

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Номер записи: 100