СПОСОБ ИСПЫТАНИЙ ЭЛЕКТРООБОРУДОВАНИЯ АВТОТРАНСПОРТНЫХ СРЕДСТВ НА ВОСПРИИМЧИВОСТЬ К ЭЛЕКТРОМАГНИТНОМУ ПОЛЮ

Изобретение относится к электрическим испытаниям транспортных средств. В способе испытаний электрооборудования автотранспортных средств на восприимчивость к внешнему электромагнитному полю испытываемое электрооборудование устанавливают в бортовую сеть транспортного средства и подвергают воздействию внешнего излучения с заданными параметрами. На каждой частоте воздействующего излучения транспортное средство позиционируется в горизонтальной плоскости по отношению к внешнему источнику электромагнитного поля в диапазоне определенных углов. Во время испытаний угловая скорость вращения транспортного средства относительно внешнего источника излучения не должна превышать 5 град/с. При этом минимальное расстояние между внешним источником излучения и транспортным средством выбирается исходя из максимального линейного размера транспортного средства в горизонтальной плоскости и угла главного лепестка диаграммы направленности в горизонтальной плоскости внешнего источника излучения. Повышается полнота ...

Блок измерения частоты следования импульсов

Полезная модель относится к измерительной технике и может быть использована в устройствах контроля параметров окружающей среды для кодирования сигналов с частотных датчиков. Техническим результатом полезной модели является уменьшение погрешности измерения частоты. Технический результат достигается тем, что блок измерения частоты следования импульсов, содержащий генератор, счетчик тактовой частоты, первый D-триггер, первый элемент И, входную шину, шину числа тактовых импульсов, дополнительно содержит программируемую логическую интегральную схему (ПЛИС), в которой дополнительно спроектированы умножитель тактовой частоты, двоичный сумматор, первый и второй кодировщик частоты, причем каждый кодировщик частоты содержит счетчик тактовой частоты, первый D-триггер, первый элемент И, дополнительно каждый кодировщик частоты содержит второй D-триггер, первый и второй S-триггеры, элемент ИЛИ, второй элемент И, при этом входная шина соединена с первым вводом ПЛИС, выход генератора соединен со вторым ...

УСТРОЙСТВО ОПРЕДЕЛЕНИЯ ЧАСТОТЫ ВЕКТОРА ЭДС ЭЛЕКТРОДВИГАТЕЛЕЙ ПЕРЕМЕННОГО ТОКА

Устройство определения частоты вектора ЭДС электродвигателей переменного тока, содержащее блок преобразования фаз, выполненный с возможностью подключения к статорной обмотке электродвигателя, и двенадцать формирователей сигнала, причем выходы блока преобразования фаз соединены с входами формирователей сигнала, отличающееся тем, что дополнительно введены схема контроля четности, две дифференцирующие цепи, логический элемент НЕ, логический элемент ИЛИ и преобразователь частота-напряжение, причем выходы формирователей сигнала подключены к входам схемы контроля четности, выход которой присоединен к входу первой дифференцирующей цепи и к входу логического элемента НЕ, выход которого соединен с входом второй дифференцирующей цепи, а выходы дифференцирующих цепей присоединены к входам логического элемента ИЛИ, выход которого подключен к входу преобразователя частота-напряжение, выход которого соединен с выходом устройства. РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 165 379 U1 (51) МПК G01R 23/10 (2006.01) G01R 23/12 (2006.01) H02P 6/182 (2016.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ТИТУЛЬНЫЙ (21)(22) Заявка: ЛИСТ ОПИСАНИЯ ПОЛЕЗНОЙ МОДЕЛИ К ПАТЕНТУ 2015155179/07, 22.12.2015 (24) Дата начала отсчета срока действия патента: 22.12.2015 (72) Автор(ы): Колесников Евгений Борисович (RU) (73) Патентообладатель(и): Колесников Евгений Борисович (RU) R U Приоритет(ы): (22) Дата подачи заявки: 22.12.2015 (45) Опубликовано: 20.10.2016 Бюл. № 29 1 6 5 3 7 9 R U (57) Формула полезной модели Устройство определения частоты вектора ЭДС электродвигателей переменного тока, содержащее блок преобразования фаз, выполненный с возможностью подключения к статорной обмотке электродвигателя, и двенадцать формирователей сигнала, причем выходы блока преобразования фаз соединены с входами формирователей сигнала, отличающееся тем, что дополнительно введены схема контроля четности, две дифференцирующие цепи, логический элемент НЕ, логический элемент ИЛИ и преобразователь частота- ...

Wobbulator frequency value determining device - uses interpolation counter to restart at each frequency marker and processor to determine wanted frequency

The wobble-oscillator (1) has a wobble-frequency (fw) superimposed with a frequency-raster (fr) that produces equidistant frequency-markers (M) separated by delta f. A frequency marker counter (6) counts the number (n) of the frequency markers starting with the start-frequency (fo) up to the event-time (E). An interpolation-counter (5) restarts at each frequency marker (M) and a processor (7) determines the wanted frequency (fx), according to the mathematical expression: fx = fo + n.delta f + delta f.x/a where (x) is the count of the interpolation-counter (5) at the event-time (E), (a) is the count at the time of the next frequency-marker and (n) is the count of the frequency-marker counter (6). USE/ADVANTAGE - For HF receiver, network analyser or spectrum analyser. Determines frequency-value of wobble-oscillator at given event-time accurately.

EINRICHTUNG ZUR MESSUNG DER ABWEICHUNG DES ISTWERTS VOM SOLLWERT DER FREQUENZ EINES PERIODISCHEN ELEKTRISCHEN SIGNALS

Body function frequency measuring appts. esp. for breathing rate - determines quotient of measured to reference count values using programmable memory and binary counters

The circuit is for measuring the frequency of a periodic signal and is esp. applicable to bodily functions such as breathing. The conventional method of counting breaths over a period of half to one minute is automated simply. The number of pulses derived from a signal corresp. to the function is fed to a programmable memory with a number of reference pulses. The quotient of the measured reference pulse counts is digitally determined. The derived and reference pulses are fed to binary counters whose output values are fed as addresses to the programmable memory or memories at defined times. The transfer times are determined by a decoder. At these times the count values are first input to intermediate memories and converted into addresses before transfer to the programmable memories.

Schaltungsanordnung zur Messung der Frequenz eines elektrischen Signals

PULSE COUNTING-RATE METER

... 1436286 Pulse rate counters MITSUBISHI DENKI KK 14 June 1974 26447/74 Heading H3A A pulse rate counter shapes the input pulses to provide pulses of a predetermined width which are fed via a limiter, e.g. Fig. 2b to a lowpass filter Fig. 3b which includes an amplifier OP having series feedback. The filter may include resistors R1, R2, and capacitors C1, C or the resistor R2 and capacitor C may be omitted, Fig. 3a (not shown).

APPARATUS FOR MEASURING FREQUENCIES

... 1359209 Measuring frequency ADRETELECTRONIQUE 14 July 1971 [30 July 1970] 33118/71 Heading G4H A frequency applied to the input X of a frequency measuring circuit is obtained as the digital outputs from "coarse" and "fine" meters 8, 16; the output from meter 8, which is of medium precision, is used to control a frequency synthesizer 1 incorporating an interpolation oscillator 7, and the output from meter 16 indicates the frequency increments imposed on oscillator 7 by the output from a comparator 13 to which are applied the unknown frequency and a frequency from synthesizer 1. The output from 8 is applied as, e.g., four digits P 1 -P 4 (of which only digits P 2 -P 4 are accurately provided) to respective decade units 2-5 which generate in turn frequencies F 0 + I 1 , F 0 +I 1 /10+I 2 , F 0 +I 1 /100 +I 2 /10+I 3 , F 0 +I 1 / 1000+I 2 /100+I 3 /10+I 4 , where Ij = Pj kHz, and F 0 is a carrier frequency removed at 5a. The input frequency may be regarded as being of the form F x + #, where ...

Measuring the frequency of a sinusoidal signal

A device for high resolution measurement of frequency of a sinusoidal signal generated by a signal generator using an analog to digital converter to digitize the signal at an adjustable sampling frequency for a period defined by a given zero transition. The frequency is proportional to the number of samples taken within the measured period adjusted by a mathematical relationship between the absolute values of the sampled signal before and after the zero transition.

FM FREQUENCY MEASURING APPARATUS

COUNTING APPARATUS AND METHOD FOR FREQUENCY SAMPLING

METHODS OF AND CIRCUIT ARRANGEMENTS FOR MEASURING FREQUENCY

Methods for determining the frequency or period of a signal

Method and apparatus for controlling the frequency of a variable frequency oscillator

... 1129267 Frequency dividers AGA AB 14 Oct 1965 [28 Oct 1964] 43588/65 Headings G4D D7X D6C1 D6C2 and D6Y An oscillator 9 is set to operate at a multiple n of the frequency of a standard oscillator 12. The multiple n is made up of 2x + y, where x pulses pass through gate 3 and y pulses through gate 4, changeover from one gate to the other being effected first when the number x set up on switches 15 is attained by a counter 7 and changeover in the opposite direction when counter 7 reaches full capacity. Phase difference between the outputs of counter 7 and the standard oscillator 12 controls the oscillator 9 in known manner.

Improved apparatus and method for counting high frequencies

... 1,111,948. Measuring frequencies. W. K. ROSENBERRY, [trading as ABLE RESEARCH Lab.]. 29 July, 1965 [24 Aug., 1964], No. 32443/65. Heading G4H. Apparatus for determining the frequency f 1 of an input signal comprises means for generating a signal related to the frequency of the input signal and this generated signal f 2 being then applied to gating means which are enabled for f 1 a time interval proportional to - so that a f 2 counter counts the cycles of the frequencies f 1 . In one embodiment 12 = # 1 /N 1 (# 1 ) and both signals are applied to a time converter 16 (Fig. 1) where they are proportionally slowed down before being fed into a ratio counter 17, the # 1 output - of which is fed to a time base 18 # 2 which enables a gate 21 for N 1 x 10-k secs. so that the count in counter 22 = # 1 x 10-k. In a further embodiment (Fig. 3) the signal # 2 is further divided by a factor N 2 and fed together with a frequency ## from an oscillator to a frequency synthesizer the output ...

Improvements in or relating to apparatus for electrical frequency measurement

... 747,489. Frequency measurement. CINEMATELEVISION, Ltd. Feb. 9, 1954 [Feb. 19, 1953], No. 4683/53. Class 37. An electrical frequency measuring apparatus comprises a frequency determining circuit of limited range supplied from the difference frequency output of a mixer circuit over a lowpass filter cutting off at the upper limit of the range of the frequency determining circuit; the mixer being supplied with the input signal to be measured and with one of a plurality of signals of differing and accurately known frequencies generated by an oscillator circuit; and circuit means responsive to the absence of a signal at the output of the low-pass filter to control the operation of a selector which successively applies the several known frequency signals to the mixer, until a signal appears at the filter output and the difference frequency is thus brought within the range of the frequency determining circuit, whereby the measured frequency is equivalent to the sum of the selected known frequency ...

FREQUENCY/DIGITAL CONVERSION MEANS

... 1480527 Frequency-to-digital conversion ASEAAB 21 Nov 1974 [22 Nov 1973] 50436/74 Heading H3H A frequency F x is converted into a digital signal F by incrementing a counter UDC by a quantity N 2 for each pulse of F x to produce a new maximum value of the contents of the counter which is memorized in a register RL to provide the digital output F and to control the multiplication factor of a multiplier DRM which receives constant frequency pulses from a clock generator CLC and produces multiplied pulses FR, the counter UDC being decremented by N 1 (N 1 #N 2 ) for each FR pulse. For a binary coded decimal counter N 1 =1, N 2 =100 (i.e. the FR pulses are fed to the 3rd stage of the counter). For a pure binary counter, N 2 would be a power of 16. Theory and circuit details are given, Fig. 2 (not shown), synchronizing logic SCL including inverters used as delays. The input frequency F x may represent the speed of an engine shaft, the output F may be used for controlling the speed.

FREQUENCY OR SPEED DETERMINING MEANS

... 1489491 Measuring frequency digitally ASEA AB Feb 1975 [7 Feb 1974] 5054/75 Heading H3H To obtain an immediate representation of the frequency of a pulse train Fx, a counter 10 is preset in response to a pulse of Fx to a value corresponding to the highest frequency to be measured and after elapse of a time interval corresponding to the period of this highest frequency the counter is decremented at a rate F3 proportional to the square of its contents F, obtained by multipliers 12, 13, the contents of counter 10 being gated into a register 11 on detection of the next Fx pulse to give the required digital representation F L ...

Improvements in or relating to apparatus for determining the frequency of electrical signals

... 799,674. Frequency measuring. RANK CINTEL, Ltd., [formerly CINEMA-TELEVISION, Ltd.]. Sept. 14, 1956 [Sept. 15, 1955], No. 26434/55. Class 37. Apparatus for measuring the frequency of electric signals; particularly intermittent signals such as a keyed carrier in which each signal portion is too short for satisfactory measurements comprises a first means 5 operative only during the reception of input signals above a predetermined amplitude to allow these signals to be passed to a counter 8 and indicating means 9, and a second means 7 for applying constant frequency signals to a second counter means 11 which on receipt of a predetermined number of signals operates to prevent further application of the input signals to the first counter means 8. The incoming signal is passed through a gate 2 which is opened by a start pulse from 3 (supplied for example by an operator) and closed on receiving a suitable signal from counter 11. After passing through the gates the signal goes to a detector 4 and ...

COUNTING CIRCUIT FOR THE DETERMINATION OF THE EMPFANGSFREQUENZ AND/OR THE RECEIVING CHANNEL IN A HIGH FREQUENCY SUPERHETERODYNE RECEIVER

ZAEHLSCHALTUNG ZUR ERMITTLUNG DER EMPFANGSFREQUENZ BZW. DES EMPFANGSKANALS IN EINEM HOCHFREQUENZUEBERLAGERUNGSEMPFAENGER

EFFICIENT CLOCK CALIBRATION IN ELECTRONIC DEVICES

Device for the measurement of the intensity of a magnetic field, e.g. the magnetic Erdfeldes, on board a vehicle od.dgl.

Procedure and device for the measurement of magnetic fields, in particular weak magnetic fields, on board a vehicle

ROTATIONAL SPEED SENSING

CIRCUIT FOR PRODUCING A DIGITAL COUNT REPRESENTING THE AVERAGE VALUE OF A VARIABLE FREQUENCY

PULSIMETER

A pulsimeter for indicating the average heart beat rate by counting the number of beats occurring during a predetermined period of time, comprising a pulse sensor means adapted for flat application against a part of a human body, and an electronic counter and display preferably arranged for being worn on a person's wrist. The electronic counter and display comprise an input processing circuit which receives electrical pulses at the rate of the heart beats from the pulse sensor and which supplies to a counting circuit an electrical signal having n pulses for one heart beat, n being an integer factor of 60 greater than 1 and less than 60. The counting circuit, also comprised within the electronic counting and display repeatedly counts the pulses from the input processing circuit during the predetermined period of time, the duration of which is 60/n seconds. The counting circuit is reset at the end of each such period of time, just after having transmitted its end counting value to memory ...

MICROWAVE FREQUENCY COUNTER

PULSE GENERATION AND TRACKING SYSTEM

PULSE GENERATION AND TRACKING SYSTEM A pulse generation and tracking system for connection to an object or a subject under treatment therewith, the waveform being a train of repetitive complex pulses each pulse comprising a large amplitude, short duration positive polarity portion and a small amplitude, long duration negative polarity portion, and a zero value portion. The prescribed pulse train for a subject is delivered by a delivery device, which also provides monitoring of the averaged voltage amplitude of the positive portion in terms of either voltage or current value. The impedance of the subject is expected to change over time and cause the individual pulses to vary from predetermined limits. When this occurs, then a subsequent generation of pulses will be changed so that the pulses are again delivered within the predetermined value limits or boundary. Tracking and generation can be operationally crossed, if desired, so that a voltage out of boundary will cause the current of a ...

FULL AND PARTIAL CYCLE COUNTING APPARATUS AND METHOD

Apparatus for determining the number of cycles occurring in a frequency modulated signal during a sample period, including not only the number of full cycles but any portion of a cycle, by determining the number of whole cycles and adding to this a value obtained by counting the number of high frequency clock cycles occurring between the time of the last rising edge of a full cycle and the end of the sample period, and the number of high frequency clock cycles occurring from the last rising edge prior to the start of the sample period and the start of the sample period and the number of high frequency clock cycles in a whole cycle.

Anordnung für das Umsetzen einer Frequenz in eine ihr proportionale Gleichspannung

Einrichtung zur Messung kleiner Impulsraten

Verfahren und Vorrichtung zur Analog/Digital-Umwandlung

Verfahren und Einrichtung zur Regelung einer durch elektrische Schwingungen veränderliche Frequenz dargestellten Grösse eines Vorganges

Elektrische Zähleinrichtung

Digitale, elektrische Zählvorrichtung

Compteur-décompteur à décades

Magnétomètre pour la mesure de l'intensité d'un champ magnétique, à bord d'un mobile

Digitale, elektrische Zählvorrichtung

Digitale, elektrische Zählvorrichtung

VORRICHTUNG ZUM VORUEBERGEHENDEN SPEICHERN VON FAHRZEUGGESCHWINDIGKEITEN UND BETRIEBSZUSTAENDEN.

Appareil de mesure de la fréquence d'un signal électrique

Schaltungsanordnung für elektronische Zähleinrichtung

Procédé de mesure de l'intensité d'un champ magnétique, à bord d'un mobile, et magnétomètre pour la mise en oeuvre de ce procédé

Digitale, elektrische Zählvorrichtung

Verfahren und Einrichtung zur Messung der Frequenz von einem einen bestimmten, einstellbaren Pegel überschreitenden elektrischen Signal

Rate-measuring clock

ZAEHLSCHALTUNG TO THE DETERMINATION OF THE EMPFANGSFREQUENZ AND/OR THE RECEIVING CHANNEL IN A HIGH FREQUENCY SUPERHETERODYNE RECEIVER.

Electronic magnetometer and magnetic field measuring method

Quadrupleur de fréquence numérique.

A.QUADRUPLEUR DE FREQUENCE NUMERIQUE. B.PROCEDE CARACTERISE EN CE QU'ON DETECTE LES SIGNAUX D'ENTREE QUE L'ON RETARDE PAR PLUSIEURS ELEMENTS DE TEMPORISATION COMMANDES PAR CADENCE, ON DETECTE LA COINCIDENCE ENTRE AU MOINS DEUX DES SIGNAUX RETARDES, ET ON INTRODUIT DES IMPULSIONS SUPPLEMENTAIRES DANS LA SORTIE DU MULTIPLICATEUR, EN FONCTION DE LA DETECTION DE COINCIDENCE.

FAST DEVICE OF MEASUREMENT OF the FREQUENCY Of a PERIODIC ELECTRICAL SIGNAL

METHOD AND AN ARRANGEMENT FOR MEASURING THE PULSE SEQUENCE FREQUENCY OF A PULSE SEQUENCE

PULSE REPETITION RATE METERS

DEVICE FOR MEASURING THE FREQUENCY OF A SINUSOIDAL SIGNAL PRODUCED BY A SIGNAL GENERATOR

GATE CONTROL APPARATUS FOR SETTING THE INPUT SIGNAL COUNTING INTERVAL

SYSTEM OF MEASUREMENT SPEED

PROCEEDED Of USE Of a BINARY REGISTER HAS NR BISTABLE CELLS MAKING IT POSSIBLE TO DETERMINE the RATIO OF TWO FREQUENCIES AND DEVICE FOR the IMPLEMENTATION OF the PROCESS

SYSTEME POUR DETERMINER LE TAUX MOYEN VRAI D'IMPULSIONS D'ENTREE

L'invention concerne un système déterminant le taux moyen vrai d'impulsions d'entrée. Il comprend des diviseurs par 4 D1-D6 et des registres d'intégration IRI-IR6 établissant une moyenne à plusieurs niveaux. Aux registres répond un circuit de meilleure estimation BE produisant une meilleure estimation du taux moyen vrai de l'information d'impulsions, correspondant à la moyenne du niveau d'établissement de moyenne à comptage complet le plus élevé. Utilisation pour le contrôle et la surveillance de rayonnements.

INDICATING PULSOMETER OF THE AVERAGE RATE/RHYTHM OF THE CARDIAC PULSATIONS

METHOD AND APPARATUS FOR MONITORING FREQUENCY

APPARATUS AND METHOD FOR MEASURING THE OSCILLATIONS OF AN OSCILLATOR

An apparatus for determining a measurement value for the oscillations of an oscillator having a plurality of phase outputs that have occurred in one reference interval includes at least one counter connected to a predetermined phase output of the oscillator and incremented at a predetermined change of state of the phase output. Further, the apparatus comprises an evaluation means connected to the plurality of phase outputs and the counter, wherein the evaluation means is implemented to determine, at the end of the reference interval, a relative phase value of the oscillator with respect to the phase value associated with the predetermined phase output, and to determine the measurement value by using the count at the end of the reference interval and by using the relative phase value.

ELECTRICAL SIGNAL FREQUENCY DETECTOR

A circuit for measuring the frequency of an electrical signal includes a detector (52) that senses a reoccurring phase point of the electrical signal. A divide-by-M counter (56) is connected to the detector and produces a control signal upon every Mth occurrence of the indication, where M is a positive number greater than one. A clock signal generator (60) is provided. An output counter (58) counts cycles of the clock signal between occurrences of the control signal and divides the count by M to produce an output count that corresponds to the frequency of the electrical signal.

Station-signal frequency indication system for radio receiver

A station-signal frequency indicating system for a radio receiver, in which the content in a counter counting an output of a local oscillator in the receiver is temporarily retained by a latching circuit and in turn is displayed by an indicator, and in which a control circuit inhibits the retained content in the latching circuit from being changed, immediately after the receiver is tuned exactly to a station signal until the receiver is detuned from this station signal.

Memory circuit including an EEPROM provided with unique addressing means for storing at selected memory cells frequently incremented count data

A counter is provided which updates a most-recent counter value to be stored in a non-volatile memory. The counter includes a counter circuit for receiving a series of count pulses defining a count operation and outputting a series of coded binary signals in response thereto. Each one of the series of coded binary signals includes at least first digit data and second digit data. A selecting circuit is coupled to the non-volatile memory and the counter circuit for logically selecting, in response to each respective second digit data, a first select memory cell in the non-volatile memory for which the corresponding first digit data is to be stored. A write control circuit is coupled to the non-volatile memory and the counter circuit for writing a subsequent first digit data over the first select memory cell when a counting operation of the respective digit value has not reached completion, and writing the subsequent first digit data in a different memory cell when a counting operation of ...

Means for determining frequency

An arrangement for measuring frequency includes a counter unit and two multipliers connected in series with each other to the counter unit. A sensing unit senses each pulse in an unknown pulse train, the frequency of which is to be determined. The multipliers form a second pulse train, the frequency of which is proportional to the square of the content of the counter unit. The counter unit reduces its content by a predetermined amount for each pulse in the second pulse train. The sensing unit delivers a third pulse train to the counter unit, which causes the counter unit to preset its content to a predetermined maximum quantity. The content of the counter unit at the time of each pulse in the first pulse train indicates the frequency of the first pulse train.

SYSTEM FOR MEASURING INSTANTANEOUS FREQUENCY VALUES

An incoming oscillation, whose frequency during a brief reading interval is to be determined, is converted into a first pulse train of cadence f to be compared with the cadence f' of an astable multivibrator responsive to a stored control voltage. During the reading interval the control voltage is modified by a signal depending upon the difference of the two cadences until the same are identical; during an adjoining extended storage period, the modified control voltage keeps the multivibrator operating at the unknown cadence f which is then measured by a binary counter.

Frequency measuring system

The disclosure is of a system for measuring the frequency of an audio signal by converting the signal to a rectangular wave, counting the number of oscillator pulses which can be generated during one cycle of said wave and decoding the number of pulses to obtain the frequency of the audio signal.

Method and apparatus for detecting cut-off frequency of pulse signal

An apparatus (30) and method for detecting a cut-off frequency of a pulse signal (First Pulse Signal) is provided to detect a cut-off frequency of a pulse signal, in a case a frequency of an inputted pulse signal exceeds a maximum rated speed due to various reasons including noises generated by a system environment or an encoder, or system design error, whereby an appropriate action thereto can be taken, the apparatus (30) including an input processor (31) configured to generate a second pulse signal at a time when a rising edge and a falling edge of a first pulse signal appear, in a case the first pulse signal, which is a pulse signal of a monitoring object, is inputted, a counter (32) configured to count a clock signal relative to the second pulse signal generated by the input processor, a reset processor (33) configured to reset the counter at every predetermined (set) period, and a detector (34) configured to generate and output a cut-off frequency of a detection signal, in a case an ...

Frequency synthesizing circuit

DEVICE FOR MEASURING FREQUENCY

СПОСОБ ВИЗУАЛИЗАЦИИ ВЫСОКОЧАСТОТНОЙ ИЗМЕРИТЕЛЬНОЙ ИНФОРМАЦИИ

Изобретение относится к области анализа и отображения измерительной информации в вычислительных системах. Технический результат заключается в увеличении полноты графического представления измерительной информации за счет увеличения числа отсчетов для отображения измерительной информации и дополнительного графического представления математических характеристик измерительной информации. Технический результат достигается за счет того, что для соответствующего временного интервала [Ti, Ti+dTi] дополнительно вычисляют агрегированные значения измерительной информации, после чего визуализацию исходной измерительной информации на интервале времени [Ti, Ti+dTi] заменяют визуализацией диапазона значений измерительной информации, представляемого отсчетами с минимальным значением ординаты и с максимальным значением ординаты, а также вычисленных агрегированных значений. 2 з.п. ф-лы, 2 ил.

СПОСОБ ИЗМЕРЕНИЯ НЕСУЩЕЙ ЧАСТОТЫ АМПЛИТУДО-МОДУЛИРОВАННОГО СИГНАЛА

Изобретение относится к радиоизмерительной технике и может быть использовано в устройствах для измерения несущей частоты амплитудо-модулированного сигнала. Для измерения несущей частоты радиоимпульса формируются два временных интервала. Причем первый интервал формируется по переднему фронту нормированной последовательности прямоугольных импульсов разной длительности с неизвестной частотой, а второй - по заднему фронту этих импульсов. Подсчитывают и суммируют число импульсов эталонной частоты на полученных временных интервалах, а частота определяется как полусумма числа импульсов на полученных временных интервалах за секунду. Технический результат заключается в повышении точности измерений. 4 ил.

UHR

A clock having an in-built electronic calculating circuit (7) and a display unit (4) visualising the calculated result has a switch (8, 8', 12) allocated to the measurement input of the calculating circuit. This switch (8, 8', 12) is briefly closed manually at every beat. The calculating circuit (7) sums up the pulses generated by actuation of the switch (8, 8', 12), calculates the pulse rate from this and displays the latter. ...

SCHALTUNG ZUR FREQUENZREGELUNG, INSBESONDERE IN ELEKTRISCHEN ENERGIEVERTEILUNGSNETZEN

Verfahren und Anordnung zur Frequenzmessung eines periodischen Saegezahnsignals

DIGITALER FREQUENZVERVIELFACHER

VORRICHTUNG ZUR FREQUENZMESSUNG

Electrical apparatus

... 1,103,110. Electronic counters. BECKMAN INSTRUMENTS Inc. 23 March, 1965 [23 March, 1964], No. 12131/65. Heading G4A. A counter comprises a plurality of parallel recirculating electromagnetic delay lines arranged to store three words, each of six characters, spaced apart by one character space, storage and transfer being controlled by major clock pulses in respect of the words, minor clock pulses in respect of the characters, one or other of two leads according to whether 1 or 2 is to be added, and by the information being read out of the delay lines. As described, the accumulator 30 comprises five delay lines weighted 1, 2, 4, 6, 8 to give a parallel biquinary store. An additional line may give the inverse of the 1 line so that pulses are always present on two lines. The apparatus is applied to measuring events per second or measuring time to accomplish a predetermined number of events according to whether switch 20 is in upper or lower position. Assuming the first case and a recirculatory ...

Frequency Measuring Apparatus

... 1,196,907. Frequency measurement. ROLLSROYCE Ltd. 6 July, 1967 [8 July, 19661, No. 30681/66. Heading G4H. Counting of a reference frequency in a reference counter is commenced on the next start of cycle of the unknown frequency following a start signal, and counting of the unknown frequency in a second counter is commenced one cycle of the unknown frequency later, both counts being stopped at the next start of cycle of the unknown frequency following the attainment of a predetermined count in the reference counter. The unknown frequency in C.P.S. is obtained from the quotient of the two counts multiplied by the reference frequency. The counting time is substantially the same for any unknown frequency. The arrangement can be used in a digital engine speed control loop, the input frequency representing engine speed.

SYSTEM FOR PROVIDING A DIGITAL REPRESENTATION OF AN ANALOGUE FREQUENCY OF AN UNKNOWN SIGNAL

... 1394551 Digital measurement of frequency BENDIX CORP 30 April 1973 20465/73 Heading G4H A circuit for measuring the frequency f x of a signal comprises a zero crossing detector 10, the period of the output of which varies with the frequency f x , gates 14, 18 for receiving a reference frequency signal, a flip-flop 12 for enabling the gates to transmit the reference frequency signal for the period of the detector 10 to counters 22, 24 and control gates 16, 20 for transferring the counts stored in the counters to a digital to analogue converter 26. The circuit may be part of a sonar system in which the signal of frequeney f x is the signal reflected from a moving object. The output pulses from the flip-flop 12 alternately open the pairs of gates 14, 16 and 18, 20 to supply the digital measurement of the frequency stored in the counters 22, 24 to the converter 26. The output of the converter may be supplied to a meter, Fig. 4 (not shown), via a low pass filter and to a comparator, the reference ...

Means for measuring the frequency of electric or mechanical impulses

... 688,202. Speedometers. CHAMBERLAIN & HOOKHAM, Ltd., and DEACON, L. O. Feb. 16, 1950 [Feb. 21, 1949], No. 4642/49. Class 106 (iii). [Also in Group XXXVI] Apparatus for measuring the frequency of electrical or mechanical impulses comprises an indicating pointer carried by a spindle intermittently rotated against a return spring by two alternately operative deflecting pawl-andratchet mechanisms responsive to a train of incoming impulses and having a third retaining pawl-and-ratchet mechanism operative to hold the spindle against rotation in the opposite direction; together with a cyclic time control mechanism which renders the deflection ratchet mechanism operative and inoperative over successive alternate time intervals, and renders the retaining ratchet mechanism inoperative at predetermined time intervals, allowing the pointer to reset. An instrument for measuring the frequency of electric or other impulses comprises spindle a, loaded by return spring m, carrying pointer b and ratchet disc ...

FREQUENCY METER

... 1409001 Frequency measuring -BRITISH AIRCRAFT CORP Ltd 14 March 1974 [22 March 1973] 13879/73 Headings H3A and H3H A frequency measuring circuit comprises means for measuring the periodicity of an incoming signal and an amplifier 28 having a feedback circuit 30 whose effective resistance is varied in dependence on the measured periodicity such that the amplifier output is proportional to the frequency of the incoming signal. The input signal is converted to a square waveform by shaper 10 and divided-by-two in divider 12 to produce a control signal which opens gate 14 for alternate cycles of the input signal. When gate 14 is open, high frequency pulses from an oscillator 16 are counted by counter 18. After a delay produced by monostables 20, 22 the value attained by counter 18 during one cycle of the input is transferred to a store 24, and after a further delay counter 18 is cleared by the output from monostable 24. The store 24 actuates switches 26 which connect predetermined resistors ...

ARRANGEMENT FOR ANALYZING PULSE SEQUENCES

... 1410387 Counting electric pulses; image analysing CARL ZEISS JENA VEB 12 Oct 1972 47113/72 Heading G4D Pulse trains are classified and counted by feeding the pulses via a predivider 15 to a cascade counter 14 which produces for each train an output at one of points 1 ... n according to the number of pulses in the train, and then transferring a pulse to the corresponding one of n counters 12, and appropriately timed pulses for enabling the transfer gates 13 and resetting the classifying counter 14 are obtained via a delay and logic network comprising NOTs 1, 2, 3, 4, 5, 6, 10, 11, ANDs 7, 8, and a NOR 9. The pulse trains may represent the size of grains in a specimen. The division ratio of the predivider is adjustable, box 15 having ratios 1 : 1 and 1 : 2 and box 16 #2.

ELECTRICAL APPARATUS

Improvements in Magnetic Resonance Magnetometers

... 1,150,663. Nuclear magnetic resonance magnetometers. COMMISSARIAT A L'ENERGIE ATOMIQUE. April 22, 1966 [April 22, 1965], No.17646/66. Addition to 1,083,266. Heading G1N. In an n. m. r. magnetometer of the type described in the parent Specification comprising two samples 2a, 2b, Fig.1, each surrounded by a pick-up coil, the two pick-up coils 5a, 5b are mutually coupled so that the outputs from amplifiers 7a, 7b each have the form of a signal having a frequency equal to the Larmor frequency of the nuclei of the sample from which the signal was derived with a beat frequency equal to the difference in Larmor frequencies of the two nuclei of the samples, which is proportional to the intensity of the magnetic field to be measured. The output from amplifier 7a is supplied to a detector 12 and filter 17 to demodulate and rectify the signal which is finally supplied to a frequency meter 12, Fig.2 (not shown), which is as described and claimed in Specification 1,150,664 (see Division H3).

DEVICE FOR MEASURING FREQUENCY OF SINUSOIDAL SIGNAL GENERATED BY SIGNAL GENERATOR

A Frequency Meter

... 1,150,664. Frequency discriminators. COMMISSARIAT A L'ENERGIE ATOMIQUE. 22 April, 1966 [22 April, 1965], No. 58438/68. Divided out of 1,150,663. Heading H3A. In a frequency meter, the A.C. signal whose frequency is to be determined is converted into a signal consisting of unidirectional pulses of the same frequency which are supplied to one input of a trigger circuit whose output is supplied with current from the time of arrival of one of the unidirectional pulses and until it receives a control pulse, derived from the output of a frequency divider, on a second input. The frequency divider is supplied with pulses of a higher predetermined frequency via a switch so connected to the output of the trigger circuit that it is held in its conductive state while the above output is supplied with current. The output of the divider is also supplied to an integrating current to provide an indication of the frequency of the original signal. A signal c, e.g. from a n.m.r. magnetometer as described ...

Improvements in "function generator"

... 844,872. Frequency detectors. GENERAL ELECTRIC CO. June 27,1957 [June 29,1956],No. 20301/57. Class 40(5). [Also in Group XXXVI] The mean pulse rate of pulses generated by a random pulse source 53 may be measured by applying them to a bi-stable valve circuit 57 whose output is alternately positive and negative pulses applied to several parallel branches of series R-C, R-L or L-C circuits forming a network 60 with output applied to a full-wave rectifier circuit 63, 64, C. The values of R, C or L in each branch may be determined by inverse Laplace transforms so that the mean current output is proportional to log (1 + rT) where r is the pulse rate and T a constant, or to r where is a constant less than unity. In theory an infinite number of parallel branches corresponding to terms of an infinite series should be used but a finite number of branches produces an approximation. The double diode 56 permits pulses to be semidirectionally injected into the system. The pulse source 53 may be a radiation ...

Блок измерения частоты следования импульсов

Полезная модель относится к измерительной технике и может быть использована в устройствах контроля параметров окружающей среды для кодирования сигналов с частотных датчиков. Техническим результатом полезной модели является уменьшение погрешности измерения частоты. Технический результат достигается тем, что блок измерения частоты следования импульсов, содержащий генератор, счетчик тактовой частоты, первый D-триггер, первый элемент И, входную шину, шину числа тактовых импульсов, дополнительно содержит ПЛИС, в которой дополнительно спроектированы умножитель тактовой частоты, двоичный сумматор, четыре кодировщика частоты, причем каждый кодировщик частоты содержит счетчик тактовой частоты, первый D-триггер, первый элемент И, дополнительно каждый кодировщик частоты содержит второй D-триггер, первый и второй S-триггеры, элемент ИЛИ, второй элемент И, при этом умножитель тактовой частоты имеет четыре выхода тактовой частоты, последовательно сдвинутые по фазе на 90 градусов, при этом входная шина соединена с первым вводом ПЛИС, выход генератора соединен со вторым вводом ПЛИС, шина числа тактовых импульсов соединена поразрядно с группой третьих вводов ПЛИС, первый ввод ПЛИС соединен внутри ПЛИС с первым входом четырех кодировщиков частоты, второй ввод ПЛИС соединен внутри ПЛИС с входом умножителя тактовой частоты, четыре выхода умножителя тактовой частоты соединены последовательно со вторым входом четырех кодировщиков частоты соответственно, группа третьих вводов ПЛИС соединена внутри ПЛИС поразрядно с выходами двоичного сумматора, первые, вторые, третьи и четвертые входы двоичного сумматора соединены поразрядно с выходами первого, второго, третьего и четвертого кодировщиков частоты соответственно, в каждом кодировщике частоты первый вход соединен с информационным входом первого D-триггера, выход первого D-триггера соединен с информационным входом второго D-триггера и с первым входом первого элемента И, инверсный выход второго D-триггера соединен со вторым входом первого ...

Блок измерения частоты следования импульсов

Полезная модель относится к измерительной технике и может быть использована в устройствах контроля параметров окружающей среды для кодирования сигналов с частотных датчиков. Техническим результатом полезной модели является повышение точности измерения частоты. Технический результат достигается тем, что блок измерения частоты следования импульсов, содержащий генератор, счетчик тактовой частоты, первый D-триггер, первый элемент И, входную шину, шину числа тактовых импульсов, причем выход первого D-триггера соединен с первым входом первого элемента И, дополнительно содержит программируемую логическую интегральную схему (ПЛИС), в которой спроектированы счетчик тактовой частоты, первый D-триггер, первый элемент И, в ПЛИС дополнительно спроектированы умножитель тактовой частоты, второй D-триггер, первый и второй S-триггеры, элемент ИЛИ, второй элемент И, при этом счетчик тактовой частоты, синхронный, многоразрядный имеет тактовый вход, вход разрешения счета и выход переполнения, первый и второй D-триггеры синхронные, имеют тактовый вход, информационный вход, первый и второй S-триггеры, синхронные, имеют тактовый вход, вход разрешения установки и вход установки в логическую «1», первый и второй элементы И имеют два входа, элемент ИЛИ имеет два входа, при этом входная шина соединена с первым вводом ПЛИС, выход генератора соединен со вторым вводом ПЛИС, шина числа тактовых импульсов соединена поразрядно с группой третьих вводов ПЛИС, первый ввод ПЛИС соединен внутри ПЛИС с информационным входом первого D-триггера, выход первого D-триггера соединен с информационным входом второго D-триггера, инверсный выход второго D-триггера соединен со вторым входом первого элемента И, выход первого элемента И соединен с входом установки в логическую «1» первого S-триггера и с первым входом элемента ИЛИ, выход первого S-триггера соединен с входом разрешения установки второго S-триггера и с первым входом второго элемента И, выход элемента ИЛИ соединен с входом установки в логическую «1» ...

HIGH SPEED SAMPLING OF SENSORS

Systems and methods for interrogating sensing systems utilising bursts of samples. Bursts of samples correspond to optical pulses returning from optical sensors, where pulses are spaced at a period significantly longer than the pulse width, giving irregular sample spacing. The interrogation system and method processes the irregular busts of samples to recover phase information from received signals. 1. A method of interrogating an optical sensing system performed at an interrogation system , comprising the steps of:receiving a plurality of bursts of samples of an optical signal, each burst of samples comprising a plurality of samples of each pulse in a group of discrete optical pulses, wherein the groups are regularly spaced in time with a group repetition period larger than the group width, and the optical pulses comprise a phase modulated signal;processing the bursts of samples to obtain a series of regularly spaced samples; anddemodulating the regularly spaced samples to retrieve the phase information from the detected pulses.2. A method according claim 1 , wherein processing the bursts of samples comprises processing the samples utilising a filter bank.3. A method according to claim 2 , wherein the filter bank comprises a number of parallel paths equal to the number of samples in each burst.4. A method according to wherein the step of processing comprises the steps of downsampling the received samples claim 1 , upsampling the downsampled samples claim 1 , filtering the upsampled samples claim 1 , and combining the filtered samples.5. A method according to claim 4 , wherein the downsampling ratio is equal to the sample rate in each burst divided by the group repetition frequency.6. A method according to claim 4 , wherein the upsampling is performed at a rate of the group width multiplied by the sample rate in each burst.7. A method of interrogating an optical sensing system performed at an interrogation system claim 4 , comprising the steps of:receiving a ...

FREQUENCY SYNTHESIZER OUTPUT CYCLE COUNTER INCLUDING RING ENCODER

A method of frequency estimation. A clock output from a frequency synthesizer is received at an input of a ring encoder. The ring encoder generates outputs including a ring encoder output clock and an encoded output which represents LSBs of a clock cycle count of the clock output. A binary counter is run using the ring encoder output clock which provides an output count which represents MSBs of the clock cycle count. Using a reference clock, the encoded output is sampled to provide a sampled encoded output and the output count is sampled to provide a sampled output count. Error correcting is applied to the sampled encoded output to provide a corrected sampled encoded output. The corrected sampled encoded output and sampled output count are combined to provide a combined output which is used for estimating an instantaneous or average frequency of the clock output. 1. An integrated circuit device comprising:{'claim-text': ['a first input configured to receive an edge count signal associated with a first clock signal having a first frequency;', 'a second input configured to receive a second clock signal having a second frequency;', 'a resampler circuit coupled to the first input and to the second input and configured to provide an intermediate edge count signal based on the edge count signal and the second clock signal; and', 'a differential circuit coupled to the resampler circuit and configured to provide an output signal representative of the first frequency divided by the second frequency based on a difference between the intermediate edge count signal at a first time and the intermediate edge count signal at a second time.'], '#text': 'a frequency measurement circuit that includes:'}2. The integrated circuit device of claim 1 , wherein the resampler circuit includes:a first latch that includes an input coupled to the first input, a clock signal input coupled to the second input, and an output; anda second latch that includes an input coupled to the output of the ...

Period measuring circuit and semiconductor device including the same

A semiconductor device includes: a counting detection block suitable for generating a counting value of a clock signal transmitted through a first transmission path and a counting value of a target signal transmitted through a second transmission path during a counter enable section, and blocking the first transmission path and the second transmission path based on a comparison result obtained by comparing a predetermined code value with the counting value of the clock signal; and an output block suitable for outputting the counting value of the target signal corresponding to when the first and second transmission paths to a predetermined pad are blocked, based on a test mode signal.

Frequency synthesizer output cycle counter including ring encoder

A method of frequency estimation. A clock output from a frequency synthesizer is received at an input of a ring encoder. The ring encoder generates outputs including a ring encoder output clock and an encoded output which represents LSBs of a clock cycle count of the clock output. A binary counter is run using the ring encoder output clock which provides an output count which represents MSBs of the clock cycle count. Using a reference clock, the encoded output is sampled to provide a sampled encoded output and the output count is sampled to provide a sampled output count. Error correcting is applied to the sampled encoded output to provide a corrected sampled encoded output. The corrected sampled encoded output and sampled output count are combined to provide a combined output which is used for estimating an instantaneous or average frequency of the clock output.

APPARATUS FOR MONITORING PULSED HIGH-FREQUENCY POWER AND SUBSTRATE PROCESSING APPARATUS INCLUDING THE SAME

Disclosed are an apparatus for monitoring pulsed high-frequency power and a substrate processing apparatus including the same. The apparatus includes an attenuation module configured to attenuate a pulsed high-frequency power signal; a rectifier module configured to convert the pulsed high-frequency power signal into a direct current signal; and a detection module configured to detect a pulse parameter based on the direct current signal. 1. An apparatus for processing a substrate , the apparatus comprising:a chamber;a substrate support assembly within the chamber, the substrate support assembly including a lower electrode;a lower impedance matching unit connected to the lower electrode;a first RF power source connected to the lower impedance matching unit, the first RF power source configured to generate a first pulsed power signal according to a first ON/OFF pulse;a second RF power source connected to the lower impedance matching unit, the second RF power source configured to generate a second pulsed power signal according to a second ON/OFF pulse;a pulse input unit configured to apply the first ON/OFF pulse to the first RF power source and apply the second ON/OFF pulse to the second RF power source; and a rectifier module configured to convert the first pulsed power signal into a first direct current signal and convert the second pulsed power signal into a second direct current signal, and', 'a detection module configured to detect a first pulse parameter including at least one of a pulse frequency of the first direct current signal, a pulse duty ratio of the first direct current signal, and a pulse phase difference of the first direct current signal and the second direct current signal., 'a monitoring unit including'}2. The apparatus of claim 1 , wherein the monitoring unit further includes an attenuation module configured to attenuate the first pulsed power signal and attenuate the second pulsed power signal claim 1 , andwherein the rectifier module is further ...

PULSE FREQUENCY MEASUREMENT DEVICE AND METHOD AND CONTROL SYSTEM

The present invention discloses a pulse frequency measurement device and method and a control system, the device including: a hardware counter configured to perform a counting operation on an input pulse sequence to output a counting result; and a processing unit configured to obtain number of pulses from the counting result outputted by the hardware counter and measure a first time period during which the obtained number of pulses occupy, in which the processing unit includes a frequency calculation module configured to calculate a frequency of the input pulse sequence based on the obtained number of pulses and the first time period. According to the invention, it is possible to achieve adaptive pulse frequency measurement and multi-channel sampling for multiple input pulse sequences with a relatively low cost while ensuring the accuracy of the measurement result. 1. A pulse frequency measurement device comprising:a hardware counter that performs a counting operation on an input pulse sequence to output a counting result; anda processing unit that obtains a number of pulses from the counting result and measures a first time period occupied by the obtained number of pulses, wherein the processing unit further comprises a frequency calculation module that calculates a frequency of the input pulse sequence based on the obtained number of pulses and the first time period.2. The pulse frequency measurement device according to claim 1 , wherein the frequency calculation module further calculates the frequency of the input pulse sequence based on a time period of a single pulse measured by the processing unit if the processing unit:determines that number of times that the hardware counter reaches a full-scale counting number obtained from the counting result within a predetermined sampling time period is smaller than a first predetermined threshold; ordetermines that the number of pulses obtained from the counting result within the predetermined sampling time period is ...

Frequency multiplying device

The invention relates to a frequency multiplying device for determination of a fundamental frequency f of an analogue target signal. The device comprises a generating device for generating a reference signal having a frequency f OSC , wherein f OSC is greater than f, and a first counter being coupled to a terminal, the terminal to be fed with the analogue target signal, and being coupled to the generating device such that the first counter counts a number of signal edges generated from the reference signal in a time interval corresponding substantially to 1/f and outputs a first counter signal, wherein a frequency divider is coupled between the generating device and the first counter and a second counter is coupled to the generating device for counting signal edges of a signal generated from the reference signal the second counter outputting a second counter signal and a comparator is coupled to the first counter to receive the first counter signal and coupled to the second counter to receive the second counter signal, wherein the comparator generates a signal in the event the first counter signal is equal to the second counter signal, and the output of the comparator is coupled to reset the second counter.

FREQUENCY MEASUREMENT CIRCUIT AND FREQUENCY MEASUREMENT APPARATUS

A frequency measurement circuit includes a first counter that counts a pulse number of a reference clock signal and generates first count data, a second counter that counts a pulse number of a measurement target clock signal and generates second count data, a time-to-digital conversion circuit that generates first time difference data indicating a time difference between a first timing at which the first counter starts counting of the pulse number and a second timing at which the second counter starts counting of the pulse number, and second time difference data indicating a time difference between a third timing at which the first counter ends counting of the pulse number and a fourth timing at which the second counter ends counting of the pulse number, and a calculation circuit that performs calculation based on the second count data, the first time difference data, and the second time difference data and generates frequency data indicating a frequency of the measurement target clock signal. 1. A frequency measurement circuit comprising:an oscillation circuit that generates a reference clock signal;a first counter that counts a pulse number of the reference clock signal and generates first count data;a second counter that counts a pulse number of a measurement target clock signal and generates second count data;a time-to-digital conversion circuit that generates first time difference data indicating a time difference between a first timing at which the first counter starts counting of the pulse number of the reference clock signal and a second timing at which the second counter starts counting of the pulse number of the measurement target clock signal, and second time difference data indicating a time difference between a third timing at which the first counter ends counting of the pulse number of the reference clock signal and a fourth timing at which the second counter ends counting of the pulse number of the measurement target clock signal; anda calculation ...

Low power small area oscillator-based adc

In one embodiment, a method for measuring current comprises generating a sensor current based on a current being measured. The method also comprises converting a combined current into a first frequency, wherein the combined current is a sum of the sensor current and a common-mode current, and converting the first frequency into a first count value. The method further comprises converting the common-mode current into a second frequency, converting the second frequency into a second count value, and subtracting the second count value from the first count value to obtain a current reading.

ANALYSIS THRESHOLD DETERMINATION DEVICE AND ANALYSIS THRESHOLD DETERMINATION METHOD

An analysis threshold determination device includes a threshold determination unit for determining a pair of or plural pairs of thresholds used for analysis in accordance with a pair of thresholds generated by a calculation unit and a count value output from a. pulse count unit. The calculation unit repeatedly generates a new pair of thresholds in which at least one of the pair of thresholds is changed every time the pulse count unit counts the pulse until reaching a predetermined value. The threshold determination unit chooses a class of a measure of central tendency according to a frequency distribution defining each pair of thresholds generated as a class and the count value output from the pulse count unit as a frequency. The threshold determination unit determines a pair of or plural pairs of thresholds corresponding to a class of a predetermined range from the class of measure of central tendency. 1. An analysis threshold determination device comprising:an optical pickup configured to irradiate, with an irradiation light, an analysis substrate having a surface to which a detection target substance and a particle bound to the detection target substance are fixed, and receive a reflection light of the irradiation light from the analysis substrate to generate a light reception level signal;a calculation unit configured to generate a pair of thresholds for a pulse width of a pulse included in the light reception level signal or a pair of thresholds for a pulse amplitude of the pulse;a pulse determination unit configured to determine whether the pulse width is present within a range of the pair of thresholds for the pulse width or determine whether the pulse amplitude is present within a range of the pair of thresholds for the pulse amplitude;a pulse count unit configured to count the pulse determined to be present within the range of the generated pair of thresholds by the pulse determination unit, and output a count value of the pulse counted; anda threshold ...

METHODS AND DEVICES FOR REAL-TIME MONITORING OF TUNABLE FILTERS

Methods and devices suitable for monitoring the frequency of microwave tunable filters in real time. The frequency readout relies on the natural response of such a filter when excited by a pulse. Methods of measuring an operating frequency of a pole in a tunable filter include measuring a number of cycles in a natural response in the filter when the filter is excited by an electric current pulse, and determining a resonance frequency based on the number of cycles measured in the natural response. Such a method can provide the operating frequency information in a binary digital format, making it relatively easy to read and process. A measuring resonator may be mounted to the filter resonator and connected by a common actuator. 1. A method of measuring an operating frequency of a pole in an RF filter , the method comprising:providing a monitoring resonator opposedly mounted to a filter resonator of the RF filter, the monitoring resonator having a monitoring resonator membrane, the filter resonator having a filter resonator membrane, such that the monitoring resonator membrane and filter resonator membrane are connected by a common planar actuator;injecting a pulse into the monitoring resonator using a pulse injection circuit operatively connected to an input of the monitoring resonator, the pulse injection circuit configured to supply a pulse signal to the monitoring resonator; andmeasuring a number of output pulses having a voltage greater than a predetermined threshold in a predetermined time period from an output of the monitoring resonator using a readout circuit connected to the output of the monitoring resonator to determine a number of cycles in a natural response of the filter, wherein the readout circuit outputs a value in a binary digital format, the value corresponding to said number of pulses;determining a resonance frequency based on the number of cycles measured in the natural response.2. The method according to claim 1 , wherein the operating frequency ...

PHYSICAL QUANTITY MEASUREMENT APPARATUS, ELECTRONIC APPARATUS, AND VEHICLE

A physical quantity measurement apparatus includes a first resonator, a second oscillator, and an integrated circuit device. The integrated circuit device includes a first oscillation circuit that causes the first resonator to oscillate, and thus generate a first clock signal having a first clock frequency, a second oscillation circuit that causes the second oscillator to oscillate, and thus generate a second clock signal having a second clock frequency which is different from the first clock frequency, and a measurement unit that is provided with a time-to-digital conversion circuit which converts time into a digital value by using the first clock signal and the second clock signal. 1. A physical quantity measurement apparatus comprising:a first resonator;a second oscillator; andan integrated circuit device, a first oscillation circuit configured to cause the first resonator to oscillate and generate a first clock signal having a first clock frequency,', 'a second oscillation circuit configured to cause the second oscillator to oscillate and generate a second clock signal having a second clock frequency, the second clock frequency being different from the first clock frequency, and', 'a measurement unit having a time-to-digital conversion circuit configured to convert time into a digital value based on the first clock signal and the second clock signal., 'wherein the integrated circuit device includes2. The physical quantity measurement apparatus according to claim 1 , a first terminal that connects one end of the first resonator to the first oscillation circuit;', 'a second terminal that connects the other end of the first resonator to the first oscillation circuit;', 'a third terminal that connects one end of the second oscillator to the second oscillation circuit; and', 'a fourth terminal that connects the other end of the second oscillator to the second oscillation circuit., 'wherein the integrated circuit device includes3. The physical quantity measurement ...

APPARATUS FOR MONITORING PULSED HIGH-FREQUENCY POWER AND SUBSTRATE PROCESSING APPARATUS INCLUDING THE SAME

Disclosed are an apparatus for monitoring pulsed high-frequency power and a substrate processing apparatus including the same. The apparatus includes an attenuation module configured to attenuate a pulsed high-frequency power signal; a rectifier module configured to convert the pulsed high-frequency power signal into a direct current signal; and a detection module configured to detect a pulse parameter based on the direct current signal. 1. An apparatus for monitoring pulsed high-frequency power , the apparatus comprising:a rectifier module configured to convert a pulsed high-frequency power signal into a direct current signal; anda detection module configured to detect a pulse parameter based on the direct current signal.2. The apparatus of claim 1 , further comprising an attenuation module configured to attenuate the pulsed high-frequency power signal claim 1 ,wherein the rectifier module converts a high-frequency power signal attenuated by the attenuation module into a direct current signal.3. The apparatus of claim 1 , wherein the pulse parameter comprises at least one of a pulse frequency claim 1 , a pulse duty ratio and a pulse phase of the direct current signal.4. The apparatus of claim 1 , wherein the detection module comprises:a differentiator configured to differentiate the direct current signal; andan edge detection unit configured to detect an edge of the direct current signal based on a differentiation value obtained by differentiating the direct current signal through the differentiator.5. The apparatus of claim 4 , wherein the edge detection unit comprises:a rising edge detection unit configured to detect a rising edge of the direct current signal; anda falling edge detection unit configured to detect a falling edge of the direct current signal.6. The apparatus of claim 5 , wherein the detection module further comprises a pulse frequency calculation unit configured to calculate a pulse frequency of the direct current signal based on at least two ...

CLOCK FREQUENCY DETECTION METHOD AND APPARATUS

Embodiments of the present disclosure disclose a clock frequency detection method and apparatus. The method includes: dividing a known internal clock frequency range of the system into n frequency intervals, where each frequency interval is corresponding to a frequency detection module, and n is an integer greater than or equal to 2; obtaining a current internal clock frequency of the system, and using the current internal clock frequency as a reference clock frequency; selecting a frequency detection module corresponding to a frequency interval according to the reference clock frequency; and detecting, by the selected frequency detection module, a to-be-detected clock according to a frequency offset range of the reference clock frequency. By using the present disclosure, a risk that an internal clock of the system is attacked may be reduced, and system security may be improved. 1. A clock frequency detection method , comprising:dividing a known internal clock frequency range of a system into n frequency intervals, wherein each frequency interval corresponds to a frequency detection module, and n is an integer greater than or equal to 2;obtaining a current internal clock frequency of the system, and using the current internal clock frequency as a reference clock frequency;selecting a frequency detection module corresponding to a frequency interval according to the reference clock frequency; anddetecting, by the selected frequency detection module, a to-be-detected clock according to a frequency offset range of the reference clock frequency.2. The method according to claim 1 , wherein a value of n is in positive correlation with a clock frequency detection precision requirement.3. The method according to claim 1 , wherein obtaining a current internal clock frequency of the system claim 1 , and using the current internal clock frequency as a reference clock frequency comprises:measuring the current internal clock frequency of the system, and using the current internal ...

METHOD AND DEVICE FOR MEASURING THE FREQUENCY OF A SIGNAL

A method includes a) counting whole periods of a signal during a first period of a reference signal, b) repeating step a) for each period of the reference signal until a first duration is equal to a first quantity of periods of the reference signal, and c) determining a first average of the whole periods. The method also includes repeating at least one of steps a) to c) and at each repetition shifting a start of the counting of step a) by at least one period of the reference signal, and in steps b) and c) accounting for whole periods of the signal already counted during the at least one preceding group of steps a) and b). The method includes determining a second average of the first averages, and determining the frequency of the signal from the second average and the frequency of the reference signal. 122-. (canceled)23. A method for determining a frequency of a signal comprising:a) counting a number of whole periods of the signal during a first period of a periodic reference signal;b) repeating step a) for each period of the reference signal until a first duration is equal to a first quantity of periods of the periodic reference signal;c) determining a first average of the numbers of whole periods;d) repeating at least one of steps a), b) and c) and at each repetition shifting a start of the counting of step a) by at least one period of the periodic reference signal;e) determining a second average of the first averages; andf) determining the frequency of the signal from the second average and the frequency of the periodic reference signal.24. The method according to claim 23 , wherein the repetitions of steps a) claim 23 , b) and c) are performed in parallel.26. The method according to claim 23 , wherein the repetitions of steps a claim 23 , b) and c) is equal to a second quantity of periods of the periodic reference signal reduced by the first quantity of periods.27. The method according to claim 26 , wherein the first quantity and the second quantity of periods ...

Method and Device for Measuring the Frequency of a Signal

A method includes a) counting whole periods of a signal during a first period of a reference signal, b) repeating step a) for each period of the reference signal until a first duration is equal to a first quantity of periods of the reference signal, and c) determining a first average of the whole periods. The method also includes repeating at least one of steps a) to c) and at each repetition shifting a start of the counting of step a) by at least one period of the reference signal, and in steps b) and c) accounting for whole periods of the signal already counted during the at least one preceding group of steps a) and b). The method includes determining a second average of the first averages, and determining the frequency of the signal from the second average and the frequency of the reference signal. 1. A method for determining a frequency of a signal , the method comprising:a) counting a number of whole periods of the signal during a first period of a periodic reference signal;b) repeating step a) for each period of the periodic reference signal until a first duration is equal to a first quantity of periods of the periodic reference signal;c) determining a first average of the numbers of whole periods;d) repeating at least one of steps a), b) and c) and at each repetition shifting a start of the counting of step a) by at least one period of the periodic reference signal;e) determining a second average of the first averages; andf) determining the frequency of the signal from the second average and the frequency of the periodic reference signal.2. The method of claim 1 , wherein repeating at least one of steps a) claim 1 , b) and c) comprises repeating steps a) claim 1 , b) and c) in parallel.4. The method of claim 1 , wherein the repetitions of steps a claim 1 , b) and c) is equal to a second quantity of periods of the periodic reference signal reduced by the first quantity of periods.5. The method of claim 4 , wherein the first quantity and the second quantity of ...

ELECTRONIC MAGNETOMETER AND METHOD FOR MEASURING MAGNETIC FIELD

An electronic magnetometer and a method for measuring a magnetic field are provided. A Gunn diode with magnetic shielding and a Gunn diode without magnetic shielding generate different induced high-frequency oscillating currents in various environments. The high-frequency oscillating current of the Gunn diode with magnetic shielding and the high-frequency oscillating current of the Gunn diode without magnetic shielding are processed by circuits and subsequently compared. The difference of frequencies in the two currents is proportional to the magnitude of magnetic field, and the magnitude of magnetic field is obtained. 1. An electronic magnetometer , comprising a magnetic sensor , a circuit processing module and a processor module ,wherein the magnetic sensor comprises a gunn diode with magnetic shielding and a gunn diode without magnetic shielding, the magnetic sensor is configured for generating an induced high-frequency oscillating current by the gunn diode with magnetic shielding in an environment of shielding magnetic fields as a first high-frequency oscillating current and outputting the first high-frequency oscillating current to the circuit processing module, and the magnetic sensor is further configured for generating an induced high-frequency oscillating current by the gunn diode without magnetic shielding in an ambient magnetic field as a second high-frequency oscillating current and outputting the second high-frequency oscillating current to the circuit processing module;wherein the circuit processing module is configured for processing the first high-frequency oscillating current and outputting stable square-wave signals with an identical precession frequency recorded as a first precession frequency to the processor module;wherein the circuit processing module is further configured for processing the second high-frequency oscillating current and outputting stable square-wave signals with another identical precession frequency recorded as a second ...

ANOMALY DETECTION APPARATUS, METHOD AND COMPUTER-READABLE MEDIUM

Provided a method comprising: obtaining waveform data sets of a periodic electric waveform signal, with a length set to one cycle time; calculating a frequency spectrum for each waveform data set; extracting and separating odd and even frequency harmonics to create odd and even frequency harmonic matrices on which a canonical correlation analysis (CCA) being applied to obtain CCA features; performing linear transformation on the CCA features to obtain linear transformed features; generating a model based on the linear transformed features; performing magnitude quantization of frequency spectrums of waveform data sets to identify normal and anomalous waveform signals. 1. An anomaly detection apparatus comprising:a processor; anda memory in circuit communication with the processor, wherein the processor is configured to execute program instructions stored in the memory toobtain a plurality of sets of waveform data of a periodic electric waveform signal of an electric appliance, with a length of each individual waveform data being set to one cycle time of the periodic electric waveform;calculate a frequency spectrum for each of the plurality of individual waveform data sets;extract and separate odd and even frequency harmonics of a fundamental frequency which is a reciprocal of the one cycle time from each of the frequency spectrums of the individual waveform data sets to create odd and even frequency harmonic matrices;perform a canonical correlation analysis on the odd and even frequency harmonic matrices to obtain CCA features;perform linear transformation on the CCA features to obtain linear transformed features;generate a model based on the linear transformed features;perform magnitude quantization of a plurality of the frequency spectrums of the plurality of sets of waveform data to identify normal and anomalous waveform signals; andoutput at least the identified result.2. The anomaly detection apparatus according to claim 1 , wherein the periodic electric ...

FREQUENCY COUNTER CIRCUIT FOR DETECTING TIMING VIOLATIONS

A frequency counter circuit includes a first counter path to receive a digitally-controlled oscillator (DCO) clock signal and is configured to generate a first count corresponding to a first frequency of a first reduced clock signal corresponding to the DCO clock signal. A second counting path receives the DCO clock signal and generates a second count corresponding to a second frequency of a second reduced clock signal corresponding to the DCO clock signal. The first reduced clock signal is an integer multiple frequency of the second reduced clock signal. Detection circuitry detects a timing violation associated with the DCO clock signal based on a comparison between at least a portion of the first count and at least a portion of the second count. 1. A frequency counter circuit , comprising:a first counter path to receive a digitally-controlled oscillator (DCO) clock signal and to generate a first count corresponding to a first frequency of a first reduced clock signal corresponding to the DCO clock signal;a second counting path to receive the DCO clock signal and to generate a second count corresponding to a second frequency of a second reduced clock signal corresponding to the DCO clock signal, wherein the first reduced clock signal is an integer multiple frequency of the second reduced clock signal; anddetection circuitry to detect a timing violation associated with the DCO clock signal based on a comparison between at least a portion of the first count and at least a portion of the second count.2. The frequency counter circuit of claim 1 , wherein the first counter path includes:a first pre-divider circuit having a divider ratio of N to receive the DCO clock signal and generate the first reduced clock signal with a frequency of 1/N the frequency of the DCO clock signal;a first counter for counting rising edges of the first reduced clock signal over a measurement interval; anda first k-bit register for storing the first count for comparison to the second count by ...

SIGNAL INSPECTION APPARATUS, SIGNAL INSPECTION SYSTEM, SIGNAL INSPECTION METHOD, AND NON-TRANSITORY COMPUTER-READABLE MEDIUM ENCODED WITH SIGNAL INSPECTION PROGRAM

A signal inspection apparatus, a signal inspection system, a signal inspection method, and a non-transitory computer-readable medium encoded with a signal inspection program are provided, all of which can appropriately detect discrepancy between multiplexed signals. A signal inspection apparatus includes: an acquisition unit that acquires values of at least two signals among multiplexed signals in a predetermined cycle; a count unit that counts respective changes in the at least two signals in a predetermined time frame; a calculation unit that calculates a difference between the counts of changes; and an output unit that performs an output indicating discrepancy between the signals, if the difference between the counts of changes exceeds an allowable value. 1. A signal inspection apparatus , comprising:an acquisition unit that acquires values of at least two signals among multiplexed signals in a predetermined cycle;a count unit that counts respective changes in the at least two signals in a predetermined time frame;a calculation unit that calculates a difference between the counts of changes in the at least two signals; andan output unit that performs an output indicating discrepancy between the at least two signals, if the difference between the counts of changes exceeds an allowable value.2. The signal inspection apparatus according to claim 1 , wherein the count unit starts counting afresh after the predetermined time frame elapses.3. The signal inspection apparatus according to claim 1 , wherein the count unit counts respective changes in the at least two signals in the latest predetermined time frame claim 1 , in each of the predetermined cycle.4. The signal inspection apparatus according to claim 1 , wherein the output unit performs an output indicating a signal having a higher count of changes than others.5. A signal inspection system claim 1 , comprising a plurality of the signal inspection apparatuses according to claim 1 , respectively corresponding to ...

METHOD, CIRCUIT AND INTEGRATED CIRCUIT FOR DETECTING RESONANCE FREQUENCY

A method, circuit, and integrated circuit for detecting resonance frequency is disclosed in which a first operational amplifier circuit receives an input signal and provides an output signal for a resonance circuit to store energy, a zero crossing comparator circuit samples a discharge current of the resonance circuit and transforms the sampled current into a sampled voltage and outputs a square signal to a digital signal processor based on the sampled voltage, and the digital signal processor obtains a resonance frequency based on the square signal. 1. A resonance frequency detection circuit , comprising:a first operational amplifier circuit;a resonance circuit;a zero crossing comparator circuit; anda digital signal processor,wherein the first operational amplifier circuit is configured to receive an input signal and to provide an output signal for the resonance circuit to store energy,wherein the resonance circuit is configured to store energy based on the output signal of the first operational amplifier circuit, and to discharge after the input signal is disabled,wherein the zero crossing comparator circuit is configured to sample a discharge current of the resonance circuit after the input signal is disabled, to transform the sampled discharge current to a sampled voltage, and to output a square signal to the digital signal processor based on variation of the sampled voltage, andwherein the digital signal processor is configured to obtain a resonance frequency based on the square signal.2. The circuit according to claim 1 , wherein the digital signal processor is configured to: determine a portion of the square signal corresponding to a first cycle; and', 'calculate, based on a clock frequency, a cycle period of the portion as the cycle period of the square signal; or wherein the digital signal processor is configured to:', 'determine a first portion of the square signal corresponding to the first cycle and a second portion of the square signal corresponding to ...

Analog signal detecting circuit

The analog signal detecting circuit comprises a reference voltage generator that outputs a plurality of reference voltages, the number of the reference voltages being varied depending on a voltage width between a minimum voltage value and a maximum voltage value of an analog signal; a plurality of comparators that compares a voltage of the analog signal with each of the plurality of reference voltages output from the reference voltage generator; a plurality of pulse generators that outputs a plurality of pulse signals having widths among the plurality of pulse signals varied depending on a frequency of the analog signal; and a combiner circuit section that outputs the pulse signals from the plurality of pulse generators by summing up.

METHOD AND APPARATUS FOR DETERMINING CHARACTERISTICS OF AN INPUT SIGNAL

Aspects are directed to systems and methods of determining a value of a characteristic related to timing between sequential events of an input electronic signal using an input capture counter having a maximum counting value, the input electronic signal having an expected variable period between events whose value is between a maximum period value and a minimum period value with a delta period value equal to a difference between the maximum period value and the minimum period value.

一种测频系统及其测频方法

本发明涉及一种测频系统及其测频方法，系统包括待测信号滤波模块、锁存和清零信号产生模块、整周期计数器模块、填充脉冲计数器模块和计数锁存模块；待测信号滤波模块用于对待测信号进行滤波处理；锁存和清零信号产生模块用于产生定时锁存信号和定时清零信号；整周期计数器模块用于对整周期待测信号脉冲计数并将所得值发送给计数锁存模块；填充脉冲计数器模块用于对与非整周期待测信号对应时间内的高频填充脉冲计数并将所得值发送给计数锁存模块；计数锁存模块用于接收整周期计数器模块所发送的计数值并存储，还用于接收填充脉冲计数器模块所发送的计数值并处理和存储。本发明解决了现有技术中测频结果跳动误差大的问题，提高了频率测量的准确度。

Method of frequency measurement

FIELD: measuring equipment. SUBSTANCE: level of the relative maximum discretization method error is set. The pulses of the measured and reference frequencies with a given duration are generated. The number of pulses of the measured and reference frequencies is calculated for the time interval between the time of coincidence of the pulses of the measured and the reference frequencies. In this case, the first frequency measurement is performed with a predetermined value of the pulse duration of the reference frequency, and subsequent frequency measurements are performed with a pulse duration of the reference frequency, which is set in accordance with the expression: where τ 0 is duration of generated pulses; γ - the level of the relative maximum discretization method error; T x is the period of the measured frequency measured for the previous measurement; P (n) is the numerical coefficient (0.2 is adopted). EFFECT: reducing the frequency measurement time. 2 dwg РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 2 638 972 C2 (51) МПК G01R 23/10 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ОПИСАНИЕ ИЗОБРЕТЕНИЯ К ПАТЕНТУ (21)(22) Заявка: 2016122825, 08.06.2016 (24) Дата начала отсчета срока действия патента: 08.06.2016 Дата регистрации: Приоритет(ы): (22) Дата подачи заявки: 08.06.2016 (43) Дата публикации заявки: 13.12.2017 Бюл. № 35 R U (54) СПОСОБ ИЗМЕРЕНИЯ ЧАСТОТЫ (57) Реферат: Изобретение относится к области измерительной техники и может быть использовано для измерения частоты периодических сигналов. Способ измерения частоты заключается в том, что задают уровень относительной максимальной методической погрешности дискретизации. Формируют импульсы измеряемой и образцовой частот с заданной длительностью. Подсчитывают число импульсов измеряемой и образцовой частот за интервал времени между моментами совпадения импульсов измеряемой и образцовой частот. При этом первое измерение частоты выполняют с заданным значением длительности импульсов образцовой частоты, ...

自适应周期的频率测量系统与方法

一种自适应周期的频率测量系统与方法，包括频率测量接口、滤波与整形模块、信号测量模块、高稳温补晶振以及通信模块与接口。其中，频率测量接口用于输入被测信号；滤波与整形模块用于滤除测量范围外的干扰信号，并将滤除后的信号转化为方波信号；信号测量模块，用于捕获方波信号的信号边沿，进行脉冲计数和频率计算，采样信号周期数根据被测信号频率进行动态适应调节；以及通信模块与接口，用于传输频率数据。本发明的自适应周期的频率测量系统采用多周期同步频率测量方法对待测信号进行采样测量，采样信号周期数根据信号频率进行动态适应调节，在保证测量精度与响应速度的同时拓展系统测频范围。

マイクロコンピユ−タを用いたパルス周期測定方式

(57)【要約】本公報は電子出願前の出願データであるた め要約のデータは記録されません。

一种测频系统及其测频方法

本发明涉及一种测频系统及其测频方法，系统包括待测信号滤波模块、锁存和清零信号产生模块、整周期计数器模块、填充脉冲计数器模块和计数锁存模块；待测信号滤波模块用于对待测信号进行滤波处理；锁存和清零信号产生模块用于产生定时锁存信号和定时清零信号；整周期计数器模块用于对整周期待测信号脉冲计数并将所得值发送给计数锁存模块；填充脉冲计数器模块用于对与非整周期待测信号对应时间内的高频填充脉冲计数并将所得值发送给计数锁存模块；计数锁存模块用于接收整周期计数器模块所发送的计数值并存储，还用于接收填充脉冲计数器模块所发送的计数值并处理和存储。本发明解决了现有技术中测频结果跳动误差大的问题，提高了频率测量的准确度。

可选择性输出脉冲信号频率与计数的测量系统、测量方法

本发明属于脉冲信号采集处理的技术领域，为了解决现有技术中脉冲信号测量功能单一和对硬件要求高的技术问题，提供一种可选择性输出脉冲信号频率与计数的测量系统、测量方法；所述测量系统包括：控制指令接收模块，设置成能够接收输出脉冲信号频率或输出脉冲信号计数指令；数据处理模块，设置成获取预定数量的数据包对应的计数值；当接收到需要输出脉冲信号计数指令时，按照第一预定算法计算脉冲信号计数值Z；当接收到需要输出脉冲信号频率指令时，按照第二预定算法计算当前脉冲信号频率F；其中，当所述预定数量包的个数N，第n个数据包的计数值为Cn，N和n分别为正整数；并且：第一预定算法为：Z n ＝C n ‑C n‑1 ；第二预定算法为：

Frequency measuring system

一种基于时频信息测量的高精度频标比对系统及比对方法

本发明提供了一种基于时频信息测量的高精度频标比对系统及比对方法，包括依次连接的频率标准模块、频标脉冲信号模块、可调时延模块、相位检测模块、闸门生成模块、时间间隔测量模块、数据处理模块和显示模块，频标脉冲信号模块的信号输出端还与时间间隔测量模块的信号输入端连接，还包括被测频率模块和被测脉冲信号模块，被测脉冲信号模块的信号输出端与相位检测模块和时间间隔测量模块的信号输入端均连接；本发明避免了传统频标比对方法中频率的归一化处理，利用FPGA技术克服了附加噪声的影响，使系统的鲁棒性得到了进一步加强；本发明实现了射频范围内任意频率关系的快速直接相位测量，加快了频标比对的速度。

Способ измерения частоты

А 2016122825 ко РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) аа 43 2 03) А УХ (11) э ВО к. а ЗА а а (51) МПК СИЮ 23/10 (2006.0Т) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ЗАЯВКА НА ИЗОБРЕТЕНИЕ (21)(22) Заявка: 2016122825, 08.06.2016 (71) Заявитель(и): Федеральное государственное бюджетное образовательное учреждение высшего образования "Новосибирский (43) Дата публикации заявки: 13.12.2017 Бюл. № 35 государственный технический университет" (ВО) Приоритет(ы): (22) Дата подачи заявки: 08.06.2016 Адрес для переписки: 630073, г. Новосибирск 73, пр. К. Маркса, 20, (72) Автор(ы): ФГБОУ ВО НГТУ Лаптев Дмитрий Владимирович (КО), Пасынков Юрий Алексеевич (КО) (54) СПОСОБ ИЗМЕРЕНИЯ ЧАСТОТЫ (57) Формула изобретения Способ измерения частоты, заключающийся в том, что задают уровень относительной максимальной методической погрешности дискретизации, формируют импульсы измеряемой и образцовой частот с заданной длительностью, подсчитывают число импульсов измеряемой и образцовой частот за интервал времени между моментами совпадения импульсов измеряемой и образцовой частот, отличающийся тем, что первое измерение частоты выполняют с заданным значением длительности импульсов образцовой частоты, последующие измерения частоты выполняют с длительностью импульсов образцовой частоты, которую задают в соответствии с выражением: =/-7-Т, в -Р()}, где то - длительность формируемых импульсов; у - уровень относительной максимальной методической погрешности дискретизации; Тх - период измеряемой частоты, измеренный за предыдущее измерение; Р(п) - числовой коэффициент (принят 0,2). Стр.: 1 па 986191 0СсС У

Precision digital frequency meter

FIELD: measuring equipment.SUBSTANCE: invention relates to measurement technology and can be used in radio engineering, electrical engineering, metrology and other industries for precision measurement of the frequency of sinusoidal signals, frequency and phase deviations from the nominal value, time intervals, as well as to obtain statistical parameters characterizing the frequency stability for different periods of time. Precision digital frequency meter is proposed, which includes an input shaper of rectangular signals, a phase detector, a frequency comparator, a synthesizer equipped with a shaper of rectangular signals, a generator of exemplary frequency, the first analog-to-digital converter, a microcontroller, an information processing, indication and control unit, which further comprises a second high-frequency analog-to-digital converter, a random access memory and a means of controlling an operational memory.EFFECT: technical result of the implementation of the claimed solution is the creation of a digital frequency meter having an increased accuracy of single phase and phase noise measurements, as well as an increased frequency measurement accuracy.4 cl, 4 dwg РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 2 679 930 C1 (51) МПК G01R 23/02 (2006.01) G01R 23/10 (2006.01) H04L 27/26 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ОПИСАНИЕ ИЗОБРЕТЕНИЯ К ПАТЕНТУ (52) СПК G01R 23/02 (2018.08); G01R 23/10 (2018.08); H04L 27/26 (2018.08) (21)(22) Заявка: 2018104030, 01.02.2018 (24) Дата начала отсчета срока действия патента: (73) Патентообладатель(и): Федеральное государственное бюджетное учреждение науки Институт лазерной физики Сибирского отделения Российской академии наук (RU) Дата регистрации: 14.02.2019 (56) Список документов, цитированных в отчете о поиске: RU 2617172 C1, 21.04.2017. RU (45) Опубликовано: 14.02.2019 Бюл. № 5 2585513 C1 C1, 27.05.2016. Статья: "Прецизионный частотомер для фундаментальной метрологии", Ж. АВТОМАТИКА И ПРОГРАММНАЯ ...

DIFFERENTIAL MEASURING CONVERTER

РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 2017 144 395 A (51) МПК H03K 5/00 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ЗАЯВКА НА ИЗОБРЕТЕНИЕ (21)(22) Заявка: 2017144395, 18.12.2017 Приоритет(ы): (22) Дата подачи заявки: 18.12.2017 (43) Дата публикации заявки: 18.06.2019 Бюл. № 17 R U (57) Формула изобретения Дифференциальный измерительный преобразователь, содержащий два генератора частотных сигналов с частотозадающими элементами, выходы которых соединены со входами формирователя сигналов разностной частоты, отличающийся тем, что дополнительно введены генератор опорной частоты, блок управления и последовательно соединенные формирователь временного интервала, элемент квантования, счетчик числа импульсов и устройство сравнения кода, выход которого является первым выходом устройства, группа входов которого является первой группой входов устройства сравнения кода, а вторая группа входов устройства сравнения кода соединена с группой выходов счетчика числа импульсов, при этом второй вход элемента квантования соединен с выходом генератора опорной частоты, первый вход формирователя временного интервала соединен с выходом блока управления, вход которого является пусковым входом устройства, а второй вход формирователя временного интервала соединен с выходом формирователя сигналов разностной частоты непосредственно или через блок нормирования частоты и является вторым выходом устройства. Стр.: 1 A 2 0 1 7 1 4 4 3 9 5 A (54) ДИФФЕРЕНЦИАЛЬНЫЙ ИЗМЕРИТЕЛЬНЫЙ ПРЕОБРАЗОВАТЕЛЬ 2 0 1 7 1 4 4 3 9 5 (72) Автор(ы): Хозинский Вячеслав Владимирович (RU), Верещагин Александр Иванович (RU) R U Адрес для переписки: 607188, Нижегородская обл., г. Саров, пр. Мира, 37, ФГУП "РФЯЦ-ВНИИЭФ", зам. директора Департамента инновационно-проектной деятельности и корпоративного управленияначальнику УИСНТИ В.Е.Миронову (71) Заявитель(и): Российская Федерация, от имени которой выступает Государственная корпорация по атомной энергии "Росатом" (RU), Федеральное государственное унитарное ...

Phase measuring device and frequency measuring device

Method and system for measuring frequency

本发明公开一种频率量测方法及系统，利用参考信号以及与待测信号同步的频率屏蔽取得待测信号的频率的周期数，基于该周期数可取得该待测信号的频率值，同时利用基于该参考信号而产生的多个相位移信号来修正前述的频率值，并可随着相位移信号数量的增加而将误差进一步地缩小，进而可得到准确的待测信号的频率值，且具有量测速度快、占用电路面积小的优点。

Phase determining device and frequency determining device

디지털 회로를 이용해 위상차를 고정밀도로 계측할 수 있는 위상 측정 장치를 실현한다. 　위상 측정 장치(1)는, 각각 TDC를 이용한 버퍼 지연 측정 회로(110)와 위상차 측정 회로(120), 및 위상차 연산부(12)를 구비한다. 버퍼 지연 측정 회로(110)는, TDC의 각 버퍼 간의 지연량 τB를 나타내는 지연 측정용 데이터 Ds를 고정밀도의 클록 신호 CLK와 샘플링 기준 신호 SCL로부터 생성한다. 위상차 측정 회로(120)는, 피측정 대상 신호 SS(A), SS(B)의 위상차를 나타내는 개수 데이터열 Dt, 제1, 제2 위상차 측정용 데이터 Ds(A), Ds(B)를, 상기 클록 신호 CLK를 이용해 생성한다. 위상차 연산부(12)는, 제1, 제2 위상차 측정용 데이터 Ds(A), Ds(B)에 근거하는 상태 데이터수 NB(A), NB(B)와 개수 데이터열 Dt와 지연 측정용 데이터 Ds로부터 얻을 수 있는 고정밀도의 지연량 τB를 이용해 위상차를 산출한다. A phase measurement device capable of measuring the phase difference with high precision using a digital circuit is realized. The phase measuring apparatus 1 includes a buffer delay measuring circuit 110, a phase difference measuring circuit 120, and a phase difference calculating unit 12 using TDC. The buffer delay measurement circuit 110 generates the delay measurement data Ds representing the delay amount? B between buffers of the TDC from the clock signal CLK and the sampling reference signal SCL with high accuracy. The phase difference measuring circuit 120 outputs the number data string Dt and the first and second phase difference measurement data Ds (A) and Ds (B) indicating the phase difference of the signals SS (A) And generates it using the clock signal CLK. The phase difference calculating section 12 calculates the phase difference between the number NB (A), NB (B) of state data based on the first and second phase difference measurement data Ds (A) and Ds The phase difference is calculated by using the high-precision delay amount? B obtained from Ds.

Clock frequency detection circuit

本发明公开了一种时钟频率检测电路。首先，待测时钟通过分频单元1，分频后经过同步单元同步到高频单元分频后的时钟域；其次，经过上升沿产生单元得到脉冲信号；然后，将高频时钟单元产生的高频时钟经过分频单元2得到标尺时钟，经过标尺计数单元计数，储存到计数值存储单元；最后计数值单元存储的标尺计数值分别与期望值对比，分别将结果输出。利用本发明，解决模拟电路检测时钟电路复杂，可配置性低、不灵活的缺点。

Time interval measuring instrument with parallel structure

본 발명은 시간간격 측정기는 일반적인 지연기 및 카운터 다수개를 병렬로 구성함으로서 보다 정밀하게 동작할 수 있고, 또한 고속으로 동작하는 카운터를 사용하지 않으므로서 가격 또한 저렴한데, 카운터를 사용하지 않으므로서 가격 또한 저렴한데, 기설정된 주기(T) 마다 클럭신호(CLK)를 출력하는 클럭부와, N-1개의 지연기를 가지며, 상기 지연기 각각은 선형하는 지연기로부터 입력되는 클럭 신호를 상기 기설정된 주기(T)/N만큼 지연시킨 후 출력하되, 첫번째 지연기(101)는 상기 클럭부로부터 클럭신호(CLK)를 입력받는 지연부(100)와, N개의 카운터를 가지며, 사기 카운터 각각은 인에이블(Enable) 단자로 입력신호(I)가 제공되는 동안, 대응되는 상기 지연기로부터 제공되는 클럭신호에 응답하여 카운팅을 수행하고, 상기 인에이블 단자로 입력신호(I) 제공이 종료될 때 상기 카운팅 결과값을 출력하의, 첫번째 카운터(201)는 상기 클럭부로부터 제공되는 클럭신호(CLK)에 응답하여 카운팅을 수행하는 카운팅부(200)와, 입력신호(I)를 제공받고, 상기 N개의 카운터 각각으로 카운팅값을 입력받으며, 상기 입력신호(I)의 제공이 종료될 때, 상기 입력신호(I)가 제공된 시간간격(D)을 기설정된 계산식에 따라서 계산하여 출력하되, 상기 기설정된 계산식은D=(n-1)*T+a*T/N이며, 상기 n은 상기 카운팅부(200)로부터 제공된 카운팅값 중 가상 큰 값이고, 상기 a는 상기 카운터 N개중 상기 n카운팅 값을 출력한 카운터의 갯수인 산술논리부(300)를 포함하며, 상기 N은 임의의 양의 정수이다.

A kind of high-precision fast frequency meter

本发明公开了一种高精度快速频率计，其特征在于，包括显示模块、计算模块、FPGA控制模块、低端频率信号放大整形电路、高端频率信号分频电路和时钟模块；其中，高端频率信号分频电路，用于对待测频率信号进行隔直和分频处理后，输出CMOS电平信号到控制模块；低端频率信号放大整形电路，用于对待测频率信号进行隔直、放大整形后输出LVDS电平信号到FPGA控制模块；FPGA控制模块，用于根据时基信号产生计数脉冲对信号进行计数；计算模块，用于计算出由相邻两次计数脉冲上升沿和电平信号上升沿之间的时间间隔引起的计数误差发送给控制模块；控制模块根据所述计数结果、计数误差计算出待测频率信号的频率发送给显示模块进行显示。

Analog signal detection circuit

模拟信号检测电路包括：参考电压发生器，其输出多个参考电压，参考电压的数量取决于模拟信号的最小电压值与最大电压值之间的电压宽度而变化；多个比较器，其将模拟信号的电压与从参考电压发生器输出的多个参考电压中的每个参考电压进行比较；多个脉冲发生器，其输出多个脉冲信号，多个脉冲信号具有取决于模拟信号的频率在多个脉冲信号中变化的宽度；以及组合器电路部分，其通过求和来输出来自多个脉冲发生器的脉冲信号。

Frequency lock detector

1. 청구범위에 기재된 발명이 속한 기술분야 1. TECHNICAL FIELD OF THE INVENTION 본 발명은 주파수 락 검출기(Frequency lock detector)에 관한 것임. The present invention relates to a frequency lock detector. 2. 발명이 해결하려고 하는 기술적 과제 2. The technical problem to be solved by the invention 본 발명은 위상이 동기가 되지 않은 두 클럭 신호의 주파수를 비교하여 주파수 락을 판별하는데 있어, 원하는 주파수 정확도가 매우 높을 경우에 복잡도가 카운트 횟수(N)에 따라 증가하는 두 개의 카운터를 사용하는 종래 기술과 달리, 하나의 카운터와 복잡도가 카운트 횟수(N)에 따라 증가하지 않는 클럭 개수의 차이를 검출하는 클럭 개수 차이 검출부를 이용하여 집적화가 용이한 주파수 락 검출기를 제공하는데 그 목적이 있음. The present invention compares the frequencies of two clock signals whose phases are not synchronized to determine a frequency lock. In the case where the desired frequency accuracy is very high, the conventional method uses two counters whose complexity increases with the number of counts (N). Unlike the technology, an object of the present invention is to provide a frequency lock detector that is easy to integrate by using a counter and a clock number difference detector that detects a difference in the number of clocks whose complexity does not increase with the number of counts (N). 3. 발명의 해결방법의 요지 3. Summary of Solution to Invention 본 발명은, 주파수 락 검출기에 있어서, 외부로부터 기준 클럭 신호를 입력받아 기준 클럭 신호의 클럭 개수를 카운트하기 위한 카운터; 상기 외부로부터 입력받은 기준 클럭 신호와, 상기 기준 클럭 신호와 서로 위상이 동기되지 않은 복원된 클럭 신호의 클럭 개수 차이를 검출하기 위한 클럭 개수 차이 검출부; 및 상기 카운터와 상기 클럭 개수 차이 검출부의 결과값을 이용하여 주파수 락을 판별하기 위한 락 판별부를 포함한다. The present invention provides a frequency lock detector comprising: a counter for receiving a reference clock signal from an external source and counting the number of clocks of the reference clock signal; A clock number difference detector for detecting a clock number difference between the reference clock signal received from the outside and a restored clock signal whose phase is not synchronized with the reference clock signal; And a lock determination unit for determining a frequency lock by using a result value of the counter and the clock number difference detection unit. 4. 발명의 중요한 용도 4. Important uses of the invention ...

Symbol edge and frequency estimation method and system suitable for multi-mode modulation system

一种适用于多模调制体制的符号边沿与频率估计方法与系统，包括：对混频解扩后的数字中频信号进行多个延时时长的延时，获得多个符号边沿估计支路的符号边沿延时信号，并对其进行短时积分运算获得短时积分结果；对各短时积分结果进行补零快速傅里叶变换，并对获得的各瞬时频率等效相干积分值进行加权运算，获得各基础运算结果；分别对各基础运算结果进行所有符号组合与瞬时频率二维峰值的快速搜索，获得各符号边沿的剥离调制信息后的各瞬时频率等效相干积分值；基于各瞬时频率等效相干积分值获取边沿参数和频率参数；进行频率插值估计获得频率估计值；在门限判决有效时计算伪码多普勒频率估计值。本实施例实现符号边沿和高精度频率估计。

Test circuit for clock generation circuit

Frequency meter

Изобретение относится к области радиотехники, в частности к средствам оценивания статистических характеристик обнаружения радиосигналов, и может быть использовано для измерения частоты появления сигналов радиоэлектронных средств, а также проведения экспериментальных исследований. Технический результат - повышение точности измерения числа импульсов апериодической входной последовательности импульсов за счет стробирования входной апериодической последовательностью импульсов последовательности импульсов опорной частоты. Указанный результат достигается за счет того, что частотомер содержит генератор сигнала опорной частоты, счетчик-делитель с внешним сбросом, схему управления с внешним сбросом, два селектора, счетчик импульсов с внешним сбросом, индикатор датчик режима и ключ. Перечисленные средства определенным образом соединены между собой и обеспечивают функционирование частотомера в двух режимах – в режиме измерения числа периодических импульсов и в режиме измерения числа апериодических импульсов за калиброванный интервал времени. 1 ил. РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 2 673 240 C1 (51) МПК G01S 7/292 (2006.01) G01R 23/10 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ОПИСАНИЕ ИЗОБРЕТЕНИЯ К ПАТЕНТУ (52) СПК G01S 7/292 (2006.01); G01S 7/41 (2006.01); G01S 13/16 (2006.01); G01R 23/02 (2006.01); G01R 23/10 (2006.01) (21)(22) Заявка: 2017121555, 19.06.2017 19.06.2017 Дата регистрации: 23.11.2018 (45) Опубликовано: 23.11.2018 Бюл. № 33 Адрес для переписки: 394064, г. Воронеж, ул. Старых Большевиков, 54а, ВУНЦ ВВС "ВВА", Центр ОНР и ПНПК 2 6 7 3 2 4 0 C 1 (56) Список документов, цитированных в отчете о поиске: RU 169440 U1, 17.03.2017. RU 2047866 C1, 10.11.1995. RU 2278390 C1, 20.06.2006. RU 2153680 C1, 27.07.2000. JP 2007298317 A, 15.11.2007. WO 2007090730 A1, 16.08.2007. JP 2002303645 A, 18.10.2002. WO 1997042518 A1, 13.11.1997. (54) ЧАСТОТОМЕР (57) Реферат: Изобретение относится к области радиотехники, в частности к средствам оценивания ...

Device of generating digital signal representing input pulse frequency

Time measurement system and its measurement method

FPGA-based frequency meter and frequency measuring method

本申请一种基于FGPA的频率计及频率测量方法，其中，所述频率计包括：时钟源、上位机、分频整形单元及处理单元；所述频率计通过利用处理单元在所述分频信号的各个周期内对与分频信号上升沿相对应的待测信号上升沿进行一次粗时间测量获得第一时间值；并利用处理单元对与分频信号上升沿相对应的待测信号上升沿在所述分频信号的各个周期内进行多次细时间测量，对所述第一时间值及多次细时间测量的测量结果进行处理并结合所述第一分频倍数和所述第二分频倍数计算获得所述外界原始信号的频率。由于在整个外界原始信号的频率测量过程中进行了多次细时间测量，降低了细时间测量的误差，提高了所述频率计对外界原始信号频率的测量精度。

Frequency measuring circuit

Phase and frequency detector with high resolution

A phase detector for measuring phase differences between K input signals is provided. The phase detector includes a counter, K first registers and a first subtractor. Each first register receives the counter signal of the counter and a respective input signal for updating a counter value in response to timing information on the input signal. The first subtractor receives the counter values to generate phase difference representing values. A frequency detector is also provided. The first subtractor is substituted by a second subtractor and K second registers are included. Each second register is connected to a respective first register. Each second register receives the counter value of its first register and the same input signal as that of its first register for backing-up the counter value as a back-up counter value in response to the timing information on the input signal. The second subtractor subtracts, for each second register and its first register, the counter values thereof to generate a frequency representing value.

Frequency measuring device and electronic device

Apparatus and method for improving the resolution with which a test signal is counted

Apparatus and method for counting frequency of a signal with improved resolution. Frequency counters (10, 60, and 100) accumulate clock cycles from a reference oscillator (20) during a sample interval. In the simplest form of the frequency counter, the reference clock signal is inverted and both the noninverted and inverted clock cycles are accumulated in separate counters (40 and 44). The accumulated counts are totaled in a summing circuit (48) and divided by two to determine their average, thereby doubling the resolution of the frequency counter. A more complex embodiment of the invention corrects a raw count of cycles of an input signal (12) that are accumulated during an extended sample interval defined by successive rising edges of a sample signal (114). The fractional portion of a cycle of the input waveform that occurred prior to the beginning of the extended sample interval is added to the raw count and the fractional portion of the input waveform that occurred after the end of the extended sample interval is subtracted. These fractional portions are defined as ratios of a partial count of clock cycles to a full count of clock cycled. The partial count is the number of clock cycles occurring between a rising edge of the sample signal and the next rising edge of the input signal, while the full count is the number of clock cycles occurring between successive rising edges of the input signal. One-half clock logic circuits (126 and 136) double the resolution of the counts accumulated by a partial counter (122) and a full counter (142), thereby doubling the resolution with which the ratios of the two counts are determined.

Differential measuring transducer

Изобретение относится к области измерительной техники, а именно к измерительным преобразователям с частотной формой выходных сигналов. Техническим результатом является обеспечение проверки работоспособности частотозадающих элементов и всего измерительного преобразователя по значению выходной частоты. Устройство содержит два генератора частотных сигналов с частотозадающими элементами, формирователь сигналов разностной частоты, генератор опорной частоты, блок управления, формирователь временного интервала, элемент квантования, счетчик числа импульсов, устройство сравнения кода, блок нормирования частоты. 1 ил. РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 2 699 255 C2 (51) МПК H03K 5/19 (2006.01) G01R 23/10 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ОПИСАНИЕ ИЗОБРЕТЕНИЯ К ПАТЕНТУ (52) СПК H03K 5/19 (2019.05); G01R 23/10 (2019.05) (21)(22) Заявка: 2017144395, 18.12.2017 (24) Дата начала отсчета срока действия патента: Дата регистрации: 04.09.2019 (43) Дата публикации заявки: 18.06.2019 Бюл. № 17 (56) Список документов, цитированных в отчете о поиске: RU 2432671 C1, 27.10.2011. RU 2566333 C1, 20.10.2015. RU 2280946 C1, 27.07.2006. RU 2068216 C1, 20.10.1996. SU 879333 A1, 07.11.1981. US 5123035 A, 16.06.1992. EP 0101669 A2, 29.02.1984. (54) ДИФФЕРЕНЦИАЛЬНЫЙ ИЗМЕРИТЕЛЬНЫЙ ПРЕОБРАЗОВАТЕЛЬ (57) Реферат: Изобретение относится к области содержит два генератора частотных сигналов с измерительной техники, а именно к частотозадающими элементами, формирователь измерительным преобразователям с частотной сигналов разностной частоты, генератор опорной формой выходных сигналов. Техническим частоты, блок управления, формирователь результатом является обеспечение проверки временного интервала, элемент квантования, работоспособности частотозадающих элементов счетчик числа импульсов, устройство сравнения и всего измерительного преобразователя по кода, блок нормирования частоты. 1 ил. значению выходной частоты. Устройство R U 2 6 9 9 2 5 5 Адрес для переписки: 607188, ...

Frequency sensing device

본 발명은 소정 주파수의 클럭 신호에 의해 동작하는 하드웨어 장치의 안전한 동작과 시스템의 신뢰성을 구축하기 위하여 상기 클럭 신호의 주파수의 이상을 탐지하는 주파수 센싱 장치에 관한 것으로서, 상기 장치는, 판별 대상인 클럭 신호의 적분 전압으로부터 상기 클럭 신호가 정상 주파수 범위보다 낮은 지를 감지하며, 상기 클럭 신호의 적분 전압의 비교 신호의 미분 전압으로부터 상기 클럭 신호가 정상 주파수 범위보다 높은 지의 여부를 감지하도록 구성된다. The present invention relates to a frequency sensing device that detects an abnormality of a frequency of the clock signal in order to establish a safe operation of a hardware device operating by a clock signal of a predetermined frequency and the reliability of the system. Detect whether the clock signal is lower than the normal frequency range from an integral voltage of and detect whether the clock signal is higher than the normal frequency range from the differential voltage of the comparison signal of the integrated voltage of the clock signal. 클럭, 주파수 이상, 적분기, 미분기 Clock, Frequency Abnormal, Integrator, Differentiator

Online steel wire shake early warning system and method

本发明提供一种在线钢丝抖动预警系统及方法，将检测导体和钢丝与检测电路的两个电极连接，使检测导体的触头与钢丝接触使电路接通；启动机器，钢丝绕过支撑导向轮进行输送，正常情况下钢丝无明显抖动，检测导体与钢丝之间是连通的，此时检测电路检测到两个电极是相通的；当钢丝抖动时，由于检测导体的下方为活动端，故检测导体也会产生抖动，这样检测导体与钢丝就会不断的产生通‑断‑通‑断的脉冲信号，所述脉冲信号被检测电路检测并计数，根据计数的多少就能评估出钢丝的抖动情况。

Measuring device for frequency

Arc Signal Detection Method Using Logistic Regression

본 발명은 아크신호를 인공신경망을 이용하여 검출하는 방법에 관한 것으로서, 전기회로로부터 검출되는 시계열 신호를 입력 받고, 로지스틱 회귀 분석을 이용하여 상기 시계열 신호를 학습하여 학습에 의해 갱신되는 최종 회귀 파라미터와 주파수 대역 중에서 아크신호 분류성능이 가장 높은 최적 대역폭을 추출하여 제공하는 신경망 학습 단계(100) 및 상기 시계열 신호, 상기 최종 회귀 파라미터 및 상기 최적 대역폭을 입력 받아 상기 로지스틱 회귀분석을 이용하여 상기 시계열 신호가 아크신호인지 여부를 판단하는 아크신호 검출단계(200)를 포함한다. 본 발명의 일 실시 예에 따르면, 신경망 모델의 계산 복잡도를 낮추어 아크신호 검출에 소요되는 시간을 줄임과 동시에 단말기에의 적용이 가능하다.

Frequency detection circuit

본 발명은 디지털 시스템에 이용되는 주파수 검출회로에 관한 것으로, 특히 지연소자를 이용하여 디지털 클럭의 주파수를 검출하는 회로에 관한 것이다. 상기의 주파수 검출회는, 시스템 클럭을 입력하여 미리 설정된 제1필터링 주기보다 더 높은 주파수를 필터링하여 미리 설정된 제1필터링 주기의 주파수를 갖는 클럭으로 출력하는 주파수 필터링 수단과, 상기 제1주파수 필터링 수단으로부터 출력되는 클럭을 입력하여 미리 설정된 제2 필터링 주기보다 더 낮은 주파수를 검출하여 클럭 에러검출신호를 발생하는 주파수 검출수단과, 상기 주파수 검출수단으로부터 출력되는 에러검출신호를 래치하여 경보신호를 발생하고, 클리어 신호에 응답하여 상기 경보신호를 차단하는 경보 발생수단으로 구성된다.

Pulse signal measurement device

A kind of frequency measurement method and associated component of input signal

本申请公开了一种输入信号的频率测量方法，应用于计量芯片，包括：获取MCU发出的通信帧；利用所述通信帧确定RCH时钟频率；以所述RCH时钟频率作为采样频率，对所述输入信号进行采样并计算，得到所述输入信号的频率。其中，MCU发出的通信帧以MCU的晶振作为恒定时钟源，根据该通信帧计算RCH时钟频率，进而已知RCH时钟频率来计算输入信号的频率，整个过程中始终以MCU的晶振作为标准恒定的频率依据，即使RCH时钟频率受到温度时间的影响，本发明依然可以准确计算出输入信号的频率。相应的，本申请还公开了具有相应有益效果的一种输入信号的频率测量系统、一种无功功率测量方法、系统和一种计量芯片。

Frequency dividing detector for low-frequency electromagnetic vibration table system feedback control

本发明公开了用于低频电磁振动台系统反馈控制的分频检测器，分频检测器由依次连接的比较器，计数器和频率控制器组成，驱动振动台系统的系统输入信号和参考输入信号共同输入比较器，比较器输出由系统输入信号和参考输入信号形成的方波信号，方波信号与已知频率的脉冲信号共同输入计数器，计数器给出系统输入信号周期数N f 和已知频率的脉冲信号的周期数N s 、并将系统输入信号周期数和参考输入信号周期数输入频率控制器，频率控制器计算获得方波信号的频率值f f ， 其中f s 表示已知频率的脉冲信号的频率值。本发明能够识别振动台当前的工作频率，并且运动控制精度高。

Measuring apparatus for input signal frequency in computer system

A time interval measurement system and a method applied therein

반도체의 주파수 한계 이상의 정확도로 개개의 시 간격을 측정하기 위해, 본 발명의 시 간격 측정 시스템은 일련의 지연 펄스를 생성하고, 이들 각각은 그의 선행하는 지연 펄스로부터 시스템 클록의 사이클 시간보다 더 짧은 단윈 지연 시간에 의해 측정 및 지연되는 시 간격과 동일한 펄스폭을 갖는 것이다. In order to measure individual time intervals with an accuracy above the frequency limit of the semiconductor, the time interval measuring system of the present invention generates a series of delay pulses, each of which is shorter than the cycle time of the system clock from its preceding delay pulse. It has the same pulse width as the time interval measured and delayed by the delay time. 일련의 차별적인 수 측정 펄스는 일련의 지연 펄스로부터 생성되고, 이들 각각은 공통 시간에 상승하고 각각의 대응하는 지연 펄스에서 하강한다. A series of differential number measurement pulses are generated from a series of delay pulses, each of which rises at a common time and falls at each corresponding delay pulse. 차별적인 수 측정 펄스에서 계수된 시스템 클록의 동일한 펄스 수의 가장 긴 시켄스의 수로부터 단위 지연 시간이 측정된다. The unit delay time is measured from the number of longest sequences of the same number of pulses of the system clock counted in the differential number measuring pulses. 각각의 지연 펄스에서 계수된 시스템 클록의 펄스 수의 평균치로부터, 측정되는 시 간격은 단위 지연 시간의 정확도에 의해 계산된다. From the average of the number of pulses of the system clock counted at each delay pulse, the time interval measured is calculated by the accuracy of the unit delay time.

TDC control system, method and film thickness detection device

本发明的实施例提供了一种TDC控制系统、方法和膜厚检测装置，涉及质量检测技术领域。该TDC控制系统包括均与微处理器电连接的状态机、所述第一数据选择输出模块和时间数字转换器，状态机与第二数据选择输出模块电连接，第一数据选择输出模块、第二数据选择输出模块均与时间数字转换器电连接，第一数据选择输出模块和第二数据选择输出模块均包括多个具有不同延时时长的延时通道。通过第一数据选择输出模块和第二数据选择输出模块可调节开始信号和结束信号向时间数字转换器发送的时间，使得较短延时链长度的时间数字转换器能够得到准确和稳定的第一时间间隔值和第二时间间隔值，从而获得更准确和稳定的待测频率波形的频率。

METHOD FOR MEASURING AT LEAST THE AVERAGE FREQUENCY OF AN ALTERNATIVE SIGNAL, AND CORRESPONDING ELECTRONIC CIRCUIT

Le procédé de mesure d'au moins la fréquence moyenne (Fac) d'un signal alternatif (SAN), dans lequel on reçoit le signal alternatif pendant une période de mesure (PM), on déclenche un premier compteur (18) cadencé à une première fréquence (F1), on détecte, à partir du début de la période de mesure, chaque passage par zéro du signal alternatif selon un sens de passage prédéterminé, on enregistre la valeur courante du premier compteur (18) à chaque passage par zéro selon le sens de passage, on déclenche, au premier passage par zéro, un deuxième compteur (19) avec une valeur de compteur initiale (N0) et l'incrémente à chaque passage ultérieur par zéro, on calcule la fréquence moyenne (Fac) du signal alternatif en fonction de la première fréquence (F1) et des première et dernière valeurs courantes enregistrées du premier compteur, la valeur de compteur initiale (NO) et de la dernière valeur du deuxième compteur. The method of measuring at least the average frequency (FAC) of an alternating signal (SAN), in which the AC signal is received during a measurement period (PM), triggers a first counter (18) clocked at a first frequency (F1), each zero crossing of the AC signal is detected from the beginning of the measuring period in a predetermined direction of passage, the current value of the first counter (18) is recorded at each zero crossing according to the direction of passage, a second counter (19) with an initial counter value (N0) is triggered at the first zero crossing and the increment is incremented at each subsequent passage by zero, the average frequency (Fac) of the signal is calculated alternating according to the first frequency (F1) and the first and last registered values of the first counter, the initial counter value (NO) and the last value of the second counter.

Frequency counter

Patent FR2420767B1

PULSE FREQUENCY MEASURING APPARATUS, WITH LOGARITHMIC CHARACTERISTICS

Digital=analogue conversion circuit - has digital counter which controls feedback path of high gain amplifier

A frequency-to-voltage converter includes a control circuit (10) to which an input signal of frequency F1 is fed. A clock pulse generator (11) produces a regular train of pulses having a frequency F2. The control circuit is coupled indirectly by way of an AND-gate (17) to a digital counter circuit (13). There is also a direct connection. The clock pulse generator output is applied to the AND-gate. The counter is connected to a memory circuit (14) and thence to a D/A converter (15) which is placed in the feedback path of a high-gain amplifier (16). There is a direct connection between the control circuit and the memory. An analogue signal obtained from the amplifier is proportional to the frequency of the input signal.

Patent FR3033411A1

L'invention concerne un dispositif de détection comportant : un réseau de pixels, chaque pixel comprenant un capteur et générant un signal d'oscillation (S) ; et un circuit de détection de fréquence (206, 208, 210) pour détecter la fréquence du signal de sortie oscillant d'un ou plusieurs des pixels, le circuit de détection de fréquence comprenant : un circuit de génération de fenêtre (208) adapté à générer au moins un signal de sortie (WIN_SEN) indiquant les instants de début et de fin d'une première durée (TWINDOW) correspondant à une pluralité de périodes du signal de sortie oscillant ; et un ou plusieurs compteurs (210) adaptés à recevoir au moins un signal de référence (TCOUNT, TREAD) indiquant les instants de début et de fin d'une durée de référence (TREF), et à quantifier une différence entre la première durée et la durée de référence. The invention relates to a detection device comprising: an array of pixels, each pixel comprising a sensor and generating an oscillation signal (S); and a frequency detection circuit (206, 208, 210) for detecting the frequency of the oscillating output signal of one or more of the pixels, the frequency detection circuit comprising: a window generating circuit (208) adapted to generating at least one output signal (WIN_SEN) indicating the start and end times of a first duration (TWINDOW) corresponding to a plurality of periods of the oscillating output signal; and one or more counters (210) adapted to receive at least one reference signal (TCOUNT, TREAD) indicating the start and end times of a reference duration (TREF), and to quantify a difference between the first duration and the reference period.

DEVICE FOR MEASURING THE FREQUENCY OF A PULSE GENERATOR AND DIGITAL CONTROL SYSTEM INCLUDING SUCH A DEVICE

Dispositif de mesure précise de la fréquence de répétition d'un générateur d'impulsions avec un temps d'acquisition constant sur une large plage de mesure et une précision constante. Les impulsions d'une horloge rapide sont comptées au cours de chaque période des impulsions du générateur puis accumulées dans un registre (contenu N2), au cours de chaque période des impulsions d'une horloge lente. Les impulsions du générateur sont également comptées au cours de cette dernière période (contenu N1). A la fin de cette période, un calculateur délivre la mesure en calculant omega = K N1/N2, K étant un coefficient de proportionnalité. Application à la commande et la régulation de vitesse d'un moteur de laminoir, le générateur d'impulsions étant entraîné par le moteur. Device for accurately measuring the repetition rate of a pulse generator with constant acquisition time over a wide measuring range and constant accuracy. The pulses of a fast clock are counted during each period of the pulses of the generator and then accumulated in a register (content N2), during each period of the pulses of a slow clock. The pulses of the generator are also counted during this last period (content N1). At the end of this period, a computer delivers the measurement by calculating omega = K N1 / N2, K being a coefficient of proportionality. Application to the control and speed regulation of a rolling mill motor, the pulse generator being driven by the motor.

PROCESS FOR FREQUENCY MEASUREMENT

PROCEDE POUR LA MESURE DE FREQUENCE EN COMPARANT LA FREQUENCE A MESURER A UNE FREQUENCE DE REFERENCE APPLIQUEES A CET EFFET CHACUNE A UN COMPTEUR; LE COMPTEUR 13 POUR LA FREQUENCE DE REFERENCE DELIVRE, LORS DU PASSAGE PAR ZERO (DONT LA POLARITE EST DETERMINEE) D'UNE IMPULSION DE LA FREQUENCE A MESURER ET A LA FIN D'UNE PERIODE DE MESURE, UN SIGNAL QUI COMMANDE LA MISE EN MEMOIRE DE L'ETAT DU COMPTEUR 13 DE LA FREQUENCE DE REFERENCE DANS UNE PREMIERE MEMOIRE 15, ET LE COMPTEUR 12 POUR LA FREQUENCE DE MESURE EST DECLENCHE PAR LES PASSAGES PAR ZERO (DONT LA POLARITE EST DETERMINEE) DES IMPULSIONS DE LA FREQUENCE A MESURER ET L'ETAT DE CE COMPTEUR 12 ETANT ENREGISTRE DANS UNE DEUXIEME MEMOIRE 14 AU MOYEN DU SIGNAL A LA FIN D'UNE PERIODE DE MESURE.

Frequency counting apparatus and method

FREQUENCY COUNTING APPARATUS AND METHOD Field of the Invention A device and method for measuring the frequency of an input signal by measuring the number of cycles of the input signal that occur in a sample interval between successive sampling times tn. An integer counter determines an estimated integer number of input signal cycles, and fraction counters determinefractional counts by counting cycles of a clock signal during time intervals between a first measurement time before the sampling time and a second measurement time after the sampling time. A correction circuit refines the fractional counts by determining the phase relationships between the clock and input signals at each measurement time. The correction circuit includes a constant current source, a capacitor, a first switch connected between the constant current source and a reference potential, a second switch connected between the constant current source and the capacitor, and a control circuit forthe switches. The control circuit disconnects the current source from the reference potential at each measurement time, and disconnects the current sourcefrom the capacitor upon the next occurrence of a periodic characteristic of the clock signal that occurs after the measurement time. The voltage on the capacitor then provides the required phase relationship.

METHOD AND APPARATUS FOR MEASURING THE FREQUENCY OF A SCAN SIGNAL

METHOD AND DEVICE FOR MEASURING THE FREQUENCY OF A SIGNAL

Patent FR2176557A1

Method and device for measuring the frequency of a signal

Patent FR2176556A1

SAMPLING FREQUENCY

FREQUENCEMETRE. IL COMPREND DES MOYENS POUR MESURER LE NOMBRE DE CYCLES COMPLETS D'UN SIGNAL ALTERNATIF PENDANT UNE PERIODE D'ECHANTILLONNAGE, NOTAMMENT EN COMPTANT LE NOMBRE DE PASSAGES PAR ZERO PAR VALEURS CROISSANTES OU DECROISSANTES DE CE SIGNAL, ET DES MOYENS POUR ADDITIONNER A CE NOMBRE UNE QUANTITE CORRESPONDANT AUX CYCLES FRACTIONNAIRES EN DEBUT ET EN FIN DE PERIODE D'ECHANTILLONNAGE. UN TEL FREQUENCEMETRE EST UTILISABLE POUR CONSTITUER UN INDICATEUR DE VITESSE DE VEHICULE AUTOMOBILE PAR MESURE D'UNE FREQUENCE LIEE A LA VITESSE DE ROTATION DE SES ROUES ET PEUT ETRE ASSOCIE A DES MOYENS D'ASSERVISSEMENT DU FREINAGE.

DIGITAL COMPARATOR, DIGITAL RATIOMETER AND AMPLITUDE ANALYZER COMPRISING SUCH RATIOMETERS

DEVICE FOR RAPID MEASUREMENT OF THE FREQUENCY OF A PERIODIC ELECTRIC SIGNAL

DEVICE AND METHOD FOR FREQUENCY MEASUREMENT IN AN AUTOMATED MODULE

Patent FR2182207B1

Pulse counter

DIGITAL COMPARATOR, DIGITAL RATIOMETER AND AMPLITUDE ANALYZER COMPRISING SUCH RATIOMETERS

On résoud les problèmes du calcul et de l'affichage du rapport de deux ou plusieurs grandeurs, sous réserve que ces grandeurs soient convertibles en fréquence. On utilise des registres de comptage pour évaluer ces grandeurs. On évite la saturation de ces registres 6, 13 de comptage en provoquant le décalage à droite 10, 19 de tous les registres dès 15 que l'un d'eux arrive en saturation. The problems of calculating and displaying the ratio of two or more quantities are solved, provided that these quantities are convertible into frequency. Count registers are used to evaluate these quantities. The saturation of these counting registers 6, 13 is avoided by causing the right shift 10, 19 of all the registers as soon as one of them reaches saturation.

Improvements to digital metering equipment

Patent FR2176557B1

CIRCUIT FOR DETECTION OF THE RELATIONSHIP BETWEEN THE FREQUENCIES OF TWO SIGNALS

Pour déterminer la relation entre la fréquence d'un signal de référence et la fréquence d'un signal inconnu, on applique ces signaux à un premier circuit de détermination de séquence FF1, FF2, qui attaque un second circuit de détermination de séquence, EOR, FF3, FF4. Ce second circuit fournit un signal qui indique la relation entre la fréquence du signal de référence et la frequence du signal inconnu. Application aux boucles à verrouillage de phase. To determine the relationship between the frequency of a reference signal and the frequency of an unknown signal, these signals are applied to a first sequence determination circuit FF1, FF2, which drives a second sequence determination circuit, EOR, FF3, FF4. This second circuit provides a signal which indicates the relationship between the frequency of the reference signal and the frequency of the unknown signal. Application to phase locked loops.

Patent FR2248514A1

Methods for determining the frequency or period of a signal

公开了用于为信号时序边沿确定时间戳以便在例如用于确定信号的频率的倒数计数器中使用的方法，包括以下步骤：将信号输入抽头延迟线，在每个延迟线抽头的输出产生多个延迟线抽头信号。在一个实施例中，在检测信号时序边沿并确定对应于在信号时序边沿或下一个时钟时序边沿的计时器时钟循环计数的初始时间值后，监视延迟线抽头信号以确定要对该初始值进行的分数校正时间值调整，以计及信号时序边沿与下一个时钟时序边沿之间的延迟来确定时间戳。在另一个实施例中，在检测信号时序边沿后，对应于在延迟线抽头信号时序边沿的计时器时钟循环计数的多个延迟线计时器时钟循环计数的平均值用于确定时间戳。

Counter

(57)【要約】本公報は電子出願前の出願データであるた め要約のデータは記録されません。

Sensing apparatus for seismic wave by current-triggered

본 발명은 전류 트리거 방식의 탄성파 탐사장치 및 방법에 관한 것으로, 탄성파를 검출한 트리거 센서부(110)의 아날로그 트리거신호를 디지털 트리거신호로 변환하고, 트리거 센서부(110)의 위치정보와 상기 디지털 트리거신호를 무선디지털 송수신부(140)를 통해 무선 디지털 통신신호로 변환하여 송신하는 트리거부(100)와, 상기 트리거부(100)로부터 수신된 무선 디지털 통신신호로부터 상기 디지털 트리거신호와 트리거 센서부(110)의 위치정보를 분리한 후, 트리거 센서부(110)의 위치정보를 저장하고, 수신된 디지털 트리거신호에 따라 다수의 수진기(300) 각각으로부터 수신되는 탄성파 검출신호를 수신하여 저장 및 분석하는 탐사기 본체부(200)로 구성될 수 있다.

Electrical apparatus

Apparatus for measuring frequency includes a first period measuring counter (14) arranged to measure a periodic signal and generate a counter enable signal an integer number of cycles long, and a second period measuring counter (15) arranged to measure frequency of an input signal over a gate period given by the counter enable duration. The apparatus may be used to remove dither in the measurement of carrier frequency of FM signals.