SU966852A1

SU966852A1 - Device for determining asynchronism of signals

Info

Publication number: SU966852A1
Application number: SU802894944A
Authority: SU
Inventors: Анатолий Иосифович Каминский; Николай Владимирович Башкатов; Владимир Яковлевич Левкин; Петр Михайлович Блинов
Original assignee: Предприятие П/Я Г-4335
Priority date: 1980-03-20
Filing date: 1980-03-20
Publication date: 1982-10-15

Description

(5) УСТРОЙСТВО дл ОПРЕДЕЛЕНИЯ НЕСИНХРОННОСТИ (5) DEVICE FOR DETERMINATION OF INTEGRALITY

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Изобретение относитс к импульсной технике и автоматике и может ней ти применение в приборостроении, в частности в осциллографии дл автоматического управлени режимами работы канала синхронизации.The invention relates to a pulse technique and automation and can be used in instrument making, in particular in oscillography for the automatic control of the synchronization channel operation modes.

Дл определени несинхронности двух сигналов может быть использован двухканальный или двухлучевой осциллограф при синхронизации развертки от одного из каналов. Если изображение одного из каналов на экране осциллографа неподвижно, а второе размыто, то сигналы несинхронны, а если оба изображени на экране осциллографа неподвижны, то это гово рит о синхронности сигналов р..A two-channel or two-beam oscilloscope can be used to determine the non-synchronism of two signals when synchronizing the sweep from one of the channels. If the image of one of the channels on the oscilloscope screen is motionless, and the second one is blurry, then the signals are not synchronous, and if both images on the oscilloscope screen are still, then this means that the signals are synchronized ..

Недостатком этого способа вл етс невозможность автоматической обработки информации, полученной с экрана осциллографа.The disadvantage of this method is the impossibility of automatic processing of information obtained from an oscilloscope screen.

Известно устройство дл сравнени частот, содержащее первый и второй формирователи, первый элемент совпаСИГНАЛОВA device for comparing frequencies is known, comprising the first and second shapers, the first element of SIGNALS

дени , входы которого соединены с выходами формирователей, второй элемент совпадени , первый вход которого .соединен с выходом первого формировател через линию задержки, а второй вход с выходом второго формировател - непосредственно, и триггер, входы которого соединень с выходами элементов совпадени 2J.The inputs are connected to the outputs of the drivers, the second match element, the first input of which is connected to the output of the first driver through the delay line, and the second input to the output of the second driver directly, and the trigger, whose inputs are connected to the outputs of the match elements 2J.

Недостатком известного устройстваThe disadvantage of the known device

О вл ютс узкие функциональные возможности , поскольку данное устройство Может индецировать синхронность лишь близких по частоте сигналов.O are narrow functionality, since this device can only indicate synchronism of signals that are close in frequency.

Цель изобретени - расширениеThe purpose of the invention is the expansion

5 функциональных возможностей, заключающеес в обеспечении индикации синхронности различных по частоте сигналов .5 functionality, which consists in providing an indication of the synchronicity of signals of various frequencies.

Поставленна цель достигаетс тем, The goal is achieved by

Claims

20 that a device for determining the asynchronous signals containing the first and second drivers, the first match element, whose inputs are connected to the outputs of the drivers, the second match element and the trigger introduced a comparison element, the third match element, the inputs of which are connected respectively to the output of the first match element and the inver trigger output, the first and second peak detectors, the inputs of which are connected respectively to the outputs of the third and second elements of the match, the outputs to the inputs of the comparison element audio, and the display element, whose input is connected to the output comparator element, the first input of the second coincidence element, and the second - to a direct output of flip-flop ,. the input of which is connected to the output of the second shaper. The drawing shows a block diagram of the device. The device circuit contains the first and second formers 1,2, the first coincidence element 3, the trigger k, the second and third elements coincide 5.6, the peak detectors 7.8, the comparison element 9 and the display element 10. The device works as follows . At fixed time points of the input signals, the asynchronicity of which should be determined, the formers 1 and 2 generate triple or exponential pulses with a duration greater than or equal to half the period of the higher frequency. From the output of the formers, pulses of constant amplitude arrive at the coincidence element 3. At the output of the element, from drop 3, pulses appear, the amplitudes of which depend on the phase ratios. If the signals are synchronous, then the amplitude of the pulses is constant, if they are not synchronous, then the amplitude of the pulses generally varies from pulse to pulse. The pulses from the output of the coincidence element 3 arrive at the first inputs of elements 5 and 6, the second inputs of which alternately receive pulses from the outputs of trigger k, which is triggered from the driver 2. If the signals are synchronous, then the outputs of elements 5 and 6 alternately appear pulses the same amplitude, and if not synchronous, then the pulses at the outputs of elements 5 and 6 are not equal, since at their first input there are pulses of different amplitudes. With the help of peak detectors 7, 8, the amplitude of the output pulses of elements 5,6 is memorized and compared by the element of comparison 9. Depending on the ratio of the voltages at the outputs of the detectors 7, 8, the comparison element changes the polarity of its output voltage. If the signals are not synchronous, there is a periodic change in the polarity of the output voltage of the element 9. Display element 10 analyzes the state of the reference element 9- If the voltage at the output of the element 9 does not change, signal synchronism is displayed, otherwise asynchronous. At the same time, the accuracy of determining synchronicity-asynchronism is determined by the analysis time. The present invention allows to determine the non-synchronism of signals at a frequency multiplicity of input signals. An apparatus for determining signal non-synchronization, comprising first and second drivers, a first match element, the inputs of which are connected to the driver outputs, a second match element and a trigger, characterized in that, in order to extend the functionality, a comparison element is entered into it, the third element matches, the inputs of which are connected respectively with the output of the first element of the match and the inverse output of the trigger, the first and second peak detectors, the inputs of which are connected respectively essentially with the outputs of the third and second coincidence elements, and the outputs with the inputs of the comparison element, and the display element, the input of which is connected to the output of the comparison element, the first input of the second coincidence element connected to the output of the first coincidence element, and the second input with a straight the output of the trigger, the input of which is connected to the output of the second driver. Sources of information taken into account in the examination 1. Oscilloscope C1-55. Technical description and operating instructions.

2. Authors certificate of the USSR 1, cl. H 03 D 13/00, 02.0.