SU587412A1

SU587412A1 - Method and apparatus for measuring phase difference

Info

Publication number: SU587412A1
Application number: SU762359531A
Authority: SU
Inventors: Вилиамин Яковлевич Супьян; Алексей Парфирьевич Похидюк; Святослав Николаевич Горобатюк
Original assignee: Винницкий политехнический институт
Priority date: 1976-05-07
Filing date: 1976-05-07
Publication date: 1978-01-05

Description

33

менту совпадени и входу депитеп частоты, вых которого соединен с опним из входов врем задаюшего эпемента совпаденн . введены -два амплиту tetx детектора, а врем вадаюший элемент совпадени содержит два дополнительныхthe match point and the input of the frequency depot, the output of which is connected to the back of the inputs, the time of the masterpiece is the same. two amplitudes of the tetx detector are introduced, and the time of the match coincidence element contains two additional

входа, к которым подклгочелы выходы амплитудных детекторов, входы которых подкгаочены к Формирователдал сигналов.inputs to which the outputs of the amplitude detectors are connected, the inputs of which are connected to Shaper signals.

На чертеже изображена структурна схема устройства, реализующа предлагаемый .способ.The drawing shows a block diagram of the device that implements the proposed method.

Она состоит из формировател сигналов 1, триггера 2, амплитудных детекторов 3 и 4, квантующего элемента 5 совпадений врем задающего элемента 6 совпадени ,It consists of a signal generator 1, a trigger 2, amplitude detectors 3 and 4, a quantizing coincidence element 5, the time of a matching element 6,

генератора 7 импульсов делител 8 частоты , счетчик 9 импульсов.generator 7 pulses divider frequency 8, the counter 9 pulses.

Устройство работает следующим образом. Короткие импульсы,получаемые путем ограничени и дифференцировани входных сигналов, с помощью формировател 1 подают на входы триггера 2, формирующего импульсы , длительность которых пропорциональна разности фаз. Выходные имггульсы триггера 2 заполн к т счетными импульсами, получеггаыми с генератора 7, Эти импульсы пропускают через элементы 5 и 6 совпадений и подсчитывают счетчиком 9 импульсов за прсто нное измерительное врем , определ емое коэффициентом делени делител 8 частоты .The device works as follows. The short pulses received by limiting and differentiating the input signals, using shaper 1, are fed to the inputs of the flip-flop 2, which forms the pulses, the duration of which is proportional to the phase difference. The output signals of trigger 2 are filled with m counting pulses received from oscillator 7, These pulses are passed through elements 5 and 6 of coincidence and are counted by 9 counter pulses for the total measuring time determined by the division factor of frequency divider 8.

Claims

- The counter 9 indicates the phase difference between the input signals. .. Claim 1. Stk; on measuring the phase difference based on the measurement of time intervals

between the moments of transition through zero values of the compared voltages by counting the number of high-frequency pulses that have passed to the counting device in a constant measurement time, I distinguish it. In order to increase the accuracy of measuring the difference in phase between the radio signals, the necessary constant measurement time is chosen equal to the time of simultaneous presence of radio pulses at the inputs of the phase meter.

2. A device for performing the phase difference measurement method according to claim 1, comprising a shaping device, a trigger, a pulse counter, a pulse generator, connected to the time by a matching element, the output of which is connected to the quantizing element of the coupling and the frequency divider input, the output of which A match time element is connected to one of the inputs, characterized in that it is additionally equipped with two amplitude detectors, and two auxiliary inputs of the match time element are connected to the amplitude outputs. Smart detectors whose inputs are connected to a signal conditioner.

Sources of information taken into account in the examination:

1. USSR author's certificate number 462145, cl. G-01 R 25 / GS, 1973.

2. Smirnov P. T. Digital phase meters. L., Energie, 1974, p., 33, fig. 3