SU611301A1

SU611301A1 - Analogue pulse counter

Info

Publication number: SU611301A1
Application number: SU762316187A
Authority: SU
Inventors: Анас Софович Закиров; Борис Иосифович Ланцман; Валерий Евгеньевич Розенблюм
Original assignee: Предприятие П/Я А-7284
Priority date: 1976-01-22
Filing date: 1976-01-22
Publication date: 1978-06-15

Description

(54) АНАЛОГОВЫЙ СЧЕТЧИК ИМПУЛЬСОВ(54) PULSE ANALOG COUNTER

1one

Изобретение относитс к электрон-, ным счетчикам импульсов, предназначено дл получени аналогового сигнала, пропорционально числу входных импульсов , и может найти применение в анало- 5 говьо; и аналого-цифровых вычислительНБК устройствах.The invention relates to electronic pulse counters, is intended to receive an analog signal, is proportional to the number of input pulses, and can be used in analogue mode; and analog-to-digital calculator NBK devices.

Известен аналоговый счетчик импульсов , содержаний два электронных интегратора ij.10Known analog pulse counter, the contents of the two electronic integrator ij.10

При подаче на вход такого устройства импульсов фиксированной амплиту да: на выходе его получаетс аналоговыми сигнал, пропорциональный количеству входных импульсов. Однако такой счет- |5 чик отличаетс сложностью. Кроме того, ему присущи все недостатки аналогового интегратора в режиме пам ти - увеличение погрешности хранени с уменьшение частоты входных импульсов (вли ние yre-SQ чек конденсаторов пам ти, дрейфа нул интеграторов и т.п.)When a pulse is fed to the input of such a device with a fixed amplitude, it produces an analog signal at the output proportional to the number of input pulses. However, such an account is very complex. In addition, it has all the disadvantages of an analog integrator in memory mode — an increase in storage error with a decrease in the frequency of input pulses (the effect of yre-SQ memory capacitor check, zero drift of integrators, etc.)

Известен аналоговый счетчик импульсов , содержащий последовательно соединенные фо1 4ирователь импульсов и инте- 25 гратор 2.A known analog pulse counter containing a series-connected pulse generator and an integrator 2.

Основным недостатком такого аналогового счетчика вл етс увеличение погрешности счета с увеличением сквазк-i ности поступающих импульсов, .посколь- 30The main disadvantage of such an analog counter is an increase in the counting error with an increase in the squaring-i of the incoming pulses, since.

ку погрешность интегратора, обусловленна его дрейфс 1 нул , растет со временем .The error of the integrator, due to its drift of 1 zero, increases with time.

Цель изобретени - повышение точ ,ности счета одиночных импульсов и импульсной последовательности большой скважины.The purpose of the invention is to improve the accuracy of counting single pulses and the pulse sequence of a large well.

Поставленна цель достигаетс тем что в предлагаемое устройство введен преобразователь аналогового сигнала в периодическую знакопеременную функцию вход которого соединен с выходом ин .тегратора, а выход - с входом интегратора .The goal is achieved by the fact that an analog signal converter into a periodic alternating function is introduced into the device, the input of which is connected to the output of the integrator and the output to the integrator's input.

На чертеже приведена схема предлагаелого аналогового счетчика импульсов .The drawing shows a diagram of the proposed analog pulse counter.

Аналоговый счетчик импульсов содержит формирователь 1, интегратор 2 и преобразователь 3 аналогового сигнала в периодическую знакопеременную функцию, соединенные последовательно. Выход преобразовател 3 соединен с входс л интегратора 2, выход которого служит выходом счетчика.The analog pulse counter contains a driver 1, an integrator 2 and a converter 3 of an analog signal into a periodic alternating function, connected in series. The output of converter 3 is connected to the input of integrator 2, the output of which serves as the output of a counter.

Аналоговый счетчик импульсов работает следукнцим образом,The analog pulse counter operates in the following manner,

Claims

In the initial position (in the absence of pulses at the input of the counter) the voltage at the outputs of the integrator 2 and converter 3 is kept close. WHICH is due to negative feedback from the output of converter 3 to the input of integrator 2. lower than in the famous counter. Under the action of the generated pulse, the voltage at the integrator output changes by some amount, proportional to the area of the pulse. This change should be such that both signal the transition of the signal at the output of converter 3 to the area of a new stable position (the new zero of the periodic alternating alternating function of converter 3). or by the pulse at the input of the integrator 2. It is necessary to pass the maximum value of the periodic alternating sign function of the converter 3. The pulse polarity determines the sign of the increment of the output signal of the integrator 2. Upon completion of the pulse and changing accordingly the output voltage of the integrator 2 at the input Only the negative feedback signal from the output of the converter 3, leading the integrator 2 to the position exactly corresponding to the new stable position, remains in the detector 2. In this position, any change in the output voltage of the integrator 2 as a result of interference (integrator drift, leakage currents of capacitors, and so on) outputs at the output of converter 3 a signal to compensate for this change, which. It provides an arbitrarily long storage of information (voltage corresponding to the number of pulses arriving at the meter taking into account their signs), which ensures an increase in accuracy when counting pulses of high efficiency and single pulses. Thus, the introduction of an analog signal converter into the analog counter, in the periodic sign function, allows an increase. to increase the accuracy of the counting of single III pulses and the pulse sequence of a large duty cycle. Analog pulse counter containing a pulse generator connected in series and an integrator, characterized in that, in order to improve the accuracy of counting single 1-5M pulses and a high-duty cycle pulse sequence, an analog signal converter is inserted into the periodic sign-variable function, the input of which is connected to output of the integrator, and the output - with the input of the integrator. Sources of information received in feHHMaHH.e in the examination: 1. G. Korn et al. Electronic analog and analog-digital computers. M., World, 1968, P.P., p. 73, fig. 10.13.

2. I.M. Vitenberg. 1 High-speed analog computers, 1970, p. 47, FIG.