SU879617A2

SU879617A2 - Signalling device for determination of shaft rotation direction

Info

Publication number: SU879617A2
Application number: SU802887215A
Authority: SU
Inventors: Геннадий Иванович Лошкарев; Анна Александровна Итина
Original assignee: Украинский Государственный Проектный Институт "Металлургавтоматика"
Priority date: 1980-01-14
Filing date: 1980-01-14
Publication date: 1981-11-07

Description

(54) СИГНАЛЬНОЕ УСТРОЙСТВО ДЛЯ ОПРЕДЕЛЕНИЯ НАПРАВЛЕНИЯ ВРАЩЕНИЯ ВАЛА(54) SIGNAL DEVICE FOR DETERMINING THE DIRECTION OF THE ROTATION OF A SHAFT

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Изобретение относитс к области автоматической сигнализации.This invention relates to the field of automatic signaling.

В основном авт. св. № 645188 описано сигнальное устройство дл определени направлени вращени вала, содержащее два датчика оборотов и D -триггер, причем выход каждого датчика подключен к одному из входов D-триггера.Basically auth. St. No. 645188 describes a signaling device for determining the direction of rotation of the shaft, comprising two speed sensors and a D-trigger, with the output of each sensor connected to one of the D-flip-flop inputs.

Недостатком устройства вл етс невозможность реверсивного счета числа оборотов вала в зависимости от направлени вращени . Автоматическое определение числа оборотов вала в зависимости от направлени вращени вл етс необходимым фактором при использовании данного устройства в системах с программным управлением .The drawback of the device is the impossibility of reversing the count of the number of revolutions of the shaft depending on the direction of rotation. The automatic determination of the rotational speed of the shaft depending on the direction of rotation is a necessary factor when using this device in software-controlled systems.

Целью изобретени вл етс расширение функциональных возможностей сигнального устройства дл определени направлени вращени вала.The aim of the invention is to extend the functionality of the signaling device to determine the direction of rotation of the shaft.

Поставленна цель достигаетс тем, что в предложенное устройствб, содержа шее два датчика оборотов и D -триггер,The goal is achieved by the fact that in the proposed device, containing two speed sensors and a D-trigger,

выход каждого датчика подключен к одному из входов D -триггера, введены два элемента И, первые входы которых подключены к соответствующим выходам Р - триггера, вторые входы объединены и подключены к выходу датчика оборотов, св занного с синхронизирующим входом D триггера .the output of each sensor is connected to one of the D-trigger inputs, two I elements are entered, the first inputs of which are connected to the corresponding P-flip-flop outputs, the second inputs are combined and connected to the output of the speed sensor connected to the synchronization input D of the trigger.

На фиг. 1 показана функциональна схема устройства; на фиг. 2 - временна диаграмма его работы.FIG. 1 shows a functional diagram of the device; in fig. 2 - time diagram of his work.

Устройство содержит датчики 1 и 2 оборотрв, выходы которых соединены соответственно с информационным (JD-вход) и синхронизирующим (С-вход) входами D -триггера 3, пр мой 4 и инверсный 5 выходы которого подключены ко входам первого 6 и второго 7 элементов И соответственно , вторые входы которых объединены и подключены к выходу датчика 2.The device contains sensors 1 and 2 turntables, the outputs of which are connected respectively to the informational (JD-input) and synchronizing (C-input) inputs of D-trigger 3, direct 4 and inverse 5 outputs of which are connected to the inputs of the first 6 and second 7 And elements respectively, the second inputs of which are combined and connected to the output of sensor 2.

Выходы элементов 6 и 7 И св заны с .выходными щинами 8 и 9 устройства.The outputs of elements 6 and 7 are connected with the output wedges 8 and 9 of the device.

Claims

The device works as follows. 38 When the direction of rotation is clockwise, the leading edge of the first voltage pulse Ug acting on the C input D sets the trigger 3 to the zero state, because a zero signal is present on its information D input (voltage pulses arriving at the synchronizing C trigger input, voltage pulses ahead of the phase, arriving at the information I-trigger input). A single signal taken from the inverse output 5 D of the trigger 3, which arrives at the first input of element 7 I, permits the passage of voltage pulses from the output of sensor 2 to the output bus 9 of the device. When the direction is counterclockwise, the voltage pulses arriving at the C-trigger trigger input lag in phase from the voltage pulses Hai .. to the informational D input, which ensures that D-flip-flop 3 is set to one. In this case, a single signal from the direct output 4 D of the trigger 3, which is present at the first input of element 6 I, allows the passage of voltage pulses from the output of sensor 2 to the output width 8 of the device. Thus, depending on the direction of rotation of the shaft, voltage pulses will appear either at output 4 to bus 8 (with the direction of rotation counterclockwise), or at output bus 9 (with the direction of rotation clockwise). Introduction to the proposed device of two elements And allows you to extend the functionality with minimal circuit costs. The proposed device can be used to count the number of revolutions of the shaft in cases where it is necessary to distinguish the direction of their movement. Claims: Signaling device for determining the direction of shaft rotation according to aut. St. No. 645188, characterized in that, in order to expand its functionality, two AND elements are introduced into it, the first inputs of which are connected respectively to the outputs of the D-trigger, the second inputs are combined and connected to the output of the speed sensor connected to the clock input of the D-trigger. Sources of information taken into account in the examination. USSR Author's Certificate No. ё 45188, cl. Q 08 С 9 / ОО, Q 08 В 23 / ОО, 1977 (prototype).

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