SU1363126A2 - Alarm signalling device - Google Patents

Abstract

The invention relates to an automaton. Toned process control systems and can be used in emergency protection and alarm systems in the metallurgical, chemical, energy and other industries. The purpose of the invention is to expand the functional capabilities of the device by checking the status of the remaining sensors after the first one. The purpose of the invention is achieved by the fact that a device containing g (L o

Description

1 pulse generator, element 2, counter 3, sensors 4, multiplexer

5, the decoder 6, the indicators 7, the delay element 8, the trigger 9, the reset button 10, the polling button 11 are entered, according to the number of sensors 4 additional triggers 12 and first 13 and the second 14 groups of controlled keys. In the initial state, by the reset button 10, the trigger 9 and the counter 3 are set to the state 1 and O, respectively. When the pulse generator 1 is operating, multiplexer 5 interrogates sensors 4. When one of the sensors 4 is activated, the signal

from the output of multiplexer 5 switches the common trigger 9 and enters the second gate of the decoder

6, to the first gate input of which a signal enters through a delay element. At the output of the decoder 6,

The invention relates to automated process control systems, can be used in emergency protection systems and alarm systems in the metallurgical, chemical, energy and other areas of productivity and is an improvement of the device for avtoSV, No. 1228133.

The purpose of the invention is to expand the functionality of the device by checking the status of the remaining sensors after the first one.

The drawing shows a functional diagram of the device.

The device contains a pulse generator 1, element 2, counter 3, sensors 4, multiplexer 5, deflector 6 by the number of sensors 4, indicators 7, delay element 8, common trigger 9, reset button 10, interrogation button 11 and by the number of sensors 4 additional triggers 12, controllable keys 13 (first group) and 14 (second group).

A signal O appears corresponding to the number of triggered sensor 4. Corresponding indicator 7 indicates the number of sensor 4 triggered first. At the same time, the corresponding additional triggers 2 corresponding to this sensor 4 and sensors 4 triggered after sensor 4 triggered first are simultaneously switched. From the outputs of the respective additional triggers 12, the control inputs of the respective controlled keys 14 receive unlocking signals, when the polling button 11 is pressed, all the controlled keys 13 are opened. This turns on the indicators 7 that correspond to sensors 4 that are activated after sensor 4, working first. After the alarm is cleared by the reset button 10, the device is reset. 1 il.

The device works as follows.

In the initial state, by pressing button 10 (reset), trigger 9 is set to state 1, and counter 3 is set to state A. In this case, pulses from the output of generator 1 of pulses through element 2 come to counting input of counter 3 and through element 8 delays to the first gate input of the decoder 6. From the outputs of the counter 3, signals are sent to the address codes of the multiplexer 5 and to the information inputs of the decoder 6.

In accordance with the information received at the address inputs of the multiplexer 5, the sensors 4 are alternately polled and the signals from their outputs are alternately passed to the multi output

plexer 5 and further to the first input of the trigger 9 and the second gating input of the decoder 6. In the normal state of the sensors 4, the signal from the output of the multiplexer 5 does not change the state of trigger 9 and prohibits the operation of the decoder 6, Triggers 12, connected

The outputs of sensors 4 are in state 1. When the decoder 6 is disabled, its outputs also set signal 1. The control inputs of the switches 13 are connected to the open contact of the interrogation button 11, and the keys 14 to the outputs of the corresponding triggers 12. Since The control inputs of the keys 13,14 are set to single signals, the keys 13, 14 are closed.

In the event of an accident, any of the sensors 4 triggers and at the moment of its polling the signal at the output of multiplexer 5 changes its logical value, which leads to switching of the trigger 9 to the state O and, therefore, to blocking the element 2, Pulses to the counting input of the counter 3 is not received, the process of polling the sensors 4 is terminated. At the output of the trigger 9, an output signal is generated for the emergency shutdown of the control system to ensure its protection.

(On the second gate input-decoder- 25 additional triggers and the first and

of the torus 6, the enabling signal comes from the output of the multiplexer 5, and to the first one - delayed by the delay element 8 s of the vrd of the I.2 element. The information supplied to the inputs of the decoder 6 and the corresponding address of the activated sensor 4 is fed through the decoder 6 to the input of the indicator 7 corresponding to the number of the activated sensor 4. Thus, the first alarm is recorded.

When alarms accompanying the first (occurrence of subsequent sensors 4) occur, they are memorized by the corresponding triggers 12, the outputs of which are set to O, which includes the corresponding keys 14. With

Editor M. Tsitkina

Compiled by Y. Budarina Tehred A. Kravchuk

Order 6358/36 Circulation 544

VNIIPI USSR State Committee

for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab., 4/5

Production and printing company, Uzhgorod, Projecto st., 4

When the polling button 11 is turned on, the control inputs of the keys 13 are received. And, through the keys 13 and the zero-defined I2 trigger keys 14, the corresponding indicators 7 are connected to the common bus. Their luminescence determines the numbers of accidents accompanying the first and, therefore, 0 numbers of triggered sensors 4,

After eliminating the alarm, returning the circuit to its initial state is accomplished by turning on the reset button 10.

Claims (1)

5 claims Emergency alarm device, auth.St. No. 1228133, that is, in order to expand the functional capabilities of the device by checking the state of the remaining sensors after; Srabatshani the first, it entered the button of the survey, according to the number of sensors the second group of controllable keys, in each of which the number of controllable keys corresponds to the number of sensors, the information inputs of the controllable the keys of the first group are connected to the corresponding indicators, and the outputs are connected to the informational inputs of the corresponding controlled keys of the second group, whose outputs are connected to the common bus, and the control inputs are connected to the outputs of the corresponding additional triggers, the first inputs of which are connected to the outputs of the respective sensors, and the second - to the second input of the trigger; the control inputs of the controlled keys of the first group are connected to the common bus through the closing contact of the polling button. Proofreader O. Kravtsov Subscription