SU1764070A1 - Warning alarm device - Google Patents

Description

one

(21) 4784431/24

(22) 01/17/90

(46) 09/23/92. Bul No. 35

(72) A.D. Zorin, A.N. Zubarev and M.A. Kazakov

(53) 654.91

(56) Patent of Germany No. 2536946, cl. G08 B 26/00, 1975.

USSR Author's Certificate No. 1363126, cl. G 08 B 26/00, 1985.

(54) DEVICE FOR ALARM SIGNALING

(57) The invention relates to automated process control systems and may be

used in emergency protection and alarm systems in the metallurgical, chemical, energy and other industries. The purpose of the invention is to increase the functional reliability of the device. The purpose of the invention is achieved in that the device 5 additions sensors and the second reset button 16 are additionally entered into the device according to the number of sensors 4. The device ensures that information about the activated sensor 4 is stored during the accident elimination and allows to accumulate information about activated sensors 4 or reset it after the elimination of the accident, 1C. f-ly, 2 ill.

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This invention relates to automated process control systems and can be used in emergency protection and alarm systems in the metallurgical, chemical, energy, and other industries.

A known system for remote control of remote objects (see German Patent No. 2536946, cl. G 08 V 26/00, 1975), comprising a pulse generator, a divider, a counter, a decoder, a multiplexer, a sensor, an And element, indicators by the number of sensors and a button . The operation of the device is as follows: the pulses from the pulse generator through the divider are fed to the counter, where they are converted into binary code that goes to the information inputs of the decoder, the address inputs of the multiplexer and the inputs of the circuit I. When the sensor is turned on and the code coincides with the code of one of the circuits And, the corresponding indicator lights up, indicating its operation. The process of interrogating the sensors occurs continuously without stopping the operation of the circuit at the moment the sensor triggers, which is not always acceptable in alarm devices and limits the functionality of the device.

The closest in technical essence to the claimed solution is the device for the alarm signaling described in the USSR author's certificate No. 1363126, cl. G 08 B 26/00, 1987.

The device contains a pulse generator, an element I, a counter sensors multiplexer, a decoder according to the number of sensors indicators, a delay element, a common trigger, a reset button, a polling button, additional triggers according to the number of sensors, controlled keys of the first and second groups.

The device works as follows. In the initial state, with the reset button, the common trigger and the counter are set to state 1 and 0, respectively. When a pulse generator is operating, a sensor is polled by means of a multiplexer. When one of the sensors triggers, the signal from the multiplexer output switches the common trigger and enters the second gate input of the decoder, the first gate input of which receives a signal through the delay element. O signal appears on the output of the decoder corresponding to the number of the activated sensor. The corresponding indicator indicates the sensor number worked first. At the same time, the corresponding additional triggers are switched corresponding to this sensor and the sensors triggered after the first one. WITH

The outputs of the corresponding additional triggers on the control inputs of the corresponding controlled keys of the second group receive opening signals, and when the polling button is pressed, all controllable keys of the first group open. In this case, the indicators corresponding to all triggered sensors after the first one are turned on. After the alarm is cleared by the reset button, the device is reset to the initial state 5.

The advantage of the device is the possibility of stopping its operation in the event of an accident and storing with the help of additional triggers triggered

0 with this sensor. However, the device does not allow to constantly monitor the remaining sensors that have not worked, during the elimination of one alarm, and when the reset button is pressed, the information on

5 triggered sensors.

The aim of the invention is to increase the functional reliability of the device.

A device for alarming, containing a pulse generator, the output of which is connected to the first input of the element I, the output of which is connected to the input of the delay element and to the information input of the counter, the outputs of which are connected to the corresponding address inputs of the multiplexer and the corresponding information inputs of the decoder, the outputs of which connected to the corresponding inputs of the indicator, the first reset button which is connected to the meter installation input and to the trigger input, the output of which is connected to the second input of the element I, the output of the delay element is connected to the first input of the building of the decoder, the information inputs of the multiplexer are connected to the information inputs of the same group triggers, the outputs of which through the same keys of the first group are connected to the information inputs of the same keys of the second group, the output of the multiplexer is connected to the second input of the trigger and sensors, additionally introduced by the number of sensors blocks off

5 sensors and a second reset button, the sensor outputs are connected to information inputs of the same name blocks of the sensor, whose inputs are connected to the multiplexer information codes of the same name, the first reset button is connected to the control inputs of the sensor off blocks, the second reset button is connected to the trigger input of triggers groups,

The sensor disconnection blocks each consist of a first trigger, the first input of which is the information input of the block, the output of the first trigger is NOT connected to the second corresponding input and to the first input of the second trigger whose output is the output of the block, the second input of which is the control input block.

A distinctive feature of the proposal is the introduction of the number of sensors of the sensor disconnection blocks. The inputs are connected to the sensors, and the outputs to the multiplexer information inputs of the same name, the first reset button connected to the control inputs of the sensor disable blocks, the second reset button of the sensor disable blocks, the second reset button connected with a reset input for group triggers. Each of the sensor disconnection blocks consists of two triggers and an element NOT.

Improving the functional reliability of the device is achieved by eliminating the loss of information from sensors during the elimination of the accident; Since when the sensor is triggered, a zero potential arrives at the counting input of the first trigger of the sensor disconnecting unit, which translates into the second steady state, and output 1 appears at the input of the HE element performing the function and the delay element. The delayed and inverted signal from the element output does NOT transfer the second trigger to the second steady state and reset the first trigger to the initial state. The signal from the output of the sensor disable unit through the multiplexer will stop the operation of the device and transfer the corresponding trigger group to the second stable state. The first trigger will change its state only if the sensor releases and triggers again, and this will happen only after the elimination of the accident. If it is necessary to continue polling the sensors when the sensor has been triggered, pressing the first reset button causes the second trigger of the sensor off unit to be reset and the device works in the usual order not monitoring the activated sensor. A second reset button is used to reset the memory of triggered sensors.

As a result of the analysis of the known technical solutions, the distinctive feature of the proposal in the composition of the known devices was not found, therefore the proposed alarm signaling device meets the criterion Significant differences.

Figure 1 shows the structural diagram of the device; Fig. 2 is a block diagram of the sensor disconnection unit.

The alarm device contains a pulse generator 1, element 2, counter 3, sensors 4, multiplexer 5, decoder 6, indicators 7, delay element 8. trigger 9, first reset button 10, interrogation button 11, group of triggers 12, second 13 and the first 14 groups of controlled keys, blocks 15

5 sensors, the second reset button 16, the output of the pulse generator 1 is connected to the first input of the element 2, the output of which is connected to the counting input of the counter 3 and the input of the delay element 8, the output of which is connected to the first gate input of the decoder 6, the outputs of the counter 3 are connected to corresponding information inputs of the decoder 6 and the address inputs of the multiplexer 5, the output of which is connected to the first input of common trigger 9 and the second gate input of the decoder 6, the outputs of which are connected to the corresponding indicators 7, the trigger output 9, is connected to the second input circuit And 2.

The 0 outputs of the trigger group 12 are connected to the control inputs of the first group of controlled keys 14, the information inputs of which are connected to the common bus, and the information outputs with informational inputs of the second group of controlled keys 13, the information outputs of which are connected to the corresponding indicators 7. and the control inputs are connected to the polling button 11, the first

0, the reset button 10 is connected to the second input of the trigger 9 and the installation input to the zero of the counter 3. The sensor off units 15 are connected to their respective sensors 4 by their information inputs 4. a

The 5 outputs are connected to the corresponding information inputs of the multiplexer 5 and the same trigger of group 12, the control input of the sensor off unit 15 is connected to the first reset button 10, and the second reset button 16 is connected to the reset input of group 12 triggers.

Each sensor disconnecting unit 15 consists of the first trigger 17, the first input of the trigger 17 is the information input of the block 15, the output of the first trigger through the NOT element 18 is connected to the second own input and the first input of the second trigger 19, the output of which is the output of the block 15 and the second input of the second trigger 19 is the control input of the block 15.

The device works as follows. In the initial state by pressing the button 10 (reset), the trigger 9 and the counter 3 are reset, while the pulses from the output of the pulse generator 1 through the element 2 arrive at the counting input of the counter 3 and through the element 8 delay at the first gate input of the decoder 6 From the outputs of counter 3, the signals arrive at the address inputs of multiplexer 5 and at the information inputs of the decoder 6.

In accordance with the information received at the address inputs of the multiplexer 5, the state of the sensors 4 through the sensor shutdown blocks 15 is interrogated and the signals from the outputs of the sensor shutdown blocks 15 are passed to the output of the multiplexer 5 and then to the first input of the trigger 9 and the second gate decoder 6. In the initial state of the second trigger 19 of the sensor deactivation unit 15, the signal from the output of multiplexer 5 does not change the state of trigger 9 and prohibits the operation of the decoder 6. The triggers of group 12 are in the initial state of the keys 13. 14 are closed.

In the event of an accident, any of the sensors 4 triggers and puts the first trigger 17 of the sensor off unit 15 into one state, the signal from the output of the first trigger 17 goes to the HE element 18, which performs the function and the delay element, from whose output the zero signal converts to the initial state the first trigger 17 and into the single state the second trigger 19, from the output of which the signal goes to the multiplexer 5 and transfers the corresponding trigger of group 12 to the second steady state. At the time of polling by the multiplexer 5, the output of the date off block 15 The sensor of triggered sensor 4, the signal at the output of multiplexer 5 changes its logical value, which leads to the switching of trigger 9, the signal from the output of which blocks element II. Pulses to the counting input of counter 3 do not arrive, the polling process stops At the second gate input of the decoder 6 the enable signal comes from the output of multiplexer 5, and to the first - delayed by the delay element from the output of element 2. The information supplied to the outputs of the decoder 6 and corresponding to the address of the triggered sensor 4 is fed through the decipher ator 6 to the input 7 of the indicator, a corresponding number of the triggered sensor 4. Thus latched accident.

When alarms accompanying the first (triggering of subsequent sensors 4) occur, they are memorized by the corresponding triggers of group 12. The signal from triggers of group 12 when the interrogation button 11 is pressed via keys 14 and

13 enters the corresponding indicators 7 and illuminates them.

If it is necessary to continue monitoring the sensors 4 during the elimination of the accident by pressing the first reset button 10, the circuit

goes into the initial state, the second trigger 19 of the sensor disconnection unit 15 goes into the initial state and when polled, the previously triggered sensors (on which the alarm has not been eliminated) are turned off.

After the elimination of the accident worked

The sensors 4 go back to the initial state and an alarm is again detected when triggered. Reset information about triggered sensors, the state of which is memorized

triggers group 12, occurs by pressing the second reset button 16 after the elimination of the accident or, if necessary.

Thus, by introducing into the device a sensor shutdown unit 15, consisting of the first and second triggers and the NOT element and the second reset button 16, the functional reliability of the alarm signaling device is increased. This prevents the sensors 4 from being able to control 4 while maintaining information about the the sensor during the alarm clearing. It allows accumulating information about the activated sensors 4 or resetting it after eliminating the alarm or if necessary.

Claims (2)

1. An alarm device comprising a pulse generator, the output of which is connected to the first input of the element I, the output of which is connected to the input of the delay element and to the information input of the counter, the outputs of which are connected to the corresponding address inputs of the multiplexer, the outputs of which connected to the corresponding inputs of the indicator, the first reset button, which is connected to the input of the meter installation and the first input of the trigger, the output of which is connected to the second input of the element AND, the output of the element delays are connected to the first input of the decoder string, the information inputs of the multiplexer are combined with the information inputs of the group triggers of the same name, the outputs of which through the keys of the first name of the first are connected to the information inputs of the keys of the second group of the same name, the outputs of which are combined with the names of the decoder of the same name, the first reset button, which connected to the control inputs of the keys of the second group, the output of the multiplexer is connected to the second input of the decoder gating and to the second input of the trigger, sensors, which, in order to increase the functional reliability of the device, the sensor off and second reset buttons are entered according to the number of sensors, the sensor outputs are connected to the information inputs of the sensor off blocks of the same name, the outputs of which are connected to the information inputs of the multiplexer of the same name, the first reset button is connected to the control inputs of the sensor off unit; the second reset button connected to the reset input of group triggers. 2. The device according to claim 1, that is, so that the sensor disconnecting unit is made of two triggers and the element is NOT, The first input of the first trigger is the information input of the block, the output of the first trigger through the element is NOT connected to the second own input and to the first input of the second trigger whose output is the output of the block, the second input of the second trigger is the control input of the block.