SU1621067A1 - Device for multiple-point annnunciation - Google Patents

Abstract

The invention relates to automatic alarms, in particular PG / K automatic alarms with individual light and general warning signals, and can be used in process control and monitoring systems, in particular, in functional group control systems for starting and stopping turbines. gas, chemical, energy and other industries. The aim of the invention is to improve the reliability of the device and the expansion of its scope. The goal is achieved by the fact that in a device for multipoint signaling, containing signaling cells 11, i to

Description

1

n sensors 1 of the parameter of the alarm and warning alarm channels, buttons 2, 3 and 4, respectively, reset, acknowledge and health check, generator 5 pulses, driver 8 setting pulses, additionally introduced counting trigger 6, elements 7 and 9, element 10, element OR 12, executive unit 12 and buzzer 14 with corresponding connections. In this case, the signaling cell 11 contains five elements And, two triggers, a pulse shaper, an OR element, an amplifier and a warning lamp. When sensor 1 of the parameter of the alarm and warning channels is triggered, the warning signal of the corresponding cell H of the alarm and the acoustic alarm 14 are turned on via the warning signal channel. After the acknowledgment, the warning lamp of the corresponding cell turns on.

11 evenly and turn off the buzzer 14. When the warning signal disappears, the device automatically returns to its original state. When sensor 1 is triggered via the alarm channel, the light detector of the corresponding cell 11 and the sound alarm 14 are turned on. After acknowledgment, the light alarm 25 is switched on with a steady light and the sound alarm 14 turns off. The disappearance of the signal does not cause a change in the state of the circuit elements. The device returns to its original state by pressing the reset button E in the absence of an alarm. The device provides priority alarm signaling, as well as checking the health of light and sound alarms. 2 Il.

The invention relates to automatic alarms, in particular to automatic alarms with individual light and general sound alerts, and can be used in process control and management systems, in particular, in systems of functional group control of starting and stopping turbines in gas, chemical, energy and other industries.

The purpose of the invention is to increase the reliability of the device and expand its scope.

FIG. 1 is a functional block diagram of a device for multipoint signaling; FIG. 2 - functional circuit of the signaling cell.

The device for multipoint alarm contains p sensors 1 parameter channels of alarm and warning alarm, reset button 2, acknowledgment button 3, health check button 4, pulse generator 5, counting trigger 6, And 7 element, setup pulse shaper 8, And 9 element, element

NOT 10, the cell 11 of the alarm, the element OR 12, the Executive unit 13 and the buzzer 14,

Cell 11 alarm consists of

5 trigger 15, element And 16, the driver 17 pulses, elements And 18-20, trigger 21, element OR 22, element And 23, amplifier 14, the light signaling device 25.

Q The device for multipoint alarm works as follows.

Let us take for the initial state of the 1 parameter of the channels of alarm and warning alarms

5 is when the value of the alarm and warning signal parameters is within the normal range, i.e. on the first and second outputs of sensors 1 parameter channels emergency

Q and alarms present signals with a level O. In the following, the operation of the device for multipoint alarms is considered on the example of triggering one, for example, the first sensor 1 of the channel parameter of the alarm and warning alarm, since the other sensors of the channel 1 parameter of the alarm channel and the trigger

Extreme alarm is similar to the first sensor 1.1 of the parameter of the alarm and warning channels. The initial state of the remote control elements (reset buttons 2, acknowledgment buttons 2, health check buttons 4) of a device for multipoint alarm consider their open (depressed) state, i.e. At the input 26 of each signaling cell 11 there is a signal with level 1, and at the input 27 of each signal cell 11. (there is a signal with level O, coming from the output of the element HE 10, to the input of which a signal with level 4 is received with a signal with level 1. After the supply voltage is supplied to the device for multipoint signaling by the driver of the installation pulse 8, a short-time signal is generated with a level O, which through the first input of the element AND 9 enters the input 20 of each alarm cell 11. This short-term signal the R-in trigger of trigger 15 (FIG. 2) sets it to its initial state, i.e., a signal with a level O is present at its direct output, which prohibits the operation of element I 20, the output of which is a signal with a level O, arriving at the input of the element OR 22, and at the inverse output of the trigger 15 there is a signal with level 1, preparing And 16 and 19 for operation. At the same time, the same short-term signal coming through the input of the element And 18 to the R input of the trigger 21, sets it into the initial condition. At the direct output of the trigger 21, a signal with a level O is input to the input of the element OR 22 (FIG. 2), and at the inverse output of the trigger 21 a signal with a level 1 prepares the elements 19, 20 and 23 for operation. level 27 input cell 11 alarm goes to the input of the element OR 22. Since the first sensor 1.1 parameter channels alarm and warning alarm is in the initial state, t, at the input 29 of each cell 11 alarm there is a signal with a level that prevents the operation elements And 16 and 19, the output of which

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There are signals with the level O, and the signal with the level O from the output of the element And 19 is fed to the input of the element OR 22 (figure 2). The presence of signals with the level O on all four inputs of the element OR 22 determines the presence of a signal with the level O at its output, which, entering the input of the element 23, prohibits its operation, i.e. At the output of the element 23 and, respectively, and at the output of the signaling cell 11, there is a signal with a level O, which, acting through the element OR 12 and the execution unit 13 on the audible alarm 14 of the device for multipoint alarm, does not trigger the audible alarm 14. This the signal with the level O, coming from the output of the element OR 22 signaling cells 11 through the amplifier 24 to the light, the warning device 25 does not cause it to turn on, just with the supply voltage to the device for multipoint signaling the pulse generator will start generating square signals with a duty cycle of 2, which during the entire operation of the device arrive at input 30 of each cell 11 of the alarm, and accordingly, at the input of element I 20, as well as at the input of counting trigger 6, which forms at its output square-wave signals with a duty cycle of 2, but with a duration two times longer than the square-wave signals of a 5-pulse generator. The rectangular signals from the output of the counting trigger bis output of the generator 5 pulses to the corresponding inputs of the element And 7, form at its output the rectangular signals with a duty cycle 4, which arrive at the input 31 of each signaling cell 11 and, accordingly, at the input of the element And 19 for the duration of the multipoint alarm device operation.

Thus, in the initial state, the warning light 25 of the alarm cell If and the buzzer 14 of the multipoint alarm device are in the off state.

Assume that the sensor 1.1 triggered the parameter of the alarm and warning signal channels for 1

in accordance with the alarm channel, i.e. At the first output of sensor 1.1 of the parameter of the alarm and warning channels, and accordingly, at the input 29 of the alarm cell 11.1 (FIG. 1), a signal with level 1 appears, which removes the prohibition from the input of the And 19 element (FIG. 2) of the alarm cell 11.1, which causes the appearance of rectangular signals with a duty cycle U at its output, and accordingly, at the output of the element OR 22 (Fig. 2), which, through amplifier 24 (Fig. 2), cause an intermittent illumination of the warning lamp 25. In turn signals from the output of the element OR 22 through the element AND 23 stumbles on the output signal of the cell 11.1, tion and through the OR gate 12 and the execution unit 13 cause intermittent operation of the buzzer 14. The intermittent glow of the light signaling device 25 and the intermittent sound of the buzzer 14 indicate a deviation of the controlled parameter outside the permissible norms. By briefly pressing the 3 kvi button, input 26 of each signal cell 11 of the alarm receives a short signal with a level of O, which switches the trigger 21, i.e. at its direct output, a signal with level 1 appears, which through the element OR 22 and amplifier 24 causes an even glow of the warning lamp 25, and at the inverse output of flip-flop 21 a signal appears with a level O, which prohibits the operation of element 25, and accordingly, the buzzer 14. Translating the light detector 25 into an even glow allows deciphering the parameter when there is an inscription on the light element into which the light detector 25 is installed, through which the warning signaling channel is triggered ii. With the disappearance of the signal with level 1 at the first output of sensor 1. 1 of the alarm and warning signal channel parameter, which corresponds to the return to the monitored parameter, the device automatically returns to its initial state, i.e. at the input element h & 19 noschupaet for 15

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signaling signal with level O, and changing the signal from level 1 to level O at input 29 of the signaling cell 11, respectively, and at the input of element AND 16 includes pulse shaper 17, the output signal of which through element 18 returns to its initial state

, trigger 21 on the R input.

Thus, when the sensor 1 parameter of the channel of the alarm and warning signal is triggered, the warning lamp 25 and the acoustic alarm 14 turn on intermittently, pressing the confirmation button 3 turns off the acoustic alarm 14 and turns off the light warning lamp 25 to turn off the disappearance of the signal in the channel of the warning signal of the sensor 1 of the parameter of the alarm and warning signal channel, is an apparatus for a multipoint signal returns to the initial state, f

When the sensor 1.1 triggers the alarm and warning channels through the alarm channel, which indicates an emergency, the signal at the second output triggered a signal with a level 1, which through the input 32 of the alarm cell 11.1 triggers the trigger 15 A signal with a level 1 appears on the C input on its direct output, which enables the operation of the element I 20 and on its output pass square signals through the input 30 of the signaling cell from the generator of 5 pulses. These rectangular signals with well 45 through the element OR 22 and

the amplifier 24 lights the flashing light 25 with a flashing light, and also goes to the input of the signaling cell 11.1 and through the element OR 12,

eg, the execution unit 13 includes an audible alarm 14, and the on and off times of the audible alarm 14 are the same. Briefly pressing the 3 button is confirmed. you trigger switching on the S-input, which translates the flashing glow of the warning lamp 25 into an even one and turns off the warning lamp 14. The disappearance of the signal from

Level 1 at the second output of sensor 1.1 of the parameter channel of the alarm and warning signal does not change the state of the warning lamp 25, since the trigger 15 and the trigger 21 do not change their state. This allows the alarm to be recorded before investigating its causes. The device returns to the initial state by briefly pressing the reset button 2, which causes the appearance of a short signal with the level O at the output of the element And 9, and accordingly, at the input 28 of each alarm cell 11, and the trigger 15 via the R-input It returns to the initial state and prohibits the operation of the element AND 20. This signal with the level coming from the output of the element 9 returns to the initial state and the trigger 21.

Thus, when the alarm channel of the parameter 1 of the channel of the alarm and warning signal is triggered, the warning lamp 25 lights up with a blinking light and, accordingly, the acoustic warning device 14 turns on, the warning alarm 3 turns into a steady light, and the acoustic alarm 14 turns off. The disappearance of the signal arriving at the device for multipoint signaling through the alarm channel does not alter the luminosity of the 25L indicator light. The warning lamp 25 continues to be a steady light. The device for multi-point signaling returns by pressing the reset button 2 on condition that there is no signal coming through the emergency channel.

alarms - i

Let's say a trip occurred.

The sensor 1.1 parameter of the alarm and warning channel channels via the warning alarm channel, which caused an even glow of the light signaling device 25 after acknowledgment (the device for multipoint alarm signaling when the warning signal channel is described above), the alarm sensor and warning channel 1.1 tripped. alarm signaling on the alarm channel. At the same time

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trigger 15 triggers pulse generator 17 through V element 16, which in turn triggers trigger 21. Next, the operation of the device for multipoint signaling is similar to that described in response to sensor 1.1 for the alarm channel parameter and the pre-alarm signaling channel.

The device for multipoint signaling works on the alarm channel in the same way as described and provided that after the sensor 1.1 triggered the parameter of the alarm and warning channels on the warning signal channel, the channel

 alarm before acknowledging the previous one.

The device for multipoint signaling also works in the same way as described and provided that after the sensor 1.1 has triggered the parameter of the channels of the alarm and warning signaling, the alarm channel has worked, and

0 emergency situation eliminated

those. the alarm signal disappeared from the alarm channel and the reset button 2 was briefly pressed, and the warning signal channel remained on5, except that from the moment the reset button 2 was pressed briefly, the device worked as if the alarm channel had been triggered.

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Claims (1)

Invention Formula A device for multipoint signaling, containing a driver of 5 pulses of the installation, alarm signaling cells, n sensors of the parameter of the alarm and warning channels, the first and second outputs of each of which are connected respectively p with the first and second inputs of the signaling cell of the same name, the third inputs of all the signaling cells are connected to the first pin of the acknowledgment button, the second pin of which is combined with the first pins of the reset button and the health check button and connected to the negative output of the power source, a pulse generator whose output is connected with the fourth entry of the signaling cell, each of which contains a first trigger, the first input of which is the fifth input of the signaling cell, and the first output is connected to the first input of the first el And, the second input of which is the sixth input of the signaling cell, and the output is connected to the first input of the IDN element, the output of which is connected to the first input of the second And element, the amplifier whose output is connected to the first output of the light signaling device, increase the reliability of the device and expand its area of application; a counting trigger, the first and second AND elements, the NOT element, the OR element, the executive unit and the audible alarm, and the second trigger, the third The fourth, fourth and fifth And elements and the pulse shaper, the second input of the first trigger is the second input of the signaling cell, and the first output is connected to the first input of the third And element, the second input of which is combined with the third input of the first And element and is the first the input of the signaling cell, the output of the third element I is connected to the input of the pulse generator, the output of which is connected to the first input of the fourth element I, the second input of which is combined with the first input of the first trigger, and the output is connected to the first input orogo trigger a second input which is the third input of cell signaling, and - the first output is connected to the second input of the OR element, the output of which is . JQ 2D 25 d 35 40 The second output of the second trigger is connected to the fourth input of the first element, And the first input of the fifth element, And to the second input of the second element, the second output of the first trigger is connected to the second input of the fifth element, And the third input is the fourth input of the signaling cell, the seventh input of which is the third input of the OR element, the fourth input of which is connected to the output of the fifth And element, the second terminals of the light signaling devices of the signaling cells are connected to the negative output of the source In the power supply, the first output of the buzzer is connected to the output of the power supply, and the second output is connected to the output of the execution unit, the output of the pulse generator is connected to the first input of the first element, And, and to the input of the counting trigger, the output of which is connected to the second input of the first element, And connected to the sixth inputs of the alarm cells, the output of the pulse generator set is connected to the first input of the second element And, the second input of which is connected to the second output of the reset button, and the output connected to the fifth cell signaling inputs, the outputs of the second elements and all the cells are connected to the signaling input OR element whose output is connected to an input actuator block, a second terminal serviceability test button is connected to the input of NOT circuit whose output is connected to the seventh input cell signaling.