SU922833A1 - Alarm - Google Patents

Description

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An alarm device relates to a fire alarm technology and can be used to protect objects equipped with signal circuits with electrical contact sensors and fire detectors, for transmitting control signals corresponding to the state of signal circuits separately and independently to control panels light and sound signaling devices.

A device for alarming is known, comprising a generator, the output of which is connected to the first input of an AC key, the second input of which is connected to the output of the signal circuit, and the output to the control input of the DC key, the signal input of which is connected to the first wire of the two-wire communication line, and the triggering input through the start-up circuit - to the generator power supply bus; the output of the DC switch is connected to the blocking input of the generator, a blocking node connected by one output to the signal conditioning unit t shouts, others - to the alarm activation unit, one output

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the generator is connected to the input of the blocking node, and the other outputs are connected to the inputs of additional AC switches and the switch inputs, the switch outputs are connected via signal circuits to the first inputs of the AC switches, connected to the inputs of the multi-input dc switch

10 current, the control input of the first control key through an additional signal circuit is connected to the first wire of the communication line, the signal input to the generator power supply bus, the output to the control input of the second control key, the signal input of which is connected via a blocking element to one of the multi-pass key inputs current, and the output to the control input of the third controlled key, the signal inputs of which are connected to the first and second wires of the communication line, the second wire of the communication line through the blocking element dklyuchen bus power generator of ge25 and to the output unit for generating an alarm signal, a control input through which the locking elements are connected to the first wire link, initiating output of block

30 alarm formations connect 3

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It is connected via interlocking elements to the inputs of the multi-input dc switch, and the outputs of the alarm activation unit are connected to the switch [Ts.

However, when this device is triggered, only one type of information — fire or intrusion — comes to the central monitoring console, while the remaining good signal circuits turn off and are not monitored by the central monitoring console for the entire time the device is in alarm mode. In addition, the device has one common light indicator on the object, so when the device switches from the “Security” mode to the “Alarm” mode, it is not possible to determine by the remote light indicator which signal circuit violated 20 caused the device to activate and which section of the protected object should be blocked by security personnel. This device is also not provided with backup power when operating in autonomous security mode, i.e. when operating without a centralized monitoring console, and does not have individual light signaling devices about the state of each signal circuit operating with the power supply disconnected.

The closest to the proposed technical solution is an alarm device, in which the first and second outputs 35 of the control unit are connected to the inputs of the signal circuits, the third and fourth outputs are connected to the first inputs of the comparison units, the first outputs of which are interrupted with the first and second inputs of the control unit, to which the outputs of the first and second signal circuits, which are directly connected 45 to the second inputs of the comparison units and n, are connected via blocking elements The first inputs of the managed keys, the third input of the control unit is connected to the generator, the second outputs of the comparison units are connected to the second inputs of the controlled keys, and the third outputs are connected to the inputs of the integrators whose outputs are connected to the inputs of the alarm generation unit, the first, second, third and fourth outputs which are connected to the corresponding inputs of the blocking node, the fifth and sixth outputs of the alarm generation unit are connected to the first and second inputs of the alarm activation unit and respectively to the first and second Lock node outputs, third and fourth outputs of which are connected to third and fourth input signal switching unit, fifth input node interlocking, 65

ki is connected to the positive power supply bus, which through the switch is connected to the third and fourth inputs of the on-signaling unit, the third inputs of the controlled keys, the fourth and fifth inputs of the control unit, the third inputs of the comparison units, the second inputs of the integrators, the third and fourth inputs of the Signal conditioning unit alarms and to the fifth and sixth inputs of the alarm activation unit; the output of the blocking node is connected to one of the inputs of the alarm unit, the remaining inputs of which are connected to the corresponding first output The unit includes an alarm, the other outputs of which are connected via a switch to the lines of the central monitoring station (CMS) [2].

The disadvantages of the known device is that it does not allow to distinguish the nature of the violation of the signal circuit and transmit this information to the centralized monitoring console, as well as to signal this on the object using light indicators. In this case, when using the device at the same time, it is necessary to install separate security sensors or fire detectors in each signal circuit at the same time to protect against intrusion and signaling a fire and to receive individual signals about the nature of the violation. This significantly reduces the efficiency of the use of signal circuits, and hence the entire device. When installed in the signal circuits of sensors of the same type, for example, firefighters, with an open signal circuit, an accidental short circuit of the signal circuit may trigger a false alarm message to the monitoring station and call the fire brigade, which is associated with certain material costs. In addition, the lack of location of the nature of the violation of the signal circuit eliminates the possibility of using one signal circuit for one type of protection, for example, from penetration, two types of sensors (short circuit and open) to determine the location of the signal circuit violation (for example, a window or door, etc. .). All this reduces the reliability of the information transmitted to the monitoring station, and the information signaling devices, and consequently, the reliability of the protection of the object by the device.

In the known device there is no control over the operation of the generator. Terminating or disrupting the normal operation of the generator during operation of the device may result in the device retaining the indication of the normal state of the signal circuits at that time.

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when the control of these circuits will not be carried out, which also reduces the reliability of the device object.

The aim of the invention is to improve the reliability of the device by ensuring the recognition by device 5 of the nature of the violation of the signal circuits and the transfer of this information to the monitoring station and light signaling devices, as well as the introduction of generator control.

This goal is achieved by the fact that 10 in the device for. Alarm system, containing the generator, signal circuits, the control node of the signal circuits, the first four inputs of which are connected to the corresponding outputs of the signal circuits, integrators, the first inputs of which are connected to the first and second the outputs of the control node of the signal circuits, the blocking node, the alarm activation block, the alarm blockades, the switch and the power supply connected to the first input of the block of the positive bus and through the switch connected to the heel and the sixth inputs of the control unit of the signal circuits, with the second inputs of the integrators and with the first and second inputs of the alarm activation unit, the third, fourth, fifth and sixth inputs of which are connected respectively to the first, second, third and fourth outputs of the blocking node by the fifth output connected to one to the input of the alarm unit, to the other inputs of which the corresponding first outputs of the alarm activation block 35 are connected, the other two outputs of the alarm activation block are connected via switches to the control panel lines the first output of the generator 40 is connected to the seventh input of the control unit of the signal circuits, the control units for the break, the control unit of the generator and the signal comparison unit are entered, the first inputs of the control blocks for the interruption 45 are connected to the third and fourth outputs of the control unit for the signal circuits, the second inputs are connected to the corresponding second inputs of the integrators, and the outputs of the break control units and the $ 0 outputs of the integrators are connected to the corresponding signal inputs. of the signal comparison unit, two control inputs of which Go connected to the switch, the first, second, third and 55 fourth outputs of the signal comparison unit are connected respectively to the second, third, fourth and fifth inputs of the blocking node, and the fifth, sixth, seventh and eighth outputs of the signal comparison unit are connected to the corresponding inputs of the alarm activation unit , while the second generator output. through the generator control unit is connected to the sixth input of the blocking node. ^ 5

A device constructed in this way provides for independent control of each signal circuit, the formation of an individual alarm signal in accordance with the nature of the signal circuit violation and its transmission separately to the monitoring station and the corresponding light signaling devices. The device also provides the control of the generator and the transmission of an alarm signal in case of a breakdown in its normal operation.

The drawing shows a functional diagram of the device for alarm.

The device contains a generator 1, signal circuits 2 and 3, node 4 control signal circuits, integrators 5 and 6, node 7 blocking, block 8 enable alarm, block 9 alarm, switch 10, power source 11, block 12 and 13 control break, - generator control unit 14, signal comparison unit 15.

Block 15 comparison of signals contains the triggers 16 and 17 short circuit and triggers 18 and 19 break, the generator 20 installation pulses, the elements OR 21 and 22 and block 23; · memory.

Node 7 blocking contains a multivibrator 24, a call blocking element 25, a bell time relay 26 and a voltage control unit 27. The alarm activation unit 8 includes actuators 28 and 29 and light alarm activation nodes 30 and 31.

The alarm unit 9 contains light alarms 32 and 33 alarms, light alarms 34 and 35 short circuits, light alarms 36 and 27 breaks and a sound alarm 38.

The first four inputs of the node 4 of the control signal circuits are connected to the corresponding outputs of the signal circuits 2 and 3, the first two outputs of the node 4 of the control signal circuits are connected to the first inputs of the integrators 5 and b.

The plus bus of power supply 11 is connected to the first input of blocking node 7 and connected through the switch to the fifth and sixth inputs of the node 4 of the control signal circuits, to the second inputs of the integrators 5 and 6, to the second inputs of the blocks 12 and 13 of the open circuit control, to the first and second inputs the alarm activation block 8, the third, fourth, fifth and sixth inputs of which are connected respectively to the first, second, third and fourth outputs of block 7, the fifth output of the alarm unit connected to one input, the other inputs of which are connected to the corresponding first block outputs

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8 switches on the alarm, the other two outputs of the block! 8 turning on the Signals through the switch 10 are connected to the console lines, centralized monitoring, and the first output of the generator 1 is connected at the seventh input of the node 4 of the control of optimal circuits.

The first inputs of the breakaway control units 12 and 13 are connected to the third and fourth outputs of the control unit 4 of the signal circuits, the outputs of the breakaway control units 12 and 13 and the outputs of the integrators 5 and 6 are connected to the corresponding signal inputs of the signal comparison unit 15, two control inputs of which are connected to the switch 10, the first, second, third, fourth outputs of the signal comparison unit 15 are connected respectively to the second, third, fourth and fifth inputs of the blocking unit 7. The fifth, sixth, seventh, eighth outputs are connected to the corresponding them to enter the unit is 8 alarm.

The input of the generator control unit 14 is connected to the second output of the generator 1, and the output is connected to the local input of the blocking unit 7.

The device works as follows.

When the device is powered on, the generator .1 receives pulses at the input of the signal circuit control unit 4, which controls the signal circuits 2 and 3 connected to its inputs and, with the corresponding outputs, outputs information about their state to the inputs of the integrators 5 and b and the inputs blocks 12 and 13 control breakage.

• If both signal circuits 2 and 3 are in normal condition, rectangular pulses are received at the inputs of integrator 5 and b, which are converted from them into a permanent signal and fed to the first inputs of short-circuit triggers 16 and 17 and breakers 18 and 19 of the comparator break 15 signals. At the same time, control voltage pulses, proportional in amplitude to current pulses in the corresponding signal circuits 2 and 3, arrive at the inputs of blocks 12 and 13 of the control of the break. The amplitudes of these pulses are analyzed by blocks 12 and 13 of the control of the break and in the case of the normal state of the signal circuits at the first outputs of these blocks, connected to the second inputs of the flip-flops 18 and 19 of the breakage of the signal comparison unit 15, a blocking signal is generated. From the second outputs of the blocks 12 and 13 of the control breakage to the second inputs of the trigger 16. And 17 short circuit unit 15 of the signal processing

no blocking signal is received at this time.

At the first outputs of the short-circuit triggers 16 and 17 and the breakers 18 and 19 of the break, signals of logical zero are generated, which are fed to the inputs of logical elements OR

21 and 22 and at the same time to the first inputs of the respective actuators 28 and 29 and nodes 30 '

31 enable light alarm unit 8 enable alarm. From the first outputs of the logic elements OR 21 and 22 'signals are received at the inputs of the memory block 23, under the action of which the latter operates

and outputs a braking signal to the multivibrator 24 of the blocking node 7, and simultaneously simultaneously removes the blocking signal from the call blocking element 25.

- The call blocking element 25 is turned on and delivers a permanent positive signal to the input of the call time relay 26, keeping it off. From the second outputs of logical elements OR 21 and

22 at this time, the signals to the input of the relay 26 call time is not given. The device switches to standby mode, in which the actuators 28 and 29 form signals

'' Norm ¹ 'and they are transmitted through the switch 10 via communication lines to the monitoring station, and the light alarm activation nodes 30 and 31 turn on the warning lamps 32 to 37 in a continuous combustion mode. The buzzer 38 is turned off.

If, after the device enters the standby mode, the signal circuit 2 is short-circuited, periodic pulses disappear at the input of the control unit 4 for the signal circuits connected to the first input of the integrator 5, and the constant signal disappears at the output of the integrator 5. At the first input of the breakaway control unit 12, the control pulses continue to be present, since current pulses in the signal circuit 2, when it is short-circuited, continue to flow. Therefore, from the first output of the breakaway control unit 11, the blocking signal continues to the second input of the breakaway trigger 18, while the second output of the breakaway control unit 12 and, therefore,. and at the second input of the short circuit trigger 16 there is no blocking signal. This leads to the fact that the trigger 16 short circuit overturns and at its outputs a signal of logical unit, indicating a short circuit of the signal circuit 2.

This signal is sent to the logical element OR 21, to the first

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the inputs of the actuator 28 and the node 30 on the light alarm. As a result, the actuator 28 generates a short circuit signal and transmits it through the switch via communication line 5 to the monitoring station, the light signaling switching-on unit 30 turns off the alarm signaling lights 32 and 34 short-circuits, the break indicator 36 continues to burn with even 10 light.

From the first output of the logic element OR 21, a signal signal violation signal is transmitted to memory block 23, which removes the tor- signal (5 from the multivibrator 24 and delivers a blocking signal to the call blocking element 25, the relaxation signal from the multivibrator 24 periodically lights through the node 30 ^ warning lights 32 and 34 and they flash.

From the second output of the logic block OR 21, a control signal is sent to the input of the relay 26 for the call time and the relay turns on the bell 38. The device 25 switches to the alarm mode. From the second output of the short-circuit trigger 16 to the fourth input of the open-trigger 10, a signal is given - blocking, which is not allows to tip over to the open break trigger 18 in case if after the short circuit the signal circuit 2 is broken.

.It is necessary to maintain permanent information received at the monitoring station. _

When the signal circuit 2 is restored, the short-circuit trigger 16 does not return to the previous state, but is held in the position corresponding to the alarm 40

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If after the transition of the device to the standby mode of operation, the signal circuit 2 is broken, then the periodic pulses at the first input 45 of the integrator 5 disappear and from its output the signal to the first input of the short-circuit trigger 16 stops. At the same time, the periodic monitoring pulses that come to the first input of the breakaway control unit 12 disappear, it works and removes the blocking signal from the second input, trigger 18, giving a blocking signal to the second input $$

trigger 16 short circuit.

This leads to the fact that the breakaway trigger 18 overturns and outputs from its first output to the input of the OR 21 gate, the second inputs of the actuator 28 and the light signaling switching on node 30 ·, a signal of the logical unit, leading to the output of the 'Break' 'through switch 10 on the monitoring station, turn on call 65

38 and the translation of the warning lamps 32 and 36, similar to that described in the flashing mode of operation. In this case, the short circuit warning light 34 is lit steadily.

Executive elements 28 and 29 do not transmit information about the short circuit to the monitoring station if they have transmitted the signal "Open" ¹ through the communication line to the monitoring station.

In all the cases described, the control of the remaining signal circuit 3 is retained. Control in the indication of the breakage and short circuit of the second signal circuit 3 is carried out similarly to that considered for the first signal circuit 2.

Periodic control pulses come from the generator 1 to the input of the generator control unit 14, at its output a constant signal is generated, which is fed to the input of the voltage control unit 27. When the oscillation of the generator 1 stops or the parameters of its output impulse abruptly change, the signal at the output of the generator control unit 14 disappears.

When the supply voltage of the device decreases or. When the signal from the output of the generator control unit 14 disappears, the voltage control unit 27 outputs ^ from its first two outputs a signal to the second inputs of the actuators 28 and 29 and the lights 30 and 31, as well as through the logic elements OR 21 and 22 to the memory unit 23, which removes the braking signal, from the multivibrator 24 and outputs a blocking signal to the first input of the call blocking circuit 25.

Simultaneously, from the third output of the voltage control unit 27, a control pulse is supplied to the second input of the call blocking circuit 25, as a result of which the blocking of the call time relay 26 is maintained and the buzzer 38 does not turn on.

The device generates ¹¹ Disconnect signals' ¹ via both communication lines through switch 10 at the monitoring station, switches on alarm flashers 32 and 33 alarms, 36 and 37 interruptions in AC supply or alarms 36 and 37 interruptions in power from a backup source direct current.

With the restoration of the output of the power supply unit 11 of the specified value of the supply voltage, the device proceeds

• to initial operation mode.

In the device, one or both of the control channels of the signal circuit can be turned off using the switch 10. For example, turning off the signal circuit 2 is done by removing 11

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supply voltage from the part of the node 4 control of the signal circuits of the executive element 28 of the node 30 of the inclusion of light signaling and supplying a fixed potential to the integrator 5 and the block 12 monitoring the break. 5 At the same time on the monitoring station. on the communication line, a signal about the breakage of the corresponding signal circuit is transmitted and the warning lamps 32, 34, 36 are turned off. The short circuit triggers 16 and the breaker U 18 remain in the state corresponding to the duty mode of the device. The rest of the device is in working condition and monitors the signal circuit 3.

Switching 10 of any control channel of the signal circuit is accompanied by the impulse supplying voltage to the generator 2.0 setting pulses, which sets the memory unit 23 and the triggers 16 to 19 to the initial state. If the signal circuit of the switched-on channel turns out to be faulty, the block 23 of memory supplies the blocking signal to the call blocking circuit 25, the time relay 26 does not turn on and the buzzer 38 does not work. Suppose that the signal circuit 2 is broken, then from the trigger 18 open circuit and short circuit 16 will not send a control signal to the executive unit 28 and the light signaling switching on node 30. Element 28 sends a signal to the communication line "Open circuit." The multivibrator 24, not having the input signal, the braking signal from the memory block 23, will periodically in Switch on the light-switching unit 8 The warning lights .32 and 36 flash for 40 seconds.

The device is reset to the initial state by turning it off and then turning it on again. 45

When the device operates with a backup power source, the state of the signal circuits is monitored similarly to that considered, but the alarm 32 and 33 alarms and the acoustic alarm 38 powered by the AC mains do not work.

The proposed device allows. ,, to conduct round-the-clock independent monitoring of each signal circuit with the formation of an individual alarm signal and its transmission separately to one central monitoring station or to two independent ones. Moreover, the device distinguishes the nature of the signal circuit violation and transmits this information to central monitoring panels and also signals on the object about the nature of the violation of the signal circuit with the help of light signaling devices.

This allows you to use one signal circuit of the device at the same time to protect against intrusion into the object and to signal the occurrence of a fire, as well as to increase the reliability of information transmitted to the monitoring station when using the signal circuit only for signaling a fire.

Claims (1)

Claim An alarm signaling device comprising a generator, signal circuits, a signal circuit monitoring node, the first four inputs of which have connected the corresponding signal circuit outputs, integrators, the first inputs of which are connected to the first and second outputs of the signal circuit monitoring node, an alarm unit, a switch and a power source connected by a positive bus to the first input of the blocking node, and through a switch connected to the fifth and sixth inputs of the control unit of the signal centers it, with the second inputs of the integrators and with the first second inputs of the alarm activation unit, the third, fourth, fifth and sixth inputs of which are connected respectively to the first, second, third and fourth outputs of the blocking node, the fifth output connected to one input of the alarm unit, to other inputs which are connected to the corresponding first outputs of the alarm activation unit, the second outputs of which are connected via a switch to the lines of the centralized monitoring console, and the first output of the generator is connected to the seventh input the control node of the signal circuits, characterized in that, in order to improve the reliability of the device, the break control unit, the generator control unit and the signal comparison unit are entered into it, the first inputs of the break control units are connected to the third and fourth outputs of the control circuit of the signal circuits, the second inputs combined with the corresponding second inputs of the integrators, and the outputs of the blocks, monitoring the break and the outputs of the integrators are connected to the corresponding signal inputs of the signal comparison unit, two control inputs of which are connected to the switch, the first, second, third and fourth outputs of the signal comparison unit are connected respectively to the second, third, fourth and fifth inputs of the blocking node, and the fifth 13 922833 14 the sixth, seventh and eighth outputs of the signal comparison unit are connected to the corresponding inputs of the alarm activation unit, while the second generator output is connected to the Neck through the 5th input of the blocking node through the generator control unit.