SU942084A1 - Alarm - Google Patents

Description

(54) DEVICE FOR ALARM ALARM

one

The e-veterinary equipment relates to fire alarm devices and can be used to guard objects equipped with signal circuits with electrical contact emitters, transmit alarm signals on a centralized monitoring station (CMS), and also control the light and sound signaling devices on the facility. .

An alarm device is known that contains 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 switch, the signal input of which is connected to the first wire two-wire inip connection, and the triggering input through the start-up circuit to the generator power bus, the output of the dc switch is connected to the blocking input of the generator, the blocking node connected by one output to the unit

generating alarms, others to the alarm activation unit, one generator output connected to the input of the blocking node, and other outputs to the inputs of additional AC switches and inputs of the switch, the switch outputs through the signal circuits connected to the first inputs of the AC switches, connected to the inputs of a multiple input dc key

10 the control input of the control key is connected via an additional signal circuit to the first wire of the communication line, the signal input to the generator power terminal, the output to the control key

15 to the input of the second controllable key, the signal input of which is connected to one of the inputs of the multi-input dc switch through the blocking element, and the output to the controller at the input

Claims (2)

20 of the third controllable key, the signal inputs of which are connected to the first and the second wires of the communication line, the second wire of the communication line is connected to the generator power supply terminal and to the output of the alarm control unit through the locking elements of the control unit via the blocking element The signal to the first wire of the communication line, which triggers the output of the alarm generation unit, is connected through the blocking elements to the inputs of the multi-input switch nocTosnmoro current, and the output of the alarm activation unit is connected to the switch l.  This device does not provide special measures that eliminate the effect of leakage resistance between the wires of the signal circuits.  Leakage resistance disrupts the normal functioning of the device and impairs its reliability.  Each device node performs only one function, so the device has increased complexity.  Such a device can be powered from the communication line only if only a constant voltage of a certain polarity is present on the communication circuit.  At the same time, the device consumes a significant amount of current from the communication line, since it contains not only signal circuits, but also blocks of the device itself (generator, control keys, etc.). ).  The communication lines of most types of centralized monitoring pulses are low-current or they have alternating or pulsed voltage, as a result of which this device cannot work with these consoles.  The closest to the proposed technical dryness is an alarm signaling device containing a generator, first and second signal circuits with accumulative elements made on capacitors, a signal circuit control unit, consisting of a control unit, comparison units, interlocking elements and controls keys, integrators, switches, alarm generation unit, blocking node, alarm activation unit, alarm unit, and power supply unit.  The first and second outputs 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 connected to the first and second, respectively, by the interlocking elements of the control unit to which the first and second signal outputs are connected the circuit which is directly connected to the second inputs of the comparison units and the first inputs of the controllable keys, the third input of the control unit is connected to the generator, the second outputs of the comparator blocks are connected Adjacent to the second inputs of the controlled keys, and the third outputs to the inputs of the integrators, the outputs of which are connected to the inputs of the alarm unit, the first, second, third and fourth outputs of which are connected to the corresponding inputs of the interlock unit, the fifth and sixth outputs of the block the alarm signals are connected to the first and second inputs of the alarm activation unit and, respectively, the first and second inputs of the blocking node, the third and fourth outputs of which are connected to the third and fourth inputs of the signal activation unit The idle, fifth input of the blocking node is connected to the positive bus of the power supply unit, which through the switch is connected to the third and fourth inputs of the signaling switching unit, the third inputs of controllable 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 Shaped Alert alarm unit, 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 connect enes to the corresponding first output of incorporation signaling, other output is connected through a switch to the lines putEta centralized observation 2}.  This device does not provide special measures that eliminate the effect of leakage resistance between the wires of the signal circuits.  This leakage resistance impairs the storage properties of capacitors in the signal circuits, disrupts the normal operation of the device, and therefore is often the cause of a false alarm register, which reduces the reliability of the device.  This device is powered by an alternating current network and a backup direct current battery.  However, there are a number of difficulties in using the battery.  First, the batteries must be installed in separate rooms specially equipped for this purpose.  Bo- “TOi ix, you need periodically sapsDKaTb batteries.  The use of dry batteries is expensive and economically impractical.  Therefore, as practice shows, working with such facilities, they are operated in most cases without a backup power source.  When the AC mains voltage fails, this device triggers an alarm signal to the central monitoring station (CMS).  In this case, the signal circuits of the device are not controlled.  This leads to a decrease in the reliability of the protection of objects and to the false calls of divisions of the militarized guard.  Each device node performs only one function, as a result of which the device has increased complexity and, consequently, reduced reliability. The purpose of the invention is to increase its reliability of the device and expand its functionality.  The goal is achieved by the fact that the alarm device connected to the communication line and the contained power supply unit, a signal circuit, an integrator, switches, time relays, controllable keys, an end element, a unit fof v "form the alarm signal, connected first an output with the first input of the alarm activation unit, and a signaling device unit connected by inputs to the corresponding outputs of the alarm activation unit, a signal leakage current compensation unit is inserted; The time unit, summation unit, inverter and DC amplifier, the output of which is connected to the input of the first switch, the first output of the second switch is connected to the input of the DC amplifier and the first input of the time relay, the output of the first switch is connected to the first inputs of the alarm generation unit, the second switch, the time relay inputs and the switch-on unit of the signaling device and through time the second unit's second input switch, the first power supply unit output is connected to the second input of the alarm, to the third input of the alarm enabler unit and through successively connected inverter and leakage current compensation unit of the signal circuit to the first input of the summing unit, the second output of the power supply unit to the fourth input of the alarm enabler unit, the second output of the alarm generation unit the circuit with the second input of the summing unit, the output of which is connected through the integrator to the third input of the second switch, the output of the second switch is connected to the third input of the form unit Signaling the alarm and the fifth input of the alarm activation unit, the output of the time relay is connected via the third switch with the sixth input of the signalization switching unit, the third output of the alarm generation unit is connected to the control input. the first control key and its fourth output to the control input of the second control key, the communication line is connected via the first control key to the fourth input of the alarm generation unit and through the second control key to the end terminal.  The drawing shows the functional diagram of the device for alarm with gnalizatsrs.  The alarm device contains a power supply unit 1, a signal circuit 2, an integrator 3, switches 4-6, time relays 7, controlled ones 8 and 9, an output element 10, an alarm generation unit 11, an alarm unit 12, an alarm unit 13 , cocking-out unit 14 of the leakage current of the signal circuit, time given block 15, summing-up block 16, inverter 17, direct current amplifier 18, OR 19, HE elements 20 and 21, AND elements 22-26, buzzer 27, warning light 28.  The element OR 19, the elements NOT 2О and 21, the elements AND 22 and 23 form the alarm generation block 11, and the elements AND 24 - 26 block the alarm turn-on 12.  A line 29 is connected to this device with a central monitoring console.  The device operates in three modes: standby mode, mode VOP1 and de-energized mode.  For convenience, we consider these modes separately.  In standby mode, when the state of the signal circuit wires, as well as the output contacts of security or fire detectors included in it, is located within the normal range, the device operates as follows.  The power supply unit 1 forms, at the first output, a variably varying voltage of the PC dees the voltage, and at the second output - a single pulsed voltage.  The voltage acting at the outputs of the Gstatach block 1 can be any form, in particular, a rectangular square wave OR a sinusoidal one.  At the same time, the voltage acting on the second output of the unit is a voltage rectified by a single component voltage acting on the first output. The signal unit is a two-wire line with series-connected normally closed fire contacts or security sensors and with a terminal control element having different electrical conductivity depending on the current flow direction of the signal circuit.  The terminal control element of the signal circuit can serve as a semiconductor diode.  Thus, due to the terminal control element, the signal circuit 2 possesses superior properties in standby mode.  However, the leakage resistance of a signal circuit, turned on in parallel with its terminal control element, degrades the rapid properties of the entire signal circuit, which, starting with a certain value of this resistance, can lead to a false alarm recording by the device. e.  the device can go into alarm mode.  In order to eliminate the influence of the leakage resistance of the signal circuit, an inverter 17, a compensation unit 14 and a summing unit 16 are introduced into the alarm device.  Inverter 17 changes the phase of the voltage that occurs at the first output of power supply 1, by 180.  The leakage current compensation unit 14 of the signal circuit generates a current at the output that changes according to the same law that changes that part of the current in the signal circuit, which is caused by the presence of leakage resistance in it.  However, the phase of the output current of the compensation unit 14 differs by 180 from the phase of the current in the signal circuit 2.  The inputs of the summing unit 16 receives a current from the signal circuit 2 and the current of the compensation unit 14.  As part of the current in the signal circuit 2, which is caused by the presence of leakage resistance in it.  And the OUTPUT current of the leakage current compensation unit 14 of the signal circuit varies according to the same laws, but their phases are opposite, then in the summing unit 16 they are mutually compensated, therefore, the signal of the signal circuit without that part, which is due to the presence of resistance, is present on the VE code of the summing unit 16 signal leakage.  Thus, the output of summing unit 16 is not affected by the leakage resistance of the signal circuit.  The voltage acting on the first output of the power supply unit 1 is supplied in standby mode to the input of the inverter 17 and to the second input of the unit 11 for generating an alarm signal.  In block 11, the signal enters through the element OR 19 to the second output of block 11.  From the second output of the blocker 11, a different polar signal arrives at the input of the signal circuit 2, where it is superior to its terminal control element and arrives at the second input of the summed-up unit 16.  The first input of the summing unit 16 receives a signal generated by the compensation unit 14 and changing according to the law, according to which that part of the current in the signal circuit 2, which is caused by its leakage retention, but with the opposite phase, changes.  In the summing unit 16, the current generated by the leakage current compensation unit 14 of the signal circuit and the part of the current of the signal circuit 2 due to its leakage resistance are mutually compensated.  The output current of the signal circuit 2 acts at the output of the summing unit, but without that part of it, which is caused by the leakage resistance.  The signal from the output of the summing unit 16 is fed to the input of the integrator 3, where the pulsation of the measured current is smoothed.  The constant voltage from the output of the integrator 3 is fed to the third input of the second switch 5.  In standby mode, the constant voltage from the third input is fed to the first output of the second switch 5, the signal at the second output of the second switch in the standby cut is absent.  The constant voltage from the first output of the second switch 5 is fed to the input of the DC amplifier 18, where it is amplified, and then to the input of the first switch 4.  In the standby mode, the output of the first switch 4 is acted upon by a constant logic signal, which is fed to the first input of the module 11, to the second input of the signaling switching unit 12, the second input of the time relay 7, the first input of the second switching unit 5, and to the input of the dropping block 15 .  In standby mode, the second input of the second switch 5 is not connected to any of its outputs.  BBEF, there is no signal at the second output of the second switch 5 at the fifth input of the alarm activation unit 12, the logic O signal is valid.  Consequently, one of the inputs of the element And 24 and the element And 25 has a logical O signal, therefore there is no signal at the outputs of the elements 24 and 25.  The absence of signals to these signals that the audio output means that the dispenser 27, the congestion signals entering block 13 is in silent mode, and the two-pole voltage from the first output of power supply block 1 does not enter the light indicator 28, also the input to the block 13 signals c.  Since the logical signal 1 signal acts at the output of the first switch 4, the logical signal 1 signal also acts at the second input of the signaling switching unit 12.  Therefore, the pulsating voltage acting on the second output of power supply unit 1 is fed through element I 26 to the input of a light signaling device.  28, the wizard indicates that the device is in standby mode.  Due to the fact that the second output of the second KOMMyraTqpa, and consequently, the input element 21, the input $ 11 in block 11, there is no signal (logical O), then the output element 21 is a logical signal 1.  At the inputs of AND 23, a logical signal acts, so a logical I signal appears at its output, which is fed to the control input of the key 9.  Under the action of the control signal, the key 9 connects the communication link 29 to the output element 1O.  At the input of the element NOT 20, a signal of logical 1 is received from the output of the first switch 4, therefore, at the output of the element - NOT 20 there is no signal (logical O).  Then, at one of the inputs of the And 22 element, there is also no signal, which means that there is no signal at its output, therefore, the signal for switching on the key 8 does not appear.  When a logical 1 signal appears at the output of the first switch 4, time relay 7 generates a logical signal, which is fed to the input of the third switch 6.  The third switch also generates a logical 1 signal at its output, which is fed to the sixth input of the block 12 on 1 Signalization of the signaling.  However, the element AND 24, the input of which is included in the signaling unit 12, does not give a signal to turn on the acoustic signaling device 27, which is part of the signaling device unit 13, since the logical O signal operates at the output of the second switchboard.  Alarm mode  The device goes into alarm mode in the event of a firefighter or a security detector connected to the signal circuit, or if the integrity of the wires of the cross-link target 2 is violated (or short-circuited).  With the lead of the signal circuit 2, the voltage disappearing at its output is rectified by its terminal control element.  This leads to the fact that the output of the summing unit 16 also disappears voltage, despite what is on. The first input of the summing unit 16 of the signal of the leakage current compensation unit 14 of the signal circuit is present, since the magnitude of this signal is much smaller than the signal received in standby mode at the second input of the summing unit 16 of the signal circuit 2.  The absence of a signal at the output of the summing unit 16 leads to the disappearance of the DC voltage at the output of the integrator 3, and this, in turn, causes the signal to disappear at the first output of the second switch 5, at the output of the DC amplifier 18, and at the output of the first KONtMyTaTOpa four.  When the LOPG signal O at the output of the first switch 4 is left out, the second switch 5 disconnects the third input from the first output, and the first output with the second input generates a logical 1 signal at the second output and fixes it in this position.  In this case, the time of the master unit 15 is included in the positive feedback circuit of the dc ussaggel 18, which leads to the most common circuit in the circuit: the dc utilizer 18 is the first switch 4-speed set-unit 15-second switch 5.  As a result of the occurrence of this genie at the output of the first switch 4, the logic signals O and 1 alternate.  When a logical 1 signal is applied at the output of the first switch 4, then one short circuit of the outputs of the element 26, the input of your unit into the switch-on unit 12, is signaled by a logical signal 1, and the other input of this element receives a pulsed voltage from the second output of the power supply unit 1 .  This pulsating voltage is applied to the output of the element AND 26 and the luminous glow of the Tfcpa 28 half-channel vibrates.  The bipolar voltage acting on the first output of power supply 1 does not arrive at the output of the AND 25 element, since during the operation the output of the first switch 4 of the logical signal, the output of the HE element 20, the input of the logic block 11, and therefore , at one of the inputs of the element And 25 signal is valid logical O.  When a logical O is placed at the output of nefh switch 4, the pulsating voltage from the second output of power supply 1 does not reach the output of element 26, since one of its inputs has a logical O signal at that time.  However, at this time, & l on all three inputs of element 25, a signal appears, thereby reducing the different stresses from the first output of power supply unit 1 to the input of the light signaling device 28, as a result of which it shines in full heat.  Thus, in the case of a device registering an alarm signal, the warning lamp 28 is in a flashing mode.  When a logical signal appears at the second output of the second switch 5 at all inputs of the element 24, the voltage goes from the bottom, as a result of which the different voltage from the first output of the power supply unit 1 goes to the sound alarm 27, which switches to the sound mode.  At the same time, the logical O signal from the first output of the second switch.  5 is fed to the first time relay input 7, which, under the action of this signal, after a certain period of time, forms a logical O signal at its output.  Under the action of this signal, the third commutator 6 also generates at the output a signal of logical O, which is fed to one of the inputs of the element 24.  As a result, the supply of voltage from the first output of the power supply unit 1 to the buzzer 27 stops.  Thus, turnkey time 7 determines the sound time of the buzzer 27 in the case of an alarm device registered by the alarm device.  The logical signal, which is connected to the second output of the second switch 5, is fed to the input of the HE element 21, the logical O signal appears at the output of the second one.  The logic signal O comes from the output of the element HE 21 to the inputs of the elements AND 22 and 23, the output of which also forms the signal of the logical O, which arrives at the control inputs of the keys 8 and 9.  In the absence of signals at their control inputs, the keys 8 and 9 are in the open / 1-closed state.  Therefore, line 29 of the communication device for alarm monitoring with the monitoring station is open.  This forms an alarm signal to the monitoring station.  De-energized mode.  In the de-energized mode at the output of the first switch 4 and the second output of the second switch 5, the logic O signals are acting.  Since the signal of a logical U acts at the input of a logical element NOT 21, then the signal of logical 1 acts at its output and, therefore, at the second inputs of the AND 22 23 elements.  At the output of the element And 23 signal is missing, since the first input element And 23 23 acts signal logical O.  This means that key 9 is in the open state, therefore line 29.  connection is disconnected from terminal 1O.  So at the input of the element NOT 20 the signal of logical O acts in the de-energized mode, then at its output, and consequently, the signal of logical 1 acts on the first input of the element And 22.  At both inputs of the element And 22 then there is a logical signal, therefore, its output is also affected by the signal of logical 1, which is fed to the control input of the key 8.  In this case, the key 8 is in the closed state, so the voltage supplied from the central monitoring console via the communication link 29 is applied to one of the inputs of the OR 19 element.  At the same time, there is no signal on the other of its inputs, since in the de-energized mode at both outputs of power supply unit 1 there is also no signal.  The voltage supplied to the unit from the inputs of the OR 19c element of the controllable key 8 is fed to the output of the OR 19 element and, therefore, to the signal circuit 2.  Thus, line 29 of the communication device with the monitoring station is connected through a control key 8 and the element OR 19 to the signal circuit 2.  Therefore, the 2 k signal circuit is controlled in a de-energized mode directly from the console, the center of observation.  The use of the new elements of the compensation unit, the time of the locking unit, the summing unit, the inverter and the DC amplifier, as well as new connections favorably distinguishes the proposed device for alarming ot known, since its reliability has increased and its functionality has been expanded Reliability The proposed alarm device has increased due to the fact that it has eliminated the possibility of false triggering due to the presence of leakage resistance in the signal circuit.  The reliability of the alarm signaling device has also increased due to the simplification of its circuitry due to the combination of the functions of its unit group: a DC amplifier, first and second switches.  In the standby mode, this group of blocks performs the function of monitoring the signal circuit and, in alarm mode, the generator function, which ensures that the device functions in this mode. mode.  The proposed device has enhanced functionality, since it allows guarding the object in de-energized mode, loading the signal circuit directly to the communication line of the device with the centralized monitoring console.  This eliminates the cause of false alarms when the power supply voltage drops.  Claim device An alarm device connected to a communication line and containing a power supply unit, a signal circuit, an integrator, switches, a time relay, controllable keys, an output element, a signal generation unit connected to the first output of the master signal input unit , and a block of signaling devices, connected by inputs to corresponding outputs of an alarm activation unit, characterized in that, with a chain, determine the reliability of the device, a block of leakage current of the signal circuit is inserted into it, time master unit, summing unit, inverter and direct current amplifier whose output is connected to the output of the first switch, the first output of the second switch connected to the input of the direct current amplifier and the first input of the time relay, the output of the first switch connected to the first inputs of the alarm generation unit the second switch, the second inputs of the time relay and the alarm activation unit and through time the master unit with the second input of the second switch, the first output of the power supply unit is connected to the second input of the power supply unit alarm signaling, to the third input of the alarm activation unit and through the inverter and leakage current compensation unit of the signaling circuit to the first input of the supp unit, the second output of the power supply unit to the fourth input of the alarm activation unit, the second output of the alarm generation unit a circuit with a second input of the summing unit, the output of which is connected through the integrator to the third input of the second switch, the second output of the second switch is connected to the third input the alarm generation unit and the fifth input of the alarm activation unit, the time relay output is connected via the third switch with the sixth input of the alarm enable unit, the third output of the alarm generation unit is connected to the control input of the first control key, and its fourth output the control input of the second control key, the communication link is connected via the first control key to the fourth input of the alarm generation unit and through the second control key to the output element.  Sources of information taken into consideration during the examination 1. USSR Author's Certificate No. 563684, cl.  G08 13/00, 1974.   2. USSR author's certificate according to application No. 2725562 / 18-24, class, GO8 B 13/00, 1970 {prototype).