SU1016806A1 - Fire protection device - Google Patents

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FIELD OF THE INVENTION The invention relates to fire protection devices for the detection of ultraviolet radiation from gas-vapor-dust-air mixtures, solid and liquid combustible materials. CONDITIONS of high background and industrial noise, and can be used as an instrument for recording fire and actuating actuating electromechanical devices in the fire anthomical systems; A device is known; 1: a fire protection device containing a sensitive element connected to the input of the first amplifier ;, a pulse generator connected to the input of a pulse counter, a time relay connected to a trigger, a generator, pulses, a SECOND amplifier, connected: through a transformer and a switch to a pulse counter,: and a signal-start unit, .connected to a pulse counter Clli. A disadvantage of the device is the limited functional capacity of the device due to the impossibility of monitoring the operability of the device. Closest to the proposed technical essence is a device for fire protection, contains a sensitive element (photon counter) connected to; the input of the amplifier, the output of which is connected to the input of a shot-coB shaper, the output is coigorously connected to the first input of the counter and the pulses, to the second input of which the time relay is connected, and the outputs of the impulse counter are connected to the input of the electron. key and to the first input trigger .a, the second input of which is connected to the output of the time relay, and the output to the input of the integrator, the output of which is connected to the t2X signaling device. The device has a limited functionality because it is absent Uncovering the type of device malfunction: an open circuit or short circuit of a wire line between, a flame sensor, consisting of a sensitive element and an amplifier, and the rest of the device units integrated into the secondary device. The purpose of the first claim is to disregard the functional capabilities of the device. The target is achieved by the fact that the fire protection device containing a sensitive element connected via an amplifier to the driver: pulses, a time relay, the first output of which is connected to the first input of the pulse counter, and the second output to the first trigger input, the first output of the pulse counter is connected to the actuator, and the second output is connected to the second input of the trigger, the output of which is connected to the input of the integrator, and the malfunction indicator, two inverters are introduced, the malfunction indicator Yen in the form of TWO failure alarm units, the input of the first inverter is connected to the output of a pulse shaper, and the B1 input with the second pulse counter input and the first input of the first flea fault alarm, the first input of the second fault alarm unit connected to the second inputs of the pulse shaper, the second inputs of both blocks The alarm signals are connected to the output of the second inverter whose input is connected to the integrator output. FIG. 1 is a block diagram of the fire protection device of FIG. 2 is a fragment of a scheke, which explains the operation of the device for the crimping of the line of tear; in fig. S: is a fragment of the scheme that explains the operation of the device for a short distance to the line of communication. :, l An anti-scalar protection device contains a sensor 1, consisting of a sensitive element 2 (photon counter) and amplifier 3, line 4, secondary interface 5, states of the impulse generator b (electronic circuit of the final stage of the Forms. b in FIG. 2 and 3 are not listed), the first inverter 7, the counter 8 and the pulses, the 9-time relay, trigger 10, the integrator 11, the second inverter 12, the malfunction signaling unit 13 (short circuit) and the malfunction signaling unit 14 (line break). The input stage of the voltage driver b is made with feedback on the resistor 15, the covering transistor 16.. The device works in the following way. In the absence of sunbathing senses -. The body element 2 generates separately. The so-called. Background shots. When a flame is detected, the frequency C the number of) pulses generated by a malignant 2 depends on the intensity of the ultraviolet-flame radiation. The first pulse arrives at the amplifier 3 and further along the wired link 4 to the driver 6 of the pulses. From the first output of the driver, the 6.signal goes to the malfunction signaling unit 14 (line break), from the second output to the input of the first inverter 7, and from the output of the first inverter 7 to the second input of the pulse counter 8 and to the first input of the malfunction alarm unit 13

(short title). The time relay 9 operates in the automatic mode. If the time relay 9 emits a resolution signal on the first input of the counter 8 pulses, then in the sensor 8 impulses the pulses received from the inverter 7 are counted.

If the given selection interval, the duration of which is determined by the parameter "time relay 9", from the SF 2 through the amplifier 3, the driver, b and the inverter 7, counts the pulses 8 and receives a defined (specified) number of pulses, then the signal from the first output of the counter B pulses enters through the amplifying path (not shown in Fig. 1) to the actuating device. The system is fireproofed. If the selected time interval for the counter 8 pulses the number of pulses, then the time relay 9 resets the counter of 8 pulses.

In the process of registering pulses with a counter 8 pulses from its second output, the signal is fed to the input of Trig | Gera 10, as a result of which; Trigger 10 overturns, and the potential on the integrator I is instantly restored to a voltage value; pi. tani. When a pulse of its pulse was received from the second output of relay 9, my trigger trigger 10 overturns into an initial state, and the potential of integrator 11 begins to slowly decrease. With revenues: from the counter of 8 pulses of a new pulse generated by element 2, the cycle repeats again. The time interval between the background of the pulse is about 1–4 ci period and the pulse is 0.1–0.25 cj after the time during which the potential on integrator 11 decreases more than twice, choosing ––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––– . within . 0.5-2 No. 1H. Therefore, with Cor. Because of the gift of h & new pulses, the potential at integrator 11 will be maintained at all levels of the power supply voltage, and there will be no control signal at the output of the second inverter 12 BUD.

In case of any malfunction (breakage or short circuit of the wire link 4 between the flame sensor 1 and the secondary device 5), only pulses from the time relay 9 affect the input of the zigger 10, the trigger 10 the performance of a gradual drop in voltage; the output of the integrator 11; after 0.52 miN, the voltage at the output of the integrator 11 will decrease so much that it will control the cadim pulse for the second inverter 12 and, respectively, for the second inputs ofkjHX of the fault signaling units 13 and 14.

The input FSC Mirovatl 6 is designed so that when the link LINE 4 is broken (Fig. 2), due to polkitelnoy feedback from the power source (not shown), through the reistor 15, the control signal is transmitted to the base of transistor 16, corresponding to logical 1. Electronic The circuit of the driver 6 is designed in such a way that on the output there also appears the potentials of the signals, while the corresponding logic at the output of the inverter 7l Ligial is absent. Therefore, the signal of a malfunction. POST is transmitted to the first input of block 14 (termination of NITN1. - -.,:::: ,,. /

With a short lingin 4

St: zi ffig. 3) to the common bus pot.yon-: the input and output of the formate 6 corresponds to the logical; ok O: and the output of the inverter 7 is lohadg ssgoy 1. Therefore, the malfunction signal goes to the first input of the malfunction alarm unit 13 (short saMtJKaHHe). ..

In practice 5: as elements: sensor 1 can be used as sensor Sensitive element 2, amplifier n Forkshrovatel 6 or only one sensitive element 2.

Claims (1)

i (5 7) FIRE PROTECTION DEVICE -> _f NOVA PROTECTION, containing a sensor connected via an amplifier to a pulse shaper, a time relay, the first output of which is connected to the first input of the pulse counter, and the second output to the first input of the trigger, the first output of the counter is connected to device, and the second output with the second input of the trigger, the output of which is connected to the input * integrator. siren, and a malfunction indicator, on the other hand, in order to expand the functional capabilities of the device, two inverters were introduced, the malfunction indicator is made in the form of two malfunction signaling units *, the input the first inverter is connected to. the output of the pulse shaper, and the output with the second input of the pulse counter and with the first input of the first block of the fault alarm, the first input of the second block of the fault signal is connected to the output of the Pulse driver, the second inputs of both blocks of the fault signal are connected to the output of the second inverter, the input of which is connected to the output integrator.