SU922841A1 - Multipoint indication device - Google Patents

Description

The invention relates to use in processing plants for various purposes, in particular for a light and sound alarm when the closure process sensors contacts mounted on kontrolya- ⁵ Rui technological object.

A device for multipoint signaling is known, containing parallel light signaling cells ^ each of which consists of ^{, 0} · process contact connected to a signal lamp, a load resistor in series and a thyristor with a resistor in its control circuit, an alarm check button ¹⁵ connected through isolating diodes to signal lamps, an OR gate whose inputs are connected to outputs of cells, and the output - to the bell, and a diode ring prover- _m ki, one electrode of which is connected to the book Alarm checkout [13,

The disadvantage of this device) "is that after the closure and 2

the next breakdown of the technological contact, the corresponding lamp and the acoustic warning lamp are on up to the moment. pressing the handshake button, which leads to an extra light and sound background in the room, an electrical overrun, as the closure of the technology, contact is eliminated, and the pulse generator, the buzzer and warning lights are on.

Closest to the proposed technical entity is a device for multipoint alarm, containing a pulse generator, parallel to which a detector is connected, one common point is connected to the positive power supply bus, a starting thyristor, the control electrode of which is connected to one output of the first resistor, a handshake button, signaling cells, each of which is made on series-connected technological sensor, signal lamp and thyristor, the second resistor through

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make contact is connected to the positive power supply bus, the thyristor anode is connected through the first diode in series and the disconnecting contact of the pulse generator is connected to the power supply negative bus, the stationary contact of the process sensor is connected to the positive power key 10 Verification of the alarm and the second diode is connected to one output of the capacitor, in each cell of the alarm the second re-Eistor through the third diode is connected to the control conductive electrode thyristor secondary "swarm output capacitor via a fourth diode - to the other terminal of the first resistor, a cathode of the first diode connected in series through the fifth diode and the third resistor - to the anode of the fourth diode _m, another common pulse generator and signaling point through serially connected acknowledgment button and starting thyristor break contact - with negative bus 25

power supply (2).

A disadvantage of the known device is that when the contacts of the technological sensor are disconnected, the ₃ θ pulse generator and the pulse detector remain on.

Nel invention - improving the efficiency and reliability of the device.

This goal is achieved by the fact that in the device for multipoint ³⁵

signaling comprising signaling cells, each of which is formed on the series-connected between the power supply rails process sensor, and the signal lamp tiri- Store ^40, the first diodes, the anodes of which are connected to the anode of the thyristor of each signaling cell, the cathodes of the first diodes connected in a single point, the second diodes, the cathodes of which are connected to the ⁴⁵ point of connection of the technological sensor and the signal lamp, the anodes of the second diodes are connected at one point, the first resistors, the first terminals of which are connected at one point, g Pulse generator ^{50 s} , the first input of which is connected to the first power supply, signaling device, resistors, capacitor, key thyristor, auxiliary start thyristor, checker, pulse voltage source, the first output of which is connected to the second power supply bus and to the unit input checks,

The first output of which is connected to the anodes of the second diodes, the second output of the testing unit is connected to the first terminals of the first resistors, the second terminals of which are connected to the control electrodes of the thyristors of each alarm cell, the cathodes of the first diodes are connected to the control electrodes of the starting and additional starting thyristors and directly to the anode of the key thyristor, whose cathode is connected to the second output of the pulsating voltage source and to the cathode of the additional starting thyristor Ora, the anode of which through the detector is connected to the third output of the test unit and to the anode of the starting thyristor, the cathode of which is connected to the second input of the pulse generator,; the output of which is connected to the control electrode of the key thyristor, a fourth resistor is connected parallel to each signal lamp between the inputs of the pulse generator and a capacitor is connected.

The drawing is a schematic diagram of the device.

The device contains a signaling cell 1, a pulsing voltage source 2, a power source 3, a pulse generator 4, a key thyristor 5, a starting thyristor 6 with a resistor 7 in the control circuit, a signaling device 8 with an additional starting thyristor 9 and a resistor 10 in the control circuit, test block 11 diodes 12 and 13 of the capacitor 14.

Cell 1 alarm contains a technological sensor 15, a resistor 16, a signal lamp 17, a thyristor 18 with a resistor 19 in the control circuit.

The device works as follows.

The contact closure of any technological sensor 15 causes the supply of voltage to the control electrode of the starting thyristor 6 through the circuit: contact of the technological sensor 15, signal lamp 17 and in parallel connected resistor 16, diode 13 and resistor 7.

At the same time, the same signal through the resistor 10 is supplied to the control electrode of the thyristor 9, the starting thyristor 6 and the thyristor 9 are opened, including the generator of 4 pulses and the signaling device 8. In case of a signal burnout 17, the signal passes through re-eistde 16 and the signaling device 8 turns on.

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The output of the generator 4 pulses is connected to the control electrode of the CLK> thyristor 5. The signal lamps 17 flash with a flashing light along the peep; Closed contact of the process sensor 15, 5 signal lamps 17, diode 13, key thyristor 5, pulse voltage bus. When the key thyristor 5 is locked and the contact of the technological sensor 15 is closed, the positive potential of the thyristor 6 and the thyristor 9 is applied to the control electrode of the thyristor 6, which keeps these thyristors open. When the contact is open technological sensor 15 ^{, 5}

the control electrodes of the thyristors 6 and 9 do not receive a positive potential, while the starting thyristor 6 turns off when the capacitor 14 is discharged, and the thyristor 9 when the pulsating 20 voltage drops.

When the contact of the technological sensor 15 closes, the alarm 8, the 4-pulse generator and the key thyristor 5 are turned on, and they start to operate in AND pulse mode, which determines the flashing of the warning lamp 17. When the contact of the technological sensor 15 opens, the warning lamp 8 causes the 4-pulse generator and the warning lamp 17 to be supplied .

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Claims (1)

Formula of inventions > 5 Device for multipoint signa _h lizapii comprising signaling cells each kotoryh''vypolnena on serially connected between the power supply rails & Technology sensor, signal lamp and thyristor, the first diodes, the anodes of which are connected to the anode of the thyristor of each cell of the alarm, the cathodes of the first diodes are connected at one point, the second diodes, the cathodes of which are ₄₃ Lamps, anodes of the second diodes are connected at one point, the first resistors, the first terminals of which are connected at one point, the pulse generator, the first input of which is connected to the first power supply bus, a signaling device, resistors, a capacitor, characterized in that, in order to improve efficiency and reliability of the device, a key thyristor, an additional starting thyristor, a test unit, a source of pulsating voltage, the first output of which is connected to the second power supply bus and to the input of the test unit, the first output to The second is connected to the anodes of the second diodes, the second output of the test unit is connected to the first terminals of the first resistors, the second terminals of which are connected to the control electrodes of the thyristors of each signaling cell, the cathodes of the first diodes are connected to the control electrodes of the starting and additional starting thyristors and directly to the anode of the key thyristor, the cathode of which is connected to the second output of the source of pulsating voltage and the cathode of the additional starting thyristor, the anode of which through the detector, it is connected to the third output of the test unit and to the anode of the starting thyristor, the cathode of which is connected to the second input of the pulse generator, the output of which is connected to the control electrode of the key thyristor, a fourth resistor is connected in parallel with each signal lamp .