SU1361050A1 - Device for activating the control relay of railway automatic remote control system - Google Patents

Abstract

The invention relates to the field of control of railway signals and arrows and can be used in various systems of computer or microprocessor-based anti-centralization of arrows and signals. The aim of the invention is to increase reliability. The device for switching on the control relay of railway and railway automation and telemechanics comprises a command generation unit 1 connected by outputs to the inputs of a matching unit 2 connected by outputs to the inputs of one of the signal shaping units 3 and the power of which is connected to the first input of the generator 4 pulses . The output of the generator 4 is connected to the input of the optoelectronic key element 5 connected to the input of another block 6 forming the duration and power of the signals, the output of which is connected to one of the windings of the executive relay 7 connected to the other winding with the source 8 of the power supply and through a reverse resistor 9 connection - to the second input of the generator 4. 1 Il. with

Description

The invention relates to the field of control of railway signals and arrows and can be used in various systems of computer or microprocessor-based electrical interlocking of arrows and signals.

The purpose of the invention is to increase reliability

The drawing shows a functional diagram of the proposed device.

The device for switching on the executive relay of railway, automatics and telemechanics contains a formation unit 1, a command connected by outputs to the inputs of a unit 2 of coincidence j connected by outputs with the inputs of one of the formation and duration of the signal generator 3, the course of which is connected to the first input of the generator 4 pulses. The output of generator 4 is connected to the input of an optoelectronic key element 5 connected to the input of another block 6 for shaping the duration and power of signals whose output is connected to one of the windings of the executive relay 7 connected to the other winding with power supply 8 and through a resistor , 9 feedback connection to the input of the generator 4. Block 1 rynolnek ia computer. Actuating relay in: .1 complete two-winding polarized "Blocks 3 and 6 are made per meter meter voltage double circuit. Unit 3 contains iOs capacitor diodes 11 and 12. and capacitor 13.

The device works as follows

In the initial state, the executive relay 7 is switched off. To turn it on, block 1 generates signals from eight to ten pulses, followed by a high frequency on three independent channels -, block 2 determines the correctness of these signals (on the main, control and test programs) and calls up a series of eight on its output. ten negative negative pulses that go to the 3 "block. When the first pulse arrives, the capacitor .10 is charged, which is discharged to the capacitor 13 during the pause.

Due to the fact that the capacitance of the capacitor 10 is chosen less than the capacitance of the capacitor 13, the voltage on the capacitor 13 increases to

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Litter value of input signals for several pulses. In this case, the polarity of the output voltage of the unit 3 (when it is operational) is opposite to the polarity of the pulse signals from the output of the unit 2. The output from the output of the capacitor 13 is fed to the first input of the generator 4, which is excited. The output signals of the generator 4 through the optoelectronic key element 5 are fed to the input of unit 6. The latter converts negative polarity pulse signals into a constant positive voltage, which is fed to the first winding of the operating relay 7, to the second winding of which the power supply 8 is connected. In this case, the magnetic fluxes in both windings have the same voltage and the relay attracts its measles.

Simultaneously through a resistor 9

5, the output voltage of the block 6. goes to the second input of the generator 4, maintaining its oscillations, since the block 1 through the block 2 after the first series of eight to ten pulses, which follow with a high frequency, generates the hold pulses of the relay with a high duty cycle and a much smaller frequency At the same time, the output voltage of the unit 3 decreases, but due to the fact that the output voltage of the generator 4 goes through the resistor 9, the output frequency of the pulse generator 4 decreases slightly, and the output voltage of the unit 6 remains sufficient to hold the executive relay. Thus, upon receipt of a certain number of pulses from blocks 1 and 2, the executive relay 7 attracts its measles and keeps it until blocks 1 and 2 form pulsed signals. It should be noted that the possibility of switching on the relay 7 only in one of the windings is excluded by the design of the relay.

If the elements of the unit 3 are damaged at its output, there is either no voltage or a negative voltage appears, the generator 4 stops its operation, and the relay 7 is turned off. The same happens if the elements of the generator 4 and the opto-electronic key element 5 are damaged. If the block 6 is damaged on the first

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the winding of the executive relay 7 or the voltage does not flow at all, or the negative voltage flows in, in both cases the executive relay 7 releases its measles, as it is held only when current flows through the same windings of the same voltage.

Thus, the proposed device is constructed in such a way that, for any damage to its elements, the relay is switched off and a dangerous failure is prevented, i.e. spurious commands to turn on railway automatics are prevented.

Claims (1)

Invention Formula A device for switching on an executive relay of railway automation and telemechanics, comprising a command generation unit connected by outputs to the input of the unit 5 0 day, a pulse generator, a duration and power shaping unit, connected by an output to an executive relay input, is required in order to increase reliability, it is equipped with an optoelectronic key element, a feedback resistor and an additional duration shaping unit and the power of the signals, the input connected to the output of the coincidence unit, the output to the first input of the pulse generator, the output of which is connected to the input of an optoelectronic key element connected by the output to the input of the form unit the duration and power of the signals, the output of which through a feedback resistor is connected to the second input of the pulse generator, the blocks forming the duration and power of the signals performed on an asymmetric voltage doubling circuit.