SU1661029A1 - Device for checking relay units for operation - Google Patents

Abstract

The invention relates to railway automation and can be used to test blocks of relay equipment. The purpose of the invention is to increase reliability. The device contains a decoder 2 with connected windings of switching relays 6 to 9 and a relay 14 for setting the polarity of the verification signal, a block 5 for fixing faults in the tested block. The control terminals of the tested block 15 are connected to the inputs of the block 5 through the contacts of the switching relays. The polarity of the verification signal is set by contacts 14.1 and 14.2 of relay 14. 1 sludge.

Description

The invention relates to railway automation and can be used to test the operability of blocks of relay equipment.

The purpose of the invention is to increase reliability.

The drawing shows a functional diagram of the device.

The device comprises a memory unit 1, the output of which is connected to one of the inputs of the decoder 2, a block 3 for generating the address of the test command of the relay blocks, connected to the input of the signaling unit 4, a block 5 for fixing faults in the block under test, switching relays 6 with contacts

6.1 and 6.2, 7 with contacts 7.1 and 7.2, 8 with contact 8.1.9 with contact 9.1, the windings of which are connected to the outputs of decoder 2. In addition, the device contains switching relays with contacts 10.1, 10.2, 11.1, 11.2, 12.1, 12.2 and 13.1, the windings of which are connected to the decoder in the same way, and the relay 14 sets the polarity of the test signal with contacts 14.1 and 14.2. Through the series-connected contacts 6.1 and 8.1, 10.1 and 12.1, 7.1 and 9.1 and 11.1 and 13.1, the first, second, third and fourth terminals of the tested block 15 are connected to the first input of block 5, through contact 6.2 the first terminal is connected to the positive pole of the power source, through contacts 10.2 and 7.2, the second and third terminals are connected to the second input of block 5. to one of the outputs of which contacts 14.1 and 14.2 are connected. connected to the negative and positive poles of the power source, and the fourth terminal through pin 11.2 is connected to the negative pole of the power source.

The device operates as follows.

- Suppose that in a known-good tested relay block 15, the first terminal is connected to the second and not connected to other terminals. Check the connection between the first and second terminals and the absence of other connections. On the Start command, block 3 sends to the memory block 1 the address of the first test command of block 15 and the Read command. The read command is decrypted and stored by the Synchronization command from block 3 of the switching relay, which disconnects the first input terminal of block 5 with its contact 12.1. Then, in the same way, block 3 generates the next command through memory block 1. As a result, a switching relay 6 is activated, which, by its contact 6.2, connects the first terminal of the test block 15 to the positive pole of the power source. The same command carries information about the need to check the status of block 5, which from the decoder 2 enters block 3.

If the signal received by the control unit 3 from unit 5 does not coincide with the reference signal, then the signaling unit 4 informs the operator of the presence of a false connection between the first and other (except the second) terminals of the test unit 15 and the unit check stops. The location of the false connection ^{1 is} determined by sequentially disconnecting all the terminals of the test block 15 from the first input of the analysis block 5 by the Start command.

If the signal received by block 3 from block 5 matches the reference signal, then the verification continues. Block 1 of the memory upon the command of block 3 issues the next command, as a result of which the switching relay is switched on, which, using its contact 10.2, connects the second terminal of block 15 to the second input of block 5. Relay 14 will not work on this command to ensure connection to the second input of block 5 of analysis negative pole of the power source. If the signal about the presence of voltage at the second terminal of block 15 does not come from block 5 to the input of block 3, then the test stops and the signaling block 4 receives information about the presence and location of a break in the block circuit

15. If a signal about the presence of voltage at the second terminal of block 15 comes from block 5 to the input of block 3, then the test continues and all the other circuits of block 15 are checked in the same way. If, as a result of the entire program for checking faults, it was not found in the tested block 15, then the last command, arriving at block 3, brings the device to its original state, stops its operation and provides information to signaling unit 4 about the health of the test block 15.

Claims (1)

Claim A device for monitoring the operability of relay blocks, comprising a block for generating the address of the command for checking relay blocks, a block for fixing faults in the block under test, switching relays and a decoder, the first outputs of which are connected to the windings of switching relays, and the input and second output are connected respectively to the output and the first input of the block the formation of the address of the test command relay blocks, the second input of which is connected to the first output of the block fixing faults in the tested block, and the power source, excellent scheesya topics. that, in order to increase by 166 1029 reliability, it is equipped with a relay for setting the polarity of the verification signal, the winding of which is connected to the third output of the decoder and through the included parallel front and rear contacts of which the power source is connected to the fault fixing unit, connected to the control terminals of the tested unit through parallel circuits from the front contacts of the first, second , third and fourth switching relays connected in series with front contacts! fifth, sixth, seventh and eighth switching relays, respectively, while each of these corresponding front contacts 5 is connected respectively to the rear contacts of the fifth, sixth, seventh and eighth switching relays, and the rear contacts of the fifth and eighth switching relays are connected to a power source, and 10 The rear contacts of the sixth and seventh switching relays are connected to the second input of the fault fixing unit.