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CN-116804699-B - Railway signal relay contact state judging circuit

CN116804699BCN 116804699 BCN116804699 BCN 116804699BCN-116804699-B

Abstract

The invention relates to a railway signal relay contact state judging circuit, which belongs to the technical field of relays and comprises a relay socket, an isolation input module, a state setting module and a state acquisition judging module, wherein the relay socket is connected with the isolation input module and the state setting module, the isolation input module is connected with the state setting module, the isolation input module is responsible for isolating and converting the levels of pins of a relay to be tested, the state setting module is connected with the state acquisition judging module, the state setting module is responsible for setting the state of the relay to be tested, and meanwhile, a corresponding signal is output to the state acquisition judging module according to the signal of the isolation input module, and the state acquisition judging module receives the signal transmitted by the state setting module and judges the contact state of the relay to be tested according to the signal. According to the invention, the state detection of the relay contact is carried out through the cooperation of the AND gate and the NOR gate, so that the state detection of the relay contact is more convenient and accurate, and the accuracy of contact state judgment is improved.

Inventors

  • GONG HAODONG
  • ZHAO XINGHAI
  • DONG FANG
  • DU LIJUAN
  • Zhai jia
  • ZHANG SHU
  • WANG XIN
  • YAO WANG
  • LI QINGSHI
  • GAO DEXIN
  • SUN HAIDONG
  • CHEN LIHUA
  • BAI BIN
  • LIU NA

Assignees

  • 沈阳铁路信号有限责任公司
  • 通号（西安）轨道交通工业集团有限公司

Dates

Publication Date
20260505
Application Date
20230228

Claims (4)

  1. 1. The railway signal relay contact state judging circuit is characterized by comprising a relay socket, an isolation input module, a state setting module and a state acquisition judging module; The relay socket is used for installing and fixing a relay to be tested, and pins of the relay socket are respectively connected with corresponding input pins of the isolation input module and the state setting module; the output pins of the isolation input module are respectively connected with the corresponding pins of the state setting module, and the isolation input module is responsible for isolating and converting the levels of the pins of the relay to be tested; The output pins of the state setting module are respectively connected with the corresponding input pins of the state acquisition judging module, and the state setting module is responsible for setting the state of the relay to be tested and outputting corresponding signals to the state acquisition judging module according to the signals of the isolation input module; the state acquisition judging module receives the signal transmitted by the state setting module and judges the contact state of the relay to be tested according to the signal; the isolation input module comprises 6 optocouplers of TP3 to TP8, and cathodes of photodiodes of the 6 optocouplers of TP3 to TP8 are respectively connected with pins with the same reference numbers as the relay socket; the collectors of the 6 phototriodes of the TP3 to TP8 are connected with a power supply, and the emitters are respectively connected with corresponding pins of the state setting module; the state setting module comprises 36 relays of JQ1 to JQ 36; normally open contacts of 12 relays of JQ1 to JQ12 are respectively connected with pins with the same reference numbers as those of relay sockets, and the movable contact is grounded; Normally open contacts of 12 relays of JQ13 to JQ24 are respectively connected with emitting electrodes of 6 phototriodes of the optocouplers TP3 to TP8, the normally closed contacts are connected with a power supply, and the movable contacts are connected with corresponding pins of a state acquisition judging module; normally open contacts of 12 relays of JQ25 to JQ36 are respectively connected with emitting electrodes of phototriodes of 6 optocouplers of TP3 to TP8, and movable contacts are connected with corresponding pins of the state acquisition judging module; the state acquisition judging module comprises 9 AND gates from U1 to U6 and U10 to U12, and 3 NOR gates from U7 to U9; The movable contacts of the 12 relays of JQ13 to JQ24 are connected with corresponding input pins of the AND gates of the state acquisition judging modules U1 to U3, output pins of the AND gates of U1 to U3 are connected with corresponding input pins of the AND gates of U4 and U5, output pins of the AND gates of U4 and U5 are connected with corresponding input pins of U5 and U6, output pins of U6 are connected with input pins of the residual AND gates in U6, and the output pins of the residual AND gates in U6 serve as first output ends GZZ; The movable contacts of the 12 relays of JQ25 to JQ36 are connected with corresponding input pins of NOR gates of the state acquisition judging modules U7 to U9, output pins of the NOR gates of U7 to U9 are connected with corresponding input pins of AND gates of U10 and U11, output pins of AND gates of U11 and U12 are connected with corresponding input pins of U11 and U12, output pins of U12 are connected with input pins of residual AND gates in U12, and output pins of the residual AND gates in U12 serve as second output ends SFZ; And the input ends of the 9 AND gates of U1 to U6, U10 to U12 and the 3 NOR gates of U7 to U9 in the state acquisition judging module are grounded through a pull-down resistor.
  2. 2. The circuit for judging the contact state of a railway signal relay according to claim 1, wherein the exciting coils of 36 relays of JQ1 to JQ36 in the state setting module are connected with anti-parallel freewheeling diodes.
  3. 3. The circuit for judging the contact state of a railway signal relay according to claim 2, wherein 36 relays of JQ1 to JQ36 in the state setting module are of the type DS2Y-S-DC24.
  4. 4. The railroad signal relay contact status determination circuit of claim 3, wherein 9 AND gates of U1 through U6, U10 through U12 in the status acquisition determination module are 74LS08 in type number and 3 NOR gates of U7 through U9 are 74LS02 in type number.

Description

Railway signal relay contact state judging circuit Technical Field The invention relates to the technical field of relays, in particular to a contact state judging circuit of a railway signal relay. Background The railway signal relay type is various, the positions of contact distribution are different, when the relay is tested for slow suction time, slow release time and return time by using an electric stopwatch, the relay contacts are required to be connected in series and in parallel according to requirements, so that the state of the relay contacts is judged, then the time characteristic of the relay is tested, because the railway signal relay is more in model number, different relay sockets are required to be manufactured to be connected with different relay contacts during testing, the relay connection sockets are more and disordered, and the relay connection sockets are required to be selected and replaced among different sockets during testing, so that the testing efficiency is affected. Moreover, the existing relay contact state inspection is mainly performed by naked eyes, and results lack accuracy due to light, human eye sensitivity, reaction time and the like. Disclosure of Invention Aiming at the defects existing in the prior art, the invention provides a circuit for judging the contact state of a railway signal relay. The technical scheme of the invention is as follows: A railway signal relay contact state judging circuit comprises a relay socket, an isolation input module, a state setting module and a state acquisition judging module, wherein the relay socket is used for installing and fixing a relay to be tested, pins of the relay socket are respectively connected with corresponding input pins of the isolation input module and the state setting module, output pins of the isolation input module are respectively connected with corresponding pins of the state setting module, the isolation input module is used for isolating and converting the levels of all pins of the relay to be tested, output pins of the state setting module are respectively connected with corresponding input pins of the state acquisition judging module, the state setting module is used for setting the state of the relay to be tested, and meanwhile, corresponding signals are output to the state acquisition judging module according to signals of the isolation input module, and the state acquisition judging module receives signals transmitted by the state setting module and judges the contact state of the relay to be tested according to the signals. Further, the isolation input module comprises 6 optocouplers of TP3 to TP8, cathodes of photodiodes of the 6 optocouplers of TP3 to TP8 are respectively connected with pins with the same reference numbers as the relay socket, collectors of phototriodes of the 6 optocouplers of TP3 to TP8 are connected with a power supply, and emitters of phototriodes of the 6 optocouplers of TP3 to TP8 are respectively connected with corresponding pins of the state setting module. Further, the state setting module comprises 36 relays of JQ1 to JQ36, normally open contacts of 12 relays of JQ1 to JQ12 are respectively connected with pins with the same reference numbers of relay sockets, movable contacts are grounded, normally open contacts of 12 relays of JQ13 to JQ24 are respectively connected with emitting electrodes of phototriodes of 6 optocouplers of TP3 to TP8, normally closed contacts are connected with a power supply, movable contacts are connected with corresponding pins of the state acquisition judging module, normally open contacts of 12 relays of JQ25 to JQ36 are respectively connected with emitting electrodes of phototriodes of 6 optocouplers of TP3 to TP8, and movable contacts are connected with corresponding pins of the state acquisition judging module. Further, the state acquisition judging module comprises 9 AND gates from U1 to U6 and U10 to U12, 3 NOR gates from U7 to U9, the movable contacts of the 12 relays from JQ13 to JQ24 are connected with corresponding input pins of the AND gates from U1 to U3 of the state acquisition judging module, output pins of the AND gates from U1 to U3 are connected with corresponding input pins of the AND gates from U4 and U5, output pins of the AND gates from U4 and U5 are connected with corresponding input pins of U5 and U6, output pins of U6 are connected with input pins of the remaining AND gates in U6, output pins of the remaining AND gates in U6 serve as first output ends GZZ, movable contacts of the 12 relays from JQ25 to JQ36 are connected with corresponding input pins of the NOR gates from U7 to U9, output pins of the NOR gates from U7 to U9 are connected with corresponding input pins of the AND gates from U10 and U11, output pins of the AND gates from U11 and U12 are connected with corresponding input pins of the AND gates from U11 and U12, output pins of the remaining AND gates from U12 are connected with output pins of the remaining AND ga