The invention relates to the technical field of rail transit signal systems, in particular to a signal circuit and a signal machine suitable for rail transit, and the signal circuit comprises a first relay, a second relay, a driving unit and a light-emitting unit; the first relay, the second relay and the driving unit are sequentially connected end to end, and the light-emitting unit is connected with the driving unit. Aiming at the heating problem of the dummy load R, the dummy load R in the circuit is connected into the circuit through the contact of the outdoor relay, so that the dummy load R can be led out and placed in a junction box beside the signal machine, the influence of heating of the dummy load R is avoided, and meanwhile, the safety of the whole circuit is not reduced. According to the scheme, when the LED breaks down, the current flowing through the outdoor relay is reduced, the contact of the outdoor relay falls down, the dummy load R is separated from the circuit, no matter how the dummy load R changes, the indoor relay can detect abnormity, and the safety problem caused by reduction of the dummy load R is solved.
本申请涉及轨道交通信号系统技术领域,特别涉及一种适用于轨道交通的信号电路及信号机,所述信号电路包括:第一继电器、第二继电器、驱动单元及发光单元;所述第一继电器、第二继电器及驱动单元依次首尾相连,所述发光单元与所述驱动单元相连。本申请针对假负载R的发热问题,由于本电路中假负载R是通过室外继电器的接点接入电路中的,可以将假负载R引出,放置于信号机旁边的接线箱中,避免其发热的影响,同时也不会降低整个电路的安全性。本方案中,当LED故障时,流过室外继电器的电流减小,室外继电器接点落下,导致假负载R从电路中脱离,无论假负载R如何变化,室内继电器都可以检测到异常,解决了假负载R减少导致的安全性问题。
Signal circuit and signal machine suitable for rail transit
一种适用于轨道交通的信号电路及信号机
2024-05-28
Patent
Electronic Resource
Chinese
IPC: | B61L Leiten des Eisenbahnverkehrs , GUIDING RAILWAY TRAFFIC |
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