The invention discloses a train automatic protection system, a relay and an over-temperature protection circuit. The over-temperature protection circuit comprises a switch module, a voltage sampling module, a control module and an over-temperature monitoring module. Wherein the voltage sampling module is used for sampling the voltage of an external input signal to obtain a voltage sampling signal; the control module is used for outputting an external output instruction according to preset control logic; the over-temperature monitoring module is used for outputting an on-off control signal according to the external output instruction, the voltage sampling signal and a preset over-temperature control threshold value; the switch module is used for controlling the on-off of the switch module according to the on-off control signal so as to control whether to output an external input signal to the outside or not, that is, the output can be stopped when the external input signal causes circuit over-temperature, so that the phenomenon that output misoperation or driving current overheating is easily caused when an external output circuit is short-circuited or the driving current is over-current is avoided; and the overall temperature of the ATP product is sharply raised.
本申请公开了一种列车自动保护系统、继电器及过温保护电路,该电路包括:开关模块、电压采样模块、控制模块以及过温监控模块;其中,电压采样模块用于对外部输入信号的电压进行采样,得到电压采样信号;控制模块用于根据预设控制逻辑,输出对外输出指令;过温监控模块用于根据对外输出指令、电压采样信号以及预设过温控制阈值,输出通断控制信号;开关模块用于根据通断控制信号控制自身通断,以控制是否向外输出外部输入信号,也即,本案能够在外部输入信号导致电路过温时停止输出,避免了因对外输出电路短路或者驱动电流过流时,容易造成输出误操作或者驱动电流过热,导致ATP产品整体温度急剧升高的问题。
Train automatic protection system, relay and over-temperature protection circuit
一种列车自动保护系统、继电器及过温保护电路
2024-05-17
Patent
Electronic Resource
Chinese
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