The invention provides a switch indicator lamp internal circuit in an electronic parking brake system. The switch indicator lamp internal circuit comprises a switch control module and a switch indicator lamp module. A first port of the switch control module is connected with a second port of the switch indicating lamp module; the switch control module is used for controlling a switch of the electronic parking brake system; the switch indicating lamp module is used for indicating the on-off state of the electronic parking brake system; the switch indicating lamp module comprises a current control resistor, and the current control resistor is used for determining that the current in the switch indicating lamp module is smaller than a preset threshold value under the condition that the switch is turned off. According to the switch indicator lamp internal circuit in the electronic parking brake system, the current control resistor connected in parallel with the light-emitting diode is additionally arranged in the switch indicator lamp module, and it can be guaranteed that the value of the current passing through the light-emitting diode on the circuit is smaller than the preset threshold value under the condition that the switch is turned off; therefore, the switch indicating lamp is in an off state.
本发明提供一种电子驻车制动系统中的开关指示灯内部电路,包括:开关控制模块和开关指示灯模块;所述开关控制模块的第一端口与所述开关指示灯模块的第二端口相连;所述开关控制模块用于控制电子驻车制动系统的开关;所述开关指示灯模块用于指示所述电子驻车制动系统的开关状态;所述开关指示灯模块包括电流控制电阻,所述电流控制电阻用于在开关关闭的情况下确定所述开关指示灯模块中的电流小于预设阈值。本发明提供的电子驻车制动系统中的开关指示灯内部电路,通过在开关指示灯模块中增加一个与发光二极管并联的电流控制电阻,可以在开关关闭的情况下保证电路上通过发光二极管的电流值小于预设阈值,从而保证开关指示灯是熄灭状态。
Switch indicator lamp internal circuit in electronic parking brake system
电子驻车制动系统中的开关指示灯内部电路
18.02.2025
Patent
Elektronische Ressource
Chinesisch