The invention discloses a monitoring system and method for realizing an electronic parking function based on a motor controller and a readable storage medium. The system comprises a functional layer which outputs a first control signal and a PWM signal to a driving chip; a function monitoring layer which outputs a second control signal; a chip monitoring layer which is used for monitoring whether the main control chip and the driving chip are normal or not; and an external watchdog module which communicates with the chip monitoring layer. When communication is abnormal, the external watchdog module controls the power supply control pin to act so as to cut off the power supply of the driving chip; and the function monitoring layer controls the enabling pin of the driving chip to realize turn-off through the second control signal and the first control signal, or the function monitoring layer and the chip monitoring layer share a turn-off path for cutting off the power supply of the driving chip. According to the invention, the function safety target of the ASIL B with the parking locking function and the function safety target of the ASIL A with the parking releasing function are realized by utilizing the position signals, so that unexpected releasing or unexpected locking in the parking mode is avoided.
本发明公开了一种基于电机控制器实现电子驻车功能的监控系统、监控方法和可读存储介质,系统包括:功能层,其输出第一控制信号和PWM信号至驱动芯片;功能监控层,其输出第二控制信号;芯片监控层,用于监控主控芯片和驱动芯片是否正常;外部看门狗模块,其与芯片监控层进行通讯,当通讯异常时,控制供电控制引脚动作以切断驱动芯片的供电;功能监控层通过第二控制信号与第一控制信号共同控制驱动芯片的使能引脚实现关断,或者功能监控层和芯片监控层共用切断驱动芯片供电的关断路径。本发明利用位置信号实现驻车锁止功能的ASIL B的功能安全目标以及驻车释放功能的ASIL A的功能安全目标,从而避免驻车模式下发生非期望释放或者非期望锁止。
Monitoring system and method for realizing electronic parking function based on motor controller, and readable storage medium
基于电机控制器实现电子驻车功能的监控系统、监控方法和可读存储介质
2021-07-27
Patent
Elektronische Ressource
Chinesisch
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