Control system and method for automatic detection and reset after voltage drop

The invention relates to the technical field of electronic control systems, and provides a control system and method for automatic detection and reset after voltage drop. The system comprises a control power supply, a voltage sampling and processing circuit and a micro-control unit. When the system detects that the voltage of a control power supply drops to a certain threshold value, part of a power supply load circuit is cut off, the system is prevented from being damaged thoroughly due to the fact that the power supply is too low, meanwhile, the micro-control unit works, normal operation of a main control chip kernel and normal operation of communication are guaranteed, and basic functions of the controller are guaranteed. And when the voltage of the control power supply recovers to the normal voltage, the system automatically clears and resets the fault signal, so that the system can recover normal work. 本发明涉及电子控制系统技术领域，提出一种电压跌落后自动检测复位的控制系统及方法。该系统包括控制电源、电压采样及处理电路以及微控制单元。其中当系统检测到控制电源电压跌落至一定阈值时，会切断部分电源负载电路，避