The invention provides a monitoring reset circuit based on a vehicle equipment power supply board card and a monitoring method thereof, wherein the circuit comprises a 24 V input power supply module,an input voltage monitoring module, a 5 V output power supply module and a reset delay signal module; the 24 V input power supply module is used for providing an input voltage for the vehicle equipment power supply board card; the input voltage monitoring module is used for monitoring the input voltage provided by the 24 V input power supply module for the vehicle equipment power supply board cardin real time and generating a monitoring signal to the 5 V output power supply module; the 5V output power supply module is used for responding to a monitoring signal to provide 5V input voltage anda voltage abnormity early warning signal for a rear-end vehicle equipment control function board card, so that the control function board card performs important data storage and control function adjustment before the power supply is turned off; and the reset delay signal module is used for generating a reset delay signal to the rear-end vehicle equipment control function board card based on the 5V input voltage provided by the 5 V output power supply module and the voltage abnormality early warning signal. According to the technical scheme, the working state of the equipment power supply canbe monitored in real time, and a function of providing a stable reset signal under a fault restart condition is realized.
本发明提供一种基于车辆设备电源板卡的监测复位电路及其监测方法,包括:24V输入供电模块,用于为车辆设备电源板卡提供输入电压;输入电压监测模块,用于实时监测24V输入供电模块为车辆设备电源板卡提供的输入电压,生成监测信号至5V输出供电模块;5V输出供电模块,用于响应监测信号为后端车辆设备控制功能板卡提供5V输入电压和一个电压异常预警信号,使控制功能板卡在电源关断之前进行重要数据的存储及控制功能的调整;复位延时信号模块,基于5V输出供电模块提供的5V输入电压和电压异常预警信号,生成复位延时信号至后端车辆设备控制功能板卡。本发明的技术方案能够实时监测设备电源的工作状态,并实现在故障重启条件下提供稳定复位信号功能。
Monitoring reset circuit based on vehicle equipment power supply board card and monitoring method thereof
一种基于车辆设备电源板卡的监测复位电路及监测方法
2020-12-22
Patent
Elektronische Ressource
Chinesisch
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