The invention discloses a vehicle-mounted equipment ACC sleep crash wake-up circuit and method. The vehicle-mounted equipment ACC sleep crash wake-up circuit comprises an ACC detection circuit, an MCU circuit, an analog switch and a watchdog circuit. The ACC detection circuit is connected with an automobile body to detect the state of the ACC; the input end of the MCU circuit is connected with the ACC detection circuit; the control end of the analog switch is connected with the ACC detection circuit so as to carry out signal switching according to the state of the ACC. The output end of the MCU circuit is connected with the dog feeding end of the watchdog circuit; a reset signal output end of the watchdog circuit is connected with a first fixed end of the analog switch; a second fixed end of the analog switch is connected with a high-level signal; the reset end of the MCU circuit is connected with the moving end of the analog switch, and the MCU circuit executes reset according to the input of the reset end. According to the invention, the analog switch connected with the watchdog circuit is used for controlling the reset of the MCU circuit so as to wake up the vehicle-mounted equipment in time, and the customer satisfaction is improved.
本发明公开了一种车载设备ACC休眠死机唤醒电路及方法,包括:ACC检测电路、MCU电路、模拟开关和看门狗电路;ACC检测电路与汽车车身相连接以检测ACC的状态;MCU电路的输入端与ACC检测电路相连接;模拟开关的控制端与ACC检测电路相连接以根据ACC的状态进行信号切换;MCU电路的输出端与所述看门狗电路的喂狗端相连接;看门狗电路的复位信号输出端与模拟开关的第一不动端相连接;模拟开关的第二不动端与高电平信号相连接;MCU电路的复位端与模拟开关的动端相连接,MCU电路根据所述复位端的输入执行复位。本发明通过与看门狗电路相连接的模拟开关控制MCU电路的复位来及时唤醒车载设备,提升客户满意度。
Vehicle-mounted equipment ACC dormancy crash wake-up circuit and method
一种车载设备ACC休眠死机唤醒电路及方法
2022-04-12
Patent
Electronic Resource
Chinese
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