Electronic parking brake device based on single-chip microcomputer

The utility model discloses an electronic parking brake device based on a single-chip microcomputer, which comprises a power source, a sensor unit, a control unit and an emergency relief brake button. The control unit and the sensor unit are respectively connected with a power source, and output end of the sensor unit is connected with an input end of the control unit, the control unit is connected with a motor, and the emergency relief brake button is respectively connected with the power source and the control unit. A brake button of a traditional brake system is replaced by the single-chip microcomputer for controlling, various sensors are added, braking and brake relief are completed through processing of the single-chip microcomputer, a driver has no need to actively operate the brake button, and accordingly the electronic parking brake device has the advantages of high safety performance, convenience in use, rapidness in response, accuracy in control and the like. Further, automobiles can be more autonomous, and the risk that the driver is too careless to park can be effectively avoided.