Device and method for identifying abnormal running state of commercial vehicle

The invention relates to the vehicle safety running technology and discloses a device and a method for identifying the abnormal running state of a commercial vehicle. The device comprises a single chip, a liquid crystal display screen, a data collector connected with a vehicle bus, a microwave radar used for measuring the relative distance between a vehicle and a vehicle ahead, and a visual sensor used for measuring the distance between a vehicle tire and a lane line, wherein the corresponding I/O (input/output) input end of the single chip are connected with the output ends of the microwave radar, the visual sensor and the data collector respectively; and the I/O output end of the single chip is connected with the liquid crystal display screen. According to the device, the driver operation behavior bias and the vehicle running state bias can be automatically collected, and a driver can be timely prompted when the vehicle is in the abnormal running state, so that the vehicle is prevented from entering the dangerous running state and the running safety of the vehicle is guaranteed.