Theard Technology is an international automotive CAN bus data application solution provider. We develop CANBUS bus data for the Golf Jialv car multimedia system, and read the door lock light window status from the automotive CAN bus physical layer protocol layer application layer, collecting driving time. Information such as mileage, fuel consumption and throttle brake, and comprehensive measurement and analysis of CANBUS bus, widely used in automotive electronics, rail transit, aerospace, marine electronic CAN data acquisition applications.