At the invitation of the Nanjing Jinlong Tourism Special Line electric vehicle operation platform, Thread Technology collects the body state, total mileage, speed, gear information, key status, and parking by performing the CAN bus protocol reverse engineering on the Jinlong New Energy 10 tourist line car. Brake, brake pedal, BMS battery management system remaining battery percentage, SOC cruising range, overall voltage, overall current, state of charge, transmitted to the specified server or IP address via TCP network using GPRS network, and collect GPS positioning information at the same time