An automatic control system for vehicle off-line double-idling discharging detection

An automatic control system for vehicle off-line double-idling discharging detection is provided. The automatic control system improves production efficiency, meets requirements for tatk time, reduces labor strength, does not need a rotating speed sensor, and is accurate in detection. The automatic control system comprises an industrial personal computer, a scanning gun, a server end computer, a discharging analyzer and a vehicle communication transit system (VCI). The VCI comprises a main control module, a K interface circuit, a controller area network (CAN) interface circuit and a power module. The power module supplies power to the main control module connected with the industrial personal computer through a universal series bus (USB) interface, the main control module is connected with the K interface circuit and the CAN interface circuit through a serial communication interface (SCI) interface and a CAN interface, the K interface circuit and the CAN interface circuit are both connected with an in-vehicle