Abstract
As the bus communication technology in the automotive electronic systems used in broad applications, but the bus communication to hardware debugging and fault detection system just by relying on existing test equipment has been unable to complete the communication data processing and display of comprehensive parameters, which inconvenience to the system debugging. The design of air conditioning control system for trams face the problem of how to integrate software programming on VB corresponding adapter interface circuit to complete the current loop, RS232 communication communications switch, combined with Mod Bus communication protocol to complete the transmission of information. Control mode, to achieve and tram overhead control box air conditioning systems for data communications, replacing the system control device, and air-conditioning system real-time display of various parameters, monitor mode, the intercept communication bus air conditioning system, complete system operation status display. The manipulation of air-conditioning system software sets the button control panel, panel display and the system parameters of sensor data and fault display in one.