Design and Application of SAE J1939 Communication Database in City-Bus Information Integrated Control System Development

With the increase of the number and the complexity of city-bus ECUs (Electronic Control Units), point-to-point link method in traditional city-bus has caused the problems of information exchange, reliability and maintenance. In this paper, we defined the conception of CBIICS (City-Bus Information Integrated Control System) and constructed CBIICS framework with high speed CAN bus and low speed CAN bus so as to share information between different ECUs. In order to provide consistent control and status data in V mode-based CBIICS development process, we designed SAE J1939 communication database to implement ECU, message and signal management and query. According to the electrical devices of an actual city-bus, we finally designed and implemented city-bus lamp control experiment system based on SAE J1939 protocol.