A Study on Vehicle CAN Bus Transmission Strategy Based on CompactRIO

Aiming at the multi-parameter test requirements of armored vehicle under dynamic conditions and the topology structure of CAN bus test network, a real-time data transmission strategy based on response pattern between host and slave nodes is proposed. Based on the strategy, a CAN bus communication protocol is developed, the assignment of priority, the arrangement of identifier and the definition of CAN frame data fields in the protocol are studied, and the upper computer interface and simulation programs are developed with LabVIEW. Based on CompactRIO acquisition platform, a verification platform is constructed to verify the feasibility of the strategy. The results show that with the control of the strategy proposed, the test system can realize the real-time acquisition, transmission, storage and display of 145 signals, well meeting test requirements.