LIN network simulation system based On LabVIEW

LIN (LIN Interconnect Network) Network is widely used in automotive communication system. The widespread usage of LIN network makes the test on communication of LIN nodes and optimization of LIN application layer protocol necessary. Hence, a LIN network simulation system based on LabVIEW is introduced in this paper.The system is consisted of a PC software based on LabVIEW and a USB-LIN smart card. It can simulate up to 16 LIN nodes so as to test LIN communication in an incomplete network. The LIN driver in the smart card is built up with standard LIN 2.1 APIs, so the system can send configuration and identification commands to other LIN nodes when simulating a master node to modify the configuration in other nodes.The hardware of the smart card includes a USB communication module and a LIN communication module, the controller of the card is Freescale´s 16-bit MCU. The imbedded program mainly handles the LIN communication while the PC software undertakes the simulation, configuration and monitoring function of system. Finally a test with the help of CANoe verifies the simulation function of the system.