Implementation and Application of CAN Bus Technology in Multi-source Integrated Navigation System

Cong Wang, Jie Li, Shuai Chen

Integrated navigation, CAN bus, plug and play, positioning accuracy.

The integrated navigation system adopting RS-232, RS-422, and RS-485 as the communication bus has the disadvantages of one master and many slaves, data communication as command response, low transmission rate, and weak error handling ability. It cannot meet the requirements of multi-source information fusion. Technical requirements of modern integrated navigation interface. CAN communication bus technology has the characteristics of fast response, high positioning accuracy, good scalability, strong error correction ability, etc., which can improve the flexibility and efficiency of the integrated navigation system. Based on the multi-source integrated navigation system, a plug-and-play interface module based on CAN bus technology is designed, and the driver of the module is written, and the conversion scheme of related sensors in the multi-source system is provided. System debugging shows that the module is stable and reliable, easy to modify and transplant, and can be used in a variety of multi-source combined navigation systems, with high application value.