CAN总线在雷达中的应用和开发

作为现场总线的CAN，是一种开放式互联网络，用以支持多主实时、分布式控制串行通信。在复杂的雷达系统工程中使用CAN总线，可有效提高通信的实时性和可靠性。本文从雷达应用的实际出发，采用自项向下的设计方法，首先建立具有典型特征的CAN总线网络，为解决多点通信的总线冲突提供一种有效解决方案；继而给出基于芯片级的CAN节点软硬件设计，构建符合雷达系统工程需要的单个CAN接口，以接入模块化的单部雷达综合通信链路。工程实施的结果与建模仿真结果相吻合，说明采用CAN总线较好地解决了总线自客错问题。

Application and Development of CAN Bus in Radar

CAN used as the field bus is an opening network for supporting a multiple-master real-time and distributed controlling serial communication. Using the CAN in the complicated radar system will effectively improve the real-time ability and the reliability of the communication. From the actual application of the radar, using the up to down design method, this paper sets up a typical CAN network in the first step which has provided an effective solution to the bus conflict in multi-points communication; after that it gives out a chip-based software/hardware design of CAN connection points so as to construct the single CAN connection port to insert into the modularized single radar communication chain. The actual application results are coincident with ones of modeling and simulation, which indicates the CAN settles up self-repairing problem in a better way.