摘要： 在传统卫星控制器局域网(CAN)网络中，各单机节点地址固定且需预先配置。为此，提出一种微小卫星CAN网络自组织技术设计方法。将网络工作模式分为正常模式和配置模式，采用物理地址逐级匹配的方式实现对连接到网络上节点的自主发现，并根据网络地址表对节点地址进行自动分配。实验结果表明，自组织星载CAN网络可有效发现并配置接入CAN网络的节点，节点的平均配置时间少于30 ms，提高了卫星电子系统的总装、集成及测试速度，缩短了卫星研制周期。
关键词:
微小卫星,
控制器局域网,
自组织,
物理地址,
超时,
CANoe环境
Abstract: Aiming at the problem that Controller Area Network(CAN) in micro-satellites onboard applications works properly only in the situation when each node holds a legal node-address which is pre-configured manually, a self-organization method for micro-satellites’ CAN is introduced, which divides the network operation status into normal and configuration mode, it helps to discover automatically the nodes joining in CAN network by matching physical address step by step, and then configures them with assigned node-address using network address table. Experimental results show that self-organizational satellites onboard CAN network can discover and configure effectively the nodes connected to the network, and the average configuration time is less than 30 milliseconds, contributing to rapider assembly, integration and test of satellites electronic systems, and greatly reduce the development time.
Key words:
micro-satellite,
Controller Area Network(CAN),
self-organization,
physical address,
time-out,
CANoe environment
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