CAN总线在井下测井仪中的应用

Application of CAN bus in underground logger

在分析CAN协议原理及应用的基础上,根据测井仪工作系统的具体要求,设计了新的CAN总线应用层协议,将其应用到井下测井仪中。该协议在CAN2.0的基础上参考CANopen协议规范,重新定义了标志符,构建了一种新型、可容纳多节点的CAN总线网络机制,实现了井下多监测探管与上位机节点的网络化同步通信。

On the basis of analysis of principle and application of CAN protocol,the paper designed a new CAN bus application layer protocol according to specific working requirements of logger.The application layer protocol was used to underground logger.On the basis of agreement CAN2.0,the protocol refers CANopen protocol specification to redefine the identifier and construct a new type of CAN bus network mechanism accommodated multi-node,so as to realize networked synchronous communication between nodes of monitoring tube and upper computer.