基于EtherCAT的井下电力监控系统冗余网络

doi:10.16180/j.cnki.issn1007-7820.2021.06.013

摘要/Abstract

摘要：

针对煤矿井下监控系统在发生突发情况时可靠性和可维护性降低的问题,文中设计了基于工业以太网EtherCAT通信的煤矿井下监控系统冗余网络。通过研究工业以太网EtherCAT的组成、工作原理和报文结构,对比有、无冗余结构的EtherCAT通信网络特性。在常规EtherCAT主站驱动程序中加入链路冗余机制,并分别规划了在网口故障、链路故障和节点故障时冗余帧传播机制、故障点定位和恢复策略。在实验室条件下,依据EtherCAT通信网络和煤矿井下供电网络,搭建井下电力监控系统仿真测试平台,并加入冗余机制,对其性能进行测试实验。实验结果表明系统性能优越,运行可靠性也有所提升。

关键词: 矿井电力, 监控系统, 冗余网络, EtherCAT, TwinCAT, 通信, 工业以太网, 供电系统

Abstract:

In view of the problem that the reliability and maintainability of the coal mine underground monitoring system are reduced when emergency occurs, a redundant network of the coal mine underground monitoring system based on industrial Ethernet EtherCAT communication is proposed in the present study. By studying the composition, working principle and message structure of industrial Ethernet EtherCAT, the characteristics of EtherCAT communication network with or without redundant structure are compared. The link redundancy mechanism is added to the regular EtherCAT master driver. The redundant frame propagation mechanism, fault point location and recovery strategy in network port fault, link fault and node fault are planned, respectively. Under laboratory conditions, a simulation test platform for the underground power monitoring system is established based on the EtherCAT communication network and the underground coal mine power supply network, and a redundant mechanism is added to test its performance. The results show that the system has superior performance and the reliability of the system is markedly improved.

Key words: mine power, monitoring system, redundant network, EtherCAT, TwinCAT, communication, industrial ethernet, power supply system

中图分类号:

TP274

刘婧岩,王玉梅. 基于EtherCAT的井下电力监控系统冗余网络[J]. 电子科技, 2021, 34(6): 73-78.

LIU Jingyan,WANG Yumei. Redundant Network of Underground Power Monitoring System Based on EtherCAT[J]. Electronic Science and Technology, 2021, 34(6): 73-78.

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