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

Abstract

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

CLC Number:

TP274

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

Figures/Tables 9

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Redundant Network of Underground Power Monitoring System Based on EtherCAT

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