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Reliability of Mine Safety Monitoring System

Author: ZhaoXiuXia
Tutor: MaFengYing
School: Shandong Institute of Light Industry
Course: Detection Technology and Automation
Keywords: Reliability Analysis The EED-SDP algorithm CAN bus Network topology Fault Tree Analysis
CLC: TP277
Type: Master's thesis
Year: 2011
Downloads: 83
Quote: 1
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Abstract


With the development of high-tech, mine safety monitoring system is an important measure to protect the coal mine to achieve high-yield, high-efficiency, high safety, reliability, getting people's attention. Improve mine safety monitoring system reliability, conducive ground monitoring personnel remote control downhole operation, reduce the incidence of coal mine accidents, development of emergency measures to reduce the loss of human and material resources. Analyzed from the point of view of communication reliability of the Mine Safety Monitoring System, the first analysis of the Mine Safety Monitoring System Research, discusses the reliability of the communication network concept, the reliability of the assessment methods and factors affect reliability. Followed by analysis of the structure and reliability of mine safety monitoring system communication bus, to establish the reliability of the model. Finally, the simulation on mine safety monitoring system communication network topology. Mine safety monitoring system communication network reliability, communication network reliability assessment methods: cross product and algorithm, the jumping surface node Law, EED-OBDD method, EED-SDP law. A detailed analysis of the EED-SDP algorithm, the algorithm avoids redundant, and occupies less memory calculation, the reliability of the communication network of the mine monitoring system can be evaluated from the point of view of the network topology, but does not consider the capacity of the nodes and links impact on the reliability of the communication network. This algorithm has been improved, taking into account the nodes and links to meet the demand for reliability, and gives the detailed steps of the algorithm. Experimental simulation verify the algorithm to better meet the actual needs of the mine safety monitoring system to evaluate the reliability of the communication network of the Mine Safety Monitoring System survivability and survivability from the network's point of view. Analysis of communication system bus, fieldbus technology, high reliability, real-time and good characteristics, to improve the reliability of the mine safety monitoring system. This paper analyzes the CAN bus technology applied to the advantage of the mine safety monitoring system and commonly used in mine safety monitoring communication system bus structure. Its fault tree model, the use of fault tree analysis of its reliability assessment. And made a few effective measures to improve the reliability of the communication system. Simulation of network topology, using improved contrast not cross-plot and algorithm based on edge expansion and jump surface node algorithm simulation application to mine some of the network topology. Through simulation, and evaluate the proposed algorithm is practical, high accuracy and reliability evaluation of the tree and star network topology.

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CLC: > Industrial Technology > Automation technology,computer technology > Automation technology and equipment > Automation systems > Monitoring, alarm,fault diagnosis system
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