Design of Monitoring and Control System of Mechanized Mining Sets Based on Wire and Wireless Communication Technologies
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摘要: 介绍了一种采煤工作面综采机组监控系统的设计:针对综采机组所采用的PLC种类多的问题,介绍了基于Modbus的统一协议模型的构建;针对采煤机来回移动的工作特性,介绍了一种有线通信与无线通信相结合的采煤机数据传输方案,即固定综采机组间采用矿用屏蔽双绞线通信电缆作为通信媒介,移动设备机组如采煤机机头上设置一个无线收发装置,在固定的采煤机机尾上也设置一个无线收发装置,机尾无线收发装置再挂接到现场总线上,从而构成一个有线/无线通信链路,实现安装在移动机头上的PLC控制器与综采机组监控系统通信主站的数据交换。Abstract: The paper introduced a design of monitoring and control system of mechanized mining sets of coal face.In view of the problem of many kinds of PLC adopted by mechanized mining sets,it introduced construction of unified protocol model based on Modbus.In view of the working characteristics of movement of shearer,it introduced a scheme of data transmission of shearer which combining wire communication with wireless communication,namely it uses mine-used communication cable of shielded twisted pair as communication media between fixed mechanized sets,and sets up a wireless set on moving united equipments such as head of shearer and sets up a wireless set on tail of shearer too,then the wireless set of tail of shearer connects with field bus,which builds a wire and wireless communication link,so as to it can realize data exchange between PLC controller installed on moving head of shearer and communication master station of the monitoring and control system of mechanized mining sets.
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