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《Industry and Mine Automation》 2018-01
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On-line monitoring system of working face footage based on radar ranging

ZHANG Qinghua;NING Xiaoliang;ZHAO Xusheng;DENG Ganbo;CCTEG Chongqing Research Institute;State Key Laboratory for Gas Disaster Monitoring and Emergency Technology;  
The working face footage acquired by traditional artificial static measurement technology has non-continuous and poor time-effectiveness,and can't satisfy requirement of on-line real-time warning.For the above problem,an on-line monitoring system of working face footage based on radar ranging was designed.The system uses combination arrangement process of response radar ranging sensor and reflection radar ranging sensor to overcome shortcomings of short measuring range of the reflection radar and solve problem of difficult installatipn and maintainance of the response radar.Principle of the radar ranging was analyzed,and mine-used intrinsically safe radar ranging sensor composed of the reflection radar ranging sensor and response radar ranging sensor was developed.The test result shows that the system can stably and reliably realize on-line monitoring,real-time collection and analysis of working face footage.When measuring distance is less than 200 m,the maximum absolute error is 0.24 m,and the measuring distance and accuracy can meet the needs of gas disaster early warning.
【Fund】: 国家重点研发计划资助项目(2016YFC0801404);; 重庆市“科技创新领军人才支持计划”资助项目(CSTCKJCXLJRC14);; 中国煤炭科工集团有限公司科技创新基金资助项目(2013ZD002)
【CateGory Index】: TD712
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