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- W2366317494 abstract "In view of problem that bad electromagnetic environment of coal mine underground causes phenomenon of false alarm and false power off of safety monitoring and control system,the paper analyzed kinds of underground electromagnetic interference sources and made electromagnetic interference test in areas of false alarm of safety monitoring and control system of a coal mine.The test result showed that on No.3213 working face of the mine,when parallel length of power cable and test cable in waist roadway and airway is about 150 m,interference peak-peak value of induced surge generated by starting pumps and drills is as high as 190 V,and the interference intensity is strong,which explained that strong signal interference sources produced by simultaneous starting of frequency converter and drill caused phenomenon of false alarm of gas sensor.According to the test result,it proposed corresponding anti-interference measures which solved problem of false alarm of gas sensor" @default.
- W2366317494 created "2016-06-24" @default.
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- W2366317494 date "2012-01-01" @default.
- W2366317494 modified "2023-09-23" @default.
- W2366317494 title "Research of Underground Electromagnetic Interference Sources and Anti-interference Technology" @default.
- W2366317494 hasPublicationYear "2012" @default.
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