Development of Mine Intrinsically-Safe Transient Electromagnetic Instrument Based on Dual-channel Data Synthesis
XU Yangcheng
Abstract：The transient electromagnetic technique has been widely used for water disaster detection in coal mines due to its sensitivity to the water body. When the transient electromagnetic instrument is used for remote advance detection, it should have the characteristics of anti-interference transmission, the high dynamic and low-noise acquisition and explosion-proof design. For this purpose, a bipolar transmitter was developed, which used the bipolar transmission with integral multiple of power frequency to suppress the power noise; a circuit with dual-channel simultaneous amplification and filtering, bi-module simultaneous acquisition and dual-channel data synthesis was designed, and the noise-suppression acquisition in a large dynamic range was achieved;for the safe use of the the transient electromagnetic instrument, the over-current protection, short-circuit protection and reverse-connect protection were provided. Finally the accuracy of the transient electromagnetic instrument was verified by the detection of a water-filled zone.
Keywords：mine transient electromagnetic instrumentbipolar transmissiondual-channel data synthesisprotection of power source
Publication Date：2015-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：4( 31-33,46 )