レール遊間計測に用いるコイルのインピーダンス特性

概要

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This paper deals with the impedance characteristics of an electromagnetic type rail joint gap sensor (RGS-SC) using probe coil for the ordinary railways. The sensor is able to detect a joint gap of rail by the change in impedance. The following results are obtained: (1) the impedance of the probe coil depends on the joint gap, the rail displacement, and the lift-off at constant frequency; (2) the impedances of the probe coil are 15.7 Ω and 16.4 Ω at joint gaps of 0 and 16 mm.
社団法人日本磁気学会の論文
2000-04-15