2009•Yibiao jishu yu chuanganqiRequires access

Design for Large Range Electric Eddy Current Sensor

Gao Song-wei

Abstract

Electric eddy current sensor has the characteristic of no scent for the medium,and can test the conductor without contact,so it is widely applied to the mental distance test.In order to broaden the electric eddy current sensor's detecting range,this paper analyzed the eddy current sensor theoretically.The test circuit of a large eddy current sensor was designed based on invariance frequency of the carrier wave amplitude modulation.It was simulated with Matlab,and the testing circuit was experimented.Elementary research on the area-variable eddy current sensors has been done,this circuit can test the range as far as 70 mm.

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Available abstract

Key concepts: Eddy current, Eddy-current sensor, Conductor, Eddy-current testing, Electrical engineering, Current (fluid), Acoustics, Range (aeronautics)