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Induction coil sensors—a review

FEATURED ARTICLE REVIEW ARTICLE

Slawomir Tumanski

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REVIEW ARTICLE

This review describes induction coil sensors, which are also known as search coils, pickup coils or magnetic loop sensors. The design methods for coils with air and ferromagnetic cores are compared and summarized. The frequency properties of coil sensors are analysed and various methods for output signal processing are presented. Special kinds of induction sensors, such as Rogowski coil, gradiometer sensors, vibrating coil sensors, tangential field sensors and needle probes are described. The applications of coil sensors as magnetic antennae are also presented.


PACS

07.07.Df Sensors (chemical, optical, electrical, movement, gas, etc.); remote sensing

84.32.Hh Inductors and coils; wiring

07.55.-w Magnetic instruments and components

Subjects

Electronics and devices

Instrumentation and measurement

Dates

Issue 3 (March 2007)

Received 17 August 2006, in final form 7 November 2006

Published 19 January 2007



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