Structural parameter design of planar eddy current coils

Peng Wang, Tianhuai Ding, Zhibin Fu

Research output: Contribution to journalArticlepeer-review

4 Scopus citations

Abstract

The effects of a planar eddy current sensor's coil structural parameters on the sensor's sensitivity were analyzed using the Biot-Savart-Laplace theory to improve the sensitivity. A formula was derived to calculate the magnetic field gradient of the planar eddy current coil. The relationships between the magnetic induction density and the distance between coils with various structural parameters were determined from simulations and experiments. The results show that the planar eddy current coil sensitivity increases with increasing number of coils and outside coil diameter, and with decreasing inner coil diameter.

Original languageEnglish
Pages (from-to)1959-1961
Number of pages3
JournalQinghua Daxue Xuebao/Journal of Tsinghua University
Volume47
Issue number11
StatePublished - Nov 2007
Externally publishedYes

Keywords

  • Planar eddy current coil
  • Sensitivity
  • Structural parameter

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