Journal of Sensor Science and Technology (센서학회지)

The Korean Sensors Society (한국센서학회)
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Noncontact displacement sensors using magnetic scale

자기스케일을 이용한 비접촉식 변위센서

  • Lee, Sung-Pil (Department of Electronic Engineering, Kyungnam University) ;
  • Seo, Young-Jin (Department of Electronic Engineering, Kyungnam University)
  • Published : 2009.05.31
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Abstract

This paper studies on the noncontact displacement sensor system to detect the displacement of the cylinder rod. For an inexpensive and a simple process, magnetic scales are printed on the cylinder rod, and magnetized by the specially designed magnetizer that has an yoke through the alternation of N and S pole. Noncontact displacement sensor system consists of cylinder with magnetic scales, Hall sensor, linear guide, controller and display. The system can detect the displacement of moving cylinder with 5 cm/sec in the case of 1 mm magnetic scale. It shows a possibility of position detection of hydraulic cylinder and air cylinder.

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References

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