센서학회지 (Journal of Sensor Science and Technology)

  • 제16권4호
  • /
  • Pages.263-269
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  • 2007
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  • 1225-5475(pISSN)
  • /
  • 2093-7563(eISSN)
한국센서학회 (The Korean Sensors Society)
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선형 전기접촉으로 계측해상도가 향상된 저항성 변위센서

Resistive displacement transducer enhanced measurement resolution by electrical line contact

  • 김경아 (충북대학교 의과대학 의공학교실) ;
  • 최성수 (충북대학교 의과대학 의공학교실) ;
  • 차은종 (충북대학교 의과대학 의공학교실)
  • Kim, Kyung-Ah (Biomedical Engineering Department, School of Medicine, Chungbuk National University) ;
  • Choi, Seong-Su (Biomedical Engineering Department, School of Medicine, Chungbuk National University) ;
  • Cha, Eun-Jong (Biomedical Engineering Department, School of Medicine, Chungbuk National University)
  • 발행 : 2007.07.31
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초록

Although variable resistance displacement transducer is widely applied for its technical simplicity, electrical point contact limits measurement resolution (precision). The present study introduced roller shaped structure for electrical line contact. Proto-type transducer was developed and measurement characteristics were compared with a commercialized product. When the displacement was varied with steps of 5 mm, 1 mm, and down to 0.1 mm, the correlation coefficient between resistance and displacement decreased lower than 0.9 in the commercialized product while the proto-type transducer maintained values higher than 0.99. Therefore, the measurement resolution was enhanced by approximately 10 times. Since manufacturing also seemed easier, the present results would enable more accurate and less expensive manufacturing of variable resistance displacement transducer.

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참고문헌

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