센서학회지 (Journal of Sensor Science and Technology)

  • 제23권1호
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  • Pages.46-50
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  • 2014
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  • 1225-5475(pISSN)
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  • 2093-7563(eISSN)
한국센서학회 (The Korean Sensors Society)
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초음파 이용 거리측정을 위한 센서 개발에 관한 연구

Study on the Development of Sensors for Distance Measure Using Ultrasonic

  • 박근철 (부산대학교 의학전문대학원 의공학협동과정) ;
  • 이승희 (부산대학교 병원 방사선종양학과) ;
  • 박창수 (부경대학교 IT 융합응용공학과) ;
  • 김동원 (부산대학교 병원 방사선종양학과) ;
  • 김원택 (부산대학교 병원 방사선종양학과) ;
  • 전계록 (부산대학교 의학전문대학원 의공학협동과정)
  • Park, Geun Chul (Department of Biomedical Engineering, School of Medicine, Pusan National University) ;
  • Lee, Seung Hee (Department of Radiation oncology, Pusan National University Hospital) ;
  • Park, Chang Soo (Department of IT Convergence and Application Engineering, Pukyong National University) ;
  • Kim, Dong Won (Department of Radiation oncology, Pusan National University Hospital) ;
  • Kim, Won Taek (Department of Radiation oncology, Pusan National University Hospital) ;
  • Jeon, Gye Rok (Department of Biomedical Engineering, School of Medicine, Pusan National University)
  • 투고 : 2013.10.14
  • 심사 : 2013.12.30
  • 발행 : 2014.01.29
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초록

In this paper, we report a novel algorithm based on phase displacement, which supplements conventional TOF methods for distance measurement using an ultrasonic wave. The proposed algorithm roughly measures the distance between the transmission part and the receiving part by using the initial TOF. Thereafter, the precise distance is determined by measuring the phase displacement value between the synchronizing transmission signal and the signal obtained at the receiving end. A distance measurement experiment using a micrometer was performed to verify the accuracy of the ultrasonic wave sensor system. We found that the mean errors from the one adopting the distance measurement algorithm based on phase displacement varied from a minimum of 0.03 mm to a maximum of 0.09 mm. In addition, the standard deviation varied from a minimum of 0.04 mm to a maximum of 0.07 mm, thus giving a precision of ${\pm}0.1$ mm.

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