Ultrasonic Distance Measurement Method by Using the Envelope Model of Received Signal Based on System Dynamic Model of Ultrasonic Transducers

  • Choe, Jin-Hee (School of Robotics, Kwangwoon University) ;
  • Lee, Kook-Sun (Department of Electrical and Information Engineering, SNUT) ;
  • Choy, Ick (School of Robotics, Kwangwoon University) ;
  • Cho, Whang (School of Robotics, Kwangwoon University)
  • Received : 2017.05.10
  • Accepted : 2017.10.31
  • Published : 2018.03.01


In order to acquire an accurate TOF, this paper proposes a method that produces TOF by using a mathematical model for the envelope of the received signal obtained from a system dynamic model of ultrasonic transducer. The proposed method estimates the arrival time of the received signal retrospectively by comparing its wave form obtained after triggering point with its mathematical envelope model. Experimental result shows that the error due to variation of triggering point can be dramatically decreased by implementing the proposed method.


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