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A Long Range Accurate Ultrasonic Distance Measurement System by Using Period Detecting Method  

Lee, Dong-Hwal (부산대학교 지능기계공학과, 한국 LPS)
Kim, Su-Yong (부산대학교 지능기계공학과, 한국 LPS)
Yoon, Kang-Sup (대구대학교 자동차산업기계공학부)
Lee, Man-Hyung (부산대학교 기계공학부)
Publication Information
Journal of the Korean Society for Precision Engineering / v.24, no.8, 2007 , pp. 41-49 More about this Journal
Abstract
In this paper, we proposed a new ultrasonic distance measurement system with high accuracy and long range. To improve accuracy and enlarge range, the time of flight of ultrasonic is calculated by the period detecting method. In the proposed ultrasonic distance measurement system, the ultrasonic transmitter and receiver are separated but synchronized by RF(Radio frequency) module. The experiment has been implemented from short distance 1m to maximum available distance 30m. And the period detecting method is compared with the conventional threshold level method. Experimental results show the accuracy and range of the distance measurement are improved by this period detecting method.
Keywords
Ultrasonic; Distance measurement system; Time of flight; Period detecting method;
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Times Cited By KSCI : 1  (Citation Analysis)
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