标题：The design of millimeter-level ultrasonic distance measurement circuit
作者：Chen, Yi-Kang ;Zhang, Zheng-Jie ;Chen, Ming-Rui
作者机构：[Chen, Yi-Kang ] Institute of electrical engineering, Chinese academy of sciences, Beijing 100190, China;[Zhang, Zheng-Jie ] Department of Precision I 更多
会议名称：2012 International Conference on Materials Engineering and Automatic Control, ICMEAC 2012
会议日期：April 27, 2012 - April 29, 2012
来源：Advanced Materials Research
摘要：By analyzing the causes of ultrasonic distance measurement error, through the use of temperature compensation, and increasing the measured time interval to the microsecond level, ultrasonic ranging circuit can achieve the millimeter level. After the circuit design and construction, the ultrasonic range finder was calibrated from 1cm to 21cm. The measurement results show that in the scope of work, the linearity reached 0.999623; the measurement of the ultrasonic range finder achieved the millimeter level. © (2012) Trans Tech Publications, Switzerland.