标题：Improvement of Ultrasonic Distance Measuring System
作者：Jiang, Yu; Song, Rui; Yuan, Mingting
作者机构：[Jiang, Yu; Yuan, Mingting] Qingdao Univ, Coll Automat & Elect Engn, Qingdao 266071, Peoples R China.; [Jiang, Yu; Song, Rui] Shangdong Univ, Coll C 更多
会议名称：4th Annual International Conference on Wireless Communication and Sensor Network (WCSN)
会议日期：DEC 15-17, 2017
来源：4TH ANNUAL INTERNATIONAL CONFERENCE ON WIRELESS COMMUNICATION AND SENSOR NETWORK (WCSN 2017)
摘要：This paper mainly introduces a kind of ultrasonic distance measuring system with AT89C51 single chip as the core component. The paper expounds the principle of ultrasonic sensor and ultrasonic ranging, hardware circuit and software program, and the results of experiment and analysis. The hardware circuit based on SCM, the software design adopts the advanced microcontroller programming language. The amplitude of the received signal and the time of ultrasonic propagation are regulated by closed loop control.[1,2] The double closed loop control technology for amplitude and time improves the measuring accuracy of the instrument. The experimental results show that greatly improves the measurement accuracy of the system.