机械与电子Issue(8)：66-69,4.
基于40kHz超声波测距系统的设计
Design of Ultrasonic Distance Measurement System Based on 40 kHz
摘要
Abstract
In the ultrasonic ranging technology,ultrasonic waves are too high in frequency,attenua tion faster,impact measurement range; ultrasonic frequency is too low,affected by the outside noise interference is greater,low measurement accuracy.In order to avoid this problem,the system adopts 40 kHz ultrasonic 8 ～ 16 pulse group,with CX20106A integrated chip as the receiving circuit.The hardware used AT89C51 microcontroller as a signal control and processing circuit,the software adopts C language program.The test results show that:the ranging system within the range of 0.05～3 m,the relative error is less than 3％.Can be used in high precision in the environment.关键词
超声波测距/超声波探头/CX20106A/AT89C51Key words
ultrasonic ranging/ ultrasonic probe/ CX20106A/ AT89C51分类
信息技术与安全科学引用本文复制引用
兰羽..基于40kHz超声波测距系统的设计[J].机械与电子,2013,(8):66-69,4.基金项目
陕西工业职业技术学院院级科研项目 （）
