| 摘 要: 利用单片机和超声波传感器可以方便准确的实现非接触距离测量，系统以STC89C52为核，选用HC－ SR04超声波模块进行超声波发送和接收，采用时差法测距，结合LabVIEW强大的数据采集、测量分析和存储显示等功 能，可以实现对测量过程的实时记录存储和显示，还可根据用户需求选定测速区间，设定超限报警等功能，可以有效实 现短距离、中低速环境下距离和速度的数字化测量，提高了测量效率和精度。 |
| 关键词: LabVIEW；超声波；单片机；测速 |
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中图分类号: TP319
文献标识码: A
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| 基金项目: 青海民族大学本科教学研究项目:基于虚拟仪器技术的《微机原理与接口技术》课程学生创新能力培养研究与实践(2016-BKJXZD-02). |
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| The Ultrasonic Velocity Measurement System Based on LabVIEW |
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WANG Yongning,LI Ziqing
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( College of Physical and Electronic Information Engineering, Qinghai Nationalities University, Xining 810007, China)
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| Abstract: The single-chip microcomputer and the ultrasonic sensor can be applied to accurately implement the noncontact distance measurement.Based on STC89C52,the system uses the hc-sr04 module to transmit and receive ultrasonic waves.By measuring the distance through the time-difference method and combining LabVIEW' s powerful functions of data acquisition,measurement analysis and storage display,the real-time recording,storing and displaying of the measurement process are achieved.Additionally,the system can select the velocity measurement area according to users' requirements and set the over-limit alarm,which can effectively achieve the digital measurement in the short distance and low speed environment,and improve the measurement efficiency and accuracy. |
| Keywords: LabVIEW;ultrasonic;single-chip;measuring speed |
