CAJ | 학술논문

针对传统的大学物理声速测量实验过程繁琐、测量误差大的不足，设计和制作了一种基于单片机开发的数字化智能声速测量实验系统，能够运用相位比较法精确测量声速数据。该测量系统以MSP430单片机为核心，对声速测量系统的软硬件进行设计，并针对干扰与误差进行去噪与优化处理。测量数据通过RS—485总线与LabVIEW编写的上位机通信，生成测量结果报表。该测量仪用电子测控方式代替传统双踪示波器观察李萨如图的方式，测试结果表明：该装置操作灵活简单，稳定性好，测量精度远高于传统实验装置，有很好的应用前景。
침대전통적대학물리성속측량실험과정번쇄、측량오차대적불족，설계화제작료일충기우단편궤개발적수자화지능성속측량실험계통，능구운용상위비교법정학측량성속수거。해측량계통이MSP430단편궤위핵심，대성속측량계통적연경건진행설계，병침대간우여오차진행거조여우화처리。측량수거통과RS—485총선여LabVIEW편사적상위궤통신，생성측량결과보표。해측량의용전자측공방식대체전통쌍종시파기관찰리살여도적방식，측시결과표명：해장치조작령활간단，은정성호，측량정도원고우전통실험장치，유흔호적응용전경。
Aiming at shortcomings of cumbersome process and large error of sound velocity measuring in traditional college physics experiment,based on technology of MCU,design and fabricate a set of digital intelligent sound velocity measurement experimental system,which makes it possible to measure sound velocity precisely by using phase comparison method. The system use MSP430 MCU as core,and software and hardware of sound velocity measurement system are designed,denoising and optimized processing are carried out,aiming at inter-ference and error. Measurement data communicates with LabVIEW compiled upper computer via RS—485 bus, generate data reports. This measuring instrument replaces traditional method of observing a dual trace oscilloscope’s Lissajous FIG with electronic monitoring and control mode,and test results show that the device is user-friendly and works stably,measurement precision is far higher than traditional experimental device,and has good application prospect.