基于NIELVIS和LabVIEW的声速测定实验的改进  

Improvement of Sound Veloctity Measurement Experiment based on NI ELVIS and LabVIEW

作　　者：万志龙[1] 金雪尘[1] 王刚[1] 舒前柳 张倩倩 史福斌 WAN Zhi-long;JIN Xue-ehen;WANG Gang;SHU Qian-liu;ZHANG Qian-qian;SHI Fu-bin(Changzhou Institute of Teehnology,Jiangsu Changzhou 213032)

机构地区：[1]常州工学院,江苏常州213032

出　　处：《大学物理实验》2018年第2期73-76,共4页Physical Experiment of College

基　　金：常州工学院大学生创新创业训练计划项目(J150246;J2016081);物理实验中心实践教学改革与发展研究(A1-4400-18-071)

摘　　要：对传统声速实验进行改进,设计了基于NI ELVIS平台和LabVIEW虚拟仪器的声速测定实验系统。该系统在NI ELVIS平台基础上采用虚拟信号发生器和虚拟示波器代替传统信号发生器和示波器,实现了测量信号的实时显示、采集、存储和定量测量。实践表明,该系统能有效提高实验的测量精度,有利于学生更好地理解和掌握实验,提高实践创新能力。The traditional sound velocity measurement experiment is improved. Based on NI ELVIS platform and LabVIEW virtual instrument,an experimental system of sound velocity measurement was designed. By virtue of virtual signal generator and virtual oscilloscope replaced the traditional signal generator and oscilloscope in the NI ELVIS platform,the system realizes quantitative measurement,real time data display,data acquisition and data storage.The practice shows that the experimental system not only can improve the accuracy of measurement effectively,but also can help students to better understand the experimental principle,and improve their ability of creation and practicality.

关 键 词：声速测定 NI ELVIS 虚拟仪器 驻波法 

分 类 号：O343[理学—固体力学]