摘要
虚拟仪器是一种以计算机作为仪器来统一硬件的平台,它具有智能化程度高、复用性强以及可操作性强等优点。参照传统声级计的结构原理,采用MPA 201声压传感器、NI 9234采集卡等硬件,基于Labview软件进行虚拟声级计测试系统开发,实现对声音信号的采集、时域分析、频域分析和计权分析功能。经试验验证,开发的虚拟声级计测试系统可扩展性强,操作面板简洁美观,功能完善,具有较好的可靠性与稳定性。
Virtual instrument is a platform for unifying hardware with computer.It has the advantages of high intelligence,strong reusability and maneuverability.In this paper,virtual instrument technology is used to develop the virtual sound level meter test system.According to the structure principle of traditional sound level meter,the virtual sound level meter testing system adopts MPA 201 sound pressure sensor,NI 9234 acquisition card and other hardwares based on Labview software.The function of sound signal acquisition,time-frequency domain analysis and weighted analysis is realized.The developed virtual sound level meter test system has strong expansibility,simple and beautiful operating panel,perfect function.And the test results show that the developed virtual sound level meter test system has good reliability and stability.
作者
邓召文
袁野
DENG Zhaowen;Yuan Ye(Hubei Key Laboratory of Automotive Power Train and Electronic Control,School of Automotive Engineering,Hubei University of Automotive Technology,Shiyan 442002,China)
出处
《拖拉机与农用运输车》
2019年第6期23-27,共5页
Tractor & Farm Transporter
基金
国家自然基金项目(51375151)
湖北省科技支撑计划项目(2015BAA046)
湖北省教育厅重点项目(D20171801)
湖北省重点实验室资助项目(ZDK1201402)
湖北省重点实验室创新基金项目(2015XTZX0423)
关键词
声级计
虚拟仪器
LABVIEW
时频域分析
计权分析
Sound level meter
Virtual instrument
Labview
Time-frequency domain analysis
Weighted analysis
