摘要
利用实验室虚拟仪器工程平台(LabVIEW)设计噪声功率级测定系统。采用多个驻极体电容传声器同步采集多点信号,设计电路对信号进行调理,调理后数据经由数据采集卡传输到计算机。基于采集到的数据,经由声压、声压级、声功率级层级公式对数据进行处理,计算出测量表面平均声压级和声功率级,并利用二维图实时显示分析结果。系统方法简单有效,二维图表能方便直观地显示测量结果。
A large - scale testing instrument for temperature and humidity is developed on base of the double - temperature principle. An introduction is given on the working principle and the system components, and relevant tests are conducted to get the results and conclusions. The technical indicators of the instrument are superior to the requirements of the corresponding verification regulation. The instrument can serve as an accurate and reliable device for the verification and calibration of various thermo - hygrometers.
出处
《计测技术》
2013年第2期45-47,66,共4页
Metrology & Measurement Technology
