Measurement and Analysis of Electric Discharge Sound by Optical Wave Microphone
Measurement and Analysis of Electric Discharge Sound by Optical Wave Microphone
复制标题
光波麦克风放电声测量与分析
DOI：
10.2184/lsj.37.379
复制
发表时间：
2009
期刊：
影响因子：
--
通讯作者：
Y. Sonoda
中科院分区：
文献类型：
--
作者：
F. Mitsugi;Shota Suyama;T. Ikegami;T. Nakamiya;Y. Sonoda
该方法基于可见激光束的夫琅和费衍射，可以在不干扰声场的情况下探测声波。本文采用光波传声器测量表面放电声，并进行频率分析。采用典型的电容式传声器进行比较。表面放电声的分析结果表明，光波传声器在聚光镜传声器无法测量到100 kHz以上的高频声波。该方法可用于操作过程中放电状态的诊断。
This method, which is based on Fraunhofer diffraction of visible laser beam, is very useful to detect sound waves without disturbing the sound fi eld. In this work, we measured the sound of the surface discharge by optical wave microphone and performed frequency analysis. A typical condenser microphone was used for comparison. The analytical results of the surface discharge sound showed that the optical wave microphone measured high frequency sound waves over 100 kHz where the condenser microphone was not available. This method may be available to diagnose the discharge state during operation.