Influence evaluation of infrasound by using both of biological information and infrasound sensors in the vicinity of wind turbine facilities
In recent years, wind power generation attracts attention. However, problem of low frequency sound generated by wind turbines and its influence on human beings have been gradually taken up in society. We investigated the influence of ultra-low frequency sound generated from wind turbines on human subjects/testers from both aspects of measurement of audible/infrasonic sound and multiple biometric information sensing systems. In the experiment outside, portable electroencephalographs and pulse wave sensors are used because only such small equipment can be used to perform biological information sensing outdoor, in the vicinity of a wind turbine facility. In order to calculate relax trends from the obtained biological information, a method based on previous analyses for obtaining relaxation degrees R is used. It is coming from the fact that content rate of each frequency band included in the electroencephalogram waveform varies depending on the human mental state in the brain wave. Also, in analyzing the heart beat wave, we used an analytical method to find stress degrees S by using the balance of autonomic nerve that can be calculated from the heart beat signal fluctuations. Here we would like to introduce the result using the above analyses methods for almost 30 examples.
Megumi NAGAMATSU, Masa-yuki YAMAMOTO
Kochi University of Technology, Japan
Proceedings of the 23rd International Congress on Acoustics, 9–13 September 2019, Aachen, Germany: pages 2992–2999
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