< p >我使用一个< a href = " https://imgur.com/sXAWttY " rel = " nofollow noreferrer " >便宜的地震检波器< / >来测量本地HGV流量对建筑物的影响。该设备被连接到一个覆盆子π,< a href = " https://www.tring web - design.co.uk/wp content/uploads/2016/07/dsc_0002 - 848 x450.jpg”rel = " nofollow noreferrer " >卷逻辑音频卡< / >。信号是美联储通过线。我保存的读数装置通过arecord WAV音频文件:< / p > < pre > <代码> arecord - f S16_LE - r - c 11025——86400年max-file-time use-strftime Y % - % - % d_ % H: % m: % S。wav < /代码> < / pre > < p > < a href = " https://imgur.com/s1Qi1g9 " rel = " nofollow noreferrer " > < / >,我在Audacity可以正常化wav文件,看到波形变化HGV开车过去。After reading a few articles about other experiments doing the same I see that I need to convert the readings from the device into peak particle velocity (PPV) and VDV (Vibration Dose Value) for any of it to make sense in terms of ISO/BS standards (BS7385 & BS5228-2 for example) and assessing the likely effect on a structure of local traffic vibrations. That's where I get unstuck, how to convert the data I have into PPV / VDV? I don't know about a few things, like whether the the arecord sampling frequency and depth are correct, I probably shouldn't be normalizing waveforms in Audacity (i'm only doing that so I can see if it's working).
I do know that I am looking for frequencies between 15 and 150Hz and that my experiment isn't exactly scientific from the Lego Seismometer, a starting point for possible future more detailed data collection and analysis is all that I need.