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| Seismic Sensors |
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| radioactive:
I've been thinking it would be kind of fun to stick a seismometer out under the lawn somewhere around the house and log the data. I've looked briefly on ebay and search engines for sensors and nothing really stuck out. Anybody here done this just for fun? Would love to hear about your experiences and advice on the sensors. |
| boB:
You might want to try adding strain gage to your search. I think that's what they use for seismographs mostly. https://engfac.cooper.edu/pages/tzavelis/uploads/Strain-Gage%20instrumentation0.pdf |
| EEVblog:
What you need is called a geophone, like this: https://www.ebay.com.au/itm/Geophone-RTC-4-5hz-395ohm-Vert-Geophone-in-case-with-1m-lead-Mueller-clips/361665013385?hash=item5434ea2689:g:S6QAAOSw9V1ac4hf:rk:14:pf:0 For underwater they are called hydrophones. |
| coppercone2:
if you were to do this in a slightly more urban then suburban area with lots of rock/elevation, where you live on a hill, would you be able to get useful seismic data or would it be completely polluted by cars and roads/ |
| EEVblog:
--- Quote from: coppercone2 on January 05, 2019, 11:01:54 am ---if you were to do this in a slightly more urban then suburban area with lots of rock/elevation, where you live on a hill, would you be able to get useful seismic data or would it be completely polluted by cars and roads/ --- End quote --- I used to work at the largest seismic water tank in the southern hemisphere, and we often had to schedule tests in the middle of night and to avoid passing trains many km away. Passing trucks were also a pain. And that was with a properly vibration isolated tank (no such thing as infinitive attenuation). |
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