Shake Boom stand alone for infra sound logging

Developers
1

Hello.
Can somebody help with this issue.
We have acquired a rasberry boom shake to detect infrasound in residences.
The goal is to record low-frequency noise conditions over a period of time.
Windmills. traffic, industry etc. Which has a big impact on the quality of life for many people.
We would like to know if it is possible to modify the Shake-Boom
system, so we can set the system to shut down automatically, after a number of days.
The recording will run stand alone mode.
At the same time, Shake-Boom must be able to record a second audio reference sound channel. This channel should be used as a reference to the boom channel. How the encoding and format for this channel is not clear yet, but we need to reference the power in the infra sound with a second channel, ranging from 20 to 200
First of all, we would like to know if it is possible to use Boom Shake in this way. by adding extra channels, and set a shut down command by date.

regards
Lasse Luffe

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2

The first part is easy - read up on the “at” command.
With that, you specify a data and time and the command to run (e.g. shutdown) at that tim/date.

The second I don’t think you can do with the shake, for two reasons:

  1. The sample frequency is 100Hz, so you can only record signals at half of that frequency (50Hz) max.
  2. There is only a single transducer. it has a mechanical filter limiting it’s frequency response.
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3

Hello Luffe, welcome to our community, and thanks for your interest in one of our models!

The RBOOM will be perfect to record all that low-freq noise, especially if installed with wind noise reduction solutions, as shown in our manual: Raspberry Boom (RBOOM/ RS&BOOM) Infrasound Monitors — Instructions on Setting Up Your Raspberry Shake

Regarding the automatic shut down, you can execute this via cronjob, and this link provides an example on how to do so: https://jarrodstech.net/how-to-shut-down-raspberry-pi-automatically-with-cron/

With the current RBOOM model, it is not possible to add other channels as the unit is set to use the infrasound sensor as primary and only channel. If you wish to add this feature, then you will have to assemble it yourself by equipping a different sensor (our sampling is set at 100 Hz, as Philip mentioned) and then installing this custom unit close to the RBOOM, so that you can then cross-reference the recorded data.

If you have any other question(s), I remain available.