Tremblay, Simon, Peng, Zitai, Knox, David et Dumond, Patrick.
2025.
« Testing a low-cost sensor solution for machine condition monitoring ».
In Proceedings of the CSME-CFDSC-CSR 2025 International Congress (Montreal, QC, Canada, May 25-28, 2025)
Coll. « Progress in Canadian Mechanical Engineering », vol. 8.
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Résumé
The MachMoS sensor node is a compact, wireless system for vibro-acoustic and temperature monitoring first presented in 2024. It is controlled by an ESP32-C3 and integrates a KX134 MEMS accelerometer, ICS-43434 microphone, and pt1000 resistive temperature detector. The sensor is enclosed in a low-cost enclosure which is made of a combination of machined aluminum components, a fused filament fabricated lid, and off-the-shelf hardware. This paper reports on qualification testing of the device conducted to date. Due to memory constraints, accelerometer and microphone data rates were reduced to 12.6kHz and 21.854kHz, respectively, down from 25.6kHz and 51.2kHz. Vibro-acoustic testing confirmed the MachMoS node reliably captures vibrations up to 6kHz and acoustic signals beyond 7kHz. Frequency content analysis showed consistent peak frequency discrepancies of 1.5% and 0.7%, likely due to clock inaccuracies. Nonetheless, anti-aliasing filters were effective. Ingress protection testing confirmed an IPX7 rating after enclosure refinements, reinforcing the applicability of fused filament fabrication in the low volume production of low-cost enclosures. Temperature testing demonstrated accuracy of ±0.25°C and operation down to -15°C. The MachMoS sensor node exhibits reliable sensing capabilities, with future work focused on code optimization, clock accuracy, and extended temperature range.
| Type de document: | Compte rendu de conférence |
|---|---|
| Éditeurs: | Éditeurs ORCID Hof, Lucas A. NON SPÉCIFIÉ Di Labbio, Giuseppe NON SPÉCIFIÉ Tahan, Antoine NON SPÉCIFIÉ Sanjosé, Marlène NON SPÉCIFIÉ Lalonde, Sébastien NON SPÉCIFIÉ Demarquette, Nicole R. NON SPÉCIFIÉ |
| Date de dépôt: | 18 déc. 2025 15:33 |
| Dernière modification: | 18 déc. 2025 15:33 |
| URI: | https://espace2.etsmtl.ca/id/eprint/32516 |
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