A Low-Cost, Small-Size, and Bluetooth-Connected Module to Detect Faults in Rolling Bearings

Condition monitoring techniques have been successfully applied to detect damaged bearings. However, the signal acquisition and the subsequent processing are typically outsourced to expensive data acquisition boards and complex software, resulting in expensive solutions. As a side effect, the integra...

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Main Authors: Erica Raviola, Franco Fiori
Format: Article
Language:English
Published: MDPI AG 2020-08-01
Series:Applied Sciences
Subjects:
Online Access:https://www.mdpi.com/2076-3417/10/16/5645
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author Erica Raviola
Franco Fiori
author_facet Erica Raviola
Franco Fiori
author_sort Erica Raviola
collection DOAJ
description Condition monitoring techniques have been successfully applied to detect damaged bearings. However, the signal acquisition and the subsequent processing are typically outsourced to expensive data acquisition boards and complex software, resulting in expensive solutions. As a side effect, the integration of condition monitoring systems in wireless sensor networks can be tough to achieve. Aiming to overcome such issues, a low-cost and small-size electronic module to be placed in the proximity of the bearing to be monitored was developed. The acoustic signal delivered by the bearing is acquired, and the corresponding frequency spectrum is evaluated on-board. Based on that, the developed module automatically detects the presence of defects and notifies the remote controller via a wireless connection only when a fault is detected, thus avoiding the use of data cables whilst minimizing the amount of transferred data. Experimental tests carried out on the proposed system assessed the accuracy of the evaluated frequency spectrum, resulting in an amplitude error within <inline-formula><math display="inline"><semantics><mrow><mo>±</mo><mn>0.6</mn><mo>%</mo></mrow></semantics></math></inline-formula>, as well as the fault detection capability in the presence of environmental acoustic noise.
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spelling doaj.art-7f3b7ba0aa7a43b2a666f7fcded919c52023-11-20T10:09:28ZengMDPI AGApplied Sciences2076-34172020-08-011016564510.3390/app10165645A Low-Cost, Small-Size, and Bluetooth-Connected Module to Detect Faults in Rolling BearingsErica Raviola0Franco Fiori1Department of Electronics and Telecommunications (DET), Politecnico di Torino, 10129 Turin, ItalyDepartment of Electronics and Telecommunications (DET), Politecnico di Torino, 10129 Turin, ItalyCondition monitoring techniques have been successfully applied to detect damaged bearings. However, the signal acquisition and the subsequent processing are typically outsourced to expensive data acquisition boards and complex software, resulting in expensive solutions. As a side effect, the integration of condition monitoring systems in wireless sensor networks can be tough to achieve. Aiming to overcome such issues, a low-cost and small-size electronic module to be placed in the proximity of the bearing to be monitored was developed. The acoustic signal delivered by the bearing is acquired, and the corresponding frequency spectrum is evaluated on-board. Based on that, the developed module automatically detects the presence of defects and notifies the remote controller via a wireless connection only when a fault is detected, thus avoiding the use of data cables whilst minimizing the amount of transferred data. Experimental tests carried out on the proposed system assessed the accuracy of the evaluated frequency spectrum, resulting in an amplitude error within <inline-formula><math display="inline"><semantics><mrow><mo>±</mo><mn>0.6</mn><mo>%</mo></mrow></semantics></math></inline-formula>, as well as the fault detection capability in the presence of environmental acoustic noise.https://www.mdpi.com/2076-3417/10/16/5645rolling bearingscondition monitoringreliabilityfault detectionwireless nodeacoustic emissions
spellingShingle Erica Raviola
Franco Fiori
A Low-Cost, Small-Size, and Bluetooth-Connected Module to Detect Faults in Rolling Bearings
Applied Sciences
rolling bearings
condition monitoring
reliability
fault detection
wireless node
acoustic emissions
title A Low-Cost, Small-Size, and Bluetooth-Connected Module to Detect Faults in Rolling Bearings
title_full A Low-Cost, Small-Size, and Bluetooth-Connected Module to Detect Faults in Rolling Bearings
title_fullStr A Low-Cost, Small-Size, and Bluetooth-Connected Module to Detect Faults in Rolling Bearings
title_full_unstemmed A Low-Cost, Small-Size, and Bluetooth-Connected Module to Detect Faults in Rolling Bearings
title_short A Low-Cost, Small-Size, and Bluetooth-Connected Module to Detect Faults in Rolling Bearings
title_sort low cost small size and bluetooth connected module to detect faults in rolling bearings
topic rolling bearings
condition monitoring
reliability
fault detection
wireless node
acoustic emissions
url https://www.mdpi.com/2076-3417/10/16/5645
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