Self-Powered Multi-Parameter Wireless Sensing for Condition Monitoring of Marine Propulsion Shafts
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Abstract
Self-powered multi-parameter wireless sensing enables autonomous condition monitoring of rotating marine machinery, where wired power delivery and frequent maintenance are impractical. This paper presents a self-powered wireless sensor system (SP-WSS) that integrates a compact electromagnetic energy harvester (EH) with sensors for shaft speed, torsional strain/vibration, temperature, and power monitoring. The system was installed on a 300 mm training-ship propulsion shaft and evaluated for 7.2 h under real operating conditions. The harvester delivered an average power of 487.87 mW, exceeding the system demand of 374 mW by 30.4%, and maintained wireless data acquisition during the investigated period. The measured torsional responses captured operational shaft behavior and provided fatigue-relevant loading histories. These results confirm the feasibility of the proposed SP-WSS as a practical sensing platform for prognostics and health management (PHM) applications in marine propulsion systems.
How to Cite
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Self-powered wireless sensor system, Marine propulsion shaft, Electromagnetic energy harvesting, Multi-parameter monitoring, Flexible PCB coil, Condition monitoring, Real-ship deployment, Prognostics and health management
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