Design of an Energy Harvesting-Based Vibration Sensor for Predictive Maintenance

Abstract:
This research involved the design of a passive vibration harvester utilized as a sensor for measuring the frequency of periodic vibrations. The oscillator design is aligned to a specific frequency and uses the eigenfrequencies of the material and geometry. Combined with a piezoelectric structure, energy conversion sufficient for signal generation occurs only at resonance. This creates an active sensor system that does not need an external energy supply for signal generation.