Energy Harvesting Using Piezoelectric Plates for RFID Applications
摘要
The field of piezoelectric energy harvesting represents a viable way of sustainably converting mechanical energy available in the ambient environment, such as body movement, vibrations, or pressure, into usable electric energy. Piezoelectric energy harvesting relies on the piezoelectric effect which allows certain crystalline materials that, when mechanically stressed, produces a generated potential difference. This technology is well suited to applications where battery replacement is difficult, as in wireless sensor networks, biomedical implants, and wearable devices. In this study a prototype footstep power generation system via piezoelectric plates was developed and tested. The setup consists of ten piezoelectric discs interfaced, via an amplifier and rectifier, to a rechargeable energy storage, monitored via an Arduino Uno microcontroller. An RFID module implements user authentication. The experimental results reveal that average outputs from 50 kg and 60 kg participants were 0.556 V/0.064 mA and 0.669 V/0.081 mA respectively.