Exploring Piezoelectric for Sound Wave as Energy Harvester
Abstract
This paper presents the characteristic of piezoelectric for sound wave energy harvester. The sound level on
piezoelectric is experimented at range of 35-100 dB. This range is comparable with ambience environmental human
sound of level 50-100 dB. Piezoelectric type Q220-A4-503YB has been used as energy transducer. This type of
piezoelectric has achieved a better performance in term of output power or voltage. The output of piezoelectric
transducer is connected to 3 difference types of harnessing circuitry; Villard voltage multiplier, Dickson voltage
multiplier and full-wave rectifier. The measured results of piezoelectric transducer with and without connected to
external circuitry devices have attained a good agreement with expected theory within the frequency of interest. The
piezoelectric transducer accomplished maximum power response of performance 33.133 dBuW at sound level of 96
dB. The Villard and Dickson voltage multipliers produced output voltage greater than full wave bridges which are
9.817V, 9.593V and 3.504V respectively at 96dB sound intensity level. The results show that the piezoelectric
transducer connected to Villard voltage multiplier produced the best performance. The proposed sound wave energy
harvester offer a better performance and able to replace the problematic battery in wireless signal network.