Wave Power Generation by Piezoelectric Sensor Attached to a Coastal Structure

Table 1

Piezo element specifications.

Items	Value
Resonant frequency; (Fr)	15.0 ± 1.0 KHz
Main electrostatic capacity	9000 ± 30% pF at 1000 Hz/1 V
Resonant impedance	500 Ω max
Metal plate material	SUS304
Metal plate diameter	12.0 ± 0.10 mm
Metal plate thickness	0.20 ± 0.02 mm
Ceramic diameter	9.0 ± 0.20 mm
Total height	0.32 ± 0.05 mm
Insulation resistance	100 MΩ min
Maximum input voltage	30 Vp-p
Operating temperature range	−20°C to +70°C