The Output Character Analysis of the Piezoelectric Cantilever Power Generator for Ambient Vibration Harvesting
High output power can be obtained by optimizing the piezoelectric battery structure parameters. Several piezoelectric battery prototypes with dimensions around 30mm×8mm×1mm have been set up to test the power from ambient vibration harvesting. Output power generation of 130 µW at 93.2 Hz is obtained for a typical device with cantilever beam width 8mm. The test results are consistent with the theory analysis and indicate that a piezoelectric battery for ambient vibration energy harvesting is a promising electric power source for wireless sensors nodes with micro-power consumption.
Linli Xu, Wenya Tian and Elwin Mao
X. Z. Du et al., "The Output Character Analysis of the Piezoelectric Cantilever Power Generator for Ambient Vibration Harvesting", Applied Mechanics and Materials, Vols. 80-81, pp. 865-869, 2011