並列設置型積層圧電素子を用いた振動発電による加速度センサの連続駆動

抄録

The necessity for the development of micro power supply technologies for mobile phones and portable electronics has increased in recent years. Methods of self power generation using the vibration loads of structures have attracted attention as the power supply technologies. In this study, we focused on lead zirconate titanate (Pb(Zr,Ti)O3, PZT) as the generating piezoelectric element. The purpose of the study is to develop a high- efficiency PZT generator element that utilizes the vibration loads in the support members of a structure. However, piezoelectric elements only generate power in the order of several microwatts, so improving their power generation capacity is of the utmost importance. In this paper, experiments of driving the accelerometer for continuously driving using the laminated PZT elements are reported. The accelerometer module device was composed of capacitor, switching circuit, voltage sensor and accelerometer module. The charges generated from the laminated PZT element are charged by the capacitor. And it reaches to the Accelerometer module through the switching circuit. As a result, it is possible to obtain the acceleration information. Based on these results, we confirmed the continuous acceleration sensor.