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 isto 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 module using the laminated PZT elements under vibration loads of air compressor are reported. Acceleration monitoring system 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. To show the laminated PZT element as an effective electric power source, this experiment has driven the accelerometer module with two batteries. As a result, it is possible to obtain the acceleration information, and the laminated PZT generated an electric power for driving the acceleration module by using the vibration of the air compressor. And by driving the battery, it was shown that the laminated of PZT element is effort of a electric power supply method. In this experiment, Receivable distance of the data has been evaluated. Based on these results, the laminated PZT can be applied to monitoring sensor and other applications.
