Abstract
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 temperature transmission device using the laminated PZT elements under vibration loads of air compressor are reported. The temperature transmitting device was composed of capacitor, switching circuit, voltage sensor and temperature sensor. The charges generated from the laminated PZT element are charged by the capacitor. And it reaches to the temperature sensor through the switching circuit. As a result, it is possible to obtain the temperature information, and the laminated PZT generated an electric power for driving the temperature transmitting device by using the vibration of the air compressor. 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.
