| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a power generation method, a generator and a power generation device by vibration, for converting kinetic energy by fine vibration into electrical energy and taking the electrical energy as electric power. <P>SOLUTION: When a weight 1 is displaced downward by vibration, a contact 13 pressurizes a piezoelectric element 19 with contacting with an electrode 15 and generates a voltage. When the weight 1 is displaced upward, a contact 14 pressurizes a piezoelectric element 20 with contacting with an electrode 16 and generates the voltage. The voltages, generated from the piezoelectric elements 19, 20, are of identical pole each other. The electric power of the piezoelectric element 19 is continuously outputted between A-B, and the electric power of the piezoelectric element 20 is continuously outputted between A-B' every half period by a mechanical switching operation interlocked with the vibration of the contacts 13, 14 and the electrodes 15, 16. A rectifying circuit is not needed because the same pole electric power is obtained directly, by using a pair of piezoelectric elements. Thus, when the voltage is lower than the minimum driving voltage of a diode, that is it means that even if it is very small fine vibration, the electric power can be extracted. <P>COPYRIGHT: (C)2006,JPO&NCIPI |
