| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an improved wire structure of a piezoelectric material having the slender piezoelectric material, a metal core and a conductive sheath. <P>SOLUTION: The metal core 14 is surrounded by the slender piezoelectric material 12 and functions as a first electrode. The conductive sheath 16 covers a selected region of the piezoelectric material and functions as a second electrode of the structure 10 of the piezoelectric material. The piezoelectric material is of barium titanate ceramic fiber, and the unleaded structure is attained. The wire structure of the piezoelectric material is polarized at low polarization voltages and at low temperature levels, and the required voltage for mechanical operation is also lower. When used as an electric power generating device, the wire structure of the piezoelectric material supplies electric power to a tire electronic equipment component, such as a rotation speed counter. <P>COPYRIGHT: (C)2006,JPO&NCIPI |
