发明名称 |
Fiber-optic electric field sensor with piezoelectric body sensor |
摘要 |
A fibre-optic sensor for measuring a particular directional component of an electric field comprises a piezoelectric body (4) and a glass fiber (5a) which is rigidly connected to the piezoelectric body (4) in a given length section. A crystal class and a crystallographic orientation of the piezoelectric body (4) is selected in such a manner that only the directional component which is parallel to a given body axis (h) of the piezoelectric body (4) causes a change in a length of the glass fiber (a) by means of an inverse piezoelectric effect. The change in length is measured interferometrically. In a preferred embodiment, the piezoelectric body has the shape of a disk, of a plate or of a hollow cylinder.
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申请公布号 |
US4929830(A) |
申请公布日期 |
1990.05.29 |
申请号 |
US19880267299 |
申请日期 |
1988.11.04 |
申请人 |
ASEA BROWN BOVERI AG |
发明人 |
BOHNERT, KLAUS;KAUFMANN, MEINOLPH;NEHRING, JUERGEN |
分类号 |
G01R15/24;G01R29/08;G01R29/12;G02B6/00 |
主分类号 |
G01R15/24 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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