发明公开
EP1899699A1 DRUCKSENSOR
审中-公开
- 专利标题: DRUCKSENSOR
- 专利标题(英): Pressure sensor
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申请号: EP05753196.4申请日: 2005-06-20
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公开(公告)号: EP1899699A1公开(公告)日: 2008-03-19
- 发明人: SCHMITT-WALTER, Stefan , SEFFNER, Lutz , GEBHARDT, Sylvia , SCHÖNECKER, Andreas , BRÜCKNER, Bent , RÖDIG, Thomas
- 申请人: Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. , S.W.A.C. Schmitt-Walter Automation Consult GmbH
- 申请人地址: Hansastrasse 27c 80686 München DE
- 专利权人: Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V.,S.W.A.C. Schmitt-Walter Automation Consult GmbH
- 当前专利权人: Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V.,S.W.A.C. Schmitt-Walter Automation Consult GmbH
- 当前专利权人地址: Hansastrasse 27c 80686 München DE
- 代理机构: Hilgers, Hans Hubert
- 国际公布: WO2006136182 20061228
- 主分类号: G01L1/16
- IPC分类号: G01L1/16
摘要:
A pressure sensor has a multiplicity of piezoelectric converter elements which are arranged such that they are essentially parallel to a force-recording or pressure-recording direction. Said converter elements may be in the form of fibres, small bars, plates or the like and may also be in the form of a thick or thin layer. When the converter elements are in the form of fibres, small bars or plates, they are arranged at a distance from one another by means of an insulating material and/or are at least partially embedded in said material. In order to improve such a pressure sensor to the effect that it can also be used for high pressures, for a long service life and for different mechanical applications, a support material having greater mechanical rigidity than the converter elements, in particular in the force-recording or pressure-recording direction, is assigned to at least a number of piezoelectric converter elements or the piezoelectric converter element is applied, in the form of a layer, to a supporting body made from this support material and is electrically contact-connected, for example, by means of a bottom electrode, which is arranged between the converter element layer and the supporting body, and a cover electrode which is applied to an outer side of the converter element layer.
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