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21. 发明授权

US4737676A Transducer with a flexible piezoelectric layer as a sensor element 失效
标题翻译：具有柔性压电层的传感器作为传感器元件
公开(公告)号：US4737676A
公开(公告)日：1988-04-12
申请号：US942783
申请日：1986-12-17
申请人： Gunter Engel , Peter W. Krempl , Klaus-Christoph Harms , Helmut List
发明人： Gunter Engel , Peter W. Krempl , Klaus-Christoph Harms , Helmut List
IPC分类号： H01L41/08 , G01L1/16 , G01L9/08 , H01L41/113
CPC分类号： H01L41/1132
摘要： A transducer comprising a flexible piezoelectric layer as a sensor element for measuring mechanical quantities in hollow bodies, above all pressures in pipes, the opposite sides of this layer being bonded to electrically-conductive contact layers and being connectable via leads to a display and evaluation unit. In order to achieve a high temperature stability in such transducers and to make them suitable for use at temperatures exceeding 80.degree. C., the piezoelectric layer is proposed to consist of wurtzite or sphalerite. One of the electrically-conductive contact layers can be of some heat-resistant, flexible supporting material, for instance flexible metal foil, such as Cu-Be foil, or a sheet of plastic, one or both of whose sides are metallized, and the other electrically-conductive contact layer can be a metal coating applied by evaporation.
摘要翻译：一种传感器，包括柔性压电层作为用于测量中空体中的机械量的传感器元件，高于管道中的所有压力，该层的相对侧被粘合到导电接触层并且可通过导线连接到显示器和评估单元。为了在这种换能器中实现高温稳定性并使其适合于在超过80℃的温度下使用，压电层被提出由纤锌矿或闪锌矿组成。导电接触层中的一个可以是一些耐热柔性的支撑材料，例如柔性金属箔，例如Cu-Be箔，或一块塑料，其一面或两面被金属化，以及其它导电接触层可以是通过蒸发施加的金属涂层。

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