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    DRUCKSENSOR
    1.
    发明公开
    DRUCKSENSOR 审中-公开

    公开(公告)号：EP1899699A1

    公开(公告)日：2008-03-19

    申请号：EP05753196.4

    申请日：2005-06-20

    申请人： Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. ,  S.W.A.C. Schmitt-Walter Automation Consult GmbH

    发明人： SCHMITT-WALTER, Stefan ,  SEFFNER, Lutz ,  GEBHARDT, Sylvia ,  SCHÖNECKER, Andreas ,  BRÜCKNER, Bent ,  RÖDIG, Thomas

    IPC分类号： G01L1/16

    CPC分类号： A61B5/1172 ,  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.

    摘要翻译： 压力传感器具有多个压电转换器元件，这些压电转换器元件布置成使得它们基本平行于力记录或压力记录方向。 所述转换器元件可以是纤维，小棒，板或类似物的形式，并且也可以是厚或薄层的形式。 当转换器元件为纤维，小棒或板的形式时，它们通过绝缘材料彼此间隔开设置和/或至少部分地嵌入所述材料中。 为了改进这种压力传感器，使其也可以用于高压，长使用寿命和不同的机械应用，具有比转换器元件更大的机械刚度的支撑材料，特别是力 - 记录方向或压力记录方向分配给至少多个压电转换器元件，或者压电转换器元件以层的形式施加到由该支撑材料制成的支撑体并且电接触连接，用于 例如借助布置在转换器元件层与支撑体之间的底部电极以及应用于转换器元件层的外侧的覆盖电极。