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    PIEZORESISTIVER WANDLER
    1.
    发明公开
    PIEZORESISTIVER WANDLER 有权
    加速度传感器与压阻转换器

    公开(公告)号：EP2545386A1

    公开(公告)日：2013-01-16

    申请号：EP11707797.4

    申请日：2011-02-28

    申请人： Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V.

    发明人： KÜLLS, Robert ,  NAU, Siegfried

    IPC分类号： G01P15/12

    CPC分类号： G01P15/123

    摘要： Described is a piezoresistive transducer comprising a framework having a support element, attached to which is a bending element which undergoes a deformation relative to the support element when a force acts on it, which has a neutral axis the length of which does not change during the deformation, and attached to which is an expansion body having a piezoresistive material and which converts the deformation of the bending element into an electrically detectable change in resistance. The invention is characterized in that the support element and the bending element at least regionally delimit a gap on at least two sides, in that at least one expansion body is provided which locally connects the support element and the bending element in the region of the gap in a bridge-type and self-supporting manner, and in that the at least one expansion body has an expansion-body longitudinal extent which intersects the neutral axis at an angle α, with 35° ≤ α ≤ 145°, in particular α = 90°.