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AssigneesS.W.A.C. Schmitt-Walter Automation Consult GmbH, Fraunhofer-Gesellschaft zur Foerderung der angewandten Forschung e.V.
InventorsStefan Schmitt-Walter, Lutz Seffner, Thomas Roedig, Sylvia Gebhardt, Bent Brueckner, Andreas Schoenecker
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A pressure sensor has a multiplicity of piezoelectric converter elements which are arranged such that they are essentially parallel to a force-applying or pressure-applying direction. The converter elements can be arranged at a distance from one another by an insulating material and/or are at least partially embedded in the material. A support material having greater mechanical rigidity than the converter elements, in particular in the force-applying or pressure-applying 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 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.
A pressure sensor with a multiplicity of piezoelectric converter elements, which are arranged such that a longitudinal dimension of the piezoelectric converter elements are substantially parallel to a force-applying or pressure-applying direction, and the piezoelectric converter elements are arranged at a distance from one another by an insulating material or are at least partially embedded in said insulating material, wherein the piezoelectric converter elements are electrically contact-connected by an electrical contact-connection, wherein a support material having greater mechanical rigidity in the force-applying or pressure-applying direction than the piezoelectric converter elements is assigned to a plurality of the piezoelectric converter elements, and wherein the support material assigned to the plurality of piezoelectric converter elements extends along at least one side of the plurality of piezoelectric converter elements substantially parallel to the force-applying or pressure-applying direction up to opposite free ends of the plurality of piezoelectric converter elements along the longitudinal dimension, wherein the force or the pressure is applied onto the free ends of the plurality of piezoelectric converter elements.
A pressure sensor with at least one piezoelectric converter element which is electrically contact-contacted by an electrical contact-connection, wherein the at least one piezoelectric converter element is applied, in the form of a layer, to a supporting body made from a support material and the electrical contact-connection is made by a bottom electrode arranged between the layer and the supporting body, and a cover electrode which is applied to an outer side of the layer, wherein the support material has greater mechanical rigidity than the at least one piezoelectric converter element in the force-applying or pressure-applying direction, and wherein the support material extends along at least one side of the at least one piezoelectric converter element substantially parallel to the force-applying or pressure-applying direction up to opposite free ends of the at least one piezoelectric converter element along a longitudinal dimension thereof.
Dependencies are inferred from the claim text.