Patent ID: 7726207

Claim:
A generally flexible pressure sensing mat, comprising a first carrier foil and a second carrier foil arranged at a certain distance from each other by means of a spacer, a plurality of cells, each cell being defined by a respective opening of said spacer, at least two electrodes arranged in each cell between said first and second carrier foils, wherein, in response to a pressure acting on the pressure sensing mat at a cell, the first and second carrier foils are pressed together, thereby causing variation of an electrical resistance between the at least two electrodes of said cell, wherein said pressure sensing mat further comprises at least one rigidifying element, said least one rigidifying element being arranged substantially concentrically with a cell in such a way as to locally reduce flexibility of said pressure sensing mat at said cell, the diameter of said rigidifying element exceeding the diameter of said cell by between 5 and 50%.