Patent ID: 6950031

Claim:
A device for detecting and evaluating weight exerted by a person sitting on a vehicle seat, the device comprising at least three load cells, said load cells being non-linearly disposed and spaced apart and disposed on said load-carrying parts of the vehicle seat, said load cells each generating a weighing signal corresponding to the weight; and an electronic evaluation circuit, adapted to receive and preprocess the weighing signals of the load cells and generate an output signal based on the weighing signals, the evaluation circuit comprising an evaluation function with which a localization of the center of gravity of the weight acting on the vehicle seat can be carried out from the individual weighing signals of the at least three load cells, and the evaluation circuit comprising a correction function, with which force bypasses can be taken into account in the forming of the output signal, the evaluation circuit comprising a function for automatic zero-drift correction of the weighing signal, the function for the automatic drift correction comprising a discriminator for differentiating drift in the weighing-signal from low loads of a limited time; and the evaluation circuit comprising a function for a long term recording mode, wherein the evaluation circuit includes a data memory for storing over a predetermined sliding time period weighing signals, output signals and/or other signals and, in addition, records in an associated memory area of the data memory time signals correlating to the weighing signals, output signals and/or other signals.