Patent ID: 8188756
Filing Date: 2012-05-29
Classification: B60R,G01L

Abstract:
1. Method for determining an electrical resistance of an electrical supply lead to sensor elements, in which the sensor elements are interconnected to form a sensor arrangement and in which: an overall electrical resistance of the supply lead to the sensor elements is determined by measurement, in which case the overall electrical resistance includes both an electrical resistance of an electrical line to the sensor elements and also an electrical resistance of an electronic component which is arranged in a current path specified by the electrical line; the overall electrical resistance of the supply lead to the sensor elements is compared to a reference value, in which case the reference value is a value of an overall electrical resistance of a reference component of the sensor arrangement and its electrical line; the reference value is determined through measurement; the overall electrical resistance of the supply lead to the sensor elements is compared with a further reference value; the further reference value is a value of an overall electrical resistance of a further reference component of the sensor arrangement and its electrical line; the further reference value is determined through measurement; the further reference value represents an upper permitted limit value of the overall electrical resistance of the supply lead to the sensor elements; the sensor elements are arranged as a matrix of rows and columns; each row and each column includes an electrical supply lead connected to its sensor elements; and the overall resistance of the supply lead of each row and column is determined individually by measurement.