Patent ID: 7245121
Filing Date: 2007-07-17
Classification: G01D

Abstract:
1. Device for determining the position of a metallic target, with at least two detection devices which are so positioned along a path to be monitored such that a sensitivity curve of immediately adjacent detection devices at least partly overlap, the detection devices having in each case at least one inductance coil and at least one oscillator and, as a function of a distance of the target from the detection device, supply a distance signal, with at least one converting device operatively connected to the detection devices for converting the distance signals detected by the detection devices into analogue signals, and with at least one evaluating device operatively connected to the at least one converting device for determining and reading out a local position of the target from analogue signals going back to the particular detection devices, a damping signal of the oscillator being in each case outputtable by the detection devices as the distance signal, wherein a damping curve of the detection device in each case has partial areas with high positional resolution, wherein the detection devices are so positioned that from the partial areas of high positional resolution of the individual detection devices a detection curve for the entire path to be monitored is composed and wherein the detection devices are arranged in two parallel rows in mutually displaced manner for increasing the positional resolution.