Measuring arrangement for determining the distance to a magnetic alternating field source and method for measuring the distance between a magnetic sensor arrangement and a magnetic alternating field source

摘要

The measuring arrangement (6) is provided with a magnetic sensor arrangement (8), by which a characteristic magnetic alternating field signal of the magnetic alternating field source (7) is detected, and an evaluation device (12). The magnetic sensor arrangement comprises two magnetic field sensors (9,10) in a fixed distance (B) to each other on an movement axis (X). The evaluation device comprises a control unit (15). The evaluation device has a demodulation stage (16), by which the low-frequency useful signal is recovered from the transmitting signal. An independent claim is included for a method for the measurement of distance between a magnetic sensor arrangement and a magnetic alternating field source.