Sensor for measuring relative movement between a vehicle and a track by sensing magnetic field distortions
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United States of America Patent
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-
Sep 9, 1986
Grant Date -
N/A
app pub date -
Oct 24, 1983
filing date -
Nov 2, 1982
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
Magnetic field distortions are sensed by a magnetic sensor including a magnetic field sensor or receiver arranged for cooperation with a magnetic transmitter which generates the magnetic field for providing measured values representing such distortions. The magnetic receiver has a preferred directional axis in which the receiver is sensitive. The receiver is so arranged or located that the undistorted magnetic field lines of the magnetic field produced by the magnetic transmitter extend approximately perpendicularly to the preferred directional axis of the magnetic receiver. By locating the receiver in this specific position it is possible to substantially increase the sensitivity of such sensors and hence their sensing range for example in measuring the spacing between a magnetically levitated vehicle and a rail surface relative to which the vehicle is travelling.
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