Magnetic apparatus for detecting position of vehicle
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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-
Jan 1, 2002
Grant Date -
N/A
app pub date -
Mar 28, 2000
filing date -
Sep 29, 1997
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A magnetic apparatus for detecting a position of a vehicle, capable of detecting a lateral deviating distance of a vehicle over a lateral deviation width with a high accuracy and at a high speed, wherein a magnetic field component in the direction of advance of the vehicle is detected; or more preferably a three dimensional magnetic sensor (1), which comprises a magnetic sensor element for the direction of advance of the vehicle, and magnetic sensor elements for two directions crossing the first-mentioned direction and provided additionally, is used, whereby it becomes possible to heighten a center retaining capability of the vehicle, widen a lateral deviating distance detecting range around four times from around 25 cm to around 1 m, and detect a magnetic marker (3) reliably even when disturbance magnetic field exerts influence upon this detection operation to thereby start center side guidance reliably.
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