Parking aid with a wheel sensor
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United States of America Patent
Stats
-
Feb 11, 1997
Grant Date -
N/A
app pub date -
May 19, 1995
filing date -
Sep 30, 1993
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A circuit arrangement determines a distance of a motor vehicle from an obstacle in a near range by a displacement sensor instead of an ultrasonic measurement. The distance is determined, above a predetermined limiting value, in accordance with the known ultrasonic transit time measurement. In this range, by comparing the signals of the displacement sensor with the ultrasonic measurement a calibration can be carried out and a correction factor for the displacement sensor can be formed. The correction factor is taken into account during the measurement in the near range, as is the contour of the vehicle.
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