Motor vehicle position recognizing system
First Claim
1. A motor vehicle position recognizing system, comprising:
- signal zone forming means laid on a road surface at least at one predetermined location for forming a signal zone of a predetermined signal strength;
a plurality of signal strength detecting means mounted on a motor vehicle traveling on said road surface and disposed at a plurality of positions along a transverse direction substantially orthogonal to a traveling direction of said motor vehicle for detecting the signal strength of said signal zone;
vehicle position arithmetic means for arithmetically determining a position of said motor vehicle in a transverse direction as a vehicle position on the basis of the signal strength detected by at least one of said plural signal strength detecting means;
detecting means changeover means for changing over the signal strength detecting means whose output is used for an arithmetic operation for determining said vehicle position in dependence on maneuvering of said motor vehicle; and
vehicle position correcting means for correcting an arithmetically determined value of the position of said motor vehicle as determined arithmetically by said vehicle position arithmetic means in response to the changeover operation of said signal strength detecting means.
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Accused Products
Abstract
A motor vehicle position recognizing system which can ensure high accuracy for an arithmetic processing for determining a vehicle position in a transverse direction of a road by minimizing error involved in the arithmetic processing by suppressing occurrence of discontinuity even when a magnetic sensor whose output is destined for the arithmetic processing is changed over to another one. The system includes magnetic markers (1) laid on a road surface at predetermined locations for forming a magnetic field zone, a plurality of vehicle-onboard magnetic sensors (2) for detecting the intensity of the magnetic field zone formed by the magnetic markers (1), a vehicle position arithmetic means (3A) for arithmetically determining a position (Phr) of the motor vehicle in the transverse direction as a vehicle position on the basis of the field intensities detected by the magnetic sensors (2), and a vehicle position correcting means (6) for correcting an arithmetically determined value of the position of the motor vehicle as determined by the vehicle position arithmetic means (3A).
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Citations
18 Claims
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1. A motor vehicle position recognizing system, comprising:
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signal zone forming means laid on a road surface at least at one predetermined location for forming a signal zone of a predetermined signal strength;
a plurality of signal strength detecting means mounted on a motor vehicle traveling on said road surface and disposed at a plurality of positions along a transverse direction substantially orthogonal to a traveling direction of said motor vehicle for detecting the signal strength of said signal zone;
vehicle position arithmetic means for arithmetically determining a position of said motor vehicle in a transverse direction as a vehicle position on the basis of the signal strength detected by at least one of said plural signal strength detecting means;
detecting means changeover means for changing over the signal strength detecting means whose output is used for an arithmetic operation for determining said vehicle position in dependence on maneuvering of said motor vehicle; and
vehicle position correcting means for correcting an arithmetically determined value of the position of said motor vehicle as determined arithmetically by said vehicle position arithmetic means in response to the changeover operation of said signal strength detecting means. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
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Specification