Motor vehicle position recognizing system

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 depending on a 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,
• wherein said vehicle position correcting means is so designed as to correct the arithmetically determined value of the position of said motor vehicle in response to the changeover operation of said signal strength detecting means so that the arithmetically determined values of the positions of said motor vehicle as determined arithmetically before and after said changeover of said signal strength detecting means, respectively, assume substantially midpoints between arithmetically determined values based on the signal strengths detected by said individual signal strength detecting means before and after the changeover of said signal strength detecting means, respectively.

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 depending on a 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,
• wherein said vehicle position correcting means is so designed as to correct said arithmetically determined value of the position of said motor vehicle so that coincidence is found among said vehicle positions determined on the basis of said detection signal strengths, respectively, when coincidence is detected among detection signal strengths derived from the outputs of said plural signal strength detecting means, respectively.

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 depending on a 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,
• wherein said signal zone forming means is constituted by magnetic markers for generating magnetic fields of a predetermined intensity, and
• wherein said plurality of signal strength detecting means are constituted by a plurality of magnetic sensors for detecting said magnetic field intensities.