MOVEMENT RANGE FOR A MOBILE OBJECT AND EVALUATION APPARATUS FOR DETERMINING A POSITION OF A MOBILE OBJECT
First Claim
1. Movement range for a mobile object (11), whose position is to be detected with respect to a surface (19) in the movement range, wherein themovement range has a ground (21) and the surface intersects the ground along an intersecting line (20), comprising the following features:
- a first elongate magnetic field generating object (14), arranged at a first distance (d1) from the intersecting line on a first side of the intersecting line in or on the ground;
a second elongate magnetic field generating object (15) arranged at a second distance (d2) from the intersecting line (20) in or on the ground (21);
wherein the first magnetic field generating object and the second magnetic field generating object are adapted to generate a magnetic field decreasing with a radially increasing distance with respect to the magnetic field generating object; and
a generator (16) for controlling the first magnetic field generating object and the second magnetic field generating object with a current and a multiplex mode.
1 Assignment
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Accused Products
Abstract
In order to determine a position of a mobile object relative to a surface within a movement range that comprises a ground which the surface intersects along a line of intersection, a magnetic field of a first elongate magnetic field-generating object which is located at a first distance from the line of intersection is measured, and a magnetic field of a second elongate magnetic field-generating object that is located in or on the ground, at a second distance on another side of the line of intersection, is measured. Based on a comparison between the measured magnetic fields, it is determined whether the mobile object is located in front of or behind the surface. A generator that triggers the magnetic field-generating objects in a multiplex mode is provided for distinguishing which magnetic field-generating object generates which magnetic field. The magnetic field-generating objects can comprise forward conductors of a conductor loop, oppositely wound coils, or forward/return conductor combinations having a magnetically shielded return conductor.
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Citations
35 Claims
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1. Movement range for a mobile object (11), whose position is to be detected with respect to a surface (19) in the movement range, wherein the
movement range has a ground (21) and the surface intersects the ground along an intersecting line (20), comprising the following features: -
a first elongate magnetic field generating object (14), arranged at a first distance (d1) from the intersecting line on a first side of the intersecting line in or on the ground; a second elongate magnetic field generating object (15) arranged at a second distance (d2) from the intersecting line (20) in or on the ground (21); wherein the first magnetic field generating object and the second magnetic field generating object are adapted to generate a magnetic field decreasing with a radially increasing distance with respect to the magnetic field generating object; and a generator (16) for controlling the first magnetic field generating object and the second magnetic field generating object with a current and a multiplex mode. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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17. Evaluation device for detecting a position of a mobile object (11) with respect to a surface in an movement range, wherein the movement range (5) has a ground (21) and the surface (19) intersects the ground, comprising the following features:
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a means (7, 8, 5) for supplying a first magnetic field caused by a first magnetic field generating object and a second magnetic field caused by a second magnetic field generating object, wherein the first and the second magnetic field generating objects (14, 15) are arranged at a first distance (d1) or a second distance (d2) from the intersecting line (20) on different sides in or on the ground (21); and a computer means (65) for determining whether the mobile object is or was located in front or behind of the surface based on a comparison (60, 61) of the first magnetic field (B1) with the second magnetic field (B2). - View Dependent Claims (18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30)
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31. Evaluation device for detecting a position of a mobile object with respect to a surface in a movement range, wherein the movement range comprises a ground (21) and the surface intersects the ground along an intersecting line (20), comprising the following features:
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a plausibility analyzation means (66) for verifying whether a result generated by a position detection means is plausible by using a result measured during an earlier time interval and by using a prior knowledge about valid or invalid trajectories of the mobile object (11).
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32. Method of operating a movement range for a mobile object (11), whose position must be detected with respect to a surface (19) in the movement range, wherein the movement range comprises a ground (21) and the surface intersects the ground along an intersecting line (20), comprising the following steps:
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generating a first magnetic field by a first elongate magnetic field generating object (14) arranged at a first distance (d1) from the intersecting line on a first side of the intersecting line in or on the ground; generating a first magnetic field by a second elongate magnetic field object (15) arranged at a second distance (d2) from the intersecting line (20) in or on the ground (21); wherein the first magnetic field generating object and the second magnetic field generating object are adapted to generate a magnetic field radially decreasing with respect to the magnetic field generating object at an increasing distance; and controlling (16) the first magnetic field generating object and the second magnetic field generating object by a current and a multiplex mode. - View Dependent Claims (35)
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33. Method of detecting a position of a mobile object (11) with respect to a surface in a movement range, wherein the movement range (5) has a ground (21) and the surface (19) intersects the ground, comprising the following steps:
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supplying (7,8,5) a first magnetic field based on a first magnetic field generating object, and a second magnetic field based on a second magnetic field generating object, wherein the first and the second magnetic field generating object (14, 15) are arranged at a first distance (d1) or a second distance (d2) from the intersecting line (20) on different sides in or on the ground (20); and detecting (65) whether the mobile object is or was located in front of or behind the surface on the basis of a comparison (60, 61) of the first magnetic field (B1) with the second magnetic field (B2).
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34. Method of detecting a position of a mobile object with respect to a surface in the movement range, wherein the movement range comprises a ground (21) and the surface intersects the ground along an intersecting line (20), comprising the following steps:
verifying (66) whether a result detected by a position detection means is plausible by using a result measure during an earlier time interval and by using a prior knowledge about valid and invalid trajectories of the mobile object (11).
Specification