METHOD FOR DETECTION OF VEHICLE MOVEMENT DURING WHEEL ALIGNMENT MEASUREMENT
First Claim
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1. A method for detecting rolling movement of a vehicle undergoing a vehicle wheel alignment procedure, comprising:
- acquiring an initial measurement of a rotational position about a horizontal axis of rotation for at least two vehicle wheels;
during a current procedure, acquiring at least one subsequent measurement of said rotational position for each of said at least two vehicle wheels;
comparing each subsequently acquired measurement of said rotational position with a corresponding previously acquired measurement of said rotational position; and
identifying a change in said rotational position for each of said at least two vehicle wheels corresponding to vehicle wheel rotational movement.
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Abstract
A method for use with a vehicle wheel alignment system to detect vehicle roll or elevation change during a vehicle wheel alignment procedure requires the steps of observing individual vehicle wheels, and detecting a substantially simultaneous changes in position or rotational movement associated with each observed wheel. Responsive to detected changes, vehicle rolling movement or a vehicle elevation change is identified, enabling the vehicle wheel alignment system and/or operator to respond accordingly.
26 Citations
87 Claims
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1. A method for detecting rolling movement of a vehicle undergoing a vehicle wheel alignment procedure, comprising:
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acquiring an initial measurement of a rotational position about a horizontal axis of rotation for at least two vehicle wheels;
during a current procedure, acquiring at least one subsequent measurement of said rotational position for each of said at least two vehicle wheels;
comparing each subsequently acquired measurement of said rotational position with a corresponding previously acquired measurement of said rotational position; and
identifying a change in said rotational position for each of said at least two vehicle wheels corresponding to vehicle wheel rotational movement. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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14. An improved vehicle wheel alignment system having a central processor configured with a vehicle wheel alignment software application for processing data received from a plurality of sensors to facilitate at least one vehicle wheel alignment procedure, the improvement comprising:
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the central processor further configured with a vehicle wheel alignment software application for processing data received from the plurality of sensors to detect rolling movement of a vehicle;
wherein said vehicle wheel alignment software application is configured to compare at least two acquired measurements of wheel rotational positions for at least two vehicle wheels; and
wherein said central processor is configured to identify a change in said wheel rotational position for each of said at least two vehicle wheels. - View Dependent Claims (15)
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17. A method for detecting rolling movement of a vehicle undergoing a steered wheel alignment procedure, comprising:
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acquiring an initial measurement of a rotational position for each steerable vehicle wheel;
steering said steerable vehicle wheels from an initial steered position;
returning said steerable vehicle wheel to within a predetermined tolerance of said initial steered position;
acquiring a second measurement of said rotational position for each steerable vehicle wheel;
comparing each second measurement of said rotational position for each steerable vehicle wheel with said initial measurement of said rotational position for each steered vehicle wheel; and
identifying from said comparison, a vehicle steerable wheel rotational movement resulting from said steering movements. - View Dependent Claims (18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28)
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29. A method for detecting the condition of a vehicle brake system and a set of rear wheel slip plates supporting the rear wheels of a vehicle undergoing a steered wheel alignment procedure, comprising:
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acquiring an initial measurement of a rotational position for each vehicle wheel;
steering said steered vehicle wheels from an initial steered position;
returning said steered vehicle wheels to within a predetermined tolerance of said initial steered position;
acquiring a second measurement of said rotational position for each vehicle wheel;
comparing each second measurement of said rotational position for each vehicle wheel with said initial measurement of said rotational position for each vehicle wheel;
responsive to an absence of detected rotational movement in each of said steerable vehicle wheels from said comparison, identifying said vehicle brake system in an unlocked condition;
responsive to detected rotational movement in each of said steered vehicle wheels from said comparison, identifying a rotational direction associated with each of said steered vehicle wheels, and responsive to each of said steered vehicle wheels rotating in the same direction, identifying said vehicle brake system in the unlocked condition;
responsive to each of said steered vehicle wheels rotating in opposite directions, and responsive to detected rotational movement in each of said rear vehicle wheels from said comparison, identifying at least one of said rear wheel slip plates in a locked condition. - View Dependent Claims (30, 31)
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32. A method for detecting a locked/unlocked condition of a vehicle brake system of a vehicle undergoing a steered wheel alignment procedure, comprising:
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acquiring an initial measurement of a rotational position for each steerable vehicle wheel;
steering said steered vehicle wheels from an initial steered position;
returning said steered vehicle wheels to within a predetermined tolerance of said initial steered position acquiring a second measurement of said rotational position for each steerable vehicle wheel;
comparing said initial measurements with said second measurements for each steerable vehicle wheel to detect rotational movement; and
evaluating a direction of rotation for each of said steered wheels to identify a vehicle brake system locked/unlocked condition. - View Dependent Claims (33, 34, 35)
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36. A method for detecting a locked/unlocked condition of a set of rear wheel slip plates supporting the rear wheels of a vehicle undergoing an alignment procedure, comprising:
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acquiring an initial measurement of a rotational position for at least each rear vehicle wheel;
steering said steered vehicle wheels from an initial steered position;
returning said steered vehicle wheels to within a predetermined tolerance of said initial steered position acquiring a second measurement of said rotational position for at least each rear vehicle wheel;
comparing each second measurement with said initial measurement; and
responsive to detected rotational movement in each of said rear vehicle wheels from said comparison, identifying at least one of said rear wheel slip plates in a locked condition. - View Dependent Claims (37, 38, 39)
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40. An improved vehicle wheel alignment system having a central processor configured with a vehicle wheel alignment software application for processing data received from a plurality of sensors to facilitate at least one vehicle wheel alignment procedure, the improvement comprising:
- the central processor further configured with a vehicle wheel alignment software application for processing data received from the plurality of sensors to detect a condition of a vehicle brake system and a condition of a set of rear wheel slip plates supporting the rear wheels of a vehicle undergoing a steered wheel alignment procedure.
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41. An improved vehicle wheel alignment system having a central processor configured with a vehicle wheel alignment software application for processing data received from a plurality of sensors to facilitate at least one vehicle wheel alignment procedure, the improvement comprising:
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said central processor configured to compare at least two acquired measurements of steered wheel rotational positions for each of at least two steered vehicle wheels; and
wherein said central processor is further configured to respond to a change in said steered wheel rotational positions by evaluating a direction of rotation for each of said steered wheels to identify a vehicle brake system state.
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42. An improved vehicle wheel alignment system having a central processor configured with a vehicle wheel alignment software application for processing data received from a plurality of sensors to facilitate at least one vehicle wheel alignment procedure, the improvement comprising:
- the central processor further configured with a vehicle wheel alignment software application for processing data received from the plurality of sensors to detect a condition of a set of rear wheel slip plates supporting the rear wheels of a vehicle undergoing a steered wheel alignment procedure.
- View Dependent Claims (43)
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44. A method for detecting an elevation change of a common axle of a vehicle during a vehicle wheel alignment procedure, comprising:
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acquiring an initial set of measurements representative of spatial positions of vehicle wheels on opposite ends of the common axle;
during a current procedure, acquiring at least one subsequent set of measurement of said spatial positions for said vehicle wheels;
comparing each subsequently acquired set of measurements with said initial set of measurements of said spatial positions; and
determining a change in vertical position for each of said vehicle wheels from said comparisons. - View Dependent Claims (45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56)
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57. An improved vehicle wheel alignment system having a central processor configured with a vehicle wheel alignment software application for processing data received from a plurality of sensors to facilitate at least one vehicle wheel alignment procedure, the improvement comprising:
- the central processor further configured with a vehicle wheel alignment software application for processing data received from the plurality of sensors to detect an elevation change of at least one common axle of a vehicle during a vehicle wheel alignment procedure.
- View Dependent Claims (58, 59, 60, 61)
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62. A method for detecting elevation changes associated with a vehicle having a set of vehicle wheels during a vehicle wheel alignment procedure, comprising:
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establishing an initial reference plane associated with the initial spatial positions of the vehicle wheels;
subsequently determining at least one current reference plane associated with the current spatial positions of the vehicle wheels during a current procedure;
comparing said current reference plane with said initial reference plane to detect a change in longitudinal orientation of said current reference plane from said initial reference plane; and
identifying an elevation change associated with a common axle of the vehicle. - View Dependent Claims (63, 64, 65, 69, 70, 71, 72, 73, 74, 75, 76, 77, 78, 79, 80, 81)
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66. A method for detecting elevation chances associated with a vehicle having a set of vehicle wheels during a vehicle wheel alignment procedure, comprising:
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establishing an initial reference plane associated with the initial spatial positions of the vehicle wheels;
subsequently determining at least one current reference plane associated with the current spatial positions of the vehicle wheels during a current procedure;
comparing said current reference plane with said initial reference plane to detect a change in longitudinal orientation of said current reference plane from said initial reference plane;
identifying an elevation chance associated with a common axle of the vehicle;
comparing said current reference plane with said initial reference plane to detect a substantially uniform elevation change between said current reference plane and said initial reference plane; and
responsive to a detected substantially uniform elevation change between said current reference plane from said initial reference plane, identifying the elevation change associated with the vehicle. - View Dependent Claims (67, 68)
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82. An improved vehicle wheel alignment system having a central processor configured with a vehicle wheel alignment software application for processing data received from a plurality of sensors to facilitate at least one vehicle wheel alignment procedure, the improvement comprising:
- the central processor further configured with a vehicle wheel alignment software application for processing data received from the plurality of sensors to detect rolling movement of a vehicle concurrent with an elevation change of at least one common axle of said vehicle during said vehicle wheel alignment procedure.
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83. A method for detecting a locked/unlocked condition of a set of rear wheel slip plates supporting the rear wheels of a vehicle undergoing an alignment procedure, comprising:
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acquiring an initial measurement of a position for at least each rear vehicle wheel;
steering said steered vehicle wheels from an initial steered position;
returning said steered vehicle wheels to within a predetermined tolerance of said initial steered position acquiring a second measurement of said position for at least each rear vehicle wheel;
comparing each second measurement with said initial measurement; and
responsive to an absence of detected translational movement in each of said rear vehicle wheels from said comparison, identifying at least one of said rear wheel slip plates in a locked condition. - View Dependent Claims (84, 85, 86)
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87. A method for detecting a locked/unlocked condition of a set of rear wheel slip plates supporting the rear wheels of a vehicle undergoing an alignment procedure, comprising:
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acquiring an initial measurement of a position for at least each rear vehicle wheel;
steering said steered vehicle wheels from an initial steered position;
returning said steered vehicle wheels to within a predetermined tolerance of said initial steered position acquiring a second measurement of said position for at least each rear vehicle wheel;
comparing each second measurement with said initial measurement; and
responsive to an absence of detected translational movement in each of said rear vehicle wheels from said comparison, providing an indication to an operator.
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Specification