Method for allocating identifiers of wheel electronics of a tire pressure monitoring system of a vehicle to the positions of the wheels on the vehicle
First Claim
1. A method for determining the relative position of a wheel of a vehicle having an installed sensing unit for a tire pressure monitoring system, comprising:
- providing a plurality of sensing units each comprising a pressure sensor and a motion sensor both connected to a transmitter;
providing a single receiver connected to an evaluation device disposed anywhere within the vehicle, the single receiver not dependent upon a signal strength or a specific location in the vehicle;
attaching a sensing unit from the plurality of sensing units inside each wheel of the vehicle in an identical orientation with respect to the wheel;
transmitting data on a repeatable basis from the transmitter of each sensing unit, the data comprising a pressure reading data, a rotational speed data, a rotational direction data and an identifier;
receiving the data by the receiver of the evaluation device;
determining via the evaluation device whether each sensing unit is located on a right side position or a left side position of the vehicle from the rotational direction data;
calculating via the evaluation device a distance traveled during a time period of less than 2 seconds of each wheel from the rotational speed data; and
determining via the evaluation device whether each sensing unit is located in a front wheel position or a rear wheel position by comparing the distance traveled of each left side sensing unit and each right side sensing unit during the time period by recognizing the front wheel travels at least a threshold value multiple or threshold percentage further as compared to the rear wheel when the vehicle is traveling around a corner, wherein the threshold value multiple comprises 1.004 or the threshold percentage comprises 0.4 percent; and
allocating via the evaluation device a final position of each wheel to the identifier of each sensing unit from the plurality of sensing units.
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Accused Products
Abstract
The invention describes a method for allocating identifiers of wheel electronics of a tire pressure monitoring system to positions of wheels of a vehicle, the simultaneously occurring rotation speeds of the wheels, normalized on a consistently chosen rolling radius of the wheels differ during cornering because of the different positions of the wheels on the vehicle, so that the positions of the wheels can be sorted according to increasing speed of the wheels during cornering, the wheel electronics of each wheel comprising a pressure sensor, a motion sensor, a memory and a transmitter, which transmits signals to a receiver being connected to an evaluation device, which receives the transmitted identifiers and compares the distances which the corresponding wheels have traveled in a defined time span, sorts the identifiers according to the length of the distance traveled in the defined time span and allocates the identifiers to the wheel positions.
17 Citations
19 Claims
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1. A method for determining the relative position of a wheel of a vehicle having an installed sensing unit for a tire pressure monitoring system, comprising:
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providing a plurality of sensing units each comprising a pressure sensor and a motion sensor both connected to a transmitter; providing a single receiver connected to an evaluation device disposed anywhere within the vehicle, the single receiver not dependent upon a signal strength or a specific location in the vehicle; attaching a sensing unit from the plurality of sensing units inside each wheel of the vehicle in an identical orientation with respect to the wheel; transmitting data on a repeatable basis from the transmitter of each sensing unit, the data comprising a pressure reading data, a rotational speed data, a rotational direction data and an identifier; receiving the data by the receiver of the evaluation device; determining via the evaluation device whether each sensing unit is located on a right side position or a left side position of the vehicle from the rotational direction data; calculating via the evaluation device a distance traveled during a time period of less than 2 seconds of each wheel from the rotational speed data; and determining via the evaluation device whether each sensing unit is located in a front wheel position or a rear wheel position by comparing the distance traveled of each left side sensing unit and each right side sensing unit during the time period by recognizing the front wheel travels at least a threshold value multiple or threshold percentage further as compared to the rear wheel when the vehicle is traveling around a corner, wherein the threshold value multiple comprises 1.004 or the threshold percentage comprises 0.4 percent; and allocating via the evaluation device a final position of each wheel to the identifier of each sensing unit from the plurality of sensing units. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. A method for determining the relative position of a wheel of a vehicle having an installed sensing unit for a tire pressure monitoring system, comprising:
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providing a plurality of sensing units each comprising a pressure sensor and a motion sensor both connected to a transmitter; providing a single receiver connected to an evaluation device disposed anywhere within the vehicle, the single receiver not dependent upon a signal strength or a specific location in the vehicle; attaching a sensing unit from the plurality of sensing units inside each wheel of the vehicle in an identical orientation with respect to the wheel; transmitting data on a repeatable basis from the transmitter of each sensing unit, the data comprising a pressure reading data, a rotational speed data, a rotational direction data and an identifier; receiving the data by the receiver of the evaluation device; determining via the evaluation device whether each sensing unit is located on a right side position or a left side position of the vehicle from the rotational direction data; calculating via the evaluation device a number of rotations during a time period of less than 2 seconds of each wheel from the rotational speed data; and determining via the evaluation device whether each sensing unit is located in a front wheel position or a rear wheel position by comparing the number of rotations of each left side sensing unit and each right side sensing unit during the time period by recognizing the front wheel rotates at least a threshold value multiple or threshold percentage further as compared to the rear wheel when the vehicle is traveling around a corner, wherein the threshold value multiple comprises 1.004 or the threshold percentage comprises 0.4 percent; and allocating via the evaluation device a final position of each wheel to the identifier of each sensing unit from the plurality of sensing units. - View Dependent Claims (16, 17)
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18. A method for determining the relative position of a wheel of a vehicle having an installed sensing unit for a tire pressure monitoring system, comprising:
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providing a plurality of sensing units each comprising a pressure sensor and a motion sensor both connected to a transmitter; providing a single receiver connected to an evaluation device disposed anywhere within the vehicle, the single receiver not dependent upon a signal strength or a specific location in the vehicle; attaching a sensing unit from the plurality of sensing units inside each wheel of the vehicle in an identical orientation with respect to the wheel; transmitting data on a repeatable basis from the transmitter of each sensing unit, the data comprising a pressure reading data, a rotational speed data and an identifier; receiving the data by the receiver of the evaluation device; calculating via the evaluation device a distance traveled during a time period of less than 2 seconds of each wheel from the rotational speed data; and determining via the evaluation device when the vehicle is traveling around a corner whether each sensing unit is located in a front left wheel position, a front right wheel position, a left rear wheel position or a right rear wheel position by comparing the distance traveled of each sensing unit during the time period by recognizing a rear wheel closest to the corner travels a shortest distance, a front wheel closest to the corner travels a threshold value multiple or threshold percentage distance further than the shortest distance, a rear wheel away from the corner travels a threshold value multiple or threshold percentage distance further than the front wheel closest to the corner and a front wheel away from the corner travels the furthest distance, wherein the threshold value multiple comprises 1.004 or the threshold percentage comprises 0.4 percent; and allocating via the evaluation device a final position of each wheel to the identifier of each sensing unit from the plurality of sensing units.
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19. A method for determining the relative position of a wheel of a vehicle having an installed sensing unit for a tire pressure monitoring system, comprising:
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providing a plurality of sensing units each comprising a pressure sensor and a motion sensor both connected to a transmitter; providing a single receiver connected to an evaluation device disposed anywhere within the vehicle, the single receiver not dependent upon a signal strength or a specific location in the vehicle; attaching a sensing unit from the plurality of sensing units inside each wheel of the vehicle in an identical orientation with respect to the wheel; transmitting data on a repeatable basis from the transmitter of each sensing unit, the data comprising a pressure reading data, a rotational speed data and an identifier; receiving the data by the receiver of the evaluation device; calculating via the evaluation device a number of rotations during a time period of less than 2 seconds of each wheel from the rotational speed data; and determining via the evaluation device when the vehicle is traveling around a corner whether each sensing unit is located in a front left wheel position, a front right wheel position, a left rear wheel position or a right rear wheel position by comparing the number of rotations of each sensing unit during the time period by recognizing a rear wheel closest to the corner rotates the least amount of rotations, a front wheel closest to the corner rotates a threshold value multiple or threshold percentage more than the least amount of rotations, a rear wheel away from the corner rotates a threshold value multiple or threshold percentage more than the front wheel closest to the corner and a front wheel away from the corner rotates the most amount of rotations, wherein the threshold value multiple comprises 1.004 or the threshold percentage comprises 0.4 percent; and allocating via the evaluation device a final position of each wheel to the identifier of each sensing unit from the plurality of sensing units.
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Specification