Tire rotation detection using tire temperature profiling
First Claim
1. A method for detecting a tire rotation event for a first front tire and a second front tire of a vehicle and a first rear tire and a second rear tire of the vehicle, comprising:
- measuring a first temperature of the first front tire, a first temperature of the second front tire, a first temperature of the first rear tire, and a first temperature of the second rear tire;
determining a first front average temperature (FAT) based on said first temperature of the first front tire and said first temperature of the second front tire;
determining a first rear average temperature (RAT) based on said first temperature of the first rear tire and said first temperature of the second rear tire;
calculating a first ratio of said first FAT to said first RAT;
measuring a second temperature of the first front tire, a second temperature of the second front tire, a second temperature of the first rear tire, and a second temperature of the second rear tire;
determining a second FAT based on said second temperature of the first front tire and said second temperature of the second front tire after said determining said first FAT;
determining a second RAT based on said second temperature of the first rear tire and said second temperature of the second rear tire after said determining said first RAT;
calculating a second ratio of said second FAT to said second RAT;
identifying the tire rotation event based at least in part upon a comparison of said first ratio and said second ratio.
12 Assignments
0 Petitions
Accused Products
Abstract
Methods and apparatus are provided for detecting whether a tire rotation event or tire inflation even has occurred on a vehicle. The method comprises determining a first front average temperature (FAT) of a first front tire and a second front tire, determining a first rear average temperature (RAT) of a first rear tire and a second rear tire, and calculating a first ratio of the first FAT to the first RAT. The method further comprise determining a second FAT of the first front tire and the second front tire after determining the first FAT, determining a second RAT of the first rear tire and the second rear tire after determining the first RAT, calculating a second ratio of the second FAT to the second RAT, and identifying the tire rotation event based at least in part upon a comparison of the first ratio and the second ratio.
21 Citations
11 Claims
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1. A method for detecting a tire rotation event for a first front tire and a second front tire of a vehicle and a first rear tire and a second rear tire of the vehicle, comprising:
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measuring a first temperature of the first front tire, a first temperature of the second front tire, a first temperature of the first rear tire, and a first temperature of the second rear tire; determining a first front average temperature (FAT) based on said first temperature of the first front tire and said first temperature of the second front tire; determining a first rear average temperature (RAT) based on said first temperature of the first rear tire and said first temperature of the second rear tire; calculating a first ratio of said first FAT to said first RAT; measuring a second temperature of the first front tire, a second temperature of the second front tire, a second temperature of the first rear tire, and a second temperature of the second rear tire; determining a second FAT based on said second temperature of the first front tire and said second temperature of the second front tire after said determining said first FAT; determining a second RAT based on said second temperature of the first rear tire and said second temperature of the second rear tire after said determining said first RAT; calculating a second ratio of said second FAT to said second RAT; identifying the tire rotation event based at least in part upon a comparison of said first ratio and said second ratio. - View Dependent Claims (2, 3, 4)
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5. A system configured to detect a tire rotation event for a first front tire and a second front tire of a vehicle and a first rear tire and a second rear tire of the vehicle, comprising:
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a first sensor disposed to measure at least one of a first temperature of the first front tire, a second temperature of the second front tire, a third temperature of the first rear tire, and fourth temperature of the second rear tire; and a processor coupled to said first sensor, said processor configured to; determine a first front average temperature (FAT) with said first temperature and said second temperature; determine a first rear average temperature (RAT) with said third temperature and said fourth temperature; calculate a first ratio of said first FAT to said first RAT; determine a second FAT with said first temperature and said second temperature after said determining said first FAT; determine a second RAT with said third temperature and said fourth temperature after said determining said first RAT; calculate a second ratio of said second FAT to said second RAT; identify the tire rotation event based at least in part upon a comparison of said first ratio and said second ratio. - View Dependent Claims (6, 7, 8, 9, 10, 11)
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Specification