Hybrid tire pressure monitoring system
First Claim
Patent Images
1. A tire pressure monitoring system for a vehicle that rides on N tires during use, comprising:
- N rotation sensors that generate N rotation signals based on rotation of respective ones of said N tires;
M pressure sensors that are associated with M of said N tires and that generate pressure signals based on pressure within respective ones of said M of said N tires; and
a control module that receives said N rotation signals from said N tires and said M pressure signals from said M of said N tires and that monitors a pressure condition in at least one tire other than said M of said N tires based thereon;
wherein said control module determines a first distance one of said N tires has traveled based on said rotation signal associated with said one of said N tires, determines a second distance another of said N tires has traveled based on said rotation signal associated with said another of said N tires and monitors said pressure condition based on said first distance and said second distance.
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Abstract
A tire pressure monitoring system for a vehicle having a plurality of inflatable tires includes a plurality of rotation sensors that generate rotation signals based on a rotation of each of the tires and a pressure sensor that is responsive to a pressure within one of the tires and that generates a pressure signal based on the pressure. A control module receives the pulse signals and the pressure signal and that detects a low pressure condition of at least one of the tires based on the pressure signal and the pulse signals.
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Citations
62 Claims
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1. A tire pressure monitoring system for a vehicle that rides on N tires during use, comprising:
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N rotation sensors that generate N rotation signals based on rotation of respective ones of said N tires; M pressure sensors that are associated with M of said N tires and that generate pressure signals based on pressure within respective ones of said M of said N tires; and a control module that receives said N rotation signals from said N tires and said M pressure signals from said M of said N tires and that monitors a pressure condition in at least one tire other than said M of said N tires based thereon;
wherein said control module determines a first distance one of said N tires has traveled based on said rotation signal associated with said one of said N tires, determines a second distance another of said N tires has traveled based on said rotation signal associated with said another of said N tires and monitors said pressure condition based on said first distance and said second distance. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A tire pressure monitoring system for a vehicle having a plurality of inflatable tires, comprising:
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a plurality of rotation sensors that generate rotation signals based on a rotation of each of said tires; a pressure sensor that is responsive to a pressure within one of said tires and generates a pressure signal based on said pressure; and a control module that receives said rotation signals and said pressure signal, and that detects a low pressure condition of at least one of said tires based on said rotation signals and said pressure signal, wherein said control module determines a first distance one of said tires has traveled based on said rotation signal associated with said one of said tires, determines a second distance another of said tires has traveled based on said rotation signal associated with said another of said tires and detects said low pressure condition based on said first distance and said second distance. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20, 21, 22)
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23. A tire pressure monitoring system for a vehicle having a plurality of inflatable tires, comprising:
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a plurality of rotation sensors that generate rotation signals based on a rotation of each of said tires; a pressure sensor that is responsive to a pressure within one of said tires and generates a pressure signal based on said pressure; and a control module that receives said rotation signals and said pressure signal, that characterizes a tire pressure monitoring baseline based on said rotation signals and said pressure signal and that detects a low pressure condition of at least one of said tires based on said baseline and said rotation signals, wherein said control module determines a first distance one of said tires has traveled based on said rotation signal associated with said one of said tires, determines a second distance another of said tires has traveled based on said rotation signal associated with said another of said tires and detects said low pressure condition based on said first distance and said second distance. - View Dependent Claims (24, 25, 26, 27, 28, 29, 30, 31)
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32. A method of detecting a low pressure condition in one of a plurality of tires of a vehicle, comprising:
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generating rotation signals based on a rotation of each of said tires; generating a pressure signal from a pressure sensor based on a pressure within one of said tires; detecting said low pressure condition based on said rotation signals and said pressure signal determining a first distance one of said tires has traveled based on said rotation signal associated with said one of said tires; determining a second distance another of said tires has traveled based on said rotation signal associated with said another of said tires; and detecting said low pressure condition based on said first distance and said second distance, and operating a signal to advise of said low pressure condition. - View Dependent Claims (33, 34, 35, 36, 37, 38, 39, 40, 41, 42)
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43. A method of detecting a low pressure condition in one of a plurality of tires of a vehicle, comprising:
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generating rotation signals based on a rotation of each of said tires; generating a pressure signal based on a pressure within one of said tires; initiating a primary characterization routine based on said pressure signal to define a tire pressure monitoring baseline; initiating a secondary characterization routine upon completion of said primary characterization routine to further define said baseline; and detecting said low pressure condition of at least one of said tires based on said baseline and said pulse signals determining a first distance one of said tires has traveled based on said pulse signal associated with said one of said tires; determining a second distance another of said tires has traveled based on said pulse signal associated with said another of said tires; and detecting said low pressure condition based on said first distance and said second distance, and; operating a signal to advise of said low pressure condition. - View Dependent Claims (44, 45, 46, 47, 48, 49, 50, 51)
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52. A tire pressure monitoring system for a vehicle having a plurality of inflatable tires, comprising:
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a plurality of pulse generating sensors that generate pulse signals based on a rotation of each of said tires; a pressure sensor that is responsive to a pressure within one of said tires and generates a pressure signal based on said pressure; and a control module that receives said pulse signals and said pressure signal, that executes a primary characterization routine to define a first baseline based on said pulse signals and said pressure signal, that executes a secondary characterization routine upon completion of said primary characterization routine to define a second baseline based on said pulse signals and that detects a low pressure condition of at least one of said tires based on one of said first and second baselines and said pulse signals. - View Dependent Claims (53, 54, 55, 56, 57, 58, 59, 60, 61, 62)
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Specification