US6731205B2
Expired / Lapsed
US
⏱️ 0.0 years remaining
Self training tire pressure monitoring system
Assignee: Magna Donnelly Corp
•
Filing: 2002-07-26
•
Granted: 2004-05-04
•
Expires: 2022-07-26
Abstract
Abstract A self training tire pressure monitoring system for a vehicle includes at least two pressure sensors, at least two wheel sensors and a control. The pressure sensors are positioned at respective tires and are operable to provide a measured pressure output indicative of the pressure of the respective tires. The wheel sensors are positioned at respective wheels of the vehicle and are operable to provide a characteristic output indicative of rotation of the wheels over a period of time. The control receives the characteristic outputs and the measured pressure outputs and is operable to integrate the outputs to determine the particular wheels at which the pressure sensors and associated tires are positioned. The measured pressure and location of the tires may be displayed at a display of the vehicle. Preferably, the control deduces a deduced rolling radius of the tires in response to the characteristic output of the wheel sensors.
Inventors
- 👤 Kenneth Schofield
- 👤 Niall R. Lynam
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 16:12
CPC Classifications
B; B60; B60C; B60C23/00; B60C23/02; B60C23/04; B60C23/0408; B60C23/0415; B60C23/0416; B60C23/06; B60C23/061
Claims Analysis
Total Claims: 58
Claim 1
Independent Claim
244 words
A self training tire pressure monitoring system for a vehicle having a set of tires, each of the tires being mounted at respective ones of a set of wheels of the vehicle, said self training tire pressure monitoring system comprising: first and second pressure sensors, said first and second pressure sensors being positioned at respective tires of at least two tires of the vehicle, said first and second pressure sensors being operable to provide measured pressure outputs indicative of the actual pressure of the respective tires; first and second wheel sensors positioned at respective ones of at least two wheels of the vehicle, the at least two tires being mounted on respective wheels of the at least two wheels, said first and second wheel sensors being operable to provide characteristic outputs indicative of rotation of the respective wheels; a control receiving said characteristic outputs and said measured pressure outputs, said control being operable to deduce a deduced characteristic indicative of pressure variation in the tire mounted on a particular wheel in response to said characteristic output indicative of rotation of the particular wheel, said control being operable to integrate said measured pressure outputs and said deduced characteristics to associate said at least two pressure sensors and respective tires with the particular wheels at which said at least two pressure sensors and respective tires are positioned; and a display operable to indicate the measured pressure of the tire at a particular wheel of the vehicle.
Claim 2
Dependent Claim
244 words
A self training tire pressure monitoring system for a vehicle having a set of tires, each of the tires being mounted at respective ones of a set of wheels of the vehicle, said self training tire pressure monitoring system comprising: first and second pressure sensors, said first and second pressure sensors being positioned at respective tires of at least two tires of the vehicle, said first and second pressure sensors being operable to provide measured pressure outputs indicative of the actual pressure of the respective tires; first and second wheel sensors positioned at respective ones of at least two wheels of the vehicle, the at least two tires being mounted on respective wheels of the at least two wheels, said first and second wheel sensors being operable to provide characteristic outputs indicative of rotation of the respective wheels; a control receiving said characteristic outputs and said measured pressure outputs, said control being operable to deduce a deduced characteristic indicative of pressure variation in the tire mounted on a particular wheel in response to said characteristic output indicative of rotation of the particular wheel, said control being operable to integrate said measured pressure outputs and said deduced characteristics to associate said at least two pressure sensors and respective tires with the particular wheels at which said at least two pressure sensors and respective tires are positioned; and a display operable to indicate the measured pressure of the tire at a particular wheel of the vehicle.
Claim 3
Dependent Claim
46 words
The self training tire pressure monitoring system of claim 1 , wherein said control is operable to correlate said measured pressure outputs with said deduced characteristics to match the pressure output of each of said first and second pressure sensors with one of said deduced characteristics.
Claim 4
Dependent Claim
91 words
The self training tire pressure monitoring system of claim 1 , wherein said control is operable to deduce said deduced characteristics in response to at least one of a deduced rolling radius of the at least two tires, a temperature of the at least two tires, a wheel speed of the at least two wheels, a wheel position of the at least two wheels, a wheel rotation of the at least two wheels, a speed of the vehicle, a differential of the vehicle and a wheel slip sensor of the vehicle.
Claim 5
Dependent Claim
48 words
The self training tire pressure monitoring system of claim 1 , wherein said control is operable to deduce said deduced characteristics over a period of time to define deduced characteristic signatures indicative of pressure variations in the tires mounted on the particular wheels over said period of time.
Claim 6
Dependent Claim
25 words
The self training tire pressure monitoring system of claim 1 , wherein said deduced characteristics comprise deduced rolling radii of the at least two tires.
Claim 7
Dependent Claim
42 words
The self training tire pressure monitoring system of claim 5 , wherein said control integrates said measured pressure outputs and said deduced rolling radii to determine the particular wheels at which said first and second pressure sensors and associated tires are located.
Claim 8
Dependent Claim
37 words
The self training tire pressure monitoring system of claim 6 , wherein said control is operable to deduce said deduced rolling radii in response to a rotation of the at least two wheels and a vehicle velocity.
Claim 9
Dependent Claim
37 words
The self training tire pressure monitoring system of claim 7 , wherein each of said first and second wheel sensors comprises at least one of a wheel speed sensor, a wheel rotation sensor and a rotary encoder.
Claim 10
Dependent Claim
50 words
The self training tire pressure monitoring system of claim 5 , wherein said control is operable to deduce said deduced rolling radii over a period of time to define deduced rolling radius signatures indicative of pressure variations in the tires mounted on the particular wheels over said period of time.
Claim 11
Dependent Claim
46 words
The self training tire pressure monitoring system of claim 9 , wherein said control is operable to compare said measured pressure outputs with said deduced characteristic signatures to determine the particular wheels at which said at least two pressure sensors and the associated tires are positioned.
Claim 12
Dependent Claim
53 words
The self training tire pressure monitoring system of claim 10 , wherein each of said first and second wheel sensors comprises at least one of a wheel speed sensor, a wheel rotation sensor, a wheel position sensor, a rotary encoder, a temperature sensor, a steering wheel, a differential and a wheel slip sensor.
Claim 13
Dependent Claim
34 words
The self training tire pressure monitoring system of claim 1 , wherein said first and second pressure sensors are operable to provide said measured pressure output to said control via a wireless communication link.
Claim 14
Dependent Claim
17 words
The self training tire pressure monitoring system of claim 1 , wherein said control comprises a microprocessor.
Claim 15
Dependent Claim
22 words
The self training tire pressure monitoring system of claim 1 , wherein said control comprises a digital signal processor comprising a microcomputer.
Claim 16
Dependent Claim
33 words
The self training tire pressure monitoring system of claim 1 , wherein each of said first and second pressure sensors comprises a pressure transducer, a temperature sensing means, a processor and a transmitter.
Claim 17
Dependent Claim
27 words
The self training tire pressure monitoring system of claim 1 , wherein each of said first and second pressure sensors comprises a pressure transducer and a transmitter.
Claim 18
Dependent Claim
26 words
The self training tire pressure monitoring system of claim 16 , wherein said transmitter of said first and second pressure sensors comprises a radio frequency transmitter.
Claim 19
Dependent Claim
22 words
The self training tire pressure monitoring system of claim 17 , wherein said control comprises a radio frequency antenna and a receiver.
Claim 20
Dependent Claim
46 words
The self training tire pressure monitoring system of claim 1 , wherein said set of tires comprises four tires of a vehicle and said self training tire pressure monitoring system comprises first, second, third and fourth pressure sensors and first, second, third and fourth wheel sensors.
Claim 21
Dependent Claim
37 words
The self training tire pressure monitoring system of claim 19 , wherein each of said first, second, third and fourth pressure sensors is positioned at a corresponding one of said at least four tires of the vehicle.
Claim 22
Dependent Claim
28 words
The self training tire pressure monitoring system of claim 1 , wherein said control is positioned at, within or on an interior rearview mirror assembly of the vehicle.
Claim 23
Dependent Claim
28 words
The self training tire pressure monitoring system of claim 21 , wherein said display is positioned at, within or on said interior rearview mirror assembly of the vehicle.
Claim 24
Independent Claim
141 words
A method for determining a pressure and location of each of at least two tires of a vehicle, the at least two tires being mounted at respective ones of at least two wheels of the vehicle, said method comprising: sensing a measured pressure within at least two tires of a vehicle in response to pressure sensors at respective tires of the at least two tires; deducing a deduced characteristic signature at respective wheels of at least two wheels of the vehicle, said deduced characteristic signature being indicative of pressure variations in the tires mounted at the respective wheels of the vehicle; correlating said measured pressures with said deduced characteristic signatures to determine the particular wheel at which each of the at least two tires is mounted; and displaying the measured pressure of the tire at the particular wheel of the vehicle.
Claim 25
Independent Claim
141 words
A method for determining a pressure and location of each of at least two tires of a vehicle, the at least two tires being mounted at respective ones of at least two wheels of the vehicle, said method comprising: sensing a measured pressure within at least two tires of a vehicle in response to pressure sensors at respective tires of the at least two tires; deducing a deduced characteristic signature at respective wheels of at least two wheels of the vehicle, said deduced characteristic signature being indicative of pressure variations in the tires mounted at the respective wheels of the vehicle; correlating said measured pressures with said deduced characteristic signatures to determine the particular wheel at which each of the at least two tires is mounted; and displaying the measured pressure of the tire at the particular wheel of the vehicle.
Claim 26
Dependent Claim
19 words
The method of claim 23 including communicating the measured pressure to a control via a radio frequency communication link.
Claim 27
Dependent Claim
31 words
The method of claim 23 , wherein deducing a deduced characteristic signature comprises deducing a deduced characteristic signature over a period of time to define a time dependent deduced characteristic signature.
Claim 28
Dependent Claim
88 words
The method of claim 23 , wherein deducing a deduced characteristic signature includes deducing a deduced characteristic signature in response to at least one of a deduced rolling radius of the at least two tires, a temperature of the at least two tires, a wheel speed of the at least two wheels, a wheel position of the at least two wheels, a wheel rotation of the at least two wheels, a speed of the vehicle, a differential of the vehicle and a wheel slip sensor of the vehicle.
Claim 29
Dependent Claim
32 words
The method of claim 23 , wherein deducing a deduced characteristic signature includes deducing a deduced characteristic signature corresponding to a rolling radius of the at least two tires of the vehicle.
Claim 30
Dependent Claim
74 words
The method of claim 27 , wherein deducing a deduced characteristic signature corresponding to a rolling radius of the at least two tires of the vehicle comprises deducing a deduced characteristic signature in response to an input from at least one of a wheel speed sensor, a wheel rotation sensor, a wheel position sensor, a rotary encoder, a vehicle speed sensor, a temperature sensor, a steering wheel, a differential and a wheel slip sensor.
Claim 31
Dependent Claim
32 words
The method of claim 27 , wherein deducing a deduced characteristic signature comprises deducing a deduced characteristic signature over a period of time to define a time dependent deduced rolling radius signature.
Claim 32
Dependent Claim
221 words
A self training tire pressure monitoring system for a vehicle having a set of tires, the tires being mounted at respective ones of a set of wheels of the vehicle, said self training tire pressure monitoring system comprising: at least two pressure sensors, said at least two pressure sensors being positioned at respective tires of a set of tires of the vehicle, said at least two pressure sensors being operable to provide a measured pressure output indicative of the actual pressure of the respective tires; at least two wheel sensors, said at least two wheel sensors being positioned at respective wheels of the vehicle, said at least two wheel sensors being operable to provide a wheel rotation output indicative of rotation of the respective wheels; a control receiving said measured pressure outputs and said wheel rotation outputs, said control being operable to deduce a deduced rolling radius for the tire mounted at a particular wheel in response to said wheel rotation output indicative of rotation of the particular wheel, said control being operable to integrate said measured pressure outputs and said deduced rolling radii to determine the particular wheels at which said at least two pressure sensors and associated tires are positioned; and a display operable to indicate the measured pressure of the tire at a particular wheel of the vehicle.
Claim 33
Dependent Claim
221 words
A self training tire pressure monitoring system for a vehicle having a set of tires, the tires being mounted at respective ones of a set of wheels of the vehicle, said self training tire pressure monitoring system comprising: at least two pressure sensors, said at least two pressure sensors being positioned at respective tires of a set of tires of the vehicle, said at least two pressure sensors being operable to provide a measured pressure output indicative of the actual pressure of the respective tires; at least two wheel sensors, said at least two wheel sensors being positioned at respective wheels of the vehicle, said at least two wheel sensors being operable to provide a wheel rotation output indicative of rotation of the respective wheels; a control receiving said measured pressure outputs and said wheel rotation outputs, said control being operable to deduce a deduced rolling radius for the tire mounted at a particular wheel in response to said wheel rotation output indicative of rotation of the particular wheel, said control being operable to integrate said measured pressure outputs and said deduced rolling radii to determine the particular wheels at which said at least two pressure sensors and associated tires are positioned; and a display operable to indicate the measured pressure of the tire at a particular wheel of the vehicle.
Claim 34
Dependent Claim
82 words
The self training tire pressure monitoring system of claim 30 , wherein said control is operable to deduce said deduced rolling radii in response to at least one of a temperature of the at least two tires, a wheel speed of the at least two wheels, a wheel position of the at least two wheels, a wheel rotation of the at least two wheels, a speed of the vehicle, a differential of the vehicle and a wheel slip sensor of the vehicle.
Claim 35
Dependent Claim
34 words
The self training tire pressure monitoring system of claim 30 , wherein said deduced rolling radii are calculated in response to a rotational velocity of the at least two wheels and a vehicle velocity.
Claim 36
Dependent Claim
61 words
The self training tire pressure monitoring system of claim 30 , wherein said at least two wheel sensors comprise at least one of at least two wheel speed sensors, at least two wheel rotation sensors, at least two wheel position sensors, at least two rotary encoders, at least two temperature sensors, a steering wheel, a differential and a wheel slip sensor.
Claim 37
Dependent Claim
25 words
The self training tire pressure monitoring system of claim 30 , wherein said at least two wheel sensors comprise at least two wheel speed sensors.
Claim 38
Dependent Claim
25 words
The self training tire pressure monitoring system of claim 30 , wherein said at least two wheel sensors comprise at least two wheel position sensors.
Claim 39
Dependent Claim
24 words
The self training tire pressure monitoring system of claim 30 , wherein said at least two wheel sensors comprise at least two rotary encoders.
Claim 40
Dependent Claim
49 words
The self training tire pressure monitoring system of claim 30 , wherein said control is operable to correlate said measured pressure outputs with said deduced rolling radii to match each of the measured pressure outputs of said at least two pressure sensors with one of said deduced rolling radii.
Claim 41
Dependent Claim
38 words
The self training tire pressure monitoring system of claim 37 , wherein said control is operable to deduce said deduced rolling radii in response to a rotational velocity of the at least two wheels and a vehicle velocity.
Claim 42
Dependent Claim
38 words
The self training tire pressure monitoring system of claim 30 , wherein said control is operable to deduce a deduced pressure of the at least two tires mounted on the wheels in response to said wheel rotation outputs.
Claim 43
Dependent Claim
47 words
The self training tire pressure monitoring system of claim 39 , wherein said control is operable to deduce said deduced pressures over a period of time to define deduced pressure signatures indicative of pressure variations in the tires mounted on the wheels over said period of time.
Claim 44
Dependent Claim
49 words
The self training tire pressure monitoring system of claim 40 , wherein said control is operable to correlate said measured pressure outputs with said deduced pressure signatures to match each of said measured pressure outputs of said at least two pressure sensors with one of said deduced pressure signatures.
Claim 45
Dependent Claim
75 words
The self training tire pressure monitoring system of claim 30 , wherein said control is operable to deduce each of said deduced rolling radii over a period of time to define a deduced rolling radius signature, said control being operable to compare said measured pressure outputs over said period of time with said deduced rolling radius signatures to determine the particular wheels at which the tires and said at least two pressure sensors are positioned.
Claim 46
Dependent Claim
31 words
The self training tire pressure monitoring system of claim 42 , wherein said period of time comprises a period of time following an activating event of said tire pressure monitoring system.
Claim 47
Dependent Claim
45 words
The self training tire pressure monitoring system of claim 43 , wherein said activating event comprises at least one of an activation of an ignition of the vehicle, a shifting into a forward or reverse gear of the vehicle and a movement of the vehicle.
Claim 48
Dependent Claim
34 words
The self training tire pressure monitoring system of claim 30 , wherein said at least two pressure sensors are operable to provide said measured pressure outputs to said control via a wireless communication link.
Claim 49
Dependent Claim
17 words
The self training tire pressure monitoring system of claim 30 , wherein said control comprises a microprocessor.
Claim 50
Dependent Claim
22 words
The self training tire pressure monitoring system of claim 30 , wherein said control comprises a digital signal processor comprising a microcomputer.
Claim 51
Dependent Claim
33 words
The self training tire pressure monitoring system of claim 30 , wherein each of said at least two pressure sensors comprises a pressure transducer, a temperature sensing means, a processor and a transmitter.
Claim 52
Dependent Claim
26 words
The self training tire pressure monitoring system of claim 48 , wherein said transmitter of said at least two pressure sensors comprises a radio frequency transmitter.
Claim 53
Dependent Claim
27 words
The self training tire pressure monitoring system of claim 30 , wherein each of said at least two pressure sensors comprises a pressure transducer and a transmitter.
Claim 54
Dependent Claim
26 words
The self training tire pressure monitoring system of claim 50 , wherein said transmitter of said at least two pressure sensors comprises a radio frequency transmitter.
Claim 55
Dependent Claim
22 words
The self training tire pressure monitoring system of claim 51 , wherein said control comprises a radio frequency antenna and a receiver.
Claim 56
Dependent Claim
61 words
The self training tire pressure monitoring system of claim 30 , wherein said set of tires comprises four tires of a vehicle and said at least two pressure sensors comprises at least four pressure sensors, said at least two wheels comprising at least four wheels of the vehicle and said at least two wheel sensors comprising at least four wheel sensors.
Claim 57
Dependent Claim
28 words
The self training tire pressure monitoring system of claim 30 , wherein said control is positioned at, within or on an interior rearview mirror assembly of the vehicle.
Claim 58
Dependent Claim
28 words
The self training tire pressure monitoring system of claim 54 , wherein said display is positioned at, within or on said interior rearview mirror assembly of the vehicle.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2007-05-04 | 2007-11-03 | 2008-05-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2011-05-04 | 2011-11-03 | 2012-05-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2015-05-04 | 2015-11-03 | 2016-05-04 | $7700.00 | Window Closed / Lapsed |