System and method for tire pressure monitoring including tire location recognition

• US 6,668,636 B2
• Filed: 06/05/2002
• Issued: 12/30/2003
• Est. Priority Date: 03/01/2002
• Status: Expired due to Fees

• Current Assignee: Lear Corporation
• Original Assignee: Lear Corporation
• Inventors: Nantz, John S., Ghabra, Riad, King, Ronald O., Li, Qing, Tang, Qingfeng, Turovsky, Art, Conner, Bruce, Walker, Keith, Bejster, Thomas
• Primary Examiner(s): McCall, Eric S.
• Application Number:
  US10/164,339
• Publication Number:
  US 20030164031A1
• Time in Patent Office: 573 Days
• Field of Search: 731/46, 731/462, 731/463, 731/464, 731/465, 340/425.5, 340/438, 340/442, 340/443, 340/445, 340/446, 340/447, 340/448
• US Class Current: 73/146.4
• CPC Class Codes: B60C 23/0416 allocating a corresponding wheel position on vehicle, e.g. front/left or rear/right
• CPC Class Codes: H01Q 1/325 characterised by the location of the antenna on the vehicle
• CPC Class Codes: H01Q 21/24 Combinations of antenna units polarised in different directions for transmitting or receiving circularly and elliptically polarised waves or waves linearly polarised in any direction circularly polarised patch antennas H01Q9/0428; circularly polarised horns H01Q13/0241; cross-polarised horns H01Q13/0258; polarisation converters H01Q15/242; cross-polarised rear feeds H01Q19/136; crossed polarisation dual antenna H01Q25/001
• CPC Class Codes: H01Q 7/00 Loop antennas with a substantially uniform current distribution around the loop and having a directional radiation pattern in a plane perpendicular to the plane of the loop
• CPC Class Codes: H01Q 9/30 with feed to end of elongated active element, e.g. unipole H01Q9/44 takes precedence
• CPC Class Codes: H03B 5/326 the resonator being an acoustic wave device, e.g. SAW or BAW device
• CPC Class Codes: H03C 1/46 Modulators with mechanically-driven or acoustically-driven parts

Abstract

In a system for remote monitoring of vehicle tire pressure, a system and method for identifying tire location. A tire pressure monitor for each tire includes a sensor for sensing tire pressure, a transmitter for transmitting a signal representative of the sensed tire pressure, and a sensor for sensing an impact to the tire and for actuating the transmitter to transmit a tire pressure signal in response. A receiver for mounting on the vehicle receives the tire pressure signals. A controller for mounting on the vehicle communicates with the receiver and is for use in conveying tire pressure and location information to a user. When the vehicle is stationary, each tire is struck in a preselected sequence so that each received tire pressure signal is automatically associated with one of the plurality of tire locations.

Claims

1. In a system for remote monitoring of tire pressure in a vehicle having a plurality of tires, each tire having a location, a system for identifying tire location comprising:

a plurality of tire monitors, each monitor for mounting in one of the plurality of tires, each monitor comprising a sensor for sensing tire pressure, a transmitter for transmitting a signal representative of the sensed tire pressure, and a sensor for sensing an impact to the tire and for actuating the transmitter to transmit a tire pressure signal in response thereto;

a receiver for mounting on-board the vehicle for receiving the tire pressure signals transmitted by the transmitters; and

a controller for mounting on-board the vehicle and to be provided in communication with the receiver, the controller for processing tire pressure signals received by the receiver and conveying tire pressure and location information to a user, wherein, when the vehicle is stationary, each of the plurality of tires is struck in a preselected sequence so that, for each tire, the impact sensor actuates the transmitter to transmit a tire pressure signal and each received tire pressure signal is automatically associated with one of the plurality of tire locations.

2. The system of claim 1 wherein, for use in determining when the vehicle is stationary, each tire monitor further comprises a sensor for sensing tire rotation, and the impact sensor actuates the transmitter to transmit a tire pressure signal only in the absence of tire rotation sensed by the rotation sensor.

3. The system of claim 2 further comprising a display for mounting in the vehicle, the display for use by the controller to covey tire pressure and location information to a user.

4. The system of claim 1 wherein each tire monitor has an identification associated therewith, and each transmitter is also for transmitting the identification of the associated monitor for receipt by the receiver and for use by the controller in identifying an associated tire location.

5. The system of claim 4 wherein the transmitted identification is also for use by the controller in identifying the tire pressure signals as associated with the vehicle.

6. In a system for remote monitoring of tire pressure in a vehicle having a plurality of tires, each tire having a location, a system for identifying tire location comprising:

a plurality of tire monitors, each monitor for mounting in one of the plurality of tires, each monitor comprising a sensor for sensing tire pressure, a transmitter for transmitting a signal representative of the sensed tire pressure, and a sensor for sensing an impact to the tire and for actuating the transmitter to transmit a tire pressure signal in response thereto;

a receiver for mounting on-board the vehicle for receiving the tire pressure signals transmitted by the transmitters; and

a controller for mounting on-board the vehicle and to be provided in communication with the receiver, the controller for processing tire pressure signals received by the receiver and for conveying tire pressure information to a user, wherein, to identify a tire location associated with a low tire pressure indiction conveyed by the controller, at least one tire is struck when the vehicle is stationary so that the associated impact sensor actuates the associated transmitter and, if the associated tire pressure signal transmitted represents a low tire pressure, the controller conveys confirmatory information that the at least one tire struck has low pressure.

7. The system of claim 6 wherein to convey confirmatory information, the controller is for use in generating an audible signal.

8. The system of claim 7 wherein the audible signal comprises activating a vehicle horn.

9. The system of claim 6 wherein to convey confirmatory information, the controller is for use in generating a visual signal.

10. The system of claim 9 wherein the visual signal comprises activating a vehicle light.

11. In a system for remote monitoring of tire pressure in a vehicle having a plurality of tires, each tire having a location, a method for identifying tire location comprising:

providing a plurality of tire monitors, each monitor for mounting in one of the plurality of tires, each monitor comprising a sensor for sensing tire pressure, a transmitter for transmitting a signal representative of the sensed tire pressure, and a sensor for sensing an impact to the tire and for actuating the transmitter to transmit a tire pressure signal in response thereto;

providing a receiver for mounting on-board the vehicle for receiving the tire pressure signals transmitted by the-transmitters; and

providing a controller for mounting on-board the vehicle and to be provided in communication with the receiver, the controller for processing tire pressure signals received by the receiver and conveying tire pressure and location information to a user, wherein, when the vehicle is stationary, each of the plurality of tires is struck in a preselected sequence so that, for each tire, the impact sensor actuates the transmitter to transmit a tire pressure signal and each received tire pressure signal is automatically associated with one of the plurality of tire locations.

12. The method of claim 11 wherein, for use in determining when the vehicle is stationary, each tire monitor further comprises a sensor for sensing tire rotation, and the impact sensor actuates the transmitter to transmit a tire pressure signal only in the absence of tire rotation sensed by the rotation sensor.

13. The method of claim 12 further comprising providing a display for mounting in the vehicle, the display for use by the controller to covey tire pressure and location information to a user.

14. The method of claim 11 wherein each tire monitor has an identification associated therewith, and each transmitter is also for transmitting the identification of the associated monitor for receipt by the receiver and for use by the controller in identifying an associated tire location.

15. The method of claim 14 wherein the transmitted identification is also for use by the controller in identifying the tire pressure signals as associated with the vehicle.

16. In a system for remote monitoring of tire pressure in a vehicle having a plurality of tires, each tire having a location, a method for identifying tire location comprising:

providing a plurality of tire monitors, each monitor for mounting in one of the plurality of tires, each monitor comprising a sensor for sensing tire pressure, a transmitter for transmitting a signal representative of the sensed tire pressure, and a sensor for sensing an impact to the tire and for actuating the transmitter to transmit a tire pressure signal in response thereto;

providing a receiver for mounting on-board the vehicle for receiving the tire pressure signals transmitted by the transmitters; and

providing a controller for mounting on-board the vehicle and to be provided in communication with the receiver, the controller for processing tire pressure signals received by the receiver and for conveying tire pressure information to a user, wherein, to identify a tire location associated with a low tire pressure indiction conveyed by the controller, at least one tire is struck when the vehicle is stationary so that the associated impact sensor actuates the associated transmitter and, if the associated tire pressure signal transmitted represents a low tire pressure, the controller conveys confirmatory information that the at least one tire struck has low pressure.

17. The method of claim 16 wherein to convey confirmatory information, the controller is for use in generating an audible signal.

18. The method of claim 17 wherein the audible signal comprises activating a vehicle horn.

19. The method of claim 16 wherein to convey confirmatory information, the controller is for use in generating a visual signal.

20. The method of claim 19 wherein the visual signal comprises activating a vehicle light.