Tire pressure monitor and location identification system

• US 6,369,703 B1
• Filed: 06/30/2000
• Issued: 04/09/2002
• Est. Priority Date: 06/30/2000
• Status: Expired due to Term

• Current Assignee: Loopback Technologies, Inc. (Marathon Patent Group, Inc.)
• Original Assignee: Eaton Corp. (Wisconsin) (Eaton Corporation PLC.)
• Inventors: Lill, Thomas M.
• Primary Examiner(s): Lefkowitz, Edward
• Application Number:
  US09/607,302
• Time in Patent Office: 648 Days
• Field of Search: 340/442, 340/445, 340/447, 731/465, 731/462, 731/464
• US Class Current: 340/447
• CPC Class Codes: B60C 23/0416 allocating a corresponding wheel position on vehicle, e.g. front/left or rear/right

Abstract

A system for monitoring and tire pressure in vehicles and correlating the specific locations of the vehicle tires with the tire pressure data of each tire. The system includes a tire pressure monitor operatively connected to each tire. A plurality of transponders, each having a unique identification code, are fixed to the vehicle such that there is one transponder secured proximate to a predetermined tire. During operation, each tire pressure monitor transmits tire pressure data to its corresponding transponder. The transponder adds its unique location identification code to the tire pressure data and transmits the data to a central system receiver. The central system receiver selectively displays the tire pressure data by tire location.

Claims

1. A tire pressure monitor and identification system for a vehicle, comprising:

at least one tire pressure monitor operatively connected to a vehicle tire;

said tire pressure monitor adapted to collect tire pressure data for said vehicle tire;

at least one transponder connected to said vehicle, said transponder having a location identification code, said transponder adapted to receive said tire pressure data from said tire pressure monitor; and

a central system receiver for receiving said tire pressure data for said vehicle tire and said location identification code from said transponder, wherein said central system receiver is adapted to selectively provide said pressure data and a location identification indication of said tire to a vehicle operator.

2. The tire pressure monitor and identification system of claim 1, wherein said tire pressure monitor is mounted to said vehicle tire.

3. The tire pressure monitor and identification system of claim 2, wherein said tire pressure monitor is mounted in said air valve stem of said vehicle tire.

4. The tire pressure monitor and identification system of claim 1, wherein said transponder is mounted to the vehicle, proximate to said vehicle tire.

5. The tire pressure monitor and identification system of claim 4, wherein said transponder is permanently secured to the vehicle.

6. The tire pressure monitor and identification system of claim 1, wherein said tire pressure data is transmitted from said tire pressure monitor by one of a radio frequency signal, inductive signal, ultrasonic signal and infrared signal.

7. The tire pressure monitor and identification system of claim 1, wherein said transponder transmits said tire pressure data and said location identification code to said central system receiver via radio frequency.

8. The tire pressure monitor and identification system of claim 1, wherein said central system receiver is connected to a display to provide to a vehicle operator said tire pressure data for said vehicle tire and a location identification of said vehicle tire.

9. The tire pressure monitor and identification system of claim 8, wherein said central system receiver indicates said tire pressure data and location identification of said vehicle data when said tire pressure drops beneath a predetermined pressure.

10. The tire pressure monitor and identification system of claim 1, wherein said central system receiver is programmed to ignore radio frequency signals received from said tire pressure monitor.

11. The tire pressure monitor and identification system of claim 1, wherein said transponder is powered by a battery.

12. The tire pressure monitor and identification system of claim 11, wherein said transponder transmits a low voltage signal to said central system receiver when the voltage of said battery drop beneath a predetermined value.

13. A tire pressure monitor and identification system for a vehicle, comprising:

at least one tire pressure monitor operatively connected to each vehicle tire;

each of said tire pressure monitors adapted to collect tire pressure data for each corresponding vehicle tire;

a plurality of transponders connected to said vehicle such that at least one transponder is positioned proximate to each vehicle tire;

wherein each of said transponders has a unique location identification code;

wherein each of said transponders receives said tire pressure data from a unique tire pressure monitor; and

a central system receiver for receiving said tire pressure data for said vehicle tire and said location identification code from said transponders, wherein said central system receiver selectively provides said tire pressure data and a location identification of each of said tires to a vehicle operator.

14. The tire pressure monitor and identification system of claim 13, wherein each of said transponders has a predetermined limited signal receiving area such that each of said transponders may only receive tire pressure data from the closest positioned tire pressure monitor.

15. The tire pressure monitor and identification system of claim 13, wherein each of said transponders are powered by individual batteries.

16. The tire pressure monitor and identification system of claim 15, wherein said transponders transmit a low voltage signal to said central system receiver when the voltage of said batteries drop beneath a predetermined value.

17. The tire pressure monitor and identification system of claim 16, wherein said transponders transmit said tire pressure data, location identification codes and battery voltage information to said central system receiver via radio frequency.

18. The tire pressure monitor and identification system of claim 13, wherein said tire pressure data is transmitted from said tire pressure monitors via radio frequency.

19. The tire pressure monitor and identification system of claim 18, wherein said central system receiver is programmed to ignore radio frequency signals received from said tire pressure monitor.

20. The tire pressure monitor and identification system of claim 18, wherein said central system receiver compares radio frequency signals received from respective tire pressure monitors to radio frequency signals received from corresponding transponders to insure operability of said system.