Tire pressure monitoring apparatus and method

• US 8,659,412 B2
• Filed: 12/10/2009
• Issued: 02/25/2014
• Est. Priority Date: 12/10/2009
• Status: Active Grant

• Current Assignee: Continental Automotive Systems, Inc. (Continental AG)
• Original Assignee: Continental Automotive Systems, Inc. (Continental AG)
• Inventors: Deniau, Jean-Christophe
• Primary Examiner(s): Nguyen, Tai T
• Application Number:
  US12/635,351
• Publication Number:
  US 20110140876A1
• Time in Patent Office: 1,538 Days
• Field of Search: 340/445, 340/442, 340/447, 340/438, 340/448, 340/506, 340/5.31, 340/5.61, 340/10.4, 731/465, 731/468, 732/041.9, 731/042.3
• US Class Current: 340/445
• CPC Class Codes: B60C 23/0408 transmitting the signals by non-mechanical means from the wheel or tyre to a vehicle body mounted receiver
• CPC Class Codes: B60C 23/0479 Communicating with external units being not part of the vehicle, e.g. tools for diagnostic, mobile phones, electronic keys or service stations

Abstract

A tire pressure measuring device is configured with a plurality of communication protocols. Tire pressure information is sensed using the tire pressure measuring device. The tire pressure information is transmitted from the tire pressure measuring device to an external receiver device according to each of the plurality of communication protocols.

Claims

1. A method of operating a tire pressure monitoring system comprising:

configuring a tire pressure measuring device with a plurality of separate programs that each transmit according to only one of a plurality of communication protocols;

sensing tire pressure information using the tire pressure measuring device;

wherein the plurality of separate programs are not changed after an initial installation;

receiving a trigger signal from a control unit;

upon receiving the trigger signal, transmitting the tire pressure information from the tire pressure measuring device to an external receiver device using a first subset of the plurality of separate programs during a first time period, the first subset being a plurality of programs;

subsequently transmitting the tire pressure information from the tire pressure measuring device to the external receiver device using a second subset of the plurality of separate programs during a second time period, the second subset being a plurality of programs.

2. The method of claim 1 further comprising:

configuring the external receiver device to operate according to a selected one of the plurality of communication protocols;

at the external receiver device;

receiving the tire pressure information;

recognizing the tire pressure information transmitted according to the selected one of the plurality of communication protocols and not recognizing the tire pressure information transmitted according to others of the plurality of communication protocols.

3. The method of claim 1 wherein the tire pressure information is transmitted at predetermined intervals.

4. The method of claim 1 wherein the external receiver device comprises a processor.

5. The method of claim 1 wherein the tire pressure information comprises a measured pressure of a tire.

6. The method of claim 1 wherein each of the plurality of communication protocols specifies a communication approach selected from a group consisting of:

a frequency of transmission and a format for transmission.

7. A system for monitoring tire pressure comprising:

a sensor, the sensor configured to obtain tire pressure information of a tire;

an internal receiver;

a transmitter coupled to the receiver and having an output and coupled to the sensor;

an external receiver device communicatively coupled to the transmitter;

wherein the transmitter is configured to transmit the tire pressure information to the external receiver device at the output of the transmitter using selected ones of a plurality of separate programs, each separate program transmitting according to only one of a plurality of communication protocols; and

wherein the external receiver device is configured to recognize the tire pressure information transmitted according to a selected one of the plurality of communication protocols and to not recognize the tire pressure information transmitted according to others of the plurality of communication protocols;

wherein the plurality of separate programs are not changed after an initial installation;

wherein the internal receiver is configured to receive a trigger signal from a control unit and the transmitter is configured to transmit the tire pressure information from the tire pressure measuring device to the external receiver device using a first subset of the plurality of separate programs during a first time period the first subset being a plurality of programs, and to subsequently transmit the tire pressure information from the tire pressure measuring device to the external receiver device using a second subset of the plurality of separate programs during a second time period, the second subset being a plurality of programs.

8. The system of claim 7 wherein the transmitter is configured to transmit the information at pre-selected intervals.

9. The system of claim 7 wherein the external receiver device comprises a processor.

10. The system of claim 7 wherein the tire pressure information comprises a measured pressure of the tire.

11. The system of claim 7 wherein each of the plurality of communication protocols specifies a communication approach selected from a group consisting of:

a frequency of transmission and a format for transmission.

12. The method of claim 11 wherein the communication approach is the format for transmission.

13. An apparatus for monitoring tire pressure comprising:

a sensor, the sensor configured to obtain tire pressure information of a tire;

a transmitter having an output and coupled to the sensor, the transmitter being configured to transmit the tire pressure information to an external receiver device at the output of the transmitter using selected ones of a plurality of separate programs, each separate program transmitting according to only one of a plurality of communication protocols;

wherein the plurality of separate programs are not changed after an initial installation;

wherein a receiver is coupled to the transmitter and is configured to receive a trigger signal, from a control unit and the transmitter is configured to transmit the tire pressure information to the external receiver device using a first subset of the plurality of separate programs during a first time period, the first subset being a plurality of programs, and to subsequently transmit the tire pressure information from the tire pressure measuring device to the external receiver device using a second subset of the plurality of separate programs during a second time period, the second subset being a plurality of programs.

14. The apparatus of claim 13 wherein the transmitter is configured to transmit the information at pre-selected intervals.

15. The apparatus of claim 13 wherein the tire pressure information comprises a measured pressure of the tire.

16. The apparatus of claim 13 wherein each of the plurality of communication protocols specifies a communication approach selected from a group consisting of:

a frequency of transmission and a format for transmission.

17. An apparatus comprising:

a receiver;

a sensor configured to sense tire pressure information; and

a transmitter coupled to the sensor and the receiver, and configured to transmit the tire pressure information from the sensor to an external receiver device using selected ones of a plurality of separate programs, each separate program transmitting according to only one of a plurality of communication protocols;

wherein the plurality of separate programs are not changed after an initial installation;

wherein the receiver is coupled to the transmitter and is configured to receive a trigger signal from a control unit, and the transmitter is configured to transmit the tire pressure information to the external receiver device using a first subset of the plurality of separate programs during a first time period, the first subset being a plurality of programs, and to subsequently transmit the tire pressure information from the tire pressure measuring device to the external receiver device using a second subset of the plurality of separate programs during a second time period, the second subset being a plurality of programs.

18. The apparatus of claim 17 wherein the tire pressure information is transmitted at predetermined intervals.

19. The apparatus of claim 17 wherein the tire pressure information comprises a measured pressure of a tire.

20. The apparatus of claim 17 wherein each of the plurality of communication protocols specifies a communication approach selected from a group consisting of:

a frequency of transmission and a format for transmission.

21. A non-transitory computer readable medium comprising computer executable instructions adapted to perform a method, the method comprising:

sensing tire pressure information at the tire pressure measuring device;

transmitting the tire pressure information from the tire pressure measuring device to an external receiver device using selected ones of a plurality of separate programs each separate program transmitting according to only one of the plurality of communication protocols;

wherein the plurality of separate programs are not changed after an initial installation

receiving a trigger signal;

upon receiving the trigger signal from a control unit, transmitting the tire pressure information from the tire pressure measuring device to the external receiver device using a first subset of the plurality of separate programs during a first time period, the first subset being a plurality of programs;

subsequently transmitting the tire pressure information from the tire pressure measuring device to the external receiver device using a second subset of the plurality of separate programs during a second time period, the second subset being a plurality of programs.

22. A method of operating a tire pressure monitoring system comprising:

configuring a tire pressure measuring device with a plurality of separate programs that each transmit according to only one of a plurality of communication protocols;

sensing tire pressure information using the tire pressure measuring device;

receiving a trigger signal from a control unit;

upon receiving the trigger signal, transmitting the tire pressure information from the tire pressure measuring device to the external receiver device using a first subset of the plurality of separate programs during a first time period, the first subset being a plurality of programs;

subsequently transmitting the tire pressure information from the tire pressure measuring device to the external receiver device using a second subset of the plurality of separate programs during a second time period, the second subset being a plurality of programs.

23. The method of claim 22 further comprising:

configuring the external receiver device to operate according to a selected one of the plurality of communication protocols;

at the external receiver device;

receiving the tire pressure information;

recognizing the tire pressure information transmitted according to the selected one of the plurality of communication protocols and not recognizing the tire pressure information transmitted according to others of the plurality of communication protocols.

24. The method of claim 22 wherein the tire pressure information is transmitted at predetermined intervals.

25. The method of claim 22 wherein the external receiver device comprises a processor.

26. The method of claim 22 wherein the tire pressure information comprises a measured pressure of a tire.

27. The method of claim 22 wherein each of the plurality of communication protocols specifies a communication approach selected from a group consisting of:

a frequency of transmission and a format for transmission.