Tire deformation detection

• US 7,472,587 B1
• Filed: 09/18/2007
• Issued: 01/06/2009
• Est. Priority Date: 09/18/2007
• Status: Active Grant

• Current Assignee: Infineon Technologies AG
• Original Assignee: Infineon Technologies AG
• Inventors: Hawraneck, Matthias Karl Robert, Theuss, Horst, Loehndorf, Markus
• Primary Examiner(s): Allen; Andre J
• Application Number:
  US11/856,725
• Time in Patent Office: 476 Days
• Field of Search: 731/46, 731/463
• US Class Current: 73/146
• CPC Class Codes: G01M 17/02 Tyres

Abstract

Embodiments of the invention are related to systems, methods, and apparatuses for detecting tire deformation. In one embodiment, a tire deformation detection system comprises a deformation detection structure, a transmitter, and receiver. The deformation detection structure can be mounted in a tire and configured to detect mechanical deformation of the tire. The transmitter can be configured to transmit data related to the mechanical deformation. The receiver can be configured to receive the data.

Claims

1. A tire deformation detection system comprising:

a deformation detection structure mounted in a tire and configured to detect mechanical deformation of the tire, wherein the deformation detection structure comprises at least one stress detection array coupled to a sensor;

a transmitter configured to transmit data related to the mechanical deformation; and

a receiver configured to receive the data.

2. The system of claim 1, wherein the deformation detection structure further comprises a detector layer, wherein the at least one stress detection array and the sensor are mounted on a detector layer, and wherein the detector layer is configured to be adhesively affixed to an internal surface of the tire.

3. The system of claim 1, wherein the at least one stress detection array comprises a plurality of load structures.

4. The system of claim 3, wherein each of the plurality of load structures comprises one of a parallel resistive circuit and a series resistive circuit.

5. The system of claim 3, wherein each of the plurality of load structures is configured to deform in response to a mechanical deformation of the tire.

6. The system of claim 5, wherein each of the plurality of load structures is configured to permanently deform in response to a mechanical deformation of the tire.

7. The system of claim 5, wherein the sensor is configured to detect a change in the at least one stress detection array related to a deformation of at least one of the plurality of load structures.

8. The system of claim 7, wherein the change comprises a resistance of the at least one stress detection array.

9. The system of claim 1, further comprising an alert system configured to provide an indicator related to the data.

10. A tire deformation detection system comprising:

a deformation detection structure mounted in a tire and configured to detect mechanical deformation of the tire, wherein the deformation detection structure comprises at least one optical waveguide mounted along a circumference of the tire coupled to an integrated optical coupler and detector configured to detect a change in light in the at least one optical waveguide in response to a mechanical deformation of the tire;

a transmitter configured to transmit data related to the mechanical deformation; and

a receiver configured to receive the data.

11. The system of claim 10, wherein the integrated optical coupler and detector comprises:

a light source input;

a beam splitter coupled to the at least one optical waveguide; and

a waveguide coupler arranged between the light source input and the beam splitter.

12. The system of claim 11, wherein the light source is configured to initiate at least one of a modulated signal and a pulsed signal.

13. The system of claim 10, wherein the change in light comprises at least one of a change in amplitude, phase, transmission, reflection, attenuation, and runtime effect.

14. The system of claim 10, wherein the integrated optical coupler and detector comprises a molded interconnect device.

15. The system of claim 10, wherein the at least one optical waveguide is affixed to an interior surface of the tire.

16. The system of claim 10, wherein the at least one optical waveguide is affixed to a tread portion of the tire.

17. A mechanical deformation detection apparatus comprising:

a deformation detector affixed along at least a portion of a circumferential length of a tire and adapted to change in response to a deformation of the tire; and

a sensor coupled to the deformation detector and adapted to sense the change of the deformation detector.

18. The apparatus of claim 17, wherein the deformation detector comprises a plurality of interconnected resistors configured to break in response to the deformation, and wherein the sensor is adapted to sense a change in resistance.

19. The apparatus of claim 17, wherein the deformation detector comprises an optical waveguide, and wherein the sensor comprises an optical detector adapted to sense a change in light passing through the optical waveguide.

20. The apparatus of claim 17, further comprising a transmitter adapted to transmit signals related to the change sensed by the sensor.

21. A method of detecting a deformation of a tire comprising the steps of:

providing a detector configured to deform in response to a mechanical deformation of the tire;

sensing a deformation of the detector; and

outputting a signal related to the deformation sensed.

22. The method of claim 21, wherein the step of providing a detector further comprises the steps of:

providing a detector comprising a plurality of interconnected load structures arranged in at least one array on a detector layer; and

affixing the detector to the tire.

23. The method of claim 22, wherein the step of sensing a deformation further comprises sensing a change in resistance of the at least one array caused by a breakage of at least one of the load structures in response to the deformation.

24. The method of claim 21, wherein the step of providing a detector further comprises the steps of:

providing a detector comprising an optical waveguide coupled to an optical coupler/detector comprising a light source; and

mounting the detector along a circumference of the tire.