SYSTEM FOR EVALUATING THE CONDITION OF A TIRE

• US 20170350792A1
• Filed: 12/11/2015
• Published: 12/07/2017
• Est. Priority Date: 12/17/2014
• Status: Active Grant

• Current Assignee: Compagnie générale des établissements Michelin
• Original Assignee: Compagnie générale des établissements Michelin, Michelin Recherche et Technique SA (Compagnie Generale DES Etablissements Michelin SCA)
• Inventors: LEDOUX, THOMAS, MARTIN, DENIS, HEREDIA, GUILLAUME, PERNOT, ALEXANDRE
• Granted Patent: US 10,712,238 B2
• Time in Patent Office: Days
• CPC Class Codes: B60C 11/246 Tread wear monitoring systems
• CPC Class Codes: G01B 13/24 for measuring the deformation in a solid
• CPC Class Codes: G01M 17/021 Tyre supporting devices, e.g. chucks for balancing G01M1/04
• CPC Class Codes: G01N 27/82 for investigating the presence of flaws

Abstract

The invention relates to a system for evaluating the condition of a tire, the system comprising a first housing placed on the ground and a device for detecting the wear of a tire when the tire passes over said first housing, said system further comprising

• • a first device for detecting the presence of a tire over the first housing, and
  • electronic means for activating the wear detecting device during the detection of the presence of a tire by the presence detecting device.

Claims

1-12. -12. (canceled)

13. A system for evaluating a condition of a tire, the system comprising:

a housing placed on a ground surface;

a wear detector that detects a wear condition of a tire when the tire passes over the housing;

a tire presence detector that detects a presence of the tire over the housing; and

an electronic activator that activates the wear detector during detection of the presence of a tire by the tire presence detector.

14. The system according to claim 13, wherein a distance, projected on a surface parallel to the ground surface, between the wear detector and the tire presence detector or an access ramp for accessing the housing is greater than a distance travelled by a vehicle at a predetermined speed in a time corresponding to a time required for activation of the wear detector.

15. The system according to claim 13, wherein the tire presence detector includes at least one sensor that is sensitive to a variation in at least one of:

a strength of a terrestrial magnetic field and an orientation of the terrestrial magnetic field.

16. The system according to claim 13, wherein the tire presence detector includes at least one extensometer.

17. The system according to claim 13, wherein the tire presence detector includes a leaktight cavity accommodating a fluid and a pressure sensor installed therein to measure a pressure of the fluid in the cavity.

18. The system according to claim 13, wherein the tire presence detector includes at least one accelerometer.

19. The system according to claim 13, wherein the tire presence detector includes at least one sensor sensitive to shock.

20. The system according to claim 13, wherein the tire presence detector is fixed directly on the housing.

21. The system according to claim 13,

wherein the tire presence detector is fixed on a printed circuit board or a stiff board formed of a material having a stiffness less than that of a material forming the housing, and

wherein the printed circuit board or the stiff board is fastened to the housing.

22. The system according to claim 13, wherein the tire presence detector is embedded in a material forming the housing.

23. The system according to claim 13, further comprising a second tire presence detector.

24. The system according to claim 13, further comprising an adjuster that adjusts a sensitivity of the tire presence detector.