METHOD FOR MANAGING TYRE IDENTIFIERS

• US 20150239306A1
• Filed: 06/22/2012
• Published: 08/27/2015
• Est. Priority Date: 06/22/2012
• Status: Active Grant

• Current Assignee: LDL Technology SAS
• Original Assignee: Manuel Bracq
• Inventors: Lefaure, Philippe, Bracq, Manuel
• Granted Patent: US 10,682,892 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: B60C 19/00 Tyre parts or constructions not otherwise provided for
• CPC Class Codes: B60C 2019/004 Tyre sensors other than for detecting tyre pressure
• CPC Class Codes: B60C 23/009 having wheels on a trailer
• 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 23/0416 allocating a corresponding wheel position on vehicle, e.g. front/left or rear/right
• CPC Class Codes: B60C 23/0447 Wheel or tyre mounted circuits
• CPC Class Codes: B60C 23/0462 Structure of transmission protocol
• 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
• CPC Class Codes: B60C 23/0483 Wireless routers between wheel mounted transmitters and chassis mounted receivers
• CPC Class Codes: B60C 23/0493 for attachment on the tyre
• CPC Class Codes: G01M 17/02 Tyres
• CPC Class Codes: G06K 19/00 Record carriers for use with machines and with at least a part designed to carry digital markings
• CPC Class Codes: G06K 19/07749 the record carrier being capable of non-contact communication, e.g. constructional details of the antenna of a non-contact smart card
• CPC Class Codes: G06K 19/07764 the adhering arrangement making the record carrier attachable to a tire tire temperature or pressur control arrangements, see B60C23/00

Abstract

The invention relates to a method for managing data relating to an assembly forming a wheel (R) of a vehicle (C), said wheel (R) including a tyre mounted on a rim, said wheel having a measurement module (110), said tyre having an identifier made up of a radio tag (200) such as an RFID marker, said wheel being capable of having different states: mounted in which said tyre is mounted on the rim; and unmounted in which said tyre is not mounted on the rim, in which the measurement module (110) detects a pressure variation inside the tyre, and in which the storage memory of said measurement module (110) is rewritable, characterised in that said method consists of in the event of a pressure variation, replacing the data stored in the measurement module (110) with new data from another tyre. The invention is useful in the management of data relating to tyres and wheels.

Claims

1. Method for managing data relating to an assembly forming a wheel of a vehicle, said wheel comprising a tire mounted on a rim, said wheel carrying a measuring module, said tire carrying an identifier comprising a radio-frequency tag of the RFID marker type,

said wheel being able to have various states:

mounted, where said tire is mounted on the rim;

demounted, where said tire is not mounted on the rim;

where the measuring module detects the variation in pressure in the tire, and

where the storage memory of said measuring module is rewritable,

characterized in that it comprises, when there is a variation in pressure, replacing the data stored in the measuring module with new data issuing from another tire.

2. Method according to claim 1, characterized in that it comprises defining a low pressure threshold, the passing of which, detected by the measuring module, triggers the deletion by replacement of the content of the memory of the measuring module containing the data associated with the identifier.

3. Method according to claim 1, characterized in that it comprises defining a high pressure threshold, the passing of which, detected by the measuring module after passing of the low threshold, and therefore when the pressure rises again, triggers the replacement and therefore the deletion of the content of the memory of the measuring module containing the data associated with the identifier.

15. Method according to claim 1, characterized in that the measuring module activates and/or communicates with the radiofrequency tag by means of a transmission of waves beyond 100 MHz reflected on the metal structure of the tire.

16. Method according to claim 15, wherein the measuring module communicates with a reception unit integrated in the chassis of the vehicle, characterized in that said radio-frequency tag transmits the data that it contains to the reception unit.

17. Method according to claim 15, characterized in that it comprises equipping the measuring module with an isotropic antenna.

18. Method according to claim 1, wherein the measuring module communicates with a reception unit integrated in the chassis of the vehicle, characterized in that it comprises integrating, in the communication frame of said module, all or some of the data issuing from the reading of the identifier and stored in the memory.

19. Method according to claim 1, characterized in that it comprises measuring the variation in pressure over a given period before effecting the replacement of the identifier associated with the radio-frequency tag in the electronic module.

20. Method according to claim 1, characterized in that the data from the radio-frequency tag are transmitted to said measuring module when the wheel is being mounted, that is to say when the wheel assembly is in a state where the tire is not yet fixed to the rim.

21. Method according to claim 1, characterized in that the data are transmitted to said measuring module when there are no data relating to the tire entered in the memory of said module.

22. Method according to claim 1, characterized in that data issuing from the tire are transmitted to said module with supplementary data, such as for example data relating to a maintenance operation.

23. Method according to claim 1, characterized in that it comprises, in the memory of the measuring module, associating, with the data issuing from the RFID marker stored in the memory, information relating to the pressure drop measured.

24. Method according to claim 1, characterized by the fact that said intermediate unit communicates with said radio-frequency tag and said measuring module so as to match the identification data of the tire with those of the measuring module and sends said match to the reception unit associated with the chassis.

5-14. -14. (canceled)