Pneumatic tire equipped with electronic components

Abstract

Pneumatic tires equipped with radio frequency transponders and comprising a crown, two sidewalls, two beads and at least one annular carcass ply, each bead comprising at least one annular bead rotating about a reference axis wire, the annular carcass ply is coaxial with the reference axis, anchored in the bead and divides the pneumatic tire into two regions located inside and outside the carcass ply, and the radio frequency transponder includes at least one electronic chip and radio communication radiating antenna and located radially externally with respect to said bead wire, characterized in that said radio frequency transponder comprises a main antenna electrically connected to said electronic chip, said main antenna being electromagnetically coupled to said radiating antenna , and the radiating antenna is formed from a single helical spring defining a first longitudinal axis.

Description

technical field [0001] The invention relates to a tire casing equipped with an electronic unit communicating with a radio frequency device located outside the casing. Background technique [0002] The development of electronic units integrated into mounted components, including tire casings and wheels, has intensified over the past few years. In particular, these electronic units, such as radio frequency transponders or RFID (acronym for radio frequency identification) tags, contain information about the installed components, such as the identifier of the casing, its characteristic dimensions, etc., in the management and storage of said products This information is key data. In addition, these electronic units are also able to measure parameters of the mounted assembly, for example, the temperature in the cavity formed by the tire casing and the rim in the mounted inflated state. These parameters are critical to the safe use of mounted components. In particular, communica...

AI Technical Summary

Problems solved by technology

Integrating such an electronic unit into the casing structure poses a certain number of challenges

Firstly, the insertion of electronic units into the structure of the tire may lead to degradation of the casing; it is therefore necessary to ensure that the casing maintains its physical integrity throughout its life cycle

The second challenge concerns the radio communication performance of the electronic unit

However, the determined position, although corresponding to an optimal compromise, is not optimal in terms of radio communication due to the constraints of the structural integrity of the electronic unit subject to the thermomechanical stresses generated by the running of the tires

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