Vehicle Tire Data Management via Chassis RFID Antenna
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Solution Overview
Problem
Current tire traceability systems face challenges in monitoring and locating tires moved between rims during maintenance, especially in heavy goods vehicles where wear varies by position, and existing RFID-based solutions are costly, complex, and require extensive onboard electronics.
Innovation Solution
A method that uses a measuring module on the wheel to detect pressure variations, replacing data associated with the RFID tag when a new tire is installed, leveraging an intermediate unit for real-time data transmission through the existing tire monitoring network, and employing a communication system that activates the RFID tag using waves beyond 100 MHz reflected on the tire's metal structure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If radio-frequency tags are integrated into the tire with wound antennas fixed to the chassis, then tire identification and traceability are enabled, but the system becomes expensive and complex with difficult installation
Solution Approach 1:
The patent extracts the RFID reading function from the wheel assembly and places it on the chassis. The antenna is fixed to the chassis near the wheel arches, separating the identification function from the wheel module and simplifying the overall system architecture
Solution Approach 2:
The patent introduces an intermediary approach where the chassis-mounted antenna serves as the mediator between the tire RFID tag and the vehicle's electronic system, eliminating the need for complex onboard computers and dedicated reading equipment at each wheel
2Quantity of substance
If passive RFID tags are used without energy supply, then cost is reduced, but the antenna must cover 360 degrees to remain accessible for communication
Solution Approach 1:
The patent segments the antenna system by fixing the antenna to the chassis rather than requiring a complete 360-degree coverage around the tire. This segmentation allows the use of simpler passive RFID tags without requiring complex multi-directional antenna configurations
Solution Approach 2:
The patent uses the existing TPMS antenna infrastructure to also serve RFID communication purposes, creating a multi-functional system that reduces overall complexity while maintaining passive RFID operation
3Reliability
If an antenna runs round the tire, then RFID communication is enabled, but the cost increases requiring one antenna per wheel and dedicated onboard computer
Solution Approach 1:
The patent makes the chassis-mounted antenna universal by having it serve both TPMS communication and RFID tag reading functions. This multi-functionality eliminates the need for separate antennas and dedicated onboard computers for each wheel, significantly reducing system cost and complexity
Solution Approach 2:
The patent merges the TPMS antenna system with the RFID reading function into a single integrated solution. The same antenna infrastructure that communicates with pressure sensors also reads tire identification tags, consolidating multiple functions into one system
4Reliability
If measuring modules are equipped with RFID reading capability, then tire data management is improved, but additional cost is incurred for each module
Solution Approach 1:
The patent extracts the RFID reading capability from the individual wheel measuring modules and centralizes it in the chassis-mounted antenna system. This extraction eliminates the need for expensive RFID reading equipment in each module while maintaining comprehensive tire data management
Solution Approach 2:
The patent introduces the chassis-mounted antenna as an intermediary that handles all RFID communication centrally. The measuring modules continue to perform their pressure monitoring function without needing RFID capabilities, while the intermediary antenna handles tag reading and data correlation
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This approach enables efficient, real-time tire traceability without additional transmission systems, reduces costs by eliminating the need for dedicated RFID reading equipment, and ensures accurate data transfer regardless of tire position, enhancing maintenance tracking and reducing battery consumption.
Implementation Method 1
where the measuring module detects the variation in pressure in the tire
Implementation Method 2
employing a communication system that activates the RFID tag using waves beyond 100 MHz reflected on the tire's metal structure
Data Source
AI summary
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.