Tire Sensor Location Mapping Using RFID Tag Association
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current methods for determining the location of tire sensors on a vehicle chassis are prone to human error, require additional hardware, or are limited by power restrictions and sensitivity issues, making it difficult to accurately and efficiently identify sensor positions, especially in assembly line settings.
Innovation Solution
A method and system that utilize Radio Frequency Identification (RFID) tags to establish an association between the RFID tag identity and the tire sensor identity, allowing for indirect determination of tire sensor locations by reading RFID tags as wheels move along an assembly line, thereby eliminating the need for manual activation and reducing hardware requirements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If manual activation method is used to determine tire sensor location, then the tire sensor position can be identified, but human error occurs and the process is time-consuming
Solution Approach 1:
The patent replaces the manual mechanical activation method (hitting the tire with a mallet) with an automated electromagnetic field-based activation system. The LF magnetic field generator automatically activates tire sensors without human intervention, eliminating manual errors and reducing registration time while maintaining location accuracy.
Solution Approach 2:
The tire sensor automatically responds to the LF magnetic field by transmitting its identity and location information through the RF signal. The system self-activates and self-identifies without requiring manual intervention, enabling automated registration at assembly lines.
2Extent of automation
If LF magnetic field activation is used to determine tire sensor location, then automated activation is achieved, but power limits and sensitivity issues restrict its application
Solution Approach 1:
The patent combines both LF magnetic field activation and RF signal transmission in a single system. The LF field provides automated activation capability while the RF signal ensures reliable communication and identity transmission. This multi-functional approach maintains automation benefits while overcoming the limitations of using either method alone.
3Measurement precision
If auto-location method with additional sensors is used, then tire sensor location can be determined, but additional hardware and complex procedures are required
Solution Approach 1:
The patent extracts the location determination function from the complex auto-location system that requires multiple additional sensors. By using the tire sensor's own RF signal transmission in response to LF magnetic field activation, the system determines location without needing speed sensors, accelerometers, or range extenders, significantly reducing hardware complexity.
4Quantity of substance
If manual registration is performed at assembly line, then tire sensor identity can be recorded, but human error and inefficiency occur
Solution Approach 1:
The patent replaces manual information recording with an automated electromagnetic-based identification system. The LF magnetic field activates the tire sensor, which automatically transmits its identity information via RF signal to the central TPMS/THS system, enabling rapid and accurate recording without human intervention.
Solution Approach 2:
The system enables continuous automated registration of tire sensors as they move along the assembly line. The LF magnetic field generator and RF receiver operate continuously to detect and record sensor identities without interruption, significantly improving assembly line productivity compared to manual batch processing.
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 accurate and efficient determination of tire sensor locations on a vehicle chassis, reducing human error and hardware needs, while allowing for automated assembly and improved logistics in tire fitting stations and assembly lines.
Implementation Method 1
Radio Frequency Identification, RFID, sensors, i.e. RFID tags, for enabling identification of the specific tire and/or specific rim of a wheel. RFID also employs RF transmissions.
Implementation Method 2
Another way to activate the tire sensor of the wheel in the specific wheel location is to generate a Low-Frequency, LF, magnetic field in proximity to the tire sensor. In response to receiving the LF magnetic field, the tire sensor may be activated and begin to transmit the RF signal comprising its identity.
Data Source
AI summary
A system and a method for enabling a determination of a location of a tire sensor on a chassis of a vehicle is provided. The method comprises obtaining an identity of a RFID tag located on the rim, or in the tire, of the wheel. The method also comprise obtaining an identity of a tire sensor mounted on the rim, or inside the tire, of the wheel, as the tire sensor is activated. The method further comprise establishing an association between the identity of the RFID tag and the identity of the tire sensor. A computer program product and a carrier are also provided.