Wheel-Enveloping RF Shielding for Accurate Tire Sensor Pairing
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Solution Overview
Problem
Existing tire sensor pairing systems face challenges in noisy environments, such as tire fitting centers, where multiple transmitting tire sensors interfere with each other, making it difficult to accurately pair tire sensors with their corresponding RFID tags.
Innovation Solution
A tire sensor pairing system featuring an RF shielding construction that envelops the wheel, using a conductive metal mesh to block external RF signals and allow only signals from mounted tire sensors to be received, combined with RF signal receivers and a processing unit for database pairing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If RF signal receivers are used to receive signals from tire sensors in a noisy environment with multiple transmitting sensors, then sensor pairing capability is enabled, but signal interference and pairing accuracy deteriorate
Solution Approach 1:
The system divides the pairing process into two distinct phases: a pairing mode where only one sensor transmits at a time under RF shielding, and a normal monitoring mode where multiple sensors transmit simultaneously. This segmentation eliminates interference during the critical pairing phase while maintaining full functionality during normal operation.
Solution Approach 2:
RF shielding construction acts as an intermediary that creates an isolated electromagnetic environment. The shielding blocks external RF signals and prevents signals from unpaired sensors from interfering with the pairing process, allowing accurate reception of the target sensor's signals.
2Measurement precision
If RF shielding construction is implemented to block external RF signals, then signal reception accuracy is improved, but device complexity increases
Solution Approach 1:
The RF shielding is implemented as a flexible mesh or screen structure that can envelop the wheel and sensors. This approach provides effective RF blocking while maintaining a relatively simple and adaptable form factor that can be integrated into the tire fitting environment without requiring complex rigid enclosures.
3Productivity
If pairing process is performed in a tire fitting center with multiple active sensors, then workflow efficiency is maintained, but signal interference increases making pairing difficult
Solution Approach 1:
The system applies preliminary anti-action by implementing RF shielding and pairing mode activation before the actual pairing occurs. This preemptive measure blocks potential interference from other sensors before they can affect the pairing process, allowing the workflow to proceed efficiently without retries or errors.
Solution Approach 2:
The system uses periodic action by activating pairing mode temporarily during the pairing process, where only the target sensor is allowed to transmit. This time-based separation ensures that even in a busy fitting center with multiple sensors, each sensor can be paired accurately during its designated transmission window without interference from others.
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
Ensures unambiguous pairing of tire sensors by blocking external interference, allowing accurate association of tire sensors with RFID tags during inflation, even in noisy conditions.
Implementation Method 1
an Radio Frequency, RF, shielding construction arranged to envelope the wheel and one or more RF signal receivers, thereby shielding the one or more RF signal receivers from RF signals originating from outside of the RF shielding construction
Data Source
AI summary
A tire sensor pairing system for tire sensors mounted in a tire or on a rim of a wheel for a vehicle is provided. The tire sensor pairing system comprising an Radio Frequency, RF, shielding construction arranged to envelope the wheel and one or more RF signal receivers, thereby shielding the one or more RF signal receivers from RF signals originating from outside of the RF shielding construction and enabling the one or more RF signal receivers to solely receive RF signals from tire sensors mounted in the tire or on the rim of the wheel.