Tire Position Detection Using Dual Receiver Signal Intensity
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Solution Overview
Problem
Existing tire pressure monitoring systems require an additional sensor to detect the wheel position of tires, leading to increased costs and failure rates.
Innovation Solution
A tire mount position detection system that automatically detects the wheel position of tires based solely on the receiving state of radio signals transmitted by transmitters mounted on each tire, without the need for additional sensors.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If an additional sensor is added to detect wheel position, then the wheel position detection capability is improved, but the system cost and failure rate increase
Solution Approach 1:
The radio signal receiver is designed to serve multiple functions: it both receives radio signals from tire sensors for pressure monitoring and detects wheel position by analyzing signal characteristics. This multi-functional design eliminates the need for separate position detection sensors, reducing system complexity and failure points while maintaining accurate position detection capability
Solution Approach 2:
The patent combines the wheel position detection function with the existing radio signal receiving system. By merging position detection capabilities into the receiver that already exists for pressure monitoring, the system avoids adding separate sensors, thereby reducing overall system failure rate while achieving accurate wheel position detection
2Measurement precision
If an additional sensor is added to detect wheel position, then the wheel position detection capability is improved, but the system cost increases
Solution Approach 1:
The receiver is designed to perform multiple functions including both pressure data reception and wheel position detection. By making the receiver multi-functional, the system eliminates the need for additional position detection sensors, thereby reducing manufacturing costs while maintaining accurate position detection capability
Solution Approach 2:
The patent merges wheel position detection functionality into the existing radio signal receiver system. This consolidation eliminates the need for separate position detection hardware, reducing component count and manufacturing costs while achieving accurate wheel position detection through signal characteristic analysis
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
The system effectively detects the wheel position of tires, reducing costs and failure rates by eliminating the need for additional sensors, and allowing for automatic detection even during tire rotation.
Implementation Method 1
a sensor including a transmitter of a radio signal (radio wave) is mounted in the tire
Data Source
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AI summary
A tire mount position detection system measures a first signal intensity, which is intensity of a radio signal received by a first receiver (R1), and a second signal intensity, which is intensity of a radio signal received by a second receiver (R2), for each transmitter, and calculates a total value of the first signal intensity and the second signal intensity for each transmitter. The tire mount position detection system detects the wheel position to which a tire having the transmitter is mounted, based on the first signal intensity, the second signal intensity, and the total value of each transmitter.