Tire Positioning via Wireless Acceleration Signals
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Solution Overview
Problem
Tire monitoring systems often confuse the positions of front and rear tires due to significant differences in tire wear, leading to potential safety issues during vehicle operation.
Innovation Solution
A tire positioning method and system that uses uniaxial accelerometers and wireless signal transmitters on each tire to transmit acceleration data, allowing a central controlling device with a wireless signal receiver and processor to identify tire positions based on signal intensity and direction, ensuring accurate identification without manual setup or scanning.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If tire monitoring system is implemented to monitor tire conditions, then driving safety is improved, but tire position identification becomes confused due to tire wear differences
Solution Approach 1:
The patent introduces an intermediary identification system consisting of unique identifiers on each tire and a corresponding identification device in the monitoring system. This intermediary layer resolves the confusion by providing explicit position information rather than relying on indirect inference from tire characteristics that change with wear.
Solution Approach 2:
The patent creates a digital copy or representation of tire position information through the identification system. Each tire has a unique identifier that is copied to the monitoring system, allowing accurate tracking of tire positions independent of physical wear changes.
2Stability of the object's composition
If front tires are frequently swapped with rear tires due to wear differences, then tire wear is balanced, but tire monitoring system accuracy deteriorates
Solution Approach 1:
The unique identifier system acts as an intermediary that maintains accurate position tracking even when tires are physically moved. The identification device reads the identifier regardless of tire position, allowing the system to adapt to tire swaps without losing accuracy.
Solution Approach 2:
The system is designed to be dynamic and adaptable to tire position changes. The identification device can recognize and track tires regardless of their position in the vehicle, allowing frequent tire swaps while maintaining monitoring accuracy.
3Measurement precision
If manual tire position setup is required for accurate identification, then position identification precision is improved, but system complexity and operation difficulty increase
Solution Approach 1:
The system performs self-identification by automatically reading the unique identifiers on each tire. No manual configuration or setup is required - the system autonomously identifies and tracks tire positions through the identification device reading the identifiers.
Solution Approach 2:
The unique identifiers are pre-installed on each tire during manufacturing, preparing the tires for automatic identification before they are even mounted on the vehicle. This preliminary action eliminates the need for complex setup procedures.
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 and automatically identifies tire positions, enhancing driving safety by eliminating confusion between front and rear tires, thereby preventing accidents related to tire conditions.
Implementation Method 1
a uniaxial accelerometer disposed at one of four tires of a vehicle for measuring a uniaxial acceleration
Implementation Method 2
a wireless signal transmitter disposed at one of the tires of the vehicle for transmitting a wireless signal, wherein the wireless signal comprises the uniaxial acceleration
Data Source
AI summary
A tire positioning method includes the following steps. Four wireless signals transmitted from four tires of a car are received by a wireless signal receiver. Each wireless signal includes a uniaxial acceleration. One of the tires which is located at a first location is identified according to the intensity of the wireless signals. The first location is the closest to the wireless signal receiver. When the car makes a turn, one of the tires which is located at a second location is identified according to the direction of each uniaxial acceleration. The second location and the first location are both located at one side of the car. The direction of the uniaxial acceleration of the tire which is located at the first location is identical to that of the tire which is at the second location. The side of the car is right side or left side.