Electronic Wheel Device for Real-Time Tire Pressure Monitoring
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Solution Overview
Problem
Existing tire pressure monitoring systems fail to provide real-time monitoring over the required 10-year lifespan without a trigger transmitter, and they cannot immediately notify drivers of tire issues when the vehicle is stationary, due to high energy consumption and battery life span limitations.
Innovation Solution
The method involves an electronic wheel device that transmits tire pressure data via radio in short intervals only when the vehicle is stationary and outside a prespecified normal range, using a system monitoring signal with a short transmission duration to conserve energy, and divides functions to optimize energy consumption for both system monitoring and pressure measurement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the electronic wheel device transmits tire pressure data continuously when the vehicle is stationary, then real-time monitoring capability is improved, but energy consumption increases and battery life span decreases
Solution Approach 1:
The system transmits tire pressure data periodically in short intervals (e.g., every few seconds) rather than continuously, which reduces energy consumption while maintaining real-time monitoring capability. The transmission occurs at defined time intervals during stationary periods, balancing monitoring reliability with battery conservation.
Solution Approach 2:
The transmission behavior dynamically adapts based on vehicle state (moving vs. stationary) and pressure conditions (normal vs. abnormal). When the vehicle is moving, transmission follows one pattern; when stationary, transmission occurs only if pressure is outside the normal range, optimizing energy usage while maintaining monitoring effectiveness.
2Use of energy by moving object
If the electronic wheel device transmits only when triggered by a trigger transmitter, then energy consumption is reduced, but immediate notification capability when the vehicle is stationary is lost
Solution Approach 1:
The electronic wheel device autonomously determines when to transmit data based on internal pressure measurements and vehicle state detection, without requiring external trigger signals. This self-service capability enables immediate notification of pressure issues during stationary periods while maintaining energy efficiency through selective transmission.
Solution Approach 2:
The system performs preliminary checks of tire pressure and vehicle state before deciding to transmit, allowing it to prepare and send notifications immediately when conditions warrant (stationary + abnormal pressure) without waiting for external triggers, thus maintaining both energy efficiency and immediate notification capability.
3Measurement precision
If the transmission interval is shortened to improve real-time monitoring, then monitoring accuracy is improved, but battery life span decreases
Solution Approach 1:
The transmission interval quality varies locally based on operational context: shorter intervals are used when the vehicle is stationary and pressure is abnormal (high monitoring need), while longer intervals or no transmission occur when the vehicle is moving or pressure is normal (lower monitoring need), optimizing the balance between accuracy and battery life.
Solution Approach 2:
The system changes the transmission interval parameter dynamically based on vehicle state and pressure conditions. During stationary periods with abnormal pressure, intervals are shortened for higher accuracy; during normal operation or movement, intervals are extended to conserve battery, achieving both monitoring precision and extended battery life span.
4Reliability
If a trigger transmitter is added to enable stationary monitoring, then immediate notification capability is improved, but device complexity and cost increase
Solution Approach 1:
The trigger transmitter function is extracted and eliminated from the system. Instead of requiring an external trigger device, the electronic wheel device itself performs the triggering function by autonomously detecting vehicle state and pressure conditions, thereby simplifying the overall system while maintaining immediate notification capability.
Solution Approach 2:
The electronic wheel device is designed to perform multiple functions: it monitors tire pressure, detects vehicle movement state, determines when transmission is necessary, and initiates transmission autonomously. This multi-functionality eliminates the need for separate trigger transmitters and other auxiliary devices, reducing system complexity while maintaining full monitoring capability.
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 allows for real-time tire pressure monitoring with reduced energy consumption, enabling immediate notification of tire issues upon vehicle start-up and extending battery life, while maintaining system functionality and accuracy over the required period.
Implementation Method 1
a pressure sensor arranged in the tire is transmitted in brief transmission intervals by an electronic wheel device
Implementation Method 2
transmitted in brief transmission intervals by an electronic wheel device, via radio
Data Source
AI summary
A method is provided for real-time monitoring of tire pressure, wherein the pressure value determined by use of a pressure sensor in the tire is transmitted by an electronic wheel device, without the use of a trigger transmitter fixed on the vehicle, by radio, in short transmission intervals, to a monitoring device installed in the vehicle, only if, at least when the vehicle is not moving, the value is outside a prespecified normal range. When the vehicle is not moving, the electronic wheel device transmits a signal suitable for a system monitoring function, at certain time intervals and, using the same time frame or a whole-number fraction or multiple thereof, carries out a measurement of the tire pressure. The signal has a short transmission duration on the order of 25 μs to 500 μs.