Wheel Unit Dynamic RF Power Adjustment for Battery Life
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Solution Overview
Problem
Existing wheel unit systems for transmitting data from vehicle wheels to receivers face high power consumption due to the need for fixed, high RF power levels to ensure reliable data transfer, especially in environments with significant RF shielding, which is inefficient and reduces battery life.
Innovation Solution
The wheel unit dynamically adjusts RF transmission power based on the stored wheel type data, using a processor to determine an optimal RF power value considering factors like rim and tire dimensions and materials, allowing for adaptive power adjustment to match the specific application environment, thereby reducing power consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If fixed high RF power is used for data transmission, then reliable data transfer is achieved, but power consumption increases
Solution Approach 1:
The patent implements dynamic RF power adjustment by having the processor determine optimal RF power values based on stored wheel type data, replacing the fixed high power approach with an adaptive power level that matches actual transmission requirements
Solution Approach 2:
The system changes the RF power parameter dynamically by selecting from multiple power levels based on wheel type characteristics, allowing the transmission power to be optimized for each specific application scenario rather than using a constant high value
2Reliability
If high RF power is used to overcome RF shielding, then data transmission reliability improves, but battery life decreases
Solution Approach 1:
The system dynamically adjusts RF power output based on wheel type data, avoiding continuous high power transmission and thereby extending battery operational life while maintaining reliable data transfer when needed
Solution Approach 2:
The RF power parameter is changed adaptively based on stored wheel type characteristics, allowing the system to use lower power levels for less challenging transmission scenarios and reserve higher power only when necessary, thus extending battery life
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 reduces power consumption and extends battery life by ensuring reliable data transmission with variable RF power that adapts to the actual application environment, particularly after changes such as tire or rim replacements.
Implementation Method 1
a transmitter for RF-transmitting data telegrams to a vehicle-mounted receiver
Data Source
AI summary
A wheel unit for a system for transmitting data from the wheel unit to a receiver of a vehicle. The wheel unit is configured for mounting to a wheel of the vehicle, and the wheel unit includes the following: a memory for storing wheel type data related to the type of the wheel at which the wheel unit is mounted; a processor for processing the wheel type data stored in the memory; a transmitter for RF-transmitting data telegrams to a vehicle-mounted receiver. The processor determines an RF power value based on the stored wheel type data, and the transmitter transmits the data telegrams with an RF power based on the determined RF power value.