TPM Sensor Adaptive Transmission for Battery Conservation
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Solution Overview
Problem
Tire pressure monitoring systems face inefficiencies in transmission characteristics such as periodicity, content, and length, which are not optimized based on historical operational patterns, leading to suboptimal performance and potential battery conservation issues.
Innovation Solution
A tire pressure monitoring sensor adjusts its transmission characteristics, including periodicity, content, and length, based on its operational history, using a control circuit and sensing devices like accelerometers and temperature sensors to optimize communication with a vehicle control unit, while halting or increasing transmissions based on tire pressure and gravity changes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If transmission periodicity is increased to improve data monitoring frequency, then data accuracy is improved, but battery energy consumption increases
Solution Approach 1:
The patent implements dynamic transmission periodicity adjustment where the sensor adapts its transmission frequency based on operational conditions. The control circuit modifies transmission parameters including periodicity, content, and length according to historical operational patterns, allowing the system to transmit more frequently when needed for data accuracy while reducing frequency during stable conditions to conserve battery energy.
Solution Approach 2:
The system changes transmission parameters (periodicity, content, length) based on operational history and detected patterns. The control circuit selectively determines adjustments to these parameters and applies them to optimize the balance between data monitoring accuracy and energy consumption, transitioning from fixed to adaptive transmission characteristics.
2Loss of information
If transmission content and length are increased to improve data completeness, then information quality is improved, but communication overhead and energy consumption increase
Solution Approach 1:
The patent applies partial action by selectively transmitting only the necessary portion of data based on operational conditions. The control circuit determines adjusted content and length of transmissions by analyzing historical patterns, sending complete data only when necessary while using abbreviated transmissions during normal operation, thus maintaining information quality while reducing communication energy consumption.
3Ease of operation
If fixed transmission periodicity is used to simplify system operation, then ease of operation is improved, but operational efficiency deteriorates
Solution Approach 1:
The sensor system performs self-optimization by automatically adjusting its transmission characteristics based on its own operational history and detected patterns. The control circuit retrieves historical data, determines optimal transmission parameters, and applies adjustments without external intervention, allowing the system to maintain simplicity while improving operational efficiency through adaptive behavior.
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 enhances the operational efficiency and effectiveness of tire pressure monitoring systems by adapting transmission parameters to historical patterns, conserving battery life and improving data accuracy.
Implementation Method 1
the at least one sensing device comprises an accelerometer, and when the tire pressure as measured by the measurement device is zero and the accelerometer indicates a gravity (or changes in gravity) that varies beyond a threshold
Implementation Method 2
These devices might also obtain other information such as the temperature of the air in the tire
Data Source
AI summary
At a control circuit of a TPM sensor, one or more of a first adjustment to the periodicity, a second adjustment to the content, and a third adjustment to the length of a message are determined based upon the operational history of the sensor. The adjustments are applied to the messages and adjusted messages are transmitted.