Tire Pressure Module Same-Frequency Bidirectional RF Communication
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Solution Overview
Problem
Current Tire Pressure Monitoring Systems (TPMS) face inefficiencies due to the need for multiple Low-Frequency (LF) initializers, complex signal propagation, and limited battery life, which increases costs and reduces the operational efficiency of pressure modules.
Innovation Solution
Implementing a communication system between pressure and transceiver modules in the same radio frequency band for bidirectional communication, allowing for efficient transmission and reception of tire pressure information, and using a control module to determine optimal measurement times based on vehicle movement, reducing the number of transceivers needed and extending battery life.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple LF-initializers are used for initialization of each sensor, then the initialization coverage is improved, but the system cost and complexity increase
Solution Approach 1:
The patent combines the initialization function with the existing RF transceiver system by using the same RF channel for both initialization commands and pressure data transmission. This eliminates the need for separate LF-initializers at each wheel, reducing component count while maintaining initialization capability across all sensors.
Solution Approach 2:
The RF transceiver system is designed to perform multiple functions: it serves both for initialization of pressure sensors and for ongoing pressure data transmission. This multi-functional approach replaces dedicated LF-initializers with a universal RF-based system that handles both tasks.
2Measurement precision
If LF-initializers are mounted in each wheel housing, then the initialization precision is improved, but the manufacturing cost increases
Solution Approach 1:
The initialization function is extracted from the wheel housing structure and integrated into the central control unit's RF transceiver system. This eliminates the need to manufacture and install separate LF-initializer components in each wheel, simplifying the manufacturing process while maintaining initialization precision through RF signal targeting.
3Duration of action of moving object
If a large battery is used to extend operational life, then the duration of action is improved, but the module size and cost increase
Solution Approach 1:
The pressure sensor operates in periodic measurement cycles rather than continuous operation. The system measures pressure at intervals and remains in low-power state between measurements, significantly extending battery life while keeping the battery size small enough to fit in the tire.
Solution Approach 2:
The system uses the vehicle's motion and existing RF communication infrastructure to trigger measurements and transmit data. The periodic activation is self-regulated based on vehicle usage patterns, eliminating the need for large backup power sources.
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 reliability and efficiency of tire pressure monitoring, reduces energy consumption, and allows for smaller, more cost-effective pressure modules with extended operational life.
Implementation Method 1
The transceiver is configured to wirelessly transmit and receive in the same frequency band
Data Source
AI summary
Embodiments may provide a pressure module, a transceiver module, a control module, methods and computer programs for providing information related to a tire pressure. The pressure module is configured to provide information related to a pressure of a tire in a vehicle, comprises a pressure determiner configured to determine the information related to the pressure of the tire, and further comprises a transceiver configured to wirelessly receive information related to an instruction to provide the information related to the pressure of the tire and to wirelessly transmit the information related to the tire pressure. The transceiver is configured to wirelessly transmit and receive in the same frequency band. The transceiver module is configured to wirelessly transmit information related to an instruction to provide information related to a pressure of a tire to the tire pressure module and to wirelessly receive the information related to the tire pressure.