TPMS Sensor Encoding Procedure Locking for Power and Security
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Solution Overview
Problem
Current tire pressure monitoring systems face issues with sensor interchangeability, high power consumption, and potential counterfeiting, leading to inconvenience for auto repair shops and consumers.
Innovation Solution
A tire pressure monitoring system with a sensor and setter that uses an electrically erasable memory module to store and process encoding procedures, allowing only required procedures to be activated, reducing data processing and power consumption while preventing counterfeiting through encoding procedure locking.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple encoding procedures are stored in the sensor and repeatedly processed, then sensor compatibility across different vehicle types is improved, but power consumption increases and service life decreases
Solution Approach 1:
The encoding procedures are pre-stored in the sensor's memory during manufacturing, eliminating the need for repeated downloads or processing during vehicle operation. This preliminary preparation allows the sensor to quickly switch between different encoding formats without consuming additional power or requiring external equipment.
Solution Approach 2:
The sensor contains multiple encoding procedures stored in its memory, with each procedure optimized for specific vehicle types or regions. The sensor can selectively activate only the required encoding procedure based on local requirements, rather than continuously processing all possible encodings, thus reducing power consumption while maintaining compatibility.
2Adaptability or versatility
If multiple encoding procedures are stored and processed in the sensor, then sensor compatibility is improved, but device complexity and hardware requirements increase
Solution Approach 1:
The sensor is designed with a universal architecture that can handle multiple encoding procedures through software/firmware rather than requiring separate hardware paths for each encoding type. The processing unit can dynamically switch between different encoding formats stored in memory, reducing hardware complexity while maintaining multi-format compatibility.
3Reliability
If no encoding procedure is stored in the sensor and a setter is used for configuration, then sensor security against counterfeiting is improved, but ease of operation and repair convenience deteriorate
Solution Approach 1:
The required encoding procedure is pre-configured in the sensor's memory during manufacturing or before deployment. This preliminary configuration eliminates the need for field programming or connection to external setting equipment, allowing auto repair shops to immediately replace and use sensors without complex configuration steps, thus improving both security and operational convenience.
4Manufacturing precision
If encoding procedures are repeatedly processed every time the motor vehicle is restarted, then data format correctness is ensured, but power consumption increases and processing time is wasted
Solution Approach 1:
The correct encoding procedure is predetermined and pre-loaded into the sensor's memory based on the specific vehicle type or application. This preliminary setup allows the sensor to directly use the pre-selected encoding without repeated processing or validation cycles during vehicle restarts, ensuring data format correctness while minimizing processing time and power consumption.
Data Source
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AI summary
The invention provides a method for setting a sensor for a tire pressure monitoring system in a motor vehicle, wherein a plurality of encoding procedures is stored in advance in the sensor; by sending instructions to the sensor by the setter, all other encoding procedures except the required encoding procedures from a plurality of encoding procedures stored in advance in the sensor are processed, neither able to be encoded nor to be invoked for encoding. The invention provides various selectable encoding procedures for the sensor; during application, data encoded by an encoding procedure is required to be sent out, thus not only solving the problem characterized by large data processing and large power consumption, but also preventing the sensor from being counterfeited by lawbreakers easily. Besides, the invention also provides a sensor and a setter thereof for a tire pressure monitoring system in a motor vehicle applicable to the method.