Tire Parameter Validation for Reliable Tread Depth Estimation
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Solution Overview
Problem
Existing tire monitoring systems often rely on assumed valid tire parameters, which may be incorrect or invalid, leading to potential incorrect results and conclusions if not validated.
Innovation Solution
A method and device that detect and validate tire parameters by using a validity parameter, where a change in the validity parameter's value indicates the parameter's validity, preventing its use in calculations if unchanged, and allowing its use within a predetermined time window after tire changes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If tire parameters are used without validation, then the system operation is simple and fast, but the reliability of tire monitoring results deteriorates due to potential incorrect parameters
Solution Approach 1:
The patent applies preliminary action by validating tire parameters before they are used in monitoring calculations. The control device checks whether a tire parameter (such as reference tread depth) has been updated and is valid before using it to calculate current tread depth. This prevents incorrect parameters from compromising reliability while maintaining a relatively simple validation mechanism that only intervenes when parameter updates occur.
2Reliability
If tire parameters are validated before use, then the reliability of monitoring results is improved, but the system complexity and processing time increase
Solution Approach 1:
The validation system operates autonomously by automatically detecting when tire parameters are updated and validating them without requiring external intervention. The control device monitors for parameter updates, retrieves the updated parameter, validates it according to predetermined criteria, and uses it if valid - all without user involvement. This self-service approach minimizes time loss while ensuring reliability.
3Productivity
If invalid tire parameters are used in calculations, then the calculation process remains simple and continuous, but incorrect results are obtained leading to wrong conclusions
Solution Approach 1:
The patent implements feedback by continuously monitoring whether tire parameters are valid before using them in calculations. The control device checks the validity status of the reference tread depth parameter, and only proceeds with current tread depth calculation if the parameter is confirmed valid. This feedback mechanism ensures measurement precision is maintained while allowing continuous operation - when invalid parameters are detected, the system simply waits for valid parameters without interrupting overall functionality.
Data Source
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AI summary
The invention relates to a method for determining a validity of a tire parameter of a tire (402) of a vehicle (400). The method comprises the following steps: detecting the tire parameter, detecting a value of a validity parameter, the validity parameter being a measure for the validity of the tire parameter, and determining that the detected tire parameter is valid if the detected value of the validity parameter is changed compared to a previous value of the validity parameter.