Tire Parameter Validity Checking Through Change Detection

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Solution Overview

Problem

Existing tire monitoring devices assume tire parameters are valid without verification, leading to potential incorrect results and conclusions if invalid parameters are used.

Innovation Solution

A method and device that detect tire parameters and their associated validity parameters, determining validity by checking for changes in the validity parameter values, ensuring only valid parameters are used for further analysis, with specific considerations during tire changes and within predefined time windows.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If tire parameters are used without validity verification, then device complexity is reduced, but reliability deteriorates due to potential incorrect results

Engineering Contradiction:

Improvevalidity of tire parameterVSAvoidcomplexity of validity check

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The system performs preliminary validity checks by comparing the current validity parameter value with a previously stored validity parameter value before using the tire parameter for further analysis. This preliminary action ensures that only valid tire parameters (those that have changed since the last inspection) are used, thereby improving reliability without requiring complex continuous monitoring during operation.

Inventive Principle:

Principle #10Preliminary action

2Measurement precision

If validity parameter checking is implemented, then measurement precision is improved, but loss of time increases due to additional detection steps

Engineering Contradiction:

Improveaccuracy of tire parameter evaluationVSAvoidtime for validity verification

Core Design Contradiction:

Measurement precisionVSLoss of time

Solution Approach 1:

Instead of performing complex real-time validity verification, the system uses a simplified copying approach by storing and comparing a validity parameter value (which can be a timestamp or inspection marker) against a previously stored copy of this value. This copying mechanism provides accurate validity determination with minimal time loss, as it avoids repeated complex measurements and relies on simple value comparison.

Inventive Principle:

Principle #26Copying

3Productivity

If tire parameters are continuously monitored without validity differentiation, then productivity is maintained, but harmful factors increase due to incorrect conclusions

Engineering Contradiction:

Improvecontinuity of tire monitoringVSAvoidincorrect results and conclusions

Core Design Contradiction:

ProductivityVSObject-generated harmful factors

Solution Approach 1:

The system segments tire parameter data into valid and invalid categories by comparing the current validity parameter value with the previously stored validity parameter value. This segmentation allows the electronic control system to process only valid tire parameters (those indicating a change since last inspection), thereby maintaining continuous monitoring productivity while eliminating harmful incorrect conclusions by filtering out invalid unchanged data.

Inventive Principle:

Principle #1Segmentation

Data Source

PatentUS20230406045A1Method and device for determining a validity of a tire parameter

Publication Date: 2023.12.21 CONTINENTAL AUTOMOTIVE TECHNOLOGIES GMBH

AI summary

A method for determining a validity of a tire parameter of a tire of a vehicle including: detecting the tire parameter, detecting a value of a validity parameter, the validity parameter being a measure of 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.