Electronic Circuit Reliability Prediction Under Dynamic Stress
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The failure rate of electronic components and circuits is difficult to predict accurately due to variations in stress and manufacturing quality, leading to unpredictable lifetimes and potential failures, which existing methods fail to account for dynamic operational conditions.
Innovation Solution
A method involving repeated measurements of operation parameters during circuit operation, using a reliability prediction model to calculate a reliability prediction parameter, incorporating acceleration factors based on temperature and electrical stress, and updating these calculations dynamically to improve prediction accuracy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If manufacturer guarantees are based on worst-case stress scenarios, then reliability guarantee is improved, but prediction accuracy for actual operating conditions deteriorates
Solution Approach 1:
The patent implements dynamic reliability prediction by continuously monitoring operation parameters (temperature, electrical stress) during actual device operation and updating the reliability prediction parameter in real-time. This transforms the static worst-case guarantee into a dynamic assessment that adapts to actual operating conditions, resolving the contradiction between providing reliable guarantees and maintaining prediction accuracy.
Solution Approach 2:
The system establishes a feedback loop where operation parameters are measured, fed into a reliability prediction model, and the resulting reliability prediction parameter is used to adjust maintenance and operational decisions. This closed-loop feedback mechanism enables continuous refinement of reliability predictions based on actual device behavior, improving both guarantee reliability and prediction accuracy simultaneously.
2Measurement precision
If real-time monitoring of operation parameters is implemented, then prediction accuracy is improved, but device complexity increases
Solution Approach 1:
The patent leverages existing multi-functional components within the electronic circuit to perform monitoring duties. The same circuitry that operates the device is utilized to measure operation parameters, and the calculation logic integrates reliability prediction into the existing control functions. This approach enables accurate real-time monitoring without adding separate dedicated monitoring systems, thereby minimizing the increase in device complexity.
Solution Approach 2:
The electronic circuit performs self-monitoring and self-assessment of its own reliability by measuring its own operation parameters and calculating its own reliability prediction parameter. This self-service capability eliminates the need for external monitoring equipment and complex external analysis systems, achieving high prediction accuracy while keeping the overall system complexity manageable.
3Duration of action of stationary object
If manufacturer lifetime guarantees are extended, then customer satisfaction is improved, but cost increases
Solution Approach 1:
The patent enables dynamic adjustment of lifetime predictions based on actual operating conditions. Devices operating under lower stress conditions can achieve extended lifetime predictions, while those under higher stress are identified for earlier maintenance or replacement. This dynamic approach allows manufacturers to offer extended lifetime guarantees selectively based on actual device performance rather than applying uniform conservative estimates to all devices, thereby reducing overall costs while maintaining customer satisfaction.
Solution Approach 2:
The system changes the reliability prediction parameter continuously based on measured operation parameters such as temperature and electrical stress. By tracking how these parameters evolve over time, the system can provide updated lifetime predictions that reflect actual device degradation patterns. This allows for more accurate and potentially extended lifetime guarantees without the need for overly conservative manufacturing standards, as the actual device performance is continuously assessed and reported.
Data Source
AI summary
According to an embodiment, a method is provided, comprising:repeatedly performing a measurement of a plurality of operation parameters of an electronic circuit during operation of the electronic circuit,for each measurement calculating, by the electronic circuit, a reliability prediction parameter of the electronic circuit based on the measurements and a reliability prediction model of the electronic circuit.