Self-Test Verification Using Integrated Fault Simulation
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Solution Overview
Problem
Existing self-checking systems for electronic components in vehicles, such as airplanes, are limited by unforeseen conditions and lack a reliable method for verifying their own functionality, making it difficult to detect malfunctions and ensure operational safety.
Innovation Solution
A system with a self-checking function that includes an error simulation unit to selectively impair technical functions, a self-testing unit to monitor operating parameters, and a verification control unit to compare generated warning signals with expected signals, allowing for reliable verification of the self-testing unit's functionality and detection of potential malfunctions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If verification of self-test function is performed under laboratory conditions, then testing capability is improved, but the system lacks the ability to verify self-test functionality during actual operation
Solution Approach 1:
The fault simulation unit and self-test unit are designed with multi-functionality to operate in both laboratory and operational environments. The fault simulation unit can selectively impair technical functions regardless of whether the system is in the lab or deployed, allowing the same self-test verification mechanism to function across different operational contexts. This universal design enables consistent verification capability across varying conditions.
2Reliability
If extensive electronic equipment is equipped with self-test functions, then safety monitoring is improved, but system complexity and hardware requirements increase
Solution Approach 1:
The fault simulation unit, self-test unit, and verification control unit are merged into an integrated verification system that can be implemented within existing electronic system components. Rather than adding completely separate testing equipment, the solution combines multiple functions into a unified architecture that leverages existing system resources. This merging approach reduces overall hardware requirements while maintaining comprehensive safety monitoring capability.
Data Source
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Figure 2b~3
Figure 4a~4b
AI summary
A system with a self-testing function is proposed, comprising at least one system component possessing at least one technical function, a fault simulation unit integrated into the system, a self-testing unit integrated into the system, and a verification control unit integrated into the system, wherein the at least one system component is coupled to the fault simulation unit, wherein the fault simulation unit is configured to influence the operation of the system component in such a way that the at least one technical function is selectively impaired, wherein the self-testing unit is configured to monitor operating parameters of the system component and to generate a warning signal indicating an impairment of the respective at least one technical function, and wherein the verification control unit is configured toto compare the warning signals generated by the self-test unit with expected warning signals depending on the impaired technical functions.