Integrated Self-Test Verification Using Fault Simulation Feedback
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing self-test functions in aircraft and electronic systems lack a reliable method to verify their own functionality under real operating conditions, making it difficult to detect and correct malfunctions promptly and accurately.
Innovation Solution
A system with integrated fault simulation, self-test, and verification control units that selectively impair technical functions, monitor operating parameters, and compare warning signals to ensure the self-test function's reliability and accuracy, allowing for comprehensive verification without additional hardware costs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a self-test function is implemented in electronic system components, then the ability to detect malfunctions is improved, but the reliability of the self-test function itself cannot be verified under real operating conditions
Solution Approach 1:
The system enables self-verification of the self-test function by using the system's own components (fault simulation unit, self-test unit, verification control unit) to verify each other's functionality during normal operation, eliminating the need for separate external verification systems
Solution Approach 2:
The verification control unit receives warning signals from the self-test unit, compares them with expected signals, and determines deviations that indicate self-test unit impairment, creating a closed-loop feedback mechanism for continuous verification
2Reliability
If the self-test function is verified only under laboratory conditions, then the verification process is simplified, but the verification does not reflect real operating conditions and may miss unforeseeable malfunctions
Solution Approach 1:
The fault simulation unit is designed to selectively impair technical functions during normal operation, preparing test conditions in advance without requiring separate laboratory testing, thereby verifying the self-test function under realistic operating conditions
Solution Approach 2:
The integrated verification system serves multiple functions: it simulates faults, monitors operating parameters, generates warning signals, and verifies the self-test function all within the same system during normal operation, eliminating the need for separate verification procedures
3Measurement precision
If comprehensive self-test monitoring is implemented, then the detection of operational hardware failures is improved, but the system requires additional hardware components
Solution Approach 1:
The fault simulation unit, self-test unit, and verification control unit are integrated into the existing system architecture, combining multiple verification functions into a unified system that uses shared hardware resources rather than requiring completely separate additional hardware
Data Source
AI summary
A system with a self-test function has at least one system component which has at least one technical function, a fault simulation unit integrated in the system, a self-test unit integrated in the system, and a verification control unit integrated in the system, wherein the at least one system component is coupled to the fault simulation unit, wherein the fault simulation unit is designed to influence the operation of the system component to the effect that the at least one technical function is selectively impaired, wherein the self-test unit is designed to monitor operating parameters of the system component and to respectively generate a warning signal which indicates impairment of the respective at least one technical function, and wherein the verification control unit is designed to compare the warning signals generated by the self-test unit with expected warning signals on the basis of the impaired technical functions.