Self-Diagnosis Apparatus for Vehicle Information Output Units
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Solution Overview
Problem
Existing information output systems in vehicles and structures lack a reliable self-diagnosis mechanism to detect abnormalities in information output units before they fail, potentially leading to unnoticed issues that could impact user safety and system reliability.
Innovation Solution
A self-diagnosis apparatus and system that compares self-diagnosis information with detection information from information output units, using a control unit, detection units, and a drive unit to determine if the information output units are functioning correctly, and alerts users or external systems of any abnormalities for timely repair.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If no self-diagnosis mechanism is implemented, then the system remains simple and cost-effective, but abnormalities in information output units cannot be detected before failure
Solution Approach 1:
The self-diagnosis apparatus performs preliminary detection of abnormalities in information output units before they fail. The control unit outputs self-diagnosis information to the information output unit, and the detection unit detects output information to compare with expected output, enabling proactive identification of issues before they impact system reliability.
Solution Approach 2:
The system implements self-service through automatic self-diagnosis functionality. The control unit automatically generates test signals and the detection unit automatically monitors output information, allowing the system to diagnose its own components without external intervention, thus improving reliability while maintaining simplicity.
2Reliability
If self-diagnosis functionality is added to detect abnormalities early, then system reliability improves, but the device complexity increases due to additional control and detection units
Solution Approach 1:
The detection unit serves multiple functions: it detects output information during normal operation and detects output information during self-diagnosis mode. The control unit also performs dual roles by controlling normal operation and generating self-diagnosis test signals. This multi-functionality reduces the need for separate dedicated components, thereby limiting the increase in device complexity while maintaining improved reliability.
3Reliability
If continuous monitoring of information output units is implemented, then abnormalities can be detected promptly, but energy consumption increases
Solution Approach 1:
Instead of continuous monitoring, the system implements periodic self-diagnosis at predetermined intervals. The control unit outputs self-diagnosis information and the detection unit performs detection at scheduled times, allowing the system to maintain reliability through regular checks while conserving energy by avoiding constant monitoring operations.
Data Source
AI summary
A self-diagnosis apparatus has: a self-diagnosis control unit that outputs a predetermined self-diagnosis information to an information output unit; an information detection unit that detects output information outputted from the information output unit in accordance with the self-diagnosis information, and outputs a result of the detection as detection information; and abnormality judgment unit that compares the self-diagnosis information and the detection information during a predetermined synchronization window period, and in a case where difference information of a result of the comparison exceeds a predetermined range information, judges that there is abnormality in the information output unit and outputs abnormality information.