Integrated Circuit Heater Failure Detection System
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Solution Overview
Problem
Integrated circuit components, particularly heaters used in aerospace applications, face challenges in failure detection at extreme temperatures, as existing solutions lack effective monitoring mechanisms for failure modes.
Innovation Solution
A method and system for detecting component failure in integrated circuits by determining actual current and condition outputs, comparing them to fixed references, and outputting component failed state signals based on these comparisons, utilizing sensors and a logic module with comparators and amplifiers to differentiate between heater on and off failure states.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a controllable heater is placed locally on a printed circuit board to solve cold temperature related integrated circuit problems, then the integrated circuit can operate properly at extreme cold temperatures, but the heater failure modes become undetectable without specific monitoring circuitry
Solution Approach 1:
The heater component is designed to serve dual functions: its primary heating function and a secondary self-diagnostics function. By incorporating self-diagnostics circuitry within the heater component itself, the system achieves failure detection capability without requiring separate external monitoring circuits, thus maintaining reliability while avoiding increased device complexity
Solution Approach 2:
The heater component performs self-diagnostics by monitoring its own operational parameters (current draw, resistance, temperature). The self-diagnostics circuitry continuously checks for failure conditions and generates appropriate failure signals, enabling the component to detect and report its own failures without external assistance
2Device complexity
If traditional heater solutions are used without specific monitoring circuitry, then the device complexity is reduced, but the failure modes of the heater become undetectable
Solution Approach 1:
The heater component integrates multiple functions including heating, self-diagnostics, and failure detection. By combining these functions into a single multi-functional component, the system achieves comprehensive failure detection capability without requiring separate external monitoring circuits
Solution Approach 2:
The self-diagnostics circuitry continuously monitors the heater's operational parameters and provides feedback about its health status. When failure conditions are detected (such as abnormal current draw or resistance changes), the circuitry generates appropriate failure signals to indicate the heater's status, enabling continuous monitoring without complex external circuitry
Data Source
AI summary
In accordance with at least one aspect of this disclosure, a failure detection system for an integrated circuit component includes an integrated circuit component configured to connect to a circuit board, a first sensor operatively connected to sense and output a signal indicative of an actual current output of the component in a first state, and a second sensor operatively connected to sense and output a signal indicative of an actual condition of the component in the first state. A logic module can be configured to output a component failed state signal based at least in part on the signal indicative of the actual current output of the component in the first state and the signal indicative of the actual condition of the component in the first state.