Semiconductor Lifetime Prediction Circuit for Fault Notification
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing semiconductor devices lack effective methods to predict and prevent faults, particularly in critical systems like in-vehicle electronics, where sudden failures can lead to safety issues due to inadequate detection and notification of impending device failure.
Innovation Solution
A semiconductor device with a lifetime prediction circuit that monitors the deterioration of functional units and notifies users before reaching a predetermined threshold, allowing for proactive replacement and preventing system failures.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a lock-step scheme with multiple processor cores is used to detect faults, then the reliability of the system is improved, but the device complexity increases and sudden stopping may cause new troubles
Solution Approach 1:
The lifetime prediction circuit performs preliminary monitoring of deterioration degrees before actual faults occur. By continuously acquiring deterioration degrees from functional units and comparing them against thresholds, the system predicts potential failures in advance, allowing for proactive replacement without needing complex real-time fault detection mechanisms during operation.
Solution Approach 2:
The lifetime prediction circuit acts as an intermediary between the functional units and the control system. Instead of directly monitoring complex operational parameters or implementing complex fault detection algorithms, the circuit uses a simplified intermediary mechanism that monitors deterioration degrees and triggers notifications when thresholds are exceeded, bridging the gap between physical degradation and control responses.
2Reliability
If the semiconductor device stops operation upon detecting a fault, then the reliability is improved by preventing further damage, but the productivity decreases due to unexpected interruptions
Solution Approach 1:
The system performs preliminary monitoring and prediction of device lifetime through the lifetime prediction circuit. By continuously acquiring deterioration degrees and comparing them against predetermined thresholds, the system identifies potential failures before they occur, enabling planned maintenance and replacement activities that do not interrupt normal operations.
Solution Approach 2:
The lifetime prediction circuit implements a feedback mechanism where deterioration degree information is continuously monitored and fed back to the control system. When the deterioration degree exceeds a threshold, the circuit outputs a signal that triggers a notification, creating a closed-loop system that enables proactive response without sudden interruptions.
3Reliability
If continuous monitoring of deterioration degree is implemented, then the reliability is improved by enabling early fault detection, but the use of energy increases
Solution Approach 1:
The lifetime prediction circuit implements partial monitoring by focusing only on critical functional units and their deterioration degrees rather than continuously monitoring all system parameters. The circuit acquires deterioration degrees from functional units selectively and compares them against thresholds only when necessary, reducing overall energy consumption while maintaining effective fault prediction capability.
Data Source
AI summary
The disclosed invention can provide a semiconductor device, a lifetime prediction system, and a lifetime prediction method enabling it to notify a user that a semiconductor device is likely to become faulty, before the semiconductor device becomes faulty. A semiconductor device includes functional units and a lifetime prediction circuit. The lifetime prediction circuit acquires a deterioration degree indicating a degree of how each functional unit deteriorates, using a signal that is output from each functional unit. The lifetime prediction circuit executes processing to make a notification that the semiconductor device is close to its lifetime, if the deterioration degree is more than a first threshold.