Image Sensor Power Voltage Flagging for Fault Detection
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Solution Overview
Problem
Imaging devices face challenges in detecting issues related to power supply voltage fluctuations, which can lead to malfunctions and require external notification or operational adjustments.
Innovation Solution
An imaging device configuration that generates and compares power supply voltage data with reference data to produce a flag signal, allowing for the detection of voltage deviations and triggering notifications or operational changes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If power supply voltage is monitored using external devices or complex circuits, then detection accuracy is improved, but device complexity increases
Solution Approach 1:
The imaging device integrates multiple functions including imaging, power supply voltage monitoring, and anomaly detection within a single device. The power supply voltage monitoring function utilizes existing internal circuitry (ADC, capacitor voltage measurements) to perform voltage detection without requiring separate external monitoring devices, thereby maintaining detection accuracy while reducing overall system complexity.
Solution Approach 2:
The imaging device monitors its own power supply voltage using its internal resources. The device captures images under different power supply conditions, and the processing device analyzes these images to detect anomalies related to power supply voltage fluctuations. This self-monitoring capability eliminates the need for external monitoring equipment while maintaining accurate detection of power supply issues.
2Reliability
If real-time power supply voltage monitoring is implemented, then reliability is improved, but use of energy increases
Solution Approach 1:
Instead of continuous real-time monitoring, the device performs power supply voltage monitoring periodically by capturing images under different power supply conditions at specific intervals. The processing device then analyzes these captured images to detect anomalies. This periodic approach maintains reliability by detecting power supply issues when they occur during imaging operations while significantly reducing energy consumption compared to continuous monitoring.
Solution Approach 2:
The system implements feedback by analyzing captured images to detect anomalies related to power supply voltage fluctuations. When anomalies are detected, the system can trigger notifications or operational adjustments. This feedback mechanism ensures reliability by detecting power supply issues when they actually occur during imaging operations rather than requiring constant monitoring, thereby reducing energy consumption while maintaining system reliability.
3Reliability
If power supply voltage anomalies are detected and notifications are sent, then reliability is improved, but loss of time increases due to operational interruptions
Solution Approach 1:
The device captures images under different power supply conditions in advance during normal imaging operations. The processing device then analyzes these pre-captured images to detect anomalies related to power supply voltage fluctuations. By performing detection based on already-captured images rather than requiring real-time analysis during voltage fluctuations, the system maintains high detection reliability while minimizing operational interruptions and time loss.
Data Source
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AI summary
An imaging device according to the present disclosure includes: an imaging unit configured to perform an imaging operation; a data generator configured to generate first power supply voltage data corresponding to a first power supply voltage; and a flag generation section configured to generate a flag signal for the first power supply voltage by comparing the first power supply voltage data and first reference data. The first power supply voltage is supplied to the imaging unit.