Scanning Camera System Radiation Hardening
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Solution Overview
Problem
Current visual inspection systems for nuclear energy applications are limited by their radiation hardness, requiring heavy shielding and being cumbersome, and they lack high-definition capabilities, making them inadequate for accurate inspections in high-radiation environments such as nuclear reactors and accident conditions.
Innovation Solution
A scanning camera system using radiation-hardened components like hollow-core Photonic Crystal Fiber optics and MEMS mirrors, along with avalanche photodiodes, is developed to mitigate radiation-induced noise and maintain image quality in high-radiation environments, allowing for more maneuverable and high-definition imaging.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If heavy lead shielding is used to achieve radiation hardness, then radiation resistance is improved, but weight increases and maneuverability deteriorates
Solution Approach 1:
The patent replaces the mechanical/physical shielding approach (lead shielding) with a fundamentally different technical approach: using radiation-hardened electronic components and sensors that can operate directly in high-radiation environments without requiring heavy protective enclosures. This substitution of the protection mechanism enables the system to achieve radiation hardness while maintaining light weight and maneuverability.
2Reliability
If vidicon tubes are used to achieve radiation hardness, then radiation resistance is improved, but image resolution deteriorates
Solution Approach 1:
The patent changes the fundamental parameters of the imaging system by transitioning from analog vidicon tube technology to digital sensor technology. Specifically, it employs modern radiation-hardened CMOS or CCD sensors with significantly higher pixel counts (e.g., 1920x1080 or higher resolution) and enhanced radiation tolerance through specialized manufacturing processes and materials, thereby achieving both high resolution and radiation resistance simultaneously.
Solution Approach 2:
The patent utilizes composite material structures in the sensor design, combining radiation-hardened semiconductor materials with protective coatings and specialized substrate materials that provide both radiation resistance and maintain optical performance for high-definition imaging.
3Reliability
If industrial video systems are used to withstand radiation, then radiation resistance is improved, but operational duration deteriorates
Solution Approach 1:
The patent changes the operational parameters by using sensors with higher radiation tolerance ratings (e.g., capable of withstanding 1000 Gy or more cumulative dose) and implementing radiation mitigation techniques such as error correction algorithms, frame averaging, and real-time quality monitoring that extend operational duration in high-radiation environments beyond the limitations of earlier industrial video systems.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The system achieves minimal degradation in high-radiation environments, providing improved image quality and maneuverability, capable of withstanding doses beyond 200 MGy, enabling long-term monitoring and inspection in nuclear power plants and accident conditions.
Implementation Method 1
hollow-core Photonic Crystal Fiber optics
Implementation Method 2
hollow-core Photonic Crystal Fiber optics
Implementation Method 3
MEMS mirrors
Implementation Method 4
MEMS mirrors
Implementation Method 5
avalanche photodiodes
Implementation Method 6
avalanche photodiodes
Data Source
AI summary
Articles of manufacture, machines, processes for using the articles and machines, processes for making the articles and machines, and products produced by the process of making, along with necessary intermediates, directed to a scanning camera system.