Multi-Row Crystal Radiation Detector for Band-Resolved Imaging
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Solution Overview
Problem
Existing radiation detectors in X-ray security inspection devices face challenges in optimizing detection signal clarity and radiation resolution across different frequency bands, leading to suboptimal detection sensitivity and response speed.
Innovation Solution
A detector design featuring multiple rows of detector crystal layers, each layer optimized for specific wave bands with varying thicknesses and materials, allowing for sequential detection and enhanced signal integration to improve signal-to-noise ratio and imaging clarity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a single row of detector crystal layers is used, then the device complexity is low, but the detection sensitivity and signal-to-noise ratio are insufficient
Solution Approach 1:
The detector is divided into multiple rows of detector crystal layers, with each row independently detecting radiation signals. This segmentation allows for increased detection sensitivity through signal combination while maintaining manageable structural complexity through modular design
Solution Approach 2:
Multiple rows of detector crystal layers are combined to detect the same radiation signal simultaneously, and their detection results are integrated through addition or weighted summation. This merging approach enhances the signal-to-noise ratio and detection sensitivity while the modular structure keeps the overall system complexity controlled
2Measurement precision
If uniform thickness crystal layers are used across all rows, then the manufacturing precision is high, but the radiation resolution ability across different frequency bands is suboptimal
Solution Approach 1:
Different rows of detector crystal layers are assigned different thicknesses according to their specific detection needs for different frequency bands. This local quality approach optimizes radiation resolution for each band while the standardized manufacturing processes maintain sufficient thickness consistency within each row
Solution Approach 2:
The thickness parameter of detector crystal layers is varied across different rows to optimize detection performance for different frequency bands. By adjusting this key parameter, the system achieves superior radiation resolution across the spectrum while using conventional manufacturing tolerances
3Measurement precision
If multiple rows of detector crystal layers with different thicknesses are used, then the radiation resolution ability is optimized, but the device complexity increases
Solution Approach 1:
The detector is segmented into multiple rows with independently optimized crystal layer thicknesses for different frequency bands. This segmentation enables tailored radiation resolution for each band while the modular architecture prevents exponential growth in overall system complexity
Solution Approach 2:
Multiple rows of detector crystal layers serve universal detection functions across different frequency bands simultaneously. Each row is optimized for specific bands but all rows work together in a unified detection system, achieving multi-functionality without proportionally increasing structural complexity
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 detector enhances detection sensitivity and response speed by improving signal clarity and accuracy, particularly for difficult-to-penetrate substances, while broadening the detectable radiation band and reducing noise, thus increasing the recognition rate of foreign objects.
Implementation Method 1
The detector crystal receives the radiation transmitted through or reflected by an inspected object, and converts the received radiation into an optical signal of visible light or a required wave band
Data Source
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AI summary
A detector (200) for detecting radiation, and an imaging device comprising the detector (200). The detector (200) comprises multiple rows of detector crystal layers, the multiple rows of detector crystal layers being used for sequentially detecting the same radiation signal and synthesizing some of radiation signals respectively detected by the multiple rows of detector crystal layers to analyze the characteristics of the radiation signals. The multiple rows of detector crystal layers comprise at least a first row of detector crystal layers and a second row of detector crystal layers. At least the first row of detector crystal layers and the second row of detector crystal layers respectively comprise a first crystal layer (E1) and a second crystal layer (E2), and the layer thicknesses of the first row of detector crystal layers and the second row of detector crystal layers are set such that the total layer thickness of one of the first crystal layer (E1) and the second crystal layer (E2) capable of detecting radiation in a band of interest is greater than the total layer thickness of the other one.