Dual Energy Detector Module Mount Simplification
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Solution Overview
Problem
Existing dual energy detectors in radiation inspection systems have complex designs, making installation and debugging difficult, are prone to scattering interference, have limited sensitive medium options, and face challenges in matching the radiation beam width with detector arrays, leading to inconvenient use and reduced efficiency.
Innovation Solution
The dual energy detector features juxtaposed higher and lower energy detector arrays on the same mounting plane, with a linear or parallel arrangement, reduced thickness, and the use of heavy metal spacers and filters to enhance sensitivity and reduce scattering, allowing independent irradiation and simplified photodiode and printed circuit board arrangements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If detector modules are oriented towards a radiation source point with fixed orientation, then the detector can acquire radiation signals, but the design becomes complicated and installation and debugging become very difficult
Solution Approach 1:
The detector system is divided into multiple independent detector modules, each capable of acquiring radiation signals autonomously. This segmentation allows each module to be installed and debugged independently, significantly simplifying the overall installation and maintenance process while maintaining reliable signal acquisition capability.
Solution Approach 2:
The detector modules are designed with universal mounting interfaces and standardized signal acquisition mechanisms that can adapt to different radiation source positions. This multi-functionality enables the same module design to be used in various configurations without requiring complex reorientation mechanisms, thereby simplifying installation while ensuring reliable operation.
2Stability of the object's composition
If the detector module mount is made thick to stably install detector modules, then installation stability is improved, but it becomes quite inconvenient in terms of installation and use
Solution Approach 1:
The mounting system is segmented into thin, modular mounting plates with integrated stabilization features. Instead of using a single thick mount, multiple thin mounting plates with precision alignment features are stacked and secured, achieving both stability and thinness. This allows easy installation and removal while maintaining detector module stability.
3Ease of manufacture
If detector modules are arranged with gaps between them, then each module can be independently installed, but the detector at an edge of an edge module is susceptible to scattering interference
Solution Approach 1:
Lead spacers are introduced as intermediary elements between adjacent detector modules. These spacers act as radiation shields that block scattered radiation from reaching edge detectors, while being thin enough to maintain the modular, gap-separated structure for easy installation. The spacers are integrated into the mounting system, providing scattering protection without compromising manufacturing ease.
4Reliability
If the lower energy detector array is used to filter high energy rays, then the filtering function is achieved, but the area of photodiodes on rear side is less than the area of detector array and does not match the sensitive area
Solution Approach 1:
The filtering function is extracted from the lower energy detector array and assigned to a dedicated filter plate positioned in front of the higher energy detector array. This separation allows the lower energy detector array's photodiodes to cover the full sensitive area without being reduced by filtering requirements, while the filter plate provides the necessary high-energy ray filtering independently.
5Reliability
If the radiation beam width exceeds the width of a single detector array, then the radiation beam can be fully detected, but additional radiation protection pressure is required
Solution Approach 1:
The detection system uses multiple detector modules arranged in a linear array, with each module containing detector arrays that collectively cover the full radiation beam width. This segmentation allows complete beam detection across multiple modules while each individual module maintains manageable radiation protection requirements. The modules are positioned adjacent to each other with minimal gaps, ensuring full beam coverage without requiring excessive shielding on any single module.
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
This configuration simplifies installation, reduces scattering interference, expands the selection range for sensitive media, and effectively matches the radiation beam width, enhancing the sensitivity and usability of the dual energy detector in radiation inspection systems.
Implementation Method 1
The lower energy detector array a41 relatively absorbs more energy of low energy rays, and the higher energy detector array a45 relatively absorbs more high energy rays
Implementation Method 2
the detector at an edge of an edge module is susceptible to scattering interference
Implementation Method 3
the lower energy detector array a41, in addition to acquiring the low energy signal, also assumes the filtering function of the higher energy detector array a45 by means of a filter a44
Data Source
AI summary
The present application relates to a dual energy detector and a radiation inspection system. The dual energy detector comprises: a detector module mount and a plurality of detector modules. The detector module includes a higher energy detector array and a lower energy detector array, which are juxtaposedly provided on said detector module mount to be independently irradiated. The present application may simplify the arrangement of the photodiodes and printed circuit boards to which the higher and lower energy detector arrays are connected, such that necessary thickness dimension of the detector module mount is reduced, thereby facilitating the installation and use of the dual energy detector of the present application. On the other hand, the radiation beam in the present application may be independently irradiated to the higher and lower energy detector arrays juxtaposed to each other, which reduces to certain extent the mutual restriction during selection of the higher and lower energy detector arrays.