Distributed X-ray Source for Mobile Back Scattering Imaging
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Solution Overview
Problem
Conventional mobile X-ray back scattering inspection apparatuses face limitations due to distortion in ray spot dimensions and spatial distribution at large spread angles, requiring increased distance between the ray source and object, which affects spatial coverage and imaging quality, and result in inefficient scanning speeds.
Innovation Solution
A mobile back scattering imaging security inspection apparatus utilizing a distributed X-ray source with multiple target points that emit pencil ray beams simultaneously, controlled by a controller to achieve improved scanning efficiency and imaging quality, and includes distance measuring devices to optimize the number of target points for simultaneous emission based on the object's distance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If a single target source with large spread angle is used, then the imaging range is improved, but the ray spot dimensions and spatial distribution become distorted
Solution Approach 1:
The single target source is segmented into multiple target points arranged in a specific pattern. Each target point emits rays at controlled angles, collectively covering the desired imaging range while maintaining precise ray spot dimensions and spatial distribution without distortion.
2Manufacturing precision
If the distance between the ray source and object is increased to reduce distortion, then the ray spot distortion is reduced, but the spatial coverage of the detector is reduced
Solution Approach 1:
Instead of adjusting only the distance (one dimension), the invention uses multiple target points arranged in a two-dimensional pattern with different angular positions. This allows achieving both low distortion and wide spatial coverage by utilizing angular distribution in addition to spatial arrangement.
3Ease of manufacture
If a wheel-type flying spot scanning mechanism is used, then the pencil ray beam is formed, but the scanning speed is limited
Solution Approach 1:
Multiple target points emit pencil ray beams simultaneously or in rapid succession, eliminating the sequential mechanical scanning of wheel-type mechanisms. This continuous parallel emission maintains the pencil beam advantage while dramatically increasing scanning speed.
4Productivity
If multiple target points emit rays simultaneously, then the scanning speed is improved, but the complexity of the system increases
Solution Approach 1:
Multiple target points are merged into a single distributed source system with unified control. The controller coordinates all target points to emit rays simultaneously, achieving high-speed scanning while managing system complexity through integrated control rather than separate independent 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
This approach enhances imaging quality by reducing distortion and variation in ray spot size, improving scanning speed, and allowing for higher contrast images to be obtained in a single scan operation, while efficiently managing the distance between the detector and object.
Implementation Method 1
a mobile back scattering imaging security inspection apparatus utilizing a distributed X-ray source with multiple target points that emit pencil ray beams simultaneously
Data Source
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AI summary
The present disclosure provides a mobile back scattering imaging security inspection apparatus, comprising: a back scattering scanner (2), a detector (3), a controller (4), and a movable stage (1) configured to carry the back scattering scanner, the detector and the controller and being movable with respect to the object to be inspected; wherein the back scattering scanner is a distributed X-ray source comprising a plurality of target points (201), each of which is able to emit the ray beam individually, and wherein the back scattering scanner, the detector and the controller perform an imaging security inspection operation on the object to be inspected during moving along with the movable stage with respect to the object.