Multi-View X-Ray Portal With Temporal Beam Interleaving
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Solution Overview
Problem
Existing multi-view X-ray scanning systems face challenges with increased separation between scan lines and reduced spatial resolution due to full interleaving of X-ray beams, which also results in lower throughput of target objects.
Innovation Solution
The implementation of temporal interweaving, where at least two X-ray beams active simultaneously are interleaved with a third X-ray beam, mitigates reduced spatial resolution while maintaining a compact system design.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If full interleaving of two or more X-ray beams is used to avoid cross-talk, then cross-talk interference is reduced, but separation between scan lines increases and spatial resolution deteriorates
Solution Approach 1:
The patent applies periodic action by implementing temporal interleaving where X-ray beams are activated in periodic time slots rather than continuously. Multiple beams are time-multiplexed such that each beam is active during specific time intervals, allowing beams to be closely spaced spatially while avoiding cross-talk through temporal separation. This periodic activation pattern enables reduced scan line separation while maintaining image quality.
2Length of moving object
If full interleaving of X-ray beams is implemented to reduce system length, then physical length of the system is reduced, but throughput of target objects decreases
Solution Approach 1:
The patent implements continuity of useful action by ensuring that while individual X-ray beams are temporally interleaved, the overall inspection process continues without interruption. Multiple beams are prepared and activated in sequence, maintaining continuous scanning coverage of the target object. This allows the system to remain compact while sustaining high throughput by eliminating idle time between beam activations.
3Measurement precision
If temporal interweaving of X-ray beams is used, then spatial resolution is improved and system length is reduced, but complexity of beam coordination increases
Solution Approach 1:
The patent employs feedback mechanisms to manage the complexity of temporal interleaving coordination. The system monitors the activation status and positioning of multiple X-ray beams, using feedback signals to synchronize beam activation timing and adjust for any deviations. This feedback control ensures precise temporal coordination without requiring overly complex mechanical synchronization, thereby managing system complexity while maintaining high spatial resolution.
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 allows for improved spatial resolution and higher throughput of target objects, as it reduces the physical length of the multi-view system while minimizing cross-talk interference.
Implementation Method 1
first, second, and third X-ray source modules mounted at the portal structure with respective offsets... configured to output first, second, and third X-ray beams, respectively, to irradiate the target object
Implementation Method 2
a set of scatter detectors disposed to receive scattered X-rays that are scattered from the target object upon a given X-ray beam irradiating the target object
Data Source
AI summary
A multi-view X-ray inspection portal includes: a portal structure permitting travel of a target object in a travel direction there through. First, second, and third X-ray source modules are mounted at the portal structure with offsets between them, parallel to the travel direction. The X-ray sources output first, second, and third X-ray beams, respectively, to irradiate the target. A set of scatter detectors receives X-rays that are scattered from the target object. The third X-ray source module is disposed between the first and second X-ray source modules parallel to the travel direction. The first and second X-ray beams are simultaneously active and interleaved temporally with the third X-ray beam. In the inspection portal and a corresponding method, the inspection portal may be very compact, while maintaining throughput speed and resolution.