Security Inspection Apparatus with Dynamic Orientation Adjustment
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Solution Overview
Problem
Existing X-ray backscatter security inspection systems face challenges in accurately detecting objects of varying sizes due to fixed scanning angles and positions, leading to potential occlusion and overlap, which hinders the identification of suspicious goods.
Innovation Solution
A security inspection apparatus that detects the size and position of objects and automatically adjusts the orientation of the radiation emitting device, including height and emission angle, to minimize detection dead angles and improve image accuracy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the radiation emitting device uses fixed scanning angles and positions, then the device structure is simple, but detection accuracy deteriorates due to occlusion and overlap of internal structures
Solution Approach 1:
The patent implements dynamic adjustment of the radiation emitting device's orientation and position based on detected object characteristics. The system automatically changes scanning angles and positions according to object size and shape, transforming the fixed device into a dynamic one that adapts to different inspection scenarios, thereby resolving the contradiction between simple structure and high detection accuracy.
Solution Approach 2:
The system changes key operational parameters (scanning angles, positions, orientation) based on detected object parameters. By adjusting these parameters dynamically according to object characteristics, the system achieves high detection accuracy without requiring permanently complex device architecture, thus resolving the technical contradiction.
2Measurement precision
If the radiation emitting device is stationary, then the device complexity is low, but the view angle is poor causing occlusion and overlap between internal structures
Solution Approach 1:
The patent transforms the stationary radiation emitting device into a dynamic one capable of automatic orientation adjustment. By implementing dynamic scanning mechanisms that adapt to object characteristics, the system achieves high-quality view angles without permanently complex device structure, resolving the contradiction between view angle quality and device complexity.
3Reliability
If the scanning angle and position are fixed, then the device operation is simple, but suspicious goods cannot be highly identified due to occlusion
Solution Approach 1:
The system implements self-service operation by automatically detecting object characteristics and adjusting scanning parameters without manual intervention. The automatic adjustment mechanism ensures high identification reliability while maintaining operational simplicity, as the system performs complex adjustments autonomously based on detected object parameters.
Solution Approach 2:
The system automatically changes scanning parameters (angles, positions) based on detected object characteristics, ensuring high identification reliability without requiring complex manual operation. This automated parameter adjustment resolves the contradiction between identification reliability and ease of operation.
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 the detection accuracy by ensuring all areas of the object are scanned effectively, reducing occlusion and overlap, and allowing for real-time adjustments to accommodate objects of different sizes and positions.
Implementation Method 1
a radiation source generates fan-shaped X-rays that pass through a rotating shield with multiple collimating holes to continuously generate a pencil beam
Implementation Method 2
the pencil beam interacts with an inspected object to form a flying spot through Compton scattering
Implementation Method 3
A back-scatter detector collects X-ray backscatter rays of the flying spot at any time, and after processing, information of the material is obtained
Data Source
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AI summary
The present invention proposes a security inspection apparatus and method, relates to the technical field of radiation, wherein the security inspection apparatus of the invention comprises: radiation emitting device, back-scatter detector, size-distance detecting device, orientation adjusting device; the back-scatter detector located between the radiation emitting device and an inspected object; the size-distance detecting device located between the radiation emitting device and the inspected object, for detecting a size of the inspected object and/or a distance between the inspected object and the size-distance detecting device; and the orientation adjusting device adjusts orientation of the radiation emitting device according to the size of the inspected object and/or the distance from the inspected object. Such a security inspection apparatus can detect size and position information of the inspected object, and automatically adjust the position of the radiation emitting device according to the size and position of the inspected object, thereby reducing or avoiding detection dead angles, and improving accuracy of the detection.