Radiation-Based Weight Estimation in Security Inspection
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Solution Overview
Problem
Existing security inspection systems require cumbersome and costly weighing hardware to estimate the weight of objects, which complicates the inspection process and increases costs.
Innovation Solution
A method and device using dual-energy or single-energy radiation scanning to estimate the weight of objects by creating a mass-thickness attenuation curve with calibration material blocks, allowing for accurate weight calculation without traditional weighing hardware, by interpolating mass-thickness values from grayscale feature values and pixel areas.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If weighing hardware (such as weighing sensor, electronic scale, or weighbridge) is incorporated into the inspection system to acquire weight of objects, then weight measurement capability is improved, but system complexity and cost increase
Solution Approach 1:
The patent replaces mechanical weighing hardware with a radiation-based measurement system. The inspection system uses radiation scanning to obtain attenuation data, which is then processed to calculate weight information, substituting mechanical weighing sensors and scales with a non-contact radiation measurement approach.
Solution Approach 2:
The radiation inspection system performs multiple functions simultaneously: it acquires both imaging data and weight information using the same radiation scanning mechanism. This multi-functionality eliminates the need for separate weighing hardware, reducing system complexity while maintaining measurement capabilities.
2Measurement precision
If weighing hardware is incorporated into the inspection system to acquire weight of objects, then weight measurement capability is improved, but system cost increases
Solution Approach 1:
The radiation inspection system performs multiple functions simultaneously: it acquires both imaging data and weight information using the same radiation scanning mechanism. This multi-functionality eliminates the need for separate weighing hardware, reducing system cost while maintaining measurement capabilities.
Solution Approach 2:
The patent replaces mechanical weighing hardware with a radiation-based measurement system. The inspection system uses radiation scanning to obtain attenuation data, which is then processed to calculate weight information, substituting mechanical weighing sensors and scales with a non-contact radiation measurement approach.
3Measurement precision
If traditional weighing hardware is used to measure object weight, then weight information is acquired, but inspection efficiency decreases due to complex and cumbersome system structure
Solution Approach 1:
The radiation inspection system performs multiple functions simultaneously: it acquires both imaging data and weight information using the same radiation scanning mechanism. This multi-functionality eliminates the need for separate weighing hardware, reducing system cost while maintaining measurement capabilities.
Solution Approach 2:
The patent replaces mechanical weighing hardware with a radiation-based measurement system. The inspection system uses radiation scanning to obtain attenuation data, which is then processed to calculate weight information, substituting mechanical weighing sensors and scales with a non-contact radiation measurement approach.
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
Simplifies the inspection system structure while providing accurate weight information, eliminating the need for conventional weighing hardware and enhancing inspection efficiency.
Implementation Method 1
obtaining a grayscale feature value corresponding to each pixel of an object to be inspected by a single-energy radiation scanning; obtaining a mass-thickness value for a corresponding pixel from a pre-created mass-thickness attenuation curve by utilizing the grayscale feature values for respective pixels
Data Source
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AI summary
Disclosed is a method and device for estimating weight of an object to be inspected in an inspection system. An effective atomic number and a high-energy gray value of the dual-energy corresponding to each pixel of the object to be inspected are obtained by a dual-energy radiation scanning. A mass-thickness value for a corresponding pixel is obtained from a pre-created mass-thickness attenuation curve by utilizing the effective atomic numbers and the high-energy gray value of the dual-energy for respective pixels. Weight information for at least a part of the object to be inspected is calculated by multiplying the mass-thickness value by the area of the pixel. Such a method may accurately calculate the weight of the object to be inspected and save the cost for a conventional weighing hardware.