Cosmic Ray Inspection for Moving Objects
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Solution Overview
Problem
Current methods for inspecting moving objects using cosmic rays are inefficient and lack the capability to accurately differentiate between materials with varying atomic numbers, particularly in real-time scenarios, which is critical for security and safety applications.
Innovation Solution
A method, device, and system that utilize position sensitive detectors to acquire and process track information of charged particles, including muons and electrons, to reconstruct the material composition of moving objects by analyzing scattering and blocking effects, enabling real-time recognition of materials with low and medium-to-high atomic numbers.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If traditional cosmic ray inspection methods are used for moving objects, then the inspection can be performed, but the inspection efficiency is low and material differentiation accuracy is insufficient
Solution Approach 1:
The inspection system segments the detection process by using multiple position-sensitive detectors arranged in different spatial positions to simultaneously detect different aspects of cosmic ray particle trajectories. This segmentation enables parallel processing of multiple detection tasks, improving inspection efficiency while maintaining material differentiation accuracy through combined analysis of scattered detection data.
Solution Approach 2:
The patent introduces time as an additional dimension by measuring the time of flight of cosmic ray particles through the moving object. This temporal dimension, combined with spatial position information from multiple detectors, creates a four-dimensional detection framework that enhances both inspection speed (through faster data acquisition) and material differentiation accuracy (through more comprehensive particle trajectory information).
2Speed
If real-time inspection of moving objects is implemented, then inspection speed improves, but measurement accuracy of material composition deteriorates
Solution Approach 1:
The system performs preliminary tracking and registration of the moving object's position and orientation before and during the cosmic ray detection process. By pre-establishing the spatial reference framework and continuously updating object position data, the system can rapidly process detection results in real-time without sacrificing measurement accuracy, as the geometric relationships are already determined in advance.
Solution Approach 2:
The patent implements a feedback mechanism where detection results are continuously updated and refined in real-time as more cosmic ray particle data becomes available. The system uses feedback from particle trajectory measurements to iteratively improve material composition analysis accuracy while maintaining high inspection speed through efficient real-time data processing algorithms.
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 efficiency and accuracy of security inspections by allowing for the simultaneous detection and differentiation of materials with varying atomic numbers, improving the quality of radiation imaging and enabling the recognition of both high-Z nuclear materials and low-Z substances like drugs and explosives.
Implementation Method 1
acquiring information about charged particles in the cosmic rays with a position sensitive detector
Implementation Method 2
recognizing the material inside the moving object based on the track reconstruction... analyzing scattering and blocking effects
Implementation Method 3
recognizing the material inside the moving object based on the track reconstruction... analyzing scattering and blocking effects
Data Source
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AI summary
The present disclosure relates to a method, a device and a system for inspecting a moving object based on cosmic rays, pertaining to the field of radiation imaging and safety inspection techniques. The method includes: detecting (S110) whether a speed of the inspected moving object is within a preset range; recording (S120) a motion trajectory of the moving object with a monitoring device; acquiring (S130) information about charged particles in the cosmic rays with a position sensitive detector, the information about charged particles including track information of the charged particles; determining (S140) the moving object by matching positions of the motion trajectory and the track information; reconstructing (S150) the track of the charged particles according to the information about the charged particles; and recognizing (160) the material inside the moving object based on the track reconstruction.