Multi-directional Radiation Inspection System for Moving Objects
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Solution Overview
Problem
Existing radiation inspection systems for moving objects are limited to inspecting vehicles moving in a single direction, making them inefficient for complex traffic networks and increasing costs due to limited space occupation.
Innovation Solution
A radiation inspection system with a radiation source and detector on either side of a detection passage, featuring multiple detecting units and a control module that allows for radiation inspection in multiple directions by adjusting the radiation source's emission based on the object's position and speed, ensuring efficient scanning without unnecessary radiation exposure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a radiation inspection system is designed for single-direction inspection, then the system structure is simple, but the inspection efficiency is low and the system cannot handle complex traffic networks
Solution Approach 1:
The detection passage is divided into multiple segments with detecting units positioned at different locations (first, second, third detecting units on one side; fourth, fifth, sixth detecting units on the other side). This segmentation allows the system to identify vehicles moving in different directions by detecting which segments are triggered, enabling multi-directional inspection capability while maintaining a relatively simple overall structure.
Solution Approach 2:
The radiation inspection system is designed to handle multiple inspection scenarios (different vehicle directions, various speeds) using a single unified system. The control module automatically adjusts the radiation source operation based on detected vehicle parameters, making the system universal for different inspection situations without requiring separate specialized systems for each case.
2Reliability
If the radiation source operates continuously, then inspection coverage is complete, but unnecessary radiation exposure occurs and costs increase
Solution Approach 1:
The radiation source operates periodically rather than continuously. The control module activates the radiation source only when vehicles are detected by the detecting units and keeps it active only for the duration needed to inspect passing vehicles. This periodic operation ensures complete inspection coverage for target vehicles while minimizing unnecessary radiation exposure to the environment and personnel.
Solution Approach 2:
The system implements feedback control where detecting units monitor the detection passage for vehicle presence and provide signals to the control module. The control module uses this feedback information to dynamically control the radiation source operation - activating it when vehicles are present and deactivating it when the passage is clear, thereby maintaining inspection reliability while reducing harmful radiation exposure.
3Reliability
If the system inspects all moving objects regardless of speed, then inspection thoroughness is high, but resource waste occurs on low-speed objects
Solution Approach 1:
The system changes the operational parameters of the radiation source based on detected vehicle speed. The control module compares the calculated speed (from detection timing across multiple detecting units) with a preset threshold and adjusts radiation source operation accordingly - activating for high-speed vehicles that require inspection and deactivating for low-speed vehicles where inspection is unnecessary, thus maintaining thoroughness for relevant cases while avoiding resource waste.
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
Enables efficient radiation inspection of moving objects in multiple directions, reducing costs and improving inspection efficiency by preventing unnecessary radiation exposure and prioritizing high-speed vehicles for scanning.
Implementation Method 1
the radiation source emitting rays and the radiation detector collecting rays for radiation imaging
Data Source
Figure 1~2
Figure 3
Figure 4~5
AI summary
A system and method for radiation inspection on a moving object. The system comprises a radiation source and a radiation detector. Rays emitted by the radiation source are limited in a scanning area. The scanning area is provided by a first boundary surface and a second boundary surface. The system also comprises: multiple detection units (110, 120, 130, 140, 150, 160) arranged along a detection channel in turn and used for triggering and sending a signal when detecting that the moving object arrives or leaves; and a control module used for receiving signals sent by the multiple detection units (110, 120, 130, 140, 150, 160) and controlling the radiation source according to the received signal. The first to third detection units (110, 120, 130) among the multiple detection units (110, 120, 130, 140, 150, 160) are located at one side of the scanning area and near the first boundary surface. The fourth to sixth detection units (140, 150, 160) among the multiple detection units (110, 120, 130, 140, 150, 160) are located at the other side of the scanning area and near the second boundary surface. The system and the method can implement radiation inspection on moving objects traveling in multiple directions.