Rotatable Filter Cage for Adjustable X-Ray Dosage
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Solution Overview
Problem
Existing human body security inspection X-ray equipment lacks flexibility in adjusting radiation dosage and scan regions, leading to unnecessary radiation exposure and inadequate inspection of specific body sections.
Innovation Solution
A human body security inspection apparatus with a filter device featuring a rotatable filter cage composed of multiple pairs of filtering sheets made of different materials and thicknesses, allowing for adjustable radiation dosage and movable filter region defining rods to customize scan areas.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If high-dosage radiation is used for security inspection, then inspection reliability is improved, but radiation damage to the human body increases
Solution Approach 1:
The patent implements dynamic adjustment of radiation dosage by providing multiple dosage levels (first, second, and third outputting-dosage levels) that can be switched based on inspection requirements. The system transitions from static to dynamic dosage control, allowing high dosage for critical inspections and low dosage for routine scans, thereby resolving the contradiction between inspection reliability and radiation damage.
Solution Approach 2:
The patent changes the radiation dosage parameter by introducing multiple outputting-dosage levels with different intensity settings. By adjusting the radiation parameter according to inspection needs (high dosage for suspicious objects, low dosage for general screening), the system achieves both high reliability when needed and reduced radiation exposure during routine operations.
2Adaptability or versatility
If overall scan of the whole human body is performed, then inspection coverage is improved, but radiation exposure area increases
Solution Approach 1:
The patent segments the inspection process into different dosage levels and application scenarios. By dividing the radiation output into multiple dosage levels (first for suspicious objects, second for general inspection, third for special cases), the system can selectively apply radiation only where needed, reducing overall exposure area while maintaining comprehensive inspection coverage through targeted high-dosage scans.
Solution Approach 2:
The patent applies partial action by using low-dosage radiation (second outputting-dosage level) for routine general inspections where high reliability is not critical, and reserves high-dosage radiation (first and third levels) for specific suspicious cases. This partial application of high dosage reduces overall radiation exposure while maintaining adequate inspection coverage for security purposes.
3Object-affected harmful factors
If local scan of specific body section is performed, then radiation exposure area is reduced, but inspection flexibility decreases
Solution Approach 1:
The patent implements dynamic adaptability by providing multiple dosage levels that can be switched based on inspection requirements. The system can dynamically adjust between local high-dosage scans for suspicious areas and broader low-dosage scans for general coverage, maintaining inspection flexibility while reducing radiation exposure through intelligent dosage selection and switching.
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 flexible adjustment of radiation dosage and scan regions, reducing radiation exposure while ensuring thorough security inspections of any body section, meeting varying inspection requirements.
Implementation Method 1
a filter cage disposed within the housing and formed by arranging two or more pairs of filtering sheets, which are made of different materials and/or have different thicknesses, in an encircling way; wherein the filter cage is capable of rotating about its central axis such that at least one pair of the two or more pairs of filtering sheets is capable of filtering the radiation beam from the radiation beam exit of the radiation source to adjust an outputted dosage of the radiation beam
Data Source
AI summary
A human body security inspection apparatus, a method of operating the same, and an associated filter device are disclosed. The human body security inspection apparatus includes a radiation beam exit configured for emitting a radiation beam; a beam guiding box configured for guiding the radiation beam; and a filter device configured between the radiation beam exit and the beam guiding box. The filter device includes a housing and a filter cage having a central axis. The filter cage is formed by arranging two or more pairs of filtering sheets, which are made of different materials and/or have different thicknesses, in an encircling way. The filter cage is rotatable about its central axis such that at least one pair of filtering sheets is capable of filtering the radiation beam to adjust an outputted dosage of the radiation beam of the human body security inspection apparatus.