Air Nozzle Baggage Trace Detection System
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Solution Overview
Problem
Existing baggage inspection systems face challenges such as longer inspection times, high probability of mechanical failure, contamination, and increased detection costs due to the need for manual wiping and complex surface contact, which can lead to accidents and inefficiencies in detecting dangerous substances.
Innovation Solution
A trace detecting system that uses air nozzles to spray air jets at 15 m/s or more for non-contact removal of sample microparticles from baggage, combined with a detection section, conveyance means, and an air nozzle control system to optimize air jet operations, along with a separator section and conical collector to enhance detection sensitivity and prevent erroneous readings.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If an arm with joints and moving mechanism is used to move the air nozzle along the baggage surface, then the air nozzle can scan the baggage surface, but the inspection time increases and the probability of mechanical failure increases
Solution Approach 1:
The patent replaces the mechanical arm with joints and moving mechanisms with a fixed air nozzle arrangement. Compressed gas is supplied through nozzles positioned at the entrance of the sampling room, eliminating complex mechanical movement systems while maintaining the ability to scan baggage surfaces effectively.
Solution Approach 2:
The patent extracts the air nozzle from the moving mechanical arm and fixes it in position. The nozzle is separated from the complex mechanical system and positioned independently at the sampling room entrance, where it can directly blow compressed gas onto the baggage surface without requiring mechanical movement.
2Reliability
If the baggage is stopped once in the sampling room for inspection, then the air nozzle can scan the baggage surface, but the inspection time increases
Solution Approach 1:
The patent positions the air nozzle at the entrance of the sampling room before the baggage enters. The compressed gas is already prepared and positioned to blow onto the baggage surface as soon as the baggage enters the sampling room, eliminating the need to stop the baggage for nozzle positioning or preparation.
Solution Approach 2:
The patent enables continuous inspection by having the air nozzle positioned to blow compressed gas onto the baggage surface continuously as the baggage moves through the sampling room. The detection process operates without interruption, maintaining constant detection action throughout the baggage's passage.
3Reliability
If a rotary brush is used to contact the baggage surface, then sample microparticles can be collected, but the detection parts are limited and the likelihood of accidents increases
Solution Approach 1:
The patent uses compressed gas (pneumatics) to blow sample microparticles from the baggage surface into the sampling room, replacing the mechanical rotary brush contact method. This non-contact approach eliminates mechanical wear and potential accidents while effectively collecting particles from the entire baggage surface including complex features like handles and zippers.
Solution Approach 2:
The patent replaces the mechanical rotary brush system with a pneumatic compressed gas system. Instead of mechanical contact and rotation to collect particles, the system uses high-velocity gas flow to dislodge and transport particles, eliminating mechanical wear, friction, and potential accidents while improving detection coverage.
4Reliability
If manual wiping is used to collect sample microparticles, then the detection can be performed, but variations in detection conditions occur and detection costs increase
Solution Approach 1:
The patent employs an automated compressed gas system that self-regulates the particle collection process. The system automatically supplies compressed gas at controlled pressure to blow particles into the sampling room, eliminating the need for manual wiping operations and the variability associated with different inspectors' techniques.
Solution Approach 2:
The patent replaces manual mechanical wiping with an automated pneumatic system. The compressed gas supply mechanism automatically performs the particle collection function without human intervention, ensuring consistent detection conditions and reducing operational costs by eliminating the need for multiple trained inspectors.
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, precise, and reliable detection of dangerous substances without manual contact, reducing inspection time and costs while minimizing mechanical failures and contamination risks.
Implementation Method 1
a removal section including a plurality of air nozzles fixed to an inner wall thereof to spray air jet from the air nozzles and remove a sample substance attached to an inspection target
Implementation Method 2
spray air jet from the air nozzles at 15 m/s or more to the surface of the inspection target
Data Source
AI summary
Provided is a technique to identify a sample substance attached to an inspection target easily and precisely, while improving the rate of operation and reducing the number of persons required for inspection. A trace detecting system includes detection means to detect the size (vertical and horizontal dimensions) of an inspection target, and selects an air nozzle capable of spraying air jet at 15 m/s or more to the surface of the inspection target for air jet spraying.