Robotic Baggage Inspection Using Spatial Reference Markings
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Solution Overview
Problem
Current security screening processes at airports are burdensome for Bomb Appraisal Officers (BAOs) due to the manual handling of baggage items suspected to contain explosives or hazardous materials, leading to schedule and availability issues.
Innovation Solution
A robotic system that includes a transport bin with machine-readable spatial reference frame markings, allowing for robotic opening and inspection of baggage items using electromagnetic scanning and machine vision, enabling precise robotic accessing and swabbing operations based on geometric position information.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If manual handling of baggage items is used by Bomb Appraisal Officers, then security inspection can be performed, but schedule and availability burdens increase and efficiency decreases
Solution Approach 1:
The robotic system performs self-positioning and self-execution of inspection tasks. The robot autonomously navigates to the baggage item, positions itself based on spatial reference frame markings, and executes opening and swabbing operations without requiring continuous human intervention or manual handling by BAOs.
Solution Approach 2:
The patent replaces the manual mechanical handling system with an automated robotic system. The robot uses machine vision to detect spatial reference frame markings and automatically positions itself, substituting human operators and eliminating non-productive movement time associated with manual baggage handling.
2Productivity
If robotic automation is implemented, then handling time is reduced and efficiency improves, but system complexity increases
Solution Approach 1:
The spatial reference frame marking serves as an intermediary between the electromagnetic scanner and the robotic system. This simple visual marker enables the robot to understand baggage position and orientation without requiring complex communication protocols or sophisticated sensing systems, thereby reducing overall system complexity while maintaining automation benefits.
Solution Approach 2:
The spatial reference frame marking performs multiple functions: it serves as a position indicator, orientation reference, and coordinate system definition for the robotic system. This single multi-functional element simplifies the overall system design by eliminating the need for separate sensors, markers, or communication systems for each function.
3Measurement precision
If precise geometric position information is used, then robotic accessing accuracy improves, but measurement and detection difficulty increases
Solution Approach 1:
The spatial reference frame marking uses distinct visual characteristics (color, pattern, or geometric shape) that are easily detectable by machine vision systems. This visual encoding allows the robotic system to accurately determine baggage position and orientation through simple image processing, achieving high measurement precision without complex detection mechanisms.
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
The robotic system significantly reduces the time wasted on non-productive movements and unnecessary handling of baggage, enhancing the efficiency of security screening by automating the inspection and swabbing process for objects-of-interest within baggage items.
Implementation Method 1
receiving from an electromagnetic scanning a transport bin and an object-of-interest (OOI) geometric position information
Implementation Method 2
machine vision detecting of the spatial reference frame marking, resolving the spatial reference frame marking into a local spatial reference frame
Data Source
AI summary
Systems and methods are described, and an example system includes a transport bin configured to carry a baggage item and having spatial reference frame marking detectable by electromagnetic scan and by machine vision. The system includes a robotic arm apparatus at an inspection area, and includes a switched path baggage conveyor that, responsive to electromagnetic scan detection of an object-of-interest (OOI) within the baggage item, conveys the transport bin to the inspection area. The electromagnetic scan generates OOI geometric position information indicating geometric position of the OOI relative to the spatial reference frame marking. The robotic arm apparatus, responsive to receiving the transport bin, uses machine vision to detect orientation of the spatial reference frame marking, then translates OOI geometric position information to local reference frame, for robotic opening of the baggage item, and robotic accessing and contact swab testing on the OOI.