Low-Bulk Integrated Detector with Shielded Dual-Technology Screening
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Solution Overview
Problem
Existing metal detectors and body scanners face challenges in efficiently detecting concealed prohibited objects while adhering to dimensional standards, leading to increased system footprint and false detections due to electromagnetic interference and relative movement between devices.
Innovation Solution
A dual technology detection system integrating a metal detector and a body scanner within a single walk-through structure, with optimized spacing and shielding to minimize interference and ensure stable operation, allowing simultaneous and accurate detection of metallic and non-metallic objects.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a metal detector and body scanner are placed in series to meet dimensional standards, then the passage width and depth comply with accessibility guidelines, but the system footprint increases and electromagnetic interference causes false detections
Solution Approach 1:
The patent combines a metal detector and body scanner into a single integrated walk-through structure, merging two separate detection systems into one compact unit. This allows the system to meet dimensional standards for wheelchair accessibility while reducing the overall footprint compared to placing devices in series.
Solution Approach 2:
The body scanner is positioned within the same structural envelope as the metal detector, with one device nested within or adjacent to the other within the walk-through frame. This nesting approach allows both devices to share space efficiently while maintaining their functional independence.
2Area of stationary object
If a metal detector and body scanner are placed close together to reduce footprint, then space requirements are minimized, but electromagnetic interference and relative movement increase false detections
Solution Approach 1:
The patent introduces shielding structures and positioning mechanisms as intermediaries between the metal detector and body scanner. These elements mediate the electromagnetic interaction between devices, reducing interference while maintaining compact spacing. The shielding acts as a buffer that allows close proximity without compromising detection reliability.
3Ease of manufacture
If separate metal detector and body scanner are used, then each device can be optimized independently, but the examination process becomes more complex and time-consuming
Solution Approach 1:
By merging the metal detector and body scanner into a single integrated system, the patent enables simultaneous detection of both metallic and non-metallic objects during one passage. This eliminates the need for separate examinations, reducing total inspection time while maintaining the ability to optimize each detection function independently through dedicated sensor arrays and processing channels.
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 system provides high detection efficiency with reduced space requirements, compliant with dimensional standards, and minimizes false alarms by ensuring synchronized passage through both detectors and reducing electromagnetic interference.
Implementation Method 1
They comprise at least one transmitting coil and at least one receiving coil. The transmitting coil is powered by an alternating electric current.
Implementation Method 2
The receiving coil is designed to detect disturbances of the magnetic field generated by the transmitting coil due to the presence of a metallic object, for example the attenuation of the amplitude of the magnetic field, or the signal phase change, due for example to the eddy currents generated on the metallic object.
Data Source
AI summary
The present invention relates to a dual-technology detecting system, comprising: an archway, a metal detector housed in a first segment of the side panels, a millimetre-wave body scanner housed in a second segment of the side panels, said body scanner comprising at least one antenna configured to emit radiant energy, wherein, within the first segment, the internal faces of the side panels are separated by a distance at least equal to 800 mm and smaller than or equal to 900 mm, and within the second segment, a maximum distance between the internal faces of the side panels is larger than or equal to 1000 mm and smaller than or equal to 1200 mm.