Dual-Housing Metal Detector with Integrated Coil Arrays
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Solution Overview
Problem
Conventional metal detectors are limited in detecting metal targets of varying geometries, sizes, and orientations, and often require multiple devices for comprehensive security checks, which can be cumbersome and aesthetically unappealing for use in sensitive areas like airports and official buildings.
Innovation Solution
A metal detector system featuring two oblong vertical housings with separate emitting and receiving coils, where each housing contains two coils and control means to activate both sets of coils simultaneously or subsequently, along with additional sensors for detecting ionizing radiation, explosives, and badge readings, allowing for improved detection capabilities and aesthetic design.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional metal detectors use planar coils in vertical walls, then the structure is simple and easy to manufacture, but the detection performance is limited and requires multiple devices for comprehensive security checks
Solution Approach 1:
The patent combines multiple coils (planar and helicoidal) into a single integrated housing structure, merging the functions of multiple detection devices into one unit. This integration maintains comprehensive detection capability while reducing the number of separate devices needed in the security checkpoint.
Solution Approach 2:
The detector housing is designed to perform multiple detection functions simultaneously using different coil configurations. The planar coils detect metals in one orientation while helicoidal coils detect metals in other orientations, making the single device universal for detecting various metal geometries, sizes, and orientations.
2Reliability
If multiple metal detector devices are used for comprehensive security checks, then detection coverage is improved, but the device becomes cumbersome and aesthetically unappealing
Solution Approach 1:
The patent merges multiple detection devices into a single integrated portal structure, combining several coil systems and detection functions into one unified device. This eliminates the need for multiple separate detectors, improving operational convenience while maintaining comprehensive detection coverage.
3Reliability
If multiple separate detection devices are deployed, then comprehensive security coverage is achieved, but personnel requirements and operational costs increase
Solution Approach 1:
The patent consolidates multiple detection functions into a single portal device, reducing the number of devices that need to be monitored and operated. This integration decreases personnel requirements and operational complexity while maintaining comprehensive security coverage, thereby improving operational efficiency.
4Measurement precision
If conventional detectors use single coil configurations, then the device is compact and aesthetic, but detection accuracy varies with target geometry and orientation
Solution Approach 1:
The patent applies different coil configurations (planar and helicoidal) in specific locations within the housing to detect metals with different geometries and orientations. Each coil type is positioned to optimize detection for particular target characteristics, providing locally optimized detection accuracy throughout the portal space.
Solution Approach 2:
The patent uses asymmetric coil arrangements combining planar and helicoidal configurations rather than uniform symmetric arrangements. This asymmetric design enables detection of metal targets with varying geometries and orientations by exploiting the different detection characteristics of each coil type positioned at different locations.
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
Enhances detection accuracy and reduces false alarms, enabling efficient and aesthetically pleasing security checks by integrating multiple sensors into a single portal, reducing the need for multiple devices and personnel, while improving transit flow and reducing costs.
Implementation Method 1
emitting and receiving electrical coils provided in said housings
Implementation Method 2
detecting non-authorized objects in a zone having protected access
Implementation Method 3
receiving coils provided respectively in both the two housings are also simultaneously or subsequently active
Data Source
AI summary
A metal detector for control of protected access comprises two oblong shape vertical housings (10, 12), a structure (14) connecting the upper part of the vertical housings (10, 12) and emitting and receiving electrical coils (3, 5) provided in the housings (10, 12). Each of the two housings (10, 12) comprises two separate emitting (3) and/or receiving (5) coils. The coils operate so that each of the two housings (10, 12) comprises one emitting coil (TX) and one receiving coil (RX). The metal detector further comprises a controller for controlling operation of the emitting and receiving coils, so that when an emitting coil (TX1, TX2) provided in a housing (10, 12) is active, the two receiving coils (RX1, RX2) provided respectively in both the two housings are also simultaneously or subsequently active.