Security Inspection Door With Shielded Subsystems

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Solution Overview

Problem

Current security inspection doors cannot detect non-magnetic metals, explosives, and narcotic drugs simultaneously, posing a significant security vulnerability.

Innovation Solution

A security inspection door integrating a narcotic drug/explosive detecting subsystem, a radioactive substance detecting subsystem, and a metal detecting subsystem, with electromagnetic radiation shields to isolate and prevent interference between the subsystems, allowing for simultaneous detection of these threats.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If multiple detecting subsystems are integrated into a single security inspection door, then the detection capability is improved, but the electromagnetic interference between subsystems worsens

Engineering Contradiction:
Improvedetection capabilityVSAvoidelectromagnetic interference
Core Design Contradiction:
Adaptability or versatilityVSObject-affected harmful factors

Solution Approach 1:

The security inspection door is divided into multiple independent detecting subsystems (metal detector, explosive detector, radioactive substance detector), each enclosed in separate shielded chambers. This segmentation allows each subsystem to function independently while reducing electromagnetic interference between them, resolving the contradiction between enhanced detection capability and electromagnetic interference.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

Electromagnetic shielding materials are introduced as intermediary elements between the different detecting subsystems. These shields act as mediators that block electromagnetic fields from one subsystem from interfering with another, enabling multiple subsystems to coexist in the same device without mutual interference.

Inventive Principle:
Principle #24Intermediary (Mediator)

2Measurement precision

If electromagnetic radiation shields are added to isolate detecting subsystems, then the detection accuracy is improved, but the device complexity increases

Engineering Contradiction:
Improvedetection accuracyVSAvoidstructure complexity
Core Design Contradiction:
Measurement precisionVSDevice complexity

Solution Approach 1:

The electromagnetic radiation shields are nested within the overall door structure, with each shield forming an enclosed chamber that houses a detecting subsystem. This nesting approach integrates the shielding function into the existing device architecture without requiring separate external structures, thereby improving detection accuracy while minimizing increases in overall device complexity.

Inventive Principle:
Principle #7Nested doll (Nesting)

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

Ensures the detection of narcotic drugs, explosives, radioactive substances, and dangerous metal articles in a single inspection, enhancing security reliability and accuracy by preventing electromagnetic interference.

Implementation Method 1

electromagnetic radiation shields are provided respectively around the three detecting subsystems, so that the narcotic drug/explosive detecting subsystem, the radioactive substance detecting subsystem and the metal detecting subsystem are isolated from one another and are not interfered with one another

Methodology Applied
Scientific EffectElectromagnetic radiation shielding: Faraday Cage

Implementation Method 2

a metal detecting subsystem provided in a tank body

Methodology Applied
Scientific EffectElectromagnetic induction: Electromagnetic Induction

Implementation Method 3

a radioactive substance detecting subsystem provided in a tank body

Methodology Applied
Scientific EffectGamma ray detection: Radioactive Decay

Implementation Method 4

a narcotic drug/explosive detecting subsystem provided in a tank body

Methodology Applied
Scientific EffectIon mobility spectrometry:

Data Source

PatentUS8129691B2Security inspection door
Publication Date: 2012.03.06 NUCTECH CO LTD
  • US8129691B2 patent drawing
  • US8129691B2 patent drawing
  • US8129691B2 patent drawing

AI summary

A security inspection door comprising a narcotic drug/explosive detecting subsystem, a radioactive substance detecting subsystem and a metal detecting subsystem which are provided in a tank body is disclosed, wherein electromagnetic radiation shields are respectively provided around the three detecting subsystems, so that they are isolated from one another and are not interfered with one another. The three detecting subsystems are combined together to form a novel security inspection door, so the narcotic drugs/the explosives, the radioactive substances and the dangerous metal articles can be detected at the same time. Further, electromagnetic radiation shields are respectively provided around the three detecting subsystems, so that the three detecting subsystems are isolated from one another and are not interfered with one another, and thus, the inspection reliability and the inspection accuracy are improved.