Hydrogen Peroxide Detector With Light-Blocking Tip

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Solution Overview

Problem

Existing explosives detectors lack the capability to detect vapor-phase hydrogen peroxide and are not portable enough for use in areas where peroxide-based explosives may be deployed, requiring a device that can quickly and sensitively detect hydrogen peroxide in airport security and similar settings.

Innovation Solution

A portable apparatus with a housing assembly, a pump, and a sensor assembly that includes a heated tip and a chemiluminescent material, which reacts with hydrogen peroxide to produce light detectable by an optical detector, allowing for rapid detection of hydrogen peroxide vapor within seconds.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Measurement precision

If standard testing procedures are used for detecting peroxide compounds, then detection accuracy can be achieved, but the detection time becomes excessively long and the equipment lacks portability

Engineering Contradiction:

Improvedetection sensitivityVSAvoiddetection time

Core Design Contradiction:

Measurement precisionVSLoss of time

Solution Approach 1:

The patent replaces complex mechanical testing equipment with a portable optical detection system that uses a light source, optical fiber, and photodetector to detect hydrogen peroxide through chemiluminescence, eliminating the need for lengthy standard testing procedures while maintaining detection sensitivity

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The patent changes the detection parameter from traditional chemical analysis to optical signal detection through chemiluminescence, enabling rapid detection within seconds while preserving measurement precision through the use of sensitive photodetectors

Inventive Principle:

Principle #35Parameter changes

2Adaptability or versatility

If existing explosives detectors are used, then nitrogen containing compounds can be detected, but vapor-phase hydrogen peroxide detection capability is lacking

Engineering Contradiction:

Improvedetection capabilityVSAvoiddetection accuracy for peroxide

Core Design Contradiction:

Adaptability or versatilityVSReliability

Solution Approach 1:

The patent applies local quality by using a specific chemiluminescent reaction zone where hydrogen peroxide reacts with luminol to produce light, creating a localized detection environment optimized for peroxide detection while the rest of the device maintains general detector functionality

Inventive Principle:

Principle #3Local quality

Solution Approach 2:

The patent introduces luminol as an intermediary substance that reacts with hydrogen peroxide to produce chemiluminescence, enabling indirect detection of peroxide compounds with high reliability through the intermediate chemical reaction and light emission

Inventive Principle:

Principle #24Intermediary (Mediator)

3Speed

If a portable detector is designed for rapid detection, then detection speed improves, but light sensitivity from ambient environment may interfere with detection

Engineering Contradiction:

Improvedetection speedVSAvoidambient light interference

Core Design Contradiction:

SpeedVSObject-affected harmful factors

Solution Approach 1:

The patent applies preliminary anti-action by using a light-shielding tip that blocks ambient light from entering the detection chamber before the detection process begins, pre-preventing light interference while maintaining rapid detection capability

Inventive Principle:

Principle #9Preliminary anti-action

Solution Approach 2:

The patent converts the harmful effect of ambient light into a beneficial feature by using the light-shielding tip to create a dark environment that enhances the visibility and sensitivity of the chemiluminescence signal, making the detection more accurate despite the presence of ambient light sources

Inventive Principle:

Principle #22Blessing in disguise (Convert harm into benefit)

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 apparatus enables rapid detection of hydrogen peroxide vapor, providing a portable and sensitive solution for airport security and other field environments, capable of detecting hydrogen peroxide in a short period with high sensitivity and without the need for pretreatment.

Implementation Method 1

the vapor-phase hydrogen peroxide subsequently contacts a chemiluminescent material positioned within the apparatus. Upon contact, the hydrogen peroxide reacts with the chemiluminescent material producing light.

Methodology Applied

Scientific EffectChemiluminescence: Chemiluminescence

Implementation Method 2

the tip is heated

Methodology Applied

Scientific EffectHeating: Heating

Data Source

PatentUS8647579B2Hydrogen peroxide detector comprising light-blocking tip with air deflector

Publication Date: 2014.02.11 TELEDYNE FLIR DEFENSE INC

AI summary

The current invention provides a detector and method suitable for sensing vapor-phase hydrogen peroxide. The detector utilizes a chemiluminescent material comprising a peroxide reactive compound, a dye and a solvent. Upon reaction with hydrogen peroxide, the chemiluminescent material will generate detectible light.