Handheld Substance Detector with Integrated Decontamination
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Solution Overview
Problem
There is a need for compact and portable substance detection equipment that can rapidly detect and identify specific substances in ambient air, on surfaces, inside closed articles, and in fluid matter, with the ability to collect samples, analyze them, and efficiently discharge and clean the sensing elements for repeated use.
Innovation Solution
A handheld portable substance detection device that collects samples, produces vapors if needed, and introduces them into a sensor arrangement with multiple sensing elements to measure reactions, featuring a one-way outlet valve for decontamination and a pressure unit for sample discharge, allowing for rapid cycle reuse.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the device incorporates sample collection, vapor production, and sensor analysis functionalities in a compact handheld format, then portability and rapid detection capability are improved, but device complexity increases
Solution Approach 1:
The patent combines sample collection, vapor production, and sensor analysis functionalities into a single integrated handheld device. The sample collection unit, vapor production unit, and sensor arrangement are merged into one compact system that can perform complete substance detection cycles portably, resolving the contradiction by achieving rapid detection capability while maintaining manageable device complexity through functional integration.
Solution Approach 2:
The handheld device is designed with multi-functionality to collect samples, produce vapors, and analyze substances within a single unit. This universal design allows the device to perform multiple operations (sampling, vaporization, detection) without requiring separate equipment, thereby improving productivity while keeping the overall system complexity manageable through consolidated functionality.
2Productivity
If the device performs complete detection cycles including decontamination rapidly, then productivity is improved, but the complexity of the decontamination system increases
Solution Approach 1:
The device implements a decontamination system that rapidly cleans the sensor arrangement and internal channels between detection cycles. By efficiently discarding contaminated samples and recovering the sensor system through heating and purging, the device enables immediate reuse, improving productivity while managing decontamination system complexity through focused cleaning mechanisms.
Solution Approach 2:
The decontamination system is designed to automatically clean the sensor arrangement and internal pathways without requiring manual intervention. The system uses heating elements to vaporize and expel residual substances, and pressure control to flush channels, enabling rapid self-cleaning between cycles and improving productivity while keeping the control system relatively simple.
3Measurement precision
If the sensor arrangement is designed for efficient sample interaction, then measurement precision is improved, but device complexity increases
Solution Approach 1:
The sensor arrangement is designed with specific local characteristics to optimize sample interaction. The sensor elements are positioned and configured within the chamber to maximize contact with vaporized samples, and the chamber geometry is tailored to direct vapor flow efficiently over the sensing elements. This localized optimization improves measurement precision while avoiding unnecessary overall system complexity.
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
Enables rapid and reliable detection of specific substances with efficient sample collection, analysis, and decontamination, allowing for immediate reuse of the device, making it suitable for various applications including narcotics, explosives, and industrial chemical detection.
Implementation Method 1
heating the sensing elements to a temperature sufficient for physical separation between the sample and the sensing elements
Implementation Method 2
applying pressure in the chamber to discharge the sample from the sensing unit
Implementation Method 3
an array of sensing elements, each configured and operable to interact with sample material in the vicinity thereof for detecting one or more specific substances
Data Source
Figure 1A~1B
Figure 2
Figure 3A
AI summary
Disclosed are substance detection and identification devices, and methods of using them for detection and identification of substances in ambient surroundings, on surfaces of objects, inside closed items or in fluids. A substance detection and identification device may comprise a housing, an opening in the housing for passage of sample material therethrough, a sensing unit located in the housing and an array of sensing elements configured and operable to interact with sample material in the vicinity thereof for detecting one or more specific substances and generating sensing data indicative thereof. A sample path defined in the housing between the opening and the sensing unit is used for facilitating flow of the sample material towards the sensing unit. A gas inlet assembly provided in the housing is configured for providing a predetermined supply of the sample material to the sensing elements in the sensors array, to thereby enable a predetermined time pattern of the sensing data from the array of sensing elements. A heating unit may be provided in the housing for heating the sensing elements.