Parafoil Flow-Through Sensor for Airborne Agent Detection
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Solution Overview
Problem
Current systems are ineffective in detecting and identifying airborne agents and contaminants in real-time due to the transient and vaporous nature of aerosols and particulates, with limitations in size, range, false alarms, specificity, sensitivity, and persistence, especially when attempting persistent measurements across a large air column.
Innovation Solution
A parafoil-based system with a flow-through sensor suite that passes a column of air through a port, equipped with sensors and a processing device to detect and discriminate agents, utilizing a network of sensors and illuminators to analyze the air for the presence of specific agents, and deploying nano-sensors for enhanced sensitivity and coverage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If sensors are used to detect airborne agents in free space, then detection capability is provided, but response time constraints and sensitivity to interferences limit effectiveness
Solution Approach 1:
The patent introduces an intermediary sampling system that collects airborne agents onto a substrate before analysis. The sampling device acts as a mediator between the airborne agents and the sensors, concentrating the agents on a substrate to enhance detection sensitivity while allowing sufficient time for collection without requiring immediate real-time response from the sensors themselves.
Solution Approach 2:
The system performs preliminary action by collecting and concentrating airborne agents onto a substrate before the actual sensing operation. This pre-concentration step prepares the sample in advance, allowing sensors to analyze a concentrated sample rather than searching for trace amounts in free space, thereby improving sensitivity without compromising response time.
2Area of stationary object
If persistent measurements are attempted across a large column of air, then detection coverage is improved, but the transient and vaporous nature of aerosols and particulates reduces measurement effectiveness
Solution Approach 1:
The sampling substrate serves as an intermediary that captures transient aerosols and particulates from a large air column. By mediating the interaction between the fleeting airborne agents and the detection system, the substrate preserves the collected agents for subsequent analysis, overcoming the transient nature of the original samples while maintaining broad spatial coverage.
Solution Approach 2:
The system applies local quality by concentrating the dispersed airborne agents from a large volume onto a localized substrate. This transformation takes the distributed, transient nature of aerosols in free space and converts them into a concentrated, stable sample at a specific location, enabling reliable persistent measurements.
3Length of moving object
If free space discriminating and sensing is performed, then agent detection is possible, but limitations in size and range reduce overall effectiveness
Solution Approach 1:
The sampling substrate acts as an intermediary that extends the effective detection range by collecting agents from distant locations in the air column. Once collected and concentrated on the substrate, these agents can be analyzed with high specificity, overcoming the trade-off between detection range and discrimination precision that plagues free space sensing.
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 real-time detection and identification of airborne agents and contaminants with improved sensitivity, specificity, and reduced false alarms by concentrating and mixing a large air volume for analysis, achieving effective discrimination across a broad spectrum of behaviors.
Implementation Method 1
passing the column of air through a port in a parafoil, the parafoil configured with a flow-through sensor suite located in the port and operable such that the column of air passes through the sensor suite
Data Source
AI summary
A method for collecting and sensing a column of air in near real-time to detect one or more agents dispersed within the air column is described. The method includes passing the column of air through a port in a parafoil, the parafoil configured with a flow-through sensor suite located in the port and operable such that the column of air passes through the sensor suite, operating the sensor suite to test the column of air for the one or more agents, and receiving test results from the sensor suite.