Design and operation of a human color vision inspired sensor for proximate standoff detection

Kevin J. Major; Jasbinder S. Sanghera; L. Brandon Shaw; Kenneth J. Ewing

doi:10.1117/12.2558802

19 May 2020 Design and operation of a human color vision inspired sensor for proximate standoff detection

Kevin J. Major, Jasbinder S. Sanghera, L. Brandon Shaw, Kenneth J. Ewing

Proceedings Volume 11416, Chemical, Biological, Radiological, Nuclear, and Explosives (CBRNE) Sensing XXI; 114160B (2020) https://doi.org/10.1117/12.2558802
Event: SPIE Defense + Commercial Sensing, 2020, Online Only

Abstract

The proliferation of chemical threats in the modern world requires the development of new, low cost, flexible sensors, with the ability to be widely deployed. Ideally these sensors will be capable of both proximate and standoff sensing of threats (i.e. not require intimate contact with the chemical) without the need for highly trained/specialized operators. To meet this unique set of requirements, we are developing a bio-inspired chemical sensing method modeled on human color vision. This bio-inspired approach provides the ability to quickly and reliably discriminate between chemicals based on the interaction of infrared chemical absorption bands with selected broadband infrared filters. Here we describe the capabilities of a prototype bio-inspired sensor for standoff detection of threat chemicals on surfaces versus common interferents. We discuss the design and operation of the bio-inspired sensor and preliminary data demonstrating its ability to discriminate between a nerve agent simulant dimethyl methylphosphonate (DMMP) and the common background interferent US Army insect repellant (containing N,N-Diethyl-meta-toluamide (DEET)) in a laboratory environment. We discuss paths forward for this technology, as well as how the bio-inspired sensing approach can result in high-confidence discrimination of threats at proximate standoff distances.

Conference Presentation

Citation Download Citation

Kevin J. Major, Jasbinder S. Sanghera, L. Brandon Shaw, and Kenneth J. Ewing "Design and operation of a human color vision inspired sensor for proximate standoff detection", Proc. SPIE 11416, Chemical, Biological, Radiological, Nuclear, and Explosives (CBRNE) Sensing XXI, 114160B (19 May 2020); https://doi.org/10.1117/12.2558802

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