&lt;title&gt;Characterization of filtered FLIR systems designed for chemical vapor detection and mapping&lt;/title&gt;

Carr, Lewis W.; Fletcher, Leland; Holland, P.; Leonelli, Joseph; McPherrin, David; Althouse, Mark L.G.

doi:10.1117/12.21788

Cited by 4 publications

(2 citation statements)

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“…Others have used IR to look at the heat profiles of brood nests and heater bees [ 102 , 103 ]. The use of IR for chemical vapor detection was documented in 1990 by Carr et al [ 104 ]. Their paper describes the test and analysis of spectrally modified thermal-imaging systems designed to detect chemical vapor clouds.…”

Section: Technological Advancements In Bee-based Biosensors/biomonmentioning

confidence: 99%

Bees as Biosensors: Chemosensory Ability, Honey Bee Monitoring Systems, and Emergent Sensor Technologies Derived from the Pollinator Syndrome

et al. 2015

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This review focuses on critical milestones in the development path for the use of bees, mainly honey bees and bumble bees, as sentinels and biosensors. These keystone species comprise the most abundant pollinators of agro-ecosystems. Pollinating 70%–80% of flowering terrestrial plants, bees and other insects propel the reproduction and survival of plants and themselves, as well as improve the quantity and quality of seeds, nuts, and fruits that feed birds, wildlife, and us. Flowers provide insects with energy, nutrients, and shelter, while pollinators are essential to global ecosystem productivity and stability. A rich and diverse milieu of chemical signals establishes and maintains this intimate partnership. Observations of bee odor search behavior extend back to Aristotle. In the past two decades great strides have been made in methods and instrumentation for the study and exploitation of bee search behavior and for examining intra-organismal chemical communication signals. In particular, bees can be trained to search for and localize sources for a variety of chemicals, which when coupled with emerging tracking and mapping technologies create novel potential for research, as well as bee and crop management.

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Section: Technological Advancements In Bee-based Biosensors/biomonmentioning

confidence: 99%

Bees as Biosensors: Chemosensory Ability, Honey Bee Monitoring Systems, and Emergent Sensor Technologies Derived from the Pollinator Syndrome

et al. 2015

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“…The integration of a spectral filter into an IR focal plane array (FPA) based sensor provides the spectral resolution requisite to identify the spectral signatures of specific chemical compounds and the radiometric accuracy necessary to obtain quantitatively accurate measurements of chemical plume column density. Previous efforts to provide imaging capability for chemical vapors focussed largely on the use of filter wheels in conjunction with forwardlooking IR (FLIR) sensors [1][2][3][4] . In contrast to filter wheel-based imagers, the transmission wavelength of a tunable etalon is continously variable.…”

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confidence: 99%

Tunable Fabry–Perot etalon-based long-wavelength infrared imaging spectroradiometer

et al. 1999

Appl. Opt.

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Imaging spectrometry enables passive, stand-off detection and analysis of the chemical composition of gas plumes and surfaces over wide geographic areas. We describe the use of a long-wavelength infrared imaging spectroradiometer, comprised of a low-order tunable Fabry-Perot etalon coupled to a HgCdTe detector array, to perform multispectral detection of chemical vapor plumes. The tunable Fabry-Perot etalon used in this research provides coverage of the 9.5-14-microm spectral region with a resolution of 7-9 cm(-1). The etalon-based imaging system provides the opportunity to image a scene at only those wavelengths needed for chemical species identification and quantification and thereby minimize the data volume necessary for selective species detection. We present initial results using a brassboard imaging system for stand-off detection and quantification of chemical vapor plumes against near-ambient-temperature backgrounds. These data show detection limits of 22 parts per million by volume times meter (ppmv x m) and 0.6 ppmv x m for dimethyl methyphosphonate and SF6, respectively, for a gas/background DeltaT of 6 K. The system noise-equivalent spectral radiance is approximately 2 microW cm(-2) sr(-1) microm(-1). Model calculations are presented comparing the measured sensitivity of the sensor to the anticipated signal levels for two chemical release scenarios.

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Gas identification and estimation of its concentration in a tube using thermographic camera with diffraction grating

Olbrycht

Kałuża

Wittchen

et al. 2017

Quantitative InfraRed Thermography Journal

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<title>Characterization of filtered FLIR systems designed for chemical vapor detection and mapping</title>

Cited by 4 publications

References 0 publications

Bees as Biosensors: Chemosensory Ability, Honey Bee Monitoring Systems, and Emergent Sensor Technologies Derived from the Pollinator Syndrome

Bees as Biosensors: Chemosensory Ability, Honey Bee Monitoring Systems, and Emergent Sensor Technologies Derived from the Pollinator Syndrome

Tunable Fabry–Perot etalon-based long-wavelength infrared imaging spectroradiometer

Gas identification and estimation of its concentration in a tube using thermographic camera with diffraction grating

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