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OpenVNT: An Open Platform for VIS-NIR Technology

Spectrometers measure diffuse reflectance and create a “molecular fingerprint” of the material under investigation. Ruggedized, small scale devices for “in-field” use cases exist. Such devices might for example be used by companies in the food supply chain for inward inspection of goods. However, th...

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Autores principales: Kulko, Roman-David, Pletl, Alexander, Mempel, Heike, Wahl, Florian, Elser, Benedikt
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2023
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10055953/
https://www.ncbi.nlm.nih.gov/pubmed/36991862
http://dx.doi.org/10.3390/s23063151
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author Kulko, Roman-David
Pletl, Alexander
Mempel, Heike
Wahl, Florian
Elser, Benedikt
author_facet Kulko, Roman-David
Pletl, Alexander
Mempel, Heike
Wahl, Florian
Elser, Benedikt
author_sort Kulko, Roman-David
collection PubMed
description Spectrometers measure diffuse reflectance and create a “molecular fingerprint” of the material under investigation. Ruggedized, small scale devices for “in-field” use cases exist. Such devices might for example be used by companies in the food supply chain for inward inspection of goods. However, their application for the industrial Internet of Things workflows or scientific research is limited due to their proprietary nature. We propose an open platform for visible and near-infrared technology (OpenVNT), an open platform for capturing, transmitting, and analysing spectral measurements. It is built for use in the field, as it is battery-powered and transmits data wireless. To achieve high accuracy, the OpenVNT instrument contains two spectrometers covering a wavelength range of 400–1700 nm. We conducted a study on white grapes to compare the performance of the OpenVNT instrument against the Felix Instruments F750, an established commercial instrument. Using a refractometer as ground truth, we built and validated models to estimate the Brix value. As a quality measure, we used coefficient of determination of the cross-validation ([Formula: see text]) between the instrument estimation and ground truth. With 0.94 for the OpenVNT and 0.97 for the F750, a comparable [Formula: see text] was achieved for both instruments. OpenVNT matches the performance of commercially available instruments at one tenth of the price. We provide an open bill of materials, building instructions, firmware, and analysis software to enable research and industrial IOT solutions without the limitations of walled garden platforms.
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spelling pubmed-100559532023-03-30 OpenVNT: An Open Platform for VIS-NIR Technology Kulko, Roman-David Pletl, Alexander Mempel, Heike Wahl, Florian Elser, Benedikt Sensors (Basel) Article Spectrometers measure diffuse reflectance and create a “molecular fingerprint” of the material under investigation. Ruggedized, small scale devices for “in-field” use cases exist. Such devices might for example be used by companies in the food supply chain for inward inspection of goods. However, their application for the industrial Internet of Things workflows or scientific research is limited due to their proprietary nature. We propose an open platform for visible and near-infrared technology (OpenVNT), an open platform for capturing, transmitting, and analysing spectral measurements. It is built for use in the field, as it is battery-powered and transmits data wireless. To achieve high accuracy, the OpenVNT instrument contains two spectrometers covering a wavelength range of 400–1700 nm. We conducted a study on white grapes to compare the performance of the OpenVNT instrument against the Felix Instruments F750, an established commercial instrument. Using a refractometer as ground truth, we built and validated models to estimate the Brix value. As a quality measure, we used coefficient of determination of the cross-validation ([Formula: see text]) between the instrument estimation and ground truth. With 0.94 for the OpenVNT and 0.97 for the F750, a comparable [Formula: see text] was achieved for both instruments. OpenVNT matches the performance of commercially available instruments at one tenth of the price. We provide an open bill of materials, building instructions, firmware, and analysis software to enable research and industrial IOT solutions without the limitations of walled garden platforms. MDPI 2023-03-15 /pmc/articles/PMC10055953/ /pubmed/36991862 http://dx.doi.org/10.3390/s23063151 Text en © 2023 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Kulko, Roman-David
Pletl, Alexander
Mempel, Heike
Wahl, Florian
Elser, Benedikt
OpenVNT: An Open Platform for VIS-NIR Technology
title OpenVNT: An Open Platform for VIS-NIR Technology
title_full OpenVNT: An Open Platform for VIS-NIR Technology
title_fullStr OpenVNT: An Open Platform for VIS-NIR Technology
title_full_unstemmed OpenVNT: An Open Platform for VIS-NIR Technology
title_short OpenVNT: An Open Platform for VIS-NIR Technology
title_sort openvnt: an open platform for vis-nir technology
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10055953/
https://www.ncbi.nlm.nih.gov/pubmed/36991862
http://dx.doi.org/10.3390/s23063151
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