A novel approach to obtain PAR with a multi-channel spectral microsensor, suitable for sensor node integration

Abstract: We propose a novel approach to measure photosynthetically active radiation (PAR ) in the form of photosynthetic photon flux density with an inexpensive, small multi-channel spectrometer sensor, with integrated optical filters and analog-to-digital converter. Our experiments prove that the combination of eight spectral channels with different optical sensitivities, such as the sensorchip in use (AS7341, ams), derive the PAR with an accuracy of 14/m2/s. Enabled by the sensor architecture, additional information about the light quality can be retrieved which is expressed in the RLQI. A calibration method is proposed, and exemplary measurements are performed. Moreover, the integration in a solar-powered wireless sensor node is outlined, which enables long-term field experiments with high sensor densities and may be used to obtain important indexes, such as the GPP

Standort
Deutsche Nationalbibliothek Frankfurt am Main
Umfang
Online-Ressource
Sprache
Englisch
Anmerkungen
Sensors. - 21, 10 (2021) , 3390, ISSN: 1424-8220

Ereignis
Veröffentlichung
(wo)
Freiburg
(wer)
Universität
(wann)
2021
Urheber

DOI
10.3390/s21103390
URN
urn:nbn:de:bsz:25-freidok-2180671
Rechteinformation
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Letzte Aktualisierung
25.03.2025, 13:46 MEZ

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Beteiligte

Entstanden

  • 2021

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