An Opto-Electronic Sensor for Detecting Soil Microarthropods and Estimating Their Size in Field Conditions

Methods to estimate density of soil-dwelling arthropods efficiently, accurately and continuously are critical for investigating soil biological activity and evaluating soil management practices. Soil-dwelling arthropods are currently monitored manually. This method is invasive, and time- and labor-c...

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Main Authors: Csongor I. Gedeon, Norbert Flórián, Péter Liszli, Beáta Hambek-Oláh, Oxána Bánszegi, Judit Schellenberger, Miklós Dombos
Format: Article
Language:English
Published: MDPI AG 2017-08-01
Series:Sensors
Subjects:
Online Access:https://www.mdpi.com/1424-8220/17/8/1757
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author Csongor I. Gedeon
Norbert Flórián
Péter Liszli
Beáta Hambek-Oláh
Oxána Bánszegi
Judit Schellenberger
Miklós Dombos
author_facet Csongor I. Gedeon
Norbert Flórián
Péter Liszli
Beáta Hambek-Oláh
Oxána Bánszegi
Judit Schellenberger
Miklós Dombos
author_sort Csongor I. Gedeon
collection DOAJ
description Methods to estimate density of soil-dwelling arthropods efficiently, accurately and continuously are critical for investigating soil biological activity and evaluating soil management practices. Soil-dwelling arthropods are currently monitored manually. This method is invasive, and time- and labor-consuming. Here we describe an infrared opto-electronic sensor for detection of soil microarthropods in the size range of 0.4–10 mm. The sensor is built in a novel microarthropod trap designed for field conditions. It allows automated, on-line, in situ detection and body length estimation of soil microarthropods. In the opto-electronic sensor the light source is an infrared LED. Two plano-convex optical lenses are placed along the virtual optical axis. One lens on the receiver side is placed between the observation space at 0.5–1 times its focal length from the sensor, and another emitter side lens is placed between the observation space and the light source in the same way. This paper describes the setup and operating mechanism of the sensor and the control unit, and through basic tests it demonstrates its potential in automated detection of soil microarthropods. The sensor may be used for monitoring activities, especially for remote observation activities in soil and insect ecology or pest control.
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spelling doaj.art-4fcb86d208aa495985099c16e62758222022-12-22T04:03:47ZengMDPI AGSensors1424-82202017-08-01178175710.3390/s17081757s17081757An Opto-Electronic Sensor for Detecting Soil Microarthropods and Estimating Their Size in Field ConditionsCsongor I. Gedeon0Norbert Flórián1Péter Liszli2Beáta Hambek-Oláh3Oxána Bánszegi4Judit Schellenberger5Miklós Dombos6Institute for Soil Sciences and Agricultural Chemistry, Centre for Agricultural Research, Hungarian Academy of Sciences, Herman Ottó út 15, H-1022 Budapest, HungaryInstitute for Soil Sciences and Agricultural Chemistry, Centre for Agricultural Research, Hungarian Academy of Sciences, Herman Ottó út 15, H-1022 Budapest, HungaryDeákdelta Ltd. Irinyi János u. 1, H-6727 Szeged, HungaryDepartment of Physical Geography and Geoinformatics, University of Szeged, Egyetem u. 2., 6722 Szeged, HungaryInstituto de Investigaciones Biomédicas, Universidad Nacional Autónoma de México, AP 70228, CP 04510 Ciudad de México, MexicoInstitute for Soil Sciences and Agricultural Chemistry, Centre for Agricultural Research, Hungarian Academy of Sciences, Herman Ottó út 15, H-1022 Budapest, HungaryInstitute for Soil Sciences and Agricultural Chemistry, Centre for Agricultural Research, Hungarian Academy of Sciences, Herman Ottó út 15, H-1022 Budapest, HungaryMethods to estimate density of soil-dwelling arthropods efficiently, accurately and continuously are critical for investigating soil biological activity and evaluating soil management practices. Soil-dwelling arthropods are currently monitored manually. This method is invasive, and time- and labor-consuming. Here we describe an infrared opto-electronic sensor for detection of soil microarthropods in the size range of 0.4–10 mm. The sensor is built in a novel microarthropod trap designed for field conditions. It allows automated, on-line, in situ detection and body length estimation of soil microarthropods. In the opto-electronic sensor the light source is an infrared LED. Two plano-convex optical lenses are placed along the virtual optical axis. One lens on the receiver side is placed between the observation space at 0.5–1 times its focal length from the sensor, and another emitter side lens is placed between the observation space and the light source in the same way. This paper describes the setup and operating mechanism of the sensor and the control unit, and through basic tests it demonstrates its potential in automated detection of soil microarthropods. The sensor may be used for monitoring activities, especially for remote observation activities in soil and insect ecology or pest control.https://www.mdpi.com/1424-8220/17/8/1757wireless sensormonitoring systemautomated sensingsoil microarthropodssoil monitoringsoil biodiversitydetectionsize estimationEDAPHOLOG
spellingShingle Csongor I. Gedeon
Norbert Flórián
Péter Liszli
Beáta Hambek-Oláh
Oxána Bánszegi
Judit Schellenberger
Miklós Dombos
An Opto-Electronic Sensor for Detecting Soil Microarthropods and Estimating Their Size in Field Conditions
Sensors
wireless sensor
monitoring system
automated sensing
soil microarthropods
soil monitoring
soil biodiversity
detection
size estimation
EDAPHOLOG
title An Opto-Electronic Sensor for Detecting Soil Microarthropods and Estimating Their Size in Field Conditions
title_full An Opto-Electronic Sensor for Detecting Soil Microarthropods and Estimating Their Size in Field Conditions
title_fullStr An Opto-Electronic Sensor for Detecting Soil Microarthropods and Estimating Their Size in Field Conditions
title_full_unstemmed An Opto-Electronic Sensor for Detecting Soil Microarthropods and Estimating Their Size in Field Conditions
title_short An Opto-Electronic Sensor for Detecting Soil Microarthropods and Estimating Their Size in Field Conditions
title_sort opto electronic sensor for detecting soil microarthropods and estimating their size in field conditions
topic wireless sensor
monitoring system
automated sensing
soil microarthropods
soil monitoring
soil biodiversity
detection
size estimation
EDAPHOLOG
url https://www.mdpi.com/1424-8220/17/8/1757
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