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http://dx.doi.org/10.5532/KJAFM.2022.24.2.95

Unmanned Multi-Sensor based Observation System for Frost Detection - Design, Installation and Test Operation  

Kim, Suhyun (National Center for AgroMeteorology)
Lee, Seung-Jae (National Center for AgroMeteorology)
Son, Seungwon (National Center for AgroMeteorology)
Cho, Sungsik (National Center for AgroMeteorology)
Jo, Eunsu (National Institute of Meteorological Sciences)
Kim, Kyurang (National Institute of Meteorological Sciences)
Publication Information
Korean Journal of Agricultural and Forest Meteorology / v.24, no.2, 2022 , pp. 95-114 More about this Journal
Abstract
This study presented the possibility of automatic frost observation and the related image data acquisition through the design and installation of a Multiple-sensor based Frost Observation System (MFOS). The MFOS is composed of an RGB camera, a thermal camera and a leaf wetness sensor, and each device performs complementary roles. Through the test operation of the equipment before the occurrence of frost, the voltage value of the leaf wetness sensor increased when maintaining high relative humidity in the case of no precipitation. In the case of Gapyeong- gun, the high relative humidity was maintained due to the surrounding agricultural waterways, so the voltage value increased significantly. In the RGB camera image, leaf wetness sensor and the surface were not observed before sunrise and after sunset, but were observed for the rest of the time. In the case of precipitation, the voltage value of the leaf wetness sensor rapidly increased during the precipitation period and decreased after the precipitation was terminated. In the RGB camera image, the leaf wetness sensor and surface were observed regardless of the precipitation phenomenon, but the thermal camera image was taken due to the precipitation phenomenon, but the leaf wetness sensor and surface were not observed. Through, where actual frost occurred, it was confirmed that the voltage value of leaf wetness sensor was higher than the range corresponding to frost, but frost was observed on the surface and equipment surface by the RGB camera.
Keywords
Forest observation; Leaf wetness sensor; RGB camera; Thermal camera;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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