Validation on Performance of Soil Moisture Sensor using Weighing Porous Ceramic Cone Filled with Soil

Ki-Deog Kim; Jong-Taek Suh; Dong-Lim Yoo; Chang-Seok Kim; Sam-Nyu Jee; Soon-Choon Hong; Sung Kyeom Kim

doi:10.12791/KSBEC.2021.30.2.157

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2021 Vol.30, Issue 2 Preview Page Next Page

Original Articles

Validation on Performance of Soil Moisture Sensor using Weighing Porous Ceramic Cone Filled with Soil 다공질 세라믹 추를 이용한 중량 토양수분함량 측정 센서의 성능 검증

30 April 2021. pp. 157-164

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Abstract

A simple soil moisture measurement method based on the weight of soil cone was developed. Soil cone is a conical porous ceramic cup filled with soil. In the three soil samples (fine sandy soil, silt loam, and sandy loam), the soil moisture content by core method and FDR (Frequency domain reflectometry) method showed a linear relationship with the regression coefficients of 0.92 - 0.98 and 0.97 - 0.99, respectively. The volumetric moisture content of the soil inside the soil cone to the soil cone water weight and the FDR sensor value showed a relationship with regression coefficient of 0.96 and 0.97, respectively. The relationship between the soil cone weight and the FDR sensor value (r² = 0.99, p < 0.001) was highly significant. Therefore, it was possible to measure soil moisture content by weighing of soil cone.

Keywords

Frequency domain reflectometry sensor

Soil water content

soil cone

Tensiometer

Time domain reflectometry sensor

토양 콘의 무게를 기반으로 한 간단한 토양 수분 측정 방법이 개발되었다. 토양 콘은 토양으로 채워진 원추형 다공성 세라믹 컵이다. 세 가지 토양 샘플에서 코어 방법과 FDR (Frequency Domain reflectometry) 방법에 의한 토양 수분 함량은 직선 회귀식의 결정계수가 각각 0.92－0.98 및 0.97－0.99였으며, 선형 관계였다. 토양 세라믹 콘 내부 토양의 체적 수분 함량과 콘 내부 토양 수분 중량 및 FDR의 센서 값의 회귀결과 결정계수가 각각 0.96 및 0.97였다. 토양 콘 중량과 FDR 센서 값(r² = 0.99, p < 0.001) 사이는 높은 유의한 상관관계가 있었다. 따라서 토양 콘의 무게를 측정하여 토양 수분 함량을 측정할 수 있었다.

키워드

유전율센서

토양수분함량

토양 콘

텐시오미터

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Information

Publisher :The Korean Society for Bio-Environment Control
Publisher(Ko) :(사)한국생물환경조절학회
Journal Title :Journal of Bio-Environment Control
Journal Title(Ko) :생물환경조절학회지
Volume : 30
No :2
Pages :157-164
Received Date : 2021-02-25
Revised Date : 2021-04-13
Accepted Date : 2021-04-23
DOI :https://doi.org/10.12791/KSBEC.2021.30.2.157

Journal of Bio-Environment Control ISSN:1229-4675(Print) 2765-3641(Online) 생물환경조절학회지

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