Abstract
Real time measurement of soil pH is demanded in precision agriculture. Therefore, pH measurement capability in low water content soil was needed to confirm. In this paper, we fabricated an ISFET type pH sensor which can be inserted into soil. The sensor performed to measure two type of experiments. First, we experimented with changes in sensor output due to soil water content. The sensor output voltages were changed by changes in the soil pH value. In contrast, the voltages didn't be changed by changes in the soil water content. Secondly, we experimented whether the output of the sensor shows the same change when the soil pH changes during the measurement. The sensor could detect the pH value of soil which was changed dramatically by passing water. We confirmed that the ISFET type pH sensor can directly measure soil pH in real time.
| Original language | English |
|---|---|
| Pages (from-to) | 417-422 |
| Number of pages | 6 |
| Journal | IEEJ Transactions on Sensors and Micromachines |
| Volume | 138 |
| Issue number | 9 |
| DOIs | |
| Publication status | Published - Jan 1 2018 |
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Keywords
- Directly measurement
- Electrical potential of water
- Low water content
- Ph sensor
- Soil
ASJC Scopus subject areas
- Mechanical Engineering
- Electrical and Electronic Engineering
Cite this
Study of a semiconductor type pH sensor to measure low water content soils in real-time. / Futagawa, Masato; Uemura, Keisuke; Nomiyama, Kumiko; Hirano, Harutoyo; Watanabe, Minoru; Komatsu, Mitsuru.
In: IEEJ Transactions on Sensors and Micromachines, Vol. 138, No. 9, 01.01.2018, p. 417-422.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Study of a semiconductor type pH sensor to measure low water content soils in real-time
AU - Futagawa, Masato
AU - Uemura, Keisuke
AU - Nomiyama, Kumiko
AU - Hirano, Harutoyo
AU - Watanabe, Minoru
AU - Komatsu, Mitsuru
PY - 2018/1/1
Y1 - 2018/1/1
N2 - Real time measurement of soil pH is demanded in precision agriculture. Therefore, pH measurement capability in low water content soil was needed to confirm. In this paper, we fabricated an ISFET type pH sensor which can be inserted into soil. The sensor performed to measure two type of experiments. First, we experimented with changes in sensor output due to soil water content. The sensor output voltages were changed by changes in the soil pH value. In contrast, the voltages didn't be changed by changes in the soil water content. Secondly, we experimented whether the output of the sensor shows the same change when the soil pH changes during the measurement. The sensor could detect the pH value of soil which was changed dramatically by passing water. We confirmed that the ISFET type pH sensor can directly measure soil pH in real time.
AB - Real time measurement of soil pH is demanded in precision agriculture. Therefore, pH measurement capability in low water content soil was needed to confirm. In this paper, we fabricated an ISFET type pH sensor which can be inserted into soil. The sensor performed to measure two type of experiments. First, we experimented with changes in sensor output due to soil water content. The sensor output voltages were changed by changes in the soil pH value. In contrast, the voltages didn't be changed by changes in the soil water content. Secondly, we experimented whether the output of the sensor shows the same change when the soil pH changes during the measurement. The sensor could detect the pH value of soil which was changed dramatically by passing water. We confirmed that the ISFET type pH sensor can directly measure soil pH in real time.
KW - Directly measurement
KW - Electrical potential of water
KW - Low water content
KW - Ph sensor
KW - Soil
UR - http://www.scopus.com/inward/record.url?scp=85052621113&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85052621113&partnerID=8YFLogxK
U2 - 10.1541/ieejsmas.138.417
DO - 10.1541/ieejsmas.138.417
M3 - Article
AN - SCOPUS:85052621113
VL - 138
SP - 417
EP - 422
JO - IEEJ Transactions on Sensors and Micromachines
JF - IEEJ Transactions on Sensors and Micromachines
SN - 1341-8939
IS - 9
ER -