TY  - RPRT
U1  - Arbeitspapier
A1  - Riedel, Vadim
A1  - Hinck, Stefan
A1  - Peiter, Edgar
A1  - Ruckelshausen, Arno
T1  - Handling of Ion-Selective Field-Effect Transistors (ISFETs) on Automatic Measurements in Agricultural Applications Under Real-Field Conditions
T2  - Electronics
N2  - The use of ion-selective field-effect transistors (ISFETs) facilitates real-time nutrient analysis in agricultural applications, including soil analysis and hydroponics. The rapid digital availability of analysis results allows for the implementation of ion-specific fertilisation control. The success, accuracy, and robustness of measurements using ISFET technology strongly depend on the handling of the process. This article presents a detailed overview of the sub-process steps required for the implementation of a stable automated application-specific ISFET-based measurement. This article provides experience-based recommendations for handling the conditioning, full calibration, and single-point calibration of the ISFET sensors. The hypotheses were empirically tested under authentic conditions and subsequently integrated into an overall process optimisation strategy. A comprehensive investigation has been conducted with the objective of gaining a deeper understanding of the ISFET baseline drift and implementing corrective measures. The results show that the baseline drift can be quantified and taken into account in the evaluation of the ISFET measurements. The efficacy of these measures was validated using standard laboratory analyses.
KW  - Ion-selective sensor
KW  - ISFET
KW  - Agricultural sensor technology
KW  - Real-time nutrient analysis
KW  - Soil nutrients analysis
KW  - Hydroponics
KW  - Nutrients control
KW  - Handling
KW  - Calibration
KW  - Offset correction
Y1  - 2024
UN  - https://nbn-resolving.org/urn:nbn:de:bsz:959-opus-68615
UR  - https://www.mdpi.com/2079-9292/13/24/4958
SN  - 2079-9292
SS  - 2079-9292
U6  - https://doi.org/10.3390/electronics13244958
DO  - https://doi.org/10.3390/electronics13244958
VL  - 13
IS  - 24
SP  - 30
S1  - 30
PB  - MDPI AG
ER  -