Design and calibration of a low-cost SDI-12 soil moisture sensor
Water is the main limiting factor in agricultural production as well as a scarce resource that needs to be optimized. The measurement of soil water with sensors is an efficient way for optimal irrigation management. However, commercial sensors are still too expensive for most farmers. This paper pre...
| Autores: | , , , , , |
|---|---|
| Tipo de recurso: | artículo |
| Estado: | Versión publicada |
| Fecha de publicación: | 2019 |
| País: | España |
| Institución: | Universidad Politécnica de Cartagena(UPCT) |
| Repositorio: | Repositorio Digital UPCT |
| OAI Identifier: | oai:repositorio.upct.es:10317/13232 |
| Acceso en línea: | http://hdl.handle.net/10317/13232 https://www.mdpi.com/1424-8220/19/3/491 |
| Access Level: | acceso abierto |
| Palabra clave: | soil moisture Precision Agriculture sensor calibration SDI-12 volumetric water content capacitive sensor dielectric measurement Smart Agriculture Ingeniería Agroforestal 3311.07 Instrumentos Electrónicos 3307.03 Diseño de Circuitos 3103 Agronomía |
| Sumario: | Water is the main limiting factor in agricultural production as well as a scarce resource that needs to be optimized. The measurement of soil water with sensors is an efficient way for optimal irrigation management. However, commercial sensors are still too expensive for most farmers. This paper presents the design, development and calibration of a new capacitive low-cost soil moisture sensor that incorporates SDI-12 communication, allowing one to select the calibration equation for different soils. The sensor was calibrated in three different soils and its variability and accuracy were evaluated. Lower but cost-compensated accuracy was observed in comparing it with commercial sensors. Field tests have demonstrated the temperature influence on the sensor and its capability to efficiently detect irrigation and rainfall events. |
|---|