Sensor-Based Model Driven Control Strategy for Precision Irrigation

Abstract

Improving the efficiency of the agricultural irrigation systems substantially contributes to sustainable water management. This improvement can be achieved through an automated irrigation system that includes a real-time control strategy based on the water, soil, and crop relationship. This paper presents a model driven control strategy applied to an irrigation system, in order to make an efficient use of water for large crop fields, that is, applying the correct amount of water in the correct place at the right moment. The proposed model uses a predictive algorithm that senses soil moisture and weather variables, to determine optimal amount of water required by the crop. This proposed approach is evaluated against a traditional irrigation system based on the empirical definition of time periods and against a basic soil moisture control system. Results indicate that the use of a model predictive control in an irrigation system achieves a higher efficiency and significantly reduce the water consumption.

Dynamic modelling of lettuce transpiration for water status monitoring

“…System identification is a data-driven modelling approach which is applied in modelling dynamic systems (Chen and Chang, 2008). It has been successfully applied in simplifying and modelling complex environmental and biological processes (Taylor et al, 2007;Young, 2006), predicting time-varying biological responses (Kirchsteiger et al, 2011;Quanten et al, 2006) and in many other irrigation decision support applications (Delgoda et al, 2016;Lozoya et al, 2016). It is extensively applied as part of the fault detection methodologies in the advanced process control industry (Young, 2006).…”

COMS-Based Retrieval of Daily Actual Evapotranspiration over Korea

“…An ET of 1 mm/day is equivalent to a loss of 10,000 liters per hectare per day [1]. It is a phenomenon in which liquid water changes to vapor, resulting in the transfer of water and energy between land surfaces and the atmosphere.…”

An IoT based Control System for a Solar Membrane Distillation Plant used for Greenhouse Irrigation

“…It should be noted that in Eqs. (2)(3)(4)(5)(6)(7)(8)(9)(10) and hereinafter the nomenclature (t+k|t) in all the variables has been omitted for the sake of simplicity.…”

“…On the other hand, from greenhouses position, the control efforts are focused in the development of accurate irrigation control systems [10], [13]. Besides, some IoT based methods have been already proposed, as the one presented in [9], in which a smart water management method for precision irrigation was developed.…”