Results 31 to 40 of about 24,720 (291)

Technical validation of the Predictive Optimal Water and Energy Irrigation (POWEIr) controller for solar-powered drip irrigation

open access: yesSmart Agricultural Technology
To feed the growing population, agriculture production must be intensified using existing resources. Sustainable agriculture intensification is particularly important in low and middle income countries (LMICs), which disproportionately experience food ...
Carolyn Sheline   +10 more
doaj   +1 more source

Model predictive control for precision irrigation of a Quinoa crop

open access: yesOpen Chemistry, 2022
Traditional High Andean agriculture is rainfed, and irrigation is commonly carried out in an open loop, that is, without measuring variables such as soil moisture content or plant development to define water consumption.
Beltrán Ccama Iván   +2 more
doaj   +1 more source

Steering of fogging: control of humidity: temperature or transpiration [PDF]

open access: yes, 2008
Fogging systems are increasingly used to cool greenhouses and prevent water stress. More recently, fogging systems are applied also in relatively low radiation environments (such as The Netherlands), for a better control of product quality than ...
Kempkes, F.L.K., Stanghellini, C.
core   +1 more source

A discrete sliding mode control strategy for precision agriculture irrigation management

open access: yesAgricultural Water Management
Control theory has been showing progress in its evolving exercise in precision agriculture for the search for optimized irrigation schemes regarding water saving.
Leonardo D. Garcia   +3 more
doaj   +1 more source

Irrigation controller mechanically actuated by soil-water tension: II - Field evaluations

open access: yesRevista Brasileira de Engenharia Agrícola e Ambiental
In this study, a field evaluation of the performance of an irrigation controller mechanically actuated by soil-water tension (SWT) was performed. The controller employs a tensiometer used as a sensor of SWT to directly control a mechanically actuated ...
Alexsandro C. S. Almeida   +5 more
doaj   +1 more source

An irrigation controller mechanically actuated by soil-water tension: I - Design, development and laboratory evaluations

open access: yesRevista Brasileira de Engenharia Agrícola e Ambiental
The objective of this study was to develop and evaluate an irrigation controller that was mechanically actuated by soil-water tension within laboratory conditions. The controller was designed and constructed using readily available hydraulic fittings and
Alexsandro C. S. Almeida   +5 more
doaj   +1 more source

Development and evaluation of automation system for irrigation scheduling in broccoli (Brassica oleracea)

open access: yesThe Indian Journal of Agricultural Sciences, 2021
The present study was attempted to develop an automated irrigation system for real-time irrigation management using soil moisture sensor, decision support system, level sensor, level controller, GSM receiver, transmitter, solenoid valve, water meter and
JITENDRA KUMAR   +7 more
doaj   +1 more source

Human-in-the-Loop Model Predictive Control of an Irrigation Canal [PDF]

open access: yes, 2015
Until now, advanced model-based control techniques have been predominantly employed to control problems that are relatively straightforward to model. Many systems with complex dynamics or containing sophisticated sensing and actuation elements can be ...
Camacho, Eduardo F.   +4 more
core  

A Structured Optimal Controller for Irrigation Networks

open access: yes2022 European Control Conference (ECC), 2022
In this paper, we apply an optimal LQ controller, which has an inherent structure that allows for a distributed implementation, to an irrigation network. The network consists of a water reservoir and connected water canals. The goal is to keep the levels close to the set-points when farmers take out water.
Martin Heyden   +2 more
openaire   +2 more sources

Smart Face Masks as Wearable Respiratory Sensors: A Review of Sensor Technologies, Materials, and Future Directions

open access: yesAdvanced Healthcare Materials, EarlyView.
This review highlights recent advances in smart face masks that actively monitor breathing. By integrating humidity, gas, temperature, pressure, strain, and triboelectric sensors, these masks track key respiratory parameters in real time. The article summarizes sensor mechanisms, compares performance across studies, and discusses challenges and future ...
Negin Faramarzi   +7 more
wiley   +1 more source

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