Sistema De Monitoreo Y Control Para Invernadero Usando La Unidad De Adquisición De Datos Agilet 34970a E Interfaz En Labview

This paper describes the construction and design of a semi-automated climate monitoring and control system for a small-scale greenhouse, using sensors and actuators strategically placed inside and outside the greenhouse to monitor and regulate the environmental variables of temperature, luminosity, humidity , carbon monoxide concentration and natural ventilation. The sensors and actuators are linked to a virtual LabVIEW instrument through the Agilent 34970A data acquisition unit, where the user can graphically observe the climate inside the greenhouse and take action on it. The actuators are governed by control schemes of two positions and proportional-integral-derivative (PID). The communication between the data acquisition card and the LabVIEW virtual instrument is carried out using the GPIB communication protocol