Design And Construction Of A Computer Aided Control And Monitoring System For Greenhouses
ABSTRACT
High expenditure is one the major disadvantages of using human or labor work force in agriculture division. Lack of accurate and precise processing, low working speed and the effect of physical tiredness on their efficiency are same other disadvantages. Using modern technology and replacing human work force with the automated mechanisms and instruments or intelligent machinery leads to the reduction of these expenses, enhancement of precision, accuracy and work speed and finally increase productivity, quality and quantity of crop production.
This automated system is created using basic parts of suitable sensors, PC hardware and written software, proper power supply, measuring and control parts as well as a calibration program for accessing above purposes. Having this continuous control and monitoring system and installation in a greenhouse we will be able to measure and control some important and vital variable parameters i.e. temperature, air relative humidity, soil moisture content and light intensity automatically. Thus, if the degree of existence of these parameters goes up and down from permitted limit, the related designed utility systems would be activated to control them automatically.
This system also would be inactivated when the variable parameters fit in the admitted limit. Meanwhile, whenever one of the variables value enters the critical zone, an alarm (if connected to the system) would go on to quit proper circuit.
This is an electro-computerized system which measures each variable parameter via frequency with minimum pulses noise within a complicated processing circuit, saves its values and draws the related diagrams precisely too. The final evaluated workshop tests showed this facility has excellent flexibility for calibration and timing setup via programmable software that might be used for specific research purposes, following the events and changing the effective factors even more required ones than in this project inside any developed commercial greenhouse size.
High expenditure is one the major disadvantages of using human or labor work force in agriculture division. Lack of accurate and precise processing, low working speed and the effect of physical tiredness on their efficiency are same other disadvantages. Using modern technology and replacing human work force with the automated mechanisms and instruments or intelligent machinery leads to the reduction of these expenses, enhancement of precision, accuracy and work speed and finally increase productivity, quality and quantity of crop production.
This automated system is created using basic parts of suitable sensors, PC hardware and written software, proper power supply, measuring and control parts as well as a calibration program for accessing above purposes. Having this continuous control and monitoring system and installation in a greenhouse we will be able to measure and control some important and vital variable parameters i.e. temperature, air relative humidity, soil moisture content and light intensity automatically. Thus, if the degree of existence of these parameters goes up and down from permitted limit, the related designed utility systems would be activated to control them automatically.
This system also would be inactivated when the variable parameters fit in the admitted limit. Meanwhile, whenever one of the variables value enters the critical zone, an alarm (if connected to the system) would go on to quit proper circuit.
This is an electro-computerized system which measures each variable parameter via frequency with minimum pulses noise within a complicated processing circuit, saves its values and draws the related diagrams precisely too. The final evaluated workshop tests showed this facility has excellent flexibility for calibration and timing setup via programmable software that might be used for specific research purposes, following the events and changing the effective factors even more required ones than in this project inside any developed commercial greenhouse size.
