A COMPUTER-BASED CONTROL SYSTEM FOR GREENHOUSE ENVIRONMENT: PART I - DESIGN AND IMPLEMENTATION OF SYSTEM

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OMID M.; SHAFAEI A.

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Paper Information

Journal: JOURNAL OF AGRICULTURAL ENGINEERING RESEARCH Year:2005 | Volume:6 | Issue:23 Page(s): 20-20

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Information Journal Paper

Title

A COMPUTER-BASED CONTROL SYSTEM FOR GREENHOUSE ENVIRONMENT: PART I - DESIGN AND IMPLEMENTATION OF SYSTEM

Author(s)

OMID M. | SHAFAEI A. | Issue Writer Certificate

Keywords

GREENHOUSEQ2

CONTROLQ4

MONITORINGQ4

COMPUTERQ4

MICROCONTROLLERQ4

TEMPERATURE AND HUMIDITY CONTROLQ4

Abstract

The present study is concerned with the design and implementation of a COMPUTER-based CONTROL and MONITORING system for GREENHOUSEs. For conducting the field experiments a model GREENHOUSE with a floor area of 8 m2, (2×4 m) was constructed. It was covered with double inflated 200 m polyethylene films. Performance of the CONTROLler under different environmental conditions was evaluated by installing the system in the model GREENHOUSE. Main components of the system are sensors, a MICROCONTROLLER, a number of actuators, data processing unit, and data acquisition and recording device. The MICROCONTROLLER receives data on GREENHOUSE environmental conditions from a number of sensors installed inside as well as outside the GREENHOUSE and transfers the data to and from a PC via RS 232 port. A graphical user interface was also developed to carry out the MONITORING tasks. The program implements the CONTROL algorithms, comparing the received data with set points, sending CONTROL signals to the MICROCONTROLLER so as to change the states in CONTROL devices, namely, heaters, fans, misters, etc., in order to attain the desired set points. To evaluate system performance, a set of experiments were carried out during autumn 2003, in the faculty of agriculture, Karaj. The overall performance of the system in CONTROLling GREENHOUSE air temperature was very satisfactory. The time constant to bring the temperature within the set points was about 10 minutes.

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APA: Copy

OMID, M., & SHAFAEI, A.. (2005). A COMPUTER-BASED CONTROL SYSTEM FOR GREENHOUSE ENVIRONMENT: PART I - DESIGN AND IMPLEMENTATION OF SYSTEM. JOURNAL OF AGRICULTURAL ENGINEERING RESEARCH, 6(23), 20-20. SID. https://sid.ir/paper/28261/en

Vancouver: Copy

OMID M., SHAFAEI A.. A COMPUTER-BASED CONTROL SYSTEM FOR GREENHOUSE ENVIRONMENT: PART I - DESIGN AND IMPLEMENTATION OF SYSTEM. JOURNAL OF AGRICULTURAL ENGINEERING RESEARCH[Internet]. 2005;6(23):20-20. Available from: https://sid.ir/paper/28261/en

IEEE: Copy

M. OMID, and A. SHAFAEI, “A COMPUTER-BASED CONTROL SYSTEM FOR GREENHOUSE ENVIRONMENT: PART I - DESIGN AND IMPLEMENTATION OF SYSTEM,” JOURNAL OF AGRICULTURAL ENGINEERING RESEARCH, vol. 6, no. 23, pp. 20–20, 2005, [Online]. Available: https://sid.ir/paper/28261/en

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