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Automated Wireless Greenhouse Management System
A Thesis submitted in partial fulfillment of the Requirements for the Degree of
In Electronics and Computer Systems By Quan Minh Vu
SCHOOL OF ENGINEERING AND ADVANCED TECHNOLOGY MASSEY UNIVERSITY PALMERSTON NORTH NEW ZEALAND June 2011
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ABSTRACT
Increases in greenhouse sizes have forced the growers to increase measurement points for tracking changes in the environment, thus enabling energy saving and more accurate adjustments. However, increases in measurement points mean increases in installation and maintenance cost. Not to mention, once the measurement points have been built and installed, they can be tedious to relocate in the future. Therefore, the purpose of this Masters thesis is to present a novel project called “Automated Wireless Greenhouse Climate Management System” which is capable of intelligently monitoring and controlling the greenhouse climate conditions in a preprogrammed manner. The proposed system consists of three stations: Sensor Station, Coordinator Station, and Central Station. To allow for better monitoring of the climate condition in the greenhouse, the sensor station is equipped with several sensor elements such as CO2, Temperature, humidity, light, soil moisture and soil temperature. The communication between the sensor station and the coordinator station is achieved via ZigBee wireless modules and the communication between coordinator station and the central station is achieved via long range RF modems. An important aspect of designing a wireless network is the reliability of data transmission. Therefore, it is important to ensure that the developed system will not lose packets during transmission. An experiment was
Automated Wireless Greenhouse Management System
A Thesis submitted in partial fulfillment of the Requirements for the Degree of
In Electronics and Computer Systems By Quan Minh Vu
SCHOOL OF ENGINEERING AND ADVANCED TECHNOLOGY MASSEY UNIVERSITY PALMERSTON NORTH NEW ZEALAND June 2011
~i~
~ ii ~
ABSTRACT
Increases in greenhouse sizes have forced the growers to increase measurement points for tracking changes in the environment, thus enabling energy saving and more accurate adjustments. However, increases in measurement points mean increases in installation and maintenance cost. Not to mention, once the measurement points have been built and installed, they can be tedious to relocate in the future. Therefore, the purpose of this Masters thesis is to present a novel project called “Automated Wireless Greenhouse Climate Management System” which is capable of intelligently monitoring and controlling the greenhouse climate conditions in a preprogrammed manner. The proposed system consists of three stations: Sensor Station, Coordinator Station, and Central Station. To allow for better monitoring of the climate condition in the greenhouse, the sensor station is equipped with several sensor elements such as CO2, Temperature, humidity, light, soil moisture and soil temperature. The communication between the sensor station and the coordinator station is achieved via ZigBee wireless modules and the communication between coordinator station and the central station is achieved via long range RF modems. An important aspect of designing a wireless network is the reliability of data transmission. Therefore, it is important to ensure that the developed system will not lose packets during transmission. An experiment was