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A Multi agent system for environmental friendly agriculture
By lakmali | March 17, 2010
R. Rupasinghe, A. Ranatunga, S. Rathnayake, A. Sajagahan and A. Karunananda
Environmental sustainability has become an important topic nowadays due to various adverse effects of natural systems which has caused the mankind to suffer in multi faceted difficulties. Achieving the environmental sustainability is not an individual effort but a collective effort of all the stake holders of a natural system. Therefore mankind should be able to work in harmony with natural processes in utilizing the environment without harming the sustainability.
Agriculture is a direct encounter of humans with the natural environment. Here, the challenge is to reap the maximum possible harvest in the most efficient manner while keeping up with the environmental sustainability. In addressing this issue we propose to incorporate modern agent technology for controlling an agricultural environment. Since we need a controlled environment we decided to select hydroponics, the technology of growing plants on a nutrient solution that supply all nutrient elements needed for optimum plant growth, in a greenhouse environment. We have built an adaptable hydroponics system with high level of autonomy with the help of a multi agent system. In doing so, we have combined embedded computer technology with the state of the art artificial intelligence. The system has a higher capacity of autonomous decision making in a dynamic environment. Decisions about activities to be performed by the actuators (dosing system, water control system etc.) were generated as an emergent property of interacting autonomous software components. Each of these software components represent a particular environmental parameter (nutrient level, pH level, temperature etc.) that is subjected to change dynamically. Each of these autonomous software components contains limited logical capabilities for interacting with nearby components in case of a change of the interested parameter. Therefore the decision will be emerge as a result of the interactions among individual software components with limited rationality. The advantage of this approach is that it enables the hydroponics system to become proactive to the environmental changes rather than being just a reactive entity.
The system has been evaluated using a domestic hydroponics environment. Firstly, we changed key parameters of the nutrient solution in an artificial manner to test how the system would react to those changes. For example, in the first scenario we reduce the water level and switch on the system. System was able to identify that and pumped the water up to the required level. Similar tests were conducted to ensure component testing. So we reduce the light, change EC / pH, change nutrient level. Also the system was evaluated through a comparative approach with the traditional agriculture. Five farmerswere utilized to obtain data about 6 six parameters for a period of 3 months. The test results showed a considerable improvement over the traditional agricultural practices. Therefore this research has shown that we could achieve a better harmony and sustainability with the natural environment by using the multi agent technology for controlling an agricultural environment.
R. Rupasinghe, A. Ranatunga, S. Rathnayake, A. Sajagahan and A. Karunananda
Faculty of Information Technology, University of Moratuwa, Sri Lanka.
Topics: Resource Management, sympoisum 2009 | 1 Comment »






May 8th, 2010 at 4:48 pm
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