The Development of the Information System to Control the Automatic Solar-Powered Aerator
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Abstract
The aerator is a machine used to add oxygen level in water, which will improve water quality and enhance the fertility of water resource. Nowadays most aerators depend on engines or electricity to add oxygen to water. As a result, the costs of energy and maintenance are high due to ongoing usage of the machine. This research aims to develop the information system to control the automatically computerized solar aerator. The design and development of the information system are based on the system development life cycle (SDLC). The efficiency of the system is evaluated both in the laboratory and in natural water resources by conducting the proportional testing to measure the accuracy of the system against predefined criteria with the minimum requirement of 90% at the significance level of .05 level of confidence. The research collected oxygen levels, pH levels, and temperature in the natural water resources for a total of 100 instances and found that the developed information system could control and commanded the machine to add oxygen when the oxygen level in the water fell below the required threshold. The developed information system could stop the aerator when the oxygen level reached or exceeded the required threshold. In addition, the developed information system could present results in a graphical format. For the efficiency evaluation of the information system in the laboratory, the sensors were conducted to measure oxygen, pH, and temperature 3 times. The measurements were accurate according to the predefined standards. When conducting the efficiency evaluation in the natural water resources, the developed information system could command the machine to operate and stop the air replenishment automatically. Oxygen (Z=L.33), pH levels (Z=2.66), and water temperature (Z=3.33) were measured accurately according to predefined criteria with the significance level of more than 90% at the .05 level of confidence. Farmers can utilize the automatic solar-powered aerator to treat waste water for aquaculture in remote areas where electricity is unavailable and/or to lower costs of electricity in the long term.
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