Development of greenhouse autonomous control system for Home Agriculture project

Abstract

This paper presents two autonomous control designs for Home Agriculture project. The first control is required for safeguarding the greenhouse from intruders especially monkeys. In tropical country animals are living in the garden, park and nearby houses. The control system safeguard the greenhouse by triggering siren and electric fence through motion sensor. The control also cut off the power of the Electric Fence Charger when there is no intruder detected. This will ensure the batteries is fully charged during day time. The second control is used to manage irrigations system for greenhouse. This unique control involves with feedback using weather condition. Three sensors namely temperature, humidity and pyranometer are used to provide signals that are known as multiplying factor for the control algorithm to perform autonomous adjustment for the next irrigation time. The algorithm involves with a constant K which is applied as time setting for daily irrigation. The time setting autonomously changed associated with the changes of weather such as dry climax, raining and hot weather. The control algorithm has been tested and the result shows the management of soil moisture through weather feedback element is economically improved and would be possible to increase yearly crop yield.