Designing an Automated Control of a Portable Hydrophonic Plantation Facility based on Fuzzy Logic Algorithm.

[ABSTRACT]The paper discusses the design of an apparatus for hydrophonic plants to grow effectively in a limited growth area, using a plastic square tank with a size of 60 cm by 80 cm, which is filled using a pump with water and the growth media, so that it can be easily move from one place to another, and moreover can be stacked on top of another. The required acidity and nutrient, as well as the intensity of sunlight, are controlled using a microcomputer, based on the pre-set values to the standard requirements for specific vegetables. These values are set preliminary in to the microcomputer and use as references for the control algorithms. To release the system from the non-linearity conditions, the fuzzy logic control algorithm is applied to each of the control loop such that the growth environtment required for the vegetables can be achieved. A stirrer is used to speed-up the mixing time to reach homogeneous condition. The Takagi-Sugeno type Fuzzy Logic Controller was used, with only three membership functions at the input and the inference results are then weighted averaged at the output. The results shows that the apparatus works well under closed loop control, although there is still a small problem due to slow response and the insentitivity nature of the pH sensor that should be clean very often for better results.

https://opac.ll.chiba-u.jp/da/curator/107816/

https://opac.ll.chiba-u.jp/da/curator/107816/ceresIntlSympo-24-P037.pdf

Chiba University. Center for Environmental Remote Sensing

千葉大学環境リモートセンシング研究センター

会議発表用資料

Proceedings of the CEReS international symposium = CEReS国際シンポジウム資料集

24

37

42

2016-11-21

publisher

環境リモートセンシング研究センター「CEReSシンポジウム資料集」