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Sensors 2015, 15(11), 28690-28716; doi:10.3390/s151128690

Using a Novel Wireless-Networked Decentralized Control Scheme under Unpredictable Environmental Conditions

Department of Biomechatronics Engineering, National Pingtung University of Science and Technology, Pingtung County, 91201, Taiwan
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Author to whom correspondence should be addressed.
Academic Editor: Mohamed F. Younis
Received: 22 September 2015 / Revised: 29 October 2015 / Accepted: 6 November 2015 / Published: 12 November 2015
(This article belongs to the Section Sensor Networks)
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Abstract

The direction of sunshine or the installation sites of environmental control facilities in the greenhouse result in different temperature and humidity levels in the various zones of the greenhouse, and thus, the production quality of crop is inconsistent. This study proposed a wireless-networked decentralized fuzzy control scheme to regulate the environmental parameters of various culture zones within a greenhouse. The proposed scheme can create different environmental conditions for cultivating different crops in various zones and achieve diversification or standardization of crop production. A star-type wireless sensor network is utilized to communicate with each sensing node, actuator node, and control node in various zones within the greenhouse. The fuzzy rule-based inference system is used to regulate the environmental parameters for temperature and humidity based on real-time data of plant growth response provided by a growth stage selector. The growth stage selector defines the control ranges of temperature and humidity of the various culture zones according to the leaf area of the plant, the number of leaves, and the cumulative amount of light. The experimental results show that the proposed scheme is stable and robust and provides basis for future greenhouse applications. View Full-Text
Keywords: fuzzy logic inference; graphic user interface; wireless sensor network; environment control fuzzy logic inference; graphic user interface; wireless sensor network; environment control
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

Chang, C.-L.; Huang, Y.-M.; Hong, G.-F. Using a Novel Wireless-Networked Decentralized Control Scheme under Unpredictable Environmental Conditions. Sensors 2015, 15, 28690-28716.

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