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Based on Embedded System controlled greenhouse environment parameters

Author: XiaZhiCheng
Tutor: WangXiangDong
School: Shenyang University of Technology
Course: Control Theory and Control Engineering
Keywords: Greenhouse control Fuzzy PID Control Embedded Systems Agricultural facilities Wireless sensor
CLC: TP273.5
Type: Master's thesis
Year: 2012
Downloads: 166
Quote: 1
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Abstract


Greenhouse is today the world's agricultural facilities, an important part of the modern world's agricultural development priorities. It can be in a rapidly changing crop growth under natural conditions artificially created a suitable environment . Global greenhouse farming practices that enhance the greenhouse intelligent control and management level can take advantage of the efficiency of agricultural facilities . In China, in the greenhouse intelligent control applications with the world's developed countries , there is still a large gap. At present, the main application facility greenhouse control system environment variables are mostly imported products, which is very high technological content , monitoring the effect is very good, but the relative price is very high, usually only to be used in the domestic rare large or high-grade span greenhouse . Few domestic devices regardless of technology level or monitoring results are less than ideal, especially the lack of a common medium can be applied to a low-cost greenhouse intelligent control devices . This combined with today 's most popular embedded technology and wireless sensor network technology , and according to the common domestic small and medium sized greenhouse environmental control requirements, design and implement a set of agricultural greenhouse facilities intelligent embedded control systems. The main research work is as follows : ( 1 ) is designed based on wireless sensor networks and embedded system data acquisition and parameter greenhouse control system . ( 2 ) to build embedded systems hardware platform. Based on embedded development platform, the development of the system drive and control procedures , and use cross- platform QT ??language interface of the control system . ( 3 ) design of fuzzy PID control algorithm to achieve greenhouse intelligent control , according to the growth of greenhouse crops require relatively accurately adjust the parameters of the greenhouse . ( 4 ) the use of MATLAB / simulink simulation software for embedded control systems were simulated run , the test results reflect the controller dynamic response curve is better, small overshoot , steady-state , high precision, can achieve satisfactory control of greenhouse requirements. Papers Finally, the embedded control system is easy to operate , low cost , ease of hardware and software upgrades , user friendly features are summarized, and points out the need for further improvement of the control system is the perfect place .

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CLC: > Industrial Technology > Automation technology,computer technology > Automation technology and equipment > Automation systems > Automatic control,automatic control system > Computer control, computer control system
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