發(fā)布時間：2018-04-18 20:33

  本文選題：日光溫室 + ZigBee��； 參考：《東北農(nóng)業(yè)大學(xué)》2015年碩士論文

【摘要】：日光溫室是我國北方地區(qū)特有的溫室類型,與傳統(tǒng)溫室類型相比,日光溫室能夠利用太陽光來給農(nóng)作物加熱并且提供光照,所以日光溫室在我國北方地區(qū)被廣泛應(yīng)用。隨著日光溫室的普及以及精細農(nóng)業(yè)的發(fā)展,人們開始監(jiān)控日光溫室內(nèi)的環(huán)境,然而在監(jiān)控過程中存在較多弊端。傳統(tǒng)的人工測量的方法給工作人員帶來了許多不便,這樣不僅加重了工作人員的工作負擔(dān),而且還不能及時的反映日光溫室內(nèi)的環(huán)境情況。如果使用傳統(tǒng)的測量儀器,不能準(zhǔn)確的測量各個參數(shù)的數(shù)值。針對日光溫室在監(jiān)控方面所面臨的各種問題,建立一套操作簡單,精度較高,功能全面,安全性強的日光溫室監(jiān)控系統(tǒng)具有現(xiàn)實意義。本文所設(shè)計的日光溫室監(jiān)控系統(tǒng),結(jié)合了Zigbee無線傳感網(wǎng)絡(luò)技術(shù)、單片機控制技術(shù)以及嵌入式組態(tài)環(huán)境開發(fā)技術(shù),利用傳感器采集溫室環(huán)境數(shù)據(jù),控制器通過Zigbee無線傳輸網(wǎng)絡(luò)得到控制參數(shù),進而控制排風(fēng)扇、換氣扇、水鍋爐、電動遮陽簾、人工光源、二氧化碳發(fā)生器、微噴頭等硬件設(shè)備的啟停,從而使溫度、濕度、二氧化碳濃度、光照強度等環(huán)境參數(shù)實時地滿足作物的生產(chǎn)需求。本日光溫室監(jiān)控系統(tǒng)進行了上位機、下位機的軟硬件設(shè)計。硬件設(shè)計包括感知模塊、無線處理模塊、繼電器、控制屏的選型,供電系統(tǒng)電源與抗干擾的設(shè)計,搭建了溫室監(jiān)控系統(tǒng)的硬件平臺。下位機軟件部分主要包括對嵌入式開發(fā)系統(tǒng)的設(shè)計以及模糊PID算法的實現(xiàn),以TinyOS為平臺,利用nesC語言完成了網(wǎng)關(guān)、節(jié)點、CSMA/CA算法及偵聽策略等控制程序的設(shè)計;在MATLAB環(huán)境下對模糊PID算法進行仿真。本系統(tǒng)的上位機分為兩個部分:遠程監(jiān)控計算機和日光溫室現(xiàn)場監(jiān)控屏,分別利用MCGS通用版與嵌入版進行開發(fā),完成了工作界面、系統(tǒng)設(shè)置、工作日志用戶界面的設(shè)計。通過對日光溫室監(jiān)控系統(tǒng)的多次測試,實驗表明:本系統(tǒng)可以及時準(zhǔn)確地監(jiān)測日光溫室內(nèi)各個環(huán)境參數(shù)的變化情況,測試結(jié)果穩(wěn)定,誤差均在合理誤差范圍內(nèi);各種控制設(shè)備也能夠正常工作,并且實現(xiàn)了手動和自動的雙重控制;上位機系統(tǒng)工作穩(wěn)定,可供用戶觀看現(xiàn)場情況、控制硬件設(shè)備、調(diào)節(jié)系統(tǒng)參數(shù)和觀看歷史數(shù)據(jù);無線傳感器網(wǎng)絡(luò)信號穩(wěn)定,在350m以內(nèi)都能正常工作。本系統(tǒng)能夠確保農(nóng)作物在日光溫室內(nèi)處于合理的環(huán)境下,不受外界影響,成長結(jié)果令人滿意,工作安全穩(wěn)定,具有現(xiàn)實意義。
[Abstract]:Solar greenhouse is a unique greenhouse type in northern China. Compared with the traditional greenhouse type, solar greenhouse can use solar light to heat crops and provide light, so solar greenhouse is widely used in northern China.With the popularization of solar greenhouse and the development of fine agriculture, people begin to monitor the environment in solar greenhouse. However, there are many disadvantages in the monitoring process.The traditional manual measurement method brings a lot of inconvenience to the staff, which not only increases the work burden of the staff, but also can not reflect the environmental situation in the solar greenhouse in time.If traditional measuring instruments are used, the values of each parameter can not be measured accurately.Aiming at the various problems in monitoring and control of solar greenhouse, it is of practical significance to set up a monitoring system of solar greenhouse with simple operation, high precision, comprehensive function and strong security.The solar greenhouse monitoring system designed in this paper combines Zigbee wireless sensor network technology, single-chip microcomputer control technology and embedded configuration environment development technology, using sensors to collect greenhouse environment data.The controller obtains the control parameters through the Zigbee wireless transmission network, and then controls the starting and stopping of the hardware equipment, such as exhaust fan, ventilator, water boiler, electric shade curtain, artificial light source, carbon dioxide generator, micro sprinkler head and so on, thus making the temperature, humidity, etc.The environmental parameters, such as carbon dioxide concentration and light intensity, can meet the demand of crop production in real time.This solar greenhouse monitoring system carries on the upper computer, the lower computer hardware and software design.Hardware design includes sensing module, wireless processing module, relay, control screen selection, power supply system and anti-interference design. The hardware platform of greenhouse monitoring system is built.The software of lower computer mainly includes the design of embedded development system and the realization of fuzzy PID algorithm. Based on TinyOS and nesC language, the control programs such as gateway, node CSMA / CA algorithm and listening strategy are designed.The fuzzy PID algorithm is simulated in MATLAB environment.The host computer of this system is divided into two parts: remote monitor computer and spot monitor screen of sunlight greenhouse. The design of working interface, system setting and working log user interface is completed by using MCGS general edition and embedded version respectively.Through many tests on the monitoring system of solar greenhouse, the experiment shows that the system can monitor the change of the environmental parameters in the greenhouse in time and accurately, the test results are stable and the errors are within the reasonable error range;All kinds of control equipment can also work normally and realize manual and automatic dual control. The upper computer system works stably for users to watch the scene, control hardware equipment, adjust system parameters and view historical data.Wireless sensor network signals are stable and can work normally within 350 m.The system can ensure the crops in a reasonable environment in solar greenhouse, free from external influence, the growth results are satisfactory, work safety and stability, has practical significance.
【學(xué)位授予單位】：東北農(nóng)業(yè)大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2015
【分類號】：S625.3;TP277;TN92

【參考文獻】

相關(guān)碩士學(xué)位論文 前1條

1 劉彥辰;陜西關(guān)中地區(qū)不同結(jié)構(gòu)日光溫室光溫環(huán)境分析[D];西南大學(xué);2012年

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本文編號：1769973