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| 折扣與優(yōu)惠：團購最低可5折優(yōu)惠 - 了解詳情 | 論文格式：Word格式(*.doc) |  |
摘要：地球上的水資源非常豐富，據(jù)估計水的總體積約為13.8億立方公里。 假設(shè)將這些水平均分布于地球表面，相當于地球整個表面覆蓋著一層平均深度為2650米的水。但是令人惋惜的是，所有水98％是咸水，主要分布在海洋中。淡水只占地球總水量的2％，大約有3000萬立方公里，然而，即使這2％的淡水也不能全被人類所應(yīng)用，人類面臨的水環(huán)境相當嚴峻，水資源關(guān)系到國脈民運，作為一個合格的公民我們必須有較強的節(jié)水意識，我國農(nóng)業(yè)灌溉用水約占全國用水總量的 80％以上，在灌溉水的有效利用率只有約40％，所以，推廣節(jié)水灌溉，勢在必行。本文設(shè)計了一個以單片機STC89C54為核心的溫室自動灌溉系統(tǒng)，實現(xiàn)了對作物根系的土壤溫濕度進行實時監(jiān)測與控制，SHT10土壤專用溫濕度傳感器采集土壤濕度。系統(tǒng)將周期采集的土壤溫濕度數(shù)據(jù)傳送到微處理器模塊，對數(shù)據(jù)進行分析后做出是否灌溉的指令，在灌溉過程中由數(shù)據(jù)采集模塊持續(xù)監(jiān)測土壤濕度，并根據(jù)監(jiān)測結(jié)果，反饋控制灌溉設(shè)備的啟停，以此實現(xiàn)土壤溫濕度維持在預(yù)設(shè)范圍。該系統(tǒng)采用人機交互模塊實現(xiàn)灌溉閾值的可配置，滿足不同作物參數(shù)定制需求。 關(guān)鍵詞：溫室自動灌溉；單片機；土壤溫濕度檢測
ABSTRACT：Water resource is very rich on earth，It is estimated that the total volume of water is about 1.38 billion cubic kilometers. If these water distributed to divide to the earth's surface，Equivalent to the entire surface of the earth would be covered with a layer of average depth of 2650 meters of water， Unfortunately，All of the 98 percent of water is salt water，mainly distributed in the ocean. And the fresh water only is 2%. There are about 30 million cubic kilometers. However Even if the 2% of all freshwater also cannot be used in human, faced with the water environment human beings is quite severe, the water resources related to countries get pulse, As a qualified citizens we must have strong water saving consciousness, our country agriculture irrigation water accounts for about 80% of the total water above, in the effective utilization rate of irrigation water only about 40%, so, spreading the water-saving irrigation, imperative. This paper designs an STC89C54 with the single chip processor as the core of the greenhouse automatic irrigation system, which realizes the soil temperature and humidity on the root crops real-time monitoring and control. This system to STC89C54 MCU as the core, SHT10 soil temperature and humidity sensors to collect special soil moisture. The system will cycle acquisition soil temperature and humidity data which transfers to a microprocessor module, and analyze the data of whether made after irrigation instructions on irrigation in the process the data acquisition module for monitoring soil moisture, and according to the monitoring results, feedback control irrigation equipment rev. Stop, to realize the soil temperature and humidity in the default maintain range. The system adopts the human-computer interaction modules realize irrigation the threshold value can be configured to meet different crops parameters to customize demand. Keywords: greenhouse automatic irrigation; Single chip microcomputer; Soil testing temperature and humidity
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