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基于PLC控制的室內(nèi)降雨入滲自動測定系統(tǒng)
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國家自然科學(xué)基金資助項(xiàng)目（51379098）和“十二五”國家科技支撐計(jì)劃資助項(xiàng)目（20121858562）


Indoor Automatic Measurement System for Rainfall Infiltration Based on PLC
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    摘要:

    在馬氏瓶供水進(jìn)行人工降雨入滲測定方法的基礎(chǔ)上，設(shè)計(jì)了一種以PLC為處理器、觸摸屏為人機(jī)界面的室內(nèi)降雨入滲自動測定系統(tǒng)，可實(shí)現(xiàn)馬氏瓶自動補(bǔ)水、降雨強(qiáng)度自動調(diào)節(jié)、試驗(yàn)數(shù)據(jù)實(shí)時(shí)顯示存儲及查詢。系統(tǒng)測控元件包括馬氏瓶及徑流瓶中的2個(gè)液位傳感器，馬氏瓶進(jìn)水口和通氣孔處的2個(gè)電磁閥，馬氏瓶與降雨器間的1個(gè)調(diào)節(jié)閥。PLC實(shí)時(shí)采集液位傳感器的輸出信號，通過模/數(shù)轉(zhuǎn)換獲取記錄馬氏瓶與徑流瓶中的液位值；并根據(jù)馬氏瓶液位控制電磁閥的開閉實(shí)現(xiàn)馬氏瓶自動補(bǔ)水；通過改變調(diào)節(jié)閥輸入電流強(qiáng)度實(shí)現(xiàn)降雨強(qiáng)度的自動調(diào)節(jié)。試驗(yàn)表明，系統(tǒng)操作簡單、運(yùn)行穩(wěn)定，測定結(jié)果可以合理反映土壤降雨入滲過程，適用于與土壤有關(guān)領(lǐng)域的降雨入滲測定。

    Abstract:

    Based on the measuring method of manual rainfall infiltration with the Mariotte bottle, an indoor automatic measurement system for rainfall infiltration with PLC(programmable logical controller)and touch panel was designed. This system could automatically water to the Mariotte bottle, adjust rainfall intensity, display and record experiment data in real time, and also provide the function of data query. The PLC collects the analog signal and transforms it into a digital signal, which is used to control the water input of the Mariotte bottle to regulate water level through switching the two electromagnetic valves. In addition, the PLC controls regulating valve opening to adjust the rainfall intensity. Furthermore, this system can be operated easily, rationally reflect the infiltration process, and give a high precision measurement.

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呂華芳,楊漢波,叢振濤,雷慧閩.基于PLC控制的室內(nèi)降雨入滲自動測定系統(tǒng)[J].農(nóng)業(yè)機(jī)械學(xué)報(bào),2014,45(9):144-149. Lü Huafang, Yang Hanbo, Cong Zhentao, Lei Huimin. Indoor Automatic Measurement System for Rainfall Infiltration Based on PLC[J]. Transactions of the Chinese Society for Agricultural Machinery,2014,45(9):144-149.

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  • 收稿日期:2014-04-27
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  • 在線發(fā)布日期: 2014-09-10
  • 出版日期: 2014-09-10