本文選題：在線檢測　切入點：同步傳輸　出處：《西北農林科技大學》2014年碩士論文　論文類型：學位論文

【摘要】：在植物工廠中生長的作物，其根系大多數生長在營養(yǎng)液中，由于吸收了營養(yǎng)液中的氧氣、養(yǎng)分和水分，使營養(yǎng)液的pH、溶解氧含量、濃度等參數持續(xù)改變。另外，各種微生物、少量衰老脫落的殘根以及根系分泌的有機物等都會影響營養(yǎng)液的參數。因此，必須對植物工廠營養(yǎng)液各參數進行實時的檢測，然后予以控制，使其處于符合作物生長發(fā)育需要的狀態(tài)。 植物工廠的核心技術包括營養(yǎng)液的在線檢測和環(huán)境的綜合控制兩方面技術。其中，為實現(xiàn)植物工廠連年正常生產的目的，營養(yǎng)液在線檢測是必不可少的。植物工廠營養(yǎng)液在線檢測技術即利用多種傳感器和計算機對作物生長發(fā)育所需的含鹽量、電導率、溫度、pH值等根際環(huán)境因子進行在線檢測，從而實現(xiàn)對植物工廠營養(yǎng)液的全程監(jiān)控。 關于植物工廠營養(yǎng)液多參數在線檢測與同步傳輸終端的研究，即運用現(xiàn)有的科學技術條件，實時、準確地檢測植物工廠營養(yǎng)液中根際環(huán)境因子的參數，參考作物生長不同時期所需營養(yǎng)液各參數值，為營養(yǎng)液的調控提供支持。植物工廠營養(yǎng)液檢測系統(tǒng)是植物工廠的重要組成部分，是實現(xiàn)植物工廠智能綜合自動化的基礎，研究低成本、高精度的植物工廠營養(yǎng)液多參數在線檢測系統(tǒng)具有重要的意義。 本研究采用“分散檢測、集中處理、協(xié)調控制”的模式，通過模塊化的設計方法把整個系統(tǒng)劃分為傳感器模塊、信號調理模塊、微處理器模塊和通信模塊四大部分，分步實現(xiàn)。將數據采集技術、AVR單片機技術、無線通信技術等應用于植物工廠營養(yǎng)液多參數在線檢測與同步傳輸系統(tǒng)上，采用理論分析和實驗相結合的方法進行系統(tǒng)的軟硬件設計和調試驗證，開發(fā)為植物工廠服務的營養(yǎng)液多參數在線檢測與同步傳輸終端。 最終開發(fā)一個以數據采集技術、AVR單片機技術和無線通信技術為基礎的植物工廠營養(yǎng)液多參數在線檢測與同步傳輸終端，，能實時采集營養(yǎng)液的溫度、酸堿度pH值、電導率EC以及溶解氧濃度DO，并通過無線通信完成實時數據的傳輸、存儲等工作，使其具有實時檢測、同步傳輸、穩(wěn)定可靠的特點。
[Abstract]:Most of the roots of crops grown in plant factories are grown in nutrient solutions. By absorbing oxygen, nutrients and water from the nutrient solution, the pH, dissolved oxygen content, concentration and other parameters of the nutrient solution continue to change. In addition, a variety of microorganisms, A small amount of senescence and shedding residual roots and organic matter secreted by roots all affect the parameters of nutrient solution. Therefore, the parameters of nutrient solution in plant factory must be detected in real time and then controlled. Put it in a state that meets the needs of crop growth and development. The core technology of plant factory includes two aspects: on-line detection of nutrient solution and integrated control of environment. On-line detection of nutrient solution is essential. Plant plant nutrient solution on-line detection technology uses a variety of sensors and computers to detect the environmental factors of the rhizosphere such as salt content, electrical conductivity, temperature and pH value for crop growth and development on line. Thus, the whole process monitoring of nutrient solution in plant factory can be realized. The research on the on-line detection and synchronous transmission terminal of nutrient liquid in plant factory, that is, using the existing scientific and technological conditions, to detect the parameters of the rhizosphere environmental factor in the nutrient liquid of plant factory in real time and accurately. In order to provide support for the regulation and control of nutrient solution, the nutrient liquid detection system of plant factory is an important part of plant factory and the basis of realizing intelligent automation of plant factory, referring to the parameters of nutrient solution needed in different periods of crop growth. It is of great significance to study the low-cost and high-precision plant nutrient liquid multi-parameter online detection system. In this study, the system is divided into four parts: sensor module, signal conditioning module, microprocessor module and communication module. Data acquisition technology AVR single chip computer technology, wireless communication technology and so on are applied to the plant plant nutrition liquid multi-parameter on-line detection and synchronous transmission system. The software and hardware of the system are designed and debugged by combining theoretical analysis and experiment, and the multi-parameter on-line detection and synchronous transmission terminal of nutrient solution serving for plant factory is developed. Finally, a plant plant nutrient liquid on-line detection and synchronous transmission terminal based on AVR single chip computer technology and wireless communication technology is developed, which can collect the temperature and pH value of nutrient liquid in real time. Electrical conductivity EC and do of dissolved oxygen concentration can be used to transmit and store real time data through wireless communication so that it has the characteristics of real time detection synchronous transmission and stability and reliability.
【學位授予單位】：西北農林科技大學
【學位級別】：碩士
【學位授予年份】：2014
【分類號】：S316;TN92

【共引文獻】

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1 Chau Minh Thuyen（周明詮）;[D];湖南大學;2012年

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本文編號：1627018