工厂化蔬菜气雾栽培营养液供给自动监控关键技术及系统

发布时间：2018-04-15 09:21

本文选题：气雾化栽培 + 自动监控　；参考：《中国计量学院》2015年硕士论文

【摘要】：随着社会的发展,世界人口逐渐增加,耕地面积日益减少,而且人们对优质、安全、无污染的蔬菜需求也越来越高,植物工厂成为蔬菜栽培技术未来发展的必然趋势,气雾培技术的应用很好的解决了普通水培中水气矛盾的问题,并可为作物根系生长提供良好的根际环境,具有节肥、节水的特点,为高产优质蔬菜的工厂化生产提供保障。研究基于植物工厂的气雾化栽培技术,并应用于蔬菜工厂化生产是现在极为迫切的研究问题。工厂化气雾化栽培营养液供给自动监控关键技术和系统集成是植物工厂建设的核心技术。随着近几年的深入发展,各种相关技术得到了突破,但智能化低、成本高,一些关键技术比如营养液调节及供给控制技术不够成熟仍制约着我国植物工厂的发展。本文提出及研发了基于工厂化蔬菜气雾化栽培营养液供给自动监控关键技术及系统,本系统主要通过现场控制系统采集温湿度、光照度、水管压力、根际温湿度、营养液的EC值和p H值,经营养液混肥智能调控、雾培喷雾营养液供给的模糊神经网络控制算法处理,实现营养液自动调节和供给,并通过现场控制和远程控制的结合,实现蔬菜气雾化栽培高效智能化管理。针对营养液混肥智能调控,提出了T-S模糊控制算法,采用实时检测营养液中的EC值和p H值,经模糊控制器控制输出,控制加液电磁阀的通断来实现Na Cl溶液、母液和酸碱液的加入,从而控制营养液浓度和p H值在设定范围。目前国内雾培喷雾控制及控制参数的设定基本都是根据人工经验来获得,本系统通过栽培工程对比实验得出的雾培优化控制中心参数,结合采集到的根际温湿度和光照强度数据多传感融合,建立T-S模糊神经网络预测模型,实现对雾培喷雾营养液供给的自动控制,并进行实际测试,试验结果表明控制效果良好。本系统已在浙大农业科技园雾培大棚中运行,能满足实际的需求,为其他蔬菜的气雾化栽培提供了一种新思路。
[Abstract]:With the development of society, the population of the world is increasing gradually, the cultivated land area is decreasing day by day, and the demand for high-quality, safe and pollution-free vegetables is also higher and higher. The plant factory becomes the inevitable trend of the future development of vegetable cultivation technology.The application of aerosol culture technology has solved the problem of water and gas contradiction in common water culture, and can provide a good rhizosphere environment for the growth of crop root system. It has the characteristics of saving fertilizer and saving water, and provides the guarantee for the industrial production of high yield and high quality vegetables.It is very urgent to study the gas atomization cultivation technology based on plant factory and its application in vegetable factory production.The key technology and system integration of automatic monitoring of nutrient solution supply in plant plant are the key technologies of plant plant construction.With the further development of recent years, a variety of related technologies have been breakthrough, but intelligent low, high cost, some key technologies such as nutrient solution regulation and supply control technology is not mature still restricts the development of plant factories in China.This paper puts forward and develops the key technology and system of automatic monitoring and control of nutrient solution supply based on industrial vegetable atomization cultivation. The system mainly collects temperature and humidity, light intensity, water pipe pressure, rhizosphere temperature and humidity through field control system.The EC value and pH value of nutrient solution are controlled by the intelligent control of nutrient liquid mixed fertilizer, and the fuzzy neural network control algorithm is used to control the supply of nutrient solution in fog culture spray. The automatic regulation and supply of nutrient solution are realized, and the combination of field control and remote control is adopted.To realize the efficient and intelligent management of gas atomization cultivation of vegetables.A T-S fuzzy control algorithm is proposed for intelligent control of nutrient mixed fertilizer. Real time detection of EC value and pH value in nutrient solution is adopted. The output is controlled by fuzzy controller and the opening and breaking of solenoid valve is controlled to realize NaCl solution.The addition of mother liquor and acid-base solution to control the concentration of nutrient solution and pH value in the set range.At present, the parameters of fog spray control and control in China are basically obtained by artificial experience. The parameters of the control center of fog culture are obtained by comparison experiment of cultivation engineering in this system.Based on the multi-sensor fusion of temperature, humidity and illumination intensity data, a prediction model of T-S fuzzy neural network is established to realize the automatic control of spray nutrient solution supply in fog culture. The experimental results show that the control effect is good.The system has been running in the fog shed of Zhejiang University Agricultural Science and Technology Park, which can meet the actual needs and provide a new idea for the other vegetables' air-atomization cultivation.
【学位授予单位】：中国计量学院
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：S63;S126

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