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无线传感器网络在温室农业监测中的应用 总被引:6,自引:3,他引:3
针对传统温室农业数据采集系统存在的问题, 提出了一种使用无线传感器网络技术组建农业温室监控系统的设计方案,实现了作物生长环境的无线监控,解决了传统温室农业布线的繁琐性和局限性,为提高温室环境信息管理自动化程度和设施农业种植决策提供依据, 顺应传感器的无线化与网络化的趋势. 相似文献
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基于物联网的智能温室远程监控系统设计 总被引:1,自引:0,他引:1
《中国农机化学报》2016,(6)
根据智能温室环境控制需要处理多种类型数据信息的要求,提出一种zigbee无线传感网络、WIFI无线通讯及工业以太网相混合的物联网系统方案。文章重点讨论方案中以Android为操作系统的移动终端的远程监控策略及具体实现方法。该方案经过实际验证能很好的满足智能温室的控制要求。 相似文献
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基于农业物联网的智能温室系统架构与实现 总被引:2,自引:0,他引:2
农业物联网能实现农业管理的数字化、网络化和精准化,基于农业物联网的温室监控系统可实现温室环境的远程监测和智能控制。通过分析温室监控的特殊需求并参考物联网的标准架构,提出了智能温室物联网的架构方案。根据该架构方案设计了完整的温室监控物联网:感知控制层基于Zig Bee和RS485传感器网络及计算机控制模块,并针对可靠性、可扩展性和低功耗进行了优化设计;网络传输层支持多种数据传输方式和数据同步机制,建立了系统层间数据枢纽;应用层包含数据中心、WEB服务器和智能控制策略系统,提供了基于Hadoop和My SQL的海量温室历史数据的云存储解决方案、高可用免维护的云服务器和基于大数据和机器学习的控制策略;终端接入层采用WEB前端技术和React Native为系统提供了可视化界面。该智能温室物联网系统在连栋塑料温室实验基地的长期工作表明:系统运行稳定可靠,能有效提高温室生产的科学管理水平。 相似文献
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基于物联网的连栋蔬菜温棚环境监测系统设计 总被引:2,自引:1,他引:1
针对传统连栋温棚监测系统存在的成本较高、控制粗略、布线复杂等问题,设计了一种精准农业信息感知系统。系统基于物联网的精确感知、高效传输以及智能监控的特点,由无线感知网络、传输节点、GPRS无线传输网络和上位机管理等多个部分组成。温棚中的监测节点以C8051F410单片机为控制核心,通过无线传感网络进行通信,上位机以WEB服务器为平台,结合MS SQL Server数据库对数据管理。系统能够实时感知作物生长环境信息,并将参数传输到上位机管理系统,经专家系统判别后进行相应反馈调控。实验证明,系统可以对温室内的多种环境参数进行有效的监测,满足实际农业生产要求。 相似文献
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介绍了基于LoRa无线传感网络搭建温室测控平台的硬件设计和软件开发。该平台充分利用LoRa无线传感网络的广覆盖、大连接和低功耗的特点,适应各类温室的全部自动化设备联网需求;利用STM32F101R微处理器的低功耗高性能特点,提升测控模组可靠性;运用成熟的透传云技术,建立远程的统一管理平台。经实际测试,该平台具有标准化程度高、可靠性强、适用性广的优点,非常适合温室环境监测和各类农机控制,在农业物联网领域具有广阔的市场前景。 相似文献
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针对传统温室大棚灌溉智能化和自动化水平低的问题,采用无线传感器网络WSN技术设计了智能温室大棚自动定点喷灌系统。系统主要由监控中心上位机、多个温湿度监测和电磁阀控制节点、密封储水罐压力监测节点、充压机和水泵控制节点组成。通过温湿度传感器获取土壤表层的温度和湿度数据,并经过ZigBee网络将该节点ID和数据打包实时发送至监控中心上位机,一旦监测到的湿度低于设置的阈值时,会控制对应该区域的电磁阀开启进行喷灌,同时控制充压机保持储水罐内的压力为恒定值。试验表明,该系统能准确获取土壤表面的温湿度数据,实现了整个温室大棚的定点喷灌和密闭储水罐的自动补水功能。 相似文献
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Overland water and salt flows in a set of rice paddies 总被引:1,自引:0,他引:1
E. Playn O. Prez-Coveta A. Martínez-Cob J. Herrero P. García-Navarro B. Latorre P. Brufau J. Garcs 《Agricultural Water Management》2008,95(6):645-658
Cultivation of paddy rice in semiarid areas of the world faces problems related to water scarcity. This paper aims at characterizing water use in a set of paddies located in the central Ebro basin of Spain using experimentation and computer simulation. A commercial field with six interconnected paddies, with a total area of 5.31 ha, was instrumented to measure discharge and water quality at the inflow and at the runoff outlet. The soil was classified as a Typic Calcixerept, and was characterized by a mild salinity (2.5 dS m−1) and an infiltration rate of 5.8 mm day−1. The evolution of flow depth at all paddies was recorded. Data from the 2002 rice-growing season was elaborated using a mass balance approach to estimate the infiltration rate and the evolution of discharge between paddies. Seasonal crop evapotranspiration, estimated with the surface renewal method, was 731 mm (5.1 mm day−1), very similar to that of other summer cereals grown in the area, like corn. The irrigation input was 1874 mm, deep percolation was 830 mm and surface runoff was 372 mm. Irrigation efficiency was estimated as 41%. The quality of surface runoff water was slightly degraded due to evapoconcentration and to the contact with the soil. During the period 2001–2003, the electrical conductivity of surface runoff water was 54% higher than that of irrigation water. However, the runoff water was suitable for irrigation. A mechanistic mass balance model of inter-paddy water flow permitted to conclude that improvements in irrigation efficiency cannot be easily obtained in the experimental conditions. Since deep percolation losses more than double surface runoff losses, a reduction in irrigation discharge would not have much room for efficiency improvement. Simulations also showed that rice irrigation performance was not negatively affected by the fluctuating inflow hydrograph. These hydrographs are typical of turnouts located at the tail end of tertiary irrigation ditches. In fact, these are the sites where rice has been historically cultivated in the study area, since local soils are often saline-sodic and can only grow paddy rice taking advantage of the low salinity of the irrigation water. The low infiltration rate characteristic of these saline-sodic soils (an experimental value of 3.2 mm day−1 was obtained) combined with a reduced irrigation discharge resulted in a simulated irrigation efficiency of 60%. Paddy rice irrigation efficiency can attain reasonable values in the local saline-sodic soils, where the infiltration rate is clearly smaller than the average daily rice evapotranspiration. 相似文献
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车用发动机润滑油失效规律与更换周期研究 总被引:7,自引:0,他引:7
研究在正常使用条件下10W/30-QC级润滑油用于某型车用发动机时所表现的失效规律,确认期服从两参数Weibull分布,并给出分布的尺度参数η和形状参数m之最佳线性无偏估计(BLUE)同时,还为定量分析,计算车用发动机润滑油的使用可靠性和合理确定其更换周期提供了一套可供借鉴的方法,并给出了具体的计算实例。 相似文献
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赵国杰 《农业机械化与电气化》2011,(4):106-107
乡(镇)农技推广体系是农业发展的关键。介绍朝阳市农业技术推广体系的现状,针对目前体制及运行机制、服务手段等方面存在的问题,提出适合朝阳市乡(镇)农技推广体系改革与发展的对策,以期对全省农技推广体系改革和发展起到一些借鉴作用。 相似文献
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苑庆刚 《农业机械化与电气化》2010,(3):52-54
草莓果味酸甜爽口,营养价值高,为人们所喜爱的应市鲜果之一。由于草莓易受损伤和微生物侵染,因此其采收、贮藏过程极为重要。介绍草莓采收过程中的注意事项以及11种贮藏保鲜技术的实施步骤和操作方法,推介9种加工方式,为草莓产业化提供技术支持。 相似文献
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对引进的谷子新品种金谷子耐旱TG118进行品种比较试验和多点试种。结果表明:该品种抗旱、耐瘠、适应性强,稳产、高产、抗病抗风抗倒伏强,品质优良,粮草兼用,种植简单,省工易管;一般产量在6000kg/hm2以上,比当地主栽品种增产20%以上。最高产量达9450kg/hm2,适于在辽西北地区推广应用。 相似文献
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对《种子法》存在问题的探讨 总被引:1,自引:0,他引:1
李鹏 《农业机械化与电气化》2011,(6):129-130
《种子法》是我国种植业第一部法律。自实施以来,为依法加强种子管理提供了有力的法律支撑,促进我国种子产业发生翻天覆地的变化。但随着依法管理工作的深入和种子产业的快速发展,《种子法》及配套规章的一些问题逐步显现出来。对《种子法》及配套规章存在的问题进行深入分析,对需要进一步补充的章节以及需要调整的内容进行深入探讨,以求更加完善和明确。 相似文献
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瓦房店市是我国重要的水果生产基地,在国内水果生产领域占有重要地位。随着水果市场化的不断深入,如何满足和适应国内外市场需求成为瓦房店市水果生产的关键问题。从瓦房店市水果生产实际出发,阐述了实施水果生产标准化的必要性,提出了发展水果生产标准化的具体措施。 相似文献
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在新世纪,面对机遇和挑战,党的十六大把“社会更加和谐”作为全面建设更高水平的小康社会的一个重要目标。中国人素有社会和谐的理想;西方人自古也向往社会和谐;借鉴东西方两种和谐社会思想的经验、教训,构建社会主义和谐社会理论。 相似文献
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About 30 years have passed since the Government of Egypt embarked on implementing a series of large scale drainage projects. At present, about 3.8 million acres have been provided with drainage systems on the basis of systematic pre-drainage investigations and designs. The target is to provide drains in approximately 6.4 million acres in the Nile Valley and Delta.The implementation of the subsurface drainage system is carried out by the public sector and private contractors under direct supervision of governmental regional departments. The implementation process depends on many factors related to the drainage material, machinery, manpower, site requirements, farmers and organizations involved. Problems and constraints are sometimes challenging, however, the annual rate of implementation has gradually increased to 170,000 acre/year.This paper discusses the different aspects involved in the implementation process of drainage systems. The development in materials, machinery and construction technologies will be reviewed. Institutional and management factors are going to be also considered. 相似文献