基于Zigbee技术的葡萄生长监控系统设计     

吕九一  陈楠 《科技广场》2014,(10)

本次设计采用无线传感器网络,利用Zigbee技术,设计葡萄生长环境监控节点。该节点具有较强的通信处理能力,能够对传感器采集的数据进行运算和传输至上位机,进而通过对水阀开启时间的控制来实现对土壤含水率的精确控制,以达到对葡萄生长过程进行精确控制的目的。  相似文献   

GPS变形监测中数据处理的研究     

李海文  周海峰 《科技广场》2014,(1):77-80

本文利用GPS技术对南宁市天雹水库进行变形观测,并利用TEQC软件对GPS观测数据进行了初步处理,证实了GPS变形监测数据有着良好的质量和可靠性,然后利用徕卡后处理软件LGO对整个监测网数据进行了基线解算和网平差,最后对比了非完全多项式模型和三维坐标转换的结果,得出多项拟合法的计算过程更为简单,结果满足变形监测的要求。  相似文献   

基于PSO与LSSVR的坝体顺流向位移预测     

刘延婷 《人天科学研究》2014,(4):49-50

顺流向位移是坝体形变监测中的重要指标。针对神经网络、支持向量机模型存在的局限性,提出基于粒子群优化与最小二乘支持向量回归的模型对顺流向位移进行预测。结合实地坝体数据,通过与神经网络、传统支持向量机等模型进行对比实验和分析,结果表明,该方法具有误差低、计算效率高等特点。  相似文献   

基于ZigBee的住宅小区监控系统     

李庆  张娅 《人天科学研究》2011,10(7):81-82

利用ZigBee技术设计了一个小区无线监控系统。系统对终端节点采用模块化设计,用户可以针对终端节点的具体部署位置,选择不同的传感器模块,降低了系统的部署成本。结合ZigBee网络自动组网的优点,系统可以做到快速部署,并且有良好的扩展性。  相似文献   

云计算系统网络管理的探讨     

王晓敏  刘宏伟  李石妍 《黑龙江科技信息》2011,(32):109-110,236

针对云计算这样一个范畴,综述了云计算的公共管理的范畴来支持这种公共活动。剖析还没有对云计算完整结构系统的管理方案。现在的学者们将主要焦点放在底层构建的云计算平台基础设施资源管理上,但是参照于经典的网络管理各个功能,很多功能描述还不完善甚至是空白。本论文将着眼于云计算中的用户、资源、计费基本方面,提出适用于云计算平台的网络管理机制,并针对各个功能,给出了解决方案。  相似文献   

Non-destructive monitoring methods as indicators of damage cause on Cathedral of St. Lawrence in Trogir,Croatia     

《Journal of Cultural Heritage》2014,15(4):424-431

Durability is one of the most important engineering properties of cultural heritage monuments. For the purpose of the preservation of structures for future generations, the causes of damage should be determined for the proper choice of type and location of strengthening. The condition of the foundation is difficult to determine without an extensive investigation which is critical because most often the cause of damage is found in such foundations. Geotechnical investigation techniques require the damage and destruction of a building's surroundings or the damage of a foundation with a boring device. Non-destructive methods, such as geophysical methods, are less reliable and the results of such investigations must be combined with the results of subsurface exploration. This paper is a presentation of results achieved through the monitoring of the activity of a number of joints on the Cathedral of St. Lawrence in Trogir, Croatia, which is a cultural heritage monument protected by UNESCO. Excavations for the purpose of flagging replacement in the zone around the east frontage were made in 1979. A probe beneath the main apse uncovered a water cistern where the connection between the mid and north apses is located, and instead of a staggered foundation, a wall with a depth of more than 2.2 m beneath the flagging was discovered. With respect to the given that churches were built on existing ones, it is possible to assume that this is a wall of the late-antiquity church described by Constantin Porfirogenet in the 10th century, built on and later adapted to the foundation for the new structure. The displacement in time of the construction elements of the cathedral were measured and recorded using non-destructive methods. Fissure displacement behaviour, air temperature and air humidity were monitored. The monitoring of the air humidity did not lead to any useful conclusion, so it was quickly dismissed. Observations of data were performed during two periods with an interruption between the two caused by insufficient monetary resources. Data from almost 8 years of continuous measuring are available. The aim of this paper is to present the data of the measured fissure displacements which were correlated with air temperature changes and mathematical models which were based on statistical analysis. Correlation coefficients show that the analysed fissures react to the air temperature changes with different intensities. The obtained data lead to the conclusion that the causes of the structural damage are not found within a displacement or failure of the foundations. Instead, the causes of the damage were found in other parts of the structure.  相似文献   

Earthquakes and ancient leaning towers: Geodetic monitoring of the bell tower of San Benedetto Church in Ferrara (Italy)     

《Journal of Cultural Heritage》2014,15(6):687-691

In May–June 2012, several seismic events took place in the Po River Plane in northern Italy, with a maximum magnitude of M_W 5.86 (M_L 5.9)] and the epicentre located about 32 km from the centre of Ferrara. Many historical buildings were seriously damaged and others showed marked deformations or differential settlements. Therefore, it was necessary to place many of them under monitoring, using fast and safe measurement techniques to quickly obtain accurate information on ongoing structural deformation. This paper presents the case study of the bell tower of San Benedetto Church in Ferrara (17th century), which was already under monitoring at the time of the earthquake because of its remarkable leaning angle. Immediately after the seismic events, monitoring of the bell tower was repeated. Digital levelling indicated a marked differential settlement of the foundations with regard to the trend of secular movement, while terrestrial laser scanning (TLS) revealed a significant increase of the inclination of the tower's axis, confirming the results from levelling and showing good integration of both monitoring techniques.  相似文献   

足球运动科学化训练监控体系构建与实证研究评述     

马宁 《四川体育科学》2014,(6):65-70

采用文献资料等方法,对当前足球运动训练监控体系的构建与其应用指标的相关问题进行全面梳理。研究表明：现阶段足球运动训练监控体系的分类与构成主要包括身体机能监控、训练负荷监控、身体素质监控、膳食与营养监控以及心理监控。每类监控内容体系之下都有相应的监控指标与理论方法作指导,并通过实证案例研究对训练监控的具体应用于实践进行阐述,并以此为基础对未来足球运动训练的科学监控做出展望。  相似文献   

室内暴力智能监控系统设计     

邹斌斌  缪婉璐  王斌  曹坚 《人天科学研究》2013,(6):50-52

介绍了一种基于视频的室内暴力监控系统。主要通过图像敏感色检测、图像帧序列的运动检测两个方面进行暴力事件监控识别,再利用计算机对监控信息进行分析处理,把计算机分析的结果传送到监控者手中。  相似文献   

食品安全网络监控系统设计研究     

柳飞  丁筑红 《人天科学研究》2013,(9):76-78

食品安全问题是现代科技亟待解决的核心问题之一,需要从源头开始对有害食品的流通渠道进行监控。基于食品安全角度,分析了常规的流通环节、监管对象和监督机制,提出了基于物联网技术平台的食品流通监控系统,详细设计了源头追溯模块、报警模块和管理模块,以实现对食品生产、加X-、存储、物流和销售等各环节的监管。  相似文献