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智慧养猪已成为生猪产业发展的新趋势,其核心主要聚焦于智能环控、智能饲喂和对猪群的视频监控等技术的应用.大数据采集是实现智能化的前提,因此,通过射频识别(RFID)技术建立猪只大数据是实现智慧养猪的基础.通过正确的猪只个体识别技术的选型,在不同生命周期给猪只选配合适的电子耳标,给猪只建立精准的身份证明.在不同阶段的数据采... 相似文献
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智能喷水灭火装置不同布置方式技术分析 总被引:1,自引:0,他引:1
在考虑喷水强度和喷水均匀性的基础上,文章针对智能喷水灭火装置的特性并综合国内一些工程实践经验,对智能喷水灭火装置的主要几种布置形式做出了技术分析比较,指出对于狭长型建筑物应采取单排布置形式,在多行列布置时宜被首选应用. 相似文献
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Landscape irrigation scheduling efficiency and adequacy by various control technologies 总被引:1,自引:0,他引:1
M.S. McCreadyM.D. Dukes 《Agricultural Water Management》2011,98(4):697-704
Automated residential irrigation systems tend to result in higher water use than non-automated systems. Increasing the scheduling efficiency of an automated irrigation system provides the opportunity to conserve water resources while maintaining good landscape quality. Control technologies available for reducing over-irrigation include evapotranspiration (ET) based controllers, soil moisture sensor (SMS) controllers, and rain sensors (RS). The purpose of this research was to evaluate the capability of these control technologies to schedule irrigation compared to a soil water balance model based on the Irrigation Association (IA) Smart Water Application Technologies (SWAT) testing protocol. Irrigation adequacy and scheduling efficiency were calculated in 30-day running totals to determine the amount of over- or under-irrigation for each control technology based on the IA SWAT testing protocol. A time-based treatment with irrigation 2 days/week and no rain sensor (NRS) was established as a comparison. In general, the irrigation adequacy ratings (measure of under-irrigation) for the treatments were higher during the fall months of testing than the spring months due to lower ET resulting in lower irrigation demand. Scheduling efficiency values (measure of over-irrigation) decreased for all treatments when rainfall increased. During the rainy period of this testing, total rainfall was almost double reference evapotranspiration (ETo) while in the remaining three testing periods the opposite was true. The 30-day irrigation adequacy values, considering all treatments, varied during the testing periods by 0-68 percentile points. Looking at only one 30-day testing period, as is done in the IA SWAT testing protocol, will not fully capture the performance of an irrigation controller. Scheduling efficiency alone was not a good indicator of controller performance. The amount of water applied and the timing of application were both important to maintaining acceptable turfgrass quality and receiving good irrigation adequacy and scheduling efficiency scores. 相似文献
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综合运用传感器技术、网络通信技术和构件开发技术,研制开发集数据采集、远程控制、数据挖掘应用等多种功能于一体的基于Web的智能客厅菜园管理系统,建立客厅菜园的数据采集体系与远程控制体系,研究提出了基于数据应用的客厅菜园种植策略。对于提高客厅菜园的智能化控制水平具有重要意义。 相似文献
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利用田间监测技术采集作物信息,可以实时获取田间作物的生长情况,并做出相应决策,对提高作物的产量和品质有重要作用。针对依赖于人工采样测量的传统作物田间监测方法存在效率低下、主观性强、特征单一等缺点,田间作物的快速监测、信息获取及分析技术成为了当下的研究热点。本文从采集目标、监测平台以及不同数据(信息)分析方法 3个方面分析了国内外田间作物监测技术的研究现状,总结了目前我国田间作物监测中存在的问题,并对今后在监测技术创新、信息解析技术、数据(信息)标准化与共享化,以及基础设施及推广方面的发展提出了建议,以期为我国田间作物监测技术的创新和产业发展提供参考。 相似文献
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Compression wood is formed by the living tree to compensate for external loads. It creates wood fibers with properties undesirable in sawn products. Automatic detection of compression wood can lead to production advantages. A wood surface was scanned with a spectrometer, and compression wood was detected by analyzing the spectral composition of light reflected from the wood surface within the visible spectrum. Linear prediction models for compression wood in Norway spruce (Picea abies) were produced using multivariate analysis and regression methods. The resulting prediction coefficients were implemented in a scanning system using the MAPP2200 smart image sensor combined with an imaging spectrograph. This scanning system is capable of making a pixelwise classification of a wood surface in real time. Classification of one spruce plank was compared with analysis by scanning electron microscopy, showing that the automatic classification was correct in 11 of 14 cases. 相似文献