移动终端的设施农业物联网环境监控系统设计

通过使用物联网(IOT)传输协议—消息队列遥测传输(MQTT)协议,将前端硬件、服务器端及移动端连接在一起,完成对设施农业环境的远程实时监控.在系统中,前端硬件以STM32微处理器为核心,由传感器模块、设备控制模块、GPRS模块和电源模块组成,实现数据的采集和传输;服务器端有数据接收、存储、分析的能力,并担任MQTT消息协议中消息生产者和消息管理者的角色;移动终端软件则以Android操作系统为基础开发了应用软件,用户在装有Android系统的移动终端上安装该应用软件,即可查看实时环境情况,发送控制设备指令等.经过测试,整个系统运行稳定、使用简单、实时性高,用户能有效地对设施农业环境进行远程实时监控.     

由nRF905构成的实验室环境数据采集系统

目前,大部分实验室的环境数据监控仍然采用人工巡查的方式进行,且不能够实时监控,效率低.本系统以nRF905作为无线数据收发模块,提出了实验室环境数据采集方案的设计,可以实时将各类传感器采集的环境数据通过nRF905模块无线发送给主机,巡视管理人员可以在监控室监控实验室环境情况.实际的测试表明,该系统可以提高监控效率,节约人力成本,布置灵活,适应范围广.     

输配电开闭所环境及安全综合监控系统的设计

为防止未及时发现故障或安全隐患而对无人值守的开闭所造成更大的损失,根据开闭所环境监控系统物理模型,分析了系统功能和需求,采用Visual C#设计了输配电开闭所环境及安全综合监控系统软件.在结构上划分为系统配置管理、实时监控、数据查询3个主模块.实现了对多种类环境传感器及安全传感器参数信息的实时采集,并将数据通过网络上传到调度中心,从而使调度中心人员可实时查看在地域上分散的多个开闭所的环境安全状况.     

基于3G的无线视频家居安防系统设计

当家中的各种传感器发现意外情况时,监控前端节点进行视频采集,通过CC2430组建的家庭内部无线网络平台及时向主控平台发送视频信息;主控平台中断报警,并通过3G模块呼叫用户实现实时观察;主控平台视频信息异处备份,有效避免入侵者破坏信息.在系统平台上以不同的H.263编码质量测试表明使用高级质量选项对运动剧烈的画面更为有效;以不同速率测试表明,比特率越高则图像越清晰,但略有延迟,当画面运动较剧烈时,比特率越高接收图像越清晰;实现了安全可靠的远程实时3G无线视频监控系统.     

森林火灾智能预警系统设计与实现

森林火灾在自然界频发,给各个国家带来了不小的损失,一套森林火灾智能预警系统的设计就显得尤为重要。本设计基于ZigBee智能组网系统,由火警信息采集系统前端模块、系统数据转发模块以及远程终端模块组成。通过系统的前端数据采集模块实时将森林现场的火警信息传递给终端模块,这些信息经过终端处理后形成信息判断,即可以在数据监控中心实时显示报警,可通过手机终端发送给巡逻人员,对现场进行实时监控。     

森林火灾智能预警系统设计与实现

森林火灾在自然界频发,给各个国家带来了不小的损失,一套森林火灾智能预警系统的设计就显得尤为重要。本设计基于ZigBee智能组网系统,由火警信息采集系统前端模块、系统数据转发模块以及远程终端模块组成。通过系统的前端数据采集模块实时将森林现场的火警信息传递给终端模块,这些信息经过终端处理后形成信息判断,即可以在数据监控中心实时显示报警,可通过手机终端发送给巡逻人员,对现场进行实时监控。     

基于传感检测技术的智能农田监控系统

本系统使用的是51单片机作为主控制芯片,采集端使用多种传感器,经过ATK-ESP8266 WiFi模块将数据传输到云平台实时远程监控水稻生长的状况.本系统可用于对农田水稻在生长过程中各种参数的变动进行监控,可完成对稻田中的温度、湿度、光照度和土壤酸碱度的实时监控.通过对数据进行分析,当稻田中各参数值超出正常数值时,系统...     

远程测斜监控系统的开发和研究

远程测斜监控系统是为了解决建筑施工过程中监测数据得不到实时采集和处理的问题.系统由数据采集模块,CPRS无线发送接收模块,图形界面显示与控制三大模块组成.通过数字传感器和Nios Ⅱ构件的平台采集得到工程数据,利用GPRS通讯技术发送数据至PC机进行图形界面显示与控制.系统在岩土工程、斜坡变形检测等得到应用,而且提高了实时监控力度和管理效率,减少了施工事故的发生.     

基于Android的实时移动视频监控客户端

提出了一种基于Android系统的实时视频监控系统客户端的设计实现方案。系统采用Vitamio作为多媒体开发框架,传输模块采用RTP/RTSP协议。分别从流媒体设备地址管理模块、流媒体视频播放模块和摄像头取景串流模块3个部分阐述了完整的移动图像视频采集、压缩、传输系统。实验结果表明,该移动视频终端具有压缩性能好,视频图像清晰、实时性能好等特点,可以满足实际监控项目应用场景。     

百家争鸣 卓绝群伦

卓振机房环境监控系统,是基于数字化、网络化、智能化的监控系统,由监控系统管理平台、嵌入式环境监控主机、数据采集模块、各种传感器、系统报警设备及前端被监测设备组成。总体架构基于TCP／IP网络和现场总线,中间不需要任何协议转换模块、多功能串口卡、工控机等。     

Only connect: teaching, technology and telesis

Abstract This paper describes an approach to the design of interactive multimedia materials being developed in a European Community project. The developmental process is seen as a dialogue between technologists and teachers. This dialogue is often problematic because of the differences in training, experience and culture between them. Conditions needed for fruitful dialogue are described and the generic model for learning design used in the project is explained.     

European Community policy and the market

Abstract This paper starts with some reflections on the policy considerations and priorities which are shaping European Commission (EC) research programmes. Then it attempts to position the current projects which seek to capitalise on information and communications technologies for learning in relation to these priorities and the apparent realities of the marketplace. It concludes that while there are grounds to be optimistic about the contribution EC programmes can make to the efficiency and standard of education and training, they are still too technology driven.     

一种自适应子融合集成多分类器方法

融合集成方法已经广泛应用在模式识别领域,然而一些基分类器实时性能稳定性较差,导致多分类器融合性能差,针对上述问题本文提出了一种新的基于多分类器的子融合集成分类器系统。该方法考虑在度量层融合层次之上通过对各类基多分类器进行动态选择,票数最多的类别作为融合系统中对特征向量识别的类别,构成一种新的自适应子融合集成分类器方法。实验表明,该方法比传统的分类器以及分类融合方法识别准确率明显更高,具有更好的鲁棒性。     

Avoiding semantic and temporal gaps in developing software intensive systems

Development of software intensive systems (systems) in practice involves a series of self-contained phases for the lifecycle of a system. Semantic and temporal gaps, which occur among phases and among developer disciplines within and across phases, hinder the ongoing development of a system because of the interdependencies among phases and among disciplines. Such gaps are magnified among systems that are developed at different times by different development teams, which may limit reuse of artifacts of systems development and interoperability among the systems. This article discusses such gaps and a systems development process for avoiding them.     

Designing economic np control charts: A programmed simulation approach

This paper presents control charts models and the necessary simulation software for the location of economic values of the control parameters. The simulation program is written in FORTRAN, requires only 10K of main storage, and can run on most mini and micro computers. Two models are presented - one describes the process when it is operating at full capacity and the other when the process is operating under capacity. The models allow the product quality to deteriorate to a further level before an existing out-of-control state is detected, and they can also be used in situations where no prior knowledge exists of the out-of-control causes and the resulting proportion defectives.     

The development of robot art

Going through a few examples of robot artists who are recognized worldwide, we try to analyze the deepest meaning of what is called “robot art” and the related art field definition. We also try to highlight its well-marked borders, such as kinetic sculptures, kinetic art, cyber art, and cyberpunk. A brief excursion into the importance of the context, the message, and its semiotics is also provided, case by case, together with a few hints on the history of this discipline in the light of an artistic perspective. Therefore, the aim of this article is to try to summarize the main characteristics that might classify robot art as a unique and innovative discipline, and to track down some of the principles by which a robotic artifact can or cannot be considered an art piece in terms of social, cultural, and strictly artistic interest. This work was presented in part at the 13th International Symposium on Artificial Life and Robotics, Oita, Japan, January 31–February 2, 2008     

Explanation and prediction: an architecture for default and abductive reasoning

Although there are many arguments that logic is an appropriate tool for artificial intelligence, there has been a perceived problem with the monotonicity of classical logic. This paper elaborates on the idea that reasoning should be viewed as theory formation where logic tells us the consequences of our assumptions. The two activities of predicting what is expected to be true and explaining observations are considered in a simple theory formation framework. Properties of each activity are discussed, along with a number of proposals as to what should be predicted or accepted as reasonable explanations. An architecture is proposed to combine explanation and prediction into one coherent framework. Algorithms used to implement the system as well as examples from a running implementation are given.     

Three Process Perspectives: Organizations, Teams, and People

This paper provides the author's personal views and perspectives on software process improvement. Starting with his first work on technology assessment in IBM over 20 years ago, Watts Humphrey describes the process improvement work he has been directly involved in. This includes the development of the early process assessment methods, the original design of the CMM, and the introduction of the Personal Software Process (PSP)^SM and Team Software Process (TSP){^SM}. In addition to describing the original motivation for this work, the author also reviews many of the problems he and his associates encountered and why they solved them the way they did. He also comments on the outstanding issues and likely directions for future work. Finally, this work has built on the experiences and contributions of many people. Mr. Humphrey only describes work that he was personally involved in and he names many of the key contributors. However, so many people have been involved in this work that a full list of the important participants would be impractical.     

基于复小波噪声方差显著修正的SAR图像去噪

提出了一种基于复小波域统计建模与噪声方差估计显著性修正相结合的合成孔径雷达(Synthetic Aperture Radar,SAR)图像斑点噪声滤波方法。该方法首先通过对数变换将乘性噪声模型转化为加性噪声模型,然后对变换后的图像进行双树复小波变换(Dualtree Complex Wavelet Transform,DCWT),并对复数小波系数的统计分布进行建模。在此先验分布的基础上,通过运用贝叶斯估计方法从含噪系数中恢复原始系数,达到滤除噪声的目的。实验结果表明该方法在去除噪声的同时保留了图像的细节信息,取得了很好的降噪效果。     

基于QTE的蒙古文显示机制研究与实现

蒙古语言是中国蒙古族使用的通用语言,由于蒙古文区别于其他文字的书写方式和其自身变形机制等特点,在很多通用的文字处理引擎中都不被支持。在嵌入式产品开发与应用领域中Linux加QTE已经成为流行方式。该文给出了一种在QTE环境上实现基于标准Unicode的蒙古文点阵显示和变形算法, 并自定义了支持蒙古文的QTE组件,扩展了QTE功能,为在Linux加QTE方式的嵌入式体系结构中处理蒙古文提供了一种解决方法。