基于物联网的智能家居远程无线监控系统设计

基于ARM920T内核的S3C2440、嵌入式Web服务、QT技术、无线组网技术,设计了智能家居监控系统,系统由智能家居主机、ZigBee/Wi-Fi无线传感控制网络、智能家居客户端软件组成。系统完成了智能家居主机的硬件和软件设计：在ARM平台上移植嵌入式Linux操作系统;使用gSOAP工具建立嵌入式Web服务;配置USB转串口驱动、无线Wi-Fi网卡驱动;组建ZigBee无线传感控制网络,完成对协调器节点以及终端节点的程序设计,制定了数据通信协议;使用QT技术设计客户端程序。最后,重点测试ZigBee网络的建立、终端节点入网和传感器节点数据传输。测试结果表明网络中的传感器节点能够将检测的信息传送到协调器中,智能家居客户端软件能够通过智能家居主机完成对家居环境的远程监测和控制。     

基于ZigBee和Modbus的无线远程控制系统的实现

为了提高工农业管理的网络化和智能化水平,设计了一个基于ZigBee技术和Modbus协议的无线远程监控系统.首先,由传感器采集现场数据并传给终端,终端接收并显示数据,同时自动与协调器绑定组建ZigBee网络,协调器将这些信息以兼容Modbus协议的格式通过串口转Wi-Fi,发送给无线路由,最终发给由力控组态软件编写的上位机.这样我们就可以远程实时监控现场情况.同时,上位机也可以把信息和命令发送给终端,也间接地实现了终端与终端之间的交流.     

无线传感器网络协调器的研究和设计

基于TI公司的ZigBee协议栈,研究ZigBee协议及其在嵌入式平台上的实现和应用。ZigBee数据的收发采用Chipcon CC2420射频IC实现,协调器利用ARM9芯片S3C2440,通过LCD触摸屏扩展了人机界面,用户可以方便地查看各设备的详细信息。系统实现了基于ZigBee的短距离无线数据采集,为无线传感器网络的建立提供了良好的平台。     

基于CC2530的ZigBee的智能家居设计

基于ZigBee的无线传感网络在工业、家居、医疗等行业领域的发展成为发展的一种趋势,采用TI公司的Z－STACK协议栈,在IAR的开发环境下,以CC2530芯片为核心控制各传感器构建出家居的无线传感器网络。分布在各个房间的传感器为一个终端节点,收集到的传感信息通过星型网络无线发给协调器,协调器通过串口发送给上位机显示出终端节点所在的房间、传感器类型、网络地址和传感器数据或者状态。通过分析各个房间的传感器数据或状态,我们可以通过串口发送相应的命令到协调器上,协调器通过单播的方式发送信息到相应房间的节点上,实现开关灯及窗帘,最终实现ZigBee网络通信和家居控制。     

基于ZigBee和Android手机的无线监控系统设计

针对智能家居、环境监测等对实时性的要求,提出了一种将近距离无线接入技术与Android、嵌入式技术相结合的无线监控系统设计方案;在高性能嵌入式平台上实现Wifi、ZigBee的接入,根据实际应用环境的需要,选用相应传感器实现对环境变量的数据采集,通过ZigBee无线组网方式进行数据收发;另外,将Android手机终端通过Wifi与嵌入式平台建立连接并实现数据传输,ZigBee终端接收无线传感器节点发出的数据,通过协调器将数据信息发送给嵌入式平台,数据经过处理以后反馈给智能手机终端,手机端根据接收到的数据进而输出相应的指令;文中介绍了系统的软件设计流程,对系统整体实验证明节点性能良好、通讯距离较为理想,该系统具有较好的通用性,能够满足实时性的要求.     

矿井监测系统网关的设计

利用CC2430无线收发模块实现数据的采集和无线传输,现场采集器采集数据并通过逐级跳转的方式把数据传送到协调器,协调器通过RS232串行口与ARM处理器通信并实现在ARM上的实时数据采集和显示,ARM处理器最终通过网线连接井下路由器与井上PC机进行通信,接入局域网中的客户端可以随时以网页形式访问ARM上的数据以及实时的视频监控。以网页的形式访问ARM上由ZigBee传来的数据是该项目中的一大创新点,此外,协调井下ARM与井上PC间通信的路由器本身就具有易于扩充节点和扩大网络规模的优势。     

基于Zigbee的无线温度监测系统的设计与实现

随着传感器技术和无线通信技术的发展,ZigBee技术得到广泛应用,在数据实时监测与采集等方面,其应用优势更为显著。该文设计并实现的基于ZigBee的无线温度监测系统使用多个CC2430模块,一个作为ZigBee协调器,其余作为温度数据采集端。温度数据采集端采集温度数据并通过ZigBee协议上传至ZigBee协调器,ZigBee协调器通过串口将数据汇集到上位机中,从而实现数据的实时监测。本系统的完成有助于改变传统人工的收集数据方式,实现数据的实时收集,适用环境监测,智能家居,工业监测等领域。     

基于ZigBee的智能家居控制系统的研究与设计

基于智能家居控制系统的不足和发展现状,采用ZigBee技术和GPRS技术把家庭网络与外界网络进行连接来控制智能家居系统。使用ARM920T内核的S3C2440微处理器作为中央控制器,家庭内部采用ZigBee技术无线组网,远程手机用户通过发送短信,将控制家电设备的命令传送给中央控制器,再由中央控制器通过ZigBee无线网络发送命令给家电控制终端,最终达到远程控制终端设备的目的,并且终端通过GPRS网络把设备的运行状态发送给用户。     

基于ZigBee技术的环境检测报警系统设计

设计了一种可以检测环境温湿度,烟雾浓度和外界入侵的无线检测报警系统.传感器终端将检测到的教据通过ZigBee无线通信协议传输给协调器,协调器通过RS232串口将数据传输给PC机,最终环境数据显示在PC机的串口调试助手中.利用此系统时环境的多种参量进行了无线实时多点检测,试验结果表明,环境检测数据清晰全面.由此可见,本系统具有应用价值.     

智能家居监控系统

本设计是由ARM嵌入式网关、ZigBee协调器、ZigBee传感器节点构成的智能家居控制系统。通过ARM11作为主控制器并利用internet网络实现远程访问,以CC2530和各种传感起作为zigbee协调器和zigbee传感网络的硬件。本文主要的工作是移植嵌入式Linux操作系统、构建Web服务器Boa;设计Zigbee数据采集的软硬件和CGI程序。最终,本系统为用户提供了一个通过Internet了解家庭环境、设备状况,控制家居电子电气设备的平台。     

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。     

煤矿井下安全监控分站的设计及其仿真实现

为了设计一种具有低成本、低功耗、易操作、功能强且可靠性高的煤矿井下安全分站,针对煤矿安全生产实际,文章提出了采用MCS-51系列单片机为核心、具有CAN总线通信接口的煤矿井下安全监控分站的设计方案;首先给出煤矿井下安全监控分站的整体构架设计,然后着重阐述模拟量输入信号处理系统的设计过程,最后说明单片机最小系统及其键盘、显示、报警、通信等各个组成部分的设计;为验证设计方案的可行性与有效性,使用Proteus软件对设计内容进行仿真验证,设计的煤矿井下安全监控分站具有瓦斯、温度等模拟量参数超标报警功能和电机开停、风门开闭等开关量指示功能;仿真结果表明:设计的煤矿井下安全监控分站具有一定的实际应用价值.     

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.     

View-based model-driven architecture for enhancing maintainability of data access services

In modern service-oriented architectures, database access is done by a special type of services, the so-called data access services (DAS). Though, particularly in data-intensive applications, using and developing DAS are very common today, the link between the DAS and their implementation, e.g. a layer of data access objects (DAOs) encapsulating the database queries, still is not sufficiently elaborated, yet. As a result, as the number of DAS grows, finding the desired DAS for reuse and/or associated documentation can become an impossible task. In this paper we focus on bridging this gap between the DAS and their implementation by presenting a view-based, model-driven data access architecture (VMDA) managing models of the DAS, DAOs and database queries in a queryable manner. Our models support tailored views of different stakeholders and are scalable with all types of DAS implementations. In this paper we show that our view-based and model driven architecture approach can enhance software development productivity and maintainability by improving DAS documentation. Moreover, our VMDA opens a wide range of applications such as evaluating DAS usage for DAS performance optimization. Furthermore, we provide tool support and illustrate the applicability of our VMDA in a large-scale case study. Finally, we quantitatively prove that our approach performs with acceptable response times.     

A pragmatic multi-method investigation of discrepant technological events: Coping,attributions, and ‘accidental’ learning

Discrepant technological events or situations that entail a problem, a misunderstanding or a difficulty with the Information Technology (IT) being employed, are common in the workplace, and can lead to frustration and avoidance behaviors. Little is known, however, about how individuals cope with these events. This paper examines these events by using a multi-method pragmatic approach informed by coping theory. The results of two studies – a critical incident study and an experiment – serve to build and test, respectively, a theoretical model that posits that individuals use a variety of strategies when dealing with these events: they experience negative emotions, make external attributions, and adopt engagement coping strategies directed at solving the event, eventually switching to a disengagement coping strategy when they feel they have no control over the situation. Furthermore, users’ efforts may result in ‘accidental’ learning as they try to overcome the discrepant IT events through engagement coping. The paper ends with a discussion of the results in light of existing literature, future opportunities for research, and implications for practice.