工程机械远程监测系统中ZigBee网关的设计

以工程机械为对象,研究并设计了一个基于ZigBee无线采集网络和GPRS远程通信的实时远程监测系统的无线网关,该网关由ZigBee协调器模块以及GPRS模块组成,以STM32为网关的核心控制器,并对ZigBee协调器和GPRS模块分别进行选型、硬件及软件设计。实现整个实时监测系统需要的相关技术有:ZigBee无线网络、GPRS、TCP/IP通信技术、Z-stack协议栈。     

基于ZigBee、GPRS和TCP/IP协议的无线网关设计

针对ZigBee无线传感器网络的远程监控技术的实现,设计一个将ZigBee协议与TCP/IP协议有机融合在一起的无线网关.系统运行时,互联网中的远程服务器可通过网关对ZigBee无线传感器网络所有节点进行监控.此网关设计方案成本低廉且易于实现,可以为无线传感器网络在诸多领域的应用开发提供设计参考.     

远程监护系统中ZigBee网关的设计

ZigBee是一种新兴的无线通信技术,本文介绍了一种基于ZigBee的无线网关设计方法并应用到远程监护系统中。完成后的网关设备能实现数据从ZigBee无线传感器网络到互联网的转换,且有较好的通用性,有着广泛的应用前景。详述了该基于双MCU网关的硬件设计方案和在ZigBee协议与TCP/IP协议传输数据的软件编程思路。     

基于ZigBee与GPRS智能医疗监护网关设计

为了实现传感器网络的远程监护,结合ZigBee和GPRS各自的优势和特点,提出了一种基于ZigBee通信技术和GPRS移动通信网络相结合的物联网网关设计方案。该方案基于高速低耗的主控单片机来实现ZigBee协议、TCP/IP、GPRS和GSM的协议之间的转换,可运用于医疗监护及各类需要无线接入物联网的数据处理转发需求,并通过互联网云端Yeelink平台实现远程监测数据的功能。实际测试结果表明,该系统稳定可靠,方便扩展、实时性强。     

基于ZigBee技术的医院供水管网水质监控系统

针对医院供水管网水质问题,设计了基于ZigBee无线传感器网络的水质实时监控系统。监控系统由末端的不同传感器采集水温、pH值、电导率水质参数,通过ZigBee无线网络传送给网关,网关实现ZigBee和TcP/IP协议间的转换后,将数据传送给监控中心进行存储、分析和处理,监控中心可发送命令控制整个网络。该方案不仅可以实现本地和远程水质实时监控,而且很容易应用于其他环境下的水质实时监控。     

ZigBee和GPRS技术在水文监测系统中的应用研究

结合ZigBee和GPRS技术的特点和优势,提出了一种无线水文监测系统解决方案。重点分析了网络协调器节点的软件设计,包括ZigBee协议和GPRS网络连接的实现方法以及ZigBee和GPRS网络数据转换任务的设计。     

基于ARM／GPRS／ZIGBEE水产养殖远程监控系统设计

为了满足水产养殖智能化的要求,设计了水产养殖中水质参数的远程实时监控系统,该系统由基于传感器节点,汇聚节点的水质参数无线监测网络和远程数据管理节点组成。采用以CC2430为核心的ZigBee模块传感器节点方案,构建基于ZigBee协议的无线传感网,实现水质数据采集;应用以ARM9微处理器S3 C2410开发的汇聚节点实现数据的汇聚和GPRS无线通信实现远程数据的传输。利用ZigBee技术和GPRS技术,此系统不仅满足了无线数据采集和数据传输的相关指标要求,而且有效地解决了水产养殖系统中布线困难、节点不可移动、不易维护等问题,满足了水产养殖中水质监测的需要。     

基于ZigBee-GPRS技术的无线传感网络

结合ZigBee和GPRS技术,提出了一种基于二者优势互补的无线传感网络系统实现方案。该方案综合ZigBee技术在短距离、低功耗无线通信和GPRS网络远程数据传输的优势,利用具有ZigBee收发功能的芯片MC13192设计多种类型传感器节点、具有GPRS通信功能的芯片GR47设计ZigBee-GPRS网关,实现了多种参数的实时与远程监控。其技术具有广阔的应用前景。     

基于W5100的无线传感器网络网关设计

介绍了基于W5100的无线传感器网络网关设计,实现了ZigBee无线网络和因特网的相互连接,方便服务端对Zig-Bee网络节点的远程控制和管理,实现远程感知与管理。给出了基于W5100和μC/OS-II的无线传感器网关设计方,实现了软硬件设计,完成了ZigBee网络与因特网之间数据的透明传输和协议转换。     

基于物联网和云计算技术的葡萄园监测系统研究

针对葡萄园精准化、信息化、智能化的发展要求,提出了将云计算技术和物联网技术运用于葡萄园环境数据监测系统,通过传感器、ZigBee无线网络、GPRS技术和云计算技术,系统实现了对葡萄园环境的光照强度、大气环境温湿度、CO_2浓度、土壤湿度、土壤PH传感数据等五类参数的实时监测,同时能够控制设备以调节环境参数设计中使用ZigBee模块搭建了星形无线传感网络,远程网关通过下CP/IP协议和GPRS网络与云服务平台进行数据的双向传输。云服务平台为Web浏览器和手机App终端提供数据并存储控制指令。     

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.     

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。     

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.     

基于AD9626的模拟信号采集存储卡设计

自然界的绝大部分信号都是以模拟的形式存在,因此模拟信号的采集转换存储在数字时代十分关键。文章讨论了在雷达信号处理领域基于AD9626的AD采集存储卡的设计原理、硬件结构和程序设计与芯片配置等问题,为今后相关领域的研究提供了可参考的方案。     

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     

A human-computer interface for non-computer specialists

The COM teleconferencing system was designed to be easy to use for both beginners and people with much computer experience. A number of design choices in organizing the human-computer interface were considered very carefully. These design problems are not unique for teleconferencing applications, but will appear in many other developments of human-computer interfaces for non-computer specialists. This report discusses naming conventions, menu format, user commands, help facility and the treatment of ‘type ahead’ from the users.