基于GPRS的远程诊断车载终端的设计与实现

现阶段开发一种基于GPRS网络的远程诊断车载终端具有重要的现实实际价值和意义.在车载终端建设完成之后,诊断服务的经济性,及时性和专业性都将得到大幅度的提升.本文设计的终端系统是由微处理器,总线控制器,GPRS通信模块和GPS模块四个模块组成的.在本文的设计之中,系统通过总线控制器实现与车载的控制单元的连接,本系统之中的数据在经过微处理器的整合打包之后通过互联网发送到远程的服务器上.本文的重点内容是介绍了远程诊断车载终端的实现原理以及这一系统之中的软件与硬件的具体设计.本文在设计完成之后,利用发动机台架等进行了实际的检测实验,实验的结果表明,本文设计的基于GPRS的远程诊断车载终端运行十分的稳定可靠,可以对汽车的电子控制单元进行实时的监控.     

基于ARM的车载导航定位终端硬件设计

本文研究与设计了一种新型车载导航定位系统的车载导航定位终端,该定位终端以32位ARM微处理器、GPS模块及GSM/GPRS模块为核心。详细介绍了终端的电源系统、通信接口、摄像系统与采集系统的设计,提出了采用ARM的2个32位定时器和PWM定时器配置,结合软件模拟全双工通信串口的新技术,共模拟了5个全双工通信串口,解决了对串口资源的需求。试验表明这种新型车载终端能满足导航定位的需求。     

校车安全智能管理系统设计

本文采用嵌入式物联网综合教学实验平台为车载终端,设计了一种校车安全管理系统,系统硬件电路主要包括指纹识别、RFID刷卡识别、GPS导航、LCD液晶显示、GSM模块、摄像头、语音提示、速度检测、安全距离检测块、烟雾检测等模块。系统可以将校车接送学生的各种信息分别显示在网页平台上和车载终端上,可以通过GSM模块向家长发送即时短信。司机可以通过语音提示辅助驾驶汽车并且通过终端查看学生上下车的情况,同时通过终端智能的控制车内设备。     

车联网中基于GPSONE的露天矿车辆监控定位系统

在当前车联网时代下,针对目前我国露天矿企业运用移动定位技术对车辆进行实时监控的现状,以及传统车辆监控系统中数据传输速度、定位精度等问题,应用一种基于CDMA技术与GPS技术相结合的GPSONE无线通信平台。该平台在搭载CDMA通信模块的车载终端与监控中心服务器之间建立一条费用低,定位精确,实时性高,定位数据传输速度快的无线数据传输通道。在实验中,实现了实时高效的GPS定位数据的传输,及监控中心与车载终端的SMS通信和CDMA数据通信,达到了车联网技术在露天矿车辆监控定位系统中良好的应用。     

基于北斗和Android手机的车载防盗系统设计

提出了一种新的嵌入式车载防盗系统的设计方案.以STC12C5A60S2高速51单片机为核心处理器,引入GSM/GPRS模块、GPS/北斗定位模块和监测模块搭建车载终端硬件平台,在此基础之上开发出一套基于Android平台的客户端软件对系统进行管理.结果表明:利用Android手机软件可高效管理系统的运行,使系统实现了在百度地图中实时标定车辆位置、远程控制车辆断电锁车、与车载端人员进行通信以及线路规划等功能.     

车载感知与智能终端的硬件设计

以S3C2440为核心,以WinCE操作系统作为平台,设计了基于CAN总线的车载感知硬件电路,运用微惯性测量单元实现对汽车自身运动状态的在线测量,并实现信息在智能终端的显示。融合当前流行的智能车载终端模块,实现GPS车载导航、GPRS无线通信、无线上网和智能报警等功能。     

基于GPS/GPRS的车载定位系统设计

介绍了一种基于GPS和GPRS的车载定位终端系统设计.利用GPS卫星数据接收器接收车辆所处的位置信息,通过单片机对车辆位置的有效信息进行存储和控制,当车载终端接收到控制中心的指令后,通过GPRS网络传输车辆的位置信息.详细讨论了车载终端的硬件电路设计,包括控制模块、GPS卫星定位模块和GPRS无线传输模块等.实验证明,该系统性能稳定,通信效率高,功耗低,适用于车载定位监控领域.     

北斗通信与导航一体化车载智能网络终端的开发

为了实现对各类车辆的有效调度、协调控制和管理,提高物流运输的效率和安全性,针对物流系统应用环境,基于STM32微控制器设计开发了一种北斗导航与通信一体化的智能车载网络终端。该终端以STM32F103ZET6微控制器为核心,由北斗定位模块UM220、GPRS模块SIM900A和ZigBee无线网络模块组成。其中,UM220模块负责接收北斗卫星信号定位;SIM900A模块与物流中心通信;无线ZigBee模块用于传输车载物流相关信息。实验表明,该终端能自动完成车载网络数据的采集、处理和传输等功能,满足物流环境下的应用需求。     

基于SMS的执行器无线监控终端的设计

基于SMS无线远程监控的方便性与实用性,本文提出了一种电动执行器无线监控终端的设计方案,描述了以单片机ATmega128和无线数传模块DTGS-800为核心的无线数据监控终端,通过CDMA移动通信系统的SMS业务实现管网中各执行器与管网数据中心进行数据通信的方法.     

基于ARM嵌入式车载监控终端的设计与实现

通过对现有单片机车载监控系统改进研究,提出了新型车载监控终端的硬件设计思路及软件设计方案;给出硬件控制处理器技术开发设计、GPS模块功能强化设计和无线通信GPRS/GSM电路模块应用功能的强化设计思路;实现了在车载终端操作系统管理下主要软件模块的功能,分析了车载监控终端开发关键技术;系统设计经过实验室及装车测试,监控终端实现了基本功能并满足实时性;该设计与以往车载监控终端相比增强了系统的实时性能,同时增强了车载终端产品功能的可延伸性及扩展性。     

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。     

How do children do mathematics with LOGO?

Abstract  This paper considers some results of a study designed to investigate the kinds of mathematical activity undertaken by children (aged between 8 and 11) as they learned to program in LOGO. A model of learning modes is proposed, which attempts to describe the ways in which children used and acquired understanding of the programming/mathematical concepts involved. The remainder of the paper is concerned with discussing the validity and limitations of the model, and its implications for further research and curriculum development.