S3C44B0X与LM2028的接口及其编程

简要描述了S3C44B0X内置的LCD控制器和图形点阵式液晶显示模块LM2028的主要特性,给出了S3C44B0X与LM2028的硬件电路连接图。并在此基础之上,详细介绍了基本图形、图像、中英文字符在LCD模块上的显示方法。     

基于ARM的指纹识别硬件平台的设计

本文是在对指纹识别系统和ARM的深入学习和掌握的基础上,以三星S3C2440A为核心对指纹识别系统进行了硬件平台的搭建,介绍了系统各个模块中电路器件的选择,以及对存储模块、LCD显示模块、JTAG接口和指纹采集模块进行了电路设计,最后通过嵌入式Linux操作系统的移植使整个硬件平台可以实现指纹识别。     

基于ARM的SF6中微水含量检测系统

介绍了一种以ARM处理器S3C44B0为核心、利用红外光谱原理对SF6气体中水分含量进行监测的实时在线检测系统。系统运用基于分子辐射吸收理论的红外检测技术,设计了探测水分的光电传感器;开发了以S3C44B0为核心,包括A／D转换模块、LCD液晶显示模块、基于串口的GPRS通信模块等在内的ARM中央硬件处理平台。与传统检测设备相比,该系统灵敏度高,重复性好,实时性强,是测量精度达到0．001％,是测量SF6气体中微水分含量的理想设备。     

基于红外传感器和ARM的大气有害气体浓度监测系统

介绍了以ARM处理器S3C44B0为核心、利用红外光谱原理对大气有害气体浓度进行监测的实时在线检测系统.通过对测试原理和方法的充分论证之后,设计了气体浓度检测的红外传感器.开发了以S3C44B0为核心,包括A/D转换模块、LCD液晶显示模块、RS485通讯模块等在内的ARM中央硬件处理平台.与传统的同类传感器相比,具有...     

基于S3C44BOX的LCD接口设计和实现

针对ARM芯片S3C44BOX内置的强大的LCD控制器,通过分析其底层驱动的工作原理,给出了S3C44BOXLCD控制器与LCD芯片LTBHBT203G31K接口的典型应用设计方案,在此基础上设计了与不同LCD模块连接时的通用设置方案.实验结果表明,该设计方法可快速应用于LCDS3C44BOX与多种LCD的接口配置中,且适用性好、通用性强.     

基于DSP的图文显示系统

介绍了TMS320C6713型DSP的主要特点和LCM320240ZK液晶显示模块的基本使用方法.给出了C6713 DSP的GPIO接口与液晶显示模块之间的连接方法,并通过C语言程序详细描述了在6800时序基础上实现对LCM320240ZK液晶显示模块的控制步骤,实现了基于DSP的图文显示系统,文中的关键代码可以移植在其他微处理器与LCD液晶显示模块的连接设计上.     

基于ARM的真彩LCD驱动程序设计

该文首先研究了SAMSUNG S3C2440 ARM芯片的LCD控制模块及液晶屏的接口,然后研究了NEC NL2432 3.5寸LCD真彩液晶屏的逻辑及成像原理。在此基础上,基于LINUX操作系统,对LCD驱动程序进行研究和实验,实验结果表明:本文研究出的LCD驱动程序适应性好,能够适应上述硬件芯片环境;系统稳定性好,能够得到清晰稳定的真彩画面。     

基于ARM9的指纹识别器的设计

介绍了指纹识别的一般原理,详细阐述了CPU S3C2440A和HB7121B的各模块结构及其功能;并且给出了S3C2440A与指纹识别器HB7121B的连接,完成了指纹识别器的硬件设计。同时,讨论了Linux操作系统的嵌入和应用软件的编写,完成了指纹识别器的软件设计。该设计方案将ARM9技术引入指纹识别领域,将对ARM技术的应用和指纹识别的发展产生促进作用。     

基于S3C44B0X的LCD接口设计和实现

针对ARM芯片S3C44B0X内置的强大的LCD控制器,通过分析其底层驱动的工作原理,给出了S3C44B0XLCD控制器与LCD芯片LTBHBT203G31K接口的典型应用设计方案,在此基础上设计了与不同LCD模块连接时的通用设置方案。实验结果表明,该设计方法可快速应用于LCDS3C44B0X与多种LCD的接口配置中,且适用性好、通用性强。     

嵌入式系统中LCD控制器通用驱动程序的设计和实现

液晶显示已成为嵌入式系统应用的一个重要组成部分.使同一LCD控制器的驱动程序移植到各种嵌入式微处理器平台上,能极大地提高LCD驱动的复用性和开发效率,降低产品开发风险和成本.本文给出了一种嵌入式系统中LCD控制器通用驱动程序的设计和实现方法,并以TOSHIBA公司CMOS型单色LCD控制器T6963C为例,介绍了其通用驱动程序的设计及其在AT89C52、SPCE061A及PHILIPS ARM LPC2106上的移植过程.     

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.     

Call for Papers The 6^th International Conference on Grid and Cooperative Computing

Recent years have seen rapid advances in various grid-related technologies, middleware, and applications. The GCC conference has become one of the largest scientific events worldwide in grid and cooperative computing. The 6th international conference on grid and cooperative computing (GCC2007) Sponsored by China Computer Federation (CCF),Institute of Computing Technology, Chinese Academy of Sciences (ICT) and Xinjiang University ,and in Cooperation with IEEE Computer Soceity ,is to be held from August 16 to 18, 2007 in Urumchi, Xinjiang, China.     

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.     

The Distributed Time-Triggered Simulation Scheme: Core Principles and Supporting Execution Engine

Distributed real-time simulation is a young technology field but its practice is under increasing demands. In recent years the author and his collaborators have been establishing a new approach called the distributed time-triggered simulation (DTS) scheme which is conceptually simple and easy to use but widely applicable. The concept was initiated in the course of developing a new-generation object-oriented real-time programming scheme called the time-triggered message-triggered object (TMO) programming scheme. Some fundamental issues inherent in distributed real-time simulation that were learned during recent experimental studies are discussed along with some approaches for resolving the issues. An execution engine developed to support both the TMOs engaged in control computation and the TMOs engaged in DTS is also discussed along with its possible extensions that will enable significantly larger-scale DTSs.     

Software-Konfigurationsmanagement in großen Softwareprojekten

Zusammenfassung Mit zunehmender Größe der Softwaresysteme verschärfen sich die für die Software-Herstellung typischen Probleme: Beherrschen großer Objektmengen, Erhalten der Systemkonsistenz, Kontrolle der ständigen Änderungseinflüsse und Gewährleisten einer langen Lebensdauer. Die Disziplin Konfigurationsmanagement bildet den methodischen Ansatz, diese Probleme besser zu beherrschen. Software-Konfigurationsmanagement faßt die Herstellung von Softwaresystemen als eine Abfolge von kontrollierten Änderungen an gesicherten Zwischen- und Endergebnissen auf. Dargestellt werden die Objekte und Funktionen des Software-Konfigurationsmanagements sowie die hierfür in großen Software-Projekten benötigten Methoden, Instanzen und Hilfsmittel.     

Information for Authors

正http://www.zju.edu.cn/jzus http://www.springerlink.com Aim The Journals of Zhejiang University-SCIENCE(A/B/C)are edited by the international board of distinguished Chinese and foreign scientists,and are aimed to present the latest developments and achievements in scientific research in China and     

Editorial:Brain-machine interface(BMI) and cyborg intelligence

正Brain-machine interfaces(BMIs)aim at building a direct communication pathway between the brain and an external device,and represent an area of research where significant progress has been made during the past decade.Based on BMIs,mind information can be read out by neural signals to control     

Information for Authors

正http://www.zju.edu.cn/jzus http://www.springerlink.com Aim The Journals of Zhejiang University-SCIENCE(A/B/C)are edited by the international board of distinguished Chinese and foreign scientists,and are aimed to present the latest developments and achievements in scientific research in China and overseas to the world’s scientific circles,especially to stimulate     

SCIENCE CHINA Information Sciences SUBJECT INDEX TO VOLUME 57(2014)

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