基于FPGA的地震数据采集单元改进与实现

针对国内普遍使用的CirrusLogic地震数据采集套片的不足,开发了一种采用ADS1282的新型四通道24位地震数据采集单元,在采样率1000SPS,前放增益0dB时等效输入噪音小于1.31μV,谐波失真小于0.00013%,满足国家标准规定的石油地震数据采集系统A级指标要求,具有性能更优、功耗更小、成本更低的优势;采用FPGA作为控制器,攻克了协调控制多路ADS1282和FPGA产生测试位流等关键技术;配套开发了基于LabVIEW的采集单元测试系统,采用USB通信并供电,整套系统也可作为便携式检波器测试仪使用。     

基于FPGA的传感器网络数据采集传输系统设计

针对目前传感器网络数据采集系统采用顺序处理器件做为控制器,造成数据采集效率低、实时性不能满足设计环境需求、安全控制机制有限、系统设计复杂等问题,提出在硬件上采用可灵活设计且片内资源丰富的FPGA作为设计载体,协议上采用物理层和应用层具备一定扩展能力的分层式实时传感器网络通信协议（HRTSN,Hierachical-Real—TJmeSensorNetwork）实现的传感器网络数据采集系统。通过建立多层安全控制机制,有效提高了系统对传感器网络可靠性的要求和实时事件的响应处理能力。     

Android系统下SAE J1939协议的移植

针对Android系统下的控制器局域网(CAN)总线缺少应用层驱动的现状,提出了一种将Linux系统中的CAN总线应用层驱动移植到Android系统中的方法。选择SAE J1939协议作为Android系统下CAN总线应用层协议并移植由Kurt Van Dijck和Pieter Beyens维护的linux-can-j1939项目。首先分析项目结构,将对应文件合并到Android内核代码中;然后修改头文件、协议实现代码并增加内核缺失的结构体、函数等;最后修改Makefile和Kbuild文件并编译生成内核。实验结果表明:编译后的Android内核实现了SAE J1939协议所规定的地址声明、数据拆包重组、网络管理等功能。应用层驱动移植后,通过调用Android应用层接口就可开发丰富的基于CAN总线的Android应用程序。     

基于WSN和μC/OS-Ⅱ的无线数据采集系统的研究和实现

针对工业数据采集系统在环境恶劣或者布线不便以及有线的缺陷情况,提出采用无线射频(0～1000MHz)和蓝牙技术实现无线通信接口,借鉴无线传感器网络的思想,设计了无线数据采集系统;无线数据采集系统使数据采集和组网更加方便,易实现多网关通信,节省了大量的布线;描述了无线数据采集系统结构,设计了硬件设计方案,制作了系统实物,采用μC/OS-Ⅱ为内核编写网关软件提高系统的实时性和可靠性,并对系统进行了测试;该课题研究的思想在实时无线数据采集系统中有广泛的应用.     

基于FPGA的多路同步实时数据采集系统

结合数据采集系统在电力系统中的应用,设计了一种基于FPGA的多路同步实时数据采集系统,该系统将多个功能模块集成到一片FPGA中,构成片上可编程系统,使用一片FPGA完成对A/D转换和双口RAM等模块的控制;给出了系统的硬件原理框图,并结合系统的设计方案对其中的主要功能模块进行了阐述;以此构成的多路同步实时数据采集系统具有性能稳定、实时性强、集成度高、扩展性灵活等特点。     

基于DSP的多路温度采集系统硬件电路设计

设计了一种基于DSP的多路温度采集系统,用于采集和处理多路温度数据。系统采用了温度传感器LM35和DSP芯片,并结合相关的程序和软件,实现了多路温度数据采集和处理。该系统硬件电路简单,同时相对于单片机的数据采集系统更能满足系统在精确度和实时性方面的要求。实验证明,系统具有较好的实时性、方便性和安全性,可用于大多数工农业领域的实时温度采集。     

基于STM32的多通道数据采集系统设计

针对地质灾害监测领域对数据采集系统的低功耗与实时性要求,提出了一种基于STM32F103和ADS1256的多通道数据采集系统,可实现对地质灾害现场泥水位、地声、次声、位移等多参数的实时在线数据采集。系统具备体积小、功耗低、实时性强等特点。系统可实现24小时实时存储灾害点采集时间、采样数据、环境温度及传感器类型等相关信息,并通过GPRS或北斗卫星实现数据的无线远程传输,便于长时间不间断对地质灾害体进行数据采集、传输与分析,可有效提高对地质灾害体的实时监测水平。     

Windows设备驱动程序的实时内核设计

针对工业控制领域中对Windows操作系统的实时性需求,提出在Windows驱动程序中设计实时内核并进行任务调度的方法.着重研究了Windows驱动实时系统的实现方案和系统结构以及实时内核的任务调度设计和任务切换过程,完成了Window s驱动实时系统的设计与开发工作.通过对所设计系统的测试,验证了系统具有较好的实时性能,能满足一般工业控制场合的需求.     

基于ADS8364的多通道高速数据采集处理系统

提出了一种基于ADS8364的多通道同步实时数据采集处理系统的设计与实现方案,给出了硬件接口电路及部分关键的程序.该设计以ADS8364与TMS320LF2407A-40为核心器件,具有6个独立的A/D通道,能实现16位数据采集.将该系统应用到语音实时处理中,结果表明,该系统能够满足实时语音处理要求,效果较好.     

基于μC/OS-Ⅱ智能监控分站节点的设计

为了提高井下安全系统分站节点的监控性能,利用μC/OS-Ⅱ在ARM Cortex-M3硬件平台上开发设计基于CAN总线的矿用分站节点,实现了井下环境参数的实时监测,同时可连接控制设备实现实时智能控制,并可通过安全可靠的CAN总线与中心分站通信.节点采用多路开关实现多路多种信号的智能采集,提高了节点的智能化.软件设计采用多任务和优先级抢占调度机制,实现任务问的并发运行,保证了系统的实时性和可靠性.采用数字滤波技术,减少了数据采集的误差.     

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.