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1.
设计了一种基于STC15单片机的U盘实时海量数据采集系统。该系统利用USB接口芯片CH376对U盘进行读写操作,利用实时时钟芯片DS12887实时采集记录数据的时间,将采集到的海量数据以EXCEL文件形式存储在U盘中。实验结果表明,该方案能够采集、存储海量数据而且还兼顾成本低、通用性强、移动性好等优点,具有一定实用价值。  相似文献   

2.
针对目前飞行数据记录器对数据的大容量和高速存储的需求,提出了一种以DSPIC30F6014A控制USB接口芯片CH378读写U盘数据,并添加FPGA控制读写大容量Flash数据作为高速数据缓冲以实现脱离计算机存储高速大容量数据至U盘的设计方案。该方案能够实现大容量数据存储功能,并能够极大地提高U盘读写数据的速度,具有设备体积小、成本低和便于携带等优点,很大程度缓解了数据存储的压力,具有很广阔的应用前景。  相似文献   

3.
以NIOS-Ⅱ处理器为核心,构建一个SOPC系统,控制CH376文件管理芯片,将采集的数据以文件形式写入U盘中,以满足现场大容量数据的快速采样存储的需要。由于FPGA具有输入输出引脚多、运行速度快和可编程的特点,只要软件稍作修改,即可将数据存入SD卡中。经过软硬件的综合测试,能成功实现系统各项功能。  相似文献   

4.
蒋峰 《计算机测量与控制》2012,20(9):2435-2436,2442
为实现对家居环境的远程和无线控制,提出了一种将无线通信技术与以太网接入技术整合进行家居环境安全智能监控的设计方案;该方案根据家居环境安全的实际需要,选用相应传感器进行环境变量的数据采集,利用无线射频通信方式进行数据传送;并通过以太网接口芯片ENC28J60实现以太网接入,达到对整个家居环境安全进行远程监控的目的;文中介绍了该系统的硬件结构及软件设计流程,阐述了本方案的具体应用;经与远程终端的联通测试,表明该系统能够实现Ping通及接入以太网,从而满足设计需要.  相似文献   

5.
基于以太网硬件协议栈的DSP嵌入式系统设计   总被引:3,自引:0,他引:3  
应用以太网硬件协议栈芯片技术,设计并实现了具有网络数据高速传输功能的DSP嵌入式系统.以太网选用专用芯片WS100,该芯片适用于嵌入式系统,并具有Intemet协议.通过配置系统网络信息来实现整套系统的TCP和UDP连接,同时以Server或Client模式进行数据传输.以基于WS100的DSP嵌入式数据采集系统为例,通过合理编写程序和配置各寄存器,验证表明,系统可以通过以太网成功传输数据.  相似文献   

6.
设计了一种基于FPGA的遥测PCM信号源,该信号源采用FPGA作为主控芯片,U盘读写控制芯片CH376读取U盘中的遥测数据,并以一定码速率发送出去产生PCM信号.数据的发送采用边读取、边发送的方式,在FPGA内部配置了两块存储器,采用乒乓操作保证数据发送的连续性.软件主程序的编写是设计核心,运行在NiosⅡ软核处理器上,控制硬件模块协调工作.  相似文献   

7.
针对U盘等存储设备的安全隐患及用户的安全需求,分析目前常见的解决方法,遵循灵活方便、高安全性的原则,利用SoPC技术,设计实现了一款基于NiosⅡ的U盘安全控制器.详细论述了安全控制器的系统设计、硬件架构、固件划分和工作流程.采用高强度的密码算法,对普通U盘中的数据进行扇区级的加解密,保证U盘中数据的安全,具有灵活安全...  相似文献   

8.
针对数据采集系统在速度、容量和体积方面的需求,文中提出了一种基于FPGA的便携式高速数据采集系统方案,采用可充电锂电池作为供电电源,采用FPGA控制读写大容量Flash数据作为高速数据缓冲,控制USB接口芯片CH378完成对U盘的读写操作,实现大容量数据的可靠和便携存储;详细介绍了该测试系统的设计背景、硬件电路的设计依据、固件程序的设计思想和测试系统的具体实现;实验结果表明,该系统具有成本低、通用性强、可靠性高、便携式操作等优点,能够实现数据的高速采集,海量存储,实现了脱离计算机直接存储数据至U盘的功能。  相似文献   

9.
基于FPGA器件的高速以太网入侵检测系统设计与实现   总被引:7,自引:5,他引:2  
本文设计并实现了一种基于FPGA芯片的G比特以太网入侵检测系统。该系统将以太网数据帧头部和数据帧负荷相分离。首先利用Xilinx公司的XC2V1000型FPGA芯片实现数据帧头部的匹配;然后利用操作系统核心态模块实现数据帧负荷的匹配。从而将操作系统计算量降至最低.极大地提高了入侵检测系统整体性能实验数据证明.该系统可有效实现对高速以太网中多种攻击的检测与响应。  相似文献   

10.
本文利用PHY芯片88E111和FPGA实现了千兆以太网,并将其成功应用于激光三维物体测量中,通过vs2013编写了上位机软件.文章的最后给出了利用千兆以太网传输测量人体三维数据的测试结果,表明其可靠性及实时性.  相似文献   

11.
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.  相似文献   

12.
European Community policy and the market   总被引:1,自引:0,他引:1  
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.  相似文献   

13.
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。  相似文献   

14.
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.  相似文献   

15.
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.  相似文献   

16.
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  相似文献   

17.
《计算机科学》2007,34(4):148-148
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.  相似文献   

18.
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.  相似文献   

19.
正The 34th Chinese Control Conference and SICE Annual Conference 2015(CCCSICE2015)is organized by the Technical Committee on Control Theory(TCCT)of Chinese Association of Automation(CAA)and the Society of Instrument and Control Engineers(SICE)of Japan,and locally organized by Hangzhou Dianzi University(HDU).  相似文献   

20.
该文利用DF与CHI统计量相结合的特征选取方法,针对互联网上对外汉语相关领域的网页进行特征提取,并在此基础上,构建了基于标题与正文相结合的两步式主题相关度判定分类器。基于该分类器做对外汉语相关主题的网页爬取工作,实验表明,效率和召回率比传统分类器都有较大程度的提高,目前该分类器已经用于为大型对外汉语语料库构建提供数据源。  相似文献   

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