首页 | 官方网站   微博 | 高级检索  
文章检索
  按 检索   检索词:      
出版年份:   被引次数:   他引次数: 提示:输入*表示无穷大
  收费全文   951篇
  免费   43篇
  国内免费   29篇
工业技术   1023篇
  2023年   5篇
  2022年   3篇
  2021年   8篇
  2020年   11篇
  2019年   5篇
  2018年   5篇
  2017年   9篇
  2016年   37篇
  2015年   39篇
  2014年   50篇
  2013年   74篇
  2012年   85篇
  2011年   72篇
  2010年   53篇
  2009年   36篇
  2008年   67篇
  2007年   68篇
  2006年   52篇
  2005年   71篇
  2004年   74篇
  2003年   63篇
  2002年   43篇
  2001年   19篇
  2000年   16篇
  1999年   11篇
  1998年   10篇
  1997年   9篇
  1996年   5篇
  1995年   4篇
  1994年   6篇
  1993年   4篇
  1992年   5篇
  1990年   2篇
  1989年   1篇
  1988年   1篇
排序方式: 共有1023条查询结果,搜索用时 15 毫秒
81.
This article presents a method for classifying color points for automotive applications in the Hue Saturation Intensity (HSI) Space based on the distances between their projections onto the SI plane. Firstly the HSI Space is analyzed in detail. Secondly the projection of image points from a typical automotive scene onto the SI plane is shown. The minimal classes relevant for driver assistance applications are derived. The requirements for the classification of the points into those classes are obtained. Several weighting functions are proposed and a fast form of an euclidean metric is investigated in detail. In order to improve the sensitivity of the weighting function, dynamic coefficients are introduced. It is shown how to compute them automatically in order to get optimal results for the classification. Finally some results of applying the metric to the sample images are shown and the conclusions are drawn.
Jianwei ZhangEmail:

Calin Rotaru   is a PhD candidate at the Department of Computer Science, University of Hamburg, Germany. His PhD work focuses on the topic color machine vision for driver assistance systems and is supported by Volkswagen AG, Group Research Electronics. He graduated (2002) with the topic “Stereo Camera Based Object Recognition” for Driver Assistance Systems from the Faculty of Automation and Computer Science of the Technical University of Cluj-Napoca, Romania. His research interests include color machine vision, smart vision systems, multisensorial data fusion and vision in driver assistance systems. Thorsten Graf   received the diploma (M.Sc.) degree in computer science and the Ph.D. degree (his thesis was on “Flexible Object Recognition Based on Invariant Theory and Agent Technology”) from the University of Bielefeld, Bielefeld, Germany, in 1997 and 2000, respectively. In 1997 he became a Member of the “Task Oriented Communication” graduate program, University of Bielefeld, funded by the German research foundation DFG. In June 2001 he joined Volkswagen Group Research, Wolfsburg, Germany. Since then, he has worked on different projects in the area of driver assistance systems as a Researcher and Project Leader. He is the author or coauthor of more than 40 publications and owns several patents. His research interests include image processing and analysis dedicated to advanced comfort/safety automotive applications. Dr. Jianwei Zhang   is full professor and director of the Institute of Technical Aspects of Multimodal Systems, Department of Computer Science, University of Hamburg, Germany. He is one of the Chair Professors “Human-Computer Interaction” of the Department of Computer Science of Tsinghua University. He received his Bachelor (1986) and Master degree (1989) from the Department of Computer Science of Tsinghua University, and his PhD (1994) from the Department of Computer Science, University of Karlsruhe, Germany. His research interests include multimodal information processing, robot learning, service robots, smart vision systems and Embodied Intelligence. In these areas he has published over 120 journal and conference papers, six book chapters and two research monographs. He leads numerous basic research and application projects, including the EU basic research programs and the Collaborative Research Centre supported by the German Research Council. Dr. Zhang has received multiple awards including the IEEE ROMAN Best Paper 2002.  相似文献   
82.
以PCI9030芯片为例,介绍了在wind。ws2000操作系统环境下,使用开发工具Driver Works开发PCI设备驱动程序的基本方法。对其中的关键技术做了较详细的讨论。同时简要介绍了驱动程序的安装和调试.  相似文献   
83.
文章介绍了LENZE变频器的发展及相应的故障处理。  相似文献   
84.
力控组态软件下的设备驱动程序开发   总被引:2,自引:0,他引:2  
本文简要介绍了三维力控组态软件I/O驱动程序接口开发工具包(FIOS SDK),然后以力控组态软件与C8051单片机的RS-485异步串行通信为例,给出了如何运用FIOS SDK在Visual C++ 6.0中开发设备驱动程序的步骤,包括界面的设计和代码的编写。  相似文献   
85.
介绍了一种带驱动变压器的功率MOSFET驱动电路,通过对功率MOSFET输出特性曲线的分析,说明了设计功率MOSFET驱动电路的一般原则,重点分析了隔离变压器初级隔直电容的作用及选择方法,做了仿真分析及实验验证,证明了所设计的驱动电路的正确性。  相似文献   
86.
电动自行车用智能型无刷直流电机驱动器   总被引:6,自引:0,他引:6  
董学明  范承志 《微电机》2006,39(2):97-99
该文介绍了一种基于嵌入式单片机的智能型电动自行车用无刷直流盘式电机驱动器。控制器以P IC 16F 73单片机为核心,通过A/D输入和开关量输入,对各种信号进行检测,根据控制模式产生PWM斩波信号。控制器可实现匀速起动、开关方式或恒流方式过流保护,具有电池欠压保护、超速提示报警等功能,与传统的专用控制芯片机比,控制的灵活性、安全性和舒适性有了很大的提高。  相似文献   
87.
为了使信息系统能够支持企业内外密切协作,企业信息系统的宏观结构是企业间过程集成,Web服务的出现和发展为企业间的过程集成提供了新的实现手段;为了提高信息系统对组织结构和业务流程变化的适应能力,信息系统的业务流程建模及控制与业务功能、业务规则要相互独立;为了实现财务业务一体化,企业信息系统的微观结构要采用业务事件驱动模式。  相似文献   
88.
基于UEFI的Application和Driver的分析与开发   总被引:1,自引:0,他引:1  
UEFI(Unified Extensible Firmware Interface,统一的可扩展固件接口)是由Intel提出的下一代BIOS构架.基于UEFI2.0规范,借助UEFI开发环境:Intel的EDK(EFI Develop Kit),对UEFI Application和UEFI Driver作了一定的分析,并通过两个例子分别予以实现.  相似文献   
89.
嵌入式处理器S3C2440 Windows CE的RTC模块驱动设计与实现   总被引:3,自引:0,他引:3  
简要介绍了S3C2440嵌入式微处理器,分析了S3C2440的RTC(Real-time clock)硬件构架及其工作原理,在此基础上给出了RTC模块在WinCE下驱动程序的设计与实现.最后给出了部分驱动源代码.  相似文献   
90.
基于CPLD的混合式步进电机驱动器设计   总被引:1,自引:0,他引:1  
《自动化信息》2007,(9):44-45
本文介绍基于CPLD的混合式步进电机驱动器的设计。概述了混合式步进电机的驱动原理和电流矢量细分驱动原理,着重对基于CPLD的两相混合式步进电机控制器的硬件和软件设计进行了较为深入的描述。  相似文献   
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司    京ICP备09084417号-23

京公网安备 11010802026262号