公路用计重式费额显示器的设计

提出了一种实用的适用于高速和普通收费公路计重式费额显示器的设计方法,该设备可以针对不同的车辆类型,显示计重或非计重的收费金额,整个设备的硬件部分主要是由控制板、显示板及不锈钢机壳构成,软件部分则实现了收费金额的显示及与收费计算机之间的数据传输,现该设备已在新建的宁太（江苏）高速公路全线正常运行一年多。     

基于WindowsCE的嵌入式多生理参数采集显示系统

实现了一种能对多种生理参数进行实时检测、存储、分析、显示及报警的嵌入式系统,采用S3C2440作为核心控制器,使用CAN总线实时传递生理参数信号,用WindowsCE作为操作系统协调软件界面与硬件的运作;图形用户软件界面考虑到生理参数数据量大,实时性要求高的特点,利用自定义的消息方式和多线程技术充分提高程序的实时性和代码的执行效率;程序运用面向对象的思想,便于后续功能的开发;通过和高实时性的PC测试程序波形比较表明,本系统具有很强的实时性和稳定性,可以实现预期的监测功能。     

基于FPGA的视频采集及实时显示系统设计

针对现有的目标识别及跟踪系统项目,为了便于其调试以及后期对目标的位置信息进行监控,对图像采集及实时显示方面进行了研究,设计了基于FPGA的视频采集及显示系统,首先进行硬件选型并搭建硬件平台,对各模块进行分析,编写驱动程序,设计SDRAM控制器,改进了现有的乒乓操作,并使用FIFO完成跨时钟数据的交互,保证了数据流的连续性。实验结果表明使用该乒乓操作后,消除了两帧图像切换时由于时钟不同步带来的图像交错,能够稳定的完成视频采集及实时显示的功能。实践表明该系统能够满足采集存储的速度,达到实时采集并显示的目的,具有运行稳定、可扩展性好等特点。     

基于DSP+PCI结构的噪声信号采集处理系统

研究了一种基于PCI总线的高速数据采集处理系统,采用PCI9054作为PCI总线接口芯片和DSP芯片ADSP2188N作为系统通用硬件平台,详细介绍了该系统的工作原理及软硬件设计方案。该系统能满足灵活加载程序、对采集的大容量数据进行实时处理等要求,同时具有一定的可扩展性。试验证明该系统能正确对空间噪声信号进行实时采集和高速处理,在高频地波雷达中得到了很好的应用。     

实时数码显示测速装置的设计及实现

该文设计了一种简单易行的实时数码显示测速装置.该测速装置利用光敏管感光特性,当光直接照射时导通,无光照射时截止.后由单片机AT89C2051进行数据处理得到速度,再配合数码管驱动芯片HD7279A及键盘矩阵操作以显示速度和更好地控制,通过工程应用从硬件和软件两方面分别进行了详细介绍.     

基于FPGA的P2020处理器显示接口设计

针对目前使用的飞思卡尔高性能通信处理器P2020无内置LCD控制器,不方便在某些需要显示界面的中小设备中直接应用的问题,提出了基于CPU＋FPGA的显示接口设计方案,给出了硬件原理框图、FPGA逻辑实现原理框图以及设计结果,在项目中成功应用并满足需求。     

发动机爆炸帽测试技术研究

为了测试发动机爆炸帽的参数,开展了"发动机爆炸帽测试技术研究"项目,在充分研究的基础上探索研制硬件的可能性.本项目以微处理器技术为核心,利用桥式测量电路、仪表放大器电路、控制显示电路等实现爆炸帽参数的精确测量,成功研制出硬件样机,并在某型重点直升机生产领域进行了应用和推广,研制的发动机爆炸帽参数测试仪已在上百架某型直升机的试飞、试验实践中应用.应用结果表明:该试验系统具有精度高、可靠性强、经济适用等优点;采用的设计方法属国内首创,填补了国内该项技术的空白.     

基于EP1K30TC144的视频捕捉处理的设计与实现

提出一个基于FP6A技术的视频捕捉处理系统的设计方案以及视频信息的捕捉、存储、显示和发送的实现方法。采用FPGA芯片EP1K30TC144,构成视频图像信息捕捉的硬件系统,利用MAX＋PLUS Ⅱ开发工具,设计并实现了系统软件。具有灵活、实用和可扩展等特点。     

Overlap Operations and Raster Graphics

This paper outlines the development of a volume and surfaces modelling system for use with raster graphic displays. The ideas are presented in a historical framework to make the reasoning behind the design decisions clear and to indicate the main influences which have guided the work. There are two outcomes of importance: a language form for defining volumes and surfaces; and hardware to convert this representation directly into a display. The hardware provides hidden-line or hidden-area removal as a display primitive which, in an appropriate implementation, can be fast enough to support a range of real-time display applications. Linked to this hidden-line, hidden-area removal facility is an ability to provide interference tests for objects that are being moved around in a scene. Again there appears to be a hierarchy of applications ranging in complexity from interactive volume editing to robot control and vision systems. The new facilities complement existing point and line based display operations, on which most current displays' hardware is based. A good case is emerging for integrating the two approaches into a single hardware implementation for CAD workstations and for simulator display systems.     

A computer graphics course for the two cultures

The subject of computer graphics offers a special educational opportunity for bringing together students from the two cultures of the arts/humanities and of the sciences/technologies. The author describes a computer graphics course with this approach. Several important problems arise because of students' varying backgrounds in programming and their expectations, the lack of suitable texts, and the lack of suitably-oriented computer graphics centers. The course schedule is composed of lectures, discussions of readings, and workshops in a computer graphics facility. The hardware and software basis of the course is flexible. Students complete an assigned initial project, a final project of their choice, and are responsible for documenting their project visually and verbally before the close of the semester. Student performance and evaluation of the course suggest this cross-cultural approach is a valid, worthwhile experiment to introduce the structure and significance of computer graphics imagery and computer graphics display systems.     

Kernel虚拟机的3D图形加速方法

针对当前Kernel虚拟机(KVM)中3D图形硬件加速不完善的现状,提出一种支持OpenGL加速的改进方法。把提供虚拟机3D应用程序加速的开源虚拟机图形库运行在KVM上,使其支持应用程序OpenGL图形加速,并通过对VMGL框架和功能的改进,使得宿主机渲染后的图像结果回显到KVM上,实现虚拟机上的图形加速。     

Building and using a scalable display wall system

Princeton's scalable display wall project explores building and using a large-format display with commodity components. The prototype system has been operational since March 1998. Our goal is to construct a collaborative space that fully exploits a large-format display system with immersive sound and natural user interfaces. Our prototype system is built with low-cost commodity components: a cluster of PCs, PC graphics accelerators, consumer video and sound equipment, and portable presentation projectors. This approach has the advantages of low cost and of tracking technology well, as high-volume commodity components typically have better price-performance ratios and improve at faster rates than special-purpose hardware. We report our early experiences in building and using the display wall system. In particular, we describe our approach to research challenges in several specific research areas, including seamless tiling, parallel rendering, parallel data visualization, parallel MPEG decoding, layered multiresolution video input, multichannel immersive sound, user interfaces, application tools, and content creation     

应用于桥梁健康监测中的应变测量系统

桥梁健康监测系统是近年应用于桥粱管理与维护的一项新技术,具有重要的工程价值.论述了桥梁健康监测系统中的应变和温度测量系统的设计方法,介绍它的硬件组成、软件结构以及系统功能.该系统利用C8051F350单片机实现数据采集与传送,上住机利用DelDhi实现数据的显示与处理.     

Analytical model for three-dimensional light-field displays based on voxel construction

Three-dimensional light-field displays (3D-LFDs) can provide viewers with glass-free 3D images. The display effect of reconstructed 3D images is closely related to the number of 3D object points that the 3D display system can construct, which can be regarded as the information quantity of the 3D-LFDs. However, the information quantity presented by a 3D-LFD is limited by fixed hardware parameters such as display panels and optical components. It is difficult to present an ideal 3D visual experience with the increase in display depth. In this paper, an analytical model based on voxel construction for 3D-LFDs is proposed, which can estimate the information quantity that a 3D-LFD can reproduce. The variation regularity of information quantity with display depth is analyzed and the influence of hardware parameters on display effect is discussed. With the proposed strategies, the display effect can be improved in a targeted manner without blurring and aliasing by adjusting the hardware parameters in display systems and matching the information quantity at different display depths.     

一种LED图文显示屏系统的研制

本文阐述构建16×64点阵通用智能显示单元,以及用通用智能显示单元构建LED图文显示屏系统的原理。给出与计算机联用实现实时显示的方法以及相应的软硬件框图。实践证明,这种设计思想有利于系统硬件生产的规范化,大大方便了系统硬件的生产,而整个系统的功能用软件实现,即硬件功能软化。     

基于四象限调速的直流电机控制器设计

介绍了基于单片机的直流串激电机四象限调速控制器。此控制器通过调节光电编码器的旋转方向及角度实现对直流串激电机转速和转向的控制;由功率场效应管组成可逆PWM系统实现了直流电机的四象限运行;同时对为系统供电的铅酸电池电压实时采样,由多个发光二极管显示电压范围;由霍尔电流传感器反映流经电机电枢的电流,当发生过流时采取硬件和软件双重保护。经过实际运行表明研制的串激直流电机控制系统达到了设计要求。     

自动铡皮机微电脑控制器的设计与实现

针对基于单片机的智能仪器仪表类产品的需求和特点,设计并实现了一款基于STC89C52单片机的微电脑自动铡皮机控制系统,该控制系统包括中文人机界面、键盘控制、LCD液晶显示等功能模块。该系统利用了结构化设计方法,在STC89C52单片机硬件平台上实现了人机操作界面的液晶显示,通过软件编程可以实现参数的输入、显示、修改、保存和传递等功能,独特的键盘电路的设计节约了硬件防抖电路的开销,该系统已投入实际应用。     

无线传感器网络硬件平台的选型与搭建

本文介绍了一种基于无线传感器网络的智能家居监控系统的硬件平台的实现方案。根据实际要求,从低成本、低功耗、小型化等方面考虑,对组成该硬件平台的各大模块进行了选型分析与电路搭建,以满足嵌入式的无线数据通信硬件平台的要求。     

基于MC8051内核的便携幅频特性测试仪设计

为满足实际工程应用的需要,研制了以嵌入式MC8051内核为核心技术的便携式幅频特性测试仪。系统以Xilinx公司生产的型号为XC3S400的FPGA芯片为硬件处理核心,以MC8051内核作为用户交互界面设计的控制核心。采用"正弦查找表IP核+D/A"的方式实现DDS技术并产生系统扫频信号,以异步FIFO作为FPGA与MC8051内核之间数据传输的缓存模块,同时采用TFT彩屏液晶进行显示界面设计。     

嵌入式现场智能显示系统的设计与实现

在对国内外工业控制领域、组态软件及嵌入式技术进行深入研究后,针对目前工业监控中存在的信息处理能力较弱、适应性较差等问题,提出了一种基于嵌入式软、硬件平台的智能显示系统,阐述了在基于ARM9的硬件平台及嵌入式Linux操作系统环境下采用组态软件思想进行智能显示软件的开发过程,详细介绍了智能显示软件的模块化设计及主要模块架构。该方案实现了面向不同环境信息输出需求的快速重构功能。