Codesign [hardware/software partitioning]

Hardware/software design is also known as the codesign methodology. This type of design raises some interesting problems since it deals with concurrent hardware and software development. The main issue is implementing a system with a minimal amount of application specific hardware communicating with a standard processor. The paper considers how codesign raises a lot of problems, such as specification, system modeling, partitioning mechanisms, software and hardware implementation and interfaces     

基于S7-200 PLC的波峰焊机控制系统研究

在电子产品工艺中，波峰焊接是主要的焊接方法之一。波峰焊机控制系统的性能直接影响到电子产品的焊接质量。本文介绍了基于S7-200 PLC的波峰焊机控制系统总体设计方案，主要包括硬件系统设计，软件系统设计、控制算法研究等等。硬件系统包含步进电机控制模块、通信模块、温度采样模块等几个主要模块，软件系统包含上位机软件和下位机软件。文章对基于继电反馈的模糊PID参数自整定算法进行了深入的研究。     

测量航空发动机转速的便携式系统的开发

本文详细介绍了一种测量航空发动机转速的以FPGA(XC2S100E 6PQ208C)为测量转速核心处理芯片,嵌入式单片机(S3C2410)为数据处理器的便携式系统的设计方法.详细介绍了系统的硬件组成和软件设计,并利用ISE6.2的集成开发环境编写了测量转速的软件程序,给出了系统测量的仿真波形.仿真结果表明,该设计方案符合设计要求.     

基于单片机和FPGA的高速测频系统的开发

本文介绍了一种以FPGA为测频核心处理芯片,单片机(C8051F020)为数据处理器的高速测频系统的设计方法,并详细地介绍了系统的硬件组成和软件设计,给出了FPGA的仿真结果.实验结果表明,该方案完全符合设计要求.     

基于DSP的无刷直流电机模糊控制系统的设计

针对传统的速度、电流双闭环控制系统不能随外界变化而调整PID参数和控制精度不高等缺点,提出了将模糊算法应用到无刷直流电机(BLDCM)控制系统中.采用工控芯片TMS320F2812型DSP作为处理器,实现了模糊控制系统的全数字化.对控制系统的硬件进行了设计,运用C语言编程进行了软件设计,通过试验证明了该系统设计的正确性.实验结果表明,该模糊控制系统运行平稳,具有较高的控制精度和较好的鲁棒性.     

基于16位单片机的智能循线和避障机器人设计

本文介绍了一种具有智能循线和避障功能的机器人设计方案,机器人系统包括控制系统的硬件和软件设计。硬件部分主要包括控制器、传感器和电机控制电路,控制器采用16位单片机SPCE061A,循线和避障机器人的驱动采用直流电机驱动,使用红外传感器检测轨迹线和障碍物,实现了机器人的自动控制和语音控制的结合。     

基于图像处理的智能车辆设计

介绍了自行设计的视觉导航的智能车,它综合应用了图像处理、单片机控制、数据通信等相关理论.智能车的设计包括软件、硬件两部分内容.软件设计包括图像处理、电机控制、数据通信等内容.硬件设计包括控制系统硬件组成,电机驱动控制电路设计.在不同条件下试验证明,该智能车系统实时性好.工作稳定.     

A VHDL synthesis model of the MIPS processor for use in computerarchitecture laboratories

This paper describes and contains the necessary VHDL files to synthesize and simulate a MIPS 32-bit RISC processor core for use in introductory computer architecture classes. This MIPS processor core is based on the design presented in chapters 5 and 6 of the widely used text, Computer Organization and Design the Hardware/Software Interface by David Patterson and John Hennessy. IEEE Standard Logic 1164 is used in the VHDL model and versions are provided for several popular CAD tools. Our experiences in using this model in our introductory computer architecture classes, CmpE 2510 and CmpE 3510, during the past two years are described along with typical laboratory assignments     

220kV集控站的设计与实现

集控站采用分区集控站模式实现区域内受控站的运行监控和管理。数据采集和监控(SCADA)系统采用双服务器、双前置机、双网的网络拓扑结构,硬件平台为IBM系列服务器和工作站,监控工作站、维护工作站为PC工作站;软件采用Unix、Windows混合平台模式,使用Oracle数据库。给出了系统的配置图和软件结构图,叙述了数据采集的流程、系统的指标体系及系统实现的关键技术(前置双网、网络通道的接入、系统远程监视和维护)。     

基于DSP的谐波和无功电流检测

文章根据瞬时无功功率理论提出用数字信号处理器（DSP）来检测和分离三相谐波和无功电流的方法，并设计出系统硬件和软件，最后给出了实验结果。     

基于ARM11的麦克风控制系统研究

介绍了一种基于ARM11的麦克风控制系统的硬件、操作系统驱动部分的设计与实现.采用继电器对外部进行控制,并使用片上AD采集语音信号.系统的处理器运用了高性能低功耗S3C6410A ARM11芯片作为主处理器,操作系统采用Linux系统,使板上FLASH进行数据存储,外部采用有触摸屏进行输入,软件系统采用Nokia公司...     

An FPGA Design Project: Creating a PowerPC Subsystem Plus User Logic

This paper presents a reference design and tutorial for an embedded PowerPC subsystem core with user logic in a Xilinx field-programmable gate array (FPGA). The design and tutorial were created to help graduate students who are doing research in complex electronic applications and want to prototype their designs in an FPGA. Specifically, the design provides a starting point for any application that requires an embedded processor plus user logic that is external to the processor block, but must interface to it. In addition, this material is useful as a supplementary laboratory module in advanced FPGA design (for senior- and graduate-level courses). The design project provides a practical introduction to system-on-chip (SOC) design, embedded processor design, hardware–software codesign, and general FPGA development. The authors' assessment shows that even third-year electrical engineering students can complete the tutorial successfully (within approximately three hours). The design database and tutorial document are publicly available and can be downloaded from a website at The University of British Columbia (UBC), Vancouver, BC, Canada.      

New Algorithms for Computer Based Power System Measurements for Relaying

Abstract

The paper presents two new algorithms for power system measurements for computer relaying. The algorithms involve the design of a discrete-time digital filter which interpolates the signal samples and generates Fourier Co-efficients either by using spectral observations or a functional expansion technique. Sample designs are presented for voltage and current phasor estimation during system transients. A method for including decaying dc and harmonic frequency components in the filter design is also described in the paper. Both computational and on-line test results using an LSI-11/23 microcomputer for power system phasor estimation are presented in the paper.     

基于可编程控制器的工业污水处理自动控制系统设计

结合污水处理工艺的特点,介绍了系统的构成和控制方式,采用西门子WinCC组态软件和工业以太网解决方案,设计了污水处理自动控制系统.介绍了自控系统硬件和软件设计,硬件采用SIMATICS7-300型可编程控制器PLC结合现场仪表进行数据采集和控制执行;软件采用WinCC组态软件作为上位机控制平台,通过各监控画面可随时对整个系统运行参数、设备状态等进行实时监测控制,监控画面包括主画面和中和池、调节池等分画面,从而实现整个系统的自动控制和集中管理.给出了WinCC与PLC之间的通信实现方法.     

An undergraduate microcontroller systems laboratory

This paper discusses a course in microcontroller system design which was revised to facilitate improved student learning outcomes. The course aimed to develop design and technical skills, as well as communication and team management skills. A problem based learning (PBL) approach was taken, and the focus of the course was on the laboratory where the students worked on a major design project. Hardware was developed for the laboratory using the Motorola 68HC11 microcontroller which enabled the students to undertake a range of design activities. The students formed groups and were assigned a realistic design project to undertake over a semester. Evaluation of this course was obtained from students, staff and an external reviewer, and the results show that the revised course achieved its educational objectives     

A computer construction project that is both educationally soundand can be completed in one semester

A student-built, expandable computer project for the Electrical Engineering Microprocessor laboratory is described. The design goals include low-cost, modern instruction set, availability of inexpensive hardware and software tools, and a level of fabrication complexity within reach of the student. Hardware and software tools are introduced and various methods to obtain them are discussed. The project demonstrates a sequential method that assists the beginning student in building and “turning-on” the computer. The method is applicable to more complex digital machines. Logic diagrams for the basic system are included. Fabrication details including power bus management and by passing are discussed. Suggestions are given to extend the computer to accommodate other microprocessors, memory and I/O devices     

管道声通信智能传感系统设计与实现

管道声通信在一些特殊的场合存在一定的应用价值。设计并实现了一种智能、快速、低功耗的管道声通信系统。提出了一种声音混频编码通信的方法,设计了一套适用的、可靠的通信协议。系统设计过程包括硬件设计和算法软件设计两部分。以ARM处理器为处理核心,通过对不同频率的声音进行混频来编码,对混频信号进行快速傅里叶变换、峰值检测来解码。实验结果显示,系统可以迅速可靠地实现管道声通信。     

ZigBee技术在远程计算机电源控制系统中的应用

论述了在无人值守的远程计算机管理中,如何实现在远程控制计算机的电源开关。采用软、硬件相结合设计方案,ARM7嵌入式处理器为硬件核心,设备之间采用ZigBee通信,网关设备通过GPRS网络与服务器通信,电源控制设备通过GPIO口控制外部继电器开关,实现弱电控制交流强电输出的开关切换和模拟计算机的电源按键动作。以Delphi编写服务器端软件、被控计算机控制端软件和管理端软件,配合Or-acle 10g数据库和TCP/IP协议,实现电源控制功能。     

An educational image processing/machine vision system

The author describes an image processing/machine vision that was developed specifically for educational use. Most systems used in educational settings were not designed specifically for such use. In many cases, most of a student's laboratory time is spent learning the particular system in use, rather than the complexities of the assigned algorithm. The IBM PC based system described here, which consists of an adapter card for the PC, a standard black-and-white video camera and monitor, and a collection of image processing algorithms, eliminates this problem. The major advantages of the system described are its low cost and extremely simple programming interface. Both the hardware design of the adapter card and the software interface are described     

用于NIOS II嵌入式处理器系统的鼠标控制器设计

Altera公司推出的NIOS II嵌入式处理器系统已经成为嵌入式设计的一个重要方向,但目前它的SOPCbuilder系统开发工具中并没有提供PS/2键盘和鼠标的IP核。为了适应部分嵌入式系统中要求用户操作方便的需要,本文详细介绍了一个用于NIOS II处理器系统的鼠标控制器的设计。本文依据Avalon从模式设备的接口规范和PS/2协议,设计了一个在NIOS II下支持标准PS/2(IBMPS/2)和微软的Intelli mouse规范的鼠标控制器。经实验验证,我们的设计有效的支持了标准PS/2(IBMPS/2)和微软的Intelli mouse模式。