The concept of the Altera Nios II embedded processor implementation inside Field Programmable Gate Array [FPGA] of the CCD camera for the “Pi of the Sky” experiment is presented. The digital board of the CCD camera, its most important components, current implementation of firmware [VHDL] inside the FPGA and the role of external 8051 microcontroller is briefly described. The main goal of the presented work is to get rid of the external microcontroller and to design new system with Nios II processor built inside FPGA chip. Constraints for implementing the design into the existing camera boards are discussed. New possibilities offered by a larger FPGA for next generation of cameras are considered.
标签： implementation Programmable processor embedded
上传时间： 2014-01-02
上传用户：dyctj
The major functionality added in this release includes: - Rootless mode in X11 - Widget Templtes [both compiled and XML] As always, this isn t meant to be a stable release, it is only provided so people can more easily experiment with PicoGUI and possibly help in its development. Some of the more significant known bugs: - The PicoGUI laucher may not work right now, it s undergoing some change. - Several of the apps included here are not finished, not started, or otherwise broken. - There is a redrawing bug that may cause flickering on some platforms
标签： functionality Rootless includes release
上传时间： 2014-01-03
上传用户：gxmm
用三点法实现机器人三维位置测量的研究摘 要 ：提 出 了一 种 微 小 爬 壁 机 器 人 三 维 位 置 测 量 的新 方 法 。笔 者 通 过 深 入 分 析 研 究各 种 位 置 测 控 方 法 与 系 统 ，提 出采 用单 目视 觉方 法 中的 聚 焦法 ，以 CCD作 为 传 感 器 ，用 三 点 法 实现 对 机 器 人 的 三 维 位 置 测 量 。 验 证性 实验 结果表 明 ，本研 究提 出的测 量原 理和 系统是 正 确 可行 的 。 关键词 ：机 器人 ；位置 测量 ；CCD传 感 器 ；单 目视 觉 ；摄 像 机 标 定 中 图分 类 号 ：TP242．6 文 献 标 识 码 ：B Abstract：A new 3D position measurementmethod Ofa wall—climbing micro robothas been researched．Researc— hing on the various position measuring and controlling method，theauthorhasputforwardanewprojecttomeas— ure the 3D position of the robot，in which the focusing method with singlecamera and CCD sensorhasbeen used to getthe position information．The elementary experiment has verified the principle and the system． Key words：robot；position detection；CCD sensor；single camera vision；camera caiibration 位置测量技 术是智 能机 器人 的关键 技术 ，是各 种 机器人控 制系统 中极 为重 要 的环节 ，也 是 国内外研 究 的热点所 在。 按 照测试 系统 与被 测机 器 人 的关 系 ，可 以将位 置 测量技术 分为接触 式和非接触式 两大类 。接触 式测量 系统 由于在测 量过程 中或多或少地 对机器人施 加 了载 荷 ，因而仅适用于静 态 位置测 量 。而动 态 位 置测量 系 统 主要分 5类 ：①激光跟踪 系统 ；@ CCD交 互测量 收 稿 日期 ：2001—07—03 基 金项 目：国家 863高科技 研 究 资助 项 目(9804-06)；教 育 部 高 等 学校 骨干教 师 资助 计 3t,j项 目 作者 简 介 ：张 智海 (1973一 )，男 ，工 学硕 士 ，主 要 研 究 方 向 为 智 能 机 器人 测 控 技 术 。 系统 ；③ 超声波 测量 系统 ；④ PSD(positionsensitivede— vice)位 置 测 量 系统 ；⑤ 带 有 接 近觉 传 感 器 的 测量 系 统 。位置测量 还可 以从另一个分类 角度划分为主动式 测量和被动 式测 量 。主动式测 量主要可 以分为结 构光方法和激光 自动聚焦法两类 。被 动式测量 主要 可 以分为双 目视 觉 、三 目视觉 、单 目视觉 等方法 。 对 比以上各种方法 的 优缺 点 ，针对 笔者 研制 的微 小爬壁机器人 的空 间三 维位 置 测量 的要 求 ，测量 系统 必须满足尺 寸小 、分 辨率 高 、稳定 性 和可 靠性 好 、时 间 响应快等特 点 ，提 出了采用 单 目视觉方法 中的聚焦法 ， 选用 CCD作 为传感器 ，用 三点法实现对机器人 的三维 位置测量 ，并用 Matlab和 V
标签： 机器人
上传时间： 2022-02-11
上传用户：突破自我
高清电子书-C++ Primer Plus, 第6版英文版 1438页Learning C++ is an adventure of discovery, particularly because the language accommodates several programming paradigms, including object-oriented programming, generic programming, and the traditional procedural programming.The fifth edition of this book described the language as set forth in the ISO C++ standards, informally known as C++99 and C++03, or, sometimes as C++99/03. (The 2003 version was largely a technical correction to the 1999 standard and didn’t add any new features.) Since then, C++ continues to evolve.As this book is written, the international C++ Standards Committee has just approved a new version of the standard.This standard had the informal name of C++0x while in development, and now it will be known as C++11. Most contemporary compilers support C++99/03 quite well, and most of the examples in this book comply with that standard. But many features of the new standard already have appeared in some implementations, and this edition of C++ Primer Plus explores these new features. C++ Primer Plus discusses the basic C language and presents C++ features, making this book self-contained. It presents C++ fundamentals and illustrates them with short, to-the-point programs that are easy to copy and experiment with.You learn about input/output (I/O), how to make programs perform repetitive tasks and make choices, the many ways to handle data, and how to use functions.You learn about the many features C++ has added to C, including the followi
标签： C++
上传时间： 2022-02-19
上传用户：trh505
基于FPGA设计的相关论文资料大全 84篇用FPGA实现FFT的研究 刘朝晖 韩月秋 摘 要 目的 针对高速数字信号处理的要求，给出了用现场可编程门阵列(FPGA)实现的 快速傅里叶变换(FFT)方案.方法 算法为按时间抽取的基4算法，采用递归结构的块浮点运 算方案，蝶算过程只扩展两个符号位以适应雷达信号处理的特点，乘法器由阵列乘法器实 现.结果 采用流水方式保证系统的速度，使取数据、计算旋转因子、复乘、DFT等操作协 调一致，在计算、通信和存储间取得平衡，避免了瓶颈的出现.结论 实验表明，用FPGA 实现高速数字信号处理的算法是一个可行的方案. 关键词 离散傅里叶变换； 快速傅里叶变换； 块浮点运算； 可编程门阵列 分类号 TP39； TN957.511 Implementation of FFT with FPGA Technology Liu Zhaohui Han Yueqiu (Department of Electronics Engineering, Beijing Institute of Technology, Beijing 100081) Abstract Aim To propose a scheme for implementing FFT with FPGA in accor-dance with the requirement for high speed digital signal processing. Methods The structure of FPGA and requirement of system were considered in the experiment, radix-4 algorithm of DIT and recursive structure were adopted. The group float point arithmetic operation was used in the butterfly and the array multiplier was used to realize multiplication. Results The pipeline pattern was used to ensure the system speed, it made fetching data, calculating twiddle factor, complex multiplication and D
标签： fpga
上传时间： 2022-03-22
上传用户：lostxc
针对嵌入式产品程序更新问题,提出了一种基于IAP技术的STM32单片机在线固件升级方案,设计了STM32单片机最小系统硬件电路和USB转串口通信电路,并给出了Bootloader程序、APP程序、PC上机程序的实现流程.实验结果表明,该方案具有简单实用、稳定性高、维护成本低和设备使用效率高的特点,适用于嵌入式产品升级.For the problem of updating embedded products program,an online firmware upgrade scheme of STM32 single chip microcomputer based on IAP technology is proposed.This scheme not only elaborates the principle of IAP technology in detail but also provides the design of the minimum system hardware circuit of STM32 MCU,the design of USB for serial communication circuit,and the implementation flow of Bootloader program,APP program and PC program.The experiment results show that the scheme is simple,practical and highly stable.In addition,it can be used to actual embedded product upgrading,significantly reducing maintenance costs and improving the efficiency of equipment.
上传时间： 2022-03-25
上传用户：GGMD
设计了农业温湿度智能控制系统,该系统采用DHT11温湿度传感器作为温湿度采集模块,单片机选用AT89C52代替并调用Virtual terminal模拟串口通信,LCD1604液晶显示器实时显示温湿度,实现了温湿度的测量、显示,可自动控制加热、降温、加湿、通风,实现温湿度控制以及超限报警处理,并利用Proteus与Keil进行实际电路的仿真。试验表明,该系统实现了可靠的温湿度监控。We described the design of an intelligent control system of agriculture temperature and humidity.The system uses DHT11 temperature and humidity sensor as the temperature and humidity acquisition module.The SCM adopts AT89C52 to replace and call the virtual terminal for simulating serial communication.LCD1604 displays temperature and humidity in real time,which implements the measurement and display of temperature and humidity.The system is able to automatically control heating,cooling,humidification and ventilation,to achieve temperature and humidity control and over-limit alarm processing.The system also uses Proteus and Keil for actual circuit simulation.The experiment shows that the system is capable of reliable temperature and humidity monitoring.
上传时间： 2022-03-26
上传用户：aben
设计了自动控制系统综合实验案例“基于LabVIEW和单片机的温度控制系统设计”。实验系统硬件部分由单片机、温度传感器、D/A转换模块、调压模块和电烤箱组成,设计了单片机与各个模块之间的接口电路。软件部分采用LabVIEW软件实现控制算法,并设计监控界面实现参数设定、温度数据实时监控等功能。设计了单片机与LabVIEW软件之间的串口通信程序,实现了输入、输出数据的传输。通过综合实验系统设计,使学生得到控制系统设计和实验调试等综合能力的训练。A comprehensive experimental case of the automatic control system is presented,which is the design of the temperature control system based on LabVIEW and SCM.The hardware part of the experimental system is composed of the SCM,temperature sensor,D/A conversion module,voltage regulating module and electric oven.The interface circuit between the SCM and each module is designed.In the software part,LabVIEW software is used to realize the control algorithm,and the monitoring interface is designed to realize the functions of parameter setting,temperature data real-time monitoring,etc.The serial communication program between the SCM and LabVIEW software is designed to realize the transmission of input and output data.Through the design of this comprehensive experimental system,students can get the comprehensive ability training for the control system design,experiment debugging,etc.
上传时间： 2022-03-27
上传用户：qdxqdxqdxqdx
在传统智能小车驱动电路设计中,较多考虑使用直流电机还是步进电机,电机功率、能耗等性能参数。使用具有armCortexM4内核的STM32嵌入式平台控制四轮的4个直流电机。文章基于PWM技术及PID算法,对四轮进行精准地速度、转向及启停控制,实验表明此小车具有优越各种地形适应能力。In the traditional intelligent car drive circuit design,DC motor or stepping motor,motor power,energy consumption and other performance parameters are considered.The four DC motors with four wheels are controlled by STM32 embedded platform with arm Cortex M4 kernel.Based on the PWM technology and PID algorithm,the accurate ground speed,steering,and start-stop control of the four wheels are carried out.The experiment shows that the vehicle has the superior adaptability to all kinds of terrains.
上传时间： 2022-04-01
上传用户：ibeikeleilei
实验教学一直是工科教学中不可或缺的组成部分,对培养学生的动手能力,独立思考能力,创新思维与发散思维具有重要的作用。针对目前电路教学实验中电路仿真实验与实物电路实验各自独立,无法统一问题,提出将仿真电路实验与实物电路实验有机的结合同步操作,并使用Web发布实现远程实验操作。采用Multisim作为电路实验仿真平台,NI Eiviss II作为实物电路实验硬件平台,运用LabVIEW整合Multisim电路仿真实验与实物电路实验,实现仿真与实物实验有机结合,两种实验可同步进行。学生在仿真实验中先可探索实验,然后做实物实验。同时运用LabVIEW开发出实验过程人机交互操作接口界面,使用过程中效果良好。experimental teaching has always been an indispensable part of engineering education.And it always plays an important role in cultivating students'practical ability,independent thinking ability,innovative thinking and divergent thinking.But simulation experiment and physical experiment cannot be unified in the circuit teaching experiment at present.In order to solve this problem,this paper proposes to combine organically the simulation circuit experiment with physical circuit experiment,and synchronously operate them.This paper uses the WEB publishing to achieve remote experimental operation.Multisim is used as the circuit simulation platform,and NI Eiviss II is used as the physical circuit hardware platform.Multisim circuit simulation experiment and physical circuit experiment are implemented by LabVIEW to realize the combination of simulation experiment and physical experiment.Students do explore experiments in simulation experiment firstly,and then do physical experiment.And this paper uses LabVIEW to develop the experimental man-machine interface.
上传时间： 2022-04-04
上传用户：lijumiao
