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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.
標(biāo)簽：
implementation
Programmable
processor
embedded
上傳時間：
2014-01-02
上傳用戶：dyctj
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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
標(biāo)簽：
functionality
Rootless
includes
release
上傳時間：
2014-01-03
上傳用戶：gxmm
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用三點法實現(xiàn)機(jī)器人三維位置測量的研究摘 要 ：提 出 了一 種 微 小 爬 壁 機(jī) 器 人 三 維 位 置 測 量 的新
方 法 。筆 者 通 過 深 入 分 析 研 究各 種 位 置 測 控 方 法 與 系
統(tǒng) ，提 出采 用單 目視 覺方 法 中的 聚 焦法 ，以 CCD作 為
傳 感 器 ，用 三 點 法 實現(xiàn) 對 機(jī) 器 人 的 三 維 位 置 測 量 。 驗
證性 實驗 結(jié)果表 明 ，本研 究提 出的測 量原 理和 系統(tǒng)是
正 確 可行 的 。
關(guān)鍵詞 ：機(jī) 器人 ；位置 測量 ；CCD傳 感 器 ；單 目視 覺 ；攝
像 機(jī) 標(biāo) 定
中 圖分 類 號 ：TP242．6
文 獻(xiàn) 標(biāo) 識 碼 ：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
位置測量技 術(shù)是智 能機(jī) 器人 的關(guān)鍵 技術(shù) ，是各 種
機(jī)器人控 制系統(tǒng) 中極 為重 要 的環(huán)節(jié) ，也 是 國內(nèi)外研 究
的熱點所 在。
按 照測試 系統(tǒng) 與被 測機(jī) 器 人 的關(guān) 系 ，可 以將位 置
測量技術(shù) 分為接觸 式和非接觸式 兩大類 。接觸 式測量
系統(tǒng) 由于在測 量過程 中或多或少地 對機(jī)器人施 加 了載
荷 ，因而僅適用于靜 態(tài) 位置測 量 。而動 態(tài) 位 置測量 系
統(tǒng) 主要分 5類 ：①激光跟蹤 系統(tǒng) ；@ CCD交 互測量
收 稿 日期 ：2001—07—03
基 金項 目：國家 863高科技 研 究 資助 項 目(9804-06)；教 育 部 高
等 學(xué)校 骨干教 師 資助 計 3t,j項 目
作者 簡 介 ：張 智海 (1973一 )，男 ，工 學(xué)碩 士 ，主 要 研 究 方 向 為 智
能 機(jī) 器人 測 控 技 術(shù) 。
系統(tǒng) ；③ 超聲波 測量 系統(tǒng) ；④ PSD(positionsensitivede—
vice)位 置 測 量 系統(tǒng) ；⑤ 帶 有 接 近覺 傳 感 器 的 測量 系
統(tǒng) 。位置測量 還可 以從另一個分類 角度劃分為主動式
測量和被動 式測 量 。主動式測 量主要可 以分為結(jié)
構(gòu)光方法和激光 自動聚焦法兩類 。被 動式測量 主要 可
以分為雙 目視 覺 、三 目視覺 、單 目視覺 等方法 。
對 比以上各種方法 的 優(yōu)缺 點 ，針對 筆者 研制 的微
小爬壁機(jī)器人 的空 間三 維位 置 測量 的要 求 ，測量 系統(tǒng)
必須滿足尺 寸小 、分 辨率 高 、穩(wěn)定 性 和可 靠性 好 、時 間
響應(yīng)快等特 點 ，提 出了采用 單 目視覺方法 中的聚焦法 ，
選用 CCD作 為傳感器 ，用 三點法實現(xiàn)對機(jī)器人 的三維
位置測量 ，并用 Matlab和 V
標(biāo)簽：
機(jī)器人
上傳時間：
2022-02-12
上傳用戶：
-
高清電子書-C++ Primer Plus, 第6版英文版 1438頁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
標(biāo)簽：
C++
上傳時間：
2022-02-19
上傳用戶：trh505
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基于FPGA設(shè)計的相關(guān)論文資料大全 84篇用FPGA實現(xiàn)FFT的研究
劉朝暉 韓月秋
摘 要 目的 針對高速數(shù)字信號處理的要求，給出了用現(xiàn)場可編程門陣列(FPGA)實現(xiàn)的
快速傅里葉變換(FFT)方案.方法 算法為按時間抽取的基4算法，采用遞歸結(jié)構(gòu)的塊浮點運
算方案，蝶算過程只擴(kuò)展兩個符號位以適應(yīng)雷達(dá)信號處理的特點，乘法器由陣列乘法器實
現(xiàn).結(jié)果 采用流水方式保證系統(tǒng)的速度，使取數(shù)據(jù)、計算旋轉(zhuǎn)因子、復(fù)乘、DFT等操作協(xié)
調(diào)一致，在計算、通信和存儲間取得平衡，避免了瓶頸的出現(xiàn).結(jié)論 實驗表明，用FPGA
實現(xiàn)高速數(shù)字信號處理的算法是一個可行的方案.
關(guān)鍵詞 離散傅里葉變換； 快速傅里葉變換； 塊浮點運算； 可編程門陣列
分類號 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
標(biāo)簽：
fpga
上傳時間：
2022-03-23
上傳用戶：
-
針對嵌入式產(chǎn)品程序更新問題,提出了一種基于IAP技術(shù)的STM32單片機(jī)在線固件升級方案,設(shè)計了STM32單片機(jī)最小系統(tǒng)硬件電路和USB轉(zhuǎn)串口通信電路,并給出了Bootloader程序、APP程序、PC上機(jī)程序的實現(xiàn)流程.實驗結(jié)果表明,該方案具有簡單實用、穩(wěn)定性高、維護(hù)成本低和設(shè)備使用效率高的特點,適用于嵌入式產(chǎn)品升級.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.
標(biāo)簽：
iap
stm32
單片機(jī)
上傳時間：
2022-03-25
上傳用戶：
-
設(shè)計了農(nóng)業(yè)溫濕度智能控制系統(tǒng),該系統(tǒng)采用DHT11溫濕度傳感器作為溫濕度采集模塊,單片機(jī)選用AT89C52代替并調(diào)用Virtual terminal模擬串口通信,LCD1604液晶顯示器實時顯示溫濕度,實現(xiàn)了溫濕度的測量、顯示,可自動控制加熱、降溫、加濕、通風(fēng),實現(xiàn)溫濕度控制以及超限報警處理,并利用Proteus與Keil進(jìn)行實際電路的仿真。試驗表明,該系統(tǒng)實現(xiàn)了可靠的溫濕度監(jiān)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.
標(biāo)簽：
at89c52
溫濕度智能控制系統(tǒng)
上傳時間：
2022-03-26
上傳用戶：aben
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設(shè)計了自動控制系統(tǒng)綜合實驗案例“基于LabVIEW和單片機(jī)的溫度控制系統(tǒng)設(shè)計”。實驗系統(tǒng)硬件部分由單片機(jī)、溫度傳感器、D/A轉(zhuǎn)換模塊、調(diào)壓模塊和電烤箱組成,設(shè)計了單片機(jī)與各個模塊之間的接口電路。軟件部分采用LabVIEW軟件實現(xiàn)控制算法,并設(shè)計監(jiān)控界面實現(xiàn)參數(shù)設(shè)定、溫度數(shù)據(jù)實時監(jiān)控等功能。設(shè)計了單片機(jī)與LabVIEW軟件之間的串口通信程序,實現(xiàn)了輸入、輸出數(shù)據(jù)的傳輸。通過綜合實驗系統(tǒng)設(shè)計,使學(xué)生得到控制系統(tǒng)設(shè)計和實驗調(diào)試等綜合能力的訓(xùn)練。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.
標(biāo)簽：
labview
單片機(jī)
自動控制系統(tǒng)
上傳時間：
2022-03-27
上傳用戶：qdxqdxqdxqdx
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在傳統(tǒng)智能小車驅(qū)動電路設(shè)計中,較多考慮使用直流電機(jī)還是步進(jìn)電機(jī),電機(jī)功率、能耗等性能參數(shù)。使用具有armCortexM4內(nèi)核的STM32嵌入式平臺控制四輪的4個直流電機(jī)。文章基于PWM技術(shù)及PID算法,對四輪進(jìn)行精準(zhǔn)地速度、轉(zhuǎn)向及啟停控制,實驗表明此小車具有優(yōu)越各種地形適應(yīng)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.
標(biāo)簽：
stm32
智能小車
控制系統(tǒng)
上傳時間：
2022-04-02
上傳用戶：
-
實驗教學(xué)一直是工科教學(xué)中不可或缺的組成部分,對培養(yǎng)學(xué)生的動手能力,獨立思考能力,創(chuàng)新思維與發(fā)散思維具有重要的作用。針對目前電路教學(xué)實驗中電路仿真實驗與實物電路實驗各自獨立,無法統(tǒng)一問題,提出將仿真電路實驗與實物電路實驗有機(jī)的結(jié)合同步操作,并使用Web發(fā)布實現(xiàn)遠(yuǎn)程實驗操作。采用Multisim作為電路實驗仿真平臺,NI Eiviss II作為實物電路實驗硬件平臺,運用LabVIEW整合Multisim電路仿真實驗與實物電路實驗,實現(xiàn)仿真與實物實驗有機(jī)結(jié)合,兩種實驗可同步進(jìn)行。學(xué)生在仿真實驗中先可探索實驗,然后做實物實驗。同時運用LabVIEW開發(fā)出實驗過程人機(jī)交互操作接口界面,使用過程中效果良好。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.
標(biāo)簽：
multisim
labview
上傳時間：
2022-04-05
上傳用戶：
