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  • 24位ADC在心電圖中的應用筆記

    Abstract: This application note describes the essential workings of an electrocardiogram (ECG). It discussesfactors that disrupt the ECG signals and make reliable, highly-accurate electrical characterization difficult. Theindustry-standard solution for ECG electrical characterization, which uses an analog front-end and ADCcombination, is explained. The article then introduces the MAX11040 simultaneous-sampling, sigma-deltaADC as a compelling, highly integrated solution that eliminates the need for the AFE, and saves both spaceand cost for the application.

    標簽: ADC 24位 心電圖 中的應用

    上傳時間: 2013-12-23

    上傳用戶:sssl

  • 基于C8051F020和Zigbee的汽車測試系統設計

    以C8051F020為核心處理器,設計無線傳感器網絡數據采集系統。系統采用SZ05-ADV型無線通訊模塊組建Zigbee無線網絡,結合嵌入式系統的軟硬件技術,完成終端節點的8路傳感器信號的數據采集。現場8路信號通過前端處理后,分別送入C8051F020的12位A/D轉換器進行轉換。經過精確處理、存儲后的現場數據,通過Zigbee無線網絡傳送到上位機,系統可達到汽車試驗中無線測試的目的。 Abstract:  This paper designs a wireless sensor network system for data acquisition with C8051F020 as core processors.The system used SZ05-ADV wireless communication module,set up a Zigbee wireless network, combined with hardware and software technologies of embedded systems,completed the end-node 8-locale sensor signal data acquisition.Eight locale signals were sent separately into the 12-bit ADC of C8051F020 for conversion through front treatment.After accurate processing and storage,the locale data was transmitted to the host computer through Zigbee wireless.The system achieves the purpose of wireless testing in vehicle trial.

    標簽: C8051F020 Zigbee 汽車測試 系統設計

    上傳時間: 2013-11-23

    上傳用戶:dsgkjgkjg

  • 基于AVR的新型防汽車追尾安全裝置設計

    針對目前汽車追尾事件頻發問題,提出一種防汽車車前和車后追尾的安全裝置設計。該設計以高性能、低功耗的8位AVR微處理器ATmega8L為核心,結合霍爾式車速傳感器、激光雷達測距裝置和MMA7260QT加速度傳感器,能夠兼顧車前和車后,摒棄以往設計中只考慮車前或車后單一性缺點,尤其適用于高速、夜晚或新手行車。 Abstract:  Aiming at the high frequency of vehicle rear-end collision,a safe device design of anti-vehicle rear-end collision is presented.In the design,the high-performance,low-power8-bit AVR microprocessor ATmega8L is utilized as a core combined with Hall-type speed sensor,laser-radar ranging devices and the acceleration sensor MMA7260QT.The design considers both the front and back of a car,and overcomes the drawbacks of former designs in which only the front or the back of the car is considered,so it is especially suitable for high-speed,night or the beginner’s driving.

    標簽: AVR 汽車追尾 裝置

    上傳時間: 2013-10-14

    上傳用戶:GavinNeko

  • AVR mega128學習板

    AVR mega128學習板 聯系  楊迪 15336417867  0531-55508458 QQ:1347978253  http://www.easyele.cn AVR mega128學習板是AVRVI設計生產的AVR學習開發生產工具,以Atmega128為核心,采用底板,核心板的組織形式,子板和母板組合,也可以分開。集成AVR JTAG ICE仿真器和STK500 ISP編程器,用戶只需要再擁有一臺計算機即可進行系統的學習。為了更好的支持客戶的學習和開發,AVR mega128學習板板通訊接口升級為USB接口,方便計算機沒有串口的朋友。貨號:EasyAVRM128SK-A  規格: 套  重量:300克 單價498/套。 AVR mega128學習板他還是一個強大的開發工具。通過它進行學習后,你會覺得畢業設計如此簡單,輕松應對電子設計大賽,機器人大賽,對電子產品的設計有進一步的認知,建立起學習ARM,DSP,FPGA的良好基礎。AVR mega128學習板這個性價比高的專業工具是你的不二選擇。購買本產品贈送LCD1602液晶一塊。AVR mega128學習板是仿真器,編程器,開發板,核心板四合一的集功能于一體的產品,并且可以分開獨立使用。 AVR mega128學習板于2008年開發,基于AVR中較高檔芯片ATmega128設計,采用子板和母版疊加的方式,集成仿真和下載功能,原串口版本得到廣大用戶的支持和認可,2009年底升級為USB版本,使用更方便,兼容開發型號:ATmega64,特別適合新手學習,工程師快速產品開發。 AVR mega128學習板的關鍵特點: 1.采用核心板和主板分離的形式,在系統的學習之后,可以把核心板直接用于產品中,快速搭建系統。 2.AVR mega128學習板上集成了AVR JTAG ICE仿真器和AVR ISP編程器。 您只需要再擁有一臺計算機,而不需要購買仿真器和編程器就可以學習開發了。 3.信號調理電路,輸入0~10V,軌至軌信號調理。 學習階段:AVR mega128學習板讓你熟悉AVR的各種資源的應用,板載的常用外設,可以讓你方便的進行各種學習實驗。板載編程器和仿真器,讓你無需擔心自己的接線是否正確,即插即用。開發階段:AVR mega128學習板的核心板可以用于產品核心,板子雖小,五臟俱全,最小系統板的基本電路,讓你得心應手,標準的插針,可以將核心板直接插在萬用板上使用,擴展方便。仿真器功能,讓你開發變得更加簡單,輕松找到程序中的各種問題,予以解決,加快開發。AVR mega128學習板的ISP 功能可以讓你禁用JTAG接口,節省IO,并且讓AD轉換更加準確。生產階段:編程器提供官方推薦的ISP在線下載方式,速度快,編程完成后不占用CPU的任何資源。 AVR mega128學習板是進入嵌入式開發領域的專業入門學習和開發工具,是學生,初學者,工程師的必備良弓。我們還為客戶提供可選配件18B20溫度傳感器 10元 1602液晶 20元 12864液晶 80元 7.5/12V電源 12元 mini128核心板 147元 mini64核心板 138元。歡迎有志之士咨詢選購。 想找一份好工作嗎? 你想成為一名電子設計工程師嗎? 你對電子設計有濃厚興趣,而沒有工具嗎? 看了很久的程序方面的書籍,卻沒有實踐的機會嗎? 需要開發產品,想快速入門? 想參加電子設計大賽,機器人大賽嗎?     這個性價比高的專業工具是你的不二選擇。

    標簽: mega AVR 128

    上傳時間: 2013-11-13

    上傳用戶:ljj722

  • JTAG仿真器 mega16開發板恩易

    JTAG仿真器 mega16開發板 聯系  楊迪 15336417867  0531-55508458 QQ:1347978253  http://www.easyele.cn 有了mega16開發板 JTAG仿真器就可以開始學習強大的AVR單片機,不用再單獨買編程器,仿真器。本產品是AVRVI設計生產的AVR學習開發生產工具,以Atmega16為核心,集成AVR JTAG ICE仿真器和STK500 ISP編程器,用戶只需要再擁有一臺計算機即可進行系統的學習。同時mega16開發板器 JTAG仿真器還提供精致的說明書,讓您事半功倍,深入了解單片機電路的設計,找到好工作沒問題,詳細介紹電路設計和如果學習開發等內容,即使不買板子也值得你收藏。mega16開發板 JTAG仿真器的貨號:EasyAVR-M16  規格: 套  重量:400克。單價298/套 mega16開發板 JTAG仿真器開發板板載資源列表(部分): 1.1路有源蜂鳴器,也可接無源蜂鳴器 2.實時鐘PCF8563 3.1IIC總線EEPROM AT24c01 4.1-wire單總線 5.晶振和復位電路 6.可選的有源晶振電路 7.AD電壓調整電位器 8.電位器參考電壓和待測電壓調整 9.mega16開發板 JTAG仿真器擁有4個8位撥碼開關 0.32Pin MCU外接端子 所有引腳標注 11.12864液晶接口 12.1602液晶接口 13.mega16開發板 JTAG仿真器有標準KF396尼龍接線端子 14.透明防滑硅膠腳墊 mega16開發板 JTAG仿真器的三個關鍵特點:開發板集成常用資源:LED、按鍵、七段數碼管、RS232、LCD接口等;開發板上集成了AVR JTAG ICE仿真器和AVR ISP編程器;信號調理電路,輸入0~10V,軌至軌信號調理。購買mega16開發板 JTAG仿真器是,我們會以優惠的價格提供給客戶一些可選配件:18B20 10元;1602字符液晶  20元;12864 圖形液晶帶字庫 80元;串口通訊線纜 5元;有源晶振   5元;杜邦頭連線10條 5元,以上全配只需要加100元,如需要5V 小型步進電機另加20元。歡迎大家咨詢選購。 開發板系列我公司還出售: mega128四合一開發板    498/套 ATMEL 原裝 ATSTK500開發板   750/塊 ATmega8 開發板 學習板 Mini Mega8 核心板    87/塊 ATmega48 開發板 學習板 Mini Mega48 核心板  84/塊 ATMega88 開發板 學習板 mini mega88 核心板  91/塊 ATmega16 開發板 AVR學習板 Mega16 核心板    106/塊 ATmega32 開發板 學習板 Mini M32 核心板     116/塊 ATmega128 開發板 學習板 Mini M128 核心板   147/塊 ATmega64 開發板 學習板 Mini M64 核心板    144/塊

    標簽: JTAG mega 16 仿真器

    上傳時間: 2013-10-19

    上傳用戶:tou15837271233

  • 移動無線終端導航AFE和數據轉換器

    Abstract: High-speed and low-speed data converters serve critical functions in modern broadband mobile radios. This application note outlines how todetermine high-speed data converter performance requirements in baseband sampling radio architectures. Also, system partition strategies andadvantages are outlined when considering a high-speed analog front-end (AFE) solution.

    標簽: AFE 移動 無線終端 導航

    上傳時間: 2013-11-02

    上傳用戶:jjj0202

  • 基于ZigBee技術的無線智能家用燃氣報警系統

    在研究傳統家用燃氣報警器的基礎上,以ZigBee協議為平臺,構建mesh網狀網絡實現網絡化的智能語音報警系統。由于傳感器本身的溫度和實際環境溫度的影響,傳感器標定后采用軟件補償方法。為了減少系統費用,前端節點采用半功能節點設備,路由器和協調器采用全功能節點設備,構建mesh網絡所形成的家庭內部報警系統,通過通用的電話接口連接到外部的公用電話網絡,啟動語音模塊進行報警。實驗結果表明,在2.4 GHz頻率下傳輸,有墻等障礙物的情況下,節點的傳輸距離大約為35 m,能夠滿足家庭需要,且系統工作穩定,但在功耗方面仍需進一步改善。 Abstract:  On the basis of studying traditional household gas alarm system, this paper proposed the platform for the ZigBee protocol,and constructed mesh network to achieve network-based intelligent voice alarm system. Because of the sensor temperature and the actual environment temperature, this system design used software compensation after calibrating sensor. In order to reduce system cost, semi-functional node devices were used as front-end node, however, full-function devices were used as routers and coordinator,constructed alarm system within the family by building mesh network,connected to the external public telephone network through the common telephone interface, started the voice alarm module. The results indicate that nodes transmit about 35m in the distance in case of walls and other obstacles by 2.4GHz frequency transmission, this is able to meet family needs and work steadily, but still needs further improvement in power consumption.

    標簽: ZigBee 無線智能 報警系統

    上傳時間: 2013-10-30

    上傳用戶:swaylong

  • 賽靈思電機控制開發套件簡介(英文版)

      The power of programmability gives industrial automation designers a highly efficient, cost-effective alternative to traditional motor control units (MCUs)。 The parallel-processing power, fast computational speeds, and connectivity versatility of Xilinx® FPGAs can accelerate the implementation of advanced motor control algorithms such as Field Oriented Control (FOC)。   Additionally, Xilinx devices lower costs with greater on-chip integration of system components and shorten latencies with high-performance digital signal processing (DSP) that can tackle compute-intensive functions such as PID Controller, Clark/Park transforms, and Space Vector PWM.   The Xilinx Spartan®-6 FPGA Motor Control Development Kit gives designers an ideal starting point for evaluating time-saving, proven, motor-control reference designs. The kit also shortens the process of developing custom control capabilities, with integrated peripheral functions (Ethernet, PowerLink, and PCI® Express), a motor-control FPGA mezzanine card (FMC) with built-in Texas Instruments motor drivers and high-precision Delta-Sigma modulators, and prototyping support for evaluating alternative front-end circuitry.

    標簽: 賽靈思 電機控制 開發套件 英文

    上傳時間: 2013-10-28

    上傳用戶:wujijunshi

  • RemoteWAP is a Remote Administration Tool for any Operating System that can support the Java Virtual

    RemoteWAP is a Remote Administration Tool for any Operating System that can support the Java Virtual Machine. It has been designed for anyone who wishes to have complete control of there OS anywhere by using a WAP enabled Mobile Phone. RemoteWAP is developed using Java and WML for the client mobile phone front-end pages. RemoteWAP has a Java Swing-GUI to allow for easy control. Future releases will have a Command Line Interface for quick use

    標簽: Administration RemoteWAP Operating Virtual

    上傳時間: 2015-02-01

    上傳用戶:exxxds

  • Copyright© 2004 Sergiu Dumitriu, Marta Gî rdea, Că tă lin Hriţ cu Permission is

    Copyright© 2004 Sergiu Dumitriu, Marta Gî rdea, Că tă lin Hriţ cu Permission is granted to copy, distribute and/or modify this document under the terms of the GNU Free Documentation License, Version 1.2 or any later version published by the Free Software Foundation with no Invariant Sections, no front-Cover Texts, and no Back-Cover Texts. A copy of the license is included in the section entitled "GNU Free Documentation License" All brand names, product names, or trademarks belong to their respective holders.

    標簽: Permission Copyright 259 Dumitriu

    上傳時間: 2015-04-02

    上傳用戶:jackgao

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