多功能智能遙控窗簾系統(tǒng)廣泛地應(yīng)用于家居、辦公室等場(chǎng)合,同時(shí)也是智能家居的一部分。該設(shè)計(jì)主要利用STC89C52單片機(jī)核心電路、光敏電阻電路、步進(jìn)電機(jī)電路、溫濕度傳感器、紅外線(xiàn)控制電路、AD轉(zhuǎn)換電路、LCD1602液晶顯示屏等模塊完成精確控制窗簾的開(kāi)和關(guān)。multi-functional intelligent remote control curtain system is widely used in home,office and other occasions,and is also part of intelligent home.The design mainly uses STC89 C52 single-chip core circuit,photosensitive resistor circuit,stepping motor circuit,temperature and humidity sensor,infrared control circuit,AD conversion circuit,LCD1602 LCD display and other modules to achieve accurate control of the curtain opening and closing.
上傳時(shí)間： 2022-03-28
上傳用戶(hù)：
電學(xué)中的測(cè)量技術(shù)涉及范圍非常廣,電流測(cè)量在電學(xué)計(jì)量中占有非常重要的位置。如何精確地進(jìn)行電流測(cè)量是精密測(cè)量的一大難題。傳統(tǒng)的電流檢測(cè)電路多采用運(yùn)算放大芯片與片外電流檢測(cè)電路相結(jié)合的方式,電路集成度很低,需要較多的接口和資源才能完成對(duì)電路的檢測(cè)。本文把所有電路部分都集成在一塊芯片上,包括檢測(cè)電阻,運(yùn)算放大器電路及模擬轉(zhuǎn)數(shù)字轉(zhuǎn)換電路,從而在電路內(nèi)部可以進(jìn)行電流檢測(cè),使電路更好的集成化。前置電路使用二級(jí)共源共柵結(jié)構(gòu)的運(yùn)算放大器,減小溝道長(zhǎng)度調(diào)制效應(yīng)造成的電流誤差。10位SAR ADC中采用電容驅(qū)動(dòng)能力強(qiáng)的傳輸門(mén)保證了模數(shù)轉(zhuǎn)化器的有效精度。比較器模塊采用再生鎖存器與遲滯比較器作為基礎(chǔ)單元組合解決精密測(cè)量的問(wèn)題。本設(shè)計(jì)可以作為嵌入芯片內(nèi)的一小部分而檢測(cè)芯片中的微小電流1mA~100mA,工作電壓在1.8v左右,電流檢測(cè)精度預(yù)期達(dá)到10uA的需求。The measurement technology in electricity involves a wide range,and current measurement plays a very important position in electrical measurement.How to accurately measure current is a big problem in precision measurement. The traditional current detecting circuit adopts the combination of the operational amplifier chip and theoff-chip current detecting circuit, The circuit integration is very low, and more interfaces and resources are needed tocomplete the circuit detection.This topic integrates all the circuit parts into one chip, including detection resistance, operational amplifier circuit andanalog to digital conversion circuit. Highly integrated circuit makes the external resources on the chip more intensive,so that current detection can be carried out inside the circuit, so that the circuit can be better integrated. Thefront-end circuit of this project uses two-stage cascade operational amplifier and cascade tube to reduce the currenterror caused by channel length modulation effect. In 10-bit SAR ADC, the transmission gate with strong capacitivedriving ability ensures the effective accuracy of the analog-to-digital converter. Comparator module uses regenerativelatch and hysteresis comparator as basic unit to solve the difficult problem of precision measurement. This topic can beused as a small part of the embedded chip to detect the micro-current in the chip 1 mA~100 mA, the working voltageis about 1.8v, and the current detection accuracy is expected to reach the requirement of 10 uA.
標(biāo)簽： 電流檢測(cè) 電路 運(yùn)算放大器 adc
上傳時(shí)間： 2022-04-03
上傳用戶(hù)：
本文首次設(shè)計(jì)并驗(yàn)證了基于macom三合一芯片設(shè)計(jì)的光模塊電路,該電路旨在提供一種滿(mǎn)足SFF-8472中規(guī)定的數(shù)字診斷功能的低成本SFP+模塊。電路采用激光器驅(qū)動(dòng)、限幅放大器、控制器以及時(shí)鐘恢復(fù)單元集成的單芯片,在保證高精度數(shù)字診斷功能基礎(chǔ)上,實(shí)現(xiàn)了低成本高可靠的特點(diǎn)。該電路在光接收接口組件與激光器驅(qū)動(dòng)和限幅放大器單元的限幅放大器部分之間接入濾波器來(lái)提高模塊的靈敏度及信號(hào)質(zhì)量。在控制器單元的數(shù)字電位器的引腳上采用外加電阻的方式避免出現(xiàn)上電不發(fā)光的故障問(wèn)題。該研究結(jié)果為下一代SFP-DD光模塊設(shè)計(jì)與開(kāi)發(fā)工作,奠定了一定的理論與實(shí)踐基礎(chǔ)。This paper designs and validates the optical module circuit based on the MACOM Trinity chip for the first time.This circuit aims to provide a low-cost SFP module which meets the digital diagnosis function specified in SFF-8472.The circuit uses a single chip integrated with laser driver,limiting amplifier,controller and clock recovery unit.On the basis of ensuring high precision digital diagnosis function,it achieves the characteristics of low cost and high reliability.The circuit connects a filter between the optical receiving interface module and the limiting amplifier part of the laser driver and limiting amplifier unit to improve the sensitivity and signal quality of the module.The pin of the digital potentiometer in the controller unit is equipped with an external resistance to avoid the problem of power failure.The research results lay a theoretical and practical foundation for optical module design in high-speed data center.
上傳時(shí)間： 2022-04-03
上傳用戶(hù)：
實(shí)驗(yàn)教學(xué)一直是工科教學(xué)中不可或缺的組成部分,對(duì)培養(yǎng)學(xué)生的動(dòng)手能力,獨(dú)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(duì)目前電路教學(xué)實(shí)驗(yàn)中電路仿真實(shí)驗(yàn)與實(shí)物電路實(shí)驗(yàn)各自獨(dú)立,無(wú)法統(tǒng)一問(wèn)題,提出將仿真電路實(shí)驗(yàn)與實(shí)物電路實(shí)驗(yàn)有機(jī)的結(jié)合同步操作,并使用Web發(fā)布實(shí)現(xiàn)遠(yuǎn)程實(shí)驗(yàn)操作。采用Multisim作為電路實(shí)驗(yàn)仿真平臺(tái),NI Eiviss II作為實(shí)物電路實(shí)驗(yàn)硬件平臺(tái),運(yùn)用LabVIEW整合Multisim電路仿真實(shí)驗(yàn)與實(shí)物電路實(shí)驗(yàn),實(shí)現(xiàn)仿真與實(shí)物實(shí)驗(yàn)有機(jī)結(jié)合,兩種實(shí)驗(yàn)可同步進(jìn)行。學(xué)生在仿真實(shí)驗(yàn)中先可探索實(shí)驗(yàn),然后做實(shí)物實(shí)驗(yàn)。同時(shí)運(yùn)用LabVIEW開(kāi)發(fā)出實(shí)驗(yàn)過(guò)程人機(jī)交互操作接口界面,使用過(guò)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.
上傳時(shí)間： 2022-04-05
上傳用戶(hù)：
Mathematical modeling has become an important part of the research and devclopment work in engineering and scicnce. Retaining a competitive edge requiresa fast path between ideas and prototypes, and in this regard mathematical modeling and simulation provide a valuable shortcut for understanding both qualitative and quantitative aspects of scientific and engineering design. To assist you in gaining this edge, COMSOL Multiphysics offers state-of-the art performance, being built from the ground up with a Java3D interface and C/C++ solvers.The Acoustics Module is an optional package that extends the COMSOL Multiphysicsmodcling cnvironment with customized user interfaces and functionality optimizcd for the analysis of acoustics. Like all modules in the COMSOL family, it provides a brary of prewritten ready-to-run models that make it quicker and casier to analyze disciplinc-specific problcms.
上傳時(shí)間： 2022-06-19
上傳用戶(hù)：
PrefaceDuring the past years, there has been a quickly rising interest in radio access technologies for providingmobile as well as nomadic and fixed services for voice, video, and data. The difference indesign, implementation, and use between telecom and datacom technologies is also becoming moreblurred. One example is cellular technologies from the telecom world being used for broadband dataand wireless LAN from the datacom world being used for voice-over IP.Today, the most widespread radio access technology for mobile communication is digital cellular,with the number of users passing 5 billion by 2010, which is more than half of the world’s population.It has emerged from early deployments of an expensive voice service for a few car-borne users,to today’s widespread use of mobile-communication devices that provide a range of mobile servicesand often include camera, MP3 player, and PDA functions. With this widespread use and increasinginterest in mobile communication, a continuing evolution ahead is foreseen.This book describes LTE, developed in 3GPP (Third Generation Partnership Project) and providingtrue 4G broadband mobile access, starting from the first version in release 8 and through the continuingevolution to release 10, the latest version of LTE. Release 10, also known as LTE-Advanced,is of particular interest as it is the major technology approved by the ITU as fulfilling the IMTAdvancedrequirements. The description in this book is based on LTE release 10 and thus provides acomplete description of the LTE-Advanced radio access from the bottom up.Chapter 1 gives the background to LTE and its evolution, looking also at the different standardsbodies and organizations involved in the process of defining 4G. It also gives a discussion of the reasonsand driving forces behind the evolution.Chapters 2–6 provide a deeper insight into some of the technologies that are part of LTE and itsevolution. Because of its generic nature, these chapters can be used as a background not only for LTEas described in this book, but also for readers who want to understand the technology behind othersystems, such as WCDMA/HSPA, WiMAX, and CDMA2000.Chapters 7–17 constitute the main part of the book. As a start, an introductory technical overviewof LTE is given, where the most important technology components are introduced based onthe generic technologies described in previous chapters. The following chapters provide a detaileddescription of the protocol structure, the downlink and uplink transmission schemes, and the associatedmechanisms for scheduling, retransmission and interference handling. Broadcast operation andrelaying are also described. This is followed by a discussion of the spectrum flexibility and the associated
標(biāo)簽： 4g 移動(dòng)通信
上傳時(shí)間： 2022-07-08
上傳用戶(hù)：
VIP專(zhuān)區(qū)-嵌入式/單片機(jī)編程源碼精選合集系列（18）資源包含以下內(nèi)容：1. These patch files are supplied as part of ADS 1.2.1..2. 星期算法,即知道日期,即可知道該天是星期幾.3. AT45DB041的驅(qū)動(dòng).4. 模擬UART程序(C語(yǔ)言).5. 模擬SPI程序(C語(yǔ)言).6. MSP430時(shí)鐘程序( C語(yǔ)言示范程序).7. I2C及同步傳輸?shù)臄U(kuò)展技術(shù).8. 并行口仿真i2c總線(xiàn).9. Mega8完美下載 包含源程序.10. 用于iic的讀寫(xiě)。上面有例子可以參考.11. 免費(fèi)的AHDL模塊庫(kù),包括IIC控制器,DRAM控制器,UART等28個(gè)模塊,AHDL源代碼.12. FLASH存儲(chǔ)器件國(guó)際標(biāo)準(zhǔn).13. 變壓器概述-變壓器經(jīng)典文章（中文PDF）.14. 一個(gè)完整DVDROM代碼(使用日立PICKUP).15. 19264液晶顯示完整C程序.16. 44b0板上的usb固件及上位機(jī)程序.17. TI54X 擦除FLASH代碼.18. TI54X 寫(xiě)FLASH源碼.19. AVR 下載線(xiàn)源程序.20. AVR編程C原代碼.21. C嵌入式編程.22. 用于嵌入式系統(tǒng)的TCP/IP協(xié)議棧.23. 用于嵌入式系統(tǒng)的TCP/IP協(xié)議棧及若干服務(wù).24. WindowsCE上的一個(gè)畫(huà)板程序.25. WinCE上的聊天程序.26. 微軟提供的WinCE中幾個(gè)控件的例子代碼.27. 微軟提供的Flash驅(qū)動(dòng)程序.28. 觸摸屏驅(qū)動(dòng)的程序.29. PCI總線(xiàn)的驅(qū)動(dòng)程序.30. ISD1400語(yǔ)音電路.31. M-BUS總線(xiàn)中的模擬電路.32. MSP430與液晶顯示器的串行接口方案.33. PCB制造流程及說(shuō)明.34. RS RS-232 至RS RS-485 RS RS-422 智能轉(zhuǎn)換器.35. TKS 系列仿真器使用指南.36. 彩色液晶智能顯示器.37. 常用運(yùn)放電路集錦.38. 多功能平臺(tái)數(shù)據(jù)協(xié)議.39. 公交IC 電路圖.40. 國(guó)家標(biāo)準(zhǔn)——電力線(xiàn)載波系統(tǒng)設(shè)計(jì)導(dǎo)則.
標(biāo)簽： 制冷 設(shè)備技術(shù)
上傳時(shí)間： 2013-05-22
上傳用戶(hù)：eeworm
VIP專(zhuān)區(qū)-嵌入式/單片機(jī)編程源碼精選合集系列（132）資源包含以下內(nèi)容：1. siemens PLC Prodave 通訊測(cè)試.2. 嵌入式系統(tǒng)下IC卡讀寫(xiě)的源碼.3. 數(shù)字音樂(lè)盒的完整畢業(yè)論文（無(wú)意中發(fā)現(xiàn)的） 課程設(shè)計(jì)題目：數(shù)字音樂(lè)盒.4. 單片機(jī)程序 51頻率計(jì) 電子琴 電子鐘程序 按鍵顯示程序最終成功.5. C和C++嵌入式系統(tǒng)編程,一本很嵌入式編程很不錯(cuò)的書(shū)..6. 一本很好的介紹yaffs文件系統(tǒng)的書(shū)籍 一本很好的介紹yaffs文件系統(tǒng)的書(shū)籍.7. 一份不錯(cuò)的介紹linux 字符設(shè)備驅(qū)動(dòng)的文檔.8. 工程源文件.9. 用holtek3000開(kāi)發(fā)環(huán)境編寫(xiě)的單片機(jī)C語(yǔ)言鍵盤(pán)掃描程序．.10. 8255A芯片的中文資料（8255中文資料）.11. mmc_sd_memory_card_driver_sample_project_files spi接口的sd card driver 示例.12. 單片機(jī)驅(qū)動(dòng)PS2鍵盤(pán)的c程序 希望對(duì)大家有用.13. a voice guide client ,it is the second part of voice guide center.14. msc map program to control client of tools,use for map guide.15. C#開(kāi)發(fā)win ce代碼程序.16. 2個(gè)Ds18b20溫度顯示電路,12Mhz晶振.17. 5分頻cpld原理圖實(shí)現(xiàn).18. 可實(shí)現(xiàn)對(duì)ST公司的SPI flash的控制.19. VB實(shí)現(xiàn)的文字圖片原理,VB實(shí)現(xiàn)的文字圖片原理.20. 嵌入式C精華, 嵌入式C精華,嵌入式C精華.21. 一個(gè)簡(jiǎn)單的電梯控制系統(tǒng),主要實(shí)現(xiàn)一個(gè)八層樓的電梯控制..22. 這是自己做的一個(gè)gui 及供初學(xué)者參考 如有問(wèn)題可以一起討論 可發(fā)到我的郵箱里 完成的功能就是 對(duì)uicontrol的應(yīng)用.23. 觸摸屏校正算法,主流嵌入式設(shè)計(jì)都使用此算法,個(gè)人覺(jué)得經(jīng)典..24. 基于51單片機(jī)的源碼,內(nèi)有液晶顯示(IIC)接口,還實(shí)現(xiàn)串口和定時(shí)操作等功能..25. 鏈接器和加載器,這是一本全面介紹我們編寫(xiě)的程序是如何被鏈接的,個(gè)人覺(jué)得做嵌入式開(kāi)發(fā)的軟件工程師必備的一本書(shū)..26. 使用Embest IDE for ARM 開(kāi)發(fā)環(huán)境及ARM 軟件模擬器； 通過(guò)實(shí)驗(yàn)掌握簡(jiǎn)單ARM 匯編指令的使用方法。.27. AD7714是一款24位高速AD轉(zhuǎn)換芯片.28. Cortex-M3是首款基于ARMv7-M架構(gòu)的處理器.29. 剛剛學(xué)習(xí)ne2000驅(qū)動(dòng)開(kāi)發(fā).30. ATMEL的芯片資料pdf文檔.31. GPS衛(wèi)星定位模塊的驅(qū)動(dòng)程序.32. 還可以.33. 基于CAN總線(xiàn)的分布式三維步進(jìn)電機(jī)控制系統(tǒng).34. 自己做的交通燈~(yú)~~用c編寫(xiě)的.35. 基于PCI總線(xiàn)的高速數(shù)據(jù)傳輸.36. [轉(zhuǎn)載]嵌入到系統(tǒng)進(jìn)程中,檢查并報(bào)告主板型號(hào).37. Freescale_071112_1公司內(nèi)部的器件資料.38. 關(guān)于2410開(kāi)發(fā)板的u-boot的說(shuō)明.39. CX1-22R 可編程控制器(簡(jiǎn)稱(chēng) CX1)是 22 路 I/O 一體化小型可編程控制器（PLC）.40. PIC匯編各個(gè)時(shí)間延時(shí)小程序.
標(biāo)簽： SD卡
上傳時(shí)間： 2013-04-15
上傳用戶(hù)：eeworm
This software was done in part for a textbook on AI I ve written called _The Basis of AI_ (tentative title, subject to change but not if I get my way). For details see: http://www.mcs.com/~drt/basisofai.html
標(biāo)簽： tentative software textbook written
上傳時(shí)間： 2015-03-30
上傳用戶(hù)：cxl274287265
具體功能:This is the part-2 of the whole project. This package is used to create PKI
標(biāo)簽： This the package project
上傳時(shí)間： 2015-08-27
上傳用戶(hù)：腳趾頭
蟲(chóng)蟲(chóng)下載站版權(quán)所有 京ICP備2021023401號(hào)-1
