【文章內(nèi)容簡介】 跡。，在戶外光線充足情況下，電機(jī)正轉(zhuǎn)至此狀態(tài)，我們定義為白天窗簾打開。 白天窗簾狀態(tài)在此情況下，按下定時(shí)鍵之后，光控部分就失效并且轉(zhuǎn)為人工操作模式，此時(shí)可以定時(shí)窗簾關(guān)閉。 定時(shí)關(guān)閉狀態(tài)此時(shí)按下復(fù)位鍵后，恢復(fù)原來狀態(tài)后，窗簾再次進(jìn)入光控狀態(tài)下。當(dāng)用手按住光敏二極管時(shí)候，由于光線不足，電機(jī)反轉(zhuǎn)，此時(shí)窗簾關(guān)閉。 定時(shí)關(guān)閉此時(shí)在關(guān)閉狀態(tài)下，按下定時(shí)鍵之后，光控失效，將窗簾定時(shí)2秒鐘后打開。 定時(shí)打開總 結(jié)經(jīng)過這段時(shí)間的資料查找和設(shè)計(jì)，最終完成了畢業(yè)設(shè)計(jì)的任務(wù)。本文設(shè)計(jì)了電動(dòng)窗簾控制器的智能項(xiàng)目，系統(tǒng)的介紹了電動(dòng)窗簾控制器的硬件電路設(shè)計(jì)到軟件設(shè)計(jì)的一系列步驟。本設(shè)計(jì)采用光敏二極管作為檢測元件，89C51單片機(jī)作為控制芯片，步進(jìn)電機(jī)作為執(zhí)行元件，結(jié)合鍵盤和顯示器件，實(shí)現(xiàn)了電動(dòng)窗簾控制器的多項(xiàng)智能項(xiàng)目。從整體設(shè)計(jì)來看，使用了熟悉的89C51單片機(jī)，從而對(duì)控制芯片的功能了如指掌，熟悉的控制芯片設(shè)計(jì)起來也是得心應(yīng)手。所用芯片簡單實(shí)用，減少了開發(fā)和硬件開銷。傳感器部分使用光敏二極管，可以持續(xù)性的檢測外界光強(qiáng)變化，通過電橋電路后的信號(hào)進(jìn)入比較器，可以得出一個(gè)信號(hào)，通過單片機(jī)的脈沖信號(hào)進(jìn)而控制步進(jìn)電機(jī)的運(yùn)行。本設(shè)計(jì)的步進(jìn)電機(jī)可以很好的執(zhí)行單片機(jī)的命令。步進(jìn)電機(jī)為一種數(shù)字伺服執(zhí)行元件，具有結(jié)構(gòu)簡單、運(yùn)行可靠、控制方便、控制性能好等優(yōu)點(diǎn)。使得窗簾的開關(guān)更加的準(zhǔn)確，穩(wěn)定。設(shè)計(jì)的時(shí)鐘電路配合單片機(jī)的定時(shí)功能，加上光電傳感器的檢測光強(qiáng)很好的解決了自動(dòng)控制這個(gè)問題。同時(shí)，智能項(xiàng)目是一項(xiàng)比較有價(jià)值的項(xiàng)目，智能窗簾也有許多問題和功能可以進(jìn)一步研究，如解決光電開關(guān)的滯回特性，可以使用施密特電路來完成。其次，顯示功能中還沒有顯示電動(dòng)窗簾控制器的工作方式。一個(gè)完整的畢業(yè)設(shè)計(jì)過程，使我掌握了單片機(jī)系統(tǒng)和電子操作軟件等方面的知識(shí)，尤其在動(dòng)手能力方面有很大的提升，也給今后更成功、完善的設(shè)計(jì)打下堅(jiān)實(shí)的基礎(chǔ)。致 謝畢業(yè)設(shè)計(jì)即將完成，在這里要衷心感謝所有在設(shè)計(jì)過程中給我提供幫助的老師和同學(xué)，沒有他們的幫助，畢業(yè)設(shè)計(jì)不可能這么順利的完成。首先要感謝的是指導(dǎo)老師耿欣老師。在學(xué)校畢業(yè)設(shè)計(jì)的時(shí)間里，老師給我提供了很大的幫助。在完成畢業(yè)設(shè)計(jì)的過程中，還指出了很多錯(cuò)誤，提出了很多寶貴意見。每次在查看我的進(jìn)度的同時(shí)都是認(rèn)真查看我的設(shè)計(jì)，對(duì)于設(shè)計(jì)中存在的問題也是耐心的回答和討論。畢業(yè)設(shè)計(jì)的初稿也是仔細(xì)審閱，細(xì)節(jié)部分的問題也被她看出。在此對(duì)于耿欣老師一絲不茍，兢兢業(yè)業(yè)的精神表示衷心的敬佩與感謝。同時(shí)，我要向在這次畢業(yè)設(shè)計(jì)中給我提供幫助和提出意見的同學(xué)表示感謝，在他們的幫助和建議下，我的畢業(yè)設(shè)計(jì)才得以更加順利的完成。參考文獻(xiàn)[1] 李廣第. 單片機(jī)基礎(chǔ). 北京：北京航空航天大學(xué)出版社，2001[2] 周航慈，朱兆優(yōu). 智能儀器原理與設(shè)計(jì). 北京：北京航空航天大學(xué)出版社，2005[3] 劉守義. 單片機(jī)應(yīng)用技術(shù). 陜西：西安電子科技大學(xué)出版社，2007[4] 胡漢才. 單片機(jī)原理及其接口技術(shù). 北京：清華大學(xué)出版社，2003[5] 王曉明. 電動(dòng)機(jī)的單片機(jī)控制. 北京：北京航空航天大學(xué)出版社，2002[6] 姚福安．電子電路設(shè)計(jì)與實(shí)踐．濟(jì)南：山東科學(xué)技術(shù)出版社，2005．[7] 張培志,陸偉. ，2008[8] ::航空工業(yè)出版社,1998附錄A 附錄A 英文文獻(xiàn)The General Situation of AT89C511 The application of AT89C51Microcontrollers are used in a multitude of mercial applications such as modems, motorcontrol systems, air conditioner control systems, automotive engine and among others. The high processing speed and enhanced peripheral set of these microcontrollers make them suitable for such highspeed eventbased applications. However, these critical application domains also require that these microcontrollers are highly reliable. The high reliability and low market risks can be ensured by a robust testing process and a proper tools environment for the validation of these microcontrollers both at the ponent and at the system level. Intel Platform Engineering department developed an objectoriented multithreaded test environment for the validation of its AT89C51 automotive microcontrollers. The goals of this environment was not only to provide a robust testing environment for the AT89C51 automotive microcontrollers, but to develop an environment which can be easily extended and reused for the validation of several other future microcontrollers. The environment was developed in conjunction with Microsoft Foundation Classes (AT89C51). The paper describes the design and mechanism of this test environment, its interactions with various hardware/software environmental ponents, and how to use AT89C51. IntroductionThe 8bit AT89C51 CHMOS microcontrollers are designed to handle highspeed calculations and fast input/output operations. MCS 51 microcontrollers are typically used for highspeed event control systems. Commercial applications include modems, motorcontrol systems, printers, photocopiers, air conditioner control systems, disk drives, and medical instruments. The automotive industry use MCS 51 microcontrollers in enginecontrol systems, airbags, suspension systems, and antilock braking systems (ABS). The AT89C51 is especially well suited to applications that benefit from its processing speed and enhanced onchip peripheral functions set, such as automotive powertrain control, vehicle dynamic suspension, antilock braking, and stability control applications. Because of these critical applications, the market requires a reliable costeffective controller with a low interrupt latency response, ability to service the high number of time and event driven integrated peripherals needed in real time applications, and a CPU with above average processing power in a single package. The financial and legal risk of having devices that operate unpredictably is very high. Once in the market, particularly in mission critical applications such as an autopilot or antilock braking system, mistakes are financially prohibitive. Redesign costs can run as high as a $500K, much more if the fix means 2 back annotating it across a product family that share the same core and/or peripheral design flaw. In addition, field replacements of ponents are extremely expensive, as the devices are typically sealed in modules with a total value several times that of the ponent. To mitigate these problems, it is essential that prehensive testing of the controllers be carried out at both the ponent level and system level under worst case environmental and voltage conditions. This plete and thorough validation necessitates not only a welldefined process but also a proper environment and tools to facilitate and execute the mission successfully. Intel Chandler Platform Engineering group provides post silicon system validation (SV) of various microcontrollers and processors. The system validation process can be broken into three major parts. The type of the device and its application requirements determine which types of testing are performed on the device. The AT89C51 provides the following standard features: 4Kbytes of flash, 128 bytes of RAM, 32 I/O lines, two 16bittimer/counters, five vector twolevel interrupt architecture, a full duple ser ail port, onchip oscillator and clock circuitry. In addition, the AT89C51 is designed with static logic for operation down to zero frequency and supports two software selectable power saving modes. The Idle Mode stops the CPU while allowing the RAM, timer/counters, serial port and interrupt sys tem to continue functioning. The Powerdown Mode saves the RAM contents but freezes the oscil –lator disabling all other chip functions until the next hardware reset. Block Diagram13Pin DescriptionVCC Supply vol