【正文】 s time for the wild fruits to ripe. The picturesque Arxan in Autumn is indeed a fairyland only exists in a dream that satisfies all your fantasies. If it rains heavily on Saturday night, some elderly Chinese will say it is because Zhinu, or the Weaving Maid, is crying on the day she met her husband Niulang, or the Cowherd, on the Milky Way. Most Chinese remember being told this romantic tragedy when they were children on Qixi, or the Seventh Night Festival, which falls on the seventh day of the seventh lunar month, which is usually in early August. This year it falls on Saturday, August 2. Folklore Story As the story goes, once there was a cowherd, Niulang, who lived with his elder brother and sisterinlaw. But she disliked and abused him, and the boy was forced to leave home with only an old cow for pany. The cow, however, was a former god who had violated imperial rules and was sent to earth in bovine form. One day the cow led Niulang to a lake where fairies took a bath on earth. Among them was Zhinu, the most beautiful fairy and a skilled seamstress. The two fell in love at first sight and were soon married. They had a son and daughter and their happy life was held up as an example for hundreds of years in China. Yet in the eyes of the Jade Emperor, the Supreme Deity in Taoism, marriage between a mortal and fairy was strictly forbidden. He ordered the heaven troop to catch Zhinu back. Niulang grew desperate when he discovered Zhinu had been taken b。 ll wait in the line for one hour to get a ticket, and another two hours at the site, to only see a tiny bit of the place due to the crowds. Last year, 428 million tourists traveled in China over the weeklong holiday in October. Traveling during this period is a matter that needs thorough preparation. If you are short on time to plan the uping Golden Week it may not be a bad idea to avoid some of the most crowded places for now. There is always a place so fascinating that everyone yearns for. Arxan is a place like this. The beauty of Arxan is everlasting regardless of the changing of four seasons. Bestowed by nature, its spectacular seasonal landscape and mountains are just beyond word. Arxan is a crucial destination for the remended travelling route, China Inner Mongolia Arxan — Hailar — Manzhouli. It is also the joint of the four prairies across the SinoMongolian border, where people gravitate towards the exotic atmosphere mixed with Chinese, Russian, and Mongolia elements. As a historic site for the Yitian Battle, Arxan still embodies the spirit of Genghis Khan. Walking into Arxan, you will be amazed by a kaleidoscope of geous colors all the year round the Spring azaleas blooming red in the snow, the Summer sea wavering blue in the breeze, the Autumn leaves painted in yellow covering volcanic traces, and the Winter woods shining white on the vast alpine snowscape. Hinggan League Arxan city is situated in the far eastern area of Inner Mongolia Autonomous Region. Its full name Haren Arxan means hot holy water in the Mongolian language. Arxan is a tourism city in the northern frontier with a blend of large forest, grand prairies, vast snowfield, heaven lake cluster, thermium, as well as volcanic cluster. It is a rare and unique ecotourism base filled with healthy sunshine, clean air and unspoiled green. Nestled close to the country39。I39。為此，我向熱 心幫助過(guò)我的所有老師和同學(xué)表示由衷的感謝 ! 特別感謝我的師兄以及師姐對(duì)我的學(xué)習(xí)和生活所提供的大力支持和關(guān)心 !還要感謝一直關(guān)心幫助我成長(zhǎng)的室友！ 在我即將完成學(xué)業(yè)之際，我深深地感謝我的家人給予我的全力支持！ 最后，衷心地感謝在百忙之中評(píng)閱論文和參加答辯的各位專(zhuān)家、教授 ! 參考文獻(xiàn) [1].張毅剛 .彭喜源，譚曉鈞，曲春波 .MCS51 單片機(jī)應(yīng)用設(shè)計(jì)，哈爾濱工業(yè)大學(xué)出版社 [2].周明珠 .王煒，王福源， 無(wú)觸點(diǎn)開(kāi)關(guān)在控制中的應(yīng)用，現(xiàn)代電子技術(shù) .2021 [3].俞海珍 .李憲章，馮浩，熱釋電紅外傳感器及其應(yīng)用，電子照明技術(shù) [4].趙海蘭 .，趙樣 .實(shí)時(shí)時(shí)鐘電路 DS1302的原理及應(yīng)用 .電子元器件應(yīng)用， 2021 [5].胡又農(nóng)等，可編程看門(mén)狗監(jiān)控 EEPROMX5045及其在 8051系統(tǒng)中的應(yīng)用，電子技術(shù)應(yīng)用 .1998， ， 1819 [6].瞿貴榮 .熱釋電紅外傳感器的結(jié)構(gòu)原理及特性，家庭電子愛(ài)好者， [7].樊貴卿，李慶武，靳建華，串行實(shí)時(shí)時(shí)鐘芯片 DS 1302 程序設(shè)計(jì)中的問(wèn)題與對(duì)策，電子 技術(shù)應(yīng)用 [8].冀蘭風(fēng) .芯片 X5045在智能化互感器檢驗(yàn)儀中的應(yīng)用，電子技術(shù)， 1998 [9].劉大茂 .嚴(yán)飛 .單片機(jī)應(yīng)用系統(tǒng)監(jiān)控主程序的設(shè)計(jì)方法 .福州大學(xué)學(xué)報(bào)， 1998 附錄一 部分元器件特性介紹 一、單片機(jī) AT89S52 AT89 系列單片機(jī)是由美國(guó) ATMEL 公司將閃速存儲(chǔ)器與 MCS51 控制器相 結(jié)合開(kāi)發(fā) 生產(chǎn)的一種新型 8 位單片機(jī)，它不但具有一般 MCS51 單片機(jī)的所有特性，而且還擁 有一些獨(dú)特的優(yōu)點(diǎn)，使 8 位單片機(jī)更具生命力。徐艷輝老老師以其淵博的學(xué)識(shí)、嚴(yán)謹(jǐn)?shù)闹螌W(xué)態(tài)度、求實(shí)的工作作風(fēng)和敏捷的思維給我留下了深刻的印象，我將終生難忘。 初步試驗(yàn)證明，本系統(tǒng)適用性較好，可以應(yīng)用于教室、樓道和辦公室中。 本系統(tǒng)中，人體傳感器采集的信號(hào)與環(huán)境光采集的信號(hào)相互間有著密切聯(lián)系。為防止這種現(xiàn)象發(fā)生，使系統(tǒng)更加可靠，最好采用多個(gè)人體傳感器。 展望 由于教室大小面積各不相同、教室燈光數(shù)量不一，教室內(nèi)部安裝智能控制裝備的數(shù)量也會(huì)有所不同，特別是人體傳感器使用的數(shù)量受面積的影響更大，一套教室燈光控制系統(tǒng)的應(yīng)用也只是在有限的范圍內(nèi)。軟件設(shè)計(jì)上采用多任務(wù)形式對(duì)信號(hào)的采集、處理，達(dá)到最終控制燈光的目的。系統(tǒng)的硬件及軟件設(shè)計(jì)，經(jīng)實(shí)驗(yàn)初步證實(shí)了系統(tǒng)具有很好的穩(wěn)定性，提高了 電能的利用率。 第六章 總結(jié)與展望 總結(jié) 該教室燈光系統(tǒng)的控制是以 AT89S51 單片機(jī)芯片為核心，通過(guò)相關(guān)電路的驅(qū)動(dòng)，完成對(duì)系統(tǒng)設(shè)備 (電燈 )的控制，采用一個(gè)二極管閃爍顯示整個(gè)系統(tǒng)的工作狀態(tài)，實(shí)現(xiàn)了對(duì)教室燈光的自動(dòng)開(kāi)燈、關(guān)燈控制。 分析解決：硬件時(shí)鐘顯示的時(shí)間不正常。繼電器驅(qū)動(dòng)電路中還需注意的是要與繼電器線圈并聯(lián)一個(gè)續(xù)流二極管，增加對(duì)驅(qū)動(dòng)三極管的保護(hù)。 4．單片機(jī)控制信號(hào)輸出后，繼電器沒(méi)按預(yù)定設(shè)計(jì)產(chǎn)生動(dòng)作。 3．人存在的教室中，若人體超過(guò)十秒沒(méi)有活動(dòng)，人體傳感器是不會(huì)有信號(hào)輸出的，那么如何判定教室此時(shí)有人的問(wèn)題。此問(wèn)題可通過(guò)選用輸出電壓低些的變壓器，并在集成穩(wěn)壓器前串入兩只二極管降壓，同時(shí)增大散熱片來(lái)解決。 1．電源供電電路中集成穩(wěn)壓器溫度過(guò)高。 程序調(diào)試完畢后，利用編程器將程序固化到單片機(jī)中，使整個(gè)系統(tǒng)運(yùn)行起來(lái)。 在應(yīng)用系統(tǒng)各模塊電路調(diào)試成功后，將程序加載到在線仿真器上，這時(shí)就能單步或連續(xù)地執(zhí)行目標(biāo)程序，同時(shí)也可以根據(jù)需要分段設(shè)置斷點(diǎn)執(zhí)行程序。 (3)動(dòng)態(tài)調(diào)試：控制系統(tǒng)的軟件和硬件是密切相關(guān)的，由于軟件模擬開(kāi)發(fā)系統(tǒng)不能對(duì)硬件部分進(jìn)行診斷，同時(shí)也不能實(shí)時(shí)在線仿真，所以用戶(hù)程序還需跟硬件連接起來(lái)進(jìn)行聯(lián)調(diào)，同時(shí)對(duì)軟件和硬件進(jìn)行檢 查和診斷。 (2)軟件調(diào)試：在軟件調(diào)試時(shí)采用在計(jì)算機(jī)上利用模擬軟件實(shí)現(xiàn)對(duì)單片機(jī)的硬件模擬、指令模擬及運(yùn)行狀態(tài)模擬，從而完成應(yīng)用軟件開(kāi)發(fā)的全過(guò)程。在將芯片、傳感器等元件連接到電路板上時(shí)，要保證各處電源極性、電壓正確，以防止因電源極性接反或電壓過(guò)高損壞芯片或傳感器。 第五章 系統(tǒng)調(diào)試 運(yùn)行及問(wèn)題分析 單片機(jī)系統(tǒng)調(diào)試方法及步驟 單片機(jī)系統(tǒng)的調(diào)試應(yīng)包括硬件及軟件兩部分，主要是通過(guò)調(diào)試發(fā)現(xiàn)硬件及軟件中存在的問(wèn)題，查看其運(yùn)行結(jié)果是否符合設(shè)計(jì)要求。 本系統(tǒng)在運(yùn)行過(guò)程中需要顯示查看的數(shù)據(jù)有時(shí)鐘及顯示數(shù)值。然后將數(shù)據(jù)送到 ULN2803 輸入端相連接單片機(jī)的 P0 端口即可。而共陽(yáng)極數(shù)碼管的位信號(hào)驅(qū)動(dòng)則采用 8 個(gè)晶體管 9012 來(lái)實(shí)現(xiàn)。此芯片是八組 NPN 型達(dá)林頓功放三極管集成芯片，典型的輸入電壓是 5V，集電極輸出功率可達(dá) 50V。本系統(tǒng)中采用共陽(yáng)極的數(shù)碼管，其中采用 ULN2803 作為驅(qū)動(dòng)數(shù)碼管的段選的芯片，采用簡(jiǎn)單又便宜的 9012 三極管來(lái)驅(qū)動(dòng)數(shù)碼管的位選，節(jié)約成本，程序編寫(xiě)簡(jiǎn)單。0x01)； //每次傳輸?shù)妥止?jié) addr = 1； //右移一位 SCLK = 1； } //讀取數(shù)據(jù) for ( i=8； i0； i ) { ACC_7=DIO； SCLK = 1； ACC=1； SCLK = 0； } CE=0；