【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 天津職業(yè)技術(shù)師范大學(xué) 2021屆本科生畢業(yè)設(shè)計(jì) 28 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 back to heaven. Driven by Niulan。 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。 最后還要 感謝 班級(jí)里專業(yè)知識(shí)較強(qiáng)的 幾位同學(xué) ，是你們 對(duì)設(shè)計(jì)的不同看法，激發(fā)了更為豐富的設(shè)計(jì)靈感，是你們考慮問題的不同角度，使得問題得以全面兼顧的思考！感謝你們 為此系統(tǒng)進(jìn)行 細(xì)心 分析 與交流探討 ， 由于你們的熱情指點(diǎn) ， 使 得 系統(tǒng)設(shè)計(jì)中存在的問題 能及時(shí)的發(fā)現(xiàn)， 倘若 沒有你們的 熱心幫助 ，此次設(shè)計(jì) 也 就不會(huì)這么 順利地結(jié)稿，在此 向你們 表示深深的謝意 。 此外，我還要感謝大學(xué)里曾經(jīng)教導(dǎo)及幫助過我的眾多老師 ， 謝謝您們 的關(guān)心 與 幫助。 參考文獻(xiàn) [1]姚福安，電子電路設(shè)計(jì)與實(shí)踐【 M】山東科學(xué)技術(shù)出版社， 2021 [2]楊振江，新型集成電路【 M】西安電子科技大學(xué)出版社， 2021 [3]楊書華，王福瑞，李全利，單片機(jī)時(shí)間與應(yīng)用【 M】清華大學(xué)出版社， 2021 天津職業(yè)技術(shù)師范大學(xué) 2021屆本科生畢業(yè)設(shè)計(jì) 24 [4]徐雪峰，傳感器變送器測(cè)控儀表大全【 M】哈爾濱工業(yè)大學(xué)出版社， 2021 [5]肖玲妮，袁增貴， Protel99SE 印刷電路版設(shè)計(jì)教程【 M】北京，清華大學(xué)出版社 2021 [6]胡漢才，單片機(jī)原理以及其接口技術(shù)【 M】北京機(jī)械工業(yè)出版社， 2021 [7]何立民 . 單片機(jī)高級(jí)教程 【 M】 第 1 版．北京：北京航空航天大學(xué)出版社，2021 [8]劉守義等 ,單片機(jī)技術(shù)基礎(chǔ) [M].西安電子科技大學(xué)出版社， 2021 [9]徐惠民、安德寧 , 單片微型計(jì)算機(jī)原理接口與 應(yīng)用 第 1版北京郵電大學(xué)出版社， 1996 [10]夏繼強(qiáng) ,單片機(jī)實(shí)驗(yàn)與實(shí)踐教程 【 M】 北京航空航天大學(xué)出版社 , 2021 [11]李廣第 ,單片機(jī)基礎(chǔ) 第 1版 【 M】 北京航空航天大學(xué)出版社， 1999 [12]趙曉安 ,MCS51 單片機(jī)原理及應(yīng)用 【 M】 天津大學(xué)出版社， 2021 [13]李平等 ,單片機(jī)入門與開發(fā) 【 M】 .機(jī)械工業(yè)出版社， 2021 [14]陳海宴 ,51 單片機(jī)原理及應(yīng)用 【 M】 .北京航空航天大學(xué)出版社， 2021 [15]李廣弟等 ,單片機(jī)基礎(chǔ) 【 M】 .北京航空航天出版社， 2021 [16]王東峰等 ,單片機(jī) C 語言應(yīng)用 100 例 【 M】 電子工業(yè)出版社， 2021 [17]李平等 ,單片機(jī)入門與開發(fā) 【 M】 .機(jī)械工業(yè)出版社， 2021 [18]鐘富昭等 ,8051 單片機(jī)典型模塊設(shè)計(jì)與應(yīng)用 【 M】 .人民郵電出版社， 2021 [19]陳堂敏 .劉煥平主編 .單片機(jī)原理與應(yīng)用 【 M】 北京 :北京理工大學(xué)出版社 ,2021 天津職業(yè)技術(shù)師范大學(xué) 2021屆本科生畢業(yè)設(shè)計(jì) 25 附錄 1： 復(fù)雜電路圖 天津職業(yè)技術(shù)師范大學(xué) 2021屆本科生畢業(yè)設(shè)計(jì) 26 致 謝 本系統(tǒng) 設(shè)計(jì) 的 撰寫和設(shè)計(jì) 過程中 ， 我學(xué)到了很多新 的知識(shí)，也體會(huì)到設(shè)計(jì)的有趣之處 ！ 在此， 我要感謝 指導(dǎo) 導(dǎo)師 何林 ， 系統(tǒng)的 設(shè)計(jì) 過程中， 在他的指點(diǎn)下，我敲開了一扇扇知識(shí)的大門； 每 當(dāng)我遇到新的 問題時(shí) ， 何 老師 都是 耐心 加 細(xì)心 的 剖析問題， 正是老師無私熱情的幫助， 使得 設(shè)計(jì) 更加 順利的進(jìn)行。 從基于單片機(jī)的智能散熱器的系 統(tǒng)設(shè)計(jì)所取得的良好的控制效果開來，類似的電機(jī)調(diào)速系統(tǒng)，如在機(jī)器人小車競(jìng)賽中，在日常 家用電器的電機(jī)調(diào)速應(yīng)用中，都可以運(yùn)用此系統(tǒng)，經(jīng)過稍加修改后即能達(dá)到理想的效果。系統(tǒng)在運(yùn)行過程中，根據(jù)實(shí)時(shí)溫度進(jìn)行判斷，控制器根據(jù)信號(hào)的變化進(jìn)行判斷，輸出結(jié)果作用于 MOS 管上，最終實(shí)現(xiàn)電機(jī)的天津職業(yè)技術(shù)師范大學(xué) 2021屆本科生畢業(yè)設(shè)計(jì) 23 調(diào)速；此外還模擬了報(bào)警故障，例如溫度超高，電機(jī)堵轉(zhuǎn)等報(bào)警故障，系統(tǒng)能夠很好的檢測(cè)報(bào)警故障并產(chǎn)生相應(yīng)的報(bào)警信息。 _nop_()。 //恢復(fù)數(shù)據(jù)線 天津職業(yè)技術(shù)師范大學(xué) 2021屆本科生畢業(yè)設(shè)計(jì) 22 DelayXus(1)。 DelayXus(60)。 //延時(shí)等待 dat = 1。 i++) //8 位計(jì)數(shù)器 { DQ = 0。 for (i=0。 //等待時(shí)間片結(jié)束 } return dat。 //接收延時(shí) if (DQ) dat |= 0x80。 //延時(shí)等待 DQ = 1。 DQ = 0。 i8。 BYTE dat = 0。 //等待設(shè)備釋放數(shù)據(jù)線 DelayXus(180)。 //等待 60us CY = DQ。 DQ =