【文章內(nèi)容簡(jiǎn)介】 D654321DCBAT i tl eN u m b e r R e v i s i o nS i z eBD a t e : 1 M a r 2 0 1 1 S h e e t o f F i le : O :\ 單片機(jī)設(shè)計(jì)實(shí)例 \ 3 .智能交通燈控制系統(tǒng) \ 電路原理圖 \ 智能交通燈控制系統(tǒng) .d d bD r a w n B y :E A /V P31X119X218R E S E T9RD17WR16I N T 012I N T 113T014T115P 1 01P 1 12P 1 23P 1 34P 1 45P 1 56P 1 67P 1 78P 0 039P 0 138P 0 237P 0 336P 0 435P 0 534P 0 633P 0 732P 2 021P 2 122P 2 223P 2 324P 2 425P 2 526P 2 627P 2 728P S E N29A L E /P30T X D11R X D10U1 A T 8 9 C 5 1 abfcgdeD P Y1234567abcdefg8dpdpD S 2abfcgdeD P Y1234567abcdefg8dpdpD S 8abfcgdeD P Y1234567abcdefg8dpdpD S 1abfcgdeD P Y1234567abcdefg8dpdpD S 3Y1 1 2 M H ZC1 3 0 P FC2 3 0 P F123456781615141312111098 * 0 .2 KC340uFR 1 40 .5 kK4V C CabfcgdeD P Y[ L E D g n ]1234567abcdefgD S 4abfcgdeD P Y[ L E D g n ]1234567abcdefgD S 5abfcgdeD P Y[ L E D g n ]1234567abcdefgD S 6abfcgdeD P Y[ L E D g n ]1234567abcdefgD S 7123456781615141312111098 * 0 .2 KR44 .7 kR54 .7 kR64 .7 kR74 .7 kR84 .7 kR34 .7 kR94 .7 kR24 .7 kR 1 04 .7 kR14 .7 kR 1 14 .7 kR 1 24 .7 k東西綠南北紅東西黃南北黃東西紅南北綠K1K2K3四個(gè)路口的倒計(jì)時(shí)顯示裝置其中： D S 1 和 D S 2 是一組， D S 3 和 D S 4 是一組， D S 5 和 D S 6 是一組， D S 7 和 D S 8 是一組2kR 1 3V C CV C CV D 1V D 2V D 3V D 4V D 5V D 6V D 7V D 8V D 9V D 1 0V D 1 1V D 1 2交通燈裝置R 1 50 .1 KR E S E T I N1G N D2S R T3S W T4V C C8R E S E T7W D I6W D S5U2M A X 6 3 0 4R 1 79 .1 KR 1 63 .9 KC41 0 P FC51 0 0 P FR E S E TP 1 .6V C CK5S W P B結(jié)束語(yǔ) 28 本設(shè)計(jì)的硬件電路較簡(jiǎn)單，硬件電路容易實(shí)現(xiàn)。設(shè)計(jì)出滿足系統(tǒng)功 能要求的程序是該設(shè)計(jì)任務(wù)的重點(diǎn)和難點(diǎn)，該設(shè)計(jì)要求實(shí)現(xiàn)的功能有： （ 1） 能夠控制四個(gè)路口的交通燈按照既定的功能要求進(jìn)行有規(guī)律的變化。 （ 2） 四個(gè)路口各有一個(gè)倒計(jì)時(shí)顯示裝置，并在倒計(jì)時(shí)還剩 5s 時(shí)點(diǎn)亮閃爍的黃燈以起禁示作用。 （ 3） 設(shè)置三個(gè)按鍵分別處理 3 種不同的緊急情況。 設(shè)計(jì)該系統(tǒng)的控制程序應(yīng)遵循一定的控制規(guī)律。例如，南北方向之間，東西方向之間交通的變化規(guī)律是一樣的；此外，四個(gè)路口的倒計(jì)時(shí)顯示裝置的時(shí)間參數(shù)的變化規(guī)律也是一致的，等等。 致謝 29 在學(xué)院數(shù)碼科技 系各位領(lǐng)導(dǎo)以及指導(dǎo)教 師的大力支持下，我基本完成了這次設(shè)計(jì)任務(wù)。我在這一次畢業(yè)設(shè)計(jì)過(guò)程中，很是受益匪淺。 通過(guò)對(duì)自己在大學(xué) 三 年時(shí)間里所學(xué)的 知識(shí)的回顧，并充分發(fā)揮對(duì)所學(xué)知識(shí)的理解和對(duì)畢業(yè)設(shè)計(jì)的思考及 書(shū)面表達(dá)能力， 最終完成了。這 為自己今后進(jìn)一步深化學(xué)習(xí)，積累了一定寶貴的經(jīng)驗(yàn) 。撰寫(xiě)論文的過(guò)程 也是專(zhuān)業(yè)知識(shí)的學(xué)習(xí)過(guò)程 ，它使我 運(yùn)用已有的專(zhuān)業(yè)基礎(chǔ)知識(shí)， 對(duì)其 進(jìn)行 設(shè)計(jì) ，分析和解決一個(gè)理論問(wèn)題或?qū)嶋H問(wèn)題，把知識(shí)轉(zhuǎn)化為能力的實(shí)際訓(xùn)練。 在同學(xué)及指導(dǎo)教師孔老師的一些指點(diǎn)和引導(dǎo)下，真正 培養(yǎng) 了我 運(yùn)用所學(xué)知識(shí)解決實(shí)際問(wèn)題的能力 。 通過(guò)這次設(shè)計(jì)我發(fā)現(xiàn) ， 只有理論 水平 提高了； 才能夠 將 課本知識(shí) 與 實(shí)踐相 整合， 理論知識(shí) 服務(wù)于教學(xué)實(shí)踐， 以增強(qiáng)自己的動(dòng)手 能力 。 這個(gè) 設(shè)計(jì)在現(xiàn)實(shí)社會(huì)中也存在著一定的價(jià)值和意 義 ，從中 我獲得很深刻的經(jīng)驗(yàn) 。通過(guò)這次課程設(shè)計(jì)，我們知道了理論和實(shí)際的距離，也知道了理論和實(shí)際想結(jié)合的重要性，也從中得知了很多書(shū)本上無(wú)法得知的知識(shí)。 我們的 學(xué)習(xí)不但要 立足于 書(shū)本 ，以解決 理論和實(shí)際 教學(xué)中的實(shí)際問(wèn)題為目的， 還要 以 實(shí)踐相結(jié)合 ， 理論 問(wèn)題即 實(shí)踐 課題， 解決問(wèn)題 即 課程研究 ， 學(xué)生自己就是一個(gè) 專(zhuān)家， 通過(guò)自己的手來(lái)解決問(wèn)題比用腦子解決問(wèn)題更加深刻 。 學(xué)習(xí)就應(yīng)該 采取 理論 與 實(shí)踐 結(jié)合的方式， 理論的問(wèn)題， 也就是 實(shí)踐性 的課題 。這種做法既有助于完成 理論知識(shí)的鞏固 ，又有助于帶動(dòng)實(shí)踐，解決實(shí)際問(wèn)題 ，加強(qiáng)我們的動(dòng)手能力和解決問(wèn)題的關(guān)鍵。 30 參考文獻(xiàn) [1] 李海濱 .片春媛 .許瑞雪編 .《單片機(jī)技術(shù)課程設(shè)計(jì)與項(xiàng)目實(shí)例》 ,中國(guó)電力出版社 ,2020 [2] 王靜霞主編 .《 單片機(jī)應(yīng)用技術(shù) 》 .電子工業(yè) 出版社 ,2020 [3] 雄建云 主編 .《 Protel99 se EDA 技術(shù)及應(yīng)用 》 .北京 機(jī)械 工業(yè)出版社， 2020 [4] 曹天漢 主編 .《單片機(jī)原理與接口技術(shù)》 ,電子工業(yè)出版社 ,2020 [5] 何立 民主編 .《 單片機(jī)高等教程 》 .北京 航空航天大學(xué)出版社 ,2020 [6] 何立民 主編 .《單片機(jī)應(yīng)用系統(tǒng)設(shè)計(jì)系統(tǒng)配置與接口技術(shù)》 ,北京航空航天大學(xué)出版社 ,2020 g an employment tribunal clai Employment tribunals sort out disagreements between employers and employees. You may need to make a claim to an employment tribunal if: ? you don39。t agree with the disciplinary action your employer has taken against you ? your employer dismisses you and you think that you have been dismissed unfairly. For more information about dismissal and unfair dismissal, see Dismissal. You can make a claim to an employment tribunal, even if you haven39。t appealed against the disciplinary action your employer has taken against you. However, if you win your case, the tribunal may reduce any pensation awarded to you as a result of your failure to appeal. Remember that in most cases you must make an application to an employment tribunal within three months of the date when the event you are plaining about happened. If your application is received after this time limit, the tribunal will not usually accept i. If you are worried about how the time limits apply to you, take advice from one of the anisations listed under Further help. Employment tribunals are less formal than some other courts, but it is still a legal process and you will need to give evidence under an oath or affirmation. Most people find making a claim to an employment tribunal challenging. If you are thinking about making a claim to an employment tribunal, you should get help straight away from one of the anisations listed under Further help. If you are being represented by a solicitor at the tribunal, they may ask you to sign an agreement where you pay their fee out of your pensation if you win the case. This is known as a damagesbased agreement. In England and Wales, your solicitor can39。t charge you more than 35% of your pensation if you win the case. If you are thinking about signing up for a damagesbased agreement, you should make sure you39。re clear about the terms of the agreement. It might be best to get advice from an experienced adviser, for example, at a Citizens Advice Bureau. To find your nearest CAB, including those that give advice by , click on nearest CAB. For more information about making a claim to an employment tribunal, see Employment tribunals. The (lack of) air up there Watch mCayman Islandsbased Webb, the head of Fifa39。s 31 antiracism taskforce, is in London for the Footbal