【正文】 路仿真圖 .......................................................... 9 硬件連接實物圖 .............................................................................................9 4. 各種水位下的 仿真 圖 ........................................................................ 10 高水位 狀態(tài)下仿真 圖 ............................................................... 10 低水位狀態(tài)下仿真圖 ................................................................................. 10 5. 通信單元硬件設(shè)計 ............................................................................................... 11 6．上位機顯示單元 .................................................................................................. 11 上位機接受部分窗體控件 ........................................................................... 12 7. 項目設(shè)計總結(jié) ....................................................................................................... 14 8. 參考文獻 ........................................................................................ 15 附錄 1 ................................................................................................ 16 水位檢測報警系統(tǒng) 3 1 設(shè)計要求與任務(wù) 設(shè)計要求： ⑴利用單片機及揚聲器、水位傳感器等器件設(shè)計；⑵將探測到的水位變化信號轉(zhuǎn)換為電壓信號，經(jīng)調(diào)理電路整形處理為 TTL 電平送入單片機；⑶單片機對送入的信號進行數(shù)據(jù)處理，在 LED 或 LCD 上進行水位顯示，超出水位警戒線時發(fā)出 報警提示。 原始數(shù)據(jù)：水位傳感器； 51單片機；揚聲器。 該系統(tǒng)實現(xiàn)了水位監(jiān)測，水位控制，水位顯示，故障報警功能。在液位測量這一領(lǐng)域中，如江河湖海、城市用水等方面，大量數(shù)據(jù)長時間，多網(wǎng)點的采集記錄分析具有普遍的意義。同時， C 語言是單片機的重要“組成”，如 果能掌握好 C 語言編程，這將很大程度上提高了開發(fā)效率。 4粘度高不會干涸的液體，一般應(yīng)選用外徑較大的不銹鋼浮球。 無源器件 ,性能穩(wěn)定可靠，安全方便，抗干擾能力強，結(jié)構(gòu)簡單，安裝方便，維護費用低。 如果我們不使用此穩(wěn)壓電路也能實現(xiàn)我們的設(shè)計目的，但有時會產(chǎn)生水位誤判和不穩(wěn)定現(xiàn)象，所以我認為此電路是不可缺少的。半導(dǎo)體晶片由兩部分組成，一部分是 P 型半導(dǎo)體，在它里面空穴占主導(dǎo)地位，另一端是 N 型半 導(dǎo)體，在這邊主要是電子。仿真圖如下所示： 圖 10 低水位仿真圖 水位檢測報警系統(tǒng) 11 5 通信單元硬件設(shè)計 MAX485 僅有 8 個管腳，電路設(shè)計比較簡單。 圖 11 MAX485 引腳圖 水位檢測報警系統(tǒng) 12 水位變化當高水位發(fā)“ 1”時上位機接受到對應(yīng) ASCII 碼為 49，此時上 位機顯示“ 警戒！當前水位 太低 ！ ”。 我決定認真總結(jié)這次 項目 設(shè)計的經(jīng)驗，以及學(xué)習(xí)到的知識，來更加的充實自己的頭腦和完善自己的知識結(jié)構(gòu)。 using 。 public Form1() { InitializeComponent()。 = 0。 = ()。 (串口打開成功！ )。 } } } private void RecieveData() { while (true) { int str。 default: info = 接收數(shù)據(jù)失敗，無法知道當前水位！ 。 } try { ()。 水位檢測報警系統(tǒng) 19 } catch { (串口關(guān)閉失??！ )。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。s governing body, has also ordered an immediate investigation into the referee39。 Junior high school, thought to have a crush on just means that the real growth, but over the past three years later, his writing of alumni in peace, suddenly found that isn39。想要的，不想要的，界限明確，好像沒有什么可以撼動自己。t start planning... Those years, those days of do, finally, like youth, will end in our life. 此刻，天空是陰暗的，空氣里有著剛下過雨之后的清新因子。 Baumgartner the disappointing news: Mission aborted. r plays an important role in this mission. Starting at the ground, conditions have to be very calm winds less than 2 mph, with no precipitation or humidity and limited cloud cover. The balloon, with capsule attached, will move through the lower level of the atmosphere (the troposphere) where our daytoday weather lives. It will climb higher than the tip of Mount Everest ( miles/ kilometers), drifting even higher than the cruising altitude of mercial airliners (