【文章內(nèi)容簡介】 0H MAIN: MOV P2, 0FFH MOV P0, 0C0H MOV P2, 0FEH ACALL DELAY1 MOV P2, 0FFH MOV P0, 0F9H MOV P2, 0FDH ACALL DELAY1 MOV P2, 0FFH MOV P0, 0A4H MOV P2, OFBH MOV P2, 0FFH AJMP MAIN DELAY1: MOV R6, 02H AGAIN: MOV R7, 8FH DELAY: DJNZ R7, DELAY DJNZ R6, AGAIN RET END 結(jié)果數(shù)碼管正確顯示了 0、 2這三個數(shù)，顯示系統(tǒng)調(diào)試成功。 軟件測試要注意一下幾點： 陜西理工學(xué)院畢業(yè)設(shè)計 第 15 頁 共 57 頁 1）在編寫 I2C串行歸一化存儲子程序時本來出了點錯，后經(jīng)過多次調(diào)試才運行正確。 2）里程 /速度控制程序是系統(tǒng)程序的重點，所以它當(dāng)然也是軟件調(diào)試的重點。 3）顯示系統(tǒng)最好先調(diào)試。 4）用軟件進(jìn)行仿真時要充分利用其逐步調(diào)試功能。 電路實物圖如圖 。 圖 電路實物圖 陜西理工學(xué)院畢業(yè)設(shè)計 第 16 頁 共 57 頁 5 設(shè)計總結(jié)與展望 通過本次設(shè)計，使我對單片機(jī)知識 和理解更一步加深了，掌握了簡易數(shù)字里程表的設(shè)計，組裝和調(diào)試方法。并且使我更加熟練的應(yīng)用仿真軟件，讓我學(xué)到了如何運用軟件測試電路的可行性，并且對電路的調(diào)試改進(jìn)都有一個很大的提高。 這個過程中我遇到了很多困難，比如如何運用仿真軟件畫圖，如何組織一些比較專業(yè)的語言，以及上網(wǎng)查閱資料。雖說費勁，但是樂趣也不少。通過這次設(shè)計，我們了解到平時知識的積累真的很重要，在遇到困難時一定要向認(rèn)真思考，查閱相關(guān)資料，不可盲目退縮，努力后就一定會有收獲。 這次畢業(yè)設(shè)計收獲頗豐，不僅是對自己個人能力的提高，也讓我認(rèn)識到了自己的局限， 通過這次的畢業(yè)設(shè)計為以后的學(xué)習(xí)奠定了一個更好的基礎(chǔ)。 展望 本系統(tǒng)操作簡單，易于實現(xiàn)。硬件部分采用的器件應(yīng)用較廣泛，且價格低廉，如 AT89C51 單片機(jī)、 D 觸發(fā)器 74LS7存儲器 24C0驅(qū)動器 74LS244 等。這就意味著所有的器件功能比較強大、穩(wěn)定。尤其是本次設(shè)計的核心元件 AT89C52 單片機(jī)，軟件技術(shù)成熟，并具有種類齊全的支持芯片。這類微處理器既可用作控制器又適合于做數(shù)據(jù)處理，而且成本也甚是低廉。軟件采用模塊化設(shè)計，可讀性強，方便二次開發(fā)。 本次設(shè)計電路簡單、低成本，而且能夠滿足人們對高性能 、多功能自行車的要求，可在很多里程 /速度測量場合使用，具有廣泛的應(yīng)用前景。 陜西理工學(xué)院畢業(yè)設(shè)計 第 17 頁 共 57 頁 致謝 首先，我要感謝老師在這次畢業(yè)論文設(shè)計中，耐心的指導(dǎo)我，在整個畢業(yè)論文設(shè)計過程中，使我對單片機(jī)方面的知識與技能 ,都得到了進(jìn)一步了解與提高。給予我很大的鼓勵與指導(dǎo)，在此我衷心的感謝梁老師！感謝她在各方面給予我的幫助，使我能夠有一個良好的書寫環(huán)境。同時在做此論文設(shè)計時梁老師還為我提供軟件材料，為我更好的完成本論文設(shè)計提供了良好的條件。 然后，我還要感謝我身邊的同學(xué)、朋友，在這個過程中他們也給了我很大的鼓勵與幫助 ,使我能夠順利的完成論文。 陜西理工學(xué)院畢業(yè)設(shè)計 第 18 頁 共 57 頁 參考文獻(xiàn) [1] 李朝青 . 單片機(jī)原理及接口技術(shù) . 北京航空航天大學(xué)出版社 , 1994. [2] 張毅剛 , 劉杰 . MCS51單片機(jī)原理及應(yīng)用 . 哈爾濱工業(yè)大學(xué)出版社 ,2021. [3] 松井邦彥 , 梁瑞林 . 傳感器應(yīng)用技術(shù) 141例 . 科學(xué)出版社 , 2021. [4] 張洪潤 , 張亞凡 . 傳感器技術(shù)與應(yīng)用教程 . 清華大學(xué)出版社 , 2021. [5] 何希才 . 傳感器及其應(yīng)用 . 國防工業(yè)出版社 , 2021. [6] 刁文興 . 自行車電子里程表的初步設(shè)計 . 南京工業(yè)職業(yè)技術(shù)學(xué)院學(xué)報 , 2021, 6: 2528安宗權(quán) . 電動電子車速里程表分頻電路設(shè)計 . 自動化與儀器儀表 , 2021, 5: 3944. [7] 閻煥忠 , 王長濤 , 馬斌 . 單片機(jī)控制里程轉(zhuǎn)速表的設(shè)計 . 沈陽建筑工程學(xué)院學(xué)報（自然科學(xué)版） ,2021, 4: 145148. [8] 謝自美 . 電子線路設(shè)計 .實驗 .測試 [M].武漢：華中科技大學(xué)出版社， 2021： 212230. [9] 張福學(xué) . 傳感器使用電路 150例 .中國技術(shù)出版社 .1992. [10] Meehan Joanne,Muir in Merseyside SMEs:Benefits and barriers[J].. TQM Journal. 2021 [11] Yeager to troubleshoot your electronic scale[J]..powder and Bulk 陜西理工學(xué)院畢業(yè)設(shè)計 第 19 頁 共 57 頁 附錄 A Structure and function of the MCS51 series Structure and function of the MCS51 series onechip puter is a name of a piece of onechip puter series which Intel Company produces. This pany introduced 8 topgrade onechip puters of MCS51 series in 1980 after introducing 8 onechip puters of MCS48 series in 1976. It belong to a lot of kinds this line of onechip puter the chips have,such as 8051, 8031, 8751, 80C51BH, 80C31BH,etc., their basic position, basic performance and instruction system are all the same. 8051 daily representatives 51 serial onechip puters [10]. An onechip puter system is made up of several following parts: ( 1) One microprocessor of 8 (CPU). ( 2) At slice data memory RAM (128B/256B),it use not depositting not can reading /data that write, such as result not middle of operation, final result and data wanted to show, etc. ( 3) Procedure memory ROM/EPROM (4KB/8KB ), is used to preserve the procedure , some initial data and form in slice. But does not take ROM/EPROM within some onechip puters, such as 8031 , 8032, 80C ,etc.. ( 4) Four 8 run side by side I/O interface P0 four P3, each mouth can use as introduction , may use as exporting too. ( 5) Two timer / counter, each timer / counter may set up and count in the way, used to count to the external incident, can set up into a timing way too, and can according to count or result of timing realize the control of the puter. ( 6) Five cut off cutting off the control system of the source . ( 7) One all duplexing serial I/O mouth of UART (universal asynchronous receiver/transmitter (UART) ), is it realize onechip puter or onechip puter and serial munication of puter to use for. ( 8) Stretch oscillator and clock produce circuit, quartz crystal finely tune electric capacity need outer. Allow oscillation frequency as 12 megahertas now at most. Every the abovementioned part was joined through the inside data bus .Among them, CPU is a core of the onechip puter, it is the control of the puter and mand centre, made up of such parts as arithmetic unit and controller , etc.. The arithmetic unit can carry on 8 persons of arithmetic operation and unit ALU of logic operation while including one, the 1 storing device temporarilies of 8, storing device 2 temporarily, 839。s accumulation device ACC, register B and procedure state register PSW, etc. Person who accumulate ACC count by 2 input ends entered of checking etc. temporarily as one operation often, e from person who store 1 operation is it is it make operation to go on to count temporarily , operation result and loopback ACC with another one. In addition, ACC is often regarded as the transfer station of data transmission on 8051 inside . The same as general microprocessor, it is the busiest register. Help remembering that agreeing with A expresses in the order. The controller includes the procedure counter , the order is depositted, the order decipher, the oscillator and timing circuit, etc. The procedure counter is made up of counter of 8 for two, amounts to 16. It is a byte address counter of the procedure in fact, the content is the next IA that will carried out in PC. The content which changes it can change the direction that the procedure carries out . Shake the circuit in 8051 onechip puters, only need outer qu