可燃性氣體探測警報控制器設計論文-資料下載頁

　　

【正文】 ，產生脈沖，同時進行2分頻。致謝經過三個月的努力，畢業論文的各項工作即將完成，在此，感謝每一位在這個過程中幫助過我的人。首先，我要感謝的是我的指導老師杜先君老師，杜先君老師平日里工作繁忙，但為了我們能順利的畢業，在撰寫畢業論文的每個階段，都給予了我們細心的指導和無微不至的幫助。如果沒有杜老師的熱心指導和幫助，我們是不可能這么順利的完成論文的撰寫工作的。另外，他在學術上的嚴謹精神也是我永遠學習的榜樣，并將對我今后的學習和工作產生積極的影響。在大學學習的四年間，學校給了我們最好的教育，讓我們學習到了大量的專業知識，并為我們提供了便利信息平臺（圖書館），使得我們能夠在此基礎上順利的完成論文的撰寫工作。通過對可燃氣體探測報警器的設計，將我學過的理論知識運用到了實踐中，同時對所學過的知識有了更深層次的理解與掌握，將從前那些模糊的知識逐漸理解與加深了印象，這次的課程設計對我們以后從事的工作有著很大的幫助，學會了運用各種畫圖軟件，同時，也鍛煉了我的獨立思考及解決問題的能力，通過和同組同學的交流，學到了許多知識，如何處理設計過程中遇到的各種問題，鍛煉了我們解決問題的能力。實踐，是一面很亮的鏡子，能夠通過它看出我們自身的缺點，能夠通過它查找出自身缺乏的知識。通過這次設計，我明顯感覺到“書到用時方恨少”。在以后的生活中我會不斷地學習充實自己，多動手查閱相關的資料，拓展自己的知識層次。參考文獻[1][M].北京：機械工業出版社，.[2][M]．北京：北京航空航天大學，.[3][M].大連：大連理工大學出版社，.[4][M].北京：化學工業出版社，.[5]李永生，[J].. 13.[6]李忠國，[M].北京：人民郵電出版社，.[7][J]..(3):12[8]宋浩，[M].北京：清華大學出版社，.[9]張保衛，尚家封，[J].山東消防，[10]羅翼，[M].北京：中國電力出版社，.[13]堂賢遠，[M].西安：電子科技大學出版社，.附錄Ⅰ可燃氣體探測報警器程序清單：附錄Ⅱ:外文原文1： With the puter in the social sphere in recent years, the penetration and the development of large scale integrated circuits, microcontroller applications are continually deepening, because of its powerful function, small size, low power consumption, cheap, reliable, easy to use, etc. therefore particularly suitable for systems with control of more and more widely used in automatic control, intelligent instruments, meters, data acquisition, military products and home appliances fields, SCM is often used as a core ponent in according to the specific hardware architecture, and applicationspecific features of the software objects are bined to make perfect. Structure and function of the MCS51 series onechip puter MCS51 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 . 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 quartz crystal and frequency to finely tune the electric capacity, its frequency range is its 12MHZ of . This pulse signal, as 8051 basic beats of working, namely the minimum unit of time. 8051 is the same as other puters, the work in harmony under the control of the basic beat, just like an orchestra according to the beat play that is manded. There are ROM (procedure memory , can only read ) and RAM in 8051 slices (data memory, can is it can write ) two to read, they have each independent memory address space, dispose way to be the same with general memory of puter. Procedure 8051 memory and 8751 slice procedure memory capacity 4KB, address begin from 0000H, used for preserving the procedure and form constant. Data 8051 8751 8031 of memory data memory 128B, address false 00FH, use for middle result to deposit operation, the data are stored temporarily and the data are buffered etc.. In RAM of this 128B, there is unit of 32 byteses that can be appointed as the job register, this and general microprocessor is differen