自動存包柜的設計

電子機電論文編號:JD118   附開題報告,外文翻譯,大圖,字數:11845,頁數:34

 目   錄 
前言...............................................................2
自動存包柜的硬件設計...............................................3
1.1  設計技術要求..................................................3
1.2  課題分析......................................................3
1.3  設計模型分析..................................................3
1.4  硬件設計總體思路..............................................4
1.5  方案論證與選擇................................................5
各部分電路及其功能闡述.............................................10
2.1    CPU控制部分.................................................10
2.1.1  復位電路....................................................10
2.1.2  時鐘電路....................................................11
2.1.3  程序存儲器擴展電路..........................................11
2.2    鍵盤/顯示控制部分...........................................13
2.3    執行機構部分................................................14
軟件設計...........................................................15
3.1  軟件設計總體思路..............................................15
3.2  內存單元及各類地址分配........................................15
3.3  隨機密碼的產生................................................16
3.4  程序流程圖及其說明............................................19
系統調試...........................................................20
4.1    硬件調試....................................................29
4.1.1  最小系統板的調試............................................29
4.1.2  鍵盤/顯示電路的調試.........................................29
4.1.3  8255A電路的調試.............................................30
4.2    軟件調試....................................................30
4.2.1  查鍵值子程序的調試..........................................30
4.2.2  HD7279A鍵顯程序的調試.......................................31
4.2.3  隨機密碼產生及核對子程序的調試..............................31
4.2.4  解鎖子程序的調試............................................31
4.3    整機調試及系統使用說明......................................31
4.4    系統功能擴展分析............................................32
總結...............................................................33
致謝...............................................................34
參考文獻...........................................................35
附錄（程序清單、電路原理圖、PCB板圖)...............................36

摘  要

    本課題由8051單片機構成核心控制系統，整個系統由主控部分、鍵盤顯示控制部分、執行部分三部分組成，通過密碼的核對完成自動存包取包過程。
第一部分：CPU核心控制部分，由單片機8051、復位電路、時鐘電路等構成，是整個系統的核心。
第二部分：鍵盤顯示控制部分。用HD7279A對8個數碼管和14個按鍵進行管理，8個數碼管用于顯示兩位柜號和8位密碼，14個按鍵分別為10個數字鍵和4個功能鍵。通過這些鍵盤，用戶就可以完成所有的操作。
第三部分：執行機構部分。它是通過8051的并行口擴展一片8255A芯片，并通過8255A控制20個燈的狀態（亮滅）來模擬柜子的存包取包的過程。
軟件部分主要采用我們自己設定的一種與柜號相關聯的算法來產生一組8位的隨機密碼，而密碼的產生、核對過程就對應存包、取包的過程。
本系統具有如下特色：
經濟實用、操作簡單且便于安裝。
能產生一組8位隨機密碼，密碼使用一次有效；有三次容錯功能和解鎖功能，因而系統安全可靠。
利用軟件產生隨機密碼而不是硬件，使得硬件更為簡潔、可靠、穩定。
關鍵詞：自動存包柜、算法、隨機密碼、容錯、解鎖

 Abstract:

This subject is become key control systems by 8051 forms and an organization. The whole system is shown and is controlled partly, carried out some three parts to make up by top management part, keyboard, Through checking that finishes storing and wrapping up and fetch the course of the bag automatically of the password.
The first part : CPU core control and partly, form of 8051 one-chip computers, whole core of system.. Through these keyboards, users can finish all operation.
Second part : The keyboard show that controls some. In charge of with HD7279A to 8 number and 14 button go on and manage, 8 number in charge of and use for and show two cupboard symbol and 8 password, 14 buttons are 10 numerical keys respectively and 4 function keys. Through these keyboards, users can finish all operation.
The third part : Executive body's part. In it through the not running side by side because there aren't mouth, and control through 8255 A there aren't the states of light of 20 pieces( on to kill) of 8051 and simulate Storing and wrapping up the course which fetches the bag..
Software part adopt we one that oneself establish correlate with number of the cupboard algorithm that unite come and produce one password at random of 8 of group mainly, And production, check course correspond to and deposit the bag, fetch the course of the bag of password.
This system has the following characteristic : 1、Economical and practical, operate simple and easy to installly. 2、Can produce one group 8 password at random, password use one effective; There is fault-tolerant function three times and locking the function , therefore the system is safe and reliable. 3、Utilize software produce password instead of hardware, make hardware more succinct, reliable, stability at random.
Keyword: Store a bag of cupboards, algorithm, the password, fault-tolerant, unblock at random automatically