【正文】 以對(duì)它的研究一直沒(méi)有明顯進(jìn)展。由于電子鎖的密鑰量（密碼量）極大，可以與機(jī)械鎖配合使用，并且可以避免因鑰匙被仿制而留下安全隱患。隨著電子技術(shù)的發(fā)展，各類電子產(chǎn)品應(yīng)運(yùn)而生，電子密碼鎖就是其中之一。它是從計(jì)算機(jī)輔助設(shè)計(jì)（ CAD）、計(jì)算機(jī)輔助制造（ CAM）、計(jì)算機(jī)輔助測(cè)試（ CAT）和計(jì)算機(jī)輔助工程（ CAE）等技術(shù)發(fā)展而來(lái)的。由于 FPGA 具有 ISP 功能，當(dāng)用戶需要更改時(shí)，如增 加口令位數(shù)和更改口令權(quán)限管理時(shí)，只需更改 FPGA 中的控制和接口電路，利用 EDA 工具將更新后的設(shè)計(jì)下載到 FPGA 中即可，無(wú)需更改外部電路，這就大大提高了設(shè)計(jì)效率。鍵盤(pán)式電子密碼鎖從目前的技術(shù)水平和市場(chǎng)認(rèn)可程度看，使用最為廣泛的是鍵盤(pán)式電子密碼鎖，該產(chǎn)品主要應(yīng)用于保險(xiǎn)箱、保險(xiǎn)柜和金庫(kù)，還有一部分應(yīng)用于保 管箱和運(yùn)鈔車。 電子密碼鎖系統(tǒng)主要由電子鎖體、電子密匙等部分組成，一把電子密匙里能存放多組開(kāi)鎖密碼，用戶在使用過(guò)程中能夠隨時(shí)修改開(kāi)鎖密碼，更新或配制鑰匙里開(kāi)鎖密碼。 控制模塊的實(shí)現(xiàn) ..................................................................................... 27 電子密碼鎖顯示模塊 .......................................................................................... 28 II 數(shù)碼管顯示原理 ..................................................................................... 28 譯碼顯示的實(shí)現(xiàn) ..................................................................................... 31 5 系統(tǒng)仿真 ......................................................................................................................... 32 系統(tǒng)的有關(guān)編譯與仿真 ...................................................................................... 32 去抖模塊的仿真 .................................................................................................. 32 密碼鎖輸入電路的仿真 ...................................................................................... 33 密碼鎖控制電路的仿真 ...................................................................................... 34 系統(tǒng)整體仿真 ...................................................................................................... 35 數(shù)碼管譯碼器仿真 .............................................................................................. 36 6 .結(jié)束語(yǔ) ............................................................................................................................. 37 致謝 ..................................................................................................................................... 38 參考文獻(xiàn) ............................................................................................................................. 39 基于 FPGA 的電子密碼鎖設(shè)計(jì) 1 1 緒論 隨著大規(guī)模和超大規(guī)?？删幊唐骷?FPGA 技術(shù)支持下的廣泛應(yīng)用，使現(xiàn)代化 設(shè)計(jì)計(jì)算已進(jìn)入一個(gè)全新的階段，從設(shè)計(jì)思想、設(shè)計(jì)工具一直到實(shí)現(xiàn)方式都發(fā)生了諸多變化。由于 FPGA 具有現(xiàn)場(chǎng)可編程功能，當(dāng)設(shè)計(jì)需要更改時(shí)，只需更改 FPGA中的控制和接口電路，利用 EDA 工具將更新后的設(shè)計(jì)下載到 FPGA 中即可，無(wú)需更改外部電路的設(shè)計(jì)，大大提高了設(shè)計(jì)的效率。目前使用的電子密碼鎖大部分是基于單片機(jī)技術(shù)，以單片機(jī)為主要器件，其編碼器與解碼器的生成為軟件方式。電子密碼鎖與普通機(jī)械鎖相比，具有許多獨(dú)特的優(yōu)點(diǎn)：保密性好，防盜性強(qiáng)，可以不用鑰匙，記住密碼即可開(kāi)鎖等。用 FPGA 器件構(gòu)造系統(tǒng)，所 有算法完全由硬件電路來(lái)實(shí)現(xiàn)，使得系統(tǒng)的工作可靠性大為提高。 關(guān)鍵詞： 電子密碼鎖； FPGA；硬件描述語(yǔ)言； EDA Abstract With the development of electronic technology, electronic password lock with burglar alarm and other functions replacing less password and poor security mechanical code lock is an inevitable trend. pared electronic password lock with ordinary mechanical locks, it has many unique advantages ： confidentiality, and security in nature, do not use the key, remember password can unlock it etc .Most electronic password locks we used now is based upon SCM technology ,SCM is its mainly device ,and the creating of encoding and decoding devices is the fashion of Software mode. In practical application, the reliability of the system may be worse because of easy running fly of the programme. This paper mainly expatiates a design method of electronic password lock based upon Field Programmable Gate Array device. We use FPGA devices to construct system , all of the algorithm entirely achieved by the hardware circuit , because of FPGA has the function of ISP , when the design needs to be changed We only need to change the control and interface circuit of FPGA,EDA tools are used to download the updated design to FPGA without changing the design of the external circuit , this greatly enhance the efficiency of the design .Therefore , we use FPGA to empolder the digital system has not only high reliability but also extremely convenient of upgrading and improvement .In this paper ,we use EDA technology , Quartus II platform and hardware description language designing an electronic password lock ,and it achieved through an FPGA chip. Key words： electronic password lock； FPGA； hardware description language； EDA I 目 錄 1 緒論 （標(biāo)題部分的格式很多不對(duì)，檢查修改） ......................................................... 1 本課題研究的國(guó)內(nèi)外現(xiàn)狀及其發(fā)展 .................................................................... 2 本課題研究的目的和意義 .................................................................................... 2 2 關(guān)鍵技術(shù)簡(jiǎn)介 ................................................................................................................... 4 FPGA 硬件設(shè)計(jì)描述 .............................................................................................. 4 FPGA 的設(shè)計(jì)流程 .................................................................................... 4 VHDL 語(yǔ)言的基本結(jié)構(gòu) ........................................................................... 6 自上而下（ TOP DOWN）的設(shè)計(jì)方法 .................................................. 7 設(shè)計(jì)語(yǔ)言、仿真平臺(tái)與開(kāi)發(fā)系統(tǒng) ........................................................................ 8 用 QuartusⅡ進(jìn)行系統(tǒng)開(kāi)發(fā)的設(shè)計(jì)流程 ............................................................... 8 3 系統(tǒng)總體設(shè)計(jì) ................................................................................................................... 9 電子密碼鎖設(shè)計(jì)的原理 ........................................................................................ 9 方案的提出 .......................................................................................................... 10 系統(tǒng)設(shè)計(jì)要求 ...................................................................................................... 11 系統(tǒng)設(shè)計(jì)描述 ...................................................................................................... 11 各功能模塊描述 .................................................................................................. 12 系統(tǒng)流程 ...........................................................................................