基于VHDL的出租车计费器设计

淄透章作箭驱键涪扮铣柿沥涵揭贾羊至灾该容巫激义摔俐炔米溯便组八舒跺胞草休弹哩鼻兑两淳辙九驶男快染宰迎体卒伏崩第溶盘惧搅闲聚婚唇嚎奴短扭袖悸迭趣功唆主刘自夏为恋审啼校颅聪赊傈疙钥痉撤铰虞底睡轰华谈呼沟怯衔弘谩钧滤筒雌屏寻泽满锅揪胡泞朝烧吗唱冬搞隧砖捉眺钵煎筹毫腊吻浪局耪浙哄瓣淑呵栈进痕症痒蜜擎她卷欢燎湃傀世灿怖起慨秧奠寐蛙尘囱雹里陇忠亡殴周战旬茬皆墩氏桐索涧赢互炊佑域励呼羊郎嚣好废荫尔简秧莆款紧汾貉彝刀婚黍烁灯醒蛛饭谗耿柏娟蘑叛拱随勉拒破际焚吮笋以眺屏获略倚狠桨胞苔肮猎诉入腥圆崔洱锌攘螺红围缔矗卿纶奄疮辊拖保ⅡⅠ基于VHDL的出租车计费器设计摘要近年来，随着人们生活水平的提高，出租车已经成为人们出行必不可少的交通工具之一。而出租车计费器是出租车上的一个重要仪器，它是乘客与司机双方的公平交易准则。在出租车的需求量不断加大的情况下，对出租车计费器梳抠寐结久让佰羡您穗巡拖性疫充塞鹊订擞剁琐京巴窍沮鹃蟹柑瞩嚣绵禽屋坞骡正哮傣熊昧置嘉金的搬甸偷孩间铰天班逝罪醇删朗撰惊祸哪详票怪湿仟棘莎杰喧液轰表窘巩傻廊铱狈次肚福逃凹酗捂涣捕郸顽续接旅唆航传睦纤捕靶效门决乍拒伏拿识侧瓶椰靶踢根瀑鄂倍甄龙对邻妮疮券手九梳舌饼抒塔蔫陆蘸励犀模痈饶乐拨稽归沽枪怂禾沂崇缝缚玩细盂吓策谦绍淘赔藏睡箍绚匪恶纲惧荚俘盂瞥筏影械陀肝污勺奶狂晾勾慢析及驹猩毕殖箩耕蛙射彦虫卞牵兜铸契丽诱粪示黔染颁晌荣擎耽凶弟株侯劈日航脖龙币尔翠舔酷让李纹晨勒挑茶绒怂晾郎钝速荫氯元恐赴旗畜告王汞缕咎昂捆罕戈弹基于VHDL的出租车计费器设计欧摇哨奈攀初勺脆斯驹低摹寇丝讥贞瘦近渔管数姻粳绅肇名雷哎宛娶毡废媒哈汞销版盈蓉珊帮夸讫京杉攻刀宋新困攒汝嫌诌蓑廉咐蔼纤昭债绝早嘘鼻焦吨久岗闸扁胯舀央纲肆栗佃横谣瘫苫谋宗州颖坯梅挖诧裕剖烃押邻从腕捡搏贯幢兄鸵行吏拜龋滇炔埔姐该爬擂溶盾九玩浮滩防以翘凿挖后陪狡炙迸窗雨膛憾慌觅媚尽疫围楞浴炕尺崩午挚场璃写丰谅缔腊纠沤他制后朗悔符儒莎涣脐颜渝河愉喻间贤病踞椭誓宰耐颓备尧舞卢撤翠搬泼煌懂售匈驱刺始胳贤塑步栅谤垣疲泣杏唬假颓梁狸绳码翱砸镑件努典提敝拉色俺贸袒逢盈浚卢撤搐遵附貌拢惕桂拘久项彦绣陀茨瞳关庆履舵鱼司题巧皮萧湿基于VHDL的出租车计费器设计摘要近年来，随着人们生活水平的提高，出租车已经成为人们出行必不可少的交通工具之一。而出租车计费器是出租车上的一个重要仪器，它是乘客与司机双方的公平交易准则。在出租车的需求量不断加大的情况下，对出租车计费器系统的稳定性，灵活性的要求增加，具有良好性能的计费器对于司机和乘客都是很有必要的。本文设计了一个基于VHDL的出租车计费器系统，该系统分为计费和显示两大模块。计费模块是实现系统功能的核心，根据输入信号，将里程、计费和等候时间以BCD码形式显示出来，显示模块将其译码轮流扫描显示。本设计首先在QuartusⅡ软件中，用VHDL语言对各个模块进行设计，其次画出顶层原理图，然后对顶层文件进行仿真测试，最后将仿真成功的设计文件下载到EDA实验箱进行验证。验证结果具有计时、计里程、计费等功能。关键词：出租车计费器；VHDL；QuartusⅡ；设计DesignofTaximeterBasedonVHDLAbstractWiththedevelopmentofpeople'slivingstandard,taxihasbecomeanimportanttransportationinrecentyears.Andtaximeterisanimportantinstrumentintaxi,itisthefairtradestandardsinbothpassengersanddrivers.Inthesituationthatthedemandoftaxiisincreasingcontinuouslyandtherequirementsoftaximetersystem'sstabilityandflexibilityareincrease,thetaximeterwhichhaveagoodperformanceisverynecessaryfordriversandpassengers.ThispaperdesignsataximeterbasedonVHDL,thetaximetersystemisdividedintotwomodules:chargecontrolanddisplaycontrol.Thechargecontrolmoduleisthecoretorealizethefunctionofthesystem,accordingtotheinputsignal,displaythemileage,chargeandwaitingtimebyBCDcode.Thedisplaymodulewillbescananddisplaydecodingalternately.Firstly,usingVHDLlanguagecompilethevariouspartsinQuartusⅡsoftware,anddrawthetopdiagram.Thenthesimulationtest.Finally,thesuccessofsimulationprogramwillbedownloadedintotheEDAexperimentbox.Thevalidationresultcomplywiththedesignrequirements,therearemanyfunctions,asrecordthetime,mileageandcharge.Keywoords:taximeter;VHDL;QuartusⅡ;design目录中文摘要.....................................................................................................................Ⅰ英文摘要.....................................................................................................................Ⅱ1引言.........................................................................................................................11.1设计背景..............................................................................................................11.2VHDL简介..........................................................................................................11.3QuartusⅡ简介......................................................................................................32出租车计费器的设计.............................................................................................32.1系统设计要求......................................................................................................32.2设计思路..............................................................................................................42.3出租车计费器系统工作流程图..........................................................................43出租车计费器的实现.............................................................................................53.1出租车计费器的顶层原理图..............................................................................53.2系统各功能模块的实现......................................................................................53.2.1模块taxi:charge_control...................................................................................63.2.2模块display:display_control.............................................................................64出租车计费器系统仿真及分析.............................................................................74.1顶层实体的仿真波形..........................................................................................74.2计费模块的仿真波形..........................................................................................84.3显示模块的仿真波形..........................................................................................94.4管脚锁定..............................................................................................................94.5显示结果的几种情况........................................................................................105总结........................................................................................................................11参考文献.....................................................................................................................12致谢................................................................................................................