基于fpga的出租车计费器设计.doc

. . PAGE 51 论文题目：基于FPGA的出租车计费器设计 专 业：微电子学 本 科 生： （签名）___________ 指导教师：岳改丽 （签名）___________ 摘 要 论文阐述了EDA的概念和发展、VHDL语言的优点和语法结构，并分析了出租车计费器的各模块的功能要求、基本原理以及实现方法。本系统的设计采用VHDL硬件描述语言编程，基于Quartus II平台进行编译和仿真。论文介绍了一种采用FPGA芯片设计出租车计费器的方法，阐述了该计费器的主要组成单元——车轮大小选择模块、计程模块、计时模块及计费模块、数据分配模块、分频模块、译码模块的设计方法，同时给出了详细的仿真波形，实现了出租车按行驶里程自主收费，还能模拟汽车启动，停止，暂停等状态，同时提高了计费系统的可靠性、通用性。本设计在FPGA试验箱上运行良好，实现了计费器的各项功能。 关键字 FPGA，VHDL，Quartus II，出租车计费器 Subject: The taxi meter based on FPGA design Specialty: Microeletronics Name: Yuan Wang (Signature) ___________ Instructor: Gaili Yue (Signature) ___________ ABSTRACT This article elaborates the concept and development of EDA ,explains the advantages and grammar structure of VHDL ,meanwhile, analysed the function request, the basic principle as well as the method of accomplishment of each parts. This systems design programmes in the VHDL, compiled and emulated basing on Quartus II platform of Altera consists of four modules,that is speed,mileage,timing and billing module. This paper introduce one method that can use a chip of FPGA to design taxi meter,which consists of four modules,that is speed,mileage,timing and billing module,and then, describe the design of each module and give out the simulation. This taxi meter can be self-charging according to mileage，which also can simulate the state of speed,such as start,stop,and pause,at the same time, its reliability and commonality also can be improved. This design FPGA test box on running well, realize the different functions of the message accounting device. KEY WORDS FPGA ,VHDL ,Quartus II ,The taxi meter 目 录 HYPERLINK \l _Toc18166 第1章 绪 论 PAGEREF _Toc18166 1TOC \o 1-3 \h \u HYPERLINK \l _Toc15439 1.1课题研究背景及目的 PAGEREF _Toc15439 1 HYPERLINK \l _Toc9516 1.2 课题的研究现状 PAGEREF _Toc9516 2 HYPERLINK \l _Toc16267 1.3 课题研究方法 PAGEREF _Toc1626