基于VHDL语言的出租车计费系统的设计讲述.doc

基于VHDL语言的出租车计费系统的设计 摘 要 本文通过对VHDL的初步学习并掌握了其基本知识后，以FPGA做主控芯片来实现基于VHDL语言的出租车计费的目的。 基于出租车行业的需求，传统的出租车计费器发展使用了十几年，在稳定性、成本、以及使用习惯上都具有一些优势。本系统由和一些外围器件组成，具有操作简单，显示明了，功能强大的特点。使用1602液晶模组作为显示器，可以显示数字、字母、中文、图片等，使系统信息一目了然。本方案充分发挥人性化的特点。本系统涉及到的理论知识有：知识、LCD液晶显示器的工作原理和使用方法，出租车计费系统的原理和实现方法等等。 1602液晶模组； TAXI BILLING BASED ON VHDL ABSTRACT Based on FPGA preliminary study and master its basics, in order to achieve the controlling chip FPGA based on VHDL taxi billing purposes. Based on the taxi industry demand, the traditional taxi meter development using ten years, in stability, cost, and the use of custom has some advantages. The system consists of single-chip FPGA and some peripheral devices, has the advantages of simple operation, display clear, powerful features. The use of 1602 LCD module as the display, can display numbers, letters, Chinese, pictures, make the system message stick out a mile. The proposal to give full play to the characteristics of human nature. The system relates to the theory of knowledge: VHDL, LCD liquid crystal display work principle and using method of billing system of a taxi, the principle and the realization method. Key words: 1602 LCD module；FPGA；VHDL 目 录 1 前言--------------------------------------------------------------------------------------1 2系统设计 2.1 总体设计---------------------------------------------------------------------2 2.2出租车计价器存在的问题------------------------------------------------------2 2.3问题的修改------------------------------------------------------------------------3 2.4 设计要求--------------------------------------------------------------------------- 3 硬件部分 3.1 FPGA简介----------------------------------------------------------------------------------------------------------------------------------------------------4 3.3 LCD的简介-----------------------------------------------------------------------5 4 软件部分 4.1 VHDL语言的介绍----------------------------------------------------------------7 4.2 VHDL语言的特点