基于点阵LCD的汽车仪表设计.doc

基于点阵LCD的汽车仪表设计

摘要

随着汽车发展迅速，汽车仪表盘是反映车辆各系统工作状况的装置，本文主要对点阵LCD的汽车仪表盘进行研究。点阵式LCD仪表盘，大方美观，另驾驶员清晰易懂，有良好的人机界面，在听觉视觉上也给驾驶员很大的帮助及可操作性，是目前国内汽车发展研究的重要核心。目前在国内LCD仪表盘已经进入大多数中端汽车行列，并且其优势的稳定性好，抗干扰能力强，可靠性高，人们对这三大优势尤为重视。

本文将根据现今市面上中端汽车，从整体的系统框架到微处理器以及软硬件的选择和CAN总线的程序设计，分析了LCD汽车仪表显示基本原理及CAN总线通信原理，从而做出仪表器件的选择，进一步设计仪表硬件，根据硬件组成及所需功能在开发环境CodeWarrior下设计软件功能程序，实现了车速里程的集中控制,从而大大简化了系统设计。总体来说，本设计研制推动了微处理器在汽车仪表行业中的应用速度，同时该产品同时该产品具有很好的市场竞争力和广阔的应用前景。

关键词汽车仪表；点阵LCD；CAN总线

BasedonthelatticeLCDcarinstrumentdesign

Abstract

Ascarhasdevelopedrapidly,thecardashboardistoreflectthestatusofvarioussystemsofthevehicleunit,thispapermainlystudyofdotmatrixLCDcardashboard.DotmatrixLCDpanel,beautifulgenerous,theotherdriverisclearandeasytounderstand,goodman-machineinterface,alsoofgreathelptothedriveronaudiovisualandmaneuverability,isanimportantcoreofthecurrentdomesticautomobiledevelopmentresearch.LCDpanelindomestichasenteredthemostcarlineintheend,andtheadvantagesofgoodstability,stronganti-jammingcapability,highreliability,especiallyattachesgreatimportancetothepeopleofthethreemajoradvantage.

Thisarticleaccordingtothecurrenthighendcarmarket,fromtheoverallsystemframeworktomicroprocessorprogramdesignandthechoiceofhardwareandsoftwareandCANbus,analysisthebasicprincipleofLCDautoinstrumentdisplayandCANbuscommunicationprinciple,instrumentdeviceofchoicetomake,furtherinstrumenthardwaredesign,accordingtothehardwarecompositionandthefunctioninthedevelopmentenvironmentCodeWarriorprogramdesignsoftwarefunctions,realizesthecentralizedcontrolofthespeedofthecarmileage,whichgreatlysimplifiesthesystemdesign.Ingeneral,thedesigndevelopmenttopromotetheapplicationofmicroprocessorinautomotiveindustryinstrumentspeed,atthesametimetheproductatthesametime,theproducthasgoodmarketcompetitivenessandbroadapplication