智能轮椅语音导航控制系统的设计

智能轮椅语音导航控制系统的设计摘要语音识别技术是使机器通过识别和理解把语音转变为相应的文本或命令的技术。语音识别是一门交叉学科，正逐步成为信息技术中人机接口的关键技术。目前语音识别系统按核心硬件来分主要有：以PC机为核心硬件的语音识别系统和以专用芯片为核心的语音识别系统。本课题主要阐述了一种非常适合语音处理的单片机——凌阳SPCE061A的原理，并实现了基于凌阳SPCE061A单片机的语音控制轮椅。本文主要工作包括，首先介绍了语音识别基础知识以及常用的语音识别算法，然后根据嵌入式系统的特点和本课题所要求实现的具体功能，给出了基于凌阳SPCE061A单片机的语音控制轮椅系统硬件和软件设计的总体方案。此系统不仅具有体积小、耗电省、价格低、性能可靠的特点，还具有较快的运算速度、较高的识别率，可实现实时的语音识别。本系统的语音提示功能为人机交流提供了一个良好的界面。关键词:轮椅机器人,语音识别,SPCEO61AABSTRACTThespeechrecognitiontechnologyisahightechnology,whichmakethemachinechangethespeechintohomologoustextororderbyrecognitionandcomprehend.Thespeechrecognitionisacross-subject,anditisbecomingthekey-technologyofhuman-computerinterfaceininformationtechnology.Atpresent,accordingtothedifferenceofhardwarecore,thespeechrecognitionsystemincludes:thespeechrecognitionsystemusingPCasitsharewarecoreandthespeechrecognitionsystemusingspecialchip.Thearticleintroducesamicrocontrollerwhichfitstoprocessingspeech--SUNPLUSSPCE061Amicrochipanditsprinciple,achievethespeechcontrolingwheelchairbasedonSPCE061A.Themainworkofthispaperincludes,firstlyintroducedthebasicknowledgeofspeechrecognitionandspeechrecognitionalgorithm,thenaccordingtothespecificfeaturesoftheembeddedsystemandtheimplementationrequirements,presentstheoverallschemeofwheelchairsystemhardwareandsoftwaredesignofthecontrolvoiceSunplusbasedonSPCE061Asinglechipmicrocomputer.Thissystemnotonlyhastheadvantagesofsmallvolume,lowpowerconsumption,lowcost,reliableperformance,recognitionbutalsohashighoperationspeed,highefficiency,canrealizethereal-timespeechrecognition.Thespeechthesystempromptfunctionprovidesagoodinterfaceforhuman-computerinteraction.Keywords:wheelchairrobot,speechrecognition,SPCEO61A