声音引导系统设计和实现 电子信息工程专业VIP免费

声音引导系统设计和实现电子信息工程专业目录摘要·····························································3Abstract························································3一、系统方案···················································41、整体方案的论证与比较·······································42、系统控制方案···············································4二、设计与论证·················································51、误差信号理论分析···········································52、理论分析···················································5三、单元电路的设计············································61、系统组成···················································62、声音发射模块的设计·········································63、声音接收模块的设计·········································74、无线收发模块的设计·········································95、电机驱动电路的设计·········································96、液晶显示模块的设计·········································10四、系统测试··················································111、使用的仪器和设备··········································112、测试的方法和步骤··········································11参考文献························································12附录(原件清单、电路图、程序)·····································13摘要本文采用基于STC89C52单片机的声音引导系统，由单片机产生周期性音频脉冲信号，通过LM386N功率放大器进行放大后驱动喇叭；声源接收模块采用驻极体话筒作为声电转换元件，将声音信号转化成电信号。通过单片机来判断声源的位置，由PT226编码芯片以及PT2272解码芯片组成的集成电路实现信号的无线传输，以实现控制小车的运动。由单片机来控制全桥驱动芯片L298N驱动直流减速电机的转速和转向。关键字：声音引导、功率放大器、声电转换、无线编码/解码、全桥驱动AbstractThispaperbasedonSTC89C52SCMvoiceguidesystem,thesingle-chipcomputerproduceperiodicaudiopulsesignal,throughtheLM386Npoweramplifieramplificationdrivespeakerafter;ReceivingmoduleUSESsoundinabodymicrophoneaselectricconversioncomponents,willsoundvoicesignalintoelectricalsignals.Throughthesingle-chipmicrocomputertojudgethepositionofthesoundsource,thePT226codinganddecodingchipschipPT2272composedofintegratedcircuitrealizesignalofwirelesstransmission,soastorealizethecontrolofthesportscar.Thesingle-chipcomputertocontrolthewholebridgeL298Ndriverdrivechipdcslowmotorspeedandsteering.Keyword:Voiceguide,Poweramplifiers,Soundelectricconversion,Wirelessencoding/d...