基于Stm32开发板的智能玩具小车的设计与实现.doc

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摘要

摘要：随着当今时代的科学技术的发展，计算机技术也迎来了高速发展时期。在嵌入式领域，各种各样的智能设备和生活家居出现，都说明了我们正朝着物联网的时代前进。嵌入式技术的使用遍布生活中的方方面面，我想把嵌入式技术应用到玩具小车上面，让传统的玩具也可以变得智能，变得更加有趣味性。

智能玩具小车以STM32作为核心开发板，应用了PWM脉宽调制技术、红外遥控技术、智能循迹技术以及超声波避障技术，使用到的关键硬件有L293D芯片、红外信号接收器、ST188红外光电传感器、舵机云台以及超声波传感器。小车主要有驱动行驶模块、红外遥控模块、智能循迹模块和超声波摇头避障模块。智能小车基本实现三大运动效果，第一是通过红外遥控器控制小车前进后退等运动。第二是小车可以在黑色轨迹上循迹行驶，自己根据黑色轨迹转弯和前进。第三是小车遇到障碍物时，通过超声波确定与障碍物的距离，并通过超声波寻找没有障碍物的安全路线。

关键词：STM32、PWM技术、L293D芯片、超声波传感器

Abstract

Abstract：Withthedevelopmentofscienceandtechnologyintoday’sera,computertechnologyhasalsousheredinaperiodofrapiddevelopment.Intheembeddedfied,avarietyofsmartdevicesandhomefurnishingsshowthatwearemovingtowardstheeraoftheinternetofthings.Embeddedtecnologyiswidelyusedinallaspectsoflife.Iwanttoapplyembeddedtechnologytotoycars,sothattraditionaltoyscanbecomemoreintelligentandinteresting.

TheintelligenttoycartakesSTM32asthecoredevelopmentboard,andusesPWMtechnology,infraredremotecontroltechnology,intelligenttrackingtechnologyandultrasonicobstacleavoidancetechnilogy.ThekeyhardwareusedincludesL293Dchip,infraredsignalreceiver,ST188infraredphotoelectricsensor,steeringenginecloudplatformandultrasonicsensor.Thecarmainlyincludesdrivingmodule,infraredremotecontrolmodule,intelligenttrackingmoduleandultrasonicshakingheadobstacleavoidancemodule.Thecarmainlyincludesdrivingmodule,infraredremotecontrolmodule,intelligenttrackingmoduleandultrasonicshakingheadobstacleavoidancemodule.Thefirstistocontrolthecarforwardandbackwardbyinfraredremotecontrol.Thesecondisthatthecarcanfollowtheblacktrack,turningandmovingaccordingtotheblacktrack.Thirdly,whenthecarencountersobstacles,thedistancebetweenthecarandtheobstaclesisdeterminedbyultrasound,andthesaferoutewithoutobstaclesisfoundbyultrasound.

Keywords：STM32,PWMtechnology,L293Dchip,