数字超声波倒车测距仪设计摘要为了帮助汽车驾驶员实现安全倒车的目的，根据超声波测距的工作原理，采用51单片机系统及超传感器为硬件核心，声波采用单片机C语言编写程序，设计出一套具有实时超声波速度修正及可多方位进行检测扫描的超声波测距系统。实现汽车在倒车过程中一旦接近有障碍物时，立刻自动报警并显示出汽车尾部到障碍物距离的功能。关键词：数字超声波；测距仪；倒车AbstractInordertohelpthecardriverachievethepurposeofsafereversing,accordingtotheworkingprincipleofultrasonicranging,51single-chipsystemandsupersensorareusedasthehardwarecore,andthesoundwaveisprogrammedbythesingle-chipClanguage,andasetofreal-timeultrasonicspeedcorrectionanddesigncanbedesigned.Ultrasonicrangingsystemfordetectingscanninginazimuth.Whenthecarisapproachinganobstacleduringthereversingprocess,itimmediatelyalarmsanddisplaysthefunctionoftherearendofthecartotheobstacle.Keywords:digitalultrasonic;rangefinder;reversing目录....................................................................................................................2.........................................................................................................3....................................................................................................3........................................................................4................................................................................................4....................................................................................5....................................................................................7............................................................................7............................................................................8....................................................................................................9..........................................................................................10.........................................................................................................10.......................................................................................................11.......................................................................................................11..............................................................................................................12............................................................................................................13........................................................................................13................................................................................13....................................................................14..................................................................................14......................................................................................................15................................................................................16....................................................................16......................................................................................17....................................................................................................19......................................................................................................................19第一...
