单片机超声波测距仪 外文翻译 外文文献 英文文献道

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1、外文原文原文出处：传感器文摘布拉福德:1993年第13页UltrasonicrangingsystemdesignPublicationtitle:SensorReview.Bradford:1993.Vol.13ABSTRACT：Ultrasonicrangingtechnologyhaswideusingworthinmanyfields，suchastheindustriallocale，vehiclenavigationandsonarengineering．Nowithasbeenusedi

2、nlevelmeasurement，self-guidedautonomousvehiclesfieldworkrobotsautomotivenavigation，airandunderwatertargetdetection，identification，Solocationandsoon．thereisanimportantpracticingmeaningtolearntherangingtheoryandwaysdeeply.Toimprovetheprecisionoftheultraso

3、nicrangingsysteminhand，satisfytherequestoftheengineeringpersonnelfortherangingprecision，theboundandtheusage，aportableultrasonicrangingsystembasedonthesinglechipprocessorwasdeveloped．Keywords：Ultrasoundr，RangingSystem，SingleChipProcessor1.IntroductiveWit

4、hthedevelopmentofscienceandtechnologytheimprovementofpeoplesstandardoflivingspeedingupthedevelopmentandconstructionofthecity.urbandrainagesystemhavegreatlydevelopedtheirsituationisconstantlyimproving.Howeverduetohistoricalreasonsmanyunpredictablefactors

5、inthesynthesisofhertimethecitydrainagesystem.Inparticulardrainagesystemoftenlagsbehindurbanconstruction.Thereforethereareoftengoodbuildingexcavationhasbeenbuildingfacilitiestoupgradethedrainagesystemphenomenon.Itbroughttothecitysewageanditiscleartotheci

6、tysewageanddrainageculvertinthesewagetreatmentsystem.comfortisveryimportanttopeopleslives.MobilerobotsdesignedtoclearthedrainageculvertandtheautomaticcontrolsystemFreesewageculvertclearguaranteerobottherobotisdesignedtocleartheculvertsewagetothecore.Con

7、trolSystemisthecorecomponentofthedevelopmentofultrasonicrangefinder.Thereforeitisveryimportanttodesignagoodultrasonicrangefinder.2.Aprincipleofultrasonicdistancemeasurement2.1TheprincipleofpiezoelectricultrasonicgeneratorPiezoelectricultrasonicgenerator

8、istheuseofpiezoelectriccrystalresonatorstowork.Ultrasonicgeneratortheinternalstructureasshownithastwopiezoelectricchipandaresonanceplate.Whenitstwopluspulsesignalthefrequencyequaltotheintrinsicpiezoelectricoscillationfrequencychi