汽车倒车防撞的AT89S52微控制报警系统及有关概要.pdf

Mar．2015 HydromechatronicsEngineering Vo1．43 No．6 HydromechatronicsEngineering http：／／jdy．qks．cqut．edu．cfl E-mail：jdygcyw@126．com Designofcarreverseanti-c·ollisionwarning system basedonAT89S52 Yang．shanTANGr Li．naGE ，Dao—huaXIA ，Pei—feiYANG ， (AutomobileTransportationCollege．Li~oningUniversityofTechnology，Jinzhou121001，China) (。ZhongDingCnshionTechnologiesCompanyLimitedinAnhuiProvince，Anhui242300，China) Abstract：Inordertoreducethecarscrapingcollisionaccidentscausedbybad “rearview”whenreversing，acar reverseanti．collisionwarningsystem isdesigned．Thissystem takesAT89S52singlechipasthemaincontrolunit， anditadoptstheHC．SR04ultrasonicrangingmoduletorealizethenon—contactdistancemeasurement．Ontheba— sis0fmatchingthehardware，wedesignedthecircuitandsoftware，andcarriedoutthetestexperiment，analyzed therangingermr．Thissystem detectionrangecanbe2～400cm，rangingaccuracyisupto3mm，andltcansat— isfytherequirementoftheearlywarningofacarwhenreversinginthena~ow space． Keywords：Microcontroller，Anti—collisionwarningsystem ，Ultrasonic doi：10．3969／j．issn．1o01-3881．2015．06．O07 Documentcode：A CLCnumber：I』461．91 gerreaction time，and they also have difficulty in 1Introduction helpingthedriverstopsafetyeffectivelywithinasmall space· Inrecentyears，withtherapiddevelopmentofauto— Inviewoftheabove—mentionedfacts，anew typeof mobile industry and the continuous improvementof carreversing anti-collisionwarningsystem which has people’slivingstandard，theamountofautomobiles widerdetectionrangeandhighermeasuringprecision increasesrapidlyinourcountry．whichcausedpublic wasdesignedi