汽车低速测距报警与辅助制动系统设计

打开文本图片集

中图分类号：U463.6 文献标识码：A 文章编号：1003-8639（2025）06-0123-03

DesignofLow-speed RangingAlarmand Auxiliary BrakingSystemfor Automobiles

LuJunfengl，SongWei²，Sun Jian³

（1.Schoolof Mechanical andElectrical Engineering，JinlingInstituteof Technology，Nanjing，China; 2.Nanjing Iveco Automobile Co.，Ltd.，Nanjing ，China; 3.Nanjing Chuangyuan Power Technology Co.，Ltd.，Nanjing ，China）

【Abstract】Aiming at the problem that rear-end colisions are prone to occur when vehicles are following at low speeds，thispaperdesignsasystem integrating ranging alarmand auxiliary braking functionsbasedon theAT89C51 single-chip microcomputer.Bydeplyanalyzing theminimumsafe time modelofthevehicle during dynamic driving，the systemusesultrasonicdistancesensorsandvehicle speed sensors tocolectdatainreal time，combinedwith the environmentaltemperaturecompensationalgorithm，toaccuratelycalculatethevehicledistanceandtheminimumsafe time.When themeasuredvehicle speedand thedistance betweenvehicles fail tomeet theminimumsafety time requirements，thesystemwillimmediately triggeranaudibleandvisualalarm.Intheeventthat thedriverfailsto respond in time，the auxiliary braking program will be automatically initiated.

【Key Words】 low-speed ranging；auxiliary braking； single-chip microcomputer； error compensation

0 引言

随着城市化进程加快，交通拥堵已成为全球性问题。（剩余3095字）