基于投影警示的智能汽車分級預警制動系統(tǒng)

打開文本圖片集

中圖分類號：U461.91 文獻標識碼：A DOI：10.3969/j.issn.1674-8484.2025.03.006

Abstract：In order to improve theactivesafety performanceof vehiclesand reduce the numberof humanand vehicle colisions in the scene of blindarea occlusion，anautonomous vehicle hierarchicalearly-warning braking systemwas proposed based on intellgent projection，focusing on therisk warning of smart carand pedestrian accidents.The hierarchical control strategywasused tomodel the braking system.Theupper controller was a safetydecision-making method for graded warning and braking systems，which explored the safe speed n the blind area through the changeof the moving position of the vehicle and the pedestrian.The first stage braking was carried outaccording to the comparison between thesafe speed in the blind areaand thecurent speed， and the secondstagebraking wascaried out when there wasacollsion risk with thepedestrian.The lower actuatorestablishedthe inverse longitudinal dynamicsmodelof thevehicle，and the throtleopening model andbrake pressure control model of the vehiclewere established according to the expected deceleration speed outputof theupper controller，soas to maintain ordecelerate the current speed.At thesame time，the systemused theroad projection technologyof smartcars toproject warning informationon the ground ahead， andcarriedout information interactionwith pedestrians.Thesafetyand feasibilityof this systemwere verified bytaking the traditional classic MAZDA modelas thereferencemodel.After1260simulations，it was found thatthe hierarchical early-warning braking systemdidnotavoid14accidents.Fortheunavoidablecases，336 deep pedestrian interaction simulations were further conducted to simulate the real reactions of pedestrians afterseeing theprojected warnings.Theresultsshow that within the normal reaction capacityof pedestrians， the hierarchical early-warning braking system canavoid allaccident cases.The research results canprovide support forthe research of automatic emergency braking system to protect pedestrian safety and promote its practical application.

Keywords：inteligent vehicle;automativesafety;stage warning brake system; blind speed; road projection

世界衛(wèi)生組織（WorldHealth Organization，WHO）統(tǒng)計，每年全球因道路交通事故死亡人數(shù)約為135萬，其中行人占比達 23% [1]。（剩余14086字）