Umgomo wokusebenza kanye namaphoyinti wokufaka we-radar ehlehlayo
Igama eligcwele le-radar ehlehlayo "ukuhlehlisa i-radar ephikisana nokushayisana", ebizwa nangokuthi "idivayisi yokusiza yokupaka", noma "ukuhlehlisa uhlelo lokuxwayisa lwekhompuyutha".Idivayisi ingahlulela ibanga lezithiyo futhi yeluleke isimo sezithiyo ezizungeze imoto ukuze kuthuthukiswe ukuphepha kokuhlehla.
Okokuqala, isimiso sokusebenza
I-radar ehlehliswayo iyinsiza yokuphepha yokupaka, eyakhiwe inzwa ye-ultrasonic (evame ukubizwa ngokuthi i-probe), isilawuli nesibonisi, i-alamu (uphondo noma i-buzzer) nezinye izingxenye, njengoba kuboniswe kuMfanekiso 1. Inzwa ye-Ultrasonic iyingxenye eyinhloko ye lonke uhlelo lokuhlehla.Umsebenzi wayo ukuthumela nokwamukela amagagasi e-ultrasonic.Ukwakheka kwayo kuboniswe kuMfanekiso 2. Njengamanje, imvamisa yokusebenza ye-probe evame ukusetshenziswa engu-40kHz, 48kHz kanye no-58kHz izinhlobo ezintathu.Ngokuvamile, ukuphakama kwefrikhwensi, ukuzwela kuyanda, kodwa indlela evundlile neqondile ye-Engeli yokuthola incane, ngakho-ke ngokuvamile sebenzisa i-40kHz probe.
I-radar ye-Astern isebenzisa isimiso sokulinganisa se-ultrasonic.Uma imoto ifakwa egiyeni lokuhlehla, i-radar ehlehlayo ingena ngokuzenzakalelayo endaweni yokusebenza.Ngaphansi kokulawula kwesilawuli, i-probe efakwe kubhampa wangemuva ithumela amagagasi e-ultrasonic futhi ikhiqize amasignali e-echo lapho ihlangabezana nezithiyo.Ngemva kokuthola amasignali e-echo kusuka kunzwa, isilawuli senza ukucubungula idatha, ngaleyo ndlela sibale ibanga phakathi komzimba wemoto nezithiyo futhi sahlulele indawo yezithiyo.
Ihlehlisa umdwebo webhulokhi yesifunda se-radar njengoba kukhonjisiwe kumfanekiso wesi-3, i-MCU (MicroprocessorControlUint) ngomklamo wohlelo oluhleliwe, lawula isekethe ehambisanayo ye-electronic analog switch drive transmission, izinzwa ze-ultrasonic ziyasebenza.Izimpawu ze-Ultrasonic echo zicutshungulwa ngamasekhethi akhethekile owamukelayo, okuhlunga kanye nokukhulisa, bese atholwa amachweba ayi-10 e-MCU.Lapho ithola isignali yengxenye egcwele yenzwa, isistimu ithola ibanga eliseduze ngokusebenzisa i-algorithm ethile, futhi ishayela i-buzzer noma isifunda sokubonisa ukukhumbuza umshayeli webanga eliseduze lesithiyo kanye ne-azimuth.
Umsebenzi oyinhloko wesistimu ye-radar ehlehlayo ukusiza ukupaka, ukuphuma egiyeni elibuyela emuva noma ukuyeka ukusebenza lapho isivinini esihambayo esihlobene sidlula isivinini esithile (ngokuvamile u-5km/h).
[Ithiphu] I-Ultrasonic wave isho igagasi lomsindo elidlula ububanzi bokuzwa komuntu (ngaphezulu kuka-20kHz).Inezici zokuvama okuphezulu, ukusakazeka komugqa oqondile, ukuqondisa okuhle, ukuphazamiseka okuncane, ukungena okuqinile, isivinini sokusabalalisa kancane (cishe 340m / s) njalonjalo.Amagagasi e-Ultrasonic ahamba ezintweni eziqinile ezingacacile futhi angangena ekujuleni kwamashumi amamitha.Lapho i-ultrasonic ihlangana nokungcola noma i-interfaces, izokhiqiza amagagasi abonisiwe, angasetshenziswa ukwakha ukujula kokubona noma ukuhluka, futhi ngaleyo ndlela angenziwa ohlelweni oluhlukahlukene.
