Umgomo wokusebenza kanye namaphoyinti wokufaka we-radar ehlehlayo
Igama eligcwele le-radar ehlehlayo "ukuhlehlisa i-radar ephikisana nokushayisana", okubuye kubizwe ngokuthi "idivayisi yokusiza yokupaka", noma "ukuhlehlisa uhlelo lokuxwayisa lwekhompyutha". 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.
