Isimiso sokusebenza kanye namaphuzu okufaka i-radar ebuyela emuva
Igama eliphelele le-reversering radar lithi "reverser anti-collision radar", elibizwa nangokuthi "parking assistant device", noma "reverser computer warning system". Idivayisi ingahlulela ibanga lezithiyo futhi yeluleke ngesimo sezithiyo ezizungeze imoto ukuze kuthuthukiswe ukuphepha kokubuyela emuva.
Okokuqala, isimiso sokusebenza
I-radar yokubuyisela emuva iyithuluzi elisizayo lokuphepha lokupaka, elenziwe nge-sensor ye-ultrasonic (eyaziwa kakhulu ngokuthi i-probe), isilawuli kanye nesibonisi, i-alamu (uphondo noma i-buzzer) nezinye izingxenye, njengoba kuboniswe kuMfanekiso 1. I-sensor ye-Ultrasonic iyisici esiyinhloko sohlelo lonke lokubuyisela emuva. Umsebenzi wayo ukuthumela nokwamukela amagagasi e-ultrasonic. Isakhiwo sayo siboniswe kuMfanekiso 2. Njengamanje, imvamisa yokusebenza ye-probe esetshenziswa kakhulu engu-40kHz, 48kHz kanye no-58kHz izinhlobo ezintathu. Ngokuvamile, uma imvamisa iphakeme, kulapho ukuzwela kuphakeme khona, kodwa isiqondiso esivundlile nesiqondile sokutholwa kwe-Angle sincane, ngakho-ke ngokuvamile sebenzisa i-probe engu-40kHz
I-Astern radar isebenzisa isimiso sokuhlela i-ultrasonic. Uma imoto ifakwa egiyeni elibuyela emuva, i-reverse radar ingena ngokuzenzakalelayo esimweni sokusebenza. Ngaphansi kokulawulwa yisilawuli, i-probe efakwe kubhampa yangemuva ithumela amaza e-ultrasonic futhi ikhiqize amasignali e-echo lapho ihlangabezana nezithiyo. Ngemva kokuthola amasignali e-echo avela ku-sensor, isilawuli senza ukucubungula idatha, ngaleyo ndlela sibala ibanga phakathi komzimba wemoto nezithiyo futhi sahlulele indawo yezithiyo.
Ukuguqula umdwebo webhulokhi lokwakheka kwesekethe yeradar njengoba kuboniswe kumfanekiso 3, i-MCU (MicroprocessorControlUint) ngomklamo wohlelo oluhleliwe, lawula isekethe yokudlulisa i-analog switch drive ehambisanayo, izinzwa ze-ultrasonic ziyasebenza. Izimpawu ze-Ultrasonic echo zicutshungulwa ngokwamukela okukhethekile, ukuhlunga nokukhulisa amasekethe, bese kutholwa ngamachweba ayi-10 e-MCU. Lapho kwamukelwa isignali yengxenye ephelele yenzwa, uhlelo luthola ibanga eliseduze nge-algorithm ethile, bese lushayela isekethe ye-buzzer noma yokubonisa ukukhumbuza umshayeli ngebanga eliseduze lesithiyo kanye ne-azimuth.
Umsebenzi oyinhloko wesistimu ye-radar yokubuyela emuva ukusiza ukupaka, ukuphuma kugiya elibuyela emuva noma ukuyeka ukusebenza lapho isivinini sokuhamba sidlula isivinini esithile (ngokuvamile u-5km/h).
[Icebiso] Igagasi le-Ultrasonic libhekisela kugagasi lomsindo elidlula ububanzi bokuzwa kwabantu (ngaphezu kuka-20kHz). Linezici zokuvama okuphezulu, ukusabalala komugqa oqondile, ukuqondiswa okuhle, ukusabalala okuncane, ukungena okunamandla, isivinini sokusabalala esihamba kancane (cishe ama-340m/s) njalo njalo. Amagagasi e-Ultrasonic ahamba ngezinto eziqinile ezingacacile futhi angangena afinyelele ekujuleni kwamamitha angamashumi. Lapho i-ultrasonic ihlangana nokungcola noma izixhumanisi, izokhiqiza amagagasi abonakalisiwe, angasetshenziswa ukwakha ukutholwa kokujula noma ukujikeleza, futhi ngaleyo ndlela angenziwa abe uhlelo lokujikeleza.
