Nheyo yekushanda uye nzvimbo dzekuisa radar yekudzosera kumashure
Zita rakazara reradar yekudzosera kumashure inonzi "reversing anti-collision radar", inonziwo "parking axidative device", kana kuti "reversing computer warning system". Mudziyo uyu unogona kuona daro rezvipingamupinyi uye kupa mazano emamiriro ezvinhu ezvipingamupinyi zvakatenderedza mota kuti uvandudze kuchengetedzeka kwekudzosera kumashure.
Chekutanga, musimboti wekushanda
Radar yekudzosera kumashure mudziyo wekuchengetedza wekupaka, unoumbwa ne sensor ye ultrasonic (inozivikanwa se probe), controller ne display, alarm (horn kana buzzer) nezvimwe zvikamu, sezvakaratidzwa muMufananidzo 1. Ultrasonic sensor ndiyo chikamu chikuru che reverser system yese. Basa rayo nderekutumira nekugamuchira mafungu e ultrasonic. Maumbirwo ayo anoratidzwa muMufananidzo 2. Parizvino, probe inoshandiswa kazhinji ye40kHz, 48kHz uye 58kHz mhando nhatu. Kazhinji, kana frequency yakakwira, kunzwa kwakakwira, asi nzira yakatwasuka uye yakatwasuka yekuona Angle idiki, saka kazhinji shandisa probe ye40kHz.
Radar yeAstern inoshandisa nzira yekushandura mafambiro emota. Kana mota ikaiswa mugiya rekumashure, radar yekudzosera kumashure inopinda otomatiki mumamiriro ekushanda. Pasi pekutungamirirwa kwemutongi, probe yakaiswa pabhampa rekumashure inotumira mafungu eultrasonic uye inogadzira masaini e echo kana yasangana nezvipingamupinyi. Mushure mekugamuchira masaini e echo kubva ku sensor, mutongi anoita basa rekugadzirisa data, nokudaro achiverenga daro riri pakati pemuviri wemotokari nezvipingamupinyi uye achitonga nzvimbo yezvipingamupinyi.
Kudzosera dhayagiramu ye radar circuit composition block sezvakaratidzwa pamufananidzo 3, MCU (MicroprocessorControlUint) kuburikidza nehurongwa hwepurogiramu yakarongwa, kudzora circuit yemagetsi yeanalog switch drive inoenderana, ma ultrasonic sensors anoshanda. Ma ultrasound echo signals anogadziriswa ne special receiving, filtering uye amplifier circuits, uye ozoonekwa nema ports gumi eMCU. Pakugamuchira chiratidzo chechikamu chose che sensor, system inowana daro riri pedyo kuburikidza ne algorithm chaiyo, uye inotyaira buzzer kana display circuit kuti iyeuchidze mutyairi nezve daro riri pedyo nechipingamupinyi uye azimuth.
Basa guru re reverse radar system nderekubatsira kupaka mota, kubuda mu reverse gear kana kumira kushanda kana kumhanya kwemota kuchidarika kumhanya kwakati (kazhinji 5km/awa).
[Zano] Mafungu eUltrasonic anoreva mafungu eruzha anodarika nhanho yekunzwa kwevanhu (inopfuura 20kHz). Ane hunhu hwemafrequency akakwira, kupararira kwemutsetse wakatwasuka, kutungamira kwakanaka, diffraction diki, kupinda kwakasimba, kumhanya kwekupararira kunononoka (inenge 340m/s) nezvimwewo. Mafungu eUltrasonic anofamba nepakati pezvinhu zvakaoma zvisingaonekwe uye anogona kupinda kusvika pakadzika kwemamita makumi. Kana ultrasonic ikasangana netsvina kana ma interfaces, inoburitsa mafungu anoratidzwa, ayo anogona kushandiswa kugadzira kuona kudzika kana kutenderera, uye nekudaro anogona kugadzirwa kuita sisitimu yekutenderera.
