█Isingeniso
Isebenzisa inzwa ye-ultrasonic njengesidluliseli nomamukeli, isidluliseli sikhipha igagasi le-ultrasonic amplitude elilinganayo endaweni etholiwe bese umamukeli athola igagasi le-ultrasonic elibonisiwe, lapho kungekho nto ehambayo endaweni etholiwe, igagasi le-ultrasonic elibonakalayo lilingana ne-amplitude. . Uma kukhona into enyakazayo endaweni yokutholwa, i-ultrasonic wave amplitude eboniswayo iyahlukahluka futhi ishintsha njalo, futhi isifunda esamukelayo sithola isignali eshintshayo ukuze ilawule umjikelezo ukuze usabele, okungukuthi, ukushayela i-alamu.
I-alamu yokugqekeza ye-ultrasonic
█Wisimiso se-orking se-alamu ye-anti-theft ye-ultrasonic
Ngokwesakhiwo sayo nezindlela zokufaka ihlukaniswe yaba izinhlobo ezimbili: eyodwa ukufakwa kwama-transducer amabili e-ultrasonic endlini eyodwa, okungukuthi, i-transceiver ne-transmitter ehlanganisiwe yohlobo, isimiso sayo sokusebenza sisekelwe kumphumela we-Doppler wamagagasi omsindo, futhi. eyaziwa ngokuthi uhlobo lwe-Doppler. Uma kungekho nto ehambayo engena endaweni etholiwe, amagagasi e-ultrasonic abonisiwe ane-amplitude elinganayo. Lapho into ehambayo ingena endaweni etholiwe, i-ultrasound ebonisiwe ine-amplitude engalingani futhi ishintsha njalo. Ukusatshalaliswa kwenkundla yamandla kwe-ultrasound ekhishiwe kunokuqondisa okuthile, ngokuvamile endaweni ebheke isiqondiso endaweni yokusabalalisa insimu yamandla ayi-elliptical.
Okunye ukuthi ama-transducer amabili abekwe ezindaweni ezihlukene, okungukuthi, ukwamukela nokudlulisa uhlobo oluhlukanisayo, olwaziwa ngokuthi umtshina wenkundla yomsindo, isidlulisi sawo kanye nomamukeli ngokuvamile akuzona iziqondiso (okungukuthi i-omnidirectional) noma i-transducer yohlobo lwe-half-way. I-transducer engaqondile ikhiqiza iphethini yokusabalalisa insimu yamandla e-hemispherical futhi uhlobo lwe-semi-directional lukhiqiza iphethini yokusabalalisa insimu yamandla e-conical.
Isimiso sokusebenza sohlobo lwe-Doppler
█Isibonelo sesekhethi yokudlulisa isignali yegagasi eqhubekayo ye-ultrasonic.
Isibonelo sesekhethi yokudlulisa isignali yegagasi eqhubekayo ye-ultrasonic
█Izindawo ezisetshenziselwa ama-alamu aphikisana nokweba.
Ama-ultrasonic detectors angakwazi ukubona izinto ezihambayo anezinhlobonhlobo zezinhlelo zokusebenza, isibonelo, ukuvuleka komnyango okuzenzakalelayo nokuvala ukutholwa nokulawula; iziqalisi zokuphakamisa okuzenzakalelayo; umtshina we-alamu omelene nokwebiwa, njll. Isici salo mtshina ukuthi singahlulela ukuthi zikhona yini izilwane ezingabantu ezisebenzayo noma ezinye izinto ezihambayo endaweni etholiwe. Inomjikelezo omkhulu wokulawula nokuthembeka okuphezulu.
Isikhathi sokuthumela: Dec-19-2022