█Intshayelelo
Ukusebenzisa i-sensor ye-ultrasonic njenge-transmitter kunye ne-receiver, i-transmitter ikhupha i-amplitude ye-ultrasonic wave elinganayo kwindawo efunyenweyo kwaye umamkeli ufumana i-wave ye-ultrasonic ebonakalisiweyo, xa kungekho nto ishukumayo kwindawo ebhaqiweyo, i-wave ye-ultrasonic ebonakalisiweyo ye-amplitude elinganayo. . Xa kukho into ehambayo kwindawo yokufumanisa, i-ultrasonic wave amplitude ebonakalisiweyo iyahluka kwaye itshintsha rhoqo, kwaye isiphaluka esifumanayo sibona isignali eguqukayo yokulawula isiphaluka ukuba iphendule, oko kukuthi, ukuqhuba i-alamu.
I-alamu ye-ultrasonic burglar
█Wumgaqo-nkqubo we-alarm anti-theft ye-ultrasonic
Ngokwesakhiwo sayo kunye neendlela zokufakela zahlulahlulwe zibe ziindidi ezimbini: enye kukufakelwa kwee-transducers ezimbini ze-ultrasonic kwindlu enye, oko kukuthi, i-transceiver kunye ne-transmitter edityanisiweyo yohlobo, umgaqo wayo wokusebenza usekelwe kwimpembelelo ye-Doppler yamaza omsindo, kwakhona. eyaziwa ngokuba yiDoppler. Xa kungekho nto ishukumayo ingena kwindawo efunyenweyo, amaza abonakalisiweyo e-ultrasonic anomlinganiselo olinganayo. Xa into eshukumayo ingena kwindawo efunyenweyo, i-ultrasound ebonakalisiweyo i-amplitude engalingani kwaye ihlala iguquka. Ukuhanjiswa kwentsimi yamandla e-ultrasound ekhutshweyo kunomgaqo othile, ngokuqhelekileyo kwindawo ejongene nolwalathiso kwi-elliptical field field distribution.
Enye i-transducers ezimbini zibekwe kwiindawo ezahlukeneyo, oko kukuthi, ukufumana kunye nokuhambisa uhlobo lokwahlula, olubizwa ngokuba yi-sound field detector, i-transmitter yayo kunye ne-receiver ininzi i-non-directional (okt omnidirectional) i-transducer okanye i-half-way type transducer. I-transducer engekho-directional ivelisa i-hemispherical energy field distribution pattern and the semi-directional type ivelisa i-conical energy field distribution pattern.
Umgaqo wokusebenza wohlobo lweDoppler
█Umzekelo we-ultrasonic eqhubekayo ye-wave wave transmission circuit.
Umzekelo we-ultrasonic eqhubekayo ye-wave wave transmission circuit
█Iindawo ezisetyenziselwa ii-alamu zokulwa nobusela.
Iifowuni ze-Ultrasonic ezinokubona izinto ezihambayo zinezicelo ezininzi, umzekelo, ukuvula umnyango ngokuzenzekelayo kunye nokuvala ukufumanisa kunye nokulawula; iziqalisi zokuphakamisa ngokuzenzekelayo; umtshina we-alamu wokulwa nobusela, njl. njl Inomlinganiselo omkhulu wokulawula kunye nokuthembeka okuphezulu.
Ixesha lokuposa: Dec-19-2022