Kev faib tawm thiab kev ua haujlwm ntawm ultrasonic transducer
Ultrasonic transducer yog ib lo lus dav dav rau ntau hom khoom siv uas xa thiab tau txais ultrasonic tsis. Raws li kev siv ib puag ncig, kev ua haujlwm zaus, lub zog xav tau, thiab lub hom phiaj sib txawv ntawm cov transducer, ntau yam qauv tuaj yeem siv tau.
Ultrasonic transducer yog ib lo lus dav dav rau ntau hom khoom siv uas xa thiab tau txais ultrasonic tsis. Raws li kev siv ib puag ncig, kev ua haujlwm zaus, lub zog xav tau, thiab lub hom phiaj sib txawv ntawm cov transducer, ntau yam qauv tuaj yeem siv tau. Raws li lub hauv paus ntsiab lus ntawm kev hloov hluav taws xob muaj kev txhawj xeeb, qee qhov ultrasonic transducers siv lub cev los ntawm cov khoom siv hluav taws xob xws li piezoelectric effect, magnetostriction, electrostriction, thiab lwm yam, thiab qee qhov siv cov teebmeem electrodynamic hauv cov qauv transducer xws li cov teebmeem electromagnetic, Electrostatic. nyhuv; qee qhov siv cov vortex vibration thaum lub sij hawm txhaj tshuaj thiab cov resonance thiab modulation ntawm cov qauv. Tsis tas li ntawd, ntau hom qauv tuaj yeem siv tau raws li kev siv ib puag ncig, kev ua haujlwm zaus, lub zog xav tau, thiab lub hom phiaj sib txawv ntawm cov transducer. (1) Ultrasonic transducer: Ib qho khoom siv uas tuaj yeem hloov hluav taws xob ntau zaus rau hauv lub zog siv tshuab, feem ntau magnetostrictive thiab piezoelectric ceramic. Lub hwj chim tso tawm mus rau lub tshuab hluav taws xob ultrasonic, thiab tom qab ntawd mus rau ultrasonic transducer, feem ntau yog los ntawm kev xa tawm ultrasonic thiab tau txais cov cuab yeej los tsim cov nthwv dej ultrasonic. (2) Cov muaj pes tsawg leeg ntawm ultrasonic transducer: nrog rau lub plhaub, cov txheej txheem sib txuam, lub qhov rais acoustic, lub piezoelectric ceramic disc transducer, lub nraub qaum, thiab cov hlau lead-tawm cable. Nws yog characterized nyob rau hauv hais tias nws kuj muaj xws li array receiver, uas muaj cov lead-out cable thiab Nws yog tsim los ntawm lub zog ntaus ntawv, hlau nplhaib thiab roj hmab gasket. (3) Ultrasonic transducers yog piezoelectric ceramics uas resonate ntawm ultrasonic zaus. Cov nyhuv piezoelectric ntawm cov khoom siv hloov cov teeb liab hluav taws xob rau hauv cov tshuab kev vibrations. Ultrasonic transducers yog lub zog hloov dua siab tshiab cov cuab yeej uas nws txoj haujlwm yog nkag rau hluav taws xob hluav taws xob hloov mus rau hauv lub zog hluav taws xob (ultrasound) thiab tom qab ntawd kis tau, thiab nws siv ib feem me me ntawm nws tus kheej lub zog. Hom ultrasonic transducers: tuaj yeem muab faib ua piezoelectric transducers, sandwich transducers, cylindrical transducers, inverted horn transducers, thiab lwm yam.
