Toshiba PVT-712BT 11MC4 Micro Convex Ultrasound Probe Hospital Medical Device

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Transducers

Ultrasonic transducers inoshandura AC kuita Ultrasound, pamwe neinodzosera. Ultrasonics, kazhinji inoreva piezoelectric transducers kana capacitive transducers. Piezoelectric makristasi anoshandura saizi uye chimiro kana voltage ikaiswa; AC voltage inovaita oscillate panguva imwecheteyo uye kuburitsa ultrasonic ruzha. Capacitive transducers anoshandisa electrostatic minda pakati conductive diaphragm uye kutsigira ndiro.

Iyo danda patani yetransducer inogona kutariswa neino shanda transducer nzvimbo uye chimiro, iyo ultrasound wavelength, uye ruzha velocity yenzvimbo yekuparadzira. Iwo madhayagiramu anoratidza minda inonzwika yeasina kutariswa uye inotarisisa ultrasonic transducer mumvura, zviri pachena pamatanho esimba akasiyana.

Sezvo piezoelectric zvinhu zvichigadzira voltage kana simba richiiswa kwavari, vanogona zvakare kushanda se ultrasonic detectors. Mamwe masisitimu anoshandisa ma transmitter akasiyana uye anogashira, nepo mamwe achibatanidza mabasa ese kuita imwe piezoelectric transceiver.

Ultrasound transmitters inogona zvakare kushandisa isiri-piezoelectric nheyo. zvakadai semagnetostriction. Zvishandiso zvine chivakwa ichi zvinoshandura saizi zvishoma kana zvakafumurwa kune magineti, uye ita ma transducers anoshanda.

A capacitor ("condenser") maikorofoni ine diaphragm yakatetepa inopindura mafungu e ultrasound. Shanduko mundima yemagetsi pakati pe diaphragm uye yakanyatso paradzana inotsigira ndiro inoshandura masaini ezwi kumagetsi emagetsi, anogona kukwidziridzwa.

Iyo diaphragm (kana membrane) musimboti inoshandiswawo mune ichangoburwa micro-machined ultrasonic transducers (MUTs).

Midziyo iyi inogadzirwa pachishandiswa silicon micro-machining tekinoroji (MEMS tekinoroji), iyo inonyanya kubatsira pakugadzira ma transducer arrays. Kudengenyeka kwediaphragm kunogona kuyerwa kana kupesvedzerwa nemagetsi pachishandiswa capacitance pakati pe diaphragm uye yakanyatso paradzana backing plate (CMUT), kana nekuwedzera nhete yepiezo-electric material pa diaphragm (PMUT). Nerumwewo, tsvakiridzo ichangoburwa yakaratidza kuti kuzunguzika kwediaphragm kunogona kuyerwa nekadiki kekuona mhete resonator yakabatanidzwa mukati me diaphragm (OMUS).

Ultrasonic Transducers inoshandiswawo mune acoustic levitation.