Toshiba PVT-712BT 11MC4 Micro Convex Ultrasound Probe Tsev Kho Mob Khoom Siv

Lwm yam Toshiba sojntsuam peb tuaj yeem muab:

Kev paub point

Transducers

Ultrasonic transducers hloov AC rau hauv ultrasound, nrog rau qhov thim rov qab. Ultrasonics, feem ntau yog hais txog piezoelectric transducers lossis capacitive transducers. Piezoelectric crystals hloov qhov loj thiab cov duab thaum siv hluav taws xob; AC voltage ua rau lawv oscillate ntawm tib zaus thiab tsim ultrasonic suab. Capacitive transducers siv electrostatic teb nruab nrab ntawm cov diaphragm conductive thiab cov phaj rov qab.

Lub beam qauv ntawm lub transducer tuaj yeem txiav txim siab los ntawm thaj chaw ua haujlwm ntawm transducer thiab cov duab, lub ultrasound wavelength, thiab lub suab tshaj tawm ntawm qhov nruab nrab ntawm kev nthuav tawm. Cov duab kos qhia lub suab teb ntawm qhov tsis pom tseeb thiab tsom mus rau ultrasonic transducer hauv dej, meej meej ntawm qhov sib txawv zog.

Txij li thaum cov ntaub ntawv piezoelectric tsim ib qho hluav taws xob thaum lub zog siv rau lawv, lawv tuaj yeem ua haujlwm ua ultrasonic detectors. Qee lub tshuab siv cais cov transmitters thiab receivers, thaum lwm tus muab ob qho tib si ua haujlwm rau hauv ib qho piezoelectric transceiver.

Ultrasound transmitters tuaj yeem siv cov qauv tsis yog piezoelectric. xws li magnetostriction. Cov ntaub ntawv nrog cov cuab yeej no hloov me ntsis thaum raug rau ib qho chaw sib nqus, thiab ua cov khoom siv hluav taws xob.

Lub capacitor ("condenser") microphone muaj ib lub diaphragm nyias uas teb rau ultrasound tsis. Kev hloov hluav taws xob hauv nruab nrab ntawm lub diaphragm thiab cov phaj sib txuas sib txuas ua ke hloov cov suab paj nruag rau cov hluav taws xob tam sim no, uas tuaj yeem ua kom nrov nrov.

Lub hauv paus ntsiab lus ntawm diaphragm (los yog daim nyias nyias) kuj yog siv nyob rau hauv cov tshiab micro-machined ultrasonic transducers (MUTs).

Cov khoom siv no yog tsim los siv silicon micro-machining thev naus laus zis (MEMS thev naus laus zis), uas yog qhov tshwj xeeb rau kev tsim cov khoom siv hluav taws xob. Kev vibration ntawm lub diaphragm yuav raug ntsuas los yog induced electronically siv lub capacitance ntawm lub diaphragm thiab ib tug nyob ze spaced backing phaj (CMUT), los yog ntxiv ib tug nyias txheej ntawm piezo-hluav taws xob khoom ntawm diaphragm (PMUT). Xwb, kev tshawb fawb tsis ntev los no tau pom tias qhov kev vibration ntawm lub diaphragm yuav ntsuas los ntawm lub nplhaib me me optical resonator integrated hauv lub diaphragm (OMUS).

Ultrasonic Transducers kuj tseem siv hauv acoustic levitation.