Taw qhia rau Ultrasonic Transducers
Cov ultrasonic transducer yog cov xuab zeb tsim ua los ntawm cov hlau lead zirconate titanate titanate silicon carbide ceramic khoom. Cov tshuaj ntxuav hluav taws xob ultrasonic feem ntau siv cov tshuab raj hom ultrasonic hloov pauv, uas ua kom lub siab ntxiv thiab suab hluav taws xob ua haujlwm tau zoo los ntawm kev nthuav dav hluav taws xob nyob rau sab pem hauv ntej. Nrog rau lub meej mom tsim nyog, lub tshuab hloov pauv tau zoo electromechanical hloov chaw ua haujlwm tau zoo nyob rau hauv cov xwm txheej ntawm lub zog loj thiab qhov loj raug.
Ib qho: kev tsim kho
Thaum pib ntawm lub xyoo pua 20, kev txhim kho hluav taws xob thev naus laus zis ua rau tib neeg siv cov nyhuv piezoelectric thiab magnetostrictive effectors ntawm qee yam khoom siv los tsim ntau yam electromechanical hloov. Xyoo 1917, tus kws tshaj lij fab Fabkis txoj haujlwm Lang Zhiwan siv lub quartz ntuj los thov siv ultrasound rau ntau qhov chaw ntawm cov tub rog thiab kev lag luam hauv tebchaws. Tseem muaj cov magnetostrictive transducers nrog cov nyiaj ntawm ultrasonic fais fab, thiab ntau yam ntawv thov rau lub hom phiaj sib txawv. Ntau yam ultrasonic transducers, xws li hluav taws xob, electromagnetic thiab electrostatic transducers.
Ob: Cov khoom faib tawm
Muaj feem ntau ob yam ntawm ultrasonic transducers: magnetostrictive transducers thiab tubular siv lead ua transducers.
Magnetostrictive
Muaj cov magnetostrictive npib tsib xee transducers thiab ferrite transducers.
Qhov hloov pauv hluav taws xob electro-acoustic efficiency ntawm ferrite transducers yog tus nqi tsawg. Feem ntau, cov ua haujlwm yuav raug txo tom qab ib lossis ob xyoos ntawm kev siv, thiab kev hloov pauv electro-acoustic muaj peev xwm yuav luag ploj. Cov txheej txheem ntawm nickel chip transducer yog qhov nyuaj thiab kim, yog li nws tsis tshua muaj siv.
Phosphate pob zeb hom
Ntawm lawv, cov cuab yeej siv tshaj plaws thiab txhim khu kev qha raws li cov nyhuv piezoelectric kom paub cov kev sib nrig sib hloov ntawm hluav taws xob lub zog thiab lub zog suab tau hu ua series transducer. Lub piezoelectric nyhuv ntawm cov khoom hloov cov teeb liab hluav taws xob rau hauv kev siv tshuab kev co. Qhov hloov pauv no muaj qhov zoo electro-acoustic hloov dua siab tshiab, cov khoom siv raw pheej yig, kev tsim khoom yooj yim thiab tsis yooj yim rau lub hnub nyoog.
Qhov nthuav tawm thiab kev txiav txim siab ntawm cov quartz siv lead ua muaj tsawg heev, thiab qhov hluav taws xob ntawm 3000V tsuas yog ua rau deformation qis dua 0.01um. Cov nyhuv piezoelectric ntawm barium titanate yog 20-30 npaug ntau dua li ntawm quartz siv lead ua. Titanate ua rau muaj ob qho zoo, feem ntau yog tu ultrasonic, qhov khuam pom thiab cov hluav taws xob qis ultrasonic ua cov khoom siv.
Peb: muaj pes tsawg leeg
Nruab nrab polycarbonate ceramic khoom siv
Pem hauv ntej thiab nram qab daim hlau hlau
Prestressed screws
Electrode phaj
Insulating raj
Hom sandwich transducer no yuav tsim lub tshuab hluav taws xob ultrasonic ruaj khov thaum lub thauj hloov, uas yog cov qauv thiab qhov tseem ceeb tshaj plaws kom tau txais lub zog ultrasonic tsav qhov chaw.
Plaub: Lub tshuab xa dej ultrasonic tau kuaj xyuas ua ntej tawm hauv Hoobkas.
Siv tshwj xeeb kev co lub taub hau impedance tester los ntsuas qhov tseem ceeb ntawm lub taub hau kev co: Fs R1 C0 Qm, ua qhov kev soj ntsuam ntawm lub taub hau kev co, txoj cai kuaj pom tau hais tias qhov kev tawm tsam yog tsawg dua lossis sib npaug li 25Ω, kev tawm tsam qhov txawv yog tsis pub dhau 10Ω, qhov zaus yog< ±="" 0.5khz,="" ib="" lub="" zog="" sib="" txawv="" yog="" li="" ntawm="">
Tuav nws lub taub hau: 1. Muaj cov haujlwm txhawb nqa 2. Tom qab 3 lub hlis nyob rau tib lub sijhawm, txoj haujlwm ua haujlwm ruaj khov.
