Medical ECG Monitor Control Board
Paub meej
PPG thev naus laus zis raws li kev saib xyuas kho qhov muag yog ib qho cuab yeej kho qhov muag uas tuaj yeem tau txais cov ntaub ntawv qhia txog kev ua haujlwm ntawm lub plawv yam tsis muaj kev ntsuas bioelectrical signals.Lub hauv paus ntsiab lus tseem ceeb yog tias thaum lub plawv dhia, yuav muaj lub siab nthwv dej los ntawm cov hlab ntsha.Cov nthwv dej no yuav hloov me ntsis txoj kab uas hla ntawm cov hlab ntsha.Kev saib xyuas PPG siv qhov kev hloov pauv no kom tau txais cov kev hloov ntawm lub plawv txhua zaus nws ntaus.PPG feem ntau yog siv los ntsuas ntshav oxygen saturation (SpO2), yog li nws tuaj yeem tau txais lub plawv dhia (xws li lub plawv dhia) cov ntaub ntawv ntawm qhov kev kawm hauv txoj kev yooj yim.
Electrode-based ECG soj ntsuam thev naus laus zis tau kuaj pom los ntawm bioelectricity, thiab qhov muaj peev xwm kis tau ntawm lub plawv tuaj yeem kuaj pom los ntawm kev siv cov electrodes txuas rau saum npoo ntawm tib neeg daim tawv nqaij.Hauv txhua lub voj voog ntawm lub plawv, lub plawv zoo siab ua ntu zus los ntawm lub pacemaker, lub atrium, thiab lub ventricle, nrog rau cov kev hloov pauv hauv cov peev txheej ntawm cov hlwb myocardial suav tsis txheeb.Cov kev hloov bioelectric no hu ua ECG.Los ntawm kev ntes cov teeb liab bioelectric thiab tom qab ntawd ua digitally ua lawv, lawv tau hloov mus rau tom qab ua cov teeb liab digital, nws tuaj yeem tso tawm cov ntaub ntawv qhia txog kev noj qab haus huv hauv plawv.
Hauv kev sib piv: PPG thev naus laus zis raws li kev saib xyuas kho qhov muag yog qhov yooj yim dua thiab qis dua tus nqi, tab sis qhov tseeb ntawm cov ntaub ntawv tau txais tsis yog siab thiab tsuas yog lub plawv dhia tus nqi xwb.Txawm li cas los xij, lub tshuab electrode-raws li ECG xyuas yog qhov nyuaj dua, thiab cov teeb liab tau txais yog qhov tseeb dua thiab suav nrog tag nrho lub voj voog ntawm lub plawv, suav nrog PQRST yoj pab pawg, yog li tus nqi kuj tseem siab dua.Rau kev saib xyuas ECG ntse, yog tias koj xav tau cov cim ECG siab, qhov ua tau zoo ECG siab nti yog qhov tseem ceeb.Vim tias qhov kev ua haujlwm siab, qhov kev txiav txim siab siab tam sim no feem ntau yog siv los ntawm TI txawv teb chaws, Muab los ntawm cov tuam txhab xws li ADI, cov chips hauv tsev muaj txoj hauv kev mus ntev.
TI's ECG cov chips tshwj xeeb suav nrog ADS129X series, suav nrog ADS1291 thiab ADS1292 rau cov ntawv siv hnav.ADS129X series nti muaj ib qho built-in 24-ntsis ADC, uas muaj cov teeb liab siab raug, tab sis qhov tsis zoo ntawm daim ntawv thov nyob rau hauv lub sij hawm hnav yog: lub pob loj ntawm cov nti no loj, lub zog noj yog loj, thiab muaj ntau ntau. peripheral Cheebtsam.Tsis tas li ntawd, qhov kev ua tau zoo ntawm cov nti no hauv ECG sau siv hlau electrodes yog qhov nruab nrab, thiab kev siv hlau electrodes hauv cov ntawv siv hnav yog qhov kev zam.Lwm qhov teeb meem loj ntawm cov chips no yog tias tus nqi tsev nqi kuj yog siab, tshwj xeeb tshaj yog nyob rau hauv cov ntsiab lus ntawm cov tub ntxhais tsis txaus, cov khoom siv tsis txaus thiab tus nqi tseem siab.
ADS's ECG-specific chips suav nrog ADAS1000 thiab AD8232, uas AD8232 yog taw qhia rau cov ntawv siv hnav, thaum ADAS1000 siv ntau dua rau cov khoom siv kho mob siab.ADAS1000 muaj lub teeb liab zoo piv rau ADS129X, tab sis muaj teeb meem ntau dua suav nrog kev siv hluav taws xob ntau dua, cov khoom siv ntau dua thiab cov nqi nti siab.AD8232 yog qhov tsim nyog rau cov ntaub ntawv siv tau ntau dua ntawm kev siv hluav taws xob thiab qhov loj me.Piv nrog rau ADS129X series, lub teeb liab zoo sib txawv heev.Tsis tas li ntawd nyob rau hauv daim ntawv thov kev ua tau zoo ntawm cov hlau qhuav electrodes, ib qho zoo algorithm kuj yuav tsum tau.Txhawm rau siv cov hlau electrodes nyob rau hauv daim ntawv thov scenarios, lub teeb liab qhov tseeb yog qhov nruab nrab thiab muaj kev cuam tshuam, tab sis yog tias tsuas yog kom tau txais lub plawv dhia ceev, cov nti no tsis muaj dab tsi ntau tshaj qhov txaus siab.
