Medical ECG Monitor Board
Imininingwane
Ubuchwepheshe be-PPG obusekelwe ekuhlolweni kokubona ubuchwepheshe obubonakalayo obungathola ulwazi lomsebenzi wenhliziyo ngaphandle kokulinganisa amasignali we-bioelectrical.Isimiso esiyisisekelo siwukuthi njengoba inhliziyo ishaya, kuyoba namagagasi okucindezela asakazwa ngemithambo yegazi.Leli gagasi lizoshintsha kancane ububanzi bemithambo yegazi.Ukuqapha kwe-PPG kusebenzisa lolu shintsho ukuze kutholwe izinguquko zenhliziyo njalo lapho ishaya.I-PPG isetshenziswa kakhulu ukukala ukugcwala komoyampilo egazini (SpO2), ngakho ingathola idatha yesilinganiso senhliziyo (okungukuthi ukushaya kwenhliziyo) yesihloko ngendlela elula.
Ubuchwepheshe bokuqapha be-ECG obusekelwe ku-Electrode butholwa yi-bioelectricity, futhi ukudluliswa okungenzeka kwenhliziyo kungatholwa ngokusebenzisa ama-electrode anamathiselwe ebusweni besikhumba somuntu.Emjikelezweni ngamunye wenhliziyo, inhliziyo ijatshuliswa ngokulandelana kwe-pacemaker, i-atrium, ne-ventricle, okuhambisana nezinguquko emandleni esenzo samangqamuzana amaningi e-myocardial.Lezi zinguquko ze-bioelectric zibizwa nge-ECG.Ngokuthwebula amasignali e-bioelectric bese ewacubungula ngedijithali, aguqulwa abe Ngemva kokucubungula isignali yedijithali, ingakhipha ulwazi olunembile nolunemininingwane yempilo yenhliziyo.
Uma kuqhathaniswa: ubuchwepheshe be-PPG obusekelwe ekuqapheni okubonakalayo bulula futhi buphansi ngezindleko, kodwa ukunemba kwedatha etholiwe akuphakeme futhi kutholakala inani lokushaya kwenhliziyo kuphela.Kodwa-ke, ubuchwepheshe bokuqapha be-ECG obusekelwe ku-electrode buyinkimbinkimbi kakhulu, futhi isignali etholiwe inembe kakhulu futhi ihlanganisa wonke umjikelezo wenhliziyo, kuhlanganise neqembu le-PQRST wave, ngakho izindleko nazo ziphakeme.Ukuze uthole ukuqapha kwe-ECG okugqokekayo okuhlakaniphile, uma ufuna ukuthola amasiginali we-ECG anembe kakhulu, i-ECG esebenza kahle kakhulu i-chip ebalulekile ibalulekile.Ngenxa yomkhawulo ophakeme wezobuchwepheshe, le chip enembayo ephezulu okwamanje isetshenziswa ikakhulukazi i-TI yangaphandle, Inikezwe izinkampani ezifana ne-ADI, ama-chips asekhaya anendlela ende okufanele ahambe.
Ama-chips e-TI's ECG-specific afaka uchungechunge lwe-ADS129X, okuhlanganisa i-ADS1291 ne-ADS1292 yezinhlelo zokusebenza ezigqokekayo.I-chip ye-ADS129X yochungechunge ine-ADC eyakhelwe ngaphakathi engu-24-bit, enembayo ephezulu yesignali, kodwa ububi bokusetshenziswa ezikhathini ezigqokekayo yilezi: usayizi wephakheji yale chip mkhulu, ukusetshenziswa kwamandla kukhulu, futhi maningi uma kuqhathaniswa. izingxenye ze-peripheral.Ngaphezu kwalokho, ukusebenza kwale chip ekuqoqweni kwe-ECG kusetshenziswa ama-electrode ensimbi kuyisilinganiso, futhi ukusetshenziswa kwama-electrode ensimbi ezinhlelweni ezigqokekayo akunakugwenywa.Enye inkinga enkulu ngalolu chungechunge lwama-chips ukuthi intengo yeyunithi yezindleko iphakeme kakhulu, ikakhulukazi esimweni sokushoda okuyisisekelo, ukunikezwa kuyashoda futhi intengo ihlala iphezulu.
Ama-chips e-ADS aqondene ne-ECG ahlanganisa i-ADAS1000 ne-AD8232, lapho i-AD8232 iqondiswe kuzinhlelo zokusebenza ezigqokekayo, kuyilapho i-ADAS1000 isetshenziswa kakhulu kumishini yezokwelapha esezingeni eliphezulu.I-ADAS1000 inekhwalithi yesiginali eqhathaniswa neye-ADS129X, kodwa izinkinga ezengeziwe zifaka ukusetshenziswa kwamandla okuphezulu, okuphathelene nomngcele oyinkimbinkimbi nezintengo eziphakeme zama-chip.I-AD8232 ifaneleka kakhulu izinhlelo zokusebenza ezigqokekayo ngokuya ngokusetshenziswa kwamandla nosayizi.Uma kuqhathaniswa nochungechunge lwe-ADS129X, ikhwalithi yesiginali ihluke kakhulu.Futhi ekusebenzeni kwesicelo sama-electrode omile ensimbi, i-algorithm engcono nayo iyadingeka.Ukuze usebenzise ama-electrode ensimbi kuzimo zohlelo lokusebenza ezigqokekayo, ukunemba kwesignali kumaphakathi futhi kukhona ukuhlanekezela, kodwa uma kuphela ukuthola amasiginali okushaya kwenhliziyo anembile, le chip ayilutho ngaphandle kokwanelisa ngokuphelele.