Ukuzinza kwesilinganiso kuyinkomba ebalulekile yokuhlola ikhwalithi yemonitha yesiguli.Esilinganisweni sokugcwala komoyampilo egazini, imonitha isebenzisa inqubo ye-dual-wavelength pulsatile photoplethysmography.Ngokuhlaziya ukumuncwa okuhlukile kokukhanya okubomvu ne-infrared nge-hemoglobin ene-oxygen (HbO2) ne-hemoglobin (Hb) egazini, kubalwa amazinga esikhathi sangempela sokugcwala komoyampilo egazini.Ukuze kuqinisekiswe imiphumela yokulinganisa ezinzile, imonitha isebenzisa izidingo eziphezulu zokukhishwa kwe-LED kanye nokwamukela i-photodetector ukumelana nokuphazamiseka.I-HM-10 oximetry probe isebenzisa idizayini yokuxhumana ebonakalayo enezikhonkwane eziyishumi, evumela isivikelo esihlukene sokudlulisa isignali kanye nokuzinza okuphezulu ngomshini wokuvikela wangaphandle wamaphini amabili.

Ukuze uthole isignali ye-electrocardiogram (ECG), ukuqapha kwesiguli kusebenzisa isistimu ye-ECG ehamba phambili emihlanu.Ithwebula amasignali e-bioelectric futhi iwaguqulele ekuphumeni kwedijithali.Ukuqapha kwe-HM10 kuhlanganisa iziteshi zokuthola ze-ECG ezinhlanu kanye nomthofu owodwa oshayelwa, enikeza ukuboniswa okunembile nokuzinzile kwamagagasi we-ECG kanye nolwazi lwezinga lokuphefumula nenhliziyo.Ukuze kuthuthukiswe ukuzinza kokudluliswa kwesignali, imojula ye-ECG isebenzisa indlela yokuxhuma ngokomzimba enamaphini ayishumi nambili futhi isebenzisa ukuhlukaniswa kwephinikhodi ukuze kuvikelwe, ithuthukise ngokwengeziwe ukwethembeka kokudluliswa kwesignali.

Lokhu kuthuthuka kwezobuchwepheshe okugqanyisiwe kudlala indima ebalulekile ekuqinisekiseni ukuzinza kokulinganisa kubaqaphi besiguli.Ngokusebenzisa i-photoplethysmography yekhwalithi ephezulu kanye namasu okuxhumana ngokomzimba, imonitha inciphisa ngempumelelo ukuphazamiseka kwesignali futhi ithola imiphumela yokulinganisa ezinzile nenembile.Lobu buchwepheshe buvumela umqaphi ukuthi enze ngendlela enokwethenjelwa ezindaweni ezihlukene, ehlinzeka ochwepheshe bezokunakekelwa kwempilo ngosekelo lwedatha oluthembekile lokuhlolwa okungcono kwesiguli kanye nokuthathwa kwezinqumo zezokwelapha.

Lapho ukhetha ukuqapha kwesiguli, ukuzinza kokulinganisa kufanele kube ukucatshangelwa okubalulekile.Abakhiqizi basebenzisa ubuchwepheshe obubalulekile obufana ne-dual-wavelength photoplethysmography kanye nezindlela zokuxhuma ngokomzimba ukuze kuqinisekiswe ukuzinza ekugcwalisweni komoyampilo egazini kanye nezilinganiso zesignali ye-ECG.Lezi zithuthukisi ziqinisekisa ukusebenza okuthembekile nokunemba.Khetha imonitha ebeka phambili ukuzinza kokulinganisa ukuze ilethe imiphumela yokunakekelwa kwezempilo ephezulu.