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Tikudziwa kuti SpO₂ ndi chizindikiro chofunikira chomwe chimasonyeza momwe thupi limapumira komanso ngati mpweya uli wabwinobwino, ndipo oximeter ndi chipangizo chomwe chimayang'anira momwe mpweya ulili m'magazi mwathu. Mpweya wa okosijeni ndiye maziko a zochita za moyo, hypoxia ndiye chifukwa chachikulu cha matenda ambiri, ndipo matenda ambiri angayambitsenso mpweya wosakwanira. SpO₂yochepera 95% imasonyeza hypoxia yofatsa. Yochepera 90% ndi hypoxia yoopsa ndipo imafunika kuchiritsidwa mwachangu momwe zingathere. Si okalamba okha omwe ali ndi vuto la hypoxemia, komanso anthu amakono amakhala ndi nkhawa zambiri zamaganizo komanso nthawi yogwira ntchito komanso yopumula. Zolakwika nthawi zambiri zimayambitsa hypoxemia. SpO₂ yotsika nthawi yayitali imabweretsa kuvulala kwakukulu kwa thupi la munthu. Chifukwa chake, ndikofunikira kuyeza SpO₂ m'thupi nthawi zonse, ngakhale njira zodzitetezera zitatengedwa.

Ponena za ma oximeter, kwa ogwiritsa ntchito kunyumba komanso akatswiri odziwa bwino ntchito zolimbitsa thupi, anthu ambiri amasankha ma oximeter onyamulika ndi chala, chifukwa ndi okongola, ochepa, osavuta kunyamula, ndipo samangokhala ndi nthawi ndi malo. Ndiosavuta komanso yachangu. Ma oximeter ochepetsa zingwe amagwiritsidwanso ntchito m'malo ambiri azachipatala, koma kulondola kwake ndi kwakukulu. Chifukwa chake, kuchotsa zolakwika ndi chimodzi mwazinthu zofunika kwambiri pakuyeza bwino kwa oximeter.

Kulondola kwa oximeter kumagwirizana kwambiri ndi mfundo yaukadaulo ya oximeter. Mfundo za kapangidwe ka opereka mayankho a oximeter omwe alipo pamsika ndizofanana: kugwiritsa ntchito LED yofiira, LED ya infrared ndi kapangidwe ka photodiode ya SpO₂ sensor circuit, Kuphatikiza LED drive circuit. Kuwala kofiira ndi kuwala kwa infrared zitatumizidwa kudzera mu chala, zimazindikirika ndi circuit yokonza zizindikiro, kenako zimatumizidwa ku ADC module ya single-chip microcomputer kuti ziwerengere kuchuluka kwa SpO₂. Onsewa amagwiritsa ntchito zinthu zomwe zimakhudzidwa ndi kuwala monga kuwala kofiira, kuwala kwa infrared LED ndi photodiode kuti ayesere kufalikira kwa zala ndi makutu. Komabe, opereka mayankho a oximeter omwe ali ndi miyezo yapamwamba komanso zofunikira pa pulogalamuyi ali ndi zofunikira kwambiri pa mayeso. Kuphatikiza pa njira zoyesera zachikhalidwe zomwe zatchulidwa pamwambapa, ayenera kugwiritsa ntchito mapulogalamu awoawo komanso ma simulation aukadaulo a oximeter. Deta imayerekezeredwa ndi oximeter yachipatala.

Oximeter yopangidwa ndi MedLinket yaphunziridwa m'zipatala zoyenerera. Mu kafukufuku wowongolera kuchuluka kwa shuga, SaO₂ ya muyeso wa mankhwalawa kuyambira 70% mpaka 100% yatsimikiziridwa. Poyerekeza ndi mtengo wa SpO₂ wa m'mitsempha womwe umayesedwa ndi CO-Oximeter, deta yolondola imapezeka. Cholakwika cha SpO₂ chimayendetsedwa pa 2%, ndipo cholakwika cha kutentha chimayendetsedwa pa 0.1℃, chomwe chingapangitse kuyeza molondola kwa SpO₂, kutentha, ndi kugunda kwa mtima. , Kuti akwaniritse zosowa za muyeso wa akatswiri.

Kusankha njira yoyezera ya MedLinket yotsika mtengo komanso yolondola pamsika, ndikukhulupirira kuti idzakondedwa ndi ogwiritsa ntchito mwachangu.