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Razvoj aplikacije za določevanje srčnega utripa z digitalno kamero : magistrsko delo magistrskega študijskega programa II. stopnje StrojništvoPisar, ŽigaČloveško telo z vsakim srčnim ciklom črpa kri po celotnem telesu. Kontrakcija in relaksacija srčne mišice ustvarjata časovno spremenljivo in ponovljivo tlačno razliko znotraj kardiovaskularnega ... sistema. Brezkontaktna fotopletizmografija (rPPG) je novejša, cenovno ugodna in neinvazivna optična metoda zaznavanja volumetričnih krvnih sprememb po telesu. Ker človeška kri zelo dobro absorbira določen del spektra bele svetlobe, lahko s primernim senzorjem zaznamo in spremljamo majhne, očem nevidne spremembe v intenziteti absorbirane ali odbite svetlobe. V primerjavi z elektrokardiografijo in konvencionalnimi fotopletizmografi, ki zahtevajo fizičen stik, zazna rPPG z uporabo oddaljene potrošniške digitalne kamere intenziteto odbite svetlobe na koži obraza ali drugje. S procesiranjem dobljenih podatkov lahko določimo pulzni signal, posredno utrip srca, in izdelamo fiziološko sliko pacienta. Z ozirom na novi, zelo nalezljivi koronavirus, ki je povzročil globalno zdravstveno krizo, smo razvili mobilni robot za brezkontaktno določevanje utripa srca, podprtega s sistemom za oddaljeno nastavljanje ostrine. Mobilni robot smo nadgradili z namensko strojno opremo in izvedli eksperiment v treh svetlobnih pogojih: v notranjih prostorih, zunaj in pod studijsko osvetlitvijo. Meritve so pokazale, da lahko že v sobnih pogojih, s pomočjo algoritma rPPG, izmerimo frekvenco srca z napako, manjšo od 1 BPM. Aplikacija mobilnega robota z rPPG ni samo dobra alternativa konvencionalnim merilnikom pulza, temveč v časih, ko so fizični kontakti močno odsvetovani, nudi tudi možnost oddaljenega spremljanja utripa srca z nizkocenovno kamero in namenskim vgradnim sistemom.Type of material - master's thesis ; adult, seriousPublication and manufacture - Ljubljana : [Ž. Pisar], 2021Language - slovenianCOBISS.SI-ID - 78562051
Author
Pisar, Žiga
Other authors
Podržaj, Primož
Topics
magistrske naloge |
fotopletizmografija |
mobilni robot |
rPPG |
Raspberry Pi |
frekvenca srca |
master thesis |
photoplethysmography |
mobile robot |
rPPG |
Raspberry Pi |
pulse rate
Library/institution |
City | Acronym | For loan | Other holdings |
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Faculty of Mechanical Engineering, Ljubljana | Ljubljana | FSLJ |
reading room 1 cop.
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JCR | SNIP | JCR | SNIP | JCR | SNIP | JCR | SNIP |
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Database name | Field | Year |
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Links to authors' personal bibliographies | Links to information on researchers in the SICRIS system |
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Pisar, Žiga | |
Podržaj, Primož | 17059 |
Source: Personal bibliographies
and: SICRIS
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