{"id":35439,"date":"2019-10-31T22:04:21","date_gmt":"2019-10-31T19:04:21","guid":{"rendered":"https:\/\/prohoster.info\/blog\/device-manager-prodlit-mis-do-ustrojstv\/"},"modified":"2019-10-31T22:04:21","modified_gmt":"2019-10-31T19:04:21","slug":"device-manager-prodlit-mis-do-ustrojstv","status":"publish","type":"post","link":"https:\/\/prohoster.info\/sl\/blog\/administrirovanie\/device-manager-prodlit-mis-do-ustrojstv","title":{"rendered":"Upravitelj naprav. Podalj\u0161ati MIZ do naprav","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

\"Upravitelj
\nV avtomatiziranem medicinskem centru se uporablja vrsta razli\u010dnih naprav, katerih delo mora upravljati medicinska informacijska sistem (MIS), ter naprav, ki ne prejemajo ukazov, ampak morajo prenesti rezultate svojega dela v MIS. Vse naprave imajo razli\u010dne mo\u017enosti povezave (USB, RS-232, Ethernet itd.) in na\u010dine interakcije. Podpirati vse v MIS je prakti\u010dno nemogo\u010de, zato je bila razvita programska plast DeviceManager (DM), ki za MIS nudi enoten vmesnik za postavljanje nalog napravam in pridobivanje rezultatov.
\n<\/a><\/noindex>
\n\"Upravitelj
\nZa pove\u010danje odpornosti sistema DM je bil razdeljen na niz programov, name\u0161\u010denih na ra\u010dunalnikih v medicinskem centru. DM se deli na glavni program in niz pluginov, ki izvajajo interakcijo s specifi\u010dno napravo in po\u0161iljajo podatke v MIS. Na spodnji sliki je prikazana splo\u0161na struktura interakcije z DeviceManagerjem, MIS in napravami.<\/p>\n

\"Upravitelj
\nNa strukturi interakcije MIS z DeviceManagerjem so prikazani 3 na\u010dini delovanja pluginov:<\/p>\n

    \n
  1. Plugin ne prejema nobenih podatkov iz MIS in po\u0161ilja podatke od naprave, ki so pretvorjeni v razumljiv format (ustreza napravi tipa 3 na zgornji sliki).<\/li>\n
  2. Plugin prejme kratko (po \u010dasu izvajanja) nalogo iz MIS, na primer tiskanje na tiskalniku ali skeniranje slike, jo izvr\u0161i in po\u0161lje rezultat v odgovoru na zahtevo (ustreza napravi tipa 1 na zgornji sliki).<\/li>\n
  3. Plugin prejme dolgo nalogo iz MIS, na primer izvesti preiskavo ali izmeriti kazalnike, v odgovor po\u0161lje status sprejemanja naloge (postopek naloge se lahko zavrne v primeru napake v zahtevi). Po izvr\u0161itvi naloge se rezultati pretvorijo v razumljiv format za MIS in prenesejo v ustrezne vmesnike po svoji vrsti (ustreza napravi tipa 2 na zgornji sliki).<\/li>\n<\/ol>\n

    \nGlavni program DM za\u017eene, inicializira, ponovni za\u017eene v primeru nepri\u010dakovane zaustavitve (padca) in kon\u010da vse plugine ob zaklju\u010dku dela. Sestava pluginov na vsakem ra\u010dunalniku je posebna, zagonijo se samo potrebni, ki so navedeni v nastavitvah. <\/p>\n

    Vsak vti\u010dnik predstavlja samostojni program, ki sodeluje z glavno programsko opremo. Ta opredelitev vti\u010dnika omogo\u010da stabilnej\u0161e delovanje, zahvaljujo\u010d neodvisnosti vseh primerkov vti\u010dnikov in glavne aplikacije pri obravnavi napak (\u010de se pojavi kriti\u010dna napaka, zaradi katere vti\u010dnik preneha delovati, to ne bo vplivalo na druge vti\u010dnike in glavno aplikacijo). En vti\u010dnik omogo\u010da delo z napravami iste vrste (pogosto istega modela), pri tem pa lahko nekateri vti\u010dniki komunicirajo le z enim napravo, drugi pa z ve\u010d. Za povezovanje ve\u010d naprav istega tipa z enim DM se uporablja zagon ve\u010d primerkov enega vti\u010dnika.<\/p>\n

    \"Upravitelj
    \nZa razvoj DM je bilo uporabljeno orodje Qt, ker omogo\u010da v ve\u010dini primerov abstraktno delovanje ne glede na konkretno operacijsko sistem. To je omogo\u010dilo podporo delovanju na ra\u010dunalnikih z operacijskimi sistemi Windows, Linux in MacOS ter enonaplatnikih Raspberry. Edina omejitev pri izbiri operacijskega sistema za razvoj vti\u010dnikov je prisotnost gonilnikov in\/ali posebne programske opreme za dolo\u010deno napravo.<\/p>\n

    Interakcija med vti\u010dniki in glavno aplikacijo poteka prek stalno aktivnega QLocalSocket z imenom konkretnega primerka vti\u010dnika, po protokolu, ki smo ga zasnovali. Izvedba komunikacijskega protokola z obeh strani je bila realizirana v obliki dinami\u010dne knji\u017enice, kar je omogo\u010dilo, da so nekateri vti\u010dniki razvijali druge dru\u017ebe, ne da bi razkrili popolno interakcijo z glavno aplikacijo. Notranja logika delovanja lokalnega socketa omogo\u010da glavni aplikaciji, da takoj izve za morebitno napako z uporabo signala o prekinitvi povezave. Ob aktivaciji tega signala se ponovno za\u017eene problemati\u010dni vti\u010dnik, kar omogo\u010da bolj neproblemati\u010dno obravnavo kriti\u010dnih situacij.<\/p>\n

    Interakcijo med MIS in DM smo se odlo\u010dili zgraditi na osnovi HTTP protokola, saj MIS deluje na osnovi spletnega stre\u017enika<\/a>, na katerem je la\u017eje po\u0161iljati in sprejemati zahteve po tem protokolu. Prav tako je mogo\u010de razlikovati te\u017eave, ki so se lahko pojavile pri nalaganju ali izvajanju nalog naprav na podlagi odgovornih kod. <\/p>\n

    V naslednjih \u010dlankih bo na primeru ve\u010d kabinetov diagnosti\u010dnega centra predstavljeno delovanje DM in nekaterih vti\u010dnikov.
    \n
    Izvor:     habr.com<\/a><\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"

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