20.500.12556/RUL-85926 Ultrazvočni spirometer Ultrasound spirometer V magistrskem delu je opisan postopek razvoja brezžičnega ultrazvočnega spirometra. V prvih poglavjih je opisana spirometrija, postopek merjenja in zakaj so spirometrične meritve pomembne. Opisani so različni tipi spirometrov in njihove lastnosti. Bolj podrobno je opisan ultrazvočni spirometer. V naslednjih poglavjih je podrobneje opisan razvoj elektronike in programske opreme spirometra. Pri razvoju elektronike je opisan proces izbiranja namenskega integriranega vezja in izbira ultrazvočnega senzorja. Podana je tudi blokovna shema prototipa in njegovo tiskano vezje. Za opisom razvoja elektronike sledi opis razvoja programske opreme, ki vsebuje opis operacijskega sistema in delovanje vseh opravil. Prikazani so procesi za zajem podatkov, pošiljanje in prejemanje podatkov preko bluetooth povezave in kontrole celotnega sistema. Na koncu sledijo še testi in rezultati naprave. Prikazani so testi električnih lastnosti vezja in točnosti meritve. Za oceno točnosti končnega prototipa smo izvedli primerjavo z referenčnim spirometrom in preverili skladnost s standardi, določenimi za spirometre. Izdelan spirometer je deloval v primernem merilnem območji in je bil popolnoma brezžičen ter energetsko varčen. V primerjavi z referenčnim spirometrom ni dosegel točnosti, ki jo določajo standardi za spirometre, vendar se jim je dobro približal. The master thesis describes the process of developing a wireless ultrasound spirometer. The first section describes spirometry, measuring methods and the importance of spirometric measurements. Different types of spirometers and their properties are described. An ultrasound spirometer is described more in detail. In the following sections the development of electronics and software of the ultrasound spirometer are described. Within the development of the electronics the process of selecting the integrated circuit and ultrasound transceiver is shown together with the block diagram of the circuit and the printed circuit board. Afterwards the development of device’s software is presented. In software development the operation system and its tasks are defined. In more detail the processes for data acquisition, sending and receiving data over bluetooth and control of the whole system is explained. In the end the testing and evaluation of the device is described. Different tests such as electrical characteristic of the circuit and the accuracy of the measurement are shown. To estimate the accuracy of the final prototype, we compared it to a reference spirometer and verified its compliance with the spirometer standards. The built spirometer operated in required measurement ranges, operated completely wirelessly and was energy efficient. Compared with the reference spirometer it did not reach the target accuracy specified by the spirometer standards , but it proved to be a robust, reliable and functional prototype device. spirometrija ultrazvočni spirometer časovno digitalni pretvornik namensko integrirano vezje bluetooth povezava spirometry ultrasound spirometer time-to-digital converter dedicated integrated circuit bluetooth connection true false false Slovenski jezik Angleški jezik Magistrsko delo/naloga 2016-09-29 14:20:01 2016-09-29 14:20:03 2022-08-09 10:29:19 0000-00-00 00:00:00 2016 0 0 0000-00-00 NiDoloceno NiDoloceno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 1970-01-01 34697 Cesnik_Miha_-_Ultrazvocni_spirometer.pdf Cesnik_Miha_-_Ultrazvocni_spirometer.pdf 1 1F21586512A0C0FB3B7A5C9E264DBBA2 139fa7bb34a3372659417e5abc21dd027a46e26aad78383a17629b7a32083fee 08c36089-a1b1-11eb-a523-00155dcfd717 20.500.12556/rul/74d1ca56-aa45-43a6-b13a-92491c97b8fd https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=89084 Fakulteta za elektrotehniko 0 0 0