Measurement System for Wireless Heart Rate and Respiration Monitoring

U ovom diplomskom radu istražene su i uspoređene različite metode mjerenja i analize EKG signala u svrhu praćenja srčanog ritma. Također su istražene i različite metode mjerenja i praćenja ritma disanja. Ritam disanja mjeren je preko promjene impedancije prsnog koša. Takva metoda naziva se impedancijska pneumografija. Dizajniran je i razvijen elektronički sustav koji omogućuje kontinuirano praćenje srčanog ritma i ritma disanja. Elektronički sustav sastoji se od mikrokontrolera niske potrošnje STM32L433CC, analogno digitalnog pretvornika ADS1292R koji služi za mjerenje EKG signala i signala disanja, Bluetooth modula nRF8001 koji služi za komunikaciju i upravljanje te mikro SD kartice koja služi a pohranu podataka. Posebna pažnja posvećena je niskoj potrošnji i malim dimenzijama sustava. Dimenzije tiskane pločice su 43 mm x 21 mm. Razvijeni sustav napaja se iz Li-Po akumulatora kojeg je moguće puniti.In this master thesis, different methods of measuring and analysing ECG signals were studied and compared for the purpose of measuring and monitoring heart rate. Different methods of measuring and monitoring of respiration rate were also studied. Respiration rate was measured through change in electrical impedance of thorax. That method is called impedance pneumography. For the purpose of this master thesis, electronic system was developed that allows continuous monitoring of heart rate and respiration rate. Electronic system consists of a low-power microcontroller STM32L433CC, analog-to-digital converter ADS1292R which is used for impedance pneumography and for measuring ECG signal, nRF8001 module for communication and control, and micro SD card for data storage. Particular attention was paid to low consumption and small dimensions of the system. The dimensions of the printed circuit board are 43 mm x 21 mm. The developed system is powered from a Li-Po rechargeable battery