Media Pembelajaran Sistem Pengukuran Aktivitas Elektrik Jantung, Keadaan Oksigen dalam Darah, dan Tekanan Darah dengan Metode Non-Invasive

Abstract

Biomedical is a multidisciplinary field that applies various methods, knowledge and technology, to solve problems in medicine and biology. In the course of Designing Electronic Systems at the SWCU Computer and Electronic Engineering Faculty there are materials that study biomedical. But in practice there is no tool that can give a simple picture of biomedical materials. So in this thesis realized a biomedical learning media. Broadly speaking, the designed tool consists of a box measuring 30cm long, 25cm wide, and 10cm high. At the top of the box is a 2.8 "touchscreen LCD graph to select the menu and viewer of the data processed by Arduino Mega 2560. There are three menus, namely EKG, PPG, and Blood Pressure. The ECG uses the AD8232 EKG module to measure the electrical activity of the heart in the form of ECG and heart rate signals. Measurement of oxygen saturation in blood using pulse oximetry method by utilizing sensors consisting of photodiode, red LED and infrared LED. Blood pressure measurement using oscillometry method using MPX5050GP pressure sensor to read pressure from handcuff. From the tests performed, for measuring the electrical activity of the heart by using the AD8232 EKG module produces the same signal form as the Riester EKG comparator and has a maximum error of 20.59% for heart rate measurements. For measurement of oxygen level in blood have maximal error 14,28% and 23,33% for heart rate measurement. Blood pressure measurement by comparing the mercury pressure gauge has a maximum error of 15.83% for systolic pressure and 15% for diastolic pressure. The practice manual can help students understand biomedical materials.