Implementation of wireless ECG measurement system in ubiquitous health-care environment

In this study, the measurement system was developed to measure ECG conveniently in an ubiquitous health care environment. The new-developed system consisted of hardware and software. The hardware system eliminated the inconvenience like connecting and disconnecting electrodes and extended the life span of these electrodes. According to Lead I ECG measurement, the metal mesh electrodes were attached on the both armrests of a chair. The result of the mesh mental electrodes was investigated as compared with the measured result of common disposable electrodes, Ag/AgCl. The ECG signal was detected by using high-input-impedance bio-amplifier, and then pass the filter. The measured continuous time signal was converted into digital signal using the microprocessor, and transmitted to PC by bluetooth wireless communication The digitalized ECG signal was displayed, compressed and recorded on the PC. In order to demonstrate the reliability of the system, the result was compared with Ag/AgCl electrode, skin-electrode impedance and measured signals, and then, the 10 subjects' ECG signals of this research were measured each position, and compact experiment was able to be performed. Key-Words: ECG, electrode, ubiquitous, Bluetooth, wireless, LZW