Pengembangan Perangkat EKG 12 Lead dan Aplikasi Client-Server untuk Distribusi Data

Electrocardiograph is device for measuring electrical activity of heart. Electrocardiograph displays electrocardiogram signal (ECG). For monitoring ECG, at least need one ECG lead meanwhile for standard clinical ECG need 12 lead. For realization of 12 lead ECG devices, it is need strategy to reduce number of hardware to make dimension of ECG device smaller. To solve this problem, we use multiplexing method for ECG device development. Combination of 12 lead ECG signal is controlled by the multiplexer 4051 through microcontroller sequentially. Digital data of ADC is sent serially to the server computer and can be viewed on client computer that connected to the network. From the results obtained indicate that analog devices have been successfully acquired ECG signals Lead I to Lead V6. With 5 ms switching time, the 12 lead ECG signal can not be displayed simultaneously. The signal can be acquired properly with 5 seconds switching time, but the whole of ECG signals can not be displayed simultaneously.