A Multi-lead ECG Acquisition Device Base on Bluetooth Microcontroller

This study proposed the design of a multi-lead ECG wearable device based on Bluetooth microcontroller. The main parts include the ECG sensing electrodes and the ECG acquisition hardware circuit. ECG signals from three leads of I, II, and V1 can be recorded by the sensing electrodes completely and steadily. The hardware circuit is designed to implement signal conversion and data transmission. Two sampling rates in software program: 100Hz and 400Hz, are available for this device. This device satisfies the real requirement of small size, hand-held and real-time acquisition. The experimental results show, the device can provide good-quality ECG signals.