  Since cadiovascular disease (CVD) posts a heavy threat to people's health,
long-term electrocardiogram (ECG) monitoring is of great value for the
improvement of treatment. To realize remote long-term ECG monitoring, a
low-power wireless wearable ECG monitoring device is proposed in this paper.
The ECG monitoring device, abbreviated as ECGM, is designed based on
ferroelectric microprocessor which provides ultra-low power consumption and
contains four parts-MCU, BLE, Sensors and Power. The MCU part means circuit of
MSP430FR2433, the core of ECGM. The BLE part is the CC2640R2F module applied
for wireless transmission of the collected bio-signal data. And the sensors
part includes several sensors like BMD101 used for monitoring bio-signals and
motion of the wearer, while the Power part consists of battery circuit,
charging circuit and 3.3V/1.8V/4.4V power supply circuit. The ECGM first
collects ECG signals from the fabric electrodes adhered to wearers' chest,
preprocesses the signals to eliminate the injected noise, and then transmit the
output data to wearers' hand-held mobile phones through Bluetooth low energy
(BLE). The wearers are enabled to acquire ECGs and other physiological
parameters on their phones as well as some corresponding suggestions. The
novelty of the system lies in the combination of low-power ECG sensor chip with
ferroelectric microprocessor, thus achieving ultra-low power consumption and
high signal quality.
