LIAO Yuan, ZHANG Mengxin, LIU Wenhan, et al. Design of low power consumption and portable multi-lead ECG signal acquisition system[J]. 2019, (5): 93-96.
LIAO Yuan, ZHANG Mengxin, LIU Wenhan, et al. Design of low power consumption and portable multi-lead ECG signal acquisition system[J]. 2019, (5): 93-96. DOI: 10.13873/J.1000-9787(2019)05-0093-04.
A low power consumption and portable multi-lead electrocardiogram( ECG) signal acquisition system is designed for the needs of home medical care field. To acquire weak ECG signal
use direct current( DC) coupling method
by bio-potential measurement ADS1298 analog front-end. In analog front-end
the ECG signal is amplified by the programmable instrumentation amplifier
then it is converted into digital signal through 24 bit high-resolution analog-to-digital converter( ADC). The system is controlled by the STM32 F103 microprocessor
and the wireless transmission of ECG signals are achieved by a low power consumption ZigBee. In order to reduce high frequency and common mode interference
the pretreatment circuit
right leg drive and shielded wire drive circuits are designed. The system is powered by lithium battery
it has a small size of 7 cm × 8 cm × 2 cm and low power consumption of 214. 5 m W; Experimental results shows that the ECG signal can be acquired steadily and effectively for a long time by the designed system.