Abstract
This paper realizes the design of wearable bio-signals multi-sensing nodes through ADS1292 series ECG acquisition chip, LMT70 IoT temperature sensing chip, MPU6050 spatial motion sensing chip and HC-06 Bluetooth transmission chip, which includes real-time monitoring of three-lead acquisition of biological ECG signals, real-time display of heart rate changes and ECG, real-time monitoring of biological body surface temperature and motion state, wireless communication of collected data. The median filtering algorithm and mathematical morphology are used to eliminate the baseline drift and the 50Hz trap to eliminate the power frequency signal interference. The design has the advantages of high common mode rejection ratio, high signal-to-noise ratio, low noise, low power consumption and low cost, which meets the needs of modern portable networked monitoring devices.
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