| 摘要 |
An ultralow power consumption PPG signal acquisition circuit comprising an optical transmitter module and an optical receiver and information processing module. The optical transmitter module comprises light-emitting diode D1 and resistor R1. Light-emitting diode D1 is connected to resistor R1. The optical receiver and information processing module comprises photodiode D2, D/A converter DAC, current-voltage converter I/V, a G amplifier, and A/D converter ADC1. D/A converter DAC is connected to current-voltage converter I/V via resistor R2. Photodiode D2 is connected to current-voltage converter I/V. Current-voltage converter I/V is connected to the G amplifier. The G amplifier is connected to A/D converter ADC1. Also disclosed is a method employing the circuit for PPG signal acquisition. |
