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Comparison of PPG sensors’ mean DC values for three functional states and used power supplies.
| Sensor Type | Supplying Method | Functional State | ||
|---|---|---|---|---|
| NC | CE | MC | ||
| PPG-EP | 5 V Power bank via USB | 53 mA | 60 mA | 68 mA |
| PPG-PS1 | 5 V Power bank via USB | 18 mA | 26 mA | 30 mA |
| PPG-BLE | 3.7 V Li-Po battery cell | 13.5 mA | 14 mA | 17 mA |
