Table 3 Sensor data collected from each wearable device.
Sensor | Units/Range | Sampling Rate |
|---|---|---|
Earable prototype (one per ear) | ||
Accelerometer | g {−2:+2} | 100 Hz |
Gyroscope | °/s {−500:+500} | 100 Hz |
PPG - green, infrared, and red channels | — | 100 Hz |
Zephyr Bioharness 3.0 chest band | ||
Heart Rate | beats per minute {25:240} | 1 Hz |
Breathing Rate | breaths per minute {3:70} | 1 Hz |
Core Temperature | degrees {10:60} | 1 Hz |
Posture | degrees from vertical {−180:180} | 1 Hz |
Activity vector magnitude units | g {−16:16} | 1 Hz |
Breathing Rate Amplitude | mV {0.25:15} | 1 Hz |
Heart Rate Variability | ms {0:65534} | 1 Hz |
ECG Amplitude | mV {0.25:15} | 1 Hz |
