Maxim Integrated MAXREFDES103, Руководство пользователя

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Data Format of the Log File
Table 3. Data Table Column Definitions for the Log File (PPG_*.csv)
Log File Headings Description
Time Timestamp in minutes, seconds, and tenths of seconds (MM:SS.T)
Sample Count Data index ranging from 0 to 255 for monitoring if samples are dropped
during Bluetooth transmission
Green Count Green counts detected by photodiode 1
Green2 Count Green counts detected by photodiode 2
IR Count IR counts
Red Count Red counts
X Axis Acceleration (g) Acceleration in x-axis, in unit of g
Y Axis Acceleration (g) Acceleration in y-axis, in unit of g
Z Axis Acceleration (g) Acceleration in z-axis, in unit of g
Operating Mode 0: Continuous HRM and continuous SpO
2
1: Continuous HRM and one-shot SpO
2
2: Continuous HRM
3: One-shot HRM
4: One-shot HRM and one-shot SpO
2
5: Activity tracking
6: SpO
2
calibration
Heart Rate (bpm) Heart rate, in unit of beats per min
HR Confidence (%) Heart-rate algorithm extraction confidence; a threshold confidence >85% is
recommended
RR R-to-R peak interbeat interval time (ms) of the QRS heart beat wave
RR Confidence (%) R-to-R confidence level, 0 to 100%
Activity 0: Rest
1: Other
2: Walk
3: Run
4: Bike
5: Rhythmic
R Value SpO
2
R value (R is defined in Maxim Application Note 6845 )
SPO2 Confidence (%) SpO
2
confidence level; 0 to 100%
SPO2 (%) SpO
2
value; 0 to 100%
SPO2 Percent Complete SpO
2
percent complete (only applicable for one-shot mode); 0 to 100%
Low Signal Quality 0: Good SpO
2
signal quality
1: Low SpO
2
signal quality
Motion Flag 0: Little or no motion
1: Excessive motion
WSPO2 Low Pi 0: Normal Perfusion Index
1: Low Perfusion Index
Unreliable R 0: Measurement of SpO
2
R is reliable
1: Measurement of SpO
2
R is not reliable
SPO2 State 0: LED adjustment
1: Computation
2: Success
3: Timeout
SCD State Skin contact state:
0: No decision
1: Off skin
2: Contact with object
3: On skin
SAMPLE Time Timestamp in seconds