D5.4: Multi-sensor system integrated into wearable fabrics
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MOBISERV
FP7 248434
The monitoring of the ECG and the respiration is sensitive to the movement artefact. A
quality index can be extracted from the processing algorithm to indicate a degree of
confidence of the result.
Table 14: Quality index
Quality
Description
0
Very poor quality
255
Excellent quality
The 3-axis accelerometer measures the acceleration in an orthogonal referential. The level of
dynamic activity and the posture can be extracted from these three signals. Five levels of
activities have been defined.
Table 15: Activity classification
Activity
classification
Activity type
0
Other
1
Lying
2
Standing/Sitting
3
Walking
4
Running
In addition to the signals that can be streamed, the device can respond to the requests from
the manager about the energy expenditure during the last 45 minutes. Thus the application
can know if the subject is doing the activity or the exercise expected to be done. Another
parameter to be controlled is the detection of the fall of the subject. This information has to
be polled periodically to detect if the subject has fallen down.