D5.4: Multi-sensor system integrated into wearable fabrics
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MOBISERV
FP7 248434
LED status
Mode
Description
RECORDING & STREAMING
ECG quality indication,
Memory writing,
Streaming with viewer
STREAMING
Streaming with viewer
CHARGING
Connected through USB
CHARGING / CLOCK not set
Connected through USB but the
device clock is not set
BATTERY FULLY CHARGED
Connected through USB
4.6
Monitoring signs and data processing
The vital signs ECG, respiration, and the activity 3-axis acceleration are the primary signals
acquired. A channel number, size (number of bits), a format and a sampling rate are
associated to each of them. Table 12 gives the definition of these primary signals.
Table 12: Communication channels, acquired signals (raw data)
Number
Name
Size [bits]
Format
Rate [Hz]
1
ECG(AI)
12
Signed
250
6
Acc. X
16
Signed
25
7
Acc. Y
16
Signed
25
8
Acc. Z
16
Signed
25
13
Respiration
16
Signed
25
After processing some features can be extracted from the primary signals. In the same way, a
channel number, processed data name, size, format and period rate is associated to each
processed data.
Table 13: Communication channels, algorithm channels (processed data)
Number
Name
Size [bits]
Format
Rate
Period
Unit
129
ECG: quality
8
Unsigned
5.5s
See Quality index
132
ECG: HR
8
Unsigned
5.5s
Beat/min
133
ECG: RR
16
Unsigned
∼
1s
139
Activity:
classification
8
Unsigned
5s
See Activity
classification
141
Resp.: BR
8
Unsigned
15s