Biomedical Engineering Reference
In-Depth Information
Table 6.2
Power and energy consumption of different data communication scenarios
Scenario
A
B
C
Reference
Figure
6.19
a
Figure
6.19
b
Figure
6.19
c
UWB transmitter (mW)
0.15
3.1
0.6
Narrowband receiver (mW)
0.64
9.9
9.92
Micro-controller (mW)
0.68
10.48
10.52
Total power (mW)
1.47
23.48
21.04
Energy per useful data bit (nJ/bit)
27.22
54.45
10.89
Fig. 6.21 Percentage power
consumption for different
components of the sensor
node for three scenarios given
in Table
6.2
where E
bit
is the energy consumption per useful transmit data bit, I
TX
is the current
consumption during transmission, V
s
is the supply voltage, T
TX
is the time duration
of data transmission and B
TX
is the total number of bits that are transmitted. It
should be noted that power consumption of data sensing using either the analog
front-end or digital data input depends on a particular application and are not
