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. 2015 May 22;15(5):11993–12021. doi: 10.3390/s150511993

Table 4.

Energy consumption according to different subsystems of sensor node i.

Operation	Energy Consumption
Data sensing	$E_{s s_{i}} (b)$ = $b V_{i n p} I_{s s} T_{s s}$
Data register	$E_{r e g_{i}} (b)$ = $b V_{i n p} (I_{w r} T_{w r} + I_{r d} T_{r d})$
TX and RX	$E_{t x_{i}} (b, d_{i j})$ = $b E_{c i r c} + b d_{i j}^{n} E_{p a m p}$
State shifting	$E_{s h_{i}}$ = $T_{A} V_{i n p} [C_{N} I_{A} + (1 - C_{N}) I_{S}]$