Table 1 Operation states of a sensor node with corresponding current consumptions, daily activity time of adaptive and non-adaptive schemes
From: Autonomous end-to-end wireless monitoring system for railroad bridges
State | Current consumption - I (mA) | Non-adaptive daily activity time - t (hour/day) | Adaptive daily activity time - t (hour/day) |
|---|---|---|---|
Radio listening | 197 | 5/3600 × 60/T2 × 24 | Nevent × 5/3600 |
Sensing | 170 | Nevent × 380/3600 | |
Data processing | 176 | Nevent × 20/3600 | |
Sleep | 0.3 | 24 - tRadio listening - tSensing – tData processing | |