An Integrated Hybrid Energy Harvester for Autonomous Wireless Sensor Network Nodes

Table 4

Cumulative energy flows through the subcomponents of hybrid EH-based autonomous WSN NODE and Router at different time of the day.

Real-time deployment	WSN NODE					WSN Router
Time on the day of operation	Energy flow (in kilojoules)
	NODE consume	Discharge from battery	Solar EH produce	Chemical EH produce	Hybrid EH produce	Router consume	Discharge from battery	Solar EH produce	Chemical EH produce	Hybrid EH produce
Discharge before dawn; 00:00:00–07:15:30	0.318	0.469	0.017	1.150	1.167	0.661	0.602	0.017	1.150	1.150
Transition; 07:15:30–09:10:25	0.407	0.533	0.261	1.442	1.703	0.837	0.693	0.261	1.442	1.450
Recharge; 09:10:25–17:30:20	0.768	0.533	6.517	2.718	9.234	1.600	0.693	6.517	2.718	4.695
Saturation; 17:30:20–19:15:25	0.843	0.573	6.782	2.983	9.765	1.746	0.753	6.783	2.983	4.993
Transition; 19:15:25–20:18:30	0.890	0.648	6.788	3.149	9.937	1.840	0.847	6.788	3.149	5.160
Discharge; 20:18:30–00:00:00	1.045	0.884	6.798	3.694	10.491	2.159	1.147	6.797	3.694	5.705