1. Projekt „ESSNBS“ Niš, November 4 th – 7 th, 2012 - 1 - DAAD Energy Harvesting and Wireless Sensor Nodes Velibor Škobić

2. Projekt „ESSNBS“ Niš, November 4 th – 7 th, 2012 - 2 - DAAD Graduate work Industrial wireless networks Industrial networks  wireless  wired Wireless network - ZigBee Energy consumption monitoring

3. Projekt „ESSNBS“ Niš, November 4 th – 7 th, 2012 - 3 - DAAD Small Systems Simulation Symposium 2012 Solar Energy Harvesting for Wireless Sensor Nodes, Velibor Škobić, Branko Dokić, Željko Ivanović Solar energy harvesting  small size solar panel  ambient environment condition  temperature measurement

4. Projekt „ESSNBS“ Niš, November 4 th – 7 th, 2012 - 4 - DAAD Solar Energy Harvesting for Wireless Sensor Nodes Wireless sensors network multiple sensors on a large area communication between nodes (communication protocol) management and collection of values (temperature, pressure, etc..) Wireless sensor nodes low-power small size low cost mobile and battery powered

5. Projekt „ESSNBS“ Niš, November 4 th – 7 th, 2012 - 5 - DAAD Solar Energy Harvesting for Wireless Sensor Nodes Problem of nodes power supply energy harvesting Alternative sources of energy solar energy, temperature differences, vibrations, etc. Sollar cells (outdoors at noon) 15mW / cm3 Piezoelectric (shoe inserts) 330μW / cm3 Vibration (small microwave oven) 116μW / cm3 Thermoelectric ( gradient) 40μW / cm3 Acoustic noise (100dB) 960nW / cm3

6. Projekt „ESSNBS“ Niš, November 4 th – 7 th, 2012 - 6 - DAAD Solar Energy Harvesting for Wireless Sensor Nodes In this paper, we propose a system for collecting solar energy in the ambient environment. For system supplying is used battery and small size of solar panel.

7. Projekt „ESSNBS“ Niš, November 4 th – 7 th, 2012 - 7 - DAAD Solar Energy Harvesting for Wireless Sensor Nodes battery - only for starting node solar panel – for harvesting energy boost convertor – charging capacitor super capacitor – storage of energy

8. Projekt „ESSNBS“ Niš, November 4 th – 7 th, 2012 - 8 - DAAD Solar Energy Harvesting for Wireless Sensor Nodes Solar energy harvesting small panel – indoor condition (from the calculator "GENIE“, 20μW) ZigBee node ATMEL ATZB-24-A2 supply current  active mode (19 mA)  idle mode (6 μA)

9. Projekt „ESSNBS“ Niš, November 4 th – 7 th, 2012 - 9 - DAAD Solar Energy Harvesting for Wireless Sensor Nodes Nodes state active period T A (execution of operation) Inactive T N (energy harvesting) Results active period 10 ms minimum 95 s of inactive state for collecting energy enough time that during the active period, node measured temperature and send information over the network

10. Projekt „ESSNBS“ Niš, November 4 th – 7 th, 2012 - 10 - DAAD Thank you for your attention !!!