TY - GEN
T1 - Power supply for wireless sensor systems
AU - Pobering, Sebastian
AU - Schwesinger, Norbert
PY - 2008
Y1 - 2008
N2 - The power supply of wireless sensor systems is an\ issue of growing importance since replacement of batteries is expensive over the sensor lifetime. We will present an energy harvesting system which generates electrical energy from flowing media without any rotating parts. Available energy densities in flowing media are in the range of 256W/m2 in air at a flow velocity of 10m/s and 1600kW/m2 in water at 2m/s, respectively. The generator consists of piezoelectric bimorph cantilevers with very low maintenance requirements. The cantilevers are oscillating in a von Kármán's vortex street induced by a flow disturbance. Modeling and analytical calculations give parameters for a design optimization which have been verified by a finite element simulation. The working principle has been proved using a functional model of the generator. Maximum voltages of 0.83V have been achieved at air flow velocities of 35m/s. The cantilevers delivered up to 108μW at a velocity of 45m/s.
AB - The power supply of wireless sensor systems is an\ issue of growing importance since replacement of batteries is expensive over the sensor lifetime. We will present an energy harvesting system which generates electrical energy from flowing media without any rotating parts. Available energy densities in flowing media are in the range of 256W/m2 in air at a flow velocity of 10m/s and 1600kW/m2 in water at 2m/s, respectively. The generator consists of piezoelectric bimorph cantilevers with very low maintenance requirements. The cantilevers are oscillating in a von Kármán's vortex street induced by a flow disturbance. Modeling and analytical calculations give parameters for a design optimization which have been verified by a finite element simulation. The working principle has been proved using a functional model of the generator. Maximum voltages of 0.83V have been achieved at air flow velocities of 35m/s. The cantilevers delivered up to 108μW at a velocity of 45m/s.
UR - https://www.scopus.com/pages/publications/67650002742
U2 - 10.1109/ICSENS.2008.4716534
DO - 10.1109/ICSENS.2008.4716534
M3 - Conference contribution
AN - SCOPUS:67650002742
SN - 9781424425808
T3 - Proceedings of IEEE Sensors
SP - 685
EP - 688
BT - 2008 IEEE Sensors, SENSORS 2008
T2 - 2008 IEEE Sensors, SENSORS 2008
Y2 - 26 October 2008 through 29 October 2009
ER -