Thermoelectric Energy Harvesting For Wireless Sensor Systems in Aircraft
(0) The use of structural health monitoring in the aerospace industry has many benefits including improved safety,reduced maintenance and extended aircraft lifecycles.A major focus of current research in this area is the development of wireless sensor nodes which rely on batteries as a power source,severely limiting the product lifespan.This paper presents the results of work carried out to examine the feasibility of replacing or supplementing existing battery power supplies using thermoelectric energy conversion from ambient temperature differences in aircraft.An average power demand of lmW over a typical sensor duty cycle is identified for current wireless sensor hardware.Temperature differentials between the wing fuel tanks and external air are determined and a theoretical model for thermoelectric energy harvesting potential is developed.Results indicate that average power outputs sufficient for the intended application of 6.6-22mW could be achieved during flight,based on a commercially available thermoelectric module of 30×30×4.1mm.An experimental investigation of the performance of this module when subjected to appropriate temperature conditions,using a Ranque-Hilshe vortex tube to generate easily controlled temperatures to-25℃ is described.Excellent consistency is demonstrated between theoretical predictions and experimental results,confirming the accuracy of the theoretical model.
Structural health monitoring energy harvesting thermoelectric wireless sensor
C A Featherston K M Holford G Waring
Cardiff School of Engineering,Cardiff University,Queens Buildings,The Parade,Cardiff,CF24 3AA,UK
国际会议
The 8th International Conference on Damage Assessment of Structures(DAMAS 2009)(第八届结构损伤评价国际学术会议)
北京
英文
487-494
2009-08-03（万方平台首次上网日期，不代表论文的发表时间）