应用于光纤传感网络的热电发生器设计与研究

Design and research of thermoelectric generator for optical fiber sensor network

研制并测试了用于光纤海底地震传感网络节点的热电能量收集系统。基于碲化铋热电材料,制作了用于光纤传感器的热电发生器(TEG),建立了热电模型并进行了验证。提出了一种将TEG输出的能量收集并利用的能量管理电路。详细介绍了该系统的设计思想、电路原理图和模拟水下环境实验。实验数据表明:所制作的TEG能够以2.67%的效率将热能直接转换成电能,设计的能量管理电路能够以23.09%的效率将电能收集并利用。该研究结果对延长光纤海底节点工作时间、增加系统可靠性有重要意义。

A thermoelectric energy harvesting system applied in sensor node for fibre-optic seabed seismographs is researched,fabricated and tested.A thermoelectric generator(TEG)applied for fiber-optic sensor is fabricated based on bismuth telluride thermoelectric material,and the thermoelectric model is established and verified.An energy management circuit for gathering and using energy output by TEG is proposed.The design idea,circuit schematics,and simulation underwater environment experiments are introduced in detail.Experimental data shows that the produced TEG can directly convert thermal energy into electrical energy with an efficiency of 2.67%,and the designed energy management circuit can collect and utilize electrical energy with an efficiency of 23.09%.The research results are significance for extending the working time of optical fiber submarine nodes and increasing system reliability.