Thermoelectric Generator-Based System for Energizing Low-Power Communication and Geolocation Electronics

Mamdouh Eldaly, Ashish Pokharel, Michael Petralia, Runar Unnthorsson, R. Dell
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Abstract

A small-scale thermoelectric generator (TEG) system produces a power of 1.43 W at a temperature differential between the thermoelectric module (TEM) surfaces of 70.00°C. This can cold-start a GSM locator and broadcast coordinates using an SMS message. Ultra-low power off-the-shelf electronics are combined to produce a reliable cellular signal and generate the coordinates, eliminating the need for dedicated GPS modules and reducing the total power consumption. A supercapacitor-based charging system was designed to store charge from the TEMs and discharge a constant 5.2 V to power the electronics. The system requires approximately 60 seconds from a cold start to send geographic coordinates. Designs for several cold blocks, used to generate the temperature differential for the TEMs, were investigated, including designs utilizing phase-change material (PCM) and water.
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基于热电发生器的低功耗通信和地理定位电子供电系统
小型热电发生器(TEG)系统在热电模块(TEM)表面温差为70.00°C时产生1.43 W的功率。这可以冷启动GSM定位器并使用SMS消息广播坐标。超低功耗的现成电子设备结合在一起,产生可靠的蜂窝信号并生成坐标,从而消除了对专用GPS模块的需求,并降低了总功耗。设计了一种基于超级电容器的充电系统,用于存储tem的电荷,并恒定放电5.2 V,为电子设备供电。系统从冷启动到发送地理坐标大约需要60秒。研究了几种用于产生tem温差的冷块的设计,包括使用相变材料(PCM)和水的设计。
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