Design and implementation of a soil profile probe powered by air and soil temperature differences
Design and implementation of a soil profile probe powered by air and soil temperature differences
复制标题
由空气和土壤温差驱动的土壤剖面探头的设计与实现
DOI：
10.1088/1742-6596/1407/1/012015
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发表时间：
2019
期刊：
影响因子：
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通讯作者：
Kawahara Yoshihiro
中科院分区：
文献类型：
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作者：
Ikeda Natsuki;Shigeta Ryo;Shiomi Junichiro;Kawahara Yoshihiro
在本文中，我们提出了一种实现无电池土壤剖面探头的新方法，该探头利用近地表空气和地下土壤之间的温差作为其电源。地下土壤的温度变化比近地表空气的温度变化慢，因此在一天的大部分时间里，近地表空气与地下土壤之间存在较大的温差。我们开发了一种由热电发电机 (TEG) 驱动的传感器原型，可直接将这种温差转化为电能。使用真实的现场数据进行模拟，结果表明我们的原型可以收获平均几十到几百微瓦的功率。由于土壤剖面探头的典型传感间隔为 1 小时，因此平均功耗（例如德州仪器 CC2650）约为 5 µW，远低于预期的收获能量。此外，原型机的实验实现结果证明，当近地表空气与地下土壤之间的温差仅为3 K（远低于实际田间的平均温差）时，测得的输出功率超过80 µW。
In this paper, we present a novel approach to realizing a battery-free soil pro le probe that uses the temperature difference between the near-surface air and the underground soil as its power source. Temperature changes in the underground soil are slower than that in the near-surface air, and thus a large temperature difference exists between the near-surface air and the underground soil for most of the day. We develop a sensor prototype driven by a thermoelectric generator (TEG) that directly converts this temperature difference into electricity. Simulations are performed using real eld data, and results show that our prototype can harvest an average of several tens to several hundreds of microwatts. Because the typical sensing interval of a soil pro le probe is 1 h, the average power consumption (eg, for a Texas Instruments CC2650) is about 5 µW, which is much lower than the expected amount of harvested energy. Furthermore, the results of an experimental implementation of the prototype proved that when the temperature difference between the near-surface air and the underground soil is only 3 K, which is much lower than the average temperature difference in an actual eld, the measured output power exceeds 80 µW.
薄膜基底上共面板电容器实现宽范围土壤湿度剖面探测
DOI：
10.1109/icsens.2015.7370633
发表时间：
2015
期刊：
2015 IEEE SENSORS
影响因子：
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作者：
Yasutomo Shirahama;Ryo Shigeta;Y. Kawahara;T. Asami;Yuki Kojima;K. Nishioka
通讯作者：
K. Nishioka