Vibrations powered LoRa sensor: An electromechanical energy harvester working on a real bridge
Vibrations powered LoRa sensor: An electromechanical energy harvester working on a real bridge
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振动驱动的 LoRa 传感器：在真实桥梁上工作的机电能量采集器
DOI：
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发表时间：
2016
期刊：
影响因子：
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通讯作者：
F. Cottone
中科院分区：
文献类型：
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作者：
F. Orfei;C. B. Mezzetti;F. Cottone
在本文中，我们提出了一种无电池LoRa无线传感器来监测道路状况，测量沥青的温度和水或雨的存在。该系统由基于Halbach配置的电磁振动能量采集器提供的能量供电。LoRa收发器需要比短距离收发器更多的能量[1]，但它可以从远处监控桥梁等大型结构。电磁发电机代表了关于压电材料的使用的成本有效且易于扩展的解决方案。我们提出的能量采集器，功率调节电路和无线节点的电子设备的设计。我们还讨论了系统的能量预算，以发送有关桥梁上的沥青状况的数据。
In this paper we present a battery less LoRa wireless sensor to monitor the road condition measuring the temperature of the asphalt and the presence of water or rain. This system is powered by the energy provided by an electromagnetic vibration energy harvester based on Halbach configuration. A LoRa transceiver require much more energy than a short range one [1] but it enables the monitoring of a large structures like a bridge from distance. Electromagnetic generator represents a cost effective and easily scalable solution with respect the use of a piezoelectric material. We propose the design of the energy harvester, of the power conditioning circuitry and of the electronics of the wireless node. We also discuss the energy budget of the system to send data about the condition of the asphalt on the bridge.