RF-Powered Low-Energy Sensor Nodes for Predictive Maintenance in Electromagnetically Harsh Industrial Environments.
RF-Powered Low-Energy Sensor Nodes for Predictive Maintenance in Electromagnetically Harsh Industrial Environments.
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DOI：
10.3390/s21020386
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发表时间：
2021-01-08
期刊：
影响因子：
--
通讯作者：
Costanzo A
中科院分区：
文献类型：
--
作者：
Paolini G;Guermandi M;Masotti D;Shanawani M;Benassi F;Benini L;Costanzo A
这项工作描述了无线传感器网络的设计、实施和验证，该网络用于在金属丰富、电磁恶劣的环境中进行预测性维护和远程监控。能量在2.45 GHz无线提供，采用三个共置有源天线系统，该系统采用共形形状设计，使其可以按需为位于非视距(NLOS)和难以到达位置的传感器节点供电。这使得无需定期更换定制传感器节点的电池，这些传感器节点设计紧凑、低功耗和坚固耐用。假设该系统在汽车领域的开发，已经在真实场景中进行了测量活动，即汽车的引擎室。我们的工作表明，一个最大有效各向同性辐射功率为27dBm的射频光源(照明器)能够在最坏的情况下传输4.8mJ的能量，在最坏的情况下，照明器和节点之间的距离(NLOS)为112 cm，给传感器节点充满电所需的能量不到170MJ。我们还展示了在最坏的情况下，传输的功率如何允许节点每隔60个S工作一次，其中的操作包括采样1个S的加速度计数据、提取统计信息、传输20字节的有效载荷，以及使用极稳健的远程(LORA)通信技术接收3字节的确认。活动周期的能量要求在1.45至1.65 MJ之间，而休眠模式的电流消耗低于150 nA，从而实现目标的无电池操作，占空比高达1.7%。
This work describes the design, implementation, and validation of a wireless sensor network for predictive maintenance and remote monitoring in metal-rich, electromagnetically harsh environments. Energy is provided wirelessly at 2.45 GHz employing a system of three co-located active antennas designed with a conformal shape such that it can power, on-demand, sensor nodes located in non-line-of-sight (NLOS) and difficult-to-reach positions. This allows for eliminating the periodic battery replacement of the customized sensor nodes, which are designed to be compact, low-power, and robust. A measurement campaign has been conducted in a real scenario, i.e., the engine compartment of a car, assuming the exploitation of the system in the automotive field. Our work demonstrates that a one radio-frequency (RF) source (illuminator) with a maximum effective isotropic radiated power (EIRP) of 27 dBm is capable of transferring the energy of 4.8 mJ required to fully charge the sensor node in less than 170 s, in the worst case of 112-cm distance between illuminator and node (NLOS). We also show how, in the worst case, the transferred power allows the node to operate every 60 s, where operation includes sampling accelerometer data for 1 s, extracting statistical information, transmitting a 20-byte payload, and receiving a 3-byte acknowledgment using the extremely robust Long Range (LoRa) communication technology. The energy requirement for an active cycle is between 1.45 and 1.65 mJ, while sleep mode current consumption is less than 150 nA, allowing for achieving the targeted battery-free operation with duty cycles as high as 1.7%.
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DOI：
10.1109/jsac.2018.2872615
发表时间：
2019-01-01
影响因子：
16.4
作者：
Clerckx, Bruno;Zhang, Rui;Poor, H. Vincent
通讯作者：
Poor, H. Vincent
影响因子：
20.6
作者：
Kim, Sangkil;Vyas, Rushi;Tentzeris, Manos M.
通讯作者：
Tentzeris, Manos M.
影响因子：
3.9
作者：
Sung, Guo-Ming;Chung, Chao-Kong;Syu, Jin-Yu
通讯作者：
Syu, Jin-Yu
影响因子：
7.7
作者：
Trevisan, Riccardo;Costanzo, Alessandra
通讯作者：
Costanzo, Alessandra
影响因子：
7.7
作者：
Magno, Michele;Boyle, David;Benini, Luca
通讯作者：
Benini, Luca