EICO: Energy-Harvesting Long-Range Environmental Sensor Nodes With Energy-Information Dynamic Co-Optimization
EICO: Energy-Harvesting Long-Range Environmental Sensor Nodes With Energy-Information Dynamic Co-Optimization
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DOI：
10.1109/jiot.2022.3178422
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发表时间：
2021-07
影响因子：
10.6
通讯作者：
Shitij Avlani;Dong-Hyun Seo;Baibhab Chatterjee;Shreyas Sen
中科院分区：
文献类型：
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作者：
Shitij Avlani;Dong-Hyun Seo;Baibhab Chatterjee;Shreyas Sen
在实现电池寿命、信息准确性、传输距离和成本等严格设计目标的挑战的推动下，对能量采集型传感器节点进行了深入的研究。当传感器网络需要覆盖广阔的地区，如农田和偏远地区时，远程通信固有的功率密集型特性进一步放大了这一挑战。太阳能是无线传感器节点中常见的一种能源，但由于季节和天气条件的变化导致可用功率的波动，太阳能发电并不可靠。为了解决这些问题，本文提出了一种永久供电的能量采集传感器节点，该节点使用最小尺寸的太阳能电池，并通过动态共同优化能量消耗和信息传输来实现远程通信，称为能量-信息动态联合优化(EICO)。这种能量信息智能是通过基于收割机和电荷存储元件的可用能量总量的信息传输的自适应负载循环来实现的，以优化传感器节点的能量消耗，同时使用传感器内分析(ISA)来最大限度地减少信息损失。这是EICO和ISA支持的第一个1公里连续信息传输速率高达1个包/秒的传感器节点。
Intensive research on energy-harvested sensor nodes has been driven by the challenges in achieving stringent design goals of battery lifetime, information accuracy, transmission distance, and cost. This challenge is further amplified by the inherent power-intensive nature of long-range communication when sensor networks are required to span vast areas, such as agricultural fields and remote terrain. Solar power is a common energy source in wireless sensor nodes, however, it is not reliable due to fluctuations in available power stemming from the changing seasons and weather conditions. This article tackles these issues by presenting a perpetually powered, energy-harvesting sensor node which utilizes a minimally sized solar cell and is capable of long-range communication by dynamically co-optimizing energy consumption and information transfer, termed as energy-information dynamic co-optimization (EICO). This energy-information intelligence is achieved by adaptive dutycycling of information transfer based on the total amount of energy available from the harvester and charge storage element to optimize the energy consumption of the sensor node, while employing in-sensor analytics (ISA) to minimize loss of information. This is the first reported sensor node 1 km at continuous information transfer rates of up to 1 packet/second which is enabled by EICO and ISA.