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首页> 外文会议>Conference on Active and passive smart structures and integrated systems; 20090309-12; San Diego, CA(US) >Corrosion-Enabled Powering Approach for Structural Health Monitoring Sensor Networks
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Corrosion-Enabled Powering Approach for Structural Health Monitoring Sensor Networks

机译：结构健康监测传感器网络的腐蚀供电方法

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摘要

Structural health monitoring consists of an integrated paradigm of sensing, data interrogation, and statistical modeling that results in a strategy to assess the performance of a structure. Sensor networks play a central role in this paradigm, as such networks typically perform much of the actuation, data acquisition, information management, and even local computing necessary to enable the overall implementation of the strategy, increasingly in a wireless mode. In many applications power provision can become a limiting factor, as the conventional strategy for wireless networks is a battery. However, batteries require replacement, as their useful shelf lives often do not exceed the intended service of their host structures. Energy harvesting has emerged as a class of potential network powering solutions whereby one form of energy available on the structure is harvested and converted to useful electrical energy. The objective of this work is to investigate the harvesting of energy from galvanic corrosion that typically occurs naturally in many structures. Specifically, this study considers corrosion between magnesium and graphite rods embedded in a concrete structure immersed in seawater. The energy was evaluated by connecting a .1F capacitor and measuring the voltage charge over finite time intervals during the corrosion process. A carbon fiber admixture was introduced to the concrete host to improve electrical conductivity, and the power increase was calculated from voltage measurements. The investigation concludes that the voltage levels achieved may be naturally integrated with a booster circuit to provide CMOS voltage levels suitable for sensor network powering in some applications.
机译：结构健康监测包括感测，数据查询和统计建模的集成范式，该范式可得出评估结构性能的策略。传感器网络在此范例中起着核心作用，因为此类网络通常会执行越来越多的无线模式下所需的许多促动，数据采集，信息管理乃至本地计算，以全面实施该策略。在许多应用中，电源供应可能成为限制因素，因为无线网络的常规策略是电池。但是，电池需要更换，因为它们的有效保存期限通常不会超过其主机结构的预期使用寿命。能量收集已成为一类潜在的网络供电解决方案，通过该解决方案，可以收集结构上可用的一种形式的能量并将其转换为有用的电能。这项工作的目的是研究通常在许多结构中自然发生的电腐蚀所产生的能量。具体而言，本研究考虑了浸入海水中的混凝土结构中嵌入的镁和石墨棒之间的腐蚀。通过连接一个0.1 F电容器并在腐蚀过程中的有限时间间隔内测量电压电荷来评估能量。将碳纤维外加剂引入混凝土主体中以改善导电性，并通过电压测量计算出功率增加。研究得出的结论是，所获得的电压电平可以自然地与升压电路集成在一起，以提供适用于某些应用中传感器网络供电的CMOS电压电平。

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