NeTS-NECO: A Framework for Cooperative Active Sensing in Wireless Structure Health Monitoring

NeTS-NECO：无线结构健康监测中的协作主动传感框架

• 批准号: 0832089
• 负责人: Rong Zheng
• 金额: $ 40万
• 依托单位: University of Houston
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2008
• 资助国家: 美国
• 起止时间: 2008-09-01 至 2013-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0832089&HistoricalAwards=false
• 关键词: NeTS; NECO; Framework; Cooperative; Active

Throughout the life cycle of a civil structure, its serviceability must be assessed in a timely manner. Structural Health Monitoring (SHM) strategies measure structural response and aim to detect, locate, and assess damage produced by severe loading events and environmental deterioration. At the University of Houston, prototype piezoceramics-based smart aggregates (SA) have been designed for concrete structures. Inherited from the property of a PZT, the SA has the unique feature that it can function both as a sensor and an actuator. As an actuator, an SA excites elastic stress waves to propagate through the concrete structure, which can be detected by sensors. Distributed active sensing exhibit different sensing and energy characteristics compared to passive sensing and stand-alone active sensing systems. The goal of this project is the development of a scalable framework and efficient algorithms for cooperative active sensing in wireless SHM systems. The specific objectives are to i) investigate coverage models for active sensing under realistic domain-specific constraints; ii) develop a holistic energy-efficient solution to cooperative active sensing and processing iii) develop, implement and evaluate distributed active sensing solutions for SHMs using PZTs and off-the-shelf wireless components. This work will generate broader impact by closing up the gap between the practices of civil engineering and embedded sensor network community by joining expertise of researchers in both areas to enhance the safety of civil infrastructures of national interest. The interdisciplinary nature of this research lends naturally to a combined engineering and science curriculum development at both undergrad and graduate levels.

在土木结构的整个生命周期中，必须及时评估其适用性。结构健康监测 (SHM) 策略测量结构响应，旨在检测、定位和评估严重荷载事件和环境恶化造成的损坏。休斯顿大学为混凝土结构设计了基于压电陶瓷的智能骨料 (SA) 原型。 SA继承了PZT的特性，具有独特的功能，即它既可以用作传感器，也可以用作执行器。作为执行器，SA 激发弹性应力波在混凝土结构中传播，传感器可以检测到该弹性应力波。与无源传感和独立有源传感系统相比，分布式有源传感表现出不同的传感和能量特性。该项目的目标是开发可扩展的框架和高效的算法，用于无线 SHM 系统中的协作主动传感。具体目标是 i) 研究现实特定领域约束下主动传感的覆盖模型； ii) 开发协作式主动传感和处理的整体节能解决方案 iii) 使用 PZT 和现成的无线组件开发、实施和评估 SHM 的分布式主动传感解决方案。这项工作将通过结合这两个领域的研究人员的专业知识来缩小土木工程实践和嵌入式传感器网络社区之间的差距，从而产生更广泛的影响，以提高符合国家利益的民用基础设施的安全性。这项研究的跨学科性质自然有助于本科生和研究生水平的工程和科学课程的综合开发。