CCSS-CPS: Collaborative: If the Bridges Can Talk: Toward Autonomous Structure Health Monitoring for Civil Infrastructure

研究的目的是开发完全自主的结构健康监测（SHM）系统，该系统由有机集成在结构内的传感器组成，没有导线和外部电源。该方法的核心是基于多功能压电传感器的智能骨料，它可以将环境能量转换为电能，调制用于通信的应力波有用信息，并产生和接收用于检测结构缺陷的应力波。在智能上，该项目将通过以下方式推进关于混凝土构件通信的知识：i）不同负载条件下SA收发器和混凝土信道的测量驱动表征，以及ii）混凝土信道中声学通信的调制方案设计。该项目旨在开发一个整体的系统解决方案，通过：i）能源收集和存储模块的开发，结合低功耗电路，ii）能源感知任务调度的设计和评估。拟议的研究预计将在科学，教育和社会产生深远的广泛影响。我们基于系统的研究整合了对硬件，算法和架构的创新研究，以实现下一代网络系统。它还将教育活动整合到现实生活中的基础设施建设、通信系统和网络中。在短期内，为通信和能量收集开发的基本构建模块可以帮助扩展现有的基于无线的电池供电系统，使这些系统更具容错性和能源效率。从长远来看，随着技术的成熟，项目成果可以为全自主SHM系统的广泛集成提供动力，从而提高公共安全并降低维护成本。

The objective of the research is to develop fully autonomous Structural Health Monitoring (SHM) systemconsisting of sensors organically integrated within the structure, free of wire leads and external power sources. Central to the proposed approach are the multi-functional piezoelectric transducer-based smart aggregates, which can transform ambient energy to electricity power, modulate useful information on stress waves for communication, and generate and receive stress waves for detection of structural defects.Intellectually, the project will advance the knowledge regarding communication over concrete conduitsthrough: i) Measurement-driven characterization of SA transceivers and concrete channels under differentloading conditions, and ii) Design of modulation schemes for acoustic communications in concrete channels. The project aims to develop a holistic system solution through: i) the development of energy harvesting and storage modules, in conjunction with low-power circuits, and ii) Design and evaluation of energy-aware taskscheduling.The proposed research is expected to generate far-reaching broader impacts in science, education, andsociety. Our systems-based research integrates innovative research on hardware, algorithms, andarchitectures to enable the next generation of cyber systems. It also integrates educational activities in real-life infrastructure building, communications systems, and networking. In the near term, the basic building blocks developed for communication and energy harvesting can help extend existing wireless-based,battery powered systems, making these systems more fault tolerant and energy efficient. In the long term,the project outcomes can provide impetus for wide-spread integration of fully autonomous SHM systems asthe technology matures, leading to improved public safety and reduced maintenance costs.