A Wirelessly Preemptive Sensing System for Quasi-Realtime Earthquake Monitoring of Bridges

桥梁地震反应测量是低功耗无线传感器网络的一项重要功能。当前一代无线传感器网络过去的经验表明，地震袭击了一座仪表式桥梁，网络完全错过了这一点，因为它要么处于节能睡眠模式，要么正在传输地震前收集的环境数据。本课题的研究目的是验证这样一种假设，即能够被抢先触发的无线传感器网络能够捕获桥梁在地震中和地震后的临界动力响应，并且能够进行分布式模态识别，从而提高桥梁监测系统的损伤识别的敏捷性和能量消耗的效率。该项目的影响将是促进发现、多学科合作、教学和培训。拟议的研究将使桥梁监测成为以前无法用传统方法实现的，这有助于通过对及时检测桥梁对地震的反应的方法的变革性改进来保护社会。

Measuring the earthquake response of a bridge is an important function for low power wireless sensor networks (WSNs). Past experience with the current generation of WSNs demonstrated that earthquakes have hit an instrumented bridge and the network completely missed it because it was either in energy-saving sleep mode or transferring ambient data that was collected prior to the earthquake. The research objectives of this project are to test the hypothesis that a wireless sensor network capable of being preemptively triggered can capture the critical dynamic response of a bridge during and after an earthquake, and that it can conduct distributed modal identification so that the agility of damage characterization and the efficiency of energy consumption of the bridge monitoring system can be improved. The impact of the project will be in advancing discovery, multi-disciplinary collaboration, teaching, and training. The proposed research will enable bridge monitoring not previously possible by conventional methods, which contributes to protecting society through transformative improvements in methods for timely detection of bridge response to earthquakes.