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

测量桥梁的地震响应是低功耗无线传感器网络的一项重要功能。当前这一代无线传感器网络的过去经验表明，地震已经击中了一座装有仪表的桥梁，而网络完全错过了它，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。 本项目的研究目标是验证一种具有抢先触发能力的无线传感器网络能够捕捉地震过程中和震后桥梁的临界动力响应，并进行分布式模态识别，从而提高桥梁监测系统损伤表征的灵活性和能耗效率。该项目的影响将在推进发现，多学科合作，教学和培训。 拟议的研究将使桥梁监测以前不可能通过传统的方法，这有助于保护社会通过变革性的改进方法，及时检测桥梁对地震的反应。

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.