Development of an ambient vibration testing system for dynamic response monitoring of buildings using low-cost wireless sensors

开发环境振动测试系统，使用低成本无线传感器监测建筑物的动态响应

• 批准号: 491554-2015
• 负责人: Bagchi, Ashutosh
• 金额: $ 1.82万
• 依托单位: Concordia University
• 依托单位国家: 加拿大
• 项目类别: Engage Grants Program
• 财政年份: 2015
• 资助国家: 加拿大
• 起止时间: 2015-01-01 至 2016-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=586959
• 关键词: Development; ambient; vibration; testing; system

Ambient vibration testing is an important tool for identifying the dynamic characteristics of a structure. The industry partner, Sensequake is developing new algorithms and software to predict the integrity of the structure as well as its behavior in response to different type of loadings including earthquakes based on in-situ ambient vibration data. Their technology, 3D-SAM, is a three-dimensional seismic assessment method which can reduce the time for sensor-based assessment of a structure drastically. Traditionally wired sensors (e.g. accelerometers) are used for measuring the vibration response of structure. In a structure, such as a tall building, a wired sensing system becomes cumbersome and it limits the number of sensors and the testing configurations. Wireless sensing system presents a significant opportunity which removes the limitations of a wired system and allows for higher density of sensors and/or flexible test configurations. However, low data bandwidth, range issues, limited battery life and higher cost are found to impede the adoption of such systems. This project will focus on low-cost wireless sensors to develop a prototype system for ambient vibration testing and system identification for structure. This will help Sensequake in developing a sustainable solution for structural health monitoring (SHM) and seismic assessment of civil infrastructure (e.g., buildings and bridges), and by combining the developed system with their existing product could place them in a leadership role in these areas. The successful completion of the project will also bring significant benefits to Canada as there is significant seismic hazard in the western (e.g., British Columbia) and eastern (e.g. Quebec) parts of the country with major population centres, and infrastructure around the country is aged and in a deteriorated state, which needs regular monitoring.

环境振动测试是识别结构动力特性的重要工具。这个 行业合作伙伴Senquake正在开发新的算法和软件，以预测结构的完整性 以及基于现场环境的不同类型载荷(包括地震)的响应行为 振动数据。他们的技术3D-SAM是一种三维地震评估方法，可以 大幅减少基于传感器的结构评估时间。传统的有线传感器(例如 加速度计)用于测量结构的振动响应。在一种结构中，如高楼 在建筑物中，有线传感系统变得笨重，并且限制了传感器的数量和测试 配置。无线传感系统提供了一个重要的机会，它消除了 有线系统，并允许更高密度的传感器和/或灵活的测试配置。然而，低数据 带宽、续航距离问题、有限的电池寿命和较高的成本被发现阻碍了此类系统的采用。 该项目将以低成本的无线传感器为重点，开发环境振动测试的原型系统。 以及结构的系统识别。这将帮助Senquake开发可持续的解决方案 民用基础设施(如建筑物和桥梁)的结构健康监测(SHM)和抗震评估， 通过将开发的系统与他们现有的产品相结合，他们可以在 这些区域。该项目的成功完成也将给加拿大带来重大好处，因为 该国西部(如不列颠哥伦比亚省)和东部(如魁北克)地区发生重大地震灾害 拥有主要的人口中心，全国各地的基础设施都很陈旧，状况每况愈下 需要定期监测。