Performance Evaluation of High-Accuracy Time Synchronization Sensor Device Using Indoor GNSS Time Information Delivery System for Structural Health Monitoring of Buildings and Civil Infrastructures
Performance Evaluation of High-Accuracy Time Synchronization Sensor Device Using Indoor GNSS Time Information Delivery System for Structural Health Monitoring of Buildings and Civil Infrastructures
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发表时间：
2020
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通讯作者：
N. Kurata;Tsutomu Sano;M. Ishii;Satoru Ishida;Masaki Tanaka
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作者：
N. Kurata;Tsutomu Sano;M. Ishii;Satoru Ishida;Masaki Tanaka
-这项研究和开发的目的是实现结构健康监测，以提高建筑物和民用基础设施维护的效率，并进行观测，为应对地震等自然灾害做准备。最困难和最有趣的问题是实现廉价的时间同步测量。在建筑物或民用基础设施中安装大量的传感器，并采集测量数据以保证时间同步是非常必要的。虽然全球导航卫星系统(GNSS)的时间信息一般只能在户外获得，但作者设计了一个能够在室内使用GNSS时间信息的系统。该系统可以利用现有的电视同轴电缆向建筑物传递时间信息。作者进一步开发了一种能够接收室内GNSS时间信息并将高精度时间信息添加到测量数据中的传感器设备。本文介绍了一种传感器装置的研制，该装置通过在室内传输GNSS时间信息的系统，将高精度的时间信息添加到测量数据中。从振动台实验结果中验证了所开发的传感器装置的性能，该装置配备了接收基于GNSS信号的时间信息的机制。结果表明，该方法可应用于建筑物和民用基础设施的结构健康监测和地震观测。
—The purpose of this research and development is to realize structural health monitoring for increased efficiency in the maintenance of buildings and civil infrastructures, and observations to prepare for natural disasters, such as earthquakes. The most difficult and interesting issue is the realization of inexpensive time-synchronized measurements. It is necessary to install numerous sensors in a building or civil infrastructure and to acquire measured data whose time synchronization is ensured. Although Global Navigation Satellite System (GNSS) time information is generally only available outdoors, the authors designed a system capable of using GNSS time information indoors. This system can deliver time information to a building by using existing TV coaxial cables. The authors further developed a sensor device able to receive indoor GNSS time information and to add high-accuracy time information to measured data. This paper describes the development of a sensor device that adds high-accuracy time information to measured data by using a system to deliver GNSS time information indoors. The performance of the developed sensor device equipped with a mechanism for receiving GNSS signal-based time information was verified from the results of a shaking table experiment. It was shown that it can be applied to structural health monitoring of buildings and civil infrastructure and seismic observation.