An Autonomous Time Synchronization Sensor Device Using a Chip Scale Atomic Clock for Earthquake Observation and Structural Health Monitoring
An Autonomous Time Synchronization Sensor Device Using a Chip Scale Atomic Clock for Earthquake Observation and Structural Health Monitoring
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发表时间：
2017
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通讯作者：
N. Kurata
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作者：
N. Kurata
本文介绍了一种自主时间同步传感器设备的研究和开发，该设备配备了芯片级原子钟（CSAC），可记录高度准确的时间信息。本研发项目旨在实现地震观测以备灾，结构健康监测以提高建筑物和土木工程结构的维护和管理效率。由于这些原因，需要以高密度在宽区域中安装传感器，并测量具有精确同步的时间信息的数据。建议传感器设备本身保持准确的时间信息，而不依赖于网络或全球定位系统（GPS）信号。因此，在本研究中，开发了一种传感器设备，该设备使用超高精度，超低功耗和超小型（因此，可安装在板上）原子钟（称为CSAC）自主保持准确的时间信息。在本文中，首先，描述自主时间同步和CSAC的概念，并解释通过使用CSAC向传感器数据分配超高精度时间信息的机制。接下来，改进的传感器装置的性能进行了演示和振动台测试，这是进行检查的性能，结果。关键词-时间同步;芯片级原子钟;地震观测;结构健康监测; MEMS
This article describes the research and development directed toward an autonomous time-synchronized sensor device equipped with a chip scale atomic clock (CSAC) that records highly accurate time information. The R & D project presented herein aims to achieve earthquake observation to prepare for disasters and structural health monitoring to improve the efficiency of maintenance and management of buildings and civil engineering structures. For these reasons, it is necessary to install sensors in a wide area at a high density and to measure the data with accurately synchronized time information. It is recommended that the sensor device itself maintains accurate time information without relying on the network or a Global Positioning System (GPS) signal. Therefore, in this study, a sensor device that autonomously maintains accurate time information using an ultra-high precision, ultralow power consuming, and ultra-small (and therefore, loadable on a board) atomic clock, known as CSAC, was developed. In this article, first, the concepts of autonomous time synchronization and CSACs are described, and the mechanism for assigning ultra-high precision time information to the sensor data by using a CSAC is explained. Next, the performance of the improved sensor device is demonstrated and the results of the vibration table test, which was conducted to examine the performance, are presented. Keywords-Time Synchronization; Chip Scale Atomic Clock; Earthquake Observation; Structural Health Monitoring; MEMS