Digital Sensing Platform with High Accuracy Time Synchronization Function for Management of Buildings and Cities
Digital Sensing Platform with High Accuracy Time Synchronization Function for Management of Buildings and Cities
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发表时间：
2019
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通讯作者：
N. Kurata
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作者：
N. Kurata
- 本文提出了一个多样化的和强大的数字传感平台，作为一个实用的智能传感系统的维护管理老化的建筑和城市。将高精度时间信息添加到测量数据中，以获得具有时间同步的数字感测数据集，用于风险的多模态分析。作为第一步，本文介绍了一种传感器设备的开发，用于在民用基础设施上进行高精度的时间同步感测，例如使用数字高精度加速度传感器的桥梁和建筑结构。在传感器设备中安装超高精度时钟，诸如芯片级原子钟（CSAC），并且使用其时间测量精度，实现用于对数字传感器的输出加时间戳的机制。芯片级原子钟的测量精度太高，因此如果传感器设备的CPU添加时间戳，则无法执行跟踪。因此，提供了用于添加时间戳的专用现场可编程门阵列（FPGA）。使用振动台对开发的传感器装置进行了测试，并通过比较多个传感器装置和伺服型加速度传感器的测量结果来检查时间同步性能。
- In this paper, a diverse and robust digital sensing platform is proposed as a practical smart sensing system for maintenance management of ageing buildings and cities. High-accuracy time information is added to measurement data to obtain sets of digital sensing data with time synchronization for use in multimodal analysis of risk. As a first step, this paper describes the development of a sensor device for performing high accuracy time synchronization sensing on civil infrastructure, such as bridges and building structures using a digital high-accuracy acceleration sensor. An ultra high-accuracy clock, such as a Chip Scale Atomic Clock (CSAC) is mounted in the sensor device, and using its time measurement accuracy, a mechanism is implemented for time stamping the output of the digital sensor. The measurement accuracy of the chip scale atomic clocks is too high, so if the CPU of the sensor device adds the time stamp, tracking cannot be performed. Therefore, a dedicated Field-Programmable Gate Array (FPGA) for adding the time stamp is provided. Tests were performed on the developed sensor device using a shaking table, and the time synchronization performance was checked by comparing the measurement results of multiple sensor devices and a servo type acceleration sensor.