Home // SENSORDEVICES 2019, The Tenth International Conference on Sensor Device Technologies and Applications // View article
Authors:
Narito Kurata
Keywords: Time Synchronization; Chip Scale Atomic Clock; Earthquake Observation; Structural Health Monitoring; Micro Electro Mechanical Systems.
Abstract:
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.
Pages: 53 to 58
Copyright: Copyright (c) IARIA, 2019
Publication date: October 27, 2019
Published in: conference
ISSN: 2308-3514
ISBN: 978-1-61208-745-0
Location: Nice, France
Dates: from October 27, 2019 to October 31, 2019