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Development of slope deformation monitoring system based on tilt sensors with low-power wide area network technology and its application
Journal of Civil Structural Health Monitoring ( IF 3.6 ) Pub Date : 2021-06-03 , DOI: 10.1007/s13349-021-00494-9
Aulia Dharma Putra , Hikaru Toda , Achmad Hafidz , Kouji Matsuba , Yuuichi Kimikado , Yoshinori Takahashi , Shinji Tsuzuki , Naoki Kinoshita , Hideaki Yasuhara

A simple monitoring method for observing slope movement and deformation can be performed with tilt sensors. A more efficient monitoring method, using a type of wireless communication called LPWA (low-power wide area) network technology, has also recently become available. In the present study, a monitoring system was developed that combines tilt sensors and LPWA network technology for measuring the movement of slopes and sending the information through wireless communication. First, radio wave propagation experiments were conducted to find the proper location for the gateway device of the monitoring system. Then, in March 2018, the developed system that consists of tilt and water-level sensors and the wireless communication of LPWA was installed at an observation site. Since the installation, the data from the tilt sensors have been successfully collected through LPWA, and a slope failure was unexpectedly observed at the observation site during the Heavy Rain Event of July 2018, which caused severe disasters, particularly from western Japan to the Tokai region. Using the data from the tilt sensors, the rainfall data, and the groundwater level, the slope failure was analysed. A site investigation was conducted, and the shear strength parameter was examined using back analysis method. In conclusion, the developed system using sensors and LPWA has continued to efficiently monitor the movement of the targeted slope, but the collection of additional data will be required to increase the reliability of the system.



中文翻译:

基于低功耗广域网技术的倾斜传感器边坡变形监测系统的研制及应用

使用倾斜传感器可以执行一种用于观察斜坡运动和变形的简单监测方法。一种更有效的监控方法,使用一种称为 LPWA(低功率广域)网络技术的无线通信,最近也变得可用。在本研究中,开发了一种监测系统,它结合了倾斜传感器和 LPWA 网络技术,用于测量斜坡的运动并通过无线通信发送信息。首先,进行无线电波传播实验,为监控系统的网关设备找到合适的位置。然后,在 2018 年 3 月,由倾斜和水位传感器以及 LPWA 无线通信组成的开发系统安装在一个观测站点。自安装以来,倾斜传感器的数据已通过 LPWA 成功收集,并且在 2018 年 7 月的暴雨事件期间,在观测地点意外地观察到斜坡崩塌,这造成了严重的灾害,特别是从日本西部到东海地区。使用来自倾斜传感器的数据、降雨数据和地下水位,分析了边坡失稳。进行了现场调查,并使用反分析方法检查了剪切强度参数。总之,使用传感器和 LPWA 开发的系统继续有效地监测目标斜坡的运动,但需要收集额外的数据以提高系统的可靠性。在 2018 年 7 月的暴雨事件期间,观测点意外地观察到斜坡崩塌,这造成了严重的灾害,特别是从日本西部到东海地区。使用来自倾斜传感器的数据、降雨数据和地下水位,分析了边坡失稳。进行了现场调查,并使用反分析方法检查了剪切强度参数。总之,使用传感器和 LPWA 开发的系统继续有效地监测目标斜坡的运动,但需要收集额外的数据以提高系统的可靠性。在 2018 年 7 月的暴雨事件期间,观测点意外地观察到斜坡崩塌,这造成了严重的灾害,特别是从日本西部到东海地区。使用来自倾斜传感器的数据、降雨数据和地下水位,分析了边坡失稳。进行了现场调查,并使用反分析方法检查了剪切强度参数。总之,使用传感器和 LPWA 开发的系统继续有效地监测目标斜坡的运动,但需要收集额外的数据以提高系统的可靠性。进行了现场调查,并使用反分析方法检查了剪切强度参数。总之,使用传感器和 LPWA 开发的系统继续有效地监测目标斜坡的运动,但需要收集额外的数据以提高系统的可靠性。进行了现场调查,并使用反分析方法检查了剪切强度参数。总之,使用传感器和 LPWA 开发的系统继续有效地监测目标斜坡的运动,但需要收集额外的数据以提高系统的可靠性。

更新日期:2021-06-03
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