The Effectiveness of a Wireless Sensor Network System for Landslide Monitoring

Sangseom Jeong,Junghwan Kim,Junyoung Ko

doi:10.1109/access.2019.2960570

Sangseom Jeong, Junghwan Kim + Show 1 more

Open Access

https://doi.org/10.1109/access.2019.2960570

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Journal: IEEE Access	Publication Date: Jan 1, 2020
Citations: 35	License type: CC BY 4.0

Affiliation: Yonsei University, Seoul Institute

Abstract

In this paper, the application of a WSN (Wireless Sensor Network) for landslide monitoring was studied. The WSN system consists of a sensor node for collecting and transmitting data using the IEEE 802.14e standard and a gateway for processing and transmitting the data to the final server. The topology of the sensor network adopts a highly flexible and reliable mesh type, and a test bed was built in three locations in Seoul. An instrumentation is done for each sensor node composing of two soil moisture sensors, one tensiometer, and one inclinometer and one rain gauge per test bed. For the estimation of optimal network topology among the sensor nodes, a susceptibility assessment of landslides, the density of trees and a viewshed analysis of the terrain were analyzed. As a result, the network connection worked quite well, and the response of the soil from rainfall was similar to the soil water characteristic curve obtained from laboratory tests. Therefore, a WSN system can be applied to landslide monitoring by collecting reliable data. In addition, the appropriate design method of WSN system for landslide monitoring was proposed.

Highlights

Local heavy rains have been occurring frequently in South Korea due to climate change, leading to an increase in the number of landslides
We investigated the factors affecting the wireless communication range in the test beds for the deployment of wireless sensor network (WSN) sensor nodes
SUMMARY AND CONCLUSION In this paper, a test beds-based study was conducted to demonstrate the feasibility of data acquisition using WSN system for landslide monitoring

Summary

INTRODUCTION

Local heavy rains have been occurring frequently in South Korea due to climate change, leading to an increase in the number of landslides. Due to the large and remote areas involved, it is necessary to apply low-cost, low-power-based wireless sensor network (WSN) technology This can facilitate and ease power supply, manpower input, and measurement data collection. F. SUSCEPTIBILITY ASSESSMENT OF LANDSLIDES To make a reasonable network topology among the sensor nodes, a landslide susceptibility analysis was performed using a GIS-based YS-slope model [28], which can take both rainfall infiltration and groundwater flow into account. SUSCEPTIBILITY ASSESSMENT OF LANDSLIDES To make a reasonable network topology among the sensor nodes, a landslide susceptibility analysis was performed using a GIS-based YS-slope model [28], which can take both rainfall infiltration and groundwater flow into account This model is a landslide analysis model using physical methods such as commercial programs (e.g., SINMAP, SHALSTAB, TRIGRS models), and an improved hydrological model and geotechnical model were adopted.

PROPOSED DESIGN METHOD OF WSN SYSTEM FOR LANDSLIDE MONITORING

RESULTS AND DISCUSSION

DEPLOYMENT OF THE SENSOR NODE

SUMMARY AND CONCLUSION