scholarly journals Method and application of using unmanned aerial vehicle for emergency investigation of single geo-hazard

2017 ◽  
Author(s):  
Haifeng Huang ◽  
Jingjing Long ◽  
Wu Yi ◽  
Qinglin Yi ◽  
Guodong Zhang ◽  
...  
Keyword(s):  
Unmanned Aerial Vehicle ◽  
Route Planning ◽  
Implementation Process ◽  
Site Investigation ◽  
Three Gorges Reservoir Area ◽  
High Definition ◽  
Large Area ◽  
Fast Processing ◽  
Aerial Vehicle ◽  
Time Strength

Abstract. In recent years, the unmanned aerial vehicle (UAV) began to be widely used in the emergency investigation of major natural hazards in a large area, but less for the single geo-hazard. Based on a number of successful practices in the Three Gorges Reservoir Area, China, a complete UAV-based emergency investigation method of single geo-hazard is concluded. Firstly, a customized UAV system consisting of multi-rotor UAV subsystem, aerial photography subsystem, ground control subsystem and ground surveillance subsystem is described in detail. Then, the implementation process which includes four steps, i.e., indoor preparation, site investigation, site fast processing and applying, and indoor comprehensive processing and applying is elaborated, and two investigation schemes including automatic and manual in the site investigation step are put forward. Moreover, some key techniques and methods, e.g., the ground controls points (GCPs) layout and measurement, the route planning, the flight and shooting process control, and the Structure from Motion (SfM) photogrammetry processing are explained. Finally, three applications are given. Practice shows that, using the UAV for emergency survey of single geo-hazard can not only greatly reduce the time, strength and risks of the on-site work, but also provide high-accuracy, high-definition valuable information to well support the emergency treatment.

scholarly journals A method for using unmanned aerial vehicles for emergency investigation of single geo-hazards and sample applications of this method

2017 ◽  
Vol 17 (11) ◽  
pp. 1961-1979 ◽  
Author(s):  
Haifeng Huang ◽  
Jingjing Long ◽  
Wu Yi ◽  
Qinglin Yi ◽  
Guodong Zhang ◽  
...  
Keyword(s):  
Unmanned Aerial Vehicles ◽  
Flight Control ◽  
Route Planning ◽  
Implementation Process ◽  
Site Investigation ◽  
Three Gorges Reservoir Area ◽  
Ground Control ◽  
Aerial Vehicles ◽  
Fast Processing ◽  
Key Techniques

Abstract. In recent years, unmanned aerial vehicles (UAVs) have become widely used in emergency investigations of major natural hazards over large areas; however, UAVs are less commonly employed to investigate single geo-hazards. Based on a number of successful investigations in the Three Gorges Reservoir area, China, a complete UAV-based method for performing emergency investigations of single geo-hazards is described. First, a customized UAV system that consists of a multi-rotor UAV subsystem, an aerial photography subsystem, a ground control subsystem and a ground surveillance subsystem is described in detail. The implementation process, which includes four steps, i.e., indoor preparation, site investigation, on-site fast processing and application, and indoor comprehensive processing and application, is then elaborated, and two investigation schemes, automatic and manual, that are used in the site investigation step are put forward. Moreover, some key techniques and methods – e.g., the layout and measurement of ground control points (GCPs), route planning, flight control and image collection, and the Structure from Motion (SfM) photogrammetry processing – are explained. Finally, three applications are given. Experience has shown that using UAVs for emergency investigation of single geo-hazards greatly reduces the time, intensity and risks associated with on-site work and provides valuable, high-accuracy, high-resolution information that supports emergency responses.

Development of Wire Suspended Robot System (ARANEUS 2.0) for Bridge Inspection

10.29007/zw9k ◽  
2020 ◽  
Author(s):  
Kazuhide Nakata ◽  
Kazuki Umemoto ◽  
Kenji Kaneko ◽  
Ryusuke Fujisawa
Keyword(s):  
Unmanned Aerial Vehicle ◽  
Concrete Surface ◽  
Wire Length ◽  
High Definition ◽  
Bridge Inspection ◽  
Robot System ◽  
Inspection Method ◽  
Aerial Vehicle ◽  
The Wire

This study addresses the development of a robot for inspection of old bridges. By suspending the robot with a wire and controlling the wire length, the movement of the robot is realized. The robot mounts a high-definition camera and aims to detect cracks on the concrete surface of the bridge using this camera. An inspection method using an unmanned aerial vehicle (UAV) has been proposed. Compared to the method using an unmanned aerial vehicle, the wire suspended robot system has the advantage of insensitivity to wind and ability to carry heavy equipments, this makes it possible to install a high-definition camera and a cleaning function to find cracks that are difficult to detect due to dirt.

scholarly journals Assessing the Usefulness of Unmanned Aerial Vehicle (UAV) for Monitoring Spatial Plan: Legal and User Perspective of Bogor Regency, Indonesia

2017 ◽  
Vol 4 (2) ◽  
pp. 257
Author(s):  
Dinar Maria
Keyword(s):  
Land Use ◽  
Unmanned Aerial Vehicle ◽  
Field Survey ◽  
Current Approach ◽  
Large Area ◽  
User Perspective ◽  
Urban Dynamics ◽  
Aerial Vehicle ◽  
Asset Monitoring ◽  
Spatial Plan

Monitoring is a critical process in managing the land use plan. However, the current approach to collecting data related to the land use has a shortcoming. First, field survey has limitation due to the high number of resources needed, i.e., people, funds, time. Second, the participatory approach has limitation due to the lack of involvement of the citizens. Unmanned Aerial Vehicle (UAV) has developed in recent years and it has been used in the various field, i.e., urban dynamics, asset monitoring, and so on. The usage of UAV to monitor urban changes has some advantages. First, it can cover a large area and used fewer resources compared with the field survey, in term of man hour, funds and time. Second, it may provide data with a high spatial resolution, which gives a broad possibility for analysing urban features. This research aimed to assess the usefulness of UAV in monitoring the spatial plan of Bogor Regency, Indonesia. We developed indicator according to the legal and user perspective. Our research has shown that UAV may reduce the time and resources needed to monitor the spatial plan. However, the UAV has limitation since it is difficult to indicate the changes of the land use. Therefore, we suggest incorporating with the field survey.

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