Validation and interpretation of data obtained by the newly developed low-cost Geodetic Integrated Monitoring System (GIMS)

2020 ◽  
Author(s):  
Ela Šegina ◽  
Mateja Jemec Auflič ◽  
Tina Peternel ◽  
Matija Zupan ◽  
Jernej Jež ◽  
...  
Keyword(s):  
Monitoring System ◽  
Low Cost ◽  
Warning System ◽  
Threshold Value ◽  
Rainfall Threshold ◽  
Rain Gauge ◽  
Measuring System ◽  
Integrated Monitoring ◽  
The North ◽  
The Wire

<p>Geodetic Integrated Monitoring System (GIMS) has been developed as a low-cost solution for detecting and measuring ground movements (https://www.gims-project.eu/). The prototype has been tested on the landslide on Potoška planina in the north of Slovenia that has been monitored by the seven GIMS units. These units, consisting of GNSS receiver and inclinometer, provide live monitoring data with millimetric precision. In this paper, the project consortium presents the first results of the prototype measuring system and estimate its applicability in modern landslides monitoring. The GIMS measurements have been validated by the wire crackmeter located at the site. The data were correlated to the groundwater level in a piezometer and to the amount of precipitation detected at the rain gauge. Results of GIMS units show good comparability to the wire crackmeter measurements and increased precision in detecting variations in landslide movements. The latter enables us to precisely define the rainfall threshold value for the particular landslide as crucial information needed for a reliable early warning system.</p><p> </p>

Monitoring landslides movements by the newly developed low-cost Geodetic Integrated Monitoring System (GIMS)

2019 ◽  
Author(s):  
Ela Šegina ◽  
Mateja Jemec Auflič ◽  
Eugenio Realini ◽  
Ismael Colomina ◽  
Michele Crosetto ◽  
...  
Keyword(s):  
Monitoring System ◽  
Low Cost ◽  
Integrated Monitoring

Performance Monitoring on the A˚sgard “A” FPSO as Part of an Integrated Monitoring Strategy

2002 ◽  
Author(s):  
Arne So̸rli ◽  
Kyrre Langnes ◽  
Geert Laagland ◽  
Mike Hastings
Keyword(s):  
Monitoring System ◽  
Performance Monitoring ◽  
Early Stage ◽  
Integrated Monitoring ◽  
The North ◽  
Stage Of Development ◽  
System Supplier ◽  
The North Sea ◽  
Condition Monitoring System ◽  
One Year

An integrated machine condition monitoring system was developed, installed, tested, commissioned and successfully operated on a floating production, storage and offloading vessel (FPSO) in the North Sea. This system combines an existing vibration and process monitoring system with focused performance monitoring capability that has been implemented with the cooperation of the oil company end-user, a thermodynamics specialist consultant and a monitoring system supplier. Implementation of this integrated monitoring system strategy with advanced performance monitoring is partly based on the end-user’s requirements to optimize their operation and maintenance functions to improve competitiveness. The system has already been in use for one year and has demonstrated the ability to detect faults at an early stage of development, such as the compressor degradation and gas turbine fouling described in this paper. The same system has also been implemented in other oil & gas and power applications around the world with similar, positive results.

Time Discriminating Design for High Precision Pulsed TOF Laser Rangefinder

2011 ◽  
Vol 105-107 ◽  
pp. 1951-1956
Author(s):  
Dong Qing Shen ◽  
Jian Yong Chen ◽  
Wan Cai Li ◽  
Hong Jiang ◽  
Zhen Yu Li
Keyword(s):  
Experimental Evidence ◽  
High Precision ◽  
Input Signal ◽  
High Performance ◽  
Low Cost ◽  
Threshold Value ◽  
Experimental Results ◽  
Measuring System ◽  
Laser Rangefinder ◽  
Constant Fraction Discriminator

The purpose of a time discriminator is to decide when the input is something you are interested in. It does this by putting out a logic pulse when the input signal meets an adjustable threshold value. A low cost high performance constant fraction discriminator (CFD) for laser rangefinder using pulsed TOF (time of flight) is proposed with the accuracy been improved. The theory of CFD is deduced and discussed and a distance measuring system has been established and experimental evidence is presented to show the feasibility of solving the time walking error problem to amend the precision and improving the environmental applicability, the distance error of +/-0.5mm was observed in the lab condition. The advantages of this instrument are highlighted and the experimental results are presented.

Low cost 3D early warning system for instable alpine slopes - the Aggenalm Landslide monitoring system

2009 ◽  
Vol 2 (3) ◽  
pp. 221-237 ◽  
Author(s):  
Kurosch Thuro ◽  
Thomas Wunderlich ◽  
Otto Heunecke ◽  
John Singer ◽  
Stefan Schuhbäck ◽  
...  
Keyword(s):  
Monitoring System ◽  
Early Warning ◽  
Early Warning System ◽  
Low Cost ◽  
Warning System ◽  
Landslide Monitoring

Remote Monitoring System for Unattended Electromechanical Equipment Based on Internet

2012 ◽  
Vol 466-467 ◽  
pp. 1176-1180
Author(s):  
Gui Ping Wang ◽  
Er Dong Jia ◽  
Li Min Guan ◽  
Yun Ting Bai ◽  
Xiao Yan Ma
Keyword(s):  
Monitoring System ◽  
Remote Monitoring ◽  
Local Area Network ◽  
Low Cost ◽  
Warning System ◽  
Local Area ◽  
Area Network ◽  
Remote Monitoring System ◽  
Active Server Page ◽  
Electromechanical Equipment

The unattended electromechanical equipments are widely distributed in the harsh environment, which makes it difficult to construct the monitoring system. Therefore, this paper proposes a solution of the remote monitoring system based on Internet, which applies the VLAN (Virtual Local Area Network) technology in constructing the network. The network microprocessor STM32F107 is adopted to design a low-cost remote information terminal. The system software is designed based on B/S (Browser/Server) architecture by ASP (Active Server Page) technology, which implements SCADA (Supervisory Control and Data Acquisition) and pre-warning system for the unattended electromechanical equipments. The application shows that the system is stable, reliable and worth popularizing.

Significant Reduction of Well System Fatigue by Use of Reactive Flex Joint with Integrated Monitoring System

2021 ◽  
Author(s):  
Knut Olav Sønåsen ◽  
Per Thomas Moe ◽  
Morten Hansen ◽  
Dag André Fjeldstad ◽  
Halvor Gustad ◽  
...  
Keyword(s):  
Real Time ◽  
Monitoring System ◽  
Barents Sea ◽  
Bending Moment ◽  
Bending Moments ◽  
Time Data ◽  
Integrated Monitoring ◽  
Cyclic Bending ◽  
Operational Conditions ◽  
The North

Abstract Operators working on shallow and mid-water depths in rough seas are focusing on reducing fatigue in the upper part of well systems during drilling operations. Fatigue is caused by cyclic bending moments due to wave induced riser and vessel motions. The combined use of a Reactive Flex-Joint (RFJ) and the Well Access Management System (WAMS) has demonstrated significantly reduced fatigue exposure through a reduction in loads, reporting of real-time status and rig positioning advice. The RFJ is a mechanism mounted on a standard flex joint for easy installation on drilling rigs. It uses a nitrogen gas spring to reverse the flex joint bending moment. The generated opposing moment increases with an increasing angle of the lower flex joint. This significantly reduces the cyclic bending moments in the lower part of the Blow Out Preventer (BOP) and wellhead (WH) system. WAMS is an advanced monitoring system that may be operated as a fully integrated part of the RFJ design. Sensors provide real-time data for flex joint angle, BOP inclination, wellhead- and riser bending moments. The data is used to assess incurring fatigue damage in real-time and for reporting fatigue status after operations. Two RFJ systems have been in continuous use on two separate rigs during 2020. The RFJ system and WAMS are field-proven and have demonstrated their efficiency in challenging operations in the Barents Sea and the North Sea. The RFJ has been well received in the market due to one-time installation, safe use, significant reduction in wellhead loads, and low operating expenses (OPEX). Data obtained from the operations have been carefully analyzed and show that the RFJ reduces cyclic loads from 50 to 80% resulting in 30 to as much as 1000 times extended fatigue life of the wellhead. The RFJ efficiency depends on the settings of the system and operational conditions.

A Low-Cost 3D Reconstruction and Monitoring System using Digital Fringe Projection

2020 ◽  
Author(s):  
Furqan Ullah ◽  
Sajjad Miran ◽  
Furqan Ahmad ◽  
Irfan Ullah
Keyword(s):  
3D Reconstruction ◽  
Monitoring System ◽  
Large Scale ◽  
Optical Measurement ◽  
Low Cost ◽  
Obstacle Detection ◽  
Measuring System ◽  
Fringe Projection ◽  
Digital Fringe Projection ◽  
3D Measurement System

In this paper the design and construction of a low-cost 3D reconstruction and monitoring system using digital fringe projection (DFP) is proposed, which can perform small and large-scale measurements in different environments and can be applied to various applications such as intelligent monitoring, 3D online inspection, obstacle detection for vehicle guidance, etc. The contribution of this paper is threefold: a) development of a comprehensive 3D measuring system that performs sensors handling, coordinate acquisition, reconstruction, and display process simultaneously and quickly; b) proposal of new filters to improve quality and efficiency of the system; and c) development of a real-time virtual 3D measurement system to calibrate and analyze the proposed methodologies. Optical and simulation measurement results are presented to verify the feasibility and performance of the developed systems. The observed RMS difference was found to be less than 0.021 mm in the optical measurement. From measured results, it can be concluded that the proposed systems and adopted methodology are effective in obtaining 3D surface profiles.

scholarly journals Monitoring of Landslides in Mountainous Regions based on FEM Modelling and Rain Gauge Measurements

2016 ◽  
Vol 6 (5) ◽  
pp. 2106 ◽  
Author(s):  
Quoc-Anh Gian ◽  
Dinh-Chinh Nguyen ◽  
Duc-Nghia Tran ◽  
Duc-Tan Tran
Keyword(s):  
Climate Change ◽  
Urban Areas ◽  
Detection System ◽  
Low Cost ◽  
Finite Element Method Simulation ◽  
Rain Gauge ◽  
Landslide Monitoring ◽  
Mountainous Regions ◽  
The North ◽  
Weather Events

<p><span>Vietnam is a country heavily influenced by climate change. The effect of climate change leads to a series of dangerous phenomena, such as landslides. Landslides occur not only in the mountainous province, but also in Delta provinces, where hundreds of landslides are reported annually in the North-Western provinces of Vietnam. These events have catastrophic impact to the community as well as the economy. In mountainous areas, the conditions for landslides to occur are met frequently, especially after heavy rains or geological activity, causing harm to the community as well as damaging or destroying much needed infrastructure and key transport routes. However, in Vietnam, investment in mountainous regions has been often lower than in urban areas. The meteorology monitoring and forecasting systems are ill equipped and overloaded, so they cannot deliver earlier and more accurate forecasts for complex weather events, unable to provide timely warnings. It can be seen that in countries that landslide often occur, researchers have been trying to develop low cost and efficient landslide detection system. This paper precisely addressed the problems mentioned, by designing and implementing an efficient and reliable Landslide Monitoring and Early Warning (LMnE) system based on the 3G/2G mobile communication system, and a rain gauge at the field site along with a carefully FEM (finite element method) simulation using the rain density information on the server. The system uses advanced processing algorithms combining obtained data at the central station.</span></p>

Monitoring of Landslides in Mountainous Regions based on FEM Modelling and Rain Gauge Measurements

2016 ◽  
Vol 6 (5) ◽  
pp. 2106
Author(s):  
Quoc-Anh Gian ◽  
Dinh-Chinh Nguyen ◽  
Duc-Nghia Tran ◽  
Duc-Tan Tran
Keyword(s):  
Climate Change ◽  
Urban Areas ◽  
Detection System ◽  
Low Cost ◽  
Finite Element Method Simulation ◽  
Rain Gauge ◽  
Landslide Monitoring ◽  
Mountainous Regions ◽  
The North ◽  
Weather Events

<p><span>Vietnam is a country heavily influenced by climate change. The effect of climate change leads to a series of dangerous phenomena, such as landslides. Landslides occur not only in the mountainous province, but also in Delta provinces, where hundreds of landslides are reported annually in the North-Western provinces of Vietnam. These events have catastrophic impact to the community as well as the economy. In mountainous areas, the conditions for landslides to occur are met frequently, especially after heavy rains or geological activity, causing harm to the community as well as damaging or destroying much needed infrastructure and key transport routes. However, in Vietnam, investment in mountainous regions has been often lower than in urban areas. The meteorology monitoring and forecasting systems are ill equipped and overloaded, so they cannot deliver earlier and more accurate forecasts for complex weather events, unable to provide timely warnings. It can be seen that in countries that landslide often occur, researchers have been trying to develop low cost and efficient landslide detection system. This paper precisely addressed the problems mentioned, by designing and implementing an efficient and reliable Landslide Monitoring and Early Warning (LMnE) system based on the 3G/2G mobile communication system, and a rain gauge at the field site along with a carefully FEM (finite element method) simulation using the rain density information on the server. The system uses advanced processing algorithms combining obtained data at the central station.</span></p>

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