AMTS Monitoring - GEO-InstrumentsAMTS Monitoring Precise optical monitoring requires total stations,...
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www.geo-instruments.com 800-477-2506 [email protected] Rhode Island • New York • District of Columbia • Georgia • Florida • Illinois • Texas • Nevada • California • Washington AMTS Monitoring Systems Optical Monitoring Optical monitoring involves prisms, measurements with a total station, and processing. Prisms are fixed to critical points on the structure, and the total station is used to record angles and distances to each prism. The measurements are offloaded to software that applies statistically- weighted adjustments and outputs coordinates for each prism. Successive measurements are obtained at regular intervals and processed the same way. Changes in coordinates indicate that movement has occurred. The magnitude and direction of the movement is found by comparing current and initial coordinates. AMTS systems automate these steps and deliver alerts, plots and reports via a project website. AMTS System Components AMTS systems are designed for continuous, unattended monitoring. Components of the system include: Prisms: Prisms are installed at monitoring points and control points. AMTS: The AMTS is a high-precision robotic total station managed by a controller. Multiple AMTS are deployed at some sites. Controller: The controller schedules, directs, and records AMTS measurements and then transmits the recorded data to the internet. GeoCloud Server: The server performs quality checks, processes the measurements with MonStar least-squares software, and formats data for a website database. GeoCloud Web Site: The website provides alarms, site views, graphs of the AMTS data along with data from standard geotechnical instrumentation. Deploying AMTS The AMTS requires clear lines-of-sight to monitoring points and control points. GEO has developed specialized mounting brackets and towers for precise positioning of the AMTS. Monitoring points are prisms installed at specified locations on the structure. Measurements of these points reveal settlements and displacements. GEO deploys specialized prisms for different types of structures. Control points are prisms installed at stable locations outside the zone of influence. Measurements of control points establish the exact position of the AMTS. GEO installs redundant control points to enhance accuracy. The AMTS must observe both control prisms and monitoring prisms for each measurement cycle. GEO programs the AMTS to record three pairs of observations for each prism to ensure that a complete and accurate set of measurements is obtained for each cycle. Advantages of AMTS Automated: Automatation provides continuous monitoring and rapid processing of measurements, allowing early identification of any unwanted displacements. Accurate: Multiple observations from a fixed location and least-squares processing delivers accuracies similar to first-order surveys. Cost-effective: AMTS systems provide wide- area coverage at a low-cost per monitored point. Unattended operation and automated processing also lower costs and save time. Compatible: GEO’s MonStar software can output data as specified by the customer, suitable to combine with other geotechnical instrumentation or for use with CAD-generated plan views and as-builts. AMTS at a project site in Boston
Transcript of AMTS Monitoring - GEO-InstrumentsAMTS Monitoring Precise optical monitoring requires total stations,...
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www.geo-instruments.com 800-477-2506 [email protected]
Rhode Island • New York • District of Columbia • Georgia • Florida • Illinois • Texas • Nevada • California • Washington
AMTS Monitoring SystemsOptical MonitoringOptical monitoring involves prisms, measurements with a total station, and processing.
Prisms are fixed to critical points on the structure, and the total station is used to record angles and distances to each prism. The measurements are offloaded to software that applies statistically-weighted adjustments and outputs coordinates for each prism.
Successive measurements are obtained at regular intervals and processed the same way. Changes in coordinates indicate that movement has occurred. The magnitude and direction of the movement is found by comparing current and initial coordinates.
AMTS systems automate these steps and deliver alerts, plots and reports via a project website.
AMTS System ComponentsAMTS systems are designed for continuous, unattended monitoring. Components of the system include:
Prisms: Prisms are installed at monitoring points and control points.
AMTS: The AMTS is a high-precision robotic total station managed by a controller. Multiple AMTS are deployed at some sites.
Controller: The controller schedules, directs, and records AMTS measurements and then transmits the recorded data to the internet.
GeoCloud Server: The server performs quality checks, processes the measurements with MonStar least-squares software, and formats data for a website database.
GeoCloud Web Site: The website provides alarms, site views, graphs of the AMTS data along with data from standard geotechnical instrumentation.
Deploying AMTSThe AMTS requires clear lines-of-sight to monitoring points and control points. GEO has developed specialized mounting brackets and towers for precise positioning of the AMTS.
Monitoring points are prisms installed at specified locations on the structure. Measurements of these points reveal settlements and displacements. GEO deploys specialized prisms for different types of structures.
Control points are prisms installed at stable locations outside the zone of influence. Measurements of control points establish the exact position of the AMTS. GEO installs redundant control points to enhance accuracy.
The AMTS must observe both control prisms and monitoring prisms for each measurement cycle. GEO programs the AMTS to record three pairs of observations for each prism to ensure that a complete and accurate set of measurements is obtained for each cycle.
Advantages of AMTSAutomated: Automatation provides continuous monitoring and rapid processing of measurements, allowing early identification of any unwanted displacements.
Accurate: Multiple observations from a fixed location and least-squares processing delivers accuracies similar to first-order surveys.
Cost-effective: AMTS systems provide wide-area coverage at a low-cost per monitored point. Unattended operation and automated processing also lower costs and save time.
Compatible: GEO’s MonStar software can output data as specified by the customer, suitable to combine with other geotechnical instrumentation or for use with CAD-generated plan views and as-builts.
AMTS at a project site in Boston
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GEO-Instruments — Experts in Automated Monitoring
www.geo-instruments.com 800-477-2506 [email protected]
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Cell modem to internet
GeoCloud server runs least-squares adjustments and quality checks, then posts results on website
Alerts, Graphs, Reports
AMTS measures monitoring points and control points at every observation cycle.
AMTS Monitoring System GeoCloud Website
Monitoring Points
Control
ControlControl
AMTS Data FlowMonitoring points are installed at locations affected by construction activity.
Control Points are installed at stable locations outside the zone of influence.
AMTS measures both monitoring points and control points at every observation cycle and then transmits data to GeoCloud servers on the internet.
GeoCloud servers run least-squares adjustments and quality checks, then forward the processed data to the project database for alarm checks, data visualization, and storage.
Project Website makes planviews, trend plots, and reports available to authorized users via their web browsers.
HD Road PrismRoad prisms are installed on road surfaces to monitor for settlement or heave.
L-Bar Mini PrismVersatile L-Bar mini-prisms are the standard for most applications.
Rail Clip PrismRail clip prisms are used for monitoring settlement and lateral displacement of tracks.
TowersGravity-base towers provide a stable location for AMTS when walls, columns, and roof tops are not available. Towers are semi-portable and can be relocated as necessary.
Parapet BracketsParapet brackets are secured by clamps, minimizing impact at the mounting location. Solar power is available for most AMTS systems, eliminating the need for AC wiring.
Wall BracketsWall brackets can be installed on any wall or column. The photo above shows a corner bracket anchored to a bridge pier.
