Tunnel convergence detection apparatus and method
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United States of America Patent
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Apr 17, 2018
Issued Date -
N/A
app pub date -
Mar 28, 2017
filing date -
Mar 29, 2016
priority date (Note) -
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status (Latency Note)
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Abstract
Provided are methods and products for rapid, reliable, and accurate monitoring and detecting of convergence in mining and civil engineering applications. A sensor, such as a scanning laser device, is moved through a tunnel, either automatically, autonomously, or with manual guidance. The sensor is configured to acquire 3D point clouds of all or a portion of a tunnel, at selected times. The 3D point cloud data is used to compute a set of indicators, which are local descriptors of the environment along the tunnel. The indicators are then amalgamated to estimate the probability that convergence has occurred in a given region. In one embodiment, the indicators are fused together using a Bayes network.
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International Classification(s)
- E21D:SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAM....
- G02B:OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
- B60R:VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT ....
- G01C:MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING....
- G01S:RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMI....
- G01B:MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIME....
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