APPARATUS FOR ACQUIRING 3-DIMENSIONAL GEOMATICAL INFORMATION OF UNDERGROUND PIPES AND NONCONTACT ODOMETER USING OPTICAL FLOW SENSOR AND USING THE SAME
First Claim
1. An apparatus for acquiring three-dimensional geographical information on an underground pipe, the apparatus comprising:
- an in-pipe transferring device to move in an underground pipe;
a detection means to detect three-dimensional geographical information on the in-pipe transferring device; and
an information storage means to store values measured by the detection means.
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Accused Products
Abstract
An apparatus to acquire 3-dimensional geographical information of an underground pipe includes an in-pipe transfer unit which moves along the inside of the underground pipe, a sensing unit which senses 3-dimensional location information of the in-pipe transfer unit, and an information storage unit which stores a value measured by the sensing unit. Accordingly, the depth at which the underground pipe is located as well as 2-dimensional location information of the underground pipe is stored in the information storage unit so that maintenance and repair of the underground pipe can be carried out with greater efficiency.
81 Citations
14 Claims
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1. An apparatus for acquiring three-dimensional geographical information on an underground pipe, the apparatus comprising:
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an in-pipe transferring device to move in an underground pipe; a detection means to detect three-dimensional geographical information on the in-pipe transferring device; and an information storage means to store values measured by the detection means. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 13, 14)
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11. A non-contact odometer, comprising:
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a laser unit to emit a parallel laser beam having predetermined illumination areas; a sensor unit disposed to be perpendicular to an optical axis of the laser beam emitted by the laser unit; and a beam splitter disposed on optical axes of the laser unit and the sensor unit, to reflect the laser beam emitted by the laser unit on a ground, and to penetrate the laser beam reflected by the ground to the sensor unit.
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Specification