Apparatus for measuring slope change amount of structure and method for measuring slope change amount of structure using same

Patent metadata

Field	Value
Publication number	US-11802765-B2
Application number	US-201916979791-A
Country	US
Kind code	B2
Filing date	Nov 29, 2019
Priority date	Dec 21, 2018
Publication date	Oct 31, 2023
Grant date	Oct 31, 2023

Abstract

Provided is an apparatus for measuring a slope change amount of a structure, the apparatus being characterized by including: a bottom body ( 100 ) formed in a spherical surface having a predetermined radius of curvature; a ball ( 200 ) installed on an upper surface of the bottom body ( 100 ) and moving due to a gravitational force; and a camera ( 300 ) for imaging the bottom body ( 100 ) on which the ball ( 200 ) is located. In accordance with the present invention, there is an effect in that a slope change amount of a structure for a certain period may accurately be measured.

First claim

What is claimed is:

1. An apparatus for measuring a slope change amount of a structure, the apparatus comprising:
a bottom body ( 100 ) formed in a spherical surface having a predetermined radius of curvature;
a ball ( 200 ) installed on an upper surface of the bottom body ( 100 ) and moving due to a gravitational force; and
a camera ( 300 ) for imaging the bottom body ( 100 ) on which the ball ( 200 ) is located, the apparatus further including:
a housing ( 500 ) in which an internal space ( 510 ) is formed that accommodates the bottom body ( 100 ), the ball ( 200 ), and the camera ( 300 ); and
a ball storing unit ( 520 ) for limiting a behavior of the ball ( 200 ) in the internal space ( 510 ), wherein:
the bottom body ( 100 ) is located on a bottom surface of the internal space ( 510 );
the camera ( 300 ) is located on an upper surface of the internal space ( 510 ); and
the ball storing unit ( 520 ) is a storage barrel ( 522 ) that shields the ball ( 200 ) from the camera ( 300 ), the bottom surface and the upper surface,
wherein:
the storage barrel ( 522 ) is configured to immobilize the ball ( 200 ) during transport or storage of the apparatus, and
the storage barrel ( 522 ) is configured to release the ball ( 200 ) to freefall to the bottom surface during operation of the apparatus.

2. The apparatus of claim 1 , further comprising a transceiving unit ( 400 ) for transmitting image information (a) generated by the camera ( 300 ) to a server ( 10 ).

3. The apparatus of claim 1 , further comprising a lighting apparatus ( 600 ) for providing light to the internal space ( 510 ).

4. The apparatus of claim 3 , further comprising a control unit ( 700 ) configured to control the camera ( 300 ), the transceiving unit ( 400 ) and the lighting apparatus ( 600 ).

5. A method for measuring a slope change amount of a structure using the apparatus of claim 4 for measuring a slope change amount of a structure, the method comprising:
a first step (S 100 ) for imaging, by means of the camera ( 300 ), the bottom body ( 100 ) on which the ball ( 200 ) is located and generating first image information (a 1 ) about the ball ( 200 ); and
a second step (S 200 ) for imaging, by means of the camera ( 300 ), the bottom body ( 100 ) on which the ball ( 200 ) is located and generating second image information (a 2 ) about the ball ( 200 ).

6. The method of claim 5 , further comprising a third step (S 300 ) in which the control unit ( 700 ) uses the first image information (a 1 ) and the second image information (a 2 ) to derive a value of change in the slope.

7. The method of claim 6 , wherein the third step (S 300 ) comprises:
a position value deriving step (S 310 ) for deriving a first position value (b 1 ) of the ball ( 200 ) from the first image information (a 1 ) and deriving a second position value (b 2 ) of the ball ( 200 ) from the second image information (a 2 ); and
a change value deriving step (S 320 ) for using the first position value (b 1 ), the second position value (b 2 ), and the radius of curvature to derive the value of change in the slope.

8. A computer readable recording medium configured to store a program for executing the method of claim 7 for measuring a slope change amount of a structure.

Assignees

• Korea Inst Civil Eng & Building Tech
• Uninetec Corp

Inventors

• Kwak Ki Seok
• Park Jae Hyun
• Chung Moon Kyung
• Seo Seung Hwan
• Ko Young Hun
• Kwak Bongkun

Classifications

• G01C9/10 Primary

  by using rolling bodies {, e.g. spheres, cylinders, mercury droplets} · CPC title

• G01C9/02

  Details · CPC title

• G01C25/005

  initial alignment, calibration or starting-up of inertial devices · CPC title

• G01C2009/107

  spheres · CPC title

• G01C9/06 Primary

  Electric or photoelectric indication or reading means · CPC title