GB2576519A - 3D Target for translating consecutive distance readings into vertical and horizontal displacement - Google Patents

3D Target for translating consecutive distance readings into vertical and horizontal displacement Download PDF

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Publication number
GB2576519A
GB2576519A GB1813624.2A GB201813624A GB2576519A GB 2576519 A GB2576519 A GB 2576519A GB 201813624 A GB201813624 A GB 201813624A GB 2576519 A GB2576519 A GB 2576519A
Authority
GB
United Kingdom
Prior art keywords
target
vertical
horizontal displacement
laser distance
measurement
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
GB1813624.2A
Other versions
GB201813624D0 (en
Inventor
Owsianka Pawel
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to GB1813624.2A priority Critical patent/GB2576519A/en
Publication of GB201813624D0 publication Critical patent/GB201813624D0/en
Publication of GB2576519A publication Critical patent/GB2576519A/en
Withdrawn legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B11/00—Measuring arrangements characterised by the use of optical techniques
    • G01B11/02—Measuring arrangements characterised by the use of optical techniques for measuring length, width or thickness
    • G01B11/026—Measuring arrangements characterised by the use of optical techniques for measuring length, width or thickness by measuring distance between sensor and object
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B11/00—Measuring arrangements characterised by the use of optical techniques
    • G01B11/16—Measuring arrangements characterised by the use of optical techniques for measuring the deformation in a solid, e.g. optical strain gauge
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B5/00—Measuring arrangements characterised by the use of mechanical techniques
    • G01B5/02—Measuring arrangements characterised by the use of mechanical techniques for measuring length, width or thickness
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S17/00—Systems using the reflection or reradiation of electromagnetic waves other than radio waves, e.g. lidar systems
    • G01S17/02—Systems using the reflection of electromagnetic waves other than radio waves
    • G01S17/06—Systems determining position data of a target
    • G01S17/08—Systems determining position data of a target for measuring distance only
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S17/00—Systems using the reflection or reradiation of electromagnetic waves other than radio waves, e.g. lidar systems
    • G01S17/02—Systems using the reflection of electromagnetic waves other than radio waves
    • G01S17/50—Systems of measurement based on relative movement of target
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S7/00—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
    • G01S7/48—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S17/00
    • G01S7/481—Constructional features, e.g. arrangements of optical elements

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Electromagnetism (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Length Measuring Devices By Optical Means (AREA)
  • Optical Radar Systems And Details Thereof (AREA)

Abstract

A stepped 3D target 3 is provided. The 3D target allows for interpreting specific differences x in consecutive distance measurements by a laser distance meter 1 as vertical or horizontal movement ( for example, 4, 5 in Figures 2 & 3) perpendicular to the line of measurement.

Description

3D target fortranslating consecutive distance readings into vertical and horizontal displacement
This invention relates to a 3D object that would allow interpreting consecutive distance measurements to calculate vertical and horizontal movements of the asset to which the object is attached to.
In construction industry laser distance meters are commonly used. A laser distance meter allows checking the distance between the meter and a surface towards which the laser is directed. Some of those meters are used for monitoring change in distance. Those laser distance meters are usually mounted permanently and report distance measurements in specific time intervals wirelessly. The limitation of those instruments is that they can only report distance change and therefore one dimensional movement. A laser distance meter would be able to only show if the surface was getting closer or further away.
To extend the functionality of laser distance meters this invention proposes replacing a flat surface to which the laser distance meter is pointed with a 3D object that would allow for more interpretation. That is achieved by attaching a 3D target to the surface where the laser distance meter is pointed. The 3D target is designed to have a shape that will cause relatively large changes to the distance measurement if the target, and the surface it is attached to, are moving vertically or horizontally perpendicular to the line of measurement.
The application of the 3D target will allow for more analysis and for wider use of laser distance meters in monitoring.
An example of the invention will now be described by referring to accompanying drawings:
• Figure 1 shows a side view of a monitoring laser distance meter taking measurement to a 3D target proposed.
• Figure 2 shows a side view of a monitoring laser distance meter taking measurement to a 3D target proposed after the target has moved up.
• Figure 3 shows a side view of a monitoring laser distance meter taking measurement to a 3D target proposed after the target has moved down.
• Figure 4 shows an isometric view of the target.
• Figure 5 shows a table with an example of translating distance measurements change to vertical or horizontal movements.
A laser distance meter 1 is taking consecutive readings to the 3D target 3 which is attached to a wall. The target 3 is presented out of scale. While the there is no vertical movement the change in distance will only be caused by the target 3 moving towards or away from the laser distance meter 1. At high frequency of readings the changes between consecutive values will be minimal. Figure 2 shows a case of vertical movement 4. Because the laser 2 is now targeted at a different part of the target 3 the measurement value is now shorter by the value of x from the previous measurement value. That can be interpreted as a vertical movement upwards by a value of y. Figure 3 shows a case of the wall and the target 3 moving down 5. The distance measurement is now longer by a value of x than previous measurement. That can be interpreted as a movement of target 3 upwards by a value of y. Cases above are simplified to be presented in 2 dimensions.
Figure 4 shows an isometric view of a 3d target. The steps are designed to be of different value horizontally and vertically. Figure 5 shows an example table allowing for interpreting sudden changes of distance measurement value to horizontal and vertical displacement. The values are calculated for a target with vertical step of 5mm, horizontal step of 2mm and the surface of each step being a square of 3mm by 3mm.

Claims (1)

1. A 3D target with a specific geometry allowing for interpreting sudden laser distance measurement changes as vertical movement or movement perpendicular to the line of measurement.
GB1813624.2A 2018-08-21 2018-08-21 3D Target for translating consecutive distance readings into vertical and horizontal displacement Withdrawn GB2576519A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1813624.2A GB2576519A (en) 2018-08-21 2018-08-21 3D Target for translating consecutive distance readings into vertical and horizontal displacement

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1813624.2A GB2576519A (en) 2018-08-21 2018-08-21 3D Target for translating consecutive distance readings into vertical and horizontal displacement

Publications (2)

Publication Number Publication Date
GB201813624D0 GB201813624D0 (en) 2018-10-03
GB2576519A true GB2576519A (en) 2020-02-26

Family

ID=63668124

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1813624.2A Withdrawn GB2576519A (en) 2018-08-21 2018-08-21 3D Target for translating consecutive distance readings into vertical and horizontal displacement

Country Status (1)

Country Link
GB (1) GB2576519A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP7050208B1 (en) * 2021-10-06 2022-04-07 東京パワーテクノロジー株式会社 Reflector, ranging device, displacement observation system, ranging method, and program

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008123510A1 (en) * 2007-03-30 2008-10-16 Kyoto University Displacement measuring method, displacement measuring apparatus and target for displacement measurement
EP2113743A1 (en) * 2004-07-30 2009-11-04 Kyoto University Displacement measuring method, displacement measuring instrument, displacement measuring target and structure
KR20150074618A (en) * 2013-12-24 2015-07-02 세종측기 주식회사 System For 3-Dimensional Displacement Measurement of Bridge And Operation Method Of Same
JP2015169475A (en) * 2014-03-05 2015-09-28 大成建設株式会社 displacement measuring device

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2113743A1 (en) * 2004-07-30 2009-11-04 Kyoto University Displacement measuring method, displacement measuring instrument, displacement measuring target and structure
WO2008123510A1 (en) * 2007-03-30 2008-10-16 Kyoto University Displacement measuring method, displacement measuring apparatus and target for displacement measurement
KR20150074618A (en) * 2013-12-24 2015-07-02 세종측기 주식회사 System For 3-Dimensional Displacement Measurement of Bridge And Operation Method Of Same
JP2015169475A (en) * 2014-03-05 2015-09-28 大成建設株式会社 displacement measuring device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP7050208B1 (en) * 2021-10-06 2022-04-07 東京パワーテクノロジー株式会社 Reflector, ranging device, displacement observation system, ranging method, and program

Also Published As

Publication number Publication date
GB201813624D0 (en) 2018-10-03

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WAP Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1)