WO2002057708A2 - Appareil permettant de mesurer le contour d'une surface - Google Patents

Appareil permettant de mesurer le contour d'une surface Download PDF

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Publication number
WO2002057708A2
WO2002057708A2 PCT/CA2002/000044 CA0200044W WO02057708A2 WO 2002057708 A2 WO2002057708 A2 WO 2002057708A2 CA 0200044 W CA0200044 W CA 0200044W WO 02057708 A2 WO02057708 A2 WO 02057708A2
Authority
WO
WIPO (PCT)
Prior art keywords
laser
laser projection
axis
cord
projection axis
Prior art date
Application number
PCT/CA2002/000044
Other languages
English (en)
Other versions
WO2002057708A3 (fr
Inventor
Alfred N. Zeuner
Paul P. Varona
Original Assignee
Axyz International Inc.
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 Axyz International Inc. filed Critical Axyz International Inc.
Priority to AU2002226217A priority Critical patent/AU2002226217A1/en
Publication of WO2002057708A2 publication Critical patent/WO2002057708A2/fr
Publication of WO2002057708A3 publication Critical patent/WO2002057708A3/fr

Links

Classifications

    • 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
    • G01B5/004—Measuring arrangements characterised by the use of mechanical techniques for measuring coordinates of points
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
    • G01C15/00—Surveying instruments or accessories not provided for in groups G01C1/00 - G01C13/00

Definitions

  • TITLE APPARATUS FOR MEASURING THE CONTOUR OF A SURFACE
  • the present invention relates to apparatus for measuring the contour of a surface, such as a wall, and more specifically to apparatus for measuring the contour of such wall for permitting the accurate fitting of a counter top thereto.
  • a long straightedge such as a straight piece of wood
  • a straight piece of wood is placed along the length of the wall.
  • any gaps between the straight edge and the wall are manually measured and recorded.
  • Apparatus that is used to measure the length of a wall.
  • a real estate electrotape 10 measures the length of an interior or exterior wall 17 or other similar structure using optical means.
  • a sonic tape 16 is used to measure the perpendicular distance from the device to the interior or exterior wall 17.
  • Two steerable lasers 14 are then used to determine the angles between the perpendicular axis and the beams aimed at the wall corners.
  • An algorithm is applied to the angular and perpendicular distance data to obtain the length of the wall.
  • a microprocessor performs the calculations, the results of which are displayed on an electro optical display.
  • an apparatus for measuring the contour of a surface comprises a fixed base, and a laser for projecting a laser beam along a laser projection axis, the laser being operatively pivotally mounted on the fixed base for pivotal movement about a main axis oriented perpendicularly to the laser projection axis between a plurality of selected angular orientations of the laser projection axis, so as to project the laser beam onto the surface at points corresponding to each of the selected angular orientations of the laser projection axis.
  • a cord means is operatively mounted at a secured end on the apparatus and extends through a departure point concurrent with the main axis to terminate at a free end. There is also means to determine a projected length of cord extending between the departure point and the free end, which free end is placed at the points on the surface, and means to calculate the XY co-ordinates of each point on the surface, from each determined length of cord and the corresponding selected angular orientations of the laser projection axis.
  • a method of measuring the contour of a surface comprises the steps of:
  • Figure 1 is an overall pictorial view showing a preferred embodiment of the apparatus for measuring the contour of a surface according to the present invention, with the top cover shown in cross-section;
  • Figure 2 is an enlarged side elevational view of the measurement producing unit of the apparatus of Figure 1, with the top cover shown partially in cross-section;
  • Figure 3 is an enlarged perspective view of an upper portion of the measurement producing unit of Figure 2 , with the top cover removed for the sake of clarity;
  • Figure 4 is a view of the top portion of the measurement producing unit apparatus of Figure 2, with the top cover shown partially in cross-section;
  • Figure 5 is a side elevational view of the measurement producing unit of the apparatus of Figure 1, in use, with the top cover shown in cross-section;
  • Figure 6 is a perspective view of the measurement producing unit of the apparatus of Figure 1, in use;
  • Figure 7 is a perspective view of the measurement producing unit of the apparatus of Figure 1, in use by an operator pointing to a first point, with the top cover removed for the sake of clarity;
  • Figure 8 is a side elevational view of the measurement producing unit of the apparatus of Figure 1, in use, with the operator not shown for the sake of clarity;
  • Figure 9 is an enlarged side elevational view of a portion of Figure 8;
  • Figure 10 is a perspective view similar to Figure 7, with the operator causing the turret to rotate so as to pivotally move the laser about a main axis;
  • Figure 11 is a perspective view similar to Figure 7, with the operator pointing to a new point;
  • Figure 12 is a top plan view of the measurement producing unit of the apparatus of Figure 1, in use.
  • FIGS. 1 through 12 illustrate a preferred embodiment of the apparatus for measuring the contour of a surface, which would typically be a wall 22, or the like, according to the present invention, as indicated by the general reference numeral 20.
  • the surface being measured is a vertically disposed surface only about two inches high, which surface represents a vertically narrow band on the wall 22, corresponding to the area of contact of an edge of a desktop 23 with the wall 22, when the desktop 23 is installed.
  • measurements are assumed to be taken along a substantially horizontal line, but do not need to be.
  • the third dimension component (height) is assumed to be essentially a constant.
  • the apparatus comprises a fixed base, as indicated by the general reference numeral 30, and a laser 40 for projecting a laser beam along a laser projection axis "L".
  • the laser 40 is operatively pivotally mounted on the fixed base 30 for pivotal movement about a main axis "M” oriented perpendicularly to the laser projection axis "L” between a plurality of selected angular orientations of the laser projection axis "L", so as to project the laser beam onto a wall 22 at points corresponding to each of the selected angular orientations of the laser projection axis "L".
  • a cord means 60 is operatively mounted at a secured end 61 on the apparatus and extends through a departure point concurrent with the main axis "M" to terminate at a free end 62.
  • the fixed base 30 comprises an upper plate member 32, and intermediate plate member 34, and a lower plate member 36.
  • the lower plate member 36 is securely mounted on a tripod, as indicated in the general reference numeral 31 by means of suitable threaded fasteners (not shown) .
  • the upper plate member 32 and the intermediate plate member 34 are maintained in spaced relation one from the other by means of vertically disposed spacer members 38
  • a generally cylindrical cover 29 is secured in removable relation to the perimeter of both the upper plate member 32 and the intermediate plate member 34.
  • the intermediate plate member 34 is mounted in height adjustable relation on the lower plate member 36 by means of three "stand-offs", as indicated by general reference numeral 39, with each stand-off 39 comprising a threaded leg 37 supported in threaded engagement within a co ⁇ operating threaded collar 33 rotatably mounted on a respective base member 35 and in threaded engagement with a corresponding threaded leg 37. Rotating the threaded collars 33 permits for height adjustment and also permits for inclination of the upper portion of the fixed base 30.
  • the laser 40 for projecting a laser beam along a laser projection axis "L” can be best seen in Figure 3, typically, the laser projection axis "L” is substantially horizontally oriented, but need not be so.
  • the laser 40 is operatively pivotably mounted on the fixed base 30 by means of a turret member, as indicated by general reference numeral 41, pivotably mounted on the fixed base 30, as will be discussed in greater detail subsequently.
  • the turret member 41 comprises an upper plate member 42 and a lower plate member 43, which upper 42 and lower 43 plate members are maintained in spaced relation one from the other by means of vertically oriented spacer members 44 secured by threaded fasteners (not shown) .
  • a hemi-spherical top cover 45 is secured in removable relation to the upper plate member 42.
  • the turret member 41 raises and lowers, and also inclines in conjunction with the fixed base 30. Accordingly, the laser projection axis "L” may also be oriented horizontally, or may be oriented at a skewed angle, as desired.
  • a levelling means comprising spirit levels, or the like, operably mounted on the turret member 41 to aid in aligning the laser projection axis "L" horizontally.
  • a first spirit level 46a and a second spirit level 46b are disposed in mutually perpendicular relation one to the other on the upper plate member 32, adjacent the outer periphery thereof so as to be readily viewable.
  • the laser 40 is operatively pivotably mounted, as aforesaid, for pivotal movement about a main axis "M" oriented perpendicularly to the laser projection axis "L", which main axis "M” is therefore typically substantially vertically oriented.
  • the laser 40 is mounted for pivotal movement between a plurality of selected angular orientations of the laser projection axis "L”, so as to project the laser beam sequentially onto a wall 22 at points corresponding to each of the selected angular orientations of the laser projection axis "L” .
  • there is means to move the laser 40 between the plurality of selected angular orientations which means comprises an electrically powered stepper motor 48 mounted on the lower plate member 36 and so as to extend through an opening in the intermediate plate member 34.
  • the drive shaft 48a of the stepper motor 48 extends upwardly through the upper plate member 42 and is securely fastened in non-rotatable relation to the lower plate member 43 of the turret member 41 by suitable threaded fasteners (not shown) .
  • the stepper motor 48 is connected in data transfer relation via wires 51 to control circuitry on a control circuit board 28, which control circuitry is operated by an infra-red (IR) remote control 100 (see Figures 1, 7, 10 and 11) transmitting to an infra-red (IR) receiver 25 that is operatively connected to a receiving circuit on the circuit board 28.
  • IR infra-red
  • the circuit board 28 is preferably mounted within a portable carrying case 27.
  • the means 50 to determine the angular orientation comprises a microprocessor 80 processing a computer program, which program causes the stepper motor 48 to rotate its drive shaft 48a by a known angular amount for each incremental advancement (in either rotational direction) of the drive shaft 48a. Since the number of incremental advancements of the drive shaft 48a in either rotational direction is known, and the angular displacement of each incremental advancement is known, the rotational angle of the drive shaft 48a can always be calculated.
  • a second digital encoder operatively mounted between the turret 41 and the fixed base 30 would be used as the means to determine the angle of orientation of the laser projection axis "L".
  • the second digital encoder 50 would be connected in data transfer relation to a means to calculate corresponding XY coordinates of the points on the wall 22, namely the microprocessor 80.
  • the means 80 to calculate corresponding XY coordinates comprises the microprocessor 80 mounted on the control circuit board 28 along with control circuitry for controlling the stepper motor 48.
  • the microprocessor 80 is connected in data transfer relation via a cables 82 to a microcomputer 81.
  • the microcomputer 81 can be used to record the XY coordinates and to produce a graphical output representing the shape of the wall 22 being measured, among other functions .
  • the cord means 60 preferably comprises a stranded metal cord and is operatively mounted at a secured end on the apparatus, and is wound onto an automatically retracting reel member 63 that is mounted on the turret member 41.
  • the cord means 60 exits the reel member 63 so as to extend through a departure point concurrent with the main axis "M" and terminates at a free end 62.
  • Mounted at the free end 62 is a pointer member 64 operatively retained by a handle member 65 having an electrical momentary contact pushbutton 66 operatively mounted thereon.
  • an infra-red transmitter circuit (not specifically shown) is mounted within the handle member 65. Operating the pushbutton 66 triggers the infra-red circuit and causes it to transmit to the infra-red (IR) receiver 25 that is operatively connected to the co-operating receiving circuit on the circuit board 28.
  • the pointer 64 comprises a base portion 67 and a narrow pointer portion 68 having a tapered end portion 69.
  • the tapered end portion 69 is used to accurately contact the laser beam point on the wall 22 at any given point of the laser beam and therefore defines the free end 62 of the cord 60. In use, the tapered end portion 69 of the pointer 64 is placed at the various points on the wall 22 as defined by the laser beam.
  • the means to determine a projected length of the cord 60 comprises a first digital encoder 70 connected to the central spindle (not shown) of the automatically retracting reel member 63, with the first digital encoder 70 and the automatically retracting reel member 63 essentially being integral one with the other. In this manner, the first digital encoder 70 is rotated in a first rotational direction when the cord 60 is extended from the automatically retracting reel member 63, and is rotated in a second rotational direction when the cord 60 is retracted onto the automatically retracting reel member 63.
  • the first digital encoder 70 is also connected in data transfer relation via wires 71 to the means to calculate the corresponding XY coordinates, namely the microprocessor 80. Within the top cover 45, the wires 71 are protected by a sheath 77. The first digital encoder 70 transmits a reference voltage and pulses to the microprocessor 80, which pulses correspond to the extraction of the cord 60 from the reel member 63 and retraction of the cord 60 onto the reel member 63.
  • the means to calculate the corresponding XY coordinates of each point on the wall 22, from each of the determined length of cord 60 and the corresponding selected angular orientation of the laser projection axis "L", preferably also comprises the microprocessor 80.
  • control circuit board 28 is shown separately from the measurement producing unit 90, it is also possible, and perhaps preferable, to mount the control circuit board 28 on the measurement producing unit 90, typically on the turret member 41 or on the fixed base 30.
  • FIGS 6 through 12 show the apparatus 20 of the present invention in use measuring the contour of a surface, shown as a wall 22.
  • the turret member 41 has the laser 40 mounted thereon for pivotal movement about a main axis "M” passing through and oriented perpendicularly to the laser projection axis "L".
  • the turret 41 has been rotated so as to orient the laser to a desired orientation, so as to thereby establish a reference axis co-linear with the laser projection axis "L", thus establishing a reference axis angular orientation.
  • a laser beam is projected from the laser to a point on the wall 22 at a point corresponding to a selected angular orientation of the laser projection axis "L", in this case the reference angle.
  • the handle member 65 of the pointer member 64 is then grasped by the operator, as can be seen in Figure 7, and the handle member 65 is pulled so as to extract the cord 60 from the reel member 63.
  • the tapered end portion 69 of the pointer 64 forms the free end 62 of the cord 60 , and is touched to the point in the wall 22, as can be best seen in Figures 8 and 9, as defined by the laser beam.
  • the length of cord 60 extracted from the reel member 63 is determined by the microprocessor 80 corresponding to the number of pulses transmitted to the microprocessor 80 by the first digital encoder 70, which is rotated by the reel member 63. In this manner, the distance from the main axis "M" to the point of the laser beam on the wall 22 is determined.
  • next point on the wall 22 is chosen by pivotally moving the laser 40 about its main axis "M", as indicated by arrow "A", via operation of a remote control 100, to a next angular orientation, as is shown in Figure 11, whereat the free end 62 of the pointer 64 is again touched to that next point on the wall 22.
  • the length of cord 60 extracted from the reel member 63 is determined by the microprocessor 80 corresponding to the number of pulses transmitted to the microprocessor 80 by the first digital encoder 70, which is rotated by the reel member 63. In this manner, the second measured distance from the main axis "M" to the point of the laser beam on the wall 22 is determined.
  • the above method is repeated for all necessary points and also for points along the wall 22 about every few inches, as can be best seen in Figure 12.
  • the XY coordinates of each point on the wall 22, as defined by the laser beam and then measured by the cord 60, is calculated by the microprocessor 80.
  • an algorithm including trigonometric equations may be used, or a look- up table may be used, or any other suitable algorithm may be used.
  • the microcomputer 81 can take the measurements from the microprocessor 80 and store this information, can represent it graphically, can print it out on a printer, and so on.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Length Measuring Devices By Optical Means (AREA)
  • Length Measuring Devices With Unspecified Measuring Means (AREA)

Abstract

L'invention concerne un appareil permettant de mesurer le contour d'une surface, telle qu'une paroi. Cet appareil comprend une base fixe et un laser permettant de projeter un faisceau laser le long d'un axe de projection laser. Le faisceau laser est monté pivotant sur la base fixe de manière à pivoter autour d'un axe principal orienté perpendiculairement à l'axe de projection laser entre une pluralité d'orientations angulaires choisies de l'axe de projection laser, de manière à projeter le faisceau laser sur des points de la surface correspondant à chaque orientation angulaire choisie de l'axe de projection laser. Un moteur pas-à-pas et un algorithme informatique déterminent l'angle d'orientation de l'axe de projection laser à chaque orientation angulaire choisie par rapport à une orientation de référence tandis qu'un dispositif de cordon est monté fonctionnel sur une extrémité sécurisée de l'appareil et traverse un point de départ parallèle à l'axe principal pour terminer sur une extrémité libre. Un codeur numérique détermine une longueur projetée de cordon s'étendant entre le point de départ et l'extrémité libre, laquelle extrémité libre est placée sur les points de la surface. Un microprocesseur calcule les coordonnées XY de chaque point de la surface à partir de chaque longueur déterminée de cordon et des orientations angulaires choisies correspondantes de l'axe de projection laser. L'invention concerne également un procédé permettant de mesurer le contour de la surface.
PCT/CA2002/000044 2001-01-16 2002-01-14 Appareil permettant de mesurer le contour d'une surface WO2002057708A2 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU2002226217A AU2002226217A1 (en) 2001-01-16 2002-01-14 Apparatus for measuring the contour of a surface

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US26287201P 2001-01-16 2001-01-16
US60/262,872 2001-01-16

Publications (2)

Publication Number Publication Date
WO2002057708A2 true WO2002057708A2 (fr) 2002-07-25
WO2002057708A3 WO2002057708A3 (fr) 2002-10-24

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL1037693A (nl) * 2009-02-05 2010-08-09 Holding Prodim Systems B V Inrichting en werkwijze voor het uitzetten van contouren, punten of werken en een aanwijsinrichting voor gebruik hierbij.
EP2636987A1 (fr) * 2012-03-08 2013-09-11 Holding Prodim Systems B.V. Appareil de pointage de coordonnées spatiales, comprenant une sonde à main mobile et une unité de base portable et procédé apparenté
WO2022220695A1 (fr) * 2021-04-16 2022-10-20 Ec8 Consulting Limited Systèmes, procédés et dispositifs pour traitement et manipulation de cloisons sèches

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4459758A (en) * 1981-04-07 1984-07-17 Sarl: Infomain Topographical surveying instrument
DE3833203C1 (en) * 1988-09-30 1990-02-22 Bernhard 8400 Regensburg De Blasch Device for the numeric acquisition of coordinates for CAD systems
DE4317932A1 (de) * 1993-05-31 1994-12-01 Balck Heidrun Verfahren zur Bestimmung oder zur Wiedergabe von Koordinaten von Objekten im Raum oder in der Fläche

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4459758A (en) * 1981-04-07 1984-07-17 Sarl: Infomain Topographical surveying instrument
DE3833203C1 (en) * 1988-09-30 1990-02-22 Bernhard 8400 Regensburg De Blasch Device for the numeric acquisition of coordinates for CAD systems
DE4317932A1 (de) * 1993-05-31 1994-12-01 Balck Heidrun Verfahren zur Bestimmung oder zur Wiedergabe von Koordinaten von Objekten im Raum oder in der Fläche

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL1037693A (nl) * 2009-02-05 2010-08-09 Holding Prodim Systems B V Inrichting en werkwijze voor het uitzetten van contouren, punten of werken en een aanwijsinrichting voor gebruik hierbij.
EP2636987A1 (fr) * 2012-03-08 2013-09-11 Holding Prodim Systems B.V. Appareil de pointage de coordonnées spatiales, comprenant une sonde à main mobile et une unité de base portable et procédé apparenté
WO2022220695A1 (fr) * 2021-04-16 2022-10-20 Ec8 Consulting Limited Systèmes, procédés et dispositifs pour traitement et manipulation de cloisons sèches

Also Published As

Publication number Publication date
AU2002226217A1 (en) 2002-07-30
WO2002057708A3 (fr) 2002-10-24

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