WO2011078838A1 - Appareil de mesure sans contact - Google Patents

Appareil de mesure sans contact Download PDF

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Publication number
WO2011078838A1
WO2011078838A1 PCT/US2009/006703 US2009006703W WO2011078838A1 WO 2011078838 A1 WO2011078838 A1 WO 2011078838A1 US 2009006703 W US2009006703 W US 2009006703W WO 2011078838 A1 WO2011078838 A1 WO 2011078838A1
Authority
WO
WIPO (PCT)
Prior art keywords
laser
disposed
structured
receiver
target structure
Prior art date
Application number
PCT/US2009/006703
Other languages
English (en)
Inventor
Reginald Earl Booker, Jr.
Original Assignee
Booker Reginald Earl Jr
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 Booker Reginald Earl Jr filed Critical Booker Reginald Earl Jr
Priority to PCT/US2009/006703 priority Critical patent/WO2011078838A1/fr
Publication of WO2011078838A1 publication Critical patent/WO2011078838A1/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
    • G01B11/00—Measuring arrangements characterised by the use of optical techniques
    • G01B11/14—Measuring arrangements characterised by the use of optical techniques for measuring distance or clearance between spaced objects or spaced apertures
    • 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
    • G01B11/26—Measuring arrangements characterised by the use of optical techniques for measuring angles or tapers; for testing the alignment of axes
    • G01B11/27—Measuring arrangements characterised by the use of optical techniques for measuring angles or tapers; for testing the alignment of axes for testing the alignment of axes
    • G01B11/272—Measuring arrangements characterised by the use of optical techniques for measuring angles or tapers; for testing the alignment of axes for testing the alignment of axes using photoelectric detection means
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
    • G01C3/00—Measuring distances in line of sight; Optical rangefinders
    • G01C3/02—Details
    • G01C3/06—Use of electric means to obtain final indication
    • G01C3/08—Use of electric radiation detectors
    • 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
    • G01S17/06—Systems determining position data of a target
    • G01S17/46—Indirect determination of position data
    • G01S17/48—Active triangulation systems, i.e. using the transmission and reflection of electromagnetic waves other than radio waves
    • 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
    • G01S17/87—Combinations of systems using electromagnetic waves other than radio waves
    • 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
    • G01S7/4808—Evaluating distance, position or velocity data
    • 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
    • G01S7/4811—Constructional features, e.g. arrangements of optical elements common to transmitter and receiver
    • G01S7/4813—Housing arrangements
    • 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
    • G01S7/51—Display arrangements

Definitions

  • the present invention relates to non-contact measuring devices and, more particularly, to a handheld measurement device that uses laser emitter/ receiver components and a computer processing unit to perform calculations of distance, angle, arc length and/or the radius between two points.
  • Non-contact measurement devices for quickly and accurately obtaining straight-line distance and angle measurements are well known in the related art. These devices typically use one or more light generating components which emit a light signal or pulse through a lens and onto a surface of a structure associated with the desired measurement. Light energy returns from the surface and through the same detector lens or a separate lens. The data collected from the light pulse transmission and return (i.e. receipt) is used to determine straight-line distance, usually based on elapsed time between light pulse transmission and receipt. Examples of non-contact distance measurement devices are found in U.S Patents to Ehbets et al., No. 5,949,531; Gaechter, No. 5,892,576; Hinderling et al., No. 6,411,371; and Hertzman et al., No. 6, 115, 112.
  • Non-contact measurement device that determines diameter and radius is found in the U.S. Patent to Gelbart, No. 5,291,273.
  • the device in Gelbart is not a handheld device, but uses light emitting devices to project two beams of light through a lens. One beam of light is directed to the center of the object being measured and the other beam is directed at a fixed distance from the first beam. The beams reflect off of the object and the angle between the reflected beams is used to determine the radius.
  • the present invention is directed to a handheld device that is adapted to perform non-contact measurement to determine distances, angles, arc lengths and radii between select points on physical structures.
  • the device is assembled and contained within a handheld, portable housing and includes various control and input keys, a visual display and three laser components.
  • Each laser component includes a laser emitter including a laser emitter diode with an associated emitter lens.
  • the laser emitters of the three laser components are set at fixed, predetermined angles relative to one another at the front end of the housing.
  • Each laser component also includes a laser receiver with an associated detector lens correspondingly positioned in alignment with the emitter lens.
  • the laser components are adapted to emit and receive light signals to collect image data representative of a straight line distance between a predetermined set point within the device and a point on the surface of the measured structure.
  • a processing unit receives the image data from the three laser components to determine straight line distance measurements. These measurements are used in conjunction with known angles between the three laser emitters to perform calculations that determine distance, angle, arc length and radius of the physical structures.
  • Figure 1 is a top plan view of the handheld non-contact measurement device, in accordance with a preferred embodiment of the present invention, illustrating an arrangement of control and input elements or keys, and a visual display;
  • Figure 2 is a general schematic diagram showing the primary internal components of the non-contact measurement device of Figure i ;
  • Figure 3 is a flow diagram of the distance measuring operation of the device
  • Figure 4 is a general plan view illustrating various methods to measure straight-line distance between two points using the non- contact measurement device of the present invention
  • Figure 5 is a flow diagram of the angle measuring operation performed by the non-contact measurement device of the present invention
  • Figure 6A is a general diagram illustrating use of the non-contact measurement device to measure an inside corner between two wall surfaces
  • Figure 6B is a general diagram illustrating use of the non-contact measurement device to measure an outside corner angle between two adjacent wall surfaces
  • Figure 7 is a flow diagram of the radius measuring operation performed by the non-contact measurement device of the present invention.
  • Figure 8A is a general diagram illustrating use of the non-contact measurement device to determine the inside radius of a concave surface, as well as the arc length between two points of the surface, the total span of the arc, the straight-line distance between two points along the concave surface and the distance between the imaginary line between the two points on the arc and the center of the arc segment between the two points; and
  • Figure 8B is a general diagram illustrating use of the non-contact measurement device to determine the outside radius of a convex surface as well as the total arc length, the span of the arc, the straight-line distance between the two points along the arc and the distance between the imaginary line between the two points on the arc and the center of the arc segment between the two points.
  • the present invention is directed to a portable, handheld non- contact measuring device and is generally indicated as 100 throughout the drawings.
  • the electronic components of the device are contained within a housing 110, as generally illustrated in Figures 1 and 2.
  • the top face 112 of the housing 110 presents an arrangement of control and input elements or keys (labeled 1-21) and a visual display 1 14 such as an LCD panel.
  • the device uses 3 laser emitter/ receiver components labeled A-1,
  • Each laser emitter/ receiver component includes an associated laser emitter diode 120 for generating a laser light signal and a laser receiver 122 for receiving a returning light signal.
  • Each laser emitter/ receiver component A-1, A-2 and A-3 further includes an associated emitter lens 124 and detector lens 126 on the front end 130 of the housing 110.
  • a centering indicator B directs the user to move the handheld device 100 to the left or to the right in order to find the center of an angle when measuring an angle between two surfaces, or to find the optimal position for radius measurement.
  • the C function symbol on the display indicates the type of measurement being performed (e.g.
  • the indicator labeled as D on the display lists recent measurements that have been taken such as linear, area, angle, radius, etc. Using the scroll keys 13 and 17, the user can go back or forward through a list of previously acquired measurements.
  • the display function labeled E shows a current measurement or the sum of two or more saved measurements.
  • a processor 140 in the housing receives all control commands that are entered by depressing the numerous control keys, and is programmed to perform all measurement calculations based on data received from the return laser light signals.
  • the processor 140 is also programmed to change modes in response to mode control commands entered with the control keys.
  • the processor 140 communicates with all three laser emitter/ receiver components A-l, A-2 and A-3 to control generation, emission and receipt of laser light signals, and the processor 140 controls operational functions of the display 114, including transmission of function, mode and measurement data for visual presentation on the display 1 14.
  • the control elements or keys on the device are shown in Figure 1. In particular, power key 1 is used to energize (turn on) and de-energize (turn off) the device. Control key 2 is pressed once for targeting and twice for measuring.
  • Control key 3 operates a backlight on the display 114 for ease of reading the display in low ambient light level conditions.
  • Control key 4 operates a scan mode for continuous beams to find minimum or maximum linear, center angle or optimal radial placement.
  • Control key 5 allows the operator to change modes of operation of the device or to change other control elements/keys to different operation modes.
  • Control key 6 is used to set linear measurement mode.
  • Control key 7 is used to set area measurement mode.
  • Control key 8 operates the cubic volume measurement mode.
  • the device can be changed to a Pythagorean mode using control key 9.
  • the Pythagorean mode can be used to determine the distance between the base and top of a structure, thereby providing a height measurement.
  • Control key 10 is pressed once to obtain a full angle measurement of a corner formed by two adjacent wall surfaces. Pressing the mode control key 5 and the angle measurement control key 10 provides a measurement for a 1 ⁇ 2 angle.
  • the mode key 5 can also be used to switch between decimal, degree-minute- second or radian measurement.
  • the bevel/ miter control key 12 is used to indicate the miter and bevel angles of, for instance, crown moulding and base board trim.
  • control keys 13 and 17 provide for a scroll-up and scroll-down function for indicators on the display.
  • Control key 14 is pressed once for determining radius measurement. Pressing control key 14 twice provides for diameter measurement. Pressing the mode key 5 simultaneously with control key 14 allows the user to input span (run) of an arc. This allows for a distance measurement of the span to determine the running length of the arc.
  • Control key 15 is pressed once when measuring the area of a circle and twice to determine the volume of a cylinder.
  • Control key 16 is used in conjunction with mode key 5 to change between measurement units such as decimal feet, feet and inches, and metric units.
  • Control key 18 allows the user to add a current measurement to memory.
  • Control key 19 subtracts a current measurement from memory.
  • Control key 20 is used to recall the sum total of all measurements in memory.
  • Control key 21 allows the user to clear the memory.
  • the device provides for a USB or Bluetooth connection, allowing the user to download measurement information to a computer or PDA. Also, the bottom end of the housing is provided with a tripod mount for vertical measurements.
  • Figure 3 illustrates the sequence of operation of the non-contact measurement device 100 to measure straight- line distance.
  • the straight-line distance measurement may be taken from the front end of the housing of the device to a point on a surface, the rear end of the housing to a point on the surface or, alternatively, the measurement can be made between two remote points on a surface.
  • Figure 4 illustrates the three different linear measurement operations.
  • the user can hold the front end of the device at an inside corner of a wall surface and direct the laser beam to an adjacent wall surface at the opposite end of the wall to determine the length of wall 50.
  • the user would place the back end of the device 100 against wall surface 54 and direct the laser beam onto the surface of wall 50.
  • the mode of operation for measurement from the back end of the housing, the distance between the back end of the housing 110 of the device 100 and the wall surface 50 is measured, thereby indicating the length of wall 52 that spans between walls 50 and 54.
  • FIG 4 Another mode of straight-line distance measurement is shown in Figure 4, wherein it is desired to measure between two points on a wall surface.
  • This mode known as the Pythagorean mode, requires the formation of a right angle triangle. This is achieved by directing one laser beam 64 from the device at an angle which is perpendicular (90°) to a point on the surface of the wall 56.
  • the second straight-line distance measurement can be made by directing laser beam 66 at an angle towards the corner of the walls 56, 58, forming the hypotenuse of the right triangle.
  • a right triangle is formed by the two laser beam paths 64, 66 and wall surface 56.
  • the distance between point 60 and point 62 on wall surface 56 can be determined using the Pythagorean Theorem.
  • Figure 5 shows a flow diagram depicting the angle measuring operation performed by the non-contact measurement device 100.
  • the device can be used to measure both the inside corner angle (i.e. less than 180°) as well as an outside corner angle (i.e. greater than 180°).
  • ⁇ angle between center beam (A2) and either one of side beams (Al or A3).
  • Beams "Al”, “A2” and “A3” are set at fixed angles from each other ( ⁇ ).
  • the processing unit is programmed to "know” that the three beams are set at fixed angles relative to each other. Additionally, the processing unit is programmed to "know” at which point beams "Al”, “A2”, and “A3” would converge (x) within the device (i.e. behind the laser components A-l, A-2 and A-3).
  • the user targets the center of the angle with beam "A2".
  • the device emits beams in sequence so as not to receive confusing readings from other beams.
  • the display indicates in which direction to move the device until beams "Al” and “A3” are equidistant. Once properly centered, the device can perform the following functions: a) Determine the distance from point V to points targeted by beams "Al", “A2", and "A3".
  • the device can calculate miter and bevel settings for crown moulding or many other applications requiring a compound angle. To obtain miter setting only, as with base mouldings or other flat materials, input "0" as spring angle. Use following to obtain desired values:
  • FIG. 8A and 8B illustrate measurement of radius, arc length, arc span and other measurements of both an inside radius or concave surface (Figure 8A) and an outside radius for convex surface ( Figure 8B).
  • Figures 8A and 8B illustrate measurement of radius, arc length, arc span and other measurements of both an inside radius or concave surface ( Figure 8A) and an outside radius for convex surface ( Figure 8B).
  • Figures 8A and 8B illustrate measurement of radius, arc length, arc span and other measurements of both an inside radius or concave surface (Figure 8A) and an outside radius for convex surface (Figure 8B).
  • ⁇ angle between center beam (A2) and either one of side beams (Al or A3).
  • ⁇ angle formed by radii originating from center of circle and reaching extreme points of span of arc (s) .
  • Beams "Al” and “A3” are set at a fixed angle off center beam “A2".
  • the processing unit is programmed to "know” the angle at which the beams are set.
  • the processing unit is programmed to "know” the point at which beams “Al”, “A2”, and “A3” would converge (x).
  • the user targets an arc or circle section with the center beam A2.
  • the device emits beams in sequence so as not to receive confusing readings from other beams.
  • the display indicates in which direction to move device until beams "Al” and “A3" are equidistant.
  • the device can determine the volume of a cylinder by adding the height measurement in the well known formula: hnr 2

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

Abstract

La présente invention concerne un appareil portatif conçu pour prendre des mesures sans contact, de façon à déterminer des distances, des angles, des longueurs d'arcs, et des rayons entre des points choisis sur des structures physiques. Cet appareil, qui est monté et contenu à l'intérieur d'un boîtier portable pouvant se tenir à la main, comporte plusieurs boutons de commande et touches d'entrée, un écran de visualisation, et trois composants laser. Chaque composant laser comporte un émetteur laser comprenant une diode d'émetteur laser à laquelle est associé un objectif d'émetteur. Les émetteurs laser des trois composants laser sont montés selon des angles fixes et prédéfinis entre eux, sur l'extrémité antérieure du boîtier. Chaque composant laser comporte également un récepteur laser auquel est associé un objectif de détecteur disposé dans l'alignement de l'objectif d'émetteur correspondant. Les composants laser sont conçus pour émettre et recevoir des signaux lumineux de façon à recueillir des données d'images caractéristiques de la distance en ligne droite entre un point prédéterminé établi à l'intérieur de l'appareil et un point de la surface de la structure mesurée. Une unité de traitement reçoit les données d'images en provenance des trois composants laser de façon à déterminer les mesures de distances en ligne droite. Utilisées conjointement avec les angles connus entre les trois émetteurs laser, ces mesures permettent d'effectuer des calculs donnant des valeurs de distances, d'angles, de longueurs d'arcs et de rayons des structures physiques.
PCT/US2009/006703 2009-12-23 2009-12-23 Appareil de mesure sans contact WO2011078838A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/US2009/006703 WO2011078838A1 (fr) 2009-12-23 2009-12-23 Appareil de mesure sans contact

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/US2009/006703 WO2011078838A1 (fr) 2009-12-23 2009-12-23 Appareil de mesure sans contact

Publications (1)

Publication Number Publication Date
WO2011078838A1 true WO2011078838A1 (fr) 2011-06-30

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PCT/US2009/006703 WO2011078838A1 (fr) 2009-12-23 2009-12-23 Appareil de mesure sans contact

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2014035187A1 (fr) * 2012-08-30 2014-03-06 Samsung Electronics Co., Ltd. Procédé et appareil permettant de générer des informations de forme d'un objet
EP2863175A1 (fr) * 2013-10-18 2015-04-22 Techtronic Power Tools Technology Limited Procédé de mesure d'une zone d'une surface cible
CN106524925A (zh) * 2016-12-15 2017-03-22 南京工程学院 一种非接触式大型圆形容器截面周长测量装置及方法
CN114577128A (zh) * 2022-05-09 2022-06-03 广东电网有限责任公司佛山供电局 一种线缆验收方法和装置
US11650179B2 (en) 2017-10-19 2023-05-16 Sanofi Analyte measurement device

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4789243A (en) * 1986-07-30 1988-12-06 Amada Engineering & Service & Co., Inc. Orientation determining system for a device
US20030218736A1 (en) * 2002-04-02 2003-11-27 Torsten Gogolla Optical lateral distance hand-held measuring device
JP2004085529A (ja) * 2002-06-25 2004-03-18 Matsushita Electric Works Ltd レーザー測距装置及び方法
US20050174560A1 (en) * 2004-01-01 2005-08-11 Amir Imber Multi-beam laser rangefinder
US20070058155A1 (en) * 2005-09-14 2007-03-15 Booker Reginald E Jr Non-contact measurement device

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4789243A (en) * 1986-07-30 1988-12-06 Amada Engineering & Service & Co., Inc. Orientation determining system for a device
US20030218736A1 (en) * 2002-04-02 2003-11-27 Torsten Gogolla Optical lateral distance hand-held measuring device
JP2004085529A (ja) * 2002-06-25 2004-03-18 Matsushita Electric Works Ltd レーザー測距装置及び方法
US20050174560A1 (en) * 2004-01-01 2005-08-11 Amir Imber Multi-beam laser rangefinder
US20070058155A1 (en) * 2005-09-14 2007-03-15 Booker Reginald E Jr Non-contact measurement device

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2014035187A1 (fr) * 2012-08-30 2014-03-06 Samsung Electronics Co., Ltd. Procédé et appareil permettant de générer des informations de forme d'un objet
US9612113B2 (en) 2012-08-30 2017-04-04 Samsung Electronics Co., Ltd. Method and apparatus for generating shape information of object
EP2863175A1 (fr) * 2013-10-18 2015-04-22 Techtronic Power Tools Technology Limited Procédé de mesure d'une zone d'une surface cible
CN104567753A (zh) * 2013-10-18 2015-04-29 创科电动工具科技有限公司 测量目标表面的面积的方法
CN106524925A (zh) * 2016-12-15 2017-03-22 南京工程学院 一种非接触式大型圆形容器截面周长测量装置及方法
US11650179B2 (en) 2017-10-19 2023-05-16 Sanofi Analyte measurement device
CN114577128A (zh) * 2022-05-09 2022-06-03 广东电网有限责任公司佛山供电局 一种线缆验收方法和装置
CN114577128B (zh) * 2022-05-09 2022-07-19 广东电网有限责任公司佛山供电局 一种线缆验收方法和装置

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