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WO2011067013A1 - Appareil de mesure de distance pour la mesure de distance sans contact avec un dispositif de mesure d'angle intégré - Google Patents

Appareil de mesure de distance pour la mesure de distance sans contact avec un dispositif de mesure d'angle intégré Download PDF

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Publication number
WO2011067013A1
WO2011067013A1 PCT/EP2010/064871 EP2010064871W WO2011067013A1 WO 2011067013 A1 WO2011067013 A1 WO 2011067013A1 EP 2010064871 W EP2010064871 W EP 2010064871W WO 2011067013 A1 WO2011067013 A1 WO 2011067013A1
Authority
WO
WIPO (PCT)
Prior art keywords
angle
distance measuring
distance
measuring device
measuring
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.)
Ceased
Application number
PCT/EP2010/064871
Other languages
German (de)
English (en)
Inventor
Benjamin Visel
Christoph Koch
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.)
Robert Bosch GmbH
Original Assignee
Robert Bosch GmbH
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 Robert Bosch GmbH filed Critical Robert Bosch GmbH
Priority to EP10766259A priority Critical patent/EP2507585A1/fr
Publication of WO2011067013A1 publication Critical patent/WO2011067013A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • 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
    • G01C15/002—Active optical surveying 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
    • G01S17/10—Systems determining position data of a target for measuring distance only using transmission of interrupted, pulse-modulated 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
    • G01S17/86—Combinations of lidar systems with systems other than lidar, radar or sonar, e.g. with direction finders
    • 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

Definitions

  • the invention relates to a distance measuring device for non-contact distance measurement, in particular a hand-held device for non-contact distance measurement.
  • Distance measuring devices typically measure a distance of an appropriate object from a reference point to which the rangefinder is applied.
  • Such distance measuring devices can be designed, for example, as a laser measuring device, wherein a time-modulated laser beam is emitted from a laser serving as a light source to the object and with the aid of a photosensitive detector from the object reflected light is detected, so that for example due to a phase difference between the emitted and the detected light on a time of flight and thus a distance between the distance measuring device and the appropriate object can be deduced.
  • the distance measuring device can also be designed as an ultrasonic measuring device or as a high-frequency or radar measuring device.
  • the distance is determined by direct or indirect measurement of the transit time of a modulated signal emitted by the measuring device, which is reflected at the object to be measured and subsequently received again by the measuring device.
  • an optoelectronic laser distance measuring device is known.
  • the measuring device In order to be able to precisely arrange the measuring device in the frequently occurring application of a measurement starting from an inner surface, such as an inner wall, a floor or a ceiling, on the inner surface serving as a reference, the measuring device has a retractable and foldable Measuring pin, by means of which the measuring device can be applied to the reference surface.
  • the use of the measuring pin can be advantageous in particular in cases in which a distance up to a depression in a surface, for example, to the bottom of a groove, to be measured.
  • One idea of the present invention is based on the finding that distances can be measured both directly and indirectly with conventional measuring devices.
  • two different methods are known. In the first method, an angle of 90 ° is required, so that subsequently the distance to be measured can be calculated using the theorem of Pythagoras. In the second method, the angle between two partial measurements is recorded and then the distance is calculated using the cosine theorem.
  • a distance measuring device which, in addition to a distance measuring unit for non-contact determination of a distance to the target object along a distance measuring direction, also has an angle measuring unit, wherein the angle measuring unit is designed to make an angle to be determined, which correlates with an angle between a reference direction and the distance measuring direction.
  • the "reference direction" can be any direction predetermined, for example, by a reference object, with respect to the one orientation of the
  • the reference direction may be fixed with respect to a wall, a floor or a ceiling serving as a reference plane, so that an orientation of the measuring direction within a room can be determined by determining an angle between the reference direction and the distance measuring direction.
  • the angle measuring unit can hereby be designed to measure the angle and to generate an electronic angle measurement signal.
  • the angle measuring unit can automatically measure the angle, ie automatically, and forward the generated electronic angle measuring signal, for example, to an indicator integrated in the distance measuring device so that a user can visually display the angle measured by the angle measuring unit to the user.
  • the electronic angle measurement signal may be forwarded to a calculation unit integrated or separately provided in the distance measuring device, whereupon the calculation unit based on the angle determined by the angle measuring unit and the distance determined by the distance measuring unit a dimension size, such as an indirectly measured distance, a surface or can determine a volume.
  • the distance measuring device may have a measuring pin, which is pivotable relative to a housing of the distance measuring device and thus relative to the distance measuring.
  • the angle measuring unit can hereby be designed to determine an angle which correlates with an angle between a main extension direction of the measuring pin and the distance measuring direction.
  • an axis can be provided on a housing of the distance measuring device about which the measuring pin can be pivoted, for example, by at least 180 °, or preferably can be pivoted by up to 270 °, so that the measuring pin in relation to the distance measuring unit and the angle measuring unit receiving housing can assume a variety of angular positions.
  • the measuring pin can be infinitely pivotable here or, al- ternatively, be pivotable in certain angle stages, for example in 2 ° steps or 5 ° steps.
  • the measuring pin can engage in a 90 ° position and / or a 180 ° position in order to enable a measurement of distances from recesses out.
  • the measuring pin can be folded into the housing or selected to be hinged to the housing.
  • the housing may be formed cuboid and the measuring pin to be pivotable about an axis arranged in a corner of the housing.
  • the combined range and angle measurement according to the invention which allows the determination of distance values from the measurement of distances and relative angular positions, it is possible not only for positions of the measuring pin of 90 ° or 270 ° relative to the back of the housing, but also for any angle ⁇ to carry out a distance measurement between the tip of the measuring pin and an object to be measured.
  • the angle measurement function and the reference point switching for the distance measurement are ensured by the same structural unit of the rangefinder.
  • the fold-out attachment pin which typically serves to change the device-side reference point for the distance measurement, is at the same time designed as a measuring pin for the angle measurement function of the device according to the invention.
  • the angle measuring unit can have, for example, a potentiometer, a yaw rate sensor or an incremental encoder.
  • a potentiometer can be arranged on an axis about which a measuring pin is pivotable, so that the potentiometer is correspondingly actuated when the measuring pin is pivoted and a measured value supplied by the potentiometer thus directly permits conclusions about an angular arrangement of the pivoted measuring pin.
  • the distance measuring unit can be designed for optical distance measurement and, for this purpose, a light source for emitting light along the distance measuring direction towards the target object, a light detector for receiving light returning from the target object and a light detector
  • a light source for emitting light along the distance measuring direction towards the target object
  • a light detector for receiving light returning from the target object
  • a light detector for receiving light returning from the target object
  • a light detector for receiving light returning from the target object
  • Have evaluation unit for determining the distance to the target object based on detection signals of the light detector.
  • a main idea of the present invention can be seen therein to provide a measuring device in which both the functions of a distance meter and the functions of a protractor are combined.
  • a user can use such a device as usual, e.g. Detect interior geometries via distance measurements.
  • the user can, for example, determine the angle between individual room walls by means of a measuring pin integrated in the multifunction measuring meter.
  • a measuring pin integrated in the multifunction measuring meter.
  • the measuring pin which is often already provided in conventional distance measuring devices as a fold-out mechanical stop, can be used to determine the angle and thus indirectly to determine the orientation of the distance measuring device.
  • the floor plan can build up by measured lengths and angles, preferably on the display of the laser rangefinder gradually and thus can be retrieved on site.
  • a recording of the floor plan can also be made on a PDA or notebook via wireless transmission of the measured values (distance + angle).
  • the user can specify to the system at which point the current distance measurement is to be inserted in the floor plan model, for example at the beginning or end point of the previous distance value, below the measured angle.
  • the measurement data or the floor plan can be checked on site. For example, the system may require the user to re-measure or check the accuracy across the room diagonal so that incorrect measurements can be detected on-site.
  • Fig. 1 shows a perspective view of a distance measuring device according to an embodiment of the present invention.
  • FIG. 2 shows a detailed illustration of a rear end of the distance measuring device according to an embodiment of the present invention for illustrating the function of a pivotable measuring pin.
  • Fig. 3 schematically shows an internal structure of a distance measuring device according to an embodiment of the present invention.
  • FIGS. 4 to 7 schematically show a distance measuring device according to an embodiment of the present invention with a pivotable measuring pin in different angular arrangement geometries.
  • FIG. 1 shows a distance measuring device 10, which has a housing 12 with a housing front side 14 and a housing rear side 16.
  • the housing 12 is formed substantially cuboid.
  • various function keys 22 are arranged, for example for the switching on and off and the retrieval of various measuring programs, as well as a measuring key 24 for triggering a measuring process.
  • an output unit in the form of a display 26 located at the top 20 of the measuring device 10, an output unit in the form of a display 26, by means of which, for example, a determined measured value and additional information about the selected measurement program can be displayed.
  • the distance measuring device 10 has on its housing front side 14 an outlet opening 28 for measuring radiation, wherein the measuring radiation can emerge from the measuring device 10, for example as a modulated laser beam.
  • a second opening 30 forms an inlet opening for the measurement signal reflected at the target object.
  • a fold-out and pivotable measuring pin 46 is provided on the rear side 16 of the distance measuring device 10.
  • the measuring pin 46 can be folded into a recess 12 provided in the housing 12 so as not to protrude distractingly during transport, for example.
  • the measuring pin 46 can be pivoted out of the housing 12, so that it protrudes outwards.
  • the distance measuring device 10 can thus with the aid of the measuring pin 46, for example, against a recessed reference surface, for example, a deeper groove, a
  • the measuring pin 46 can be pivoted about an axis 48 arranged in a rear corner of the housing 12 around up to 270 °.
  • Position "I” shown in which the measuring pin 46 projects at a 90 ° angle to the rear of the housing 12.
  • a position is indicated in dashed lines with "II” in which the measuring pin 46 protrudes laterally from the housing 12, for example at a 180 ° angle.
  • the device-side reference point of the distance measurement can be manually switched by a user or also automatically by the device.
  • the device-side reference point for a distance measurement can be used to a target object in the front of the device 14, in the rear of the device 16 or else in the tip 50 of the device
  • measuring pin 46 To define measuring pin 46.
  • the combined distance and angle measurement according to the invention which permits the determination of distance values from the measurement of distances and relative angular positions, makes it possible not only for positions of the measuring pin of 90 ° (position I) or 270 ° (position II) , but also for any angle ⁇ to a distance measurement between the tip 50 of the measuring pin and an object 70 to be measured determine.
  • the angle measurement function and the reference point switching for the distance measurement are ensured by the same structural unit of the rangefinder.
  • the fold-out contact pin which typically serves to change the device-side reference point for the distance measurement, is at the same time designed as a measuring pin for the angle measuring function of the device according to the invention.
  • FIG. 4 the distance measuring device 10 and the pivotable about 270 ° measuring pin 46 is shown again schematically.
  • Different measuring situations are shown in FIGS. 5 to 7, in which the measuring pin 46 is pivoted such that it bears against a reference surface 52, so that an angle ⁇ between the measuring pin 46 and a side surface 54 of the measuring device 10 is an orientation of the measuring device Meter reproduces.
  • the side surface 54 of the measuring device 10 is in this case parallel to a direction of the light emitted by the distance measuring device, i. parallel to the distance measuring direction
  • the measuring device 10 and the measuring pin 46 mounted thereon are used such that the side surface 54 of the measuring device 10 rests against an edge 56 of a wall geometry to be measured and the measuring pin 46 abuts against another edge 58 of the wall geometry to be measured that with the aid of the measuring pin 46 an angle ⁇ enclosed by the wall geometry can be determined.
  • FIG. 5 shows a constellation in which the measuring device 10 is applied to an external angle with ⁇ ⁇ 90 °.
  • Fig. 6 shows a constellation in which the measuring device 10 to a
  • FIG. 7 shows a constellation in which the measuring device 10 is applied to an internal angle with ⁇ > 90 °.
  • the angle determined by means of the applied measuring pin is an external or an internal angle can be communicated to the measuring instrument, for example, via a manual input by the user.
  • a suitable sensor system may also be provided, for example with a light sensor. With the information obtained can be determined, for example, as the measuring device 10 interprets the measured angle and further processed, for example, in a subsequent creation of a floor plan.
  • the distance between the measuring tip 50 of the measuring pin 46 and an object 70 to be measured can also be determined.
  • FIG 3 shows schematically a distance measuring device 10 according to an embodiment of the present invention with components integrated therein, such as, inter alia, a distance measuring unit 32 and an angle measuring unit 84.
  • time-modulated laser light 62 emitted by a laser 60 is collimated by a collimation optics 64 before it leaves the housing 12 of the distance measuring device 10 through the outlet opening 28.
  • the emitted laser light 66 emerges along a distance measuring direction 68 toward the target object 70.
  • Light 72 reflected back from the target object 70 re-enters the housing 12 of the measuring device 10 through the opening 30. There it is through a further optics 74 on a detector
  • Both the laser 60 and the detector 76 are connected to an evaluation unit 78.
  • the evaluation unit 78 controls the temporal modulation of the light emitted by the laser 60 and, on the other hand, receives the likewise time-modulated detection signal from the detector 76. By determining a phase difference between these two signals, it is possible to deduce a time of flight of the emitted and reflected-back light. From this time of flight, the distance to be measured can finally be calculated.
  • the evaluation unit 78 is further connected to a potentiometer 80.
  • This potentiometer 80 interacts mechanically with the measuring pin 46, wherein the potentiometer 80 is activated by pivoting the measuring pin 46.
  • the potentiometer and the measuring pin 46 belong to the angle measuring unit 84
  • Reading a measurement signal generated by the potentiometer 80 can be closed to an angular arrangement of the measuring pin 46 relative to the housing 12.
  • this angle arrangement correlates with an angle between a reference direction 82 predetermined by the main extension direction of the measuring pin 46 and the distance measuring direction 68, in the direction of which the light 66 emitted by the laser 60 is emitted. Since a measured value read out from the potentiometer 80 correlates with the reference direction 82, the evaluation unit 78 can thus conclude that the distance measuring device 10 is oriented in space.
  • a calculation unit 86 integrated in the evaluation device 78 can use the angle determined with the aid of the measuring pin 46 to estimate a further dimension variable, such as a distance, an area or a volume, based on the angle and a simultaneously measured distance to the target object 70 to calculate.
  • the evaluation unit 78 thus enables the determination of distances, angles and combined distance / angle quantities.
  • an inboard acute angle could be based on knowledge of a distance to a wall opposing the acute angle, as well as the knowledge of the angle ⁇ included by the acute angle and taking into account the dimensions of the meter 10 itself a width of the opposite wall to be closed.
  • Both the determined distance to the target object 70 and the angle determined with the aid of the measuring pin 46 can be output by the evaluation unit 78 via an output 88 to a display 26 (not shown in FIG. 3) in order to be displayed to a user , as separate values or combined measurements taking into account distance and angle.
  • angle measuring unit 84 may alternatively be equipped with a rotation rate sensor, an incremental encoder or other suitable device for determining a swivel angle of the measuring pin 46 instead of a potentiometer 80 engaged with the axis 48.

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  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • General Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Optical Radar Systems And Details Thereof (AREA)
  • Measurement Of Optical Distance (AREA)

Abstract

L'invention concerne un appareil (10) de mesure de distance qui présente une unité de mesure d'angle (84) en plus d'une unité de mesure de distance (32) pour déterminer sans contact une distance à un objet cible (70) le long d'une direction de mesure de distance (68). L'unité de mesure d'angle (84) est en l'occurrence conçue de manière à déterminer un angle qui est corrélé à un angle entre une direction de référence (82) et la direction de la mesure de distance (68). L'appareil de mesure de distance (10) combine ainsi les propriétés d'un appareil de mesure de distance usuel, par exemple d'un dispositif de mesure de distance laser, avec celles d'un dispositif de mesure d'angle et permet donc, par détermination simultanée d'une distance à un objet cible (70) ainsi que d'une orientation de l'appareil de mesure de distance (10), de déterminer indirectement par exemple des étendues ou des surfaces.
PCT/EP2010/064871 2009-12-02 2010-10-06 Appareil de mesure de distance pour la mesure de distance sans contact avec un dispositif de mesure d'angle intégré Ceased WO2011067013A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP10766259A EP2507585A1 (fr) 2009-12-02 2010-10-06 Appareil de mesure de distance pour la mesure de distance sans contact avec un dispositif de mesure d'angle intégré

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102009047387.4 2009-12-02
DE102009047387A DE102009047387A1 (de) 2009-12-02 2009-12-02 Entfernungsmessgerät zur berührungslosen Abstandsmessung mit integriertem Winkelmesser

Publications (1)

Publication Number Publication Date
WO2011067013A1 true WO2011067013A1 (fr) 2011-06-09

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2010/064871 Ceased WO2011067013A1 (fr) 2009-12-02 2010-10-06 Appareil de mesure de distance pour la mesure de distance sans contact avec un dispositif de mesure d'angle intégré

Country Status (3)

Country Link
EP (1) EP2507585A1 (fr)
DE (1) DE102009047387A1 (fr)
WO (1) WO2011067013A1 (fr)

Cited By (4)

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CN105021132A (zh) * 2015-07-15 2015-11-04 国家电网公司 激光非接触式中置柜手车触头行程测试仪
CN105021158A (zh) * 2015-07-15 2015-11-04 国家电网公司 手车开关触头插入深度测试仪
CN105066873A (zh) * 2014-07-18 2015-11-18 国家电网公司 测量准确的断路器触头啮合深度测量装置
CN105203029A (zh) * 2015-08-18 2015-12-30 国网四川省电力公司德阳供电公司 一种手车开关柜触头接触行程测试系统及其测试方法

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DE102011116303B3 (de) * 2011-10-18 2012-12-13 Trimble Jena Gmbh Geodätisches Messsystem und Verfahren zum Betreiben eines geodätischen Messsystems
EP2698602A1 (fr) * 2012-08-16 2014-02-19 Leica Geosystems AG Appareil de mesure de distance pouvant être tenu à la main avec unité de détermination d'angle

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WO2005029122A1 (fr) * 2003-09-12 2005-03-31 Leica Geosystems Ag Procede et dispositif pour assurer une interaction entre un appareil de mesure de distance et une application de mesure
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Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105066873A (zh) * 2014-07-18 2015-11-18 国家电网公司 测量准确的断路器触头啮合深度测量装置
CN105066874A (zh) * 2014-07-18 2015-11-18 国家电网公司 测量方便的断路器触头啮合深度测量装置
CN105698668A (zh) * 2014-07-18 2016-06-22 江苏省电力公司南通供电公司 确保测量精度的断路器触头啮合深度测量装置
CN105698667A (zh) * 2014-07-18 2016-06-22 江苏省电力公司南通供电公司 方案合理的断路器触头啮合深度测量装置
CN105698666A (zh) * 2014-07-18 2016-06-22 江苏省电力公司南通供电公司 实现精确测量的断路器触头啮合深度测量装置
CN105021132A (zh) * 2015-07-15 2015-11-04 国家电网公司 激光非接触式中置柜手车触头行程测试仪
CN105021158A (zh) * 2015-07-15 2015-11-04 国家电网公司 手车开关触头插入深度测试仪
CN105203029A (zh) * 2015-08-18 2015-12-30 国网四川省电力公司德阳供电公司 一种手车开关柜触头接触行程测试系统及其测试方法

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Publication number Publication date
EP2507585A1 (fr) 2012-10-10
DE102009047387A1 (de) 2011-06-09

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