CN112857261A - Scanning device and gap detection method thereof - Google Patents
Scanning device and gap detection method thereof Download PDFInfo
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- CN112857261A CN112857261A CN202110079114.XA CN202110079114A CN112857261A CN 112857261 A CN112857261 A CN 112857261A CN 202110079114 A CN202110079114 A CN 202110079114A CN 112857261 A CN112857261 A CN 112857261A
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- 238000001514 detection method Methods 0.000 title claims abstract description 39
- 238000012545 processing Methods 0.000 claims description 24
- 238000000034 method Methods 0.000 description 11
- 238000005259 measurement Methods 0.000 description 10
- 238000009434 installation Methods 0.000 description 7
- 230000003287 optical effect Effects 0.000 description 7
- 230000008569 process Effects 0.000 description 6
- 238000003384 imaging method Methods 0.000 description 5
- 238000013016 damping Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000013011 mating Effects 0.000 description 3
- 238000012360 testing method Methods 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
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- 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
- G01B11/24—Measuring arrangements characterised by the use of optical techniques for measuring contours or curvatures
- G01B11/25—Measuring arrangements characterised by the use of optical techniques for measuring contours or curvatures by projecting a pattern, e.g. one or more lines, moiré fringes on the object
- G01B11/2545—Measuring arrangements characterised by the use of optical techniques for measuring contours or curvatures by projecting a pattern, e.g. one or more lines, moiré fringes on the object with one projection direction and several detection directions, e.g. stereo
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- 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
- G01S17/88—Lidar systems specially adapted for specific applications
- G01S17/89—Lidar systems specially adapted for specific applications for mapping or imaging
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- 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
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- Electromagnetism (AREA)
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- Length Measuring Devices By Optical Means (AREA)
Abstract
The invention relates to the technical field of scanners, in particular to a scanning device and a gap detection method thereof. The scanning equipment comprises a body, at least two cameras and at least one light projector, wherein the at least two cameras and the at least one light projector are respectively arranged on the body, and the at least one light projector is used for projecting laser lines; when the scanning equipment is used for detecting gaps, at least one camera is used for collecting gap data, and the scanning equipment can detect the gaps by changing the opening number of the cameras; when the scanning device is used for scanning, at least two cameras are used for collecting the data of the measured object. The invention has the advantages that: meanwhile, the gap detection function is achieved, switching is convenient, and efficiency is high.
Description
Technical Field
The invention relates to the technical field of scanners, in particular to a scanning device and a gap detection method thereof.
Background
The existing partial scanner is designed to be small and exquisite, also called as a handheld scanner, i.e. a user can use the scanner to perform corresponding scanning by directly grasping the scanner with a hand.
However, when the existing scanner detects a gap, a separate device, usually a surface difference analyzer, is needed for detection; when the scanning is a large-area object, the scanning needs to be switched to a traditional scanner, the switching is complex, and the working efficiency is greatly reduced.
Disclosure of Invention
In view of the above, it is desirable to provide a scanning apparatus and a method for detecting a gap thereof, which has a gap detection function, is convenient to switch, and has high efficiency.
In order to solve the technical problem, the application provides the following technical scheme:
a scanning device comprises a body, at least two cameras and at least one light projector, wherein the at least two cameras and the at least one light projector are respectively arranged on the body, and the at least one light projector is used for projecting laser lines;
when the scanning equipment is used for detecting gaps, at least one camera is used for collecting gap data; when the scanning device is used for scanning, at least two cameras are used for collecting data of a measured object.
In the application, through the matching of at least two cameras and at least one light projector, the scanning equipment has a scanning function and a gap detection function, and complex switching equipment is not needed during use; when the gap detection function is used, at least one light projector and at least one camera are started, the light projector can project light onto a detected gap to form a gap image, the gap image is collected through the at least one camera, and the gap image is sent to external processing equipment to be processed to obtain required gap data; when the scanning function is used, at least one light projector and at least two cameras are started, the light projector projects light onto a measured object, the binocular imaging principle is applied, diffuse reflection light of the light is collected through the at least two cameras, and data images collected by the at least two cameras are sent to external processing equipment for data image processing, so that three-dimensional data required by the measured object are obtained; the functions are complete and simple to switch, and scanning and gap detection are performed without fussy switching of equipment with a scanning function or equipment with a gap detection function; thereby saving time and greatly improving the working efficiency.
In one embodiment, when the scanning device is used for detecting gaps, two cameras are started to acquire gap data.
So set up, use two cameras to carry out the gap detection and can improve the precision of gap detection data.
In one embodiment, the scanning device further comprises an auxiliary measuring component, and one end of the auxiliary measuring component is connected with the body and used for assisting the scanning device to rotate relative to the measured gap.
By the arrangement, the operation stability can be enhanced and the accuracy of measured data can be improved by the auxiliary measuring component; the problem that the rotation axis changes randomly due to unstable operation of a hand of a user in the rotation process, which causes errors in the measured analysis size, is avoided.
In one embodiment, the auxiliary measuring assembly comprises a connecting piece and a positioning piece, the positioning piece is abutted against the surface of the measured object, one end of the connecting piece is connected with the body, and the other end of the connecting piece is rotationally connected with the positioning piece so as to assist the body to rotate relative to the measured gap.
So set up, the user holds the body, presses the setting element and is fixed in a certain department on testee surface, and the rethread connecting piece rotates around the setting element, can realize stable rotatory detection, and easy operation and stability are strong.
In one embodiment, one side of the positioning piece is concave to form an arc-shaped concave part, and two ends of the concave part can abut against the surface of the object to be measured respectively; the mounting groove has been seted up to the opposite side of setting element, the connecting piece is kept away from the one end of body install through the pivot in the mounting groove.
So set up, the both ends of setting element concave part can support respectively and lean on in the measured object surface, install the connecting piece in the mounting groove of setting element through the pivot again to realize that the user holds the body, through the convenient measuring mode of connecting piece around the pivot pivoted on the setting element.
In one embodiment, the shaft is a damped shaft.
So set up, the simple structure of damping pivot, long service life.
In one embodiment, the connecting piece comprises a first connecting section and a second connecting section which are connected with each other, the first connecting section and the second connecting section are arranged at an angle, and the first connecting section is at least partially attached to the surface of the body and detachably connected with the body; the second connecting section is far away from the first connecting section and is connected with the positioning piece in a rotating mode.
The first connecting section can be matched with the shape of the body to support the body, so that one side surface of the body, which is provided with the light projector, can be parallel to an object to be measured; the second connecting section is perpendicular to the measured object through stretching into the mounting groove in the setting element to make the body can throw the laser line in the measured object surface perpendicularly, improve the accuracy of data among the measurement process.
In one embodiment, the connecting piece and the body are detachably connected through a thread structure or a buckling structure.
Due to the arrangement, the auxiliary measuring assembly is convenient to disassemble and assemble, and can be disassembled without the auxiliary measuring assembly when a scanning function is used; when using the gap to detect the function, need the auxiliary measuring subassembly to improve and detect stability and precision, can install it on the body, the simple structure and the easy dismounting of helicitic texture, buckle structure.
In one embodiment, the threaded structure includes a threaded member, a fitting hole is formed in one end of the connecting member, which is away from the positioning member, and the threaded member is inserted into the fitting hole and is in threaded connection with the body.
So set up, installation stability is high, and the helicitic texture's of being convenient for dismantlement and installation.
In one embodiment, the scanning device further includes an optical pen stylus, one end of the optical pen stylus is connected to the body, and the other end of the optical pen stylus can contact any point on the surface of the measured object, so as to obtain spatial position information of any point on the surface of the measured object.
So set up, when the spatial position information of certain point department on measured object surface need be acquireed, can be connected the adapter of light pen stylus and body and operate to acquire the spatial position information of this point department through the light pen stylus.
The application also provides a gap detection method, which is realized based on any one of the scanning devices, and the gap detection method comprises the following steps:
mounting an auxiliary measuring component on the body;
abutting the positioning piece against the surface of the measured object;
turning on the light projector and the camera;
rotating the scanning equipment to enable the camera to acquire the gap data of each azimuth angle;
and the camera sends the acquired gap data of each azimuth angle to external processing equipment for splicing processing to obtain complete gap data.
Compared with the prior art, the scanning equipment provided by the application has the advantages that through the matching of the at least two cameras and the at least one light projector, the scanning equipment has a scanning function and a gap detection function, and complex switching equipment is not needed during use; when the gap detection function is used, at least one light projector and at least one camera are started, the light projector can project light onto a detected gap to form a gap image, the gap image is collected through the at least one camera, and the gap image is sent to external processing equipment to be processed to obtain required gap data; when the scanning function is used, at least one light projector and at least two cameras are started, the light projector projects light onto a measured object, the binocular imaging principle is applied, diffuse reflection light of the light is collected through the at least two cameras, and data images collected by the at least two cameras are sent to external processing equipment for data image processing, so that three-dimensional data required by the measured object are obtained; the functions are complete and simple to switch, and scanning and gap detection are performed without fussy switching of equipment with a scanning function or equipment with a gap detection function; thereby saving time and greatly improving the working efficiency.
Drawings
Fig. 1 is a schematic structural diagram of a body of a scanning apparatus provided in the present invention.
Fig. 2 is a schematic structural diagram of a scanning apparatus in an embodiment of the present invention.
Fig. 3 is a schematic structural diagram of a scanning apparatus in another embodiment of the present invention.
Fig. 4 is a flowchart illustrating steps of a gap detection method according to the present invention.
Fig. 5 is a flowchart illustrating steps of a scanning method according to the present invention.
In the figure, 100, a scanning device; 10. a body; 11. a first camera; 12. a second camera; 13. a light projector; 20. an auxiliary measurement assembly; 21. a connecting member; 211. a first connection section; 212. a second connection section; 22. a positioning member; 221. a recess; 222. mounting grooves; 23. a rotating shaft; 24. a thread structure; 241. a threaded member; 242. a mating hole; 30. a gap; 40. a light pen stylus; 50. and marking points.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.
It will be understood that when an element is referred to as being "mounted on" another element, it can be directly mounted on the other element or intervening elements may also be present. When a component is referred to as being "disposed on" another component, it can be directly on the other component or intervening components may also be present. When an element is referred to as being "secured to" another element, it can be directly secured to the other element or intervening elements may also be present.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "or/and" includes any and all combinations of one or more of the associated listed items.
Referring to fig. 1 and 2, the present application provides a scanning apparatus 100, wherein the scanning apparatus 100 is one of the main measurement methods in the three-dimensional measurement field, and is applied to the industries of machinery, automobiles, aviation, medical treatment, sculptures, and the like.
However, when detecting the gap, a separate device, usually a surface difference analyzer, is required to detect the gap of the object to be detected; when a large-area object is scanned, the traditional scanner needs to be switched, and repeated switching is complex, so that the working efficiency is greatly reduced; in addition, when the surface difference analyzer is used for measurement, because the rotation measurement is performed around a certain point on the surface of the measured object, in the rotation process, due to unstable operation of the hand of a user, the rotation axis of the user may randomly change, so that a fixed fulcrum does not exist, a large error is generated in the measured value, and the measurement accuracy is reduced.
Referring to fig. 1, a scanning apparatus 100 provided by the present application includes a main body 10, at least two cameras 11 and at least one light projector 12, wherein the at least two cameras 11 and the at least one light projector 12 are respectively mounted on the main body 10, and the light projector 12 is used for projecting light onto a surface of an object to be measured; through the cooperation of at least two cameras 11 and at least one light projector 12, the scanning device 100 has a scanning function and a gap detection function, and does not need a complicated switching device during use.
When the gap detection function is used, at least one light projector 12 and at least one camera 11 are started, the light projector 12 can project light onto a gap 30 of a measured object to form a gap image, the gap image is collected through the at least one camera 11 and is sent to external processing equipment for image processing to obtain required gap data; when the scanning function is used, at least one light projector 12 and at least two cameras 11 are started, the light projector 12 projects light onto a measured object, diffuse reflection light of the light is collected by the at least two cameras 11 by using a binocular imaging principle, and data images collected by the diffuse reflection light are sent to external processing equipment for data image processing, so that three-dimensional data required by the measured object are obtained; the functions are complete and simple to switch, and scanning and gap detection are performed without fussy switching of equipment with a scanning function or equipment with a gap detection function; thereby saving time and greatly improving the working efficiency.
In the present application, the scanning apparatus 100 is provided with two cameras 11 and one light projector 12; of course, in other embodiments, the number of the cameras 11 and the light projectors 12 may be set differently according to different requirements, for example, the number of the cameras 11 is three, four, or five; the light projectors 12 are provided in two, three or four; the two cameras 11 are high-speed cameras, and the high-speed cameras are high in image stability, strong in transmission capability and strong in anti-interference capability; and the two cameras 11 are arranged in an angle; when being convenient for open scanning function, two cameras 11 can obtain the information of the different angles of testee from the different positions of testee according to two mesh formation of image principles to thereby integration difference forms the measurement data that the precision is high, efficient.
Also, in the present application, when the scanning apparatus 100 is used to detect a gap, the two cameras 11 are turned on to perform acquisition of gap data, so that the accuracy of the gap detection data can be improved.
Referring to fig. 2, the scanning device 100 further includes an auxiliary measuring assembly 20, one end of the auxiliary measuring assembly 20 is connected to the main body 10, and the other end of the auxiliary measuring assembly 20 can abut against the surface of the object to be measured, so as to assist the scanning device 100 to rotate relative to the gap 30 to be measured, so that the main body 10 rotates relative to the object to be measured through the auxiliary measuring assembly 20; the operation stability can be enhanced by the auxiliary measuring component 20, thereby improving the accuracy of the measured data; the problem that the rotation axis changes randomly due to unstable operation of a hand of a user in the rotation process, which causes errors in the measured analysis size, is avoided.
Further, supplementary measuring component 20 includes connecting piece 21 and setting element 22, setting element 22 supports and leans on in the testee surface, the one end and the body 10 of connecting piece 21 are connected, the other end is connected with setting element 22 with rotating, so that body 10 can rotate the testee relatively, when using, the user can hand body 10, press and be fixed in the testee surface with setting element 22, rotate body 10 around setting element 22 through connecting piece 21 again, can realize stable rotatory detection that carries on, easy operation in the testing process, and stability is strong.
Specifically, one side of the positioning element 22 is recessed inwards to form an arc-shaped concave part 221, two ends of the concave part 221 can be abutted against the surface of the object to be measured respectively, the other side of the positioning element 22 is provided with a mounting groove 222, and one end of the connecting element 21, which is far away from the body 10, is mounted in the mounting groove 222 through the rotating shaft 23; in the present application, the concave portion 221 of the positioning member 22 can abut against any position on the surface of the object to be measured to perform the overall detection of the gap 30; for example, as shown in fig. 2, two ends of the concave portion 221 of the positioning element 22 can respectively abut against two sides of the gap 30, and then the connecting element 21 is installed in the installation groove 222 of the positioning element 22 through the rotating shaft 23, so that a user can hold the body 10 by hand, and the gap 30 of the object to be measured can be measured in a convenient measurement manner that the body 10 rotates around the rotating shaft 23 on the positioning element 22 through the connecting element 21; when the device is used, a user holds the body 10 by hand, presses and fixes the positioning piece 22 on two sides of the gap 30 of the object to be measured, and then enables the body 10 to rotate around the positioning piece 22 by taking the rotating shaft 23 on the positioning piece 21 as an axis, so that stable data detection is carried out on the gap 30 of the object to be measured; of course, both ends of the concave portion 221 of the positioning member 22 can also abut against other positions on the surface of the object to be measured besides the above-mentioned positions, and then the main body 10 is rotated around the rotating shaft 23 on the positioning member 22 through the connecting member 21, so that the gap 30 to be measured is detected in rotation in other directions, and overall and accurate detection data of the gap 30 can be obtained.
Preferably, in this application, mounting groove 222 is the arc setting, and arc mounting groove 222 can increase the turned angle of connecting piece 21, makes body 10 can rotate bigger angle around the testee, is convenient for measure comprehensively.
Preferably, the rotating shaft 23 is a damping rotating shaft, and the damping rotating shaft has a simple structure and a long service life.
With reference to fig. 2, the connecting member 21 includes a first connecting section 211 and a second connecting section 212 connected to each other, the first connecting section 211 and the second connecting section 212 are disposed at an angle, and the first connecting section 211 is at least partially attached to the surface of the main body 10 and detachably connected to the main body 10, the first connecting section 211 can be adapted to the shape of the main body 10 to support the main body 10, so that a side surface of the main body 10 having the light projector 12 can be parallel to the object to be measured; the second connection section 212 is connected to the positioning member 22 far from the first connection section 211 in a rotatable manner, and the second connection section 212 is perpendicular to the object to be measured through the installation groove 222 extending into the positioning member 22, so that the body 10 can vertically project the laser beam on the surface of the object to be measured, and the accuracy of data in the measurement process is improved.
Furthermore, the connecting piece 21 is detachably connected with the body 10 through a thread structure 24 or a buckle structure, the thread structure 24 and the buckle structure are simple in structure and convenient for the detachment and installation of the auxiliary measuring component 20, and the auxiliary measuring component 20 can be detached without being required when a scanning function is used; when using the gap to detect the function, need auxiliary measuring component 20 to improve and detect stability and precision, can install it on body 10, body 10 and auxiliary measuring component 20 are equivalent to a whole this moment, are convenient for measure the testee to improve the accuracy of measurement stability and measured value.
Specifically, in this application, be connected through helicitic texture 24 between connecting piece 21 and the body 10, helicitic texture 24 includes screw 241, and mating holes 242 has been seted up to the one end that connecting piece 21 kept away from setting element 22, and screw 241 wears to locate mating holes 242 to with body 10 threaded connection, so installation stability is high, and the dismantlement and the installation of the helicitic texture 24 of just being convenient for.
Referring to fig. 3, the scanning device 100 further includes a light pen stylus 40, when it is required to obtain spatial position information of a certain point on the surface of the object to be measured, the light pen stylus 40 needs to be connected to an adapter (not shown) of the body 10 for operation, a plurality of identifiable mark points 50 are adhered to the surface of the object to be measured or the surrounding environment, the two cameras 11 reconstruct a first three-dimensional coordinate of the mark points 50 through binocular imaging of the identified mark points 50, measure a second three-dimensional coordinate of the mark points 50 with the light pen stylus 40, and calibrate the body 10 and the light pen stylus 40 of the scanning device 100 through the measured first three-dimensional coordinate and the measured second three-dimensional coordinate, so as to obtain a conversion relationship therebetween. When the optical pen stylus 40 is used for testing the coordinates of the required key point, the optical pen stylus 40 is kept still at the key point, the optical pen stylus 40 is rotated from multiple directions, the three-dimensional coordinates of the optical pen stylus 40 at the key point are fitted, and the coordinates are converted into the coordinate system of the body 10 of the scanning device 100, so that the spatial position information of the required key point is obtained.
The scanning device 100 provided by the present application includes a gap detection function and a scanning function, the gap detection function uses the gap detection method S1, the scanning function uses the scanning method S2, and S1 and S2 are both implemented based on the above scanning device 100; it should be explained that the gap detection function and the scanning function are two independent functions, which are not related to each other, and the gap detection function and the scanning function can be used independently.
As shown in fig. 4, fig. 4 is a flowchart of steps of a gap detection method S1 provided by the present application, where the gap detection method S1 includes the following steps:
step S11, mounting the auxiliary measuring unit 20 on the main body 10;
step S12, the positioning piece 22 is abutted against the surface of the measured object;
step S13, turning on the light projector 12 and the camera 11;
step S14, rotating the scanning apparatus 100 to make the camera 11 acquire slit data of each azimuth angle;
in step S15, the camera 11 sends the acquired slit data of each azimuth angle to an external processing device for stitching processing, so as to obtain complete slit data.
Specifically, in step S11, the auxiliary measuring assembly 20 includes the connecting element 21 and the positioning element 22, and the position relationship, the connection relationship, the specific structure, and the like of the connecting element 21 and the positioning element 22 are the same as those described above, and will not be described herein again. In step S12, the positioning element 22 is usually abutted against the gap 30 on the surface of the object to be measured, but may be abutted against other positions to achieve the desired overall monitoring of the gap data. In step S14, the user can hold the main body 10 by hand and rotate the main body 10 via the connecting member 21 around the rotating shaft 23, thereby moving the scanning device 100 to determine the local information of the gap 30; this may be done multiple times until the complete slot data information for each azimuthal angle of the slot 30 is obtained. In step S15, the camera 11 acquires information by capturing the slit outline of the surface of the object to be measured, which is displayed by the light projector 12, and transmits the acquired slit image information to the data processing device, and the data processing device performs stitching image processing on the acquired slit image information, acquires the three-dimensional space coordinates of the slit 30 according to the result of the image processing, and generates a spatial three-dimensional reconstruction model of the slit 30 to find the width and the plane difference value of the slit 30.
Further, as shown in fig. 5, fig. 5 is a flowchart illustrating steps of a scanning method S2 provided by the present application, where the scanning method S2 includes the following steps:
step S21, turning on the light projector 12;
step S22, turning on the camera 11;
in step S23, the camera 11 receives the diffuse reflection light projected to the surface of the object to be measured by the light projector 12 to obtain information of the object to be measured and sends the information to the data processing device for arithmetic processing.
Specifically, in step S23, the light projector 12 irradiates light onto the surface of the object to be measured, the camera 11 can receive the diffuse reflection light of the light, and the camera 11 is configured to apply the binocular vision imaging principle, that is, the camera 11 can obtain two images of the object to be measured from different positions, obtain a digital image and detect object texture information, so as to send the digital image to the data processing device for calculation processing to obtain three-dimensional space coordinates, thereby obtaining an actual object model.
The features of the above embodiments may be arbitrarily combined, and for the sake of brevity, all possible combinations of the features in the above embodiments are not described, but should be construed as being within the scope of the present specification as long as there is no contradiction between the combinations of the features.
It should be understood by those skilled in the art that the above embodiments are only for illustrating the present invention and are not to be used as a limitation of the present invention, and that suitable changes and modifications of the above embodiments are within the scope of the claimed invention as long as they are within the spirit and scope of the present invention.
Claims (11)
1. A scanning device comprises a body, at least two cameras and at least one light projector, wherein the at least two cameras and the at least one light projector are respectively arranged on the body, and the at least one light projector is used for projecting laser lines;
when the scanning device is used for detecting gaps, at least one camera is used for collecting gap data; when the scanning device is used for scanning, at least two cameras are used for acquiring data of a measured object.
2. The scanning device of claim 1, wherein when the scanning device is used for detecting a gap, two of the cameras are turned on for gap data acquisition.
3. The scanning device of claim 1, further comprising an auxiliary measuring assembly, one end of the auxiliary measuring assembly being connected to the body for assisting the scanning device in rotating relative to the gap to be measured.
4. The scanning device as claimed in claim 3, wherein the auxiliary measuring assembly includes a connecting member and a positioning member, the positioning member abuts against the surface of the object to be measured, one end of the connecting member is connected to the body, and the other end of the connecting member is rotatably connected to the positioning member to assist the body to rotate relative to the gap to be measured.
5. The scanning device according to claim 4, wherein one side of the positioning member is recessed to form an arc-shaped recess, and two ends of the recess can abut against the surface of the object to be measured respectively; the mounting groove has been seted up to the opposite side of setting element, the connecting piece is kept away from the one end of body install through the pivot in the mounting groove.
6. A scanning device according to claim 5, wherein the spindle is a damped spindle.
7. The scanning device as claimed in claim 4, wherein the connecting member comprises a first connecting section and a second connecting section which are connected with each other, the first connecting section and the second connecting section are arranged at an angle, and the first connecting section is at least partially attached to the surface of the body and detachably connected with the body; the second connecting section is far away from the first connecting section and is connected with the positioning piece in a rotating mode.
8. The scanning device according to claim 4, wherein the connecting member is detachably connected to the body by a screw structure or a snap structure.
9. The scanning device as claimed in claim 8, wherein the threaded structure includes a threaded member, a fitting hole is opened at an end of the connecting member away from the positioning member, and the threaded member is inserted into the fitting hole and is threaded with the body.
10. The scanning device according to claim 1, further comprising a light pen stylus, wherein one end of the light pen stylus is connected to the body, and the other end of the light pen stylus can contact and lean against any point on the surface of the measured object, so as to obtain spatial position information of any point on the surface of the measured object.
11. A gap detection method implemented on the basis of the scanning device according to any one of claims 1 to 9, the gap detection method comprising the steps of:
mounting an auxiliary measuring component on the body;
abutting the positioning piece on the surface of the measured object;
turning on the light projector and the camera;
rotating the scanning equipment to enable the camera to acquire the gap data of each azimuth angle;
and the camera sends the acquired gap data of each azimuth angle to external processing equipment for splicing processing to obtain complete gap data.
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| CN202110079114.XA CN112857261A (en) | 2021-01-21 | 2021-01-21 | Scanning device and gap detection method thereof |
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| CN202110079114.XA CN112857261A (en) | 2021-01-21 | 2021-01-21 | Scanning device and gap detection method thereof |
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| CN (1) | CN112857261A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5129010A (en) * | 1989-12-15 | 1992-07-07 | Kabushiki Kaisha Toyoto Chuo Kenkyusho | System for measuring shapes and dimensions of gaps and flushnesses on three dimensional surfaces of objects |
| US20030160970A1 (en) * | 2002-01-30 | 2003-08-28 | Anup Basu | Method and apparatus for high resolution 3D scanning |
| US20100134598A1 (en) * | 2005-03-11 | 2010-06-03 | St-Pierre Eric | Hand-held self-referenced apparatus for three-dimensional scanning |
| CN104897091A (en) * | 2014-03-07 | 2015-09-09 | 赫克斯冈技术中心 | Articulated arm coordinate measuring machine |
| US20160313114A1 (en) * | 2015-04-24 | 2016-10-27 | Faro Technologies, Inc. | Two-camera triangulation scanner with detachable coupling mechanism |
| CN214149177U (en) * | 2021-01-21 | 2021-09-07 | 杭州思锐迪科技有限公司 | Scanning device |
-
2021
- 2021-01-21 CN CN202110079114.XA patent/CN112857261A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5129010A (en) * | 1989-12-15 | 1992-07-07 | Kabushiki Kaisha Toyoto Chuo Kenkyusho | System for measuring shapes and dimensions of gaps and flushnesses on three dimensional surfaces of objects |
| US20030160970A1 (en) * | 2002-01-30 | 2003-08-28 | Anup Basu | Method and apparatus for high resolution 3D scanning |
| US20100134598A1 (en) * | 2005-03-11 | 2010-06-03 | St-Pierre Eric | Hand-held self-referenced apparatus for three-dimensional scanning |
| CN104897091A (en) * | 2014-03-07 | 2015-09-09 | 赫克斯冈技术中心 | Articulated arm coordinate measuring machine |
| US20160313114A1 (en) * | 2015-04-24 | 2016-10-27 | Faro Technologies, Inc. | Two-camera triangulation scanner with detachable coupling mechanism |
| CN214149177U (en) * | 2021-01-21 | 2021-09-07 | 杭州思锐迪科技有限公司 | Scanning device |
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