CN110595386A - Supplementary light filling device of annular and three-dimensional scanner - Google Patents
Supplementary light filling device of annular and three-dimensional scanner Download PDFInfo
- Publication number
- CN110595386A CN110595386A CN201910969866.6A CN201910969866A CN110595386A CN 110595386 A CN110595386 A CN 110595386A CN 201910969866 A CN201910969866 A CN 201910969866A CN 110595386 A CN110595386 A CN 110595386A
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- controller
- light
- dimensional scanner
- driving
- annular auxiliary
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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
- G01B11/2433—Measuring arrangements characterised by the use of optical techniques for measuring contours or curvatures for measuring outlines by shadow casting
Abstract
The invention provides an annular auxiliary light supplementing device which comprises a driving rotating unit, a rotating part, a light supplementing lamp, a photosensitive component and a controller, wherein the driving rotating unit is used for driving the rotating part to rotate; the output end of the driving rotating unit is fixed on the object placing table; the rotating part is sleeved on an output shaft of the driving rotating unit; the light supplement lamp is arranged on the rotating part; the photosensitive component detects and transmits an ambient light intensity signal to the controller, and the controller adjusts the brightness of the light supplement lamp. The invention can realize automatic compensation of the ambient light intensity, so that the structural light intensity containing modulation information acquired by the camera is uniform, and the exposure range of the camera is reasonable. The invention also provides a three-dimensional scanner.
Description
Technical Field
The invention belongs to the field of additive manufacturing, and particularly relates to an annular auxiliary light supplementing device and a three-dimensional scanner.
Background
With the rapid development of three-dimensional scanning technology, the kinds of objects to be scanned are spread throughout various industries. The object to be scanned comprises low-precision products in daily necessities and high-precision products such as aviation engine blades.
However, during the scanning operation of these products of different grades, the problems of surface rotting and data loss occur. The most important factors causing data loss and rotten surfaces are that the light intensity of the structured light is unstable, and the field of view of the camera is blocked. Therefore, how to solve the problems of unstable surface light intensity of the object and the blocked camera view field becomes an urgent technical problem to be solved by the technical personnel in the field.
Disclosure of Invention
The invention aims to provide an annular auxiliary light supplementing device and a three-dimensional scanner, which can automatically compensate the ambient light intensity, so that the structural light intensity containing modulation information acquired by a camera is uniform, and the exposure range of the camera is reasonable. In order to achieve the purpose, the invention adopts the following technical scheme:
the invention provides an annular auxiliary light supplementing device which comprises a driving rotating unit, a rotating part, a light supplementing lamp, a photosensitive component and a controller, wherein the driving rotating unit is used for driving the rotating part to rotate;
the output end of the driving rotating unit is fixed with the object placing table;
the rotating part is sleeved on an output shaft of the driving rotating unit;
the light supplement lamp is arranged on the rotating part;
the photosensitive component detects and transmits an ambient light intensity signal to the controller, and the controller adjusts the brightness of the light supplement lamp.
Preferably, the driving rotation unit is a driving motor.
Preferably, the rotating part is a swivel.
Preferably, the photosensitive component is a photosensitive detection sensor.
Preferably, the supplementary lighting lamp is an LED lamp.
The invention also provides a three-dimensional scanner which comprises the annular auxiliary light supplementing device, a projector, a CCD camera, an object placing table, a position detection device and a shell;
the projector, the CCD camera, the object placing table and the position detection device are all arranged in the shell;
the projector, the CCD camera and the position detection device are all in signal connection with the controller.
Preferably, further comprising a pair of transfer members; the conveying component is rotatably arranged on the inner wall of the shell; one of the conveying members rotates to drive the position detection device to translate along the X direction; the other conveying component drives the object placing table to horizontally translate.
Preferably, the transfer member includes a stepping motor and a ball screw pair; the stepping motor drives the ball screw pair to rotate.
Preferably, the ball screw assembly comprises a screw and a nut engaged with the screw.
Compared with the prior art, the invention has the advantages that: the all-round light filling to ambient light intensity has been realized, has solved because of the fluctuation of ambient light intensity scope is too big, appears overexposure, has between scanned object and the projecting apparatus and has shelter from the problem of the rotten face that produces.
Drawings
Fig. 1 is a schematic structural diagram of an annular auxiliary light supplement device according to an embodiment of the present invention;
FIG. 2 is a schematic structural diagram of a three-dimensional scanner according to an embodiment of the present invention;
fig. 3 is a flow chart of the operation of the three-dimensional scanner of fig. 2.
The system comprises an output shaft 1, a light supplementing lamp 2, a rotating part 3, a motor 4, a driving rotating unit 5, a photosensitive component 6, a storage table 7, a projector 8, a camera 9, a ball screw 10, a position detection device 11 and a stepping motor 12.
Detailed Description
The annular auxiliary light supplement device and the three-dimensional scanner of the present invention will be described in more detail with reference to the schematic drawings, wherein preferred embodiments of the present invention are shown, and it is understood that those skilled in the art can modify the present invention described herein while still achieving the advantageous effects of the present invention. Accordingly, the following description should be construed as broadly as possible to those skilled in the art and not as limiting the invention.
As shown in fig. 1, an annular auxiliary light supplement device includes a driving rotation unit 5, a rotation part 3, a light supplement lamp 2, a photosensitive device 6, and a controller; the output end of the driving rotating unit 5 fixes the object placing table 7 to drive the object placing table 7 to rotate; the rotating part 3 is sleeved on the output shaft 1 of the driving rotating unit 5; namely, the rotating part 3 is sleeved on the driving rotating unit 5, and the light supplement lamp 2 is arranged on the rotating part 3; sensitization components and parts 6 detects and transmits environment light intensity signal to controller, the controller is according to the change of external light illumination, the luminance of automatically regulated light filling lamp 2, so that to ambient light compensation, the structure light intensity that contains modulation information that makes camera 9 gather is even, camera 9 exposure scope is reasonable, thereby prevent that the rotten face from appearing in the scanning data, solve the problem that the weak light that the surface of a back light reflection was come and is abandoned by CCD camera 9 and lead to reconstruction information to lose, solve because of there is the rotten face problem that shelters from the thing and produce by scanning object and projecting apparatus 8 within a definite time.
In the present embodiment, the driving rotation unit 5 is a driving motor. The inside 4 of the motor of the driving motor and the output shaft 1 of the driving motor, the inside 4 of the motor is a rotor of the motor, when power is supplied, the rotor drives the annular light supplementing device to rotate, and the output shaft 1 is an output shaft of the object placing table 7 in fig. 2.
In the present embodiment, the rotating portion 3 is a swivel.
In this embodiment, photosensitive component 6 is a photosensitive sensor, and photosensitive sensor sets for the light intensity threshold value, and photosensitive sensor detects the light intensity and changes in figure 1 when ambient light changes, adjusts the luminance of LED light filling lamp through the controller, makes every frame picture light intensity that the inside CCD camera of casing gathered keep the same to the influence of ambient light to three-dimensional scanner scanning has been eliminated.
In the present embodiment, the fill light 2 is an LED lamp.
As shown in fig. 2, the present embodiment further provides a three-dimensional scanner, which includes an annular auxiliary light supplement device, a projector 8, a CCD camera 9, a placement platform 7, a position detection device 11, and a housing; the projector 8, the CCD camera 9, the object placing table 7 and the position detection device 11 are all arranged in the shell; the projector 8, the CCD camera 9 and the position detection device 11 are all in signal connection with the controller. The position detection device 11 is used for accurately measuring distance parameters between the camera 9, the projector 8 and the object, so that the external parameter implementation value of the camera 9 is obtained; the projector 8 is used for projecting grating light to irradiate on the surface of the measured object.
In the present embodiment, a pair of conveying members are further provided to regulate the positions of the position detecting device 11 and the stage 7. The conveying member is matched with the annular auxiliary light supplementing device for use, and the omnibearing light supplementing to the measured object is achieved.
Specifically, the conveying component is rotatably arranged on the inner wall of the shell; one of the conveying members rotates to drive the position detection device 11 to translate along the X direction; the other conveying member rotates to drive the driving rotating unit 5 to translate along the Y direction, namely the other conveying member drives the object placing table 7 to translate horizontally. Specifically, the transmission member includes a stepping motor 12 and a ball screw 10 pair; the stepping motor 12 drives the ball screw 10 to rotate. The ball screw 10 pair includes a screw and a nut engaged with the screw.
As shown in fig. 3, the scanning flow of the three-dimensional scanner is as follows: the object is placed on the object placing table 7, the PC end generates a projection grating, the projection grating is projected to the projector 8 through data transmission, then calibration is carried out, the calibration plate is placed, the grating is projected to the calibration plate, the camera 9 collects image information and transmits the image information to the PC end, the camera calibration is completed through a conversion algorithm of a space coordinate system, the controller starts the annular auxiliary light supplementing device at the moment, the camera 9 collects pictures, and finally the PC end obtains point cloud data of the three-dimensional profile of the object through a four-step phase shift algorithm.
In summary, in the annular auxiliary light supplement device and the three-dimensional scanner provided in the embodiments of the present invention, the light supplement to the ambient light intensity in all directions is implemented, and the problems of excessive exposure and a rotten surface caused by a shielding object between the scanned object and the projector 8 due to too large fluctuation of the ambient light intensity range are solved.
The above description is only a preferred embodiment of the present invention, and does not limit the present invention in any way. It will be understood by those skilled in the art that various changes, substitutions and alterations can be made herein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (9)
1. An annular auxiliary light supplementing device is characterized by comprising a driving rotating unit, a rotating part, a light supplementing lamp, a photosensitive component and a controller;
the output end of the driving rotating unit is fixed with the object placing table;
the rotating part is sleeved on an output shaft of the driving rotating unit;
the light supplement lamp is arranged on the rotating part;
the photosensitive component detects and transmits an ambient light intensity signal to the controller, and the controller adjusts the brightness of the light supplement lamp.
2. The annular auxiliary light supplementing device of claim 1, wherein the driving rotation unit is a driving motor.
3. The annular auxiliary light supplement device of claim 1, wherein the rotating portion is a swivel.
4. The annular auxiliary light supplementing device according to claim 1, wherein the light sensing component is a light sensing detection sensor.
5. The annular auxiliary light supplement device of claim 1, wherein the light supplement lamp is an LED lamp.
6. A three-dimensional scanner comprises the annular auxiliary light supplementing device of any one of claims 1 to 5, and is characterized by further comprising a projector, a CCD camera, a storage table, a position detection device and a casing;
the projector, the CCD camera, the object placing table and the position detection device are all arranged in the shell;
the projector, the CCD camera and the position detection device are all in signal connection with the controller.
7. The three-dimensional scanner of claim 5, further comprising a pair of transport members; the transfer member is mounted on an inner wall of the housing; one of the conveying members drives the position detection device to translate along the X direction; the other conveying component drives the object placing table to horizontally translate.
8. The three-dimensional scanner according to claim 7, wherein the transport member comprises a stepper motor and a ball screw assembly; the stepping motor drives the ball screw pair to rotate.
9. The three-dimensional scanner according to claim 8, wherein said ball screw assembly comprises a screw and a nut engaged with said screw.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910969866.6A CN110595386A (en) | 2019-10-12 | 2019-10-12 | Supplementary light filling device of annular and three-dimensional scanner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910969866.6A CN110595386A (en) | 2019-10-12 | 2019-10-12 | Supplementary light filling device of annular and three-dimensional scanner |
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| Publication Number | Publication Date |
|---|---|
| CN110595386A true CN110595386A (en) | 2019-12-20 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910969866.6A Pending CN110595386A (en) | 2019-10-12 | 2019-10-12 | Supplementary light filling device of annular and three-dimensional scanner |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20090021750A1 (en) * | 2006-02-08 | 2009-01-22 | Christian Kohler | Method and Arrangement for a Rapid and Robust Chromatic Confocal 3D Measurement Technique |
| CN205233628U (en) * | 2015-12-16 | 2016-05-18 | 师汉民 | Flat spatial digitizer |
| CN106091989A (en) * | 2016-07-29 | 2016-11-09 | 浙江迅实科技有限公司 | A kind of desk top scanning with hand mechanism |
| CN208026224U (en) * | 2018-03-10 | 2018-10-30 | 深圳市博智鸿实业有限责任公司 | A kind of annular omnidirectional three-dimensional scanner |
| CN209432075U (en) * | 2019-03-21 | 2019-09-24 | 螳螂慧视科技有限公司 | A kind of high-precision three-dimensional modelling apparatus |
-
2019
- 2019-10-12 CN CN201910969866.6A patent/CN110595386A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20090021750A1 (en) * | 2006-02-08 | 2009-01-22 | Christian Kohler | Method and Arrangement for a Rapid and Robust Chromatic Confocal 3D Measurement Technique |
| CN205233628U (en) * | 2015-12-16 | 2016-05-18 | 师汉民 | Flat spatial digitizer |
| CN106091989A (en) * | 2016-07-29 | 2016-11-09 | 浙江迅实科技有限公司 | A kind of desk top scanning with hand mechanism |
| CN208026224U (en) * | 2018-03-10 | 2018-10-30 | 深圳市博智鸿实业有限责任公司 | A kind of annular omnidirectional three-dimensional scanner |
| CN209432075U (en) * | 2019-03-21 | 2019-09-24 | 螳螂慧视科技有限公司 | A kind of high-precision three-dimensional modelling apparatus |
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Application publication date: 20191220 |