CN106840251A - A kind of 3 D scanning system for the detection of low-voltage current mutual inductor outward appearance - Google Patents
A kind of 3 D scanning system for the detection of low-voltage current mutual inductor outward appearance Download PDFInfo
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- CN106840251A CN106840251A CN201510889116.XA CN201510889116A CN106840251A CN 106840251 A CN106840251 A CN 106840251A CN 201510889116 A CN201510889116 A CN 201510889116A CN 106840251 A CN106840251 A CN 106840251A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D21/00—Measuring or testing not otherwise provided for
- G01D21/02—Measuring two or more variables by means not covered by a single other subclass
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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
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- Length Measuring Devices By Optical Means (AREA)
- Measuring Instrument Details And Bridges, And Automatic Balancing Devices (AREA)
Abstract
The present invention provides a kind of 3 D scanning system for the detection of low-voltage current mutual inductor outward appearance, and the system includes：Low-voltage current mutual inductor installs module：For installing low-voltage current mutual inductor to be measured, and control the translation and rotation of the low-voltage current mutual inductor to be measured；Grating transmitter module：For to the low-voltage current mutual inductor projection grating to be measured；Image capture module：For gathering the low-voltage current mutual inductor image to be measured after being processed through grating, and the image information that will be collected is sent to data processing module；Data processing module：The image information that parsing image capture module sends, and the three-dimensional image information of the image information after parsing and standard low pressure current transformer is carried out into comparing calculation, draw the detection error of low-voltage current mutual inductor to be measured.The technical scheme that the present invention is provided can realize the full-automatic accurate measurement of low-voltage current mutual inductor apparent size to be measured and its error, and measurement result is more accurate, reliable, and speed is faster.
Description
Technical field
The present invention relates to a kind of 3 D scanning system, in particular to a kind of three-dimensional for the detection of low-voltage current mutual inductor outward appearance is swept
Retouch system.
Background technology
With extensive use of the transformer in power system, using the apparent size of three-dimensional measurement commercial measurement transformer, into
To realize that laboratory gauge check is intelligent, automate, refine indispensable means.The development of modern industry especially with
Numerical DC speed proposes requirement higher to Technology of Precision Measurement for the fast development of the advanced manufacturing technology of core.Accurate measurement skill
On the one hand art will shoulder the important task of technical quality guarantee for advanced manufacturing technology, on the other hand be the raising of production benefit
Contribute share.
The 3 D scanning system that prior art is related to fails to realize the high-acruracy survey of reflectorized material, and blue white light is freely cut
Change, fail integrated flow-line equipment and realize automation, and the measurement of sequencing 3-D scanning is not carried out specifically designed for transformer
, there is certain defect to detection transformer outward appearance and scale error in device.Therefore, design a kind of for low-voltage current mutual inductor
The 3 D scanning system of outward appearance detection has to the aspect such as accuracy of measurement and detection speed for improving the detection of low-voltage current mutual inductor outward appearance
It is significant.
The content of the invention
In order to solve the above mentioned problem in the presence of prior art, the present invention provides a kind of for the detection of low-voltage current mutual inductor outward appearance
3 D scanning system, the invention is applied to visual examination and the size scanning of transformer, can meet national standard Q/GDW 572
—2010《Low-voltage current mutual inductor technical specification is used in metering》Requirement：Artificial operational measure low-tension current can be efficiently solved mutual
During sensor apparent size, the measurement efficiency caused by the influence of environmental condition and human error is low, and Measurement reliability is poor, measurement
Uncertain big the problems such as.
The present invention provide technical scheme be：A kind of 3 D scanning system for the detection of low-voltage current mutual inductor outward appearance, its improvement
Part is：The system includes：
Low-voltage current mutual inductor installs module：For installing low-voltage current mutual inductor to be measured, and control the low-tension current to be measured mutual
The translation and rotation of sensor；
Grating transmitter module：For to the low-voltage current mutual inductor projection grating to be measured；
Image capture module：For gathering the low-voltage current mutual inductor image to be measured after being processed through grating, and the image that will be collected
Information is sent to data processing module；
Data processing module：The image information that parsing image capture module sends, and by the image information and standard low pressure after parsing
The three-dimensional image information of current transformer carries out comparing calculation, draws the detection error of low-voltage current mutual inductor to be measured.
Preferably, the low-voltage current mutual inductor is installed module and is included：
Motion control case：Connect electronic control translation stage and electronically controlled rotary table respectively by holding wire, and control the translation of electronic control translation stage
With the rotation of electronically controlled rotary table；
Electronic control translation stage：On line slideway, and do straight on the line slideway under the control of the motion control case
Line is moved；
Electronically controlled rotary table：It is arranged on the electronic control translation stage, is moved along a straight line with the electronic control translation stage, while in the fortune
Three-dimensional rotating is done under the control of dynamic control cabinet；
Shock insulation platform：It is fixed in the electronically controlled rotary table, is moved with the electronically controlled rotary table, for installing low-tension current to be measured
Transformer, and vibrations to surrounding environment and low-voltage current mutual inductor to be measured shield.
Preferably, the grating transmitter module first projects the light that one group of light intensity is distributed in dextrorotation to the low-voltage current mutual inductor to be measured
Grid image；Then again to described low-voltage current mutual inductor projection three coloured images of red, green, blue to be measured.
Further, the grating transmitter module is made up of DLP projector；The DLP projector is arranged on image capture module
In same machine box；The machine box is placed in low-voltage current mutual inductor front to be measured, and is connected with data processing module；The DLP throws
Shadow instrument can be to the low-voltage current mutual inductor projection grating image to be measured and coloured image under the control of the data processing module.
Further, when the grating transmitter module is to the low-voltage current mutual inductor projection raster image to be measured, described image collection
The raster image deformed through the low-voltage current mutual inductor modulation to be measured in module synchronization collection reference planes, and utilize the light
Grid image obtains the three-dimensional coordinate data on the low-voltage current mutual inductor surface to be measured by phase calculation and three-dimensional reconstruction, then by institute
State three-dimensional coordinate data and be transferred to data processing module；
When the grating transmitter module is to low-voltage current mutual inductor projection three coloured images of red, green, blue to be measured, the figure
The low-voltage current mutual inductor to be measured is under three coloured images irradiations of red, green, blue in picture acquisition module synchronous acquisition reference planes
Image information, and synthesize the color texture data of the low-voltage current mutual inductor to be measured according to described image information, then will be described
Color texture data are transferred to data processing module.
Preferably, described image acquisition module is made up of binocular camera, and the binocular camera is respectively arranged on grating including two
The camera of transmitter module both sides；Two cameras are using hardware synchronization mechanism from different angles to low-voltage current mutual inductor to be measured
Shot, to obtain two width digital image informations of the low-voltage current mutual inductor to be measured, and the two width digital picture is believed
Breath is uploaded to data processing module by holding wire, and every width digital image information includes three-dimensional coordinate data and color texture data.
Further, the camera front adds changeable optical filter, with the different materials according to low-voltage current mutual inductor to be measured
Material characteristic realizes the free switching of blue white light source：When measurement has the low-voltage current mutual inductor to be measured of stronger reflective material, make
Measured with blue light, only allow the blue light of specific wavelength to pass through by installing optical filter, to reduce the interference of ambient light；When measurement has
During the low-voltage current mutual inductor to be measured of other materials characteristic, optical filter is cut off, measured using white light.
Preferably, the data processing module includes data resolution module and error calculating module；The data resolution module is received
The digital image information that described image processing module is uploaded, and the digital image information is parsed, to obtain low pressure to be measured
The apparent size of current transformer；Apparent size and storage of the error calculating module according to the low-voltage current mutual inductor to be measured
The apparent size of the standard low pressure current transformer in the error calculating module, calculates the low-voltage current mutual inductor to be measured
Apparent size error.
Further, the data processing module is made up of computer；The computer passes through USB interface and holding wire and DLP respectively
Projecting apparatus is connected with binocular camera, for controlling the image projection of DLP projector and locating the number that reason binocular camera is photographed
Word image information, to obtain the apparent size data and error of low-voltage current mutual inductor to be measured.
Further, the reference planes and DLP projector are located at the low-voltage current mutual inductor both sides to be measured respectively；Binocular camera shooting
The optical focus line of machine and DLP projector is parallel with the reference planes；The binocular camera focuses on the reference planes
On；The shooting area of the binocular camera is equal to the projected area of the DLP projector.
Compared with immediate prior art, the present invention has following marked improvement：
1. it is of the invention it is a kind of for low-voltage current mutual inductor outward appearance detection 3 D scanning system, by DLP projector to be measured
Low-voltage current mutual inductor launches grating, and the digital image information of low-voltage current mutual inductor to be measured is gathered by binocular camera, passes through
The digital image information of computer analyzing low-voltage current mutual inductor to be measured, be capable of achieving low-voltage current mutual inductor apparent size to be measured and its
The full-automatic accurate measurement of error, measured parameter data is more accurate, reliable, and measuring speed faster, is efficiently solved artificial
The poor reliability that influenced by environmental conditions and human error is caused during measurement low-voltage current mutual inductor apparent size, measurement is not
The big problem of certainty；
2. 3 D scanning system of the invention installs module and installs low-voltage current mutual inductor to be measured using low-voltage current mutual inductor so that
Low-voltage current mutual inductor to be measured can arbitrarily overturn and move during scanned, therefore can be based on multiple visual angles to low pressure to be measured
Current transformer is measured, and automatic Mosaic is carried out by system for computer software, is capable of achieving 360 ° of low-voltage current mutual inductor
High-acruracy survey.
3. be arranged on low-voltage current mutual inductor on moveable electronic control translation stage by 3 D scanning system of the invention, can be directly realized by
The running of integrated streamline, simple to operate, practical, convenient disassembly is low to measuring environment requirement, and system design is compact,
It is easily portable, there is practical significance for low-voltage current mutual inductor visual examination engineering application.
4. 3 D scanning system of the invention has installed changeable optical filter additional in front of camera, can be according to low-tension current to be measured
The unlike material of transformer selects different light sources to measure, and can suppress the interference of ambient light, improves the reliability of gathered data.
Brief description of the drawings
The hardware block diagram of the 3 D scanning system that Fig. 1 is provided for the present invention.
Fig. 2 is the location diagram of grating transmitter module, image capture module, low-voltage current mutual inductor to be measured and reference planes.
Wherein 1- projects grating；The camera of 2- binocular cameras；3- low-voltage current mutual inductors to be measured；4- reference planes.
Specific embodiment
Specific embodiment of the invention is described in further detail below in conjunction with the accompanying drawings.
In order to thoroughly understand the embodiment of the present invention, detailed structure will be proposed in following description.Obviously, the embodiment of the present invention
Execution be not limited to the specific details that those skilled in the art is familiar with.Presently preferred embodiments of the present invention is described in detail as follows,
But in addition to these detailed descriptions, the present invention can also have other embodiment.
The present invention provides a kind of 3 D scanning system for the detection of low-voltage current mutual inductor outward appearance, its overall structure block diagram such as Fig. 1
It is shown.The system includes：
Low-voltage current mutual inductor installs module：For installing low-voltage current mutual inductor to be measured, and control the low-tension current to be measured mutual
The translation and rotation of sensor；
Grating transmitter module：For to the low-voltage current mutual inductor projection grating to be measured；The grating of projection and low-tension current to be measured
Projected after transformer Surface Interference on the reference plane, be easy to image capture module to gather；
Image capture module：For gathering the low-voltage current mutual inductor image to be measured after being processed through grating, and the image that will be collected
Information is sent to data processing module；
Data processing module：The image information that parsing image capture module sends, and by the image information and standard low pressure after parsing
The three-dimensional image information of current transformer carries out comparing calculation, draws the detection error of low-voltage current mutual inductor to be measured.
The low-voltage current mutual inductor installs module to be included：
Motion control case：Connect electronic control translation stage and electronically controlled rotary table respectively by holding wire, and control the translation of electronic control translation stage
With the rotation of electronically controlled rotary table；
Electronic control translation stage：On line slideway, and do straight on the line slideway under the control of the motion control case
Line is moved；
Electronically controlled rotary table：It is arranged on the electronic control translation stage, is moved along a straight line with the electronic control translation stage, while in the fortune
Three-dimensional rotating is done under the control of dynamic control cabinet；
Shock insulation platform：It is fixed in the electronically controlled rotary table, is moved with the electronically controlled rotary table, for installing low-tension current to be measured
Transformer, and vibrations to surrounding environment and low-voltage current mutual inductor to be measured shield.
Wherein the Themaincontroller of motion control case is PLC, and low-tension current mutual inductance to be measured is controlled by PLC
The translation and rotation of device, are based on multiple visual angles and low-voltage current mutual inductor to be measured are entered by data processing module control image capture module
Row IMAQ, then automatic Mosaic is carried out by the systems soft ware of data processing module, so as to realize low-voltage current mutual inductor to be measured
360 ° of high-acruracy surveys.
The integrated pipeline system outward appearance detection of low-voltage current mutual inductor to be measured, single low tension to be measured can be realized using electronic control translation stage
After current transformer is scanned, data parsing is carried out by data processing module；Then proceed to the next low-tension current to be measured of scanning mutual
Sensor, and it is loaded into new DID again to data processing module, realize that low-voltage current mutual inductor outward appearance to be measured is examined with this
The automation of survey, substantially increases detection efficiency and accuracy of detection.
The grating transmitter module first projects the raster image that one group of light intensity is distributed in dextrorotation to the low-voltage current mutual inductor to be measured；
Then again to described low-voltage current mutual inductor projection three coloured images of red, green, blue to be measured.
The grating transmitter module is made up of DLP projector；The DLP projector is arranged on same machine box with image capture module
It is interior；The machine box is placed in low-voltage current mutual inductor front to be measured, and is connected with data processing module；The DLP projector is in institute
Stating can be to the low-voltage current mutual inductor projection grating image to be measured and coloured image under the control of data processing module.
When the grating transmitter module is to the low-voltage current mutual inductor projection raster image to be measured, described image acquisition module synchronization
The raster image deformed through the low-voltage current mutual inductor modulation to be measured in collection reference planes, and led to using the raster image
Cross phase calculation and three-dimensional reconstruction obtains the three-dimensional coordinate data on the low-voltage current mutual inductor surface to be measured, then the three-dimensional is sat
Mark data are transferred to data processing module；
When the grating transmitter module is to low-voltage current mutual inductor projection three coloured images of red, green, blue to be measured, the figure
The low-voltage current mutual inductor to be measured is under three coloured images irradiations of red, green, blue in picture acquisition module synchronous acquisition reference planes
Image information, and synthesize the color texture data of the low-voltage current mutual inductor to be measured according to described image information, then will be described
Color texture data are transferred to data processing module.
Because three-dimensional coordinate data and color texture data come from same image capture module, therefore data processing module can be set up
The corresponding relation of the two, with reference to the digital image information of different angle shots, can reduce the 3D of low-voltage current mutual inductor to be measured
Appearance.
Described image acquisition module is made up of binocular camera, and the binocular camera is respectively arranged on grating transmitter module including two
The camera of both sides；Two cameras are shot to low-voltage current mutual inductor to be measured from different angles using hardware synchronization mechanism,
To obtain two width digital image informations of the low-voltage current mutual inductor to be measured, and the two width digital image information is passed through into signal
Line is uploaded to data processing module；Every width digital image information includes three-dimensional coordinate data and color texture data.
The camera front adds changeable optical filter, with the dissimilar material properties reality according to low-voltage current mutual inductor to be measured
The free switching of existing indigo plant white light source：When measurement has the low-voltage current mutual inductor to be measured of stronger reflective material, surveyed using blue light
Amount, only allows the blue light of specific wavelength to pass through, to reduce the interference of ambient light by installing optical filter；When measurement has other materials
During the low-voltage current mutual inductor to be measured of characteristic, optical filter is cut off, measured using white light.
By installing changeable optical filter additional in front of camera, can be selected according to the dissimilar material properties of low-voltage current mutual inductor to be measured
Select different light sources to measure, so as to suppress the interference of ambient light, improve the reliability of gathered data.
The data processing module includes data resolution module and error calculating module；The data resolution module receives described image
The digital image information that processing module is uploaded, and the digital image information is parsed, to obtain low-tension current mutual inductance to be measured
The apparent size of device；The error calculating module is according to the apparent size of the low-voltage current mutual inductor to be measured and storage in the mistake
The apparent size of the standard low pressure current transformer in difference computing module, calculates the apparent size of the low-voltage current mutual inductor to be measured
Error.
The data processing module is made up of computer；The computer passes through USB interface and holding wire and DLP projector respectively
It is connected with binocular camera, for controlling the image projection of DLP projector and locating the digital picture that reason binocular camera is photographed
Information, to obtain the apparent size data and error of low-voltage current mutual inductor to be measured.
As shown in Figure 2：The reference planes and DLP projector are located at the low-voltage current mutual inductor both sides to be measured respectively；Binocular
The optical focus line of video camera and DLP projector is parallel with the reference planes；The binocular camera focuses on the reference
In plane；The shooting area of the binocular camera is equal to the projected area of the DLP projector, can so make full use of throwing
Shadow grating.
Finally it should be noted that：The above embodiments are merely illustrative of the technical solutions of the present invention rather than its limitations, although reference
Above-described embodiment has been described in detail to the present invention, and those of ordinary skill in the art still can be to of the invention specific
Implementation method is modified or equivalent, these without departing from any modification of spirit and scope of the invention or equivalent,
Applying within pending claims.
Claims (10)
1. it is a kind of for low-voltage current mutual inductor outward appearance detection 3 D scanning system, it is characterised in that the system includes：
Low-voltage current mutual inductor installs module：For installing low-voltage current mutual inductor to be measured, and control the low-tension current to be measured mutual
The translation and rotation of sensor；
Grating transmitter module：For to the low-voltage current mutual inductor projection grating to be measured；
Image capture module：For gathering the low-voltage current mutual inductor image to be measured after being processed through grating, and the image that will be collected
Information is sent to data processing module；
Data processing module：The image information that parsing image capture module sends, and by the image information and standard low pressure after parsing
The three-dimensional image information of current transformer carries out comparing calculation, draws the detection error of low-voltage current mutual inductor to be measured.
2. 3 D scanning system according to claim 1, it is characterised in that
The low-voltage current mutual inductor installs module to be included：
Motion control case：Connect electronic control translation stage and electronically controlled rotary table respectively by holding wire, and control the translation of electronic control translation stage
With the rotation of electronically controlled rotary table；
Electronic control translation stage：On line slideway, and do straight on the line slideway under the control of the motion control case
Line is moved；
Electronically controlled rotary table：It is arranged on the electronic control translation stage, is moved along a straight line with the electronic control translation stage, while in the fortune
Three-dimensional rotating is done under the control of dynamic control cabinet；
Shock insulation platform：It is fixed in the electronically controlled rotary table, is moved with the electronically controlled rotary table, for installing low-tension current to be measured
Transformer, and vibrations to surrounding environment and low-voltage current mutual inductor to be measured shield.
3. three-dimensional grating emission system according to claim 1, it is characterised in that
The grating transmitter module first projects the raster image that one group of light intensity is distributed in dextrorotation to the low-voltage current mutual inductor to be measured；
Then again to described low-voltage current mutual inductor projection three coloured images of red, green, blue to be measured.
4. the 3 D scanning system according to claim 1 or 3, it is characterised in that
The grating transmitter module is made up of DLP projector；The DLP projector is arranged on same machine box with image capture module
It is interior；The machine box is placed in low-voltage current mutual inductor front to be measured, and is connected with data processing module；The DLP projector is in institute
Stating can be to the low-voltage current mutual inductor projection grating image to be measured and coloured image under the control of data processing module.
5. 3 D scanning system according to claim 3, it is characterised in that
When the grating transmitter module is to the low-voltage current mutual inductor projection raster image to be measured, described image acquisition module synchronization
The raster image deformed through the low-voltage current mutual inductor modulation to be measured in collection reference planes, and led to using the raster image
Cross phase calculation and three-dimensional reconstruction obtains the three-dimensional coordinate data on the low-voltage current mutual inductor surface to be measured, then the three-dimensional is sat
Mark data are transferred to data processing module；
When the grating transmitter module is to low-voltage current mutual inductor projection three coloured images of red, green, blue to be measured, the figure
The low-voltage current mutual inductor to be measured is under three coloured images irradiations of red, green, blue in picture acquisition module synchronous acquisition reference planes
Image information, and synthesize the color texture data of the low-voltage current mutual inductor to be measured according to described image information, then will be described
Color texture data are transferred to data processing module.
6. 3 D scanning system according to claim 1, it is characterised in that
Described image acquisition module is made up of binocular camera, and the binocular camera is respectively arranged on grating transmitter module including two
The camera of both sides；Two cameras are shot to low-voltage current mutual inductor to be measured from different angles using hardware synchronization mechanism,
To obtain two width digital image informations of the low-voltage current mutual inductor to be measured, and the two width digital image information is passed through into signal
Line is uploaded to data processing module, and every width digital image information includes three-dimensional coordinate data and color texture data.
7. 3 D scanning system according to claim 6, it is characterised in that
The camera front adds changeable optical filter, with the dissimilar material properties reality according to low-voltage current mutual inductor to be measured
The free switching of existing indigo plant white light source：When measurement has the low-voltage current mutual inductor to be measured of stronger reflective material, surveyed using blue light
Amount, only allows the blue light of specific wavelength to pass through, to reduce the interference of ambient light by installing optical filter；When measurement has other materials
During the low-voltage current mutual inductor to be measured of characteristic, optical filter is cut off, measured using white light.
8. 3 D scanning system according to claim 1, it is characterised in that
The data processing module includes data resolution module and error calculating module；The data resolution module receives described image
The digital image information that processing module is uploaded, and the digital image information is parsed, to obtain low-tension current mutual inductance to be measured
The apparent size of device；The error calculating module is according to the apparent size of the low-voltage current mutual inductor to be measured and storage in the mistake
The apparent size of the standard low pressure current transformer in difference computing module, calculates the apparent size of the low-voltage current mutual inductor to be measured
Error.
9. three-dimensional fiber scanning system according to claim 8, it is characterised in that
The data processing module is made up of computer；The computer passes through USB interface and holding wire and DLP projector respectively
It is connected with binocular camera, for controlling the image projection of DLP projector and locating the digital picture that reason binocular camera is photographed
Information, to obtain the apparent size data and error of low-voltage current mutual inductor to be measured.
10. three-dimensional fiber scanning system according to claim 5, it is characterised in that
The reference planes and DLP projector are located at the low-voltage current mutual inductor both sides to be measured respectively；Binocular camera and DLP
The optical focus line of projecting apparatus is parallel with the reference planes；The binocular camera is focused in the reference planes；It is described
The shooting area of binocular camera is equal to the projected area of the DLP projector.
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| CN113884022A (en) * | 2021-09-28 | 2022-01-04 | 天津朗硕机器人科技有限公司 | Three-dimensional detection device based on structured light |
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