CN106643501B - A kind of light curtain target building system and method - Google Patents
A kind of light curtain target building system and method Download PDFInfo
- Publication number
- CN106643501B CN106643501B CN201611238015.7A CN201611238015A CN106643501B CN 106643501 B CN106643501 B CN 106643501B CN 201611238015 A CN201611238015 A CN 201611238015A CN 106643501 B CN106643501 B CN 106643501B
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- light source
- turntable
- light curtain
- curtain target
- deviation
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Classifications
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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
- G01B11/002—Measuring arrangements characterised by the use of optical techniques for measuring two or more coordinates
Abstract
The invention discloses a kind of light curtain targets to construct system, it include: two turntables being oppositely arranged, the laser emitter and imaging sensor for being used to form light curtain target are provided on the turntable, and be located at the light source of described image sensor two sides center, described image sensor be used for acquire include turntable described in opposite initial pictures；The light source in the initial pictures for identification, and calculate the image processor of the deviation between the line center of the light source and the original image center；Horizontally rotate for controlling the turntable according to the deviation, until the deviation is zero, and controls the turntable and lift predetermined angle so that the laser emitter forms the controller of light curtain target in pitch orientation.It ensure that the optical axis of the imaging sensor on two turntables is directed toward to be overlapped, realize optical centre alignment, improve measurement accuracy.The present invention also provides a kind of light curtain target construction methods, have above-mentioned beneficial effect.
Description
Technical field
The present invention relates to technical field of electro-optical measurement, in particular to a kind of light curtain target constructs system, further relates to a kind of light curtain
Target construction method.
Background technique
Light curtain target is a kind of instrument that point of impact coordinate position is reached using photoelectric conversion technique measurement Flight Projectile, due to
Using photoelectric technology, belong to untouchable measurement method, it is measuring accuracy height, good reliability, low in cost, gradually replace
Steel sheet target, net target and coil target realize the measurement of velocity of shot and closeness.
The building of light curtain target is the basis of pill impacting position measurement, using two parallel optoelectronic devices, shape when building
At optics bullet section spatially, a face plank is erect using in scheduled testing location, shoots certain son according to the rules
Bullet number analyzes the coordinate for obtaining bullet according to the shell hole trace left on cardboard or plank.Two for constructing light curtain target are parallel
Optoelectronic device whether parallel alignment, directly influence the precision of final measurement.The light curtain target of small target surface can use machine
The mode of tool positioning installs the photoelectric measurement equipment of two sides, to guarantee that equipment forms the light curtain of space coincidence, however, for big
The light curtain target of target surface can not be built due to the influence of the complexity of machining, the factors such as not convenient of installation and transportation using above-mentioned
Mode.
Therefore, how to construct optical axis in light curtain target and be directed toward the optoelectronic device being overlapped, and then improving measurement accuracy is this field
Technical staff's technical issues that need to address.
Summary of the invention
The object of the present invention is to provide a kind of light curtain targets to construct system, constructs the photoelectricity that optical axis is directed toward coincidence in light curtain target and sets
It is standby, and then improve measurement accuracy.
In order to solve the above technical problems, the present invention provides a kind of light curtain target building system, comprising:
Two turntables being oppositely arranged, the laser emitter for being used to form light curtain target is provided on the turntable and image passes
Sensor, and it is located at the light source of described image sensor two sides center, described image sensor includes for acquiring
There are the initial pictures of turntable described in opposite；
The light source in the initial pictures for identification, and calculate the light source line center and the initial graph
The image processor of deviation between inconocenter；
Horizontally rotate for controlling the turntable according to the deviation, until the deviation is zero, and described in control
Turntable lifts predetermined angle so that the laser emitter forms the controller of light curtain target in pitch orientation.
Preferably, in above-mentioned light curtain target building system, described image processor is using described in threshold segmentation method identification
The light source in initial pictures.
Preferably, in above-mentioned light curtain target building system, described image processor is also used to calculate the center of gravity of the light source
Position, and the position of centre of gravity is connected line as the light source.
Preferably, in above-mentioned light curtain target building system, the light source is LED light source.
The present invention also provides a kind of light curtain target construction methods, comprising:
Step S1: two turntables are oppositely arranged, the laser emitter for being used to form light curtain target is provided on the turntable
And imaging sensor, and it is located at the light source of described image sensor two sides center, described image sensor is used for
Acquisition includes the initial pictures of turntable described in opposite；
Step S2: described image sensor acquisition includes the initial pictures of turntable described in opposite；
Step S3: image processor identifies the light source in the initial pictures, and calculates in the line of the light source
Deviation between the heart and the original image center；
Step S4: controller controls the turntable according to the deviation and horizontally rotates, until the deviation is zero, and
It controls the turntable and lifts predetermined angle so that the laser emitter forms light curtain target in pitch orientation.
Preferably, in above-mentioned light curtain target construction method, in the step S3, described image processor uses Threshold segmentation
Method identifies the initial pictures.
Preferably, in above-mentioned light curtain target construction method, in the step S3, the line center for calculating the light source
Before deviation between the original image center, further includes:
It calculates the position of centre of gravity of the light source, and the position of centre of gravity is connected the line as the light source.
A kind of light curtain target provided by the present invention constructs system, comprising: two turntables being oppositely arranged are arranged on the turntable
There are the laser emitter and imaging sensor for being used to form light curtain target, and is located at described image sensor two sides centre bit
The light source set, described image sensor be used for acquire include turntable described in opposite initial pictures；It is described initial for identification
The light source in image, and calculate the image of the deviation between the line center of the light source and the original image center
Processor；Horizontally rotate for controlling the turntable according to the deviation, until the deviation is zero, and controls described turn
Platform lifts predetermined angle so that the laser emitter forms the controller of light curtain target in pitch orientation.
Since the laser emitter and imaging sensor that are used to form light curtain target to be all set on turntable, on a turntable
The laser that issues of laser emitter received by the imaging sensor of opposite turntable so that form light curtain target between turntable, image
Sensor identifies the light source in the initial pictures, and calculate the light source line center and the original image center
Between deviation, the turntable is controlled according to the deviation and is horizontally rotated, until the deviation is zero, ensure that two turns
The optical axis of imaging sensor on platform, which is directed toward, to be overlapped, and is realized optical centre alignment, is improved measurement accuracy.
The present invention also provides a kind of light curtain target construction methods, have above-mentioned beneficial effect, details are not described herein.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
The embodiment of invention for those of ordinary skill in the art without creative efforts, can also basis
The attached drawing of offer obtains other attached drawings.
Fig. 1 is that light curtain target provided by the embodiment of the present invention constructs system schematic；
Fig. 2 is the flow chart of light curtain target construction method provided by the embodiment of the present invention.
Specific embodiment
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with the embodiment of the present invention
In attached drawing, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described embodiment is
A part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, those of ordinary skill in the art
Every other embodiment obtained without making creative work, shall fall within the protection scope of the present invention.
Referring to FIG. 1, Fig. 1 is that light curtain target provided by the embodiment of the present invention constructs system schematic.
In a kind of specific embodiment, a kind of light curtain target building system is provided, comprising:
Two turntables 04 being oppositely arranged are provided with 03 He of laser emitter for being used to form light curtain target on the turntable 04
Imaging sensor 02, and it is located at the light source 01 of 02 two sides center of described image sensor, described image sensor
02 for acquire include turntable 04 described in opposite initial pictures；
The light source 01 in the initial pictures for identification, and calculate the light source 01 line center and it is described just
The image processor 06 of deviation between beginning picture centre；
Horizontally rotate for controlling the turntable 04 according to the deviation, until the deviation is zero, and controls institute
It states turntable 04 and lifts predetermined angle so that the laser emitter 03 forms the controller 05 of light curtain target in pitch orientation.
Wherein, turntable 04 can be in pitch orientation including that can be equipped on the rotating base that horizontal plane is rotated, pedestal
The rotary part rotated, rotary part are set between female bracket, be provided on rotary part imaging sensor 02 with
And laser emitter 03, light source 01 are fixedly installed in female bracket, positioned at the two sides center of imaging sensor 02, not
It is rotated with rotary part.According to 04 layout designs of turntable, when the optical axis of two imaging sensors 02 is aligned, two light sources, 01 line
Midpoint is imaged on respectively on the vertical central axis line of other side's visual field.According to this feature, by the position for judging 01 line midpoint of light source
It sets, can determine the direction of optical axis rotation, control turntable 04 is rotated according to certain step-length, by closed loop feedback, adjusts light source
01 line midpoint falls in it on image vertical central axis line, achievees the purpose that the optical axis is aligned.
The working method of whole system: two turntables 04 are oppositely arranged, and the acquisition of imaging sensor 02 includes described in opposite
Initial pictures are sent to image processor 06 by the initial pictures of turntable 04, and image processor 06 identifies in the initial pictures
Light source 01, detect its position in the picture, and calculate between the line center of light source 01 and the original image center
Deviation, controller 05 according to deviation control turntable 04 rotated, be not still able to satisfy 01 line of light source after rotation
Center when being overlapped with picture centre, controller 05 repeats the above steps, until the deviation is zero, at this point, guaranteeing
The optical axis of imaging sensor 02 on two turntables 04, which is directed toward, to be overlapped, and optical centre alignment is realized.When the light of two sides turntable 04
After center is overlapped, control computer control 04 pitch orientation of turntable lifts predetermined angle, such as 45 °, opens laser, so that
Light curtain is formed between two turntables 04, completes light curtain target building.
In above-mentioned light curtain target building system, described image processor 06 identifies the initial graph using threshold segmentation method
The light source 01 as in.
Wherein, imagethresholding is a kind of traditional most common image partition method, because it realizes simple, calculating
It is more stable and become most basic and most widely used cutting techniques in image segmentation to measure small, performance.It is especially suitable for target
The image of different grey-scale range is occupied with background.When current 01 size of light source of the bright spot goal satisfaction recognized, and phase
Installation requirement is met to position, illustrates that bright spot target is light source 01.
Further, in above-mentioned light curtain target building system, described image processor 06 is also used to calculate the light source 01
Position of centre of gravity, and the position of centre of gravity is connected line as the light source 01.In order to improve measurement accuracy, count first
The center of gravity of light source 01 is calculated, the midpoint of the line of position of centre of gravity is just more accurate.
Further, in above-mentioned light curtain target building system, the light source 01 is LED light source 01.
Certainly, light source 01 includes but is not limited to LED light source 01, can also be other types of light source 01, in protection model
In enclosing.
As shown in Fig. 2, Fig. 2 is the flow chart of light curtain target construction method provided by the embodiment of the present invention.
The present invention also provides a kind of light curtain target construction methods, comprising:
Step S1: two turntables are oppositely arranged, the laser emitter for being used to form light curtain target is provided on the turntable
With imaging sensor 02, and it is located at the light source of 02 two sides center of described image sensor, described image sensor
02 for acquire include turntable described in opposite initial pictures；
Step S2: the acquisition of described image sensor 02 includes the initial pictures of turntable described in opposite；
Step S3: image processor 06 identifies the light source in the initial pictures, and calculates the line of the light source
Deviation between center and the original image center；
Step S4: controller 05 controls the turntable according to the deviation and horizontally rotates, until the deviation is zero,
And it controls the turntable 04 and lifts predetermined angle so that the laser emitter 03 forms light curtain target in pitch orientation.
Further, in above-mentioned light curtain target construction method, in the step S3, described image processor 06 uses threshold value
Dividing method identifies the initial pictures.
Further, in above-mentioned light curtain target construction method, in the step S3, in the line for calculating the light source
Before deviation between the heart and the original image center, further includes:
It calculates the position of centre of gravity of the light source, and the position of centre of gravity is connected the line as the light source.
Specifically, the acquisition of image processor 06 includes the initial pictures of turntable 04 described in opposite, know in initial pictures
The LED light source of other turntable two sides, judges that LED light source whether there is, if it is present calculating the center of gravity of LED light source, calculates line
Center is compared, calculating position deviation, output angle deviation to controller with the optical centre position of image processor 06
05；If it does not exist, then recalculating brightness of image, and sensor integration time is adjusted, central data image.
Controller 05 receives position deviation, controls turntable 04 according to position deviation and horizontally rotates, recalculates after rotation
Position deviation controls 04 pitching predetermined angle of turntable, control laser hair until stop operating turntable 04 when position deviation is zero
Emitter 03 emits laser, forms light curtain target.
Each embodiment is described in a progressive manner in specification, the highlights of each of the examples are with other realities
The difference of example is applied, the same or similar parts in each embodiment may refer to each other.For device disclosed in embodiment
Speech, since it is corresponded to the methods disclosed in the examples, so being described relatively simple, related place is referring to method part illustration
?.
Used herein a specific example illustrates the principle and implementation of the invention, and above embodiments are said
It is bright to be merely used to help understand method and its core concept of the invention.It should be pointed out that for the ordinary skill of the art
, without departing from the principle of the present invention, can be with several improvements and modifications are made to the present invention for personnel, these improvement
It is also fallen within the protection scope of the claims of the present invention with modification.
Claims (7)
1. a kind of light curtain target constructs system characterized by comprising
Two turntables being oppositely arranged are provided with the laser emitter and image sensing for being used to form light curtain target on the turntable
Device, and it is located at the light source of described image sensor two sides center, described image sensor includes for acquiring
The initial pictures of turntable described in opposite；
The light source in the initial pictures for identification, and calculate the light source line center and the initial pictures in
The image processor of deviation between the heart；
Horizontally rotate for controlling the turntable according to the deviation, until the deviation is zero, and controls the turntable
Predetermined angle is lifted so that the laser emitter forms the controller of light curtain target in pitch orientation；
Wherein, turntable includes that can be equipped be turned in pitch orientation on the rotating base that horizontal plane is rotated, pedestal
Dynamic rotary part, rotary part are set between female bracket, and imaging sensor and laser hair are provided on rotary part
Emitter；Light source is fixedly installed in female bracket, and is located at the two sides center of imaging sensor, the view of two imaging sensors
When axis is aligned, two light source line midpoints are imaged on respectively on the vertical central axis line of other side's visual field.
2. light curtain target as described in claim 1 constructs system, which is characterized in that described image processor uses Threshold segmentation side
Method identifies the light source in the initial pictures.
3. light curtain target as claimed in claim 2 constructs system, which is characterized in that described image processor is also used to calculate described
The position of centre of gravity of light source, and the position of centre of gravity is connected line as the light source.
4. light curtain target as claimed in claim 3 constructs system, which is characterized in that the light source is LED light source.
5. a kind of light curtain target construction method characterized by comprising
Step S1: two turntables are oppositely arranged, and the laser emitter and figure for being used to form light curtain target are provided on the turntable
As sensor, and it is located at the light source of described image sensor two sides center, described image sensor is for acquiring
It include the initial pictures of turntable described in opposite；
Step S2: described image sensor acquisition includes the initial pictures of turntable described in opposite；
Step S3: image processor identifies the light source in the initial pictures, and calculate the line center of the light source with
Deviation between the original image center；
Step S4: controller controls the turntable according to the deviation and horizontally rotates, until the deviation is zero, and controls
The turntable lifts predetermined angle so that the laser emitter forms light curtain target in pitch orientation；
Wherein, turntable includes that can be equipped be turned in pitch orientation on the rotating base that horizontal plane is rotated, pedestal
Dynamic rotary part, rotary part are set between female bracket, and imaging sensor and laser hair are provided on rotary part
Emitter, light source are fixedly installed in female bracket, positioned at the two sides center of imaging sensor, the optical axis of two imaging sensors
When alignment, two light source line midpoints are imaged on respectively on the vertical central axis line of other side's visual field.
6. light curtain target construction method as claimed in claim 5, which is characterized in that in the step S3, described image processor
The initial pictures are identified using threshold segmentation method.
7. light curtain target construction method as claimed in claim 6, which is characterized in that described to calculate the light in the step S3
Before deviation between the line center and the original image center in source, further includes:
It calculates the position of centre of gravity of the light source, and the position of centre of gravity is connected the line as the light source.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611238015.7A CN106643501B (en) | 2016-12-28 | 2016-12-28 | A kind of light curtain target building system and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611238015.7A CN106643501B (en) | 2016-12-28 | 2016-12-28 | A kind of light curtain target building system and method |
Publications (2)
| Publication Number | Publication Date |
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| CN106643501A CN106643501A (en) | 2017-05-10 |
| CN106643501B true CN106643501B (en) | 2019-05-21 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201611238015.7A Expired - Fee Related CN106643501B (en) | 2016-12-28 | 2016-12-28 | A kind of light curtain target building system and method |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110220481B (en) * | 2019-05-09 | 2020-06-26 | 易思维（杭州）科技有限公司 | Handheld visual detection equipment and pose detection method thereof |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2023853A (en) * | 1978-06-23 | 1980-01-03 | Muller & Cie Ets M | Apparatus for checking parallelism of vehicle wheels |
| JPS59112214A (en) * | 1982-12-20 | 1984-06-28 | Toshiba Corp | Axis aligning device |
| CN1542401A (en) * | 2003-05-13 | 2004-11-03 | 中国科学院长春光学精密机械与物理研 | Method for inspecting depth of parallelism for optic axis and mounting basal plane |
| CN102192682A (en) * | 2011-04-20 | 2011-09-21 | 西安工业大学 | Four-screen accuracy target structure assembling and parameter measuring method |
| CN103363926A (en) * | 2013-08-01 | 2013-10-23 | 西安工业大学 | Device and method for detecting light-screen parameters of light-screen targets |
-
2016
- 2016-12-28 CN CN201611238015.7A patent/CN106643501B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2023853A (en) * | 1978-06-23 | 1980-01-03 | Muller & Cie Ets M | Apparatus for checking parallelism of vehicle wheels |
| JPS59112214A (en) * | 1982-12-20 | 1984-06-28 | Toshiba Corp | Axis aligning device |
| CN1542401A (en) * | 2003-05-13 | 2004-11-03 | 中国科学院长春光学精密机械与物理研 | Method for inspecting depth of parallelism for optic axis and mounting basal plane |
| CN102192682A (en) * | 2011-04-20 | 2011-09-21 | 西安工业大学 | Four-screen accuracy target structure assembling and parameter measuring method |
| CN103363926A (en) * | 2013-08-01 | 2013-10-23 | 西安工业大学 | Device and method for detecting light-screen parameters of light-screen targets |
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| CN106643501A (en) | 2017-05-10 |
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