CN208187381U - Laser leveler automatic checkout system - Google Patents
Laser leveler automatic checkout system Download PDFInfo
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- CN208187381U CN208187381U CN201820440304.3U CN201820440304U CN208187381U CN 208187381 U CN208187381 U CN 208187381U CN 201820440304 U CN201820440304 U CN 201820440304U CN 208187381 U CN208187381 U CN 208187381U
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Abstract
The utility model provides a kind of laser leveler automatic checkout system comprising: vertical detection station, vertical detection station are equipped with pentaprism and vertical laser line are deflected to horizontal laser line for detecting vertical laser line, station；Horizontal detection station is used for detection level laser rays；Optical collimator, the optical collimator is interior to be equipped with object lens, graticle, and the object lens are opposite with the graduation Board position, and laser rays is incident upon on the graticle after the object lens；Camera is used to acquire the laser image on the graticle；Computer, the camera are connect with the computer, and the computer is for analyzing the image that camera acquires, calculating.The vertically and horizontally laser rays angle that technical solutions of the utility model can be emitted laser leveler is automatically, precisely measured, and the testing time is greatly shortened, improve efficiency, measurement of a set of optical collimator+camera to vertical laser line and horizontal laser line is realized simultaneously, it reduces costs, also reduces the space layout of detection device.
Description
Technical field
The utility model belongs to the fields such as optical detection, machine vision, and in particular to one kind is for detecting laser leveler
Shoot laser line automatic checkout equipment.
Background technique
Laser leveler can project laser rays, be incident upon on object, generate can horizontally or vertically line for reference,
The fields such as engineering, building, decoration using very extensive.The angle of laser leveler shoot laser line is laser rays and eye point
Place horizontal plane or vertical guide angulation, are an important indicators for measuring laser leveler precision, and angle detection is usual
It is to ensure that product has qualified quality after processing group installs as the final inspection project on laser leveler production line.Currently
The laser leveler of domestic production is mostly to be judged that accuracy and repeatability are difficult to obtain by artificial macroscopic mode
It ensures, and detection efficiency is very low.
Optical collimator is a kind of metrical instrument that the auto-collimation principle using light measures, it can be by angle measurement
Linear measurement is converted to, the measurement of the accuracies such as low-angle, flatness, the depth of parallelism is widely used in.Utilize optical collimator pair
The shoot laser line angle degree of laser leveler measures, and can greatly improve the precision of measurement.And machine vision is to pass through
Targeted transformation is digital image signal by image-pickup device, is obtained according to information such as pixel distribution, form, brightness, colors
Clarification of objective is taken, to be judged.Artificial vision is replaced with machine vision, the repeated industrial production of high-volume can be improved
The degree of automation of process.Machine vision technique is widely used in industry manufacture, intelligent measurement field.If can be in laser
Machine vision technique is applied in the detection process of level meter, can greatly improve precision and efficiency of detecting, it is therefore necessary to this
One technology is further to be studied.
Utility model content
In view of the foregoing deficiencies of prior art, optical collimator is used the purpose of this utility model is to provide a kind of
The system that laser leveler shoot laser line is detected with NI Vision Builder for Automated Inspection.
In order to achieve the above objects and other related objects, the utility model provides a kind of automatic detection system of laser leveler
System comprising: vertical detection station, the vertical detection station is for placing measured laser level meter, the vertical detection work
Position is equipped with pentaprism, and vertical laser line can be deflected to horizontal laser line by the pentaprism, to carry out to vertical laser line
Detection；Horizontal detection station, the horizontal detection station examine horizontal laser line for placing measured laser level meter
It surveys；Optical collimator, the optical collimator is interior to be equipped with object lens, graticle, and the object lens are opposite with the graduation Board position, institute
The laser rays eye point for stating measured laser level meter in pentaprism and the horizontal detection station should be with the optical collimator
Axis be located at sustained height, horizontal laser line is incident upon on the graticle after the object lens；Camera, the camera shooting
Head is for acquiring the laser image on the graticle；Computer, the camera are connect with the computer, the computer
For being analyzed the image that camera acquires, being calculated, laser rays shooting angle is obtained.
Preferably, the horizontal detection station is equipped with turntable.
Preferably, the turntable is connect with the first upper and lower position regulating mechanism.
Preferably, the pentaprism is connect with the second upper and lower position regulating mechanism.
Preferably, the vertical detection station, be equipped with positioning pin in horizontal detection station, with measured laser level meter bottom
The cooperation of portion's location hole.
As described above, the laser leveler automatic checkout system and detection method of the utility model have below beneficial to effect
Fruit: technical solutions of the utility model can to laser leveler be emitted vertically and horizontally laser rays angle carry out automatically, essence
It really measures, and the testing time is greatly shortened, improve efficiency, while realizing a set of optical collimator+camera to vertical
The measurement of straight laser rays and horizontal laser line, reduces costs, also reduces the space layout of detection device.
Detailed description of the invention
Fig. 1 is the structural schematic diagram that the utility model embodiment tests test macro.
Light schematic diagram when Fig. 2 is the progress equipment Alignment of the utility model embodiment.
Fig. 3 is light schematic diagram when the utility model embodiment carries out laser rays detection.
1, pentaprism；2, vertical detection station；3, horizontal detection station；4, turntable；5, optical collimator；6, camera；
7, computer；8, the second upper and lower position regulating mechanism；9, the first upper and lower position regulating mechanism；10, standard water level；11, object lens；
12, graticle；13, measured laser level meter.
Specific embodiment
The embodiments of the present invention is illustrated by particular specific embodiment below, those skilled in the art can be by this
Content disclosed by specification understands other advantages and effect of the utility model easily.
Please refer to Fig. 1,2,3.It should be clear that this specification structure depicted in this specification institute accompanying drawings, ratio, size etc., only to
Cooperate the revealed content of specification, so that those skilled in the art understands and reads, is not intended to limit the utility model
Enforceable qualifications, therefore do not have technical essential meaning, the modification of any structure, the change of proportionate relationship or size
Adjustment, in the case where not influencing the effect of the utility model can be generated and the purpose that can reach, should all still fall in the utility model
Revealed technology contents obtain in the range of capable of covering.Meanwhile in this specification it is cited as "upper", "lower", " left side ",
The term on " right side ", " centre " and " one " etc. is merely convenient to being illustrated for narration, rather than enforceable to limit the utility model
Range, relativeness are altered or modified, under the content of no substantial changes in technology, enforceable when being also considered as the utility model
Scope.
As shown in Figure 1, the utility model provides a kind of laser leveler automatic checkout system comprising: vertical detection work
Position 2, horizontal detection station 3, optical collimator 5, camera 6 and computer 7.
Vertical detection station 2 is equipped with pentaprism 1, pentaprism for placing measured laser level meter, vertical detection station 2
Vertical laser line can be deflected to horizontal laser line by 1.Pentaprism 1 is connect with the second upper and lower position regulating mechanism 8, on second
Lower position adjusting mechanism 8 can adjust the height of pentaprism 1.
Pentaprism 1 is common optical element, and having makes optical characteristics of the incident light at 90 ° of main cross section intrinsic deflection.Laser
The vertical laser line of level meter outgoing reflects 90 ° of post deflection by pentaprism 1, is converted into horizontal laser rays and enters optical alignment
It is detected after instrument, the drift angle of laser rays and horizontal plane after refraction can be measured.According to the refraction principle of pentaprism, the drift angle
That is the shooting angle of vertical laser line.After pentaprism 1, using a set of optical collimator+camera, so that it may to laser water
The vertical laser line and horizontal laser line of level outgoing are successively detected, and are reduced costs, are also reduced entire detection device
Space layout.
Horizontal detection station 3 is additionally provided with a turntable 4, is tested for placing measured laser level meter in horizontal detection station 3
Laser leveler is placed on turntable 4, and rotating table 4 can drive measured laser level meter to rotate.Turntable 4 and the first upper and lower position
Regulating mechanism 9 connects, and turntable 4 can be driven to move up and down by the first upper and lower position regulating mechanism 9, and then can drive measured laser
Level meter moves up and down.
Vertical detection station 2, horizontal detection station 3 and 4 front and back parallel arranged of optical collimator are point-blank.Optics
Object lens 11, graticle 12 are equipped in collimator 4, object lens 11 are opposite with 12 position of graticle.Laser rays occurs after object lens 11
Refraction, finally on present graticle 12.When being detected, measured laser is horizontal in pentaprism 1 and horizontal detection station
The laser rays eye point of instrument should be located at sustained height with the axis of optical collimator.In order to be accurately positioned, vertical detection work
Positioning pin is respectively provided on position 2, horizontal detection station 3 to position measured laser level meter.
Optical collimator 5 is used to receive the vertical laser line of laser leveler outgoing reflected by pentaprism, Yi Jizhi
Pick out the horizontal laser line penetrated.If laser rays shooting angle and horizontal plane are at a subtle drift angle, optical collimator can be to reception
The laser rays arrived generates deflection, is imaged on the graticle of instrument internal.The basic principle of optical collimator is autocollimation method, is led to
It is usually used in carrying out micrometric measurement to the low-angle displacement of measured piece.The shoot laser line of external laser leveler passes through optical alignment
The object lens of instrument, are finally imaged on graticle.It needs to be calibrated using standard water level before measurement, it is believed that it, which is emitted, swashs
Light is completely parallel to optical collimator axis.The laser rays of standard water level outgoing after optical collimator by being imaged onOPoint,
This point on the basis of point.In measurement process, if tested laser leveler and horizontal plane are at a subtle drift angleβ, pass through optical alignment
It is imaged on after instrumentO’Place.Pass through measurementOO’Distance utilizes the geometric optical theory of above-mentioned optical collimator, so that it may calculate
The angle of measured laser level meter shoot laser lineβ, to judge whether qualification.
Camera 6 is mounted on the tail portion of optical collimator 4, and camera 6 is used to acquire the laser image on graticle 12.It takes the photograph
Picture head 6 is connect with computer 7, and computer 7 is for analyzing the image that camera 6 acquires, calculating.
Camera 6 is mounted on optical collimator tail portion, can acquire the image on optical collimator graticle in real time.Camera shooting
Head is monochromatic black and white camera, and Ethernet interface has high pixel and high frame per second.Acquired image is uploaded to meter by camera 6
In calculation machine 7.Since the image of laser rays is dotted stacking, the intermediate bright both sides of presentation are dark, and the more noises in edge, need to carry out to image
A series of processing, it is necessary first to judge which noise for the effective width of laser, remove invalid noise, then carry out to image
Binaryzation.Effective rectangular area of laser rays pixel is fitted according to algorithm, so that the centerline pixels for obtaining laser rays are sat
Mark.Standard water level and measured laser level meter laser rays picture centre line pixel coordinate are obtained respectively, calculate the coordinate of the two
Difference, then it is converted to actual distance, so that it may calculate the angle of measured laser level meter shoot laser line.
The method detected using above-mentioned laser leveler automatic checkout system comprising following steps:
1) height adjustment: adjustment pentaprism mounting height, turntable mounting height, it is ensured that pentaprism exit facet center is placed
It is located at sustained height in the laser rays eye point position of the measured laser level meter of horizontal detection station and optical collimator axis；
2) camera calibration: according to the graticle image of camera acquisition, there are master scale, computer root on graticle
According to the true physical length and pixel number between several scales, it is long to calculate the corresponding actual physics of single pixel point
Degree, is denoted ask。
3) equipment Alignment: standard laser level meter is placed on horizontal detection station, standard laser level meter is opened, waits until
After its horizontal laser line being emitted is stablized, computer can be automatically by the laser of the graticle laser image of camera acquisition at this time
Centerline pixels coordinate record gets off as a reference point, is denoted asy 0 ；
4) horizontal laser line detects: testing laser level meter being placed on horizontal detection station, it is horizontal to open testing laser
Instrument, after the horizontal laser line of its outgoing is stablized, computer can be automatically by the graticle laser figure of camera acquisition at this time
The laser center line pixel coordinate of picture, which is recorded, to be denoted asy 1 , according to geometric optical theory, havek|y 1 -y 0 | = f’ tanβ, therefore
The calculation formula of horizontal laser line shooting angle β are as follows:β = arctan[k|y 1 -y 0 |/f’], whereinkIt is corresponding for single pixel point
Actual physics length；f 'For optical collimator objective focal length, if the shooting angleβAngle is in threshold range, then it is assumed that quilt
The horizontal laser line for surveying laser leveler outgoing is qualified；
5) vertical laser line detects: testing laser level meter being placed on vertical detection station, it is horizontal to open testing laser
Instrument measures laser rays and horizontal plane that vertical laser line passes through pentaprism refraction after the vertical laser line of its outgoing is stablized
Drift angle, according to the refraction principle of pentaprism, the drift angle, that is, vertical laser line shooting angle, according to the calculating side in step 4)
Method, if the shooting angle is in threshold range, then it is assumed that the vertical laser line of measured laser level meter outgoing is qualified.
6) for horizontal detection station, due to horizontal laser line be distributed in the horizontal direction it is very long, every time can be into when measurement
The light entered to optical collimator be it is a bit of in laser rays horizontal direction, such measurement result do not have it is representative and
Generality.By revolving-turret, the rotation of measured laser level meter is driven, the horizontal laser line of outgoing can be allowed to be segmented and enter light
It learns and is measured in collimator, it is hereby achieved that most accurate measurement result.In order to shorten time of measuring, 0 °, 45 ° is usually taken
These three representative rotation angles measure with -45 °.For vertical detection station, since vertical laser line only has
One section can reflect away by pentaprism, therefore the laser rays limited length after pentaprism reflects, and so there is no need to vertical
Segmentation detection is carried out to it in detection station.In horizontal detection station segmentation detection process, turntable is first rotated into laser level
It is horizontal to measure laser leveler outgoing under the position then according to step 4) for the position of instrument face optical collimator, i.e. 0 ° of position
The angle of laser rays；Turntable is rotated clockwise to 45 ° of positions again, laser leveler under the position is measured and is emitted horizontal laser line
Angle；Turntable is finally rotated counterclockwise into -45 ° of positions, measures laser leveler outgoing horizontal laser line under the position
Angle；The angle that three positions obtain is comprehensively compared, if three angles all within the scope of defined threshold, and the angle of three angles
Difference is within the scope of defined threshold, then it is assumed that the horizontal laser line of measured laser level meter outgoing is qualified.
Technical solutions of the utility model can carry out the vertically and horizontally laser rays angle that laser leveler is emitted automatic
Ground accurately measures, and the testing time is greatly shortened, and improves efficiency, while realizing a set of optical collimator+camera
Measurement to vertical laser line and horizontal laser line, reduces costs, and also reduces the space layout of detection device.So this
Utility model effectively overcomes various shortcoming in the prior art and has high industrial utilization value.
The above embodiments are only illustrative of the principle and efficacy of the utility model, and not for limitation, this is practical new
Type.Any person skilled in the art can all carry out above-described embodiment under the spirit and scope without prejudice to the utility model
Modifications and changes.Therefore, such as those of ordinary skill in the art without departing from the revealed essence of the utility model
All equivalent modifications or change completed under mind and technical idea, should be covered by the claim of the utility model.
Claims (5)
1. a kind of laser leveler automatic checkout system, characterized in that it comprises:
Vertical detection station, the vertical detection station are used to place measured laser level meter, measure to vertical laser line,
The vertical detection station is equipped with pentaprism, and vertical laser line can be deflected to horizontal laser line by the pentaprism；
Horizontal detection station, the horizontal detection station measure horizontal laser line for placing measured laser level meter；
Optical collimator, the optical collimator is interior to be equipped with object lens, graticle, and the object lens are opposite with the graduation Board position,
The laser rays eye point of measured laser level meter should be with the optical alignment on the pentaprism and the horizontal detection station
The axis of instrument is located at sustained height；
Camera, the camera are used to acquire the image on the graticle；
Computer, the camera are connect with the computer, and the image that the computer is used to acquire camera divides
Analysis calculates, and obtains laser rays shooting angle.
2. laser leveler automatic checkout system according to claim 1, it is characterised in that: in the horizontal detection station
Equipped with turntable.
3. laser leveler automatic checkout system according to claim 2, it is characterised in that: the turntable and about first
Position adjusting mechanism connection.
4. laser leveler automatic checkout system according to claim 1, it is characterised in that: on the pentaprism and second
Lower position adjusting mechanism connection.
5. laser leveler automatic checkout system according to claim 1, it is characterised in that: the vertical detection station,
It is equipped with positioning pin in horizontal detection station, is cooperated with measured laser level meter bottom location hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820440304.3U CN208187381U (en) | 2018-03-29 | 2018-03-29 | Laser leveler automatic checkout system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820440304.3U CN208187381U (en) | 2018-03-29 | 2018-03-29 | Laser leveler automatic checkout system |
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| Publication Number | Publication Date |
|---|---|
| CN208187381U true CN208187381U (en) | 2018-12-04 |
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| CN201820440304.3U Active CN208187381U (en) | 2018-03-29 | 2018-03-29 | Laser leveler automatic checkout system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108332708A (en) * | 2018-03-29 | 2018-07-27 | 苏州凌创瑞地测控技术有限公司 | Laser leveler automatic checkout system and detection method |
| CN110440768A (en) * | 2019-08-20 | 2019-11-12 | 江苏帝浦拓普智能装备有限公司 | A kind of laser automatic checkout equipment for level meter test |
-
2018
- 2018-03-29 CN CN201820440304.3U patent/CN208187381U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108332708A (en) * | 2018-03-29 | 2018-07-27 | 苏州凌创瑞地测控技术有限公司 | Laser leveler automatic checkout system and detection method |
| CN108332708B (en) * | 2018-03-29 | 2023-09-05 | 苏州瑞地测控技术有限公司 | Automatic detection system and detection method for laser level meter |
| CN110440768A (en) * | 2019-08-20 | 2019-11-12 | 江苏帝浦拓普智能装备有限公司 | A kind of laser automatic checkout equipment for level meter test |
| CN110440768B (en) * | 2019-08-20 | 2023-12-01 | 江苏帝浦拓普智能装备有限公司 | A laser automated inspection equipment for spirit level test |
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Address after: 215000 Jiangsu city of Suzhou Province Economic and Technological Development Zone of Wujiang Yang Road South, Longqiao Road West Patentee after: Suzhou Ruidi measurement and Control Technology Co., Ltd Address before: 215000 Jiangsu city of Suzhou Province Economic and Technological Development Zone of Wujiang Yang Road South, Longqiao Road West Patentee before: SUZHOU LINKTRON RADSYS Co.,Ltd. |