CN103499355A - Laser demarcation device calibration system - Google Patents
Laser demarcation device calibration system Download PDFInfo
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- CN103499355A CN103499355A CN201310491282.5A CN201310491282A CN103499355A CN 103499355 A CN103499355 A CN 103499355A CN 201310491282 A CN201310491282 A CN 201310491282A CN 103499355 A CN103499355 A CN 103499355A
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- parallel light
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
- G01C25/00—Manufacturing, calibrating, cleaning, or repairing instruments or devices referred to in the other groups of this subclass
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
- G01C15/00—Surveying instruments or accessories not provided for in groups G01C1/00 - G01C13/00
- G01C15/002—Active optical surveying means
- G01C15/004—Reference lines, planes or sectors
Abstract
The invention provides a laser demarcation device calibration system which comprises a base, a support and eight sampling light tubes. The support is fixed on the base, the sampling light tubes are fixed on the support, each sampling light tube comprises a collimator, a digital camera, a lens positioning sleeve and a light tube sleeve, each collimator is fixed on the support through the corresponding light tube sleeve, each lens positioning sleeve is fixed on the corresponding collimator, each digital camera is connected with the corresponding lens positioning sleeve sequentially through an interface converting member and a lens sleeve, and a USB (universal serial bus) interface is arranged at the front end of each digital camera. The laser demarcation device calibration system is combined with technology of light tube small angle measuring, machine vision measuring, data fusion and the like to perform accuracy detection and calibration on a laser demarcation device, and detection results can be quantified, stored and subjected to database creating management. The laser demarcation device calibration system is convenient to assemble and disassemble, simple to calibrate and small in occupied area, damage of laser to human eyes can be greatly reduced, workload of personnel can be reduced, influences of subjective factors of human beings can be avoided, and efficiency and accuracy of detection and calibration are improved.
Description
Technical field
The present invention relates to a kind of laser level calibration system, relate in particular to a kind of laser level digitizing testing calibration system based on the machine vision metrology technology.
Background technology
Laser level is a kind of novel laser class miniaturization mapping surveying instrument, due to metering system with low cost, simple to operate, that precision is reliable and contactless, make laser level be popularized in association areas such as machining, Furniture manufacture, building decorations, market outlook are wide.It adopts the 635nm laser diode mostly, can penetrate on body surface and project visible red horizontal linear and vertical straight line at quilts such as metopes, plays the effect of thrust line, so claim that again laser level is Laser Line Marker.The level of the green laser that wavelength is 532nm occurred again in recent years adopting, visual effect is better.
Anping structure of laser level has two kinds, gravity pendulum structure and electronics Anping structure.It just can project horizontal linear and the plummet straight line that precision is very high after reaching Anping state, and horizontal linear and plummet straight line form orthogonal plane.A simple laser level only has a horizontal linear, and complicated have 4 horizontal linears and 4 front perpendicular line.Article 2, or the vertical straight line more than 2 can intersect and produce a zenith point at zenith.The vertical straight line is divided into coplanar line and orthogonal straight lines.
Laser level all can be through calibration before dispatching from the factory, and the indexs such as position degree of linearity, verticality and the zenith point of laser straight line are detected, and guarantees that it reaches state specified standards or industry unified standard.Traditional calibrating mode need to be placed corresponding calibration target plate in distance enough far away, is then that the laser straight line projects each above target plate, by closed circuit monitoring system, picture is pooled to display and judges testing result by human eye.The method floor area is large, easily because the checker is tired, judges by accident, and is difficult to measured value is quantized, and is unfavorable for management.
Summary of the invention
The problem existed for background technology, the invention provides a kind of laser level calibration system, to solve the laser level calibration problem, for relevant industries provide simply, reliable testing calibration instrument and solution.
For solving the problems of the technologies described above, concrete technical scheme of the present invention is as follows:
A kind of laser level calibration system, comprise base, support, 8 sampling light pipes; Support is fixed on base, and the sampling light pipe is fixed on support;
Each sampling light pipe includes parallel light tube 2, digital camera 3, camera lens abutment sleeve 7, light pipe cover 8, parallel light tube 2 overlaps 8 by light pipe and is fixed on support, camera lens abutment sleeve 7 is fixed on parallel light tube 2, and digital camera 3 is connected with camera lens abutment sleeve 7 by interface conversion part 27, lens sleeve 26 successively; Digital camera 3 front ends are provided with USB interface;
8 parallel light tubes that described 8 sampling light pipes comprise are respectively parallel light tube 2, parallel light tube 48, parallel light tube 49, parallel light tube 50, parallel light tube 51, parallel light tube 52, parallel light tube 53, parallel light tube 54;
Described interface conversion part 27 is fixed on lens sleeve 26 by interface conversion part dog screw 6, lens sleeve 26 is fixed on camera lens abutment sleeve 7 by lens sleeve set screw 22, camera lens abutment sleeve 7 is fixed on parallel light tube 2 by camera lens abutment sleeve set screw 23, parallel light tube 2 is finely tuned set screw 4 by parallel light tube and is fixed on light pipe cover 8, and light pipe cover 8 overlaps set bolt by light pipe and is fixed on support.
Described base is semicircle, and described support comprises fore-stock, after-poppet, side stand, and after-poppet is fixed on semicircular straight flange, and fore-stock and side stand are fixed on semicircular arc-shaped side.
Described support comprises upper boom and lower beam; In lower beam, be cavity, upper boom is arranged in cavity and moves up and down in cavity, and fixes by fixed knob and lower beam.
Described upper rod outer surface is provided with external thread, and the lower beam inside surface is provided with internal thread, and upper boom is by screw thread precession or back-out in lower beam.
During use, the digital camera of each sampling light pipe is connected to usb hub by the usb data line, and usb hub is connected to the computer USB port.The image that collection of the present invention projects the laser straight line of parallel light tube graticule, get off image taking by the digital camera that is placed on the parallel light tube back, and image is transferred to computer end by the usb data line; USB2.0 at a high speed guarantees that the image that digital camera is taken can be presented on computer screen in real time; Utilize the machine vision metrology technology to carry out classified calculating to the picture gathered according to control software (algorithm that system is write) for this reason, finally by computer, result of calculation is integrated together, and each value that will detect and the result of judgement feed back to the operator by graphoscope.The operator is kept at computer by the detected parameters of qualified product with the excel file according to the result of feedback.
Compared with prior art, the present invention has the following advantages and beneficial effect:
1, the present invention is by level, 8 the sampling light pipes that vertical, orthogonal directions sets up, gather respectively horizontal laser light straight line, plummet laser straight line and orthogonal laser straight line, sampling light pipe is wherein making the assembling instruction guarantee that easily digital camera can photograph image clearly simultaneously, and farthest reduces the impact of external environment on image.
2, the base in the present invention and support are all steel construction, and enough rigidity can be provided, and guarantee carrying out smoothly and accurately of Measurement and calibration work; Its floor area is little, and the length and width height all is controlled in 1.5 meters, easy to assembly.
3, the present invention with the time by machine vision metrology technology and corresponding software coordinate replace human eye to complete checking measurements work, and the angle measurement technique that has added parallel light tube makes the entire system miniaturization, and guaranteed that the testing calibration work of laser level can carry out by convenient and efficient exactly.
The accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
Fig. 2 is the structural representation of sampling light pipe in the present invention.
Fig. 3 is the assembly drawing of sampling light pipe in the present invention.
Fig. 4 is the parallel light tube schematic diagram.
Fig. 5 is the front elevation of camera lens abutment sleeve.
Fig. 6 is the left view of camera lens abutment sleeve.
Fig. 7 is the semisectional view of lens sleeve.
Fig. 8 is that the axle that waits of lens sleeve is surveyed view.
Fig. 9 is the sectional view of interface conversion part.
Figure 10 is that the axle that waits of interface conversion part is surveyed view.
Figure 11 is the front elevation of medium-height trestle of the present invention.
Figure 12 is assembling design sketch of the present invention.
Figure 13 is parallel light tube angle measuring principle figure.
Figure 14 is the present invention calibrating principle figure that samples.
Figure 15 is the control software flow pattern that the present invention adopts.
Figure 16 is that the present invention calibrates processing flow chart.
Figure 17 is laser rays processing flow chart of the present invention.
Wherein, 1-after-poppet, 2-parallel light tube, 3-digital camera, 4-parallel light tube fine setting set screw, 5-light pipe cover set bolt, 6-interface conversion part dog screw, 7-camera lens abutment sleeve, 8-light pipe cover, 9-side stand, 10-support gib screw, 11-camera USB interface, 12-fore-stock, 13-base, 14-laser level emplacing platform, 15-laser level, 16-parallel light tube object lens, 17-threaded hole, 18-outside surface, 19-inside surface, 20-graticule, 21-inner chamber, 22-lens sleeve set screw, 23-camera lens abutment sleeve set screw, 24-fine setting positioning screw hole, 25-fixing threaded hole, 26-lens sleeve, 27-interface conversion part, 28-threaded hole, 29-cavity, 30-internal thread, 31-lens jacket positioning spiro pit, 32-screw thread, 33-endoporus, 34-camera lens, 35-polaroid, 36-inside surface, 37-polaroid, 38-groove, 39-external thread, 40-adaptor support, 41-external thread, 42-upper boom, 43-external thread, 44-fixed knob, 45-lower beam, 46-internal thread, 47-threaded hole, 48-parallel light tube, 49-parallel light tube, 50-parallel light tube, 51-parallel light tube, 52-parallel light tube, 53-parallel light tube, 54-parallel light tube.
Embodiment
Below in conjunction with the present invention will be further described the explanation of accompanying drawing and exemplifying embodiment, but this description is only for explaining the present invention, and can not be interpreted as limitation of the present invention.
As shown in Figure 1, the present invention includes base, support, 8 sampling light pipes; Support is fixed on base, and the sampling light pipe is fixed on support;
(1) assembling of sampling light pipe
Fig. 2 is the structure of sampling light pipe, the sampling light pipe includes parallel light tube 2, digital camera 3, camera lens abutment sleeve 7, light pipe cover 8, parallel light tube 2 overlaps 8 by light pipe and is fixed on support, camera lens abutment sleeve 7 is fixed on parallel light tube 2, and digital camera 3 is connected with camera lens abutment sleeve 7 by interface conversion part 27, lens sleeve 26 successively; Digital camera 3 front ends are provided with USB interface; As shown in Fig. 4-Figure 10, preferably, interface conversion part 27 links together with digital camera by its external thread 39, the polaroid 35 of inlaying on the polaroid 37 that interface conversion part 27 is inlayed above and lens sleeve 26 cooperatively interacts and can regulate the light intensity through light, when the polarization direction of two polaroids is consistent, the light intensity maximum, when polarization direction is vertical, the light intensity minimum, can make the polarization angular separation of two polaroids change by rotating lens sleeve 26.Interface conversion part 27 can extend in the inner chamber 33 of lens sleeve 26, and be against through lens jacket positioning spiro pit 31 with four interface conversion part dog screws 6 on the groove 38 of interface conversion part 27 and position, regulate interface conversion part dog screw 6 and can make interface conversion part 27 do the movement perpendicular to optical axis in endoporus 33.Fine and closely woven screw thread 32 parts above lens sleeve 26 screw in the cavity 29 of camera lens abutment sleeve 7, and coordinate with the internal thread 30 of camera lens abutment sleeve 7, can change the image distance of camera lens 34 by rotation, be fixed by the threaded hole 28 use lens sleeve set screws 22 on camera lens abutment sleeve 7 after being adjusted to a suitable position.Camera lens abutment sleeve 7 can be embedded in the inner chamber 21 of parallel light tube 2, by camera lens abutment sleeve set screw 23, through threaded hole 17, is fixed.Camera lens abutment sleeve 7 outside surfaces and parallel light tube 2 inner chamber 21 inside surfaces are made smooth surface, can make it mutually rotate.The graticule 20 of mounting strap angle differentiation on parallel light tube 2.Parallel light tube 2 is placed in light pipe cover 8, and positions with 4 pairs of parallel light tubes 2 of eight parallel light tube fine setting set screws.
Above-mentioned structural member is assembled according to the mode of Fig. 2, and effect is as Fig. 3.Light is caught by digital camera after parallel light tube object lens 16, camera lens 34, polaroid 35, polaroid 37.Preferably, the inside surface 19 of the inside surface 36 of interface conversion part 27, the inner chamber 33 of lens sleeve 26 and parallel light tube 2 will be done frosted and process and evenly smear the low reflecting coating of black, to prevent that light from propagating in the sampling light pipe, is the picture quality that the reflection strong effect is caught.Parallel light tube fine setting set screw 4 overlap by light pipe 18 pairs of parallel light tubes 2 of outside surface that 8 fine setting positioning screw hole 24 contacts and finely tunes location.
(2) overall assembling
A fore-stock 12, two side stands 9, after-poppet 1 a use support fixed screw 10 are fixed on base 13, and base is semicircle, and after-poppet is fixed on semicircular straight flange, and fore-stock and side stand are fixed on semicircular arc-shaped side.Preferably, two side stands 9 are about fore-stock 12 symmetries.Light pipe cover 8 use light pipe box set bolts 5 are respectively fixed to fore-stock 12, side stand 9 by fixing threaded hole 25 and above after-poppet 1.Preferably, with support set screw 10, laser level support 14 is fixed on base 13 by threaded hole 47.Preferably, support 14 comprises upper boom and lower beam; In lower beam, it is cavity, upper boom is arranged in cavity and moves up and down in cavity, and fix by fixed knob and lower beam, upper rod outer surface is provided with external thread, the lower beam inside surface is provided with internal thread, and upper boom, by screw thread precession or back-out in lower beam, links together by the external thread 43 of upper boom 42 and the internal thread 46 of lower beam 45, and with the fixing position of upper boom 42 of fixed knob 44, as shown in figure 11.Laser level 15 is placed on the adaptor support 40 of upper boom 42, the external thread 41 by adaptor support 40 is connected with the threaded hole of laser level 15 bottoms.Finally the camera USB interface of every number of units word camera 3 back is connected to usb hub by the usb data line, usb hub is connected to the computer USB port by the usb data line.
The effect of having assembled is (usb data line coupling part does not draw) as shown in figure 12.Wherein, parallel light tube 2 and parallel light tube 54 have been demarcated plummet face V1; Parallel light tube 54 and parallel light tube 53 have been demarcated plummet face V2; Parallel light tube 54, parallel light tube 49 and parallel light tube 51 have been demarcated plummet face V3; Parallel light tube 48, parallel light tube 50 and parallel light tube 52 have been demarcated horizontal H.Plummet face V1 and plummet face V2 are in same plane, and plummet face V3 is perpendicular to the plane at plummet face V1 and plummet face V2 place, and horizontal H is perpendicular to the plane at plummet face V1, V2, V3 place.Parallel light tube on plummet face V1, V2, V3 is used for plummet laser rays linearity and the verticality that the calibration laser level is launched, and on horizontal H, is used for calibrated horizontal laser rays linearity.Parallel light tube can be done suitably and simplify, and the parallel light tube 49 in plummet face V3 can save with the parallel light tube 50 in horizontal H under the prerequisite that meets the calibration accuracy requirement, i.e. the present invention is applicable to the calibration platform of the assembling of 6,7 and 8 parallel light tubes.
(3) control software flow and system calibration principle
Control software flow:
1. open the specific control software that system is write for this reason, with every camera, communicate test, enter mode of operation after inerrancy;
2., if use and need to be calibrated for the first time, the center line coordinate and the line that are about to the graticule 20 of each parallel light tube 2 are demarcated with digital camera 3 spacing value.Timing signal, close laser level 15 and use evenly soft light vertical irradiation parallel light tube object lens 16, on computer screen, see clearly as the time catch image, then extract the groove on graticule 20 by digital image processing techniques, according to the coordinate of every the groove extracted, obtain calibration value;
3. open laser level, capturing visual while on computer screen, seeing laser rays draws testing result after computer calculates.Detect the qualified next laser level that changes, detect defective to again measuring after the laser level calibration;
4. will calibrate testing result and be kept at the Excel file.
Control software flow as shown in figure 15, as shown in figure 16, laser rays image treatment scheme as shown in figure 17 for the calibration flow process.
The native system calibrating principle:
Figure 13 is the schematic diagram that parallel light tube takes measurement of an angle, the laser of laser instrument emission and the angle of parallel light tube optical axis are α, the distance that looks like optical axis that projects to graticule after the refraction of parallel light tube object lens is y, subpoint is β to the line of object lens central point and the angle of optical axis, objective focal length is f:
β=arctan(y/f)
Must be intersected at the character of same point on the image space focal plane after by optical system from parallel beam:
α=β
Realized measurement of angle.
Obtain result as shown in figure 14 after the centre of laser rays and two sections samplings, calculate respectively distance Y 1, Y2, the Y3 of laser rays with respect to the graticule center line, in the time of just can obtaining laser rays and incide parallel light tube according to above-mentioned formula and angle α 1, α 2, the α 3 of optical axis.Judge according to the maximal value of the difference of α 1, α 2, α 3 whether this laser rays meets the linearity requirement.In the situation that linearity meets the demands, judge according to identical principle whether the verticality of two laser rays meets the demands.
Find that by test the present invention has reached accuracy requirement to the calibration result detection of laser level, reached ± 0.4mm/5m of linearity calibration accuracy, verticality calibration precision has reached 90 ° ± 25 °.
Specific embodiment described herein is only to the explanation for example of the present invention's spirit.Those skilled in the art can make various modifications or supplement or adopt similar mode to substitute described specific embodiment, but can't depart from spirit of the present invention or surmount the defined scope of appended claims.
Although this paper has more been used after-poppet 1, parallel light tube 2, digital camera 3, parallel light tube fine setting set screw 4, light pipe cover set bolt 5, interface conversion part dog screw 6, camera lens abutment sleeve 7, light pipe cover 8, side stand 9, support gib screw 10, camera usb 11, fore-stock 12, base 13, laser level emplacing platform 14, laser level 15, parallel light tube object lens 16, lens sleeve set screw 22, camera lens abutment sleeve set screw 23, lens sleeve 26, interface conversion part 27 terms such as grade, but do not get rid of the possibility of using other term.Using these terms is only in order to describe more easily and explain essence of the present invention; They are construed to any additional restriction is all contrary with spirit of the present invention.
Claims (5)
1. a laser level calibration system, is characterized in that: comprise base, support, 8 sampling light pipes; Support is fixed on base, and the sampling light pipe is fixed on support;
Each sampling light pipe includes parallel light tube (2), digital camera (3), camera lens abutment sleeve (7), light pipe cover (8), parallel light tube (2) is fixed on support by light pipe cover (8), it is upper that camera lens abutment sleeve (7) is fixed on parallel light tube (2), and digital camera (3) is connected with camera lens abutment sleeve (7) by interface conversion part (27), lens sleeve (26) successively; Digital camera (3) front end is provided with USB interface;
8 parallel light tubes that described 8 sampling light pipes comprise are respectively parallel light tube (2), parallel light tube (48), parallel light tube (49), parallel light tube (50), parallel light tube (51), parallel light tube (52), parallel light tube (53), parallel light tube (54);
Parallel light tube (2) and parallel light tube (54) have been demarcated plummet face V1; Parallel light tube (54) and parallel light tube (53) have been demarcated plummet face V2; Parallel light tube (54), parallel light tube (49) and parallel light tube (51) have been demarcated plummet face V3; Parallel light tube (48), parallel light tube (50) and parallel light tube (52) have been demarcated horizontal H; Plummet face V1 and plummet face V2 are in same plane, and plummet face V3 is perpendicular to the plane at plummet face V1 and plummet face V2 place, and horizontal H is perpendicular to the plane at plummet face V1, V2, V3 place.
2. a kind of laser level calibration system according to claim 1, it is characterized in that: described interface conversion part (27) is fixed on lens sleeve (26) by interface conversion part dog screw (6), lens sleeve (26) is fixed on camera lens abutment sleeve (7) by lens sleeve set screw (22), camera lens abutment sleeve (7) is fixed on parallel light tube (2) by camera lens abutment sleeve set screw (23), parallel light tube (2) is finely tuned set screw (4) by parallel light tube and is fixed on light pipe cover (8), light pipe cover (8) overlaps set bolt by light pipe and is fixed on support.
3. a kind of laser level calibration system according to claim 1 and 2, it is characterized in that: described base is for semicircle, described support comprises fore-stock, after-poppet, side stand, and after-poppet is fixed on semicircular straight flange, and fore-stock and side stand are fixed on semicircular arc-shaped side.
4. a kind of laser level calibration system according to claim 1 and 2, it is characterized in that: described support comprises upper boom and lower beam; In lower beam, be cavity, upper boom is arranged in cavity and moves up and down in cavity, and fixes by fixed knob and lower beam.
5. a kind of laser level calibration system according to claim 4, it is characterized in that: described upper rod outer surface is provided with external thread, and the lower beam inside surface is provided with internal thread, and upper boom is by screw thread precession or back-out in lower beam.
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| CN201310491282.5A CN103499355B (en) | 2013-10-18 | 2013-10-18 | A kind of laser demarcation device calibration system |
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| CN104132615A (en) * | 2014-08-01 | 2014-11-05 | 北京爱科迪通信技术股份有限公司 | Antenna calibration structure and antenna calibration method |
| CN106248063A (en) * | 2016-08-31 | 2016-12-21 | 蒋海洋 | The laser module of a kind of standardized module and Laser Line Marker |
| CN106370164A (en) * | 2016-08-31 | 2017-02-01 | 蒋海洋 | Laser marking device and movement structure thereof |
| CN106767926A (en) * | 2016-12-30 | 2017-05-31 | 北京拉特激光精密仪器有限公司 | A kind of digital calibration system and method for level |
| CN107084748A (en) * | 2017-05-24 | 2017-08-22 | 东南大学 | The laser level automatic checkout system of view-based access control model |
| CN108170096A (en) * | 2017-12-25 | 2018-06-15 | 南京鑫业诚智能科技有限公司 | A kind of method that more laser feelers synchronize detection |
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| CN110261842A (en) * | 2019-07-08 | 2019-09-20 | 北京云迹科技有限公司 | Exploring laser light installation site method of adjustment and device suitable for robot |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104132615A (en) * | 2014-08-01 | 2014-11-05 | 北京爱科迪通信技术股份有限公司 | Antenna calibration structure and antenna calibration method |
| CN106248063A (en) * | 2016-08-31 | 2016-12-21 | 蒋海洋 | The laser module of a kind of standardized module and Laser Line Marker |
| CN106370164A (en) * | 2016-08-31 | 2017-02-01 | 蒋海洋 | Laser marking device and movement structure thereof |
| CN106767926A (en) * | 2016-12-30 | 2017-05-31 | 北京拉特激光精密仪器有限公司 | A kind of digital calibration system and method for level |
| CN106767926B (en) * | 2016-12-30 | 2023-10-24 | 北京拉特激光精密仪器有限公司 | Calibration method of digital calibration system of demarcation device |
| CN107084748A (en) * | 2017-05-24 | 2017-08-22 | 东南大学 | The laser level automatic checkout system of view-based access control model |
| CN107084748B (en) * | 2017-05-24 | 2019-09-10 | 东南大学 | The laser level automatic checkout system of view-based access control model |
| CN108170096A (en) * | 2017-12-25 | 2018-06-15 | 南京鑫业诚智能科技有限公司 | A kind of method that more laser feelers synchronize detection |
| CN108170096B (en) * | 2017-12-25 | 2019-11-22 | 南京鑫业诚智能科技有限公司 | A kind of method that more laser feelers synchronize detection |
| CN108362306A (en) * | 2018-01-04 | 2018-08-03 | 常州维尔曼光电仪器有限公司 | A kind of frame for line marking instrument detection workbench |
| CN110261842A (en) * | 2019-07-08 | 2019-09-20 | 北京云迹科技有限公司 | Exploring laser light installation site method of adjustment and device suitable for robot |
| CN110261842B (en) * | 2019-07-08 | 2021-09-14 | 北京云迹科技有限公司 | Detection laser installation position adjusting method and device suitable for robot |
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