CN201803723U - Two-dimensional laser alignment detection device - Google Patents

Two-dimensional laser alignment detection device Download PDF

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Publication number
CN201803723U
CN201803723U CN201020511026XU CN201020511026U CN201803723U CN 201803723 U CN201803723 U CN 201803723U CN 201020511026X U CN201020511026X U CN 201020511026XU CN 201020511026 U CN201020511026 U CN 201020511026U CN 201803723 U CN201803723 U CN 201803723U
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CN
China
Prior art keywords
laser
pick
camera
collimation
unit
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CN201020511026XU
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Chinese (zh)
Inventor
陈唐龙
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成都国铁精工科技有限责任公司
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Priority to CN201020511026XU priority Critical patent/CN201803723U/en
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Publication of CN201803723U publication Critical patent/CN201803723U/en

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Abstract

The utility model provides a two-dimensional laser alignment detection device which mainly comprises a laser transmitting device, a laser receiving device and a data processing system connected with the laser receiving device, wherein the laser transmitting device and the laser receiving device are respectively arranged on a railway line, the laser transmitting device mainly comprises a laser transmitting car (1), as well as a power supply box (2), a transmitting alignment frame (3), a laser transmitting tube (7) and a sighting telescope (6), which are sequentially mounted on the laser transmitting car (1) from bottom to top, an optical device (8) for light gathering is further arranged at the front end of the laser transmitting tube (7), a laser power converter (4) is arranged at the other end, and the laser power converter (4) is connected with the power supply box (2). The two-dimensional laser alignment detection device can solve the difficult problem of detection of long wave irregularity of the railway line by applying the laser straightening technology in the detection of the railway line.

Description

Two-dimensional laser collimation pick-up unit

Technical field

The utility model relates to rail track aligning pick-up unit, specifically is meant a kind of two-dimensional laser collimation pick-up unit.

Background technology

The isoparametric detection of rail track lateral excursion and vertical misalignment is the precondition that tamping car played, pulled out operation, has only lateral excursion and vertical misalignment to circuit to carry out correct quantitative measurment, could finish tamping operation well.

Present known rail track offset detecting device: form by four detection dollies, a string wire, two arrow square sensors and corresponding Displaying Meter.This detection mode adopts to restrict to execute carries out the track lining operation on straight line, adopt this method to have following defective:

The first, owing to detect string of a musical instrument limited length, so the rectilinear direction after just putting in order still has curved greatly slowly the existence, promptly it can only solve the shortwave irregularity of circuit, can't solve for track long wave irregularity;

The second, this detection mode spended time is long, and inefficiency not too adapts to the frequent measurement of high-speed and high-density circuit.

The utility model content

Technical problem to be solved in the utility model provides a kind of two-dimensional laser collimation pick-up unit, and it is applied to rail track with the laser straightening technology and detects, and has solved the difficult problem that rail track long wave irregularity detects.

The utility model solves the problems of the technologies described above the technical scheme that is adopted: two-dimensional laser collimation pick-up unit, mainly form by being arranged at laser beam emitting device, laser receiver on the rail track and the data handling system that links to each other with laser receiver respectively.Laser beam emitting device and laser receiver are used to launch laser and receive laser, and data handling system is used for the laser image that receives on the laser receiver is handled.

Described laser beam emitting device is mainly by the Laser emission dolly and be installed on power supply box on the Laser emission dolly, emission levelling frame, LASER Discharge Tube and gun sight from bottom to up successively and form, also be provided with the optical devices that are used for optically focused at described LASER Discharge Tube front end, and being provided with the Laser Power Devices transducer at the other end, described Laser Power Devices transducer links to each other with described power supply box.

In order to protect the parts in the laser beam emitting device; described laser beam emitting device also includes outer cover; described outer cover is arranged at emission adjustment rack, Laser Power Devices transducer, gun sight and the LASER Discharge Tube outside, and simultaneously, the front end of described outer cover is transparent filter glass.

Described laser receiver includes the laser pick-off optical screen that is installed on the tamping car front end, and the intelligent area array camera that is used to shoot with video-corder laser pick-off optical screen epigraph, on described intelligent area array camera the intelligent camera camera lens is installed.

Receive the range of receiving of optical screen for expansion of laser light, this device also includes the servo control mechanism of control laser pick-off optical screen move left and right, described servo control mechanism includes and is used for the laser pick-off optical screen is installed on mount pad on the tamping car, and the stepper motor that links to each other with laser pick-off optical screen, mount pad respectively, on described mount pad, also be provided with some positioning threads posts.

Also be provided with camera interface on described intelligent area array camera, described data handling system links to each other with intelligent area array camera by camera interface.

Further, described data handling system also includes embedded figure piece treating apparatus, electric supply installation and data output interface thereof, and described intelligent area array camera also links to each other with electric supply installation.

Fixed cameras also is provided with on described intelligent area array camera its video camera that is installed on the tamping car is installed and fixed the hole for convenience.

To sum up, the beneficial effects of the utility model are:

(1) the utility model is applied to the rail track detection range with the laser straightening technology, makes the distance of detection longer, and degree of accuracy is higher.

(2) the utility model adopts the embedded image treating apparatus that the laser light spot on the laser pick-off optical screen of shooting with video-corder is analyzed, differentiate the coordinate position of laser light spot in laser pick-off optical screen four-quadrant, thereby reach the purpose of accurately determining circuit lateral excursion and vertical misalignment.

(3) the utility model is by being equipped with the servo control mechanism of control laser pick-off optical screen move left and right at the tamping car front end, and expansion of laser light receives the range of receiving of optical screen, thereby enlarges the inclined to one side deviation range of listening of measuring track.

(4) the utility model is simple in structure, is convenient to operation, thereby has reduced human cost, has improved work efficiency.

Description of drawings

Fig. 1 is an one-piece construction synoptic diagram of the present utility model.

Fig. 2 is the synoptic diagram that concerns of tamping car and laser measurement system, and wherein, last figure is a vertical view, and figure below is a front view.

Fig. 3 detects principle schematic for the laser side-play amount.

Fig. 4 is the structural representation of the servo control mechanism of control laser pick-off optical screen move left and right.

Fig. 5 is the compensation synoptic diagram of the initial error of zero.

Mark and corresponding parts title in the accompanying drawing: 1-Laser emission dolly; The 2-power supply box; 3-emission levelling frame; 4-Laser Power Devices transducer; The 5-outer cover; The 6-gun sight; The 7-LASER Discharge Tube; The 8-optical devices; The 9-laser beam; 10-laser light spot; 11-laser pick-off optical screen; 12-intelligent camera camera lens; The 13-video camera installs and fixes the hole; 14-intelligence area array camera; The 15-camera interface; The 16-electric supply installation; 17-embedded image treating apparatus; The 18-data output interface; The 19-mount pad; The 20-stepper motor; The 21-tamping car; 22-generating laser center; 23-receiving screen center; 24-practical laser central point.

Embodiment

Below in conjunction with embodiment and accompanying drawing, the utility model is described in further detail, but embodiment of the present utility model is not limited thereto.

Embodiment

As shown in Figure 1, this two-dimensional laser collimation pick-up unit is mainly formed by being arranged at laser beam emitting device, laser receiver on the rail track and the data handling system that links to each other with laser receiver respectively.

Described laser beam emitting device is mainly by Laser emission dolly 1 and be installed on power supply box 2 on the Laser emission dolly 1, emission levelling frame 3, LASER Discharge Tube 7 and gun sight 6 from bottom to up successively and form, wherein, power supply box 2 is installed on the Laser emission dolly 1, emission levelling frame 3 is installed on the power supply box 2, LASER Discharge Tube 7 is installed on the emission levelling frame 3, and gun sight 6 is installed on the LASER Discharge Tube 7.Also be provided with the optical devices 8 that are used for optically focused at described LASER Discharge Tube 7 front ends, be provided with Laser Power Devices transducer 4 at the other end, described Laser Power Devices transducer 4 links to each other with described power supply box 2.

Because this two-dimensional laser collimation pick-up unit is in outdoor application, so laser beam emitting device also includes outer cover 5, described outer cover 5 is arranged at emission adjustment rack 3, Laser Power Devices transducer 4, gun sight 6 and LASER Discharge Tube 7 outsides, and simultaneously, the front end of described outer cover 5 is transparent filter glass.

This device also includes the intelligent area array camera 14 that is used to shoot with video-corder laser pick-off optical screen 11 epigraphs, on described intelligent area array camera 14, intelligent camera camera lens 12 is installed, intelligent camera is to contain the Flame Image Process special DSP to finish application program, the universal industrial image processing platform that does not need computing machine, general camera then do not contain this function.Also be provided with camera interface 15 on described intelligent area array camera 14, described data handling system links to each other with intelligent area array camera 14 by camera interface 15.Described data handling system also includes embedded figure piece treating apparatus 17, electric supply installation 16 and data output interface 18 thereof, described intelligent area array camera 14 also links to each other with electric supply installation 16, data handling system does not contain electric supply installation 16, electric supply installation adopts the Chaoyang power supply, why using the Chaoyang power supply, is because the Chaoyang power supply is a stability power supply preferably general on the railway, approval; On described intelligent area array camera 14, also be provided with the video camera that it is installed on the tamping car 21 and install and fix hole 13.

When using the utility model, promote Laser emission dolly 1 to distance tamping car 21 preceding 600 meters, tamping car 21 briefly is exactly a car of reinforcing track.Adjust emission levelling frame 3, make gun sight 6 crosshairs aim at laser pick-off optical screen 11 centers, the 36V direct current that power supply box 2 is provided by Laser Power Devices transducer 4 is transformed to the 5V pulsafeeder that is suitable for LASER Discharge Tube 7, order about LASER Discharge Tube 7 emission laser 9, emitted laser 9 is become the one-wavelength laser of a beam brightness height, good directionality, concentration of energy by laser optics 8; One-wavelength laser is radiated at and forms laser light spot 10 on the laser pick-off optical screen 11 that is installed on the tamping car 21, by intelligent area array camera 14 laser light spot 10 after focusing on, intelligent camera camera lens 12 is imaged on the CCD chip of intelligent area array camera 14, carry out Flame Image Process by embedded figure piece treating apparatus 17, carry out the data analysis statistics fast, obtain the rail track geometric parameter and pass through data output interface 18 output datas as required.

As shown in Figure 2, tamping car 21 constantly moves to emitter in the course of the work, can measure orbit parameter along the line and change, and provides and makes parameter accordingly firm by ramming.

As shown in Figure 3, the detection principle of the utility model side-play amount is as follows:

Laser radiation is to receiving screen 11, and the digital camera 14 of receiving screen 11 back is taken the receiving screen image and analyzed, and extracts laser facula 10, and the side-play amount of putting is drawn with respect to receiving screen 11 centers in the center of calculating hot spot.Wherein X is the vertical offset at the center and the absolute center of receiving screen of laser facula 10, and Y is the horizontal offset at the center and the absolute center of receiving screen of laser facula 10, and this side-play amount is by receiving screen size and camera resolution decision.Laser optical screen 11 length are 320mm, and wide is 240mm.

As shown in Figure 4, on straight line, need the scope of measurement smaller; In the time of on the curve, need bigger measurement range, receiving screen can not be accomplished enough big, therefore can consider to adopt servo control mechanism, uses procedure auto-control, need not manual intervention, expansion scheme that laser shields that Here it is.Therefore, described laser receiver includes the laser pick-off optical screen 11 that is installed on tamping car 21 front ends, and the servo control mechanism of control laser pick-off optical screen 11 move left and right, described servo control mechanism includes the mount pad 19 that is used to install laser pick-off optical screen 11, and the stepper motor 20 that links to each other with laser pick-off optical screen 11, mount pad 19 respectively, stepper motor 20 makes laser pick-off optical screen 11 move left and right, simultaneously, also is provided with some positioning threads posts on described mount pad 19.

When detecting laser spot position and be about to transfinite, the programmed control servo-drive system moves to corresponding direction, make laser facula 10 all the time on receiving screen 11, calculate the position of receiving screen 11 on the Luo line post of location according to the mobile step number of stepper motor 20, the positioning threads column length is 1200mm, calculate the position of laser on receiving screen 11 again, thus tin deviation range partially after being expanded, and reach the purpose that receiving screen is expanded.

Systematic parameter of the present utility model is:

Measuring distance: 600m;

Measurement range: horizontal 1200mm, (need servo control mechanism, the measurement range during no servo control mechanism is 320mm * 240mm) to vertical 500mm;

Measuring accuracy: 1mm during 300m; 2mm during 600m;

Survey frequency: 30Hz.

The two-dimensional laser measurement mechanism is the important component part of orbital-elements measurement system, and by being arranged on the laser instrument emission collimated light beam of far-end, the signal that receives according to receiving detection device detects the smooth-going degree of track, instructs tamping car 21 operations; It adopts automatic control system and servo control mechanism, with high-precision measurement requirement, can realize two-dimensional measurement in a big way, reduces and accurately adjusts the loaded down with trivial details formality of zero-bit; The utility model function is strong, improve robotization, reduce the complicated operation degree, improve system reliability.

The laser straightening technology that adopts in the utility model, system principle is simple and reliable, exists several gordian techniquies as follows:

(1) the super scope of hot spot is measured and is adopted the large scale hot spot

Large scale hot spot benefit is that when shifting out receiving screen, hot spot is obviously less than normal, can infer actual facula position according to direction on size, geometric configuration and the place receiving screen before the hot spot, has also expanded measurement range from another point of view;

(2) the zero-bit adjustment and error of zero compensation

The receiving screen center is the zero-bit circle, diameter is 10mm, with generating laser being carried out coarse adjustment according to gun sight, finely tune according to four pilot lamp up and down again, pilot lamp is installed on the tamping car 21, by master control system control, as long as the crosshair center falls in this zone, even if zero-bit adjustment success, four pilot lamp all extinguish.In general, last fine tuning is suitable wastes time and energy the most, realize the centering of initial zero-bit efficiently, will system relax the precision that zero-bit is regulated, relax the accuracy of alignment of zero-bit, just need in the process of measuring, recompense, can reduce the degree of accuracy of zero-bit centering like this, ensure the precision of measuring simultaneously this systematic error of the error of zero.

The principle schematic that compensates for the error of zero among Fig. 5,23 positions, receiving screen center are located at the centre position of two rail among the figure, generating laser center 22 is also in the center of two one steel rails, and receiving screen center 23 is consistent from the height of rail with generating laser center 22 from the rail height, need accurately to measure, practical laser central point 24 is dropped at hot spot 10 centers actual after the assumed zero point adjustment finishes, it all is 3mm that the initial zero-bit of hot spot 10 and 23 horizontal vertical direction positions, the center of receiving screen differ, Laser emission center 22 is 600m apart from the receiving screen center, in the process that operation is advanced, spot center point M1, M2, what M3 point and initial point constituted all is similar triangles, zero-error is directly proportional according to the distance of measuring dolly road lasing light emitter, be every 100m (reading by scrambler on the car) of mistake, the real system error at two centers reduces 0.5mm.Can improve the accurate of detection by such systematic error compensation, reduce the degree of accuracy that initial zero-bit is regulated simultaneously.

(3) lens distortion calibration

There is certain distortion in camera lens, in measurement is like this, departs from primary optical axis and certain error can occur than distant positions, need proofread and correct.

In the taking into account system scheme, camera and projection screen invariant position, image-forming condition is simple and fixing, can adopt standard form that lens distortion is proofreaied and correct.Indoor finish proofread and correct and demarcate after, can be during actual the use by the look-up table correction that distorts.This method is simple, the precision height, and speed is fast, need not the site environment adjustment.

The utility model is applied to rail track with the laser straightening technology and detects, and not only solved the difficult problem that circuit long wave irregularity detects, and exploitativeness is strong, the accuracy of detection height.Adopt the automatic track and localization technical modelling of circuit track to go out the original design information of circuit, this technology is a prior art; By design information with detect the information comparative analysis, realizing automatically that the circuit track following is orientated as to make firm by ramming provides reasonable parameter data.The utility model is on reading laser spots orthogonal projection optical screen the coordinate position with digital camera, also adopted long straight laser precision ranging, differentiate the coordinate position of laser light spot in laser pick-off optical screen four-quadrant simultaneously, reach and accurately determine circuit lateral excursion and vertical misalignment purpose.

The above; it only is preferred embodiment of the present utility model; be not that the utility model is done any pro forma restriction, to any simple modification, equivalent variations that above embodiment did, all fall within the protection domain of the present utility model on every foundation technical spirit of the present utility model.

Claims (8)

1. two-dimensional laser collimation pick-up unit is characterized in that: mainly form by being arranged at laser beam emitting device, laser receiver on the rail track and the data handling system that links to each other with laser receiver respectively.
2. two-dimensional laser collimation pick-up unit according to claim 1, it is characterized in that: described laser beam emitting device is mainly by Laser emission dolly (1) and be installed on power supply box (2) on the Laser emission dolly (1), emission levelling frame (3), LASER Discharge Tube (7) and gun sight (6) from bottom to up successively and form, also be provided with the optical devices (8) that are used for optically focused at described LASER Discharge Tube (7) front end, and being provided with Laser Power Devices transducer (4) at the other end, described Laser Power Devices transducer (4) links to each other with described power supply box (2).
3. two-dimensional laser collimation pick-up unit according to claim 2, it is characterized in that: described laser beam emitting device also includes outer cover (5), described outer cover (5) is arranged at emission adjustment rack (3), Laser Power Devices transducer (4), gun sight (6) and LASER Discharge Tube (7) outside, simultaneously, the front end of described outer cover (5) is transparent filter glass.
4. according to each described two-dimensional laser collimation pick-up unit of claim 1~3, it is characterized in that: described laser receiver includes the laser pick-off optical screen (11) that is installed on tamping car (21) front end, and the intelligent area array camera (14) that is used to shoot with video-corder laser pick-off optical screen (11) epigraph, intelligent camera camera lens (12) is installed on described intelligent area array camera (14).
5. two-dimensional laser collimation pick-up unit according to claim 4, it is characterized in that: the servo control mechanism that also includes control laser pick-off optical screen (11) move left and right, described servo control mechanism includes and is used for laser pick-off optical screen (11) is installed on mount pad (19) on the tamping car (21), and the stepper motor (20) that links to each other with laser pick-off optical screen (11), mount pad (19) respectively, on described mount pad (19), also be provided with some positioning threads posts.
6. two-dimensional laser collimation pick-up unit according to claim 5, it is characterized in that: also be provided with camera interface (15) on described intelligent area array camera (14), described data handling system links to each other with intelligent area array camera (14) by camera interface (15).
7. two-dimensional laser collimation pick-up unit according to claim 6, it is characterized in that: described data handling system also includes embedded figure piece treating apparatus (17), electric supply installation (16) and data output interface (18) thereof, and described intelligent area array camera (14) also links to each other with electric supply installation (16).
8. two-dimensional laser according to claim 4 collimation pick-up unit is characterized in that: install and fix hole (13) also being provided with the video camera that it is installed on the tamping car (21) on the described intelligent area array camera (14).
CN201020511026XU 2010-08-31 2010-08-31 Two-dimensional laser alignment detection device CN201803723U (en)

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Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102304884A (en) * 2011-05-11 2012-01-04 长春理工大学 Method for detecting smoothness of high-speed railway track
CN103278094A (en) * 2013-06-25 2013-09-04 东莞理工学院 Laser position measuring device and laser position measuring method
CN103792952A (en) * 2014-01-23 2014-05-14 中国科学院长春光学精密机械与物理研究所 Fast reflector electric control system for improving pointing accuracy of laser emission system
CN104048608A (en) * 2013-03-11 2014-09-17 中国原子能科学研究院 Device for measuring pipe thermal displacement
CN104075656A (en) * 2014-06-25 2014-10-01 广东工业大学 Collimation deviation detection and elimination method for laser interferometer
CN104819692A (en) * 2015-05-14 2015-08-05 丹东市无损检测设备有限公司 Ray collimating device used for standing wave electron linear accelerator
EP2929291A1 (en) * 2012-12-05 2015-10-14 Leica Geosystems AG Laser beam horizontal trueness testing device and corresponding method
CN105403204A (en) * 2015-12-14 2016-03-16 成都迅德科技有限公司 Building vertical detection device
CN106767465A (en) * 2016-12-13 2017-05-31 东华大学 A kind of laser facula monitoring and light path automatically collimating integrated system
CN107328463A (en) * 2017-07-25 2017-11-07 中国电力科学研究院 A kind of overhead transmission line contactless vibration measuring method at a distance
CN109000614A (en) * 2018-05-03 2018-12-14 信利光电股份有限公司 A kind of 0 grade of slant detection method and detection system, readable storage medium storing program for executing of structured light projection device
CN109035824A (en) * 2018-08-01 2018-12-18 隆昌照明集团有限公司 A kind of traffic lights based on Internet of Things

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102304884A (en) * 2011-05-11 2012-01-04 长春理工大学 Method for detecting smoothness of high-speed railway track
CN102304884B (en) * 2011-05-11 2013-08-14 长春理工大学 Method for detecting smoothness of high-speed railway track
EP2929291B1 (en) * 2012-12-05 2017-08-23 Leica Geosystems AG Device testing the horizontal dispersion of a laser beam and corresponding method
EP2929291A1 (en) * 2012-12-05 2015-10-14 Leica Geosystems AG Laser beam horizontal trueness testing device and corresponding method
CN104048608A (en) * 2013-03-11 2014-09-17 中国原子能科学研究院 Device for measuring pipe thermal displacement
CN103278094A (en) * 2013-06-25 2013-09-04 东莞理工学院 Laser position measuring device and laser position measuring method
CN103792952A (en) * 2014-01-23 2014-05-14 中国科学院长春光学精密机械与物理研究所 Fast reflector electric control system for improving pointing accuracy of laser emission system
CN103792952B (en) * 2014-01-23 2016-06-15 中国科学院长春光学精密机械与物理研究所 For improving the fast mirror electric-control system of laser transmitting system pointing accuracy
CN104075656A (en) * 2014-06-25 2014-10-01 广东工业大学 Collimation deviation detection and elimination method for laser interferometer
CN104819692A (en) * 2015-05-14 2015-08-05 丹东市无损检测设备有限公司 Ray collimating device used for standing wave electron linear accelerator
CN105403204A (en) * 2015-12-14 2016-03-16 成都迅德科技有限公司 Building vertical detection device
CN106767465A (en) * 2016-12-13 2017-05-31 东华大学 A kind of laser facula monitoring and light path automatically collimating integrated system
CN107328463A (en) * 2017-07-25 2017-11-07 中国电力科学研究院 A kind of overhead transmission line contactless vibration measuring method at a distance
CN109000614A (en) * 2018-05-03 2018-12-14 信利光电股份有限公司 A kind of 0 grade of slant detection method and detection system, readable storage medium storing program for executing of structured light projection device
CN109035824A (en) * 2018-08-01 2018-12-18 隆昌照明集团有限公司 A kind of traffic lights based on Internet of Things

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Granted publication date: 20110420