CN108195568A - Upper beam illumination testing apparatus centering self-test and calibration method - Google Patents
Upper beam illumination testing apparatus centering self-test and calibration method Download PDFInfo
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- CN108195568A CN108195568A CN201711303183.4A CN201711303183A CN108195568A CN 108195568 A CN108195568 A CN 108195568A CN 201711303183 A CN201711303183 A CN 201711303183A CN 108195568 A CN108195568 A CN 108195568A
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- headlamp
- central point
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M11/00—Testing of optical apparatus; Testing structures by optical methods not otherwise provided for
- G01M11/02—Testing optical properties
- G01M11/06—Testing the alignment of vehicle headlight devices
- G01M11/064—Testing the alignment of vehicle headlight devices by using camera or other imaging system for the light analysis
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- Chemical & Material Sciences (AREA)
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- Length Measuring Devices By Optical Means (AREA)
- Lighting Device Outwards From Vehicle And Optical Signal (AREA)
Abstract
The present invention relates to a kind of upper beam illumination testing apparatus centering self-test and calibration methods, include the following steps：Position position of the illuminance detecting device on motorcycle track；The photoelectric imaging device on illuminance detecting device is opened, shoots locomotive headlamp image, obtains deviation post of the locomotive headlamp central point relative to photoelectric imaging device melatope；The position of luminosity probe is adjusted, luminosity probe central point is made to be located on the reference axis of locomotive headlamp, realizes the centering of luminosity probe and tested engine headlamp.The present invention shoots locomotive headlamp image using photoelectric imaging device, utilize image processing techniques, obtain deviation value of the detector central point with respect to headlamp central point, using calculating by device adjust automatically detector central point to headlamp reference axis, realize the automatic detection and automatic centering of detector position, it is not only time saving and energy saving without artificial judgment and operation, and detection accuracy is high, and centering is also more accurate.
Description
Technical field
The present invention relates to rail traffic upper beam luminance detection technologies more particularly to a kind of upper beam luminance detection to fill
Put centering self-test and calibration method.
Background technology
Rail traffic, such as locomotive, motor-car, headlamp thereon has standard requirement, needs to meet certain technical conditions.
Illuminance detecting device is exactly the equipment being detected to the light center height of headlamp, irradiation distance.Illuminance detecting device
Before being detected to locomotive headlamp, need to adjust the position of detector, the central point of detector is made to be located at the base of headlamp
On fiducial axis, referred to as centering just can guarantee that subsequent illuminance detection is compared properly and securely.The detection of moment detector position and
Adjustment is generally by emitting centering laser, by manually estimating judgement, is completed using manual setting, not only time-consuming and laborious, and
Also it is inaccurate.
Invention content
In order to solve the above-mentioned technical problem the present invention, provides a kind of upper beam illumination testing apparatus centering self-test and calibration
Method, the detection and adjustment of detector position are all automatically performed by device, not only time saving and energy saving without artificial judgment and operation,
And detection accuracy is high, and the adjustment of detector position is also more accurate.
The above-mentioned technical problem of the present invention is mainly what is be addressed by following technical proposals：Upper beam of the present invention shines
Detection device centering self-test and calibration method are spent, is included the following steps：
1. position position of the illuminance detecting device on motorcycle track；
2. opening the photoelectric imaging device on illuminance detecting device, locomotive headlamp image is shot, is shone before obtaining locomotive
Lamp central point relative to photoelectric imaging device melatope deviation post；
3. adjusting the position of luminosity probe, luminosity probe central point is made to be located on the reference axis of locomotive headlamp, realize light
The centering of degree probe and tested engine headlamp.In the technical program, photoelectric imaging device uses digital camera, digital camera
Installation site and the installation site of luminosity probe are very close to when the spacing of illuminance detecting device and tested engine is more than certain
During value, the position of digital camera and the position of luminosity probe are considered as same position, then the melatope and luminosity of digital camera
The central point of probe is considered as same point.The technical program shoots locomotive headlamp image using digital camera, is clapping figure
As in, when headlamp central point is not when on digital camera melatope, it is judged as luminosity probe and headlamp not in Shaft alignment state,
Otherwise it is judged as Shaft alignment state.Not in Shaft alignment state, by analyzing and calculating, locomotive headlamp central point is obtained relative to number
The deviant of code camera optical axis point, realizes the automatic detection of luminosity probe position, according to testing result, subsequently again to luminosity probe
It is manually adjusted or adjust automatically, realizes the centering of luminosity probe and tested engine headlamp.The technical program is time saving and energy saving,
Without artificial judgment, detection accuracy is high.
Preferably, 1. the step includes：When illuminance detecting device is located on motorcycle track, illuminance is opened
Laser range finder in detection device measures the distance between target and illuminance detecting device, target is moved along motorcycle track
It finds apart from the position of 60 meters of illuminance detecting device and marks, driver, which opens locomotive to mark, stops, and realizes illumination
Spend detection device and the horizontal location of locomotive.Horizontal location is accurate, meets the requirements of the standard.
Preferably, 1. the step includes：Tested engine class is selected in the test interface of illuminance detecting device
Type, has the locomotive headlamp altitude information with tested engine type matching in database, and illuminance detecting device is transferred automatically
The altitude information drives elevating mechanism, and control luminosity probe is elevated to specified altitude assignment position.The altitude location of luminosity probe was both square
Just it is again accurate, make subsequent centering more convenient, it is time saving and energy saving, improve efficiency.
Preferably, 3. the step is：Locomotive headlamp central point is calculated relative to photoelectric imaging device melatope
Horizontal sextant angle and distance, by calculating and handle, driving luminosity probe attitude regulation mechanism adjusts the pitch angle of luminosity probe
Degree and/or deflection angle overlap locomotive headlamp central point and photoelectric imaging device melatope, i.e. luminosity probe central point position
In on the reference axis of locomotive headlamp, the centering of luminosity probe and tested engine headlamp is realized.Not in Shaft alignment state, pass through
Analysis and calculating, obtain deviant of the locomotive headlamp central point relative to photoelectric imaging device melatope, and deviant includes machine
Chinese herbaceous peony illuminator central point realizes the automatic of luminosity probe position relative to the horizontal sextant angle and distance of photoelectric imaging device melatope
Detection further according to testing result, starts luminosity probe attitude regulation mechanism, adjusts the pitch angle and deflection angle of luminosity probe
Degree realizes the centering of luminosity probe and tested engine headlamp.In the technical program, the detection of detector position and adjustment all by
Device is automatically performed, not only time saving and energy saving without artificial judgment and operation, and detection accuracy is high, the tune of detector position
It is whole also more accurate.
Preferably, the locomotive headlamp central point is based on the horizontal sextant angle of photoelectric imaging device melatope
Calculation method is：Wherein, x0For photoelectric imaging device melatope horizontal coordinate, x is machine
The horizontal coordinate of Chinese herbaceous peony illuminator central point, f are currently used focal length, and α is filled for locomotive headlamp central point relative to photoelectronic imaging
Put the horizontal sextant angle of melatope.Counting accuracy is high, and detection is quick.
Preferably, the upper beam illumination testing apparatus centering self-test and calibration method include angle correct side
Method：Transit survey parallel light tube visual field is first used, parallel light tube is made of big view field imaging mirror and graticle, and graticle is carved with
The grid lines of even setting measures the angle on all grid intersections and vertex on graticle, i.e. theodolite directive point with theodolite
Draw the angle of the ray of the perpendicular ray of plate central point and the grid intersection and vertex of theodolite deflection scale plate；Use theodolite
After measurement obtains visual field, theodolite is removed, then with the photoelectric imaging device measuring reticle picture, measure the friendship of graticle grid
Crunode and the location of pixels on vertex find out grid intersection center position coordinates by calculating, obtain photoelectric imaging device directive
The angle of the ray of the perpendicular ray of graticle central point and the grid intersection and vertex of photoelectric imaging device deflection scale plate,
The angle of the graticle grid intersection measured with theodolite and vertex is found out by least square method and uses photoelectric imaging device
The graticle grid intersection and the correspondence of the angle on vertex measured；Finally using the correspondence obtained to before described
The central point of illuminator carries out error correction relative to the horizontal sextant angle of photoelectric imaging device melatope.It is clapped using photoelectric imaging device
Image is taken the photograph, sometimes image can deform, and causing the horizontal sextant angle angle that detection obtains, there are errors, last so as to influence
Centering.The technical program is corrected by angular error, and the level angle for making acquisition is more accurate, it is ensured that follow-up centering is more accurate
Really.
The beneficial effects of the invention are as follows：Locomotive headlamp image is shot using photoelectric imaging device, utilizes image procossing skill
Art obtains deviation value of the detector central point with respect to headlamp central point, using calculating by device adjust automatically detector
On heart point to headlamp reference axis, the automatic detection and automatic centering of detector position are realized, without artificial judgment and operation, no
But it is time saving and energy saving, and detection accuracy is high, and centering is also more accurate.
Description of the drawings
Fig. 1 is a kind of structure diagram of luminosity probe attitude regulation mechanism in the present invention.
1. pitch angle regulating mechanism in figure, 2. deflection angle regulating mechanisms, 3. detection cylinders, 4. stents.
Specific embodiment
Below with reference to the embodiments and with reference to the accompanying drawing the technical solutions of the present invention will be further described.
Embodiment：The upper beam illumination testing apparatus centering self-test of the present embodiment and calibration method, include the following steps：
1. first position of the positioning illuminance detecting device on motorcycle track：Illuminance detecting device is moved to tested machine
It on the track of vehicle traveling, and is locked, opens the laser range finder on illuminance detecting device, measure target and illuminance inspection
The distance between device is surveyed, target is moved along motorcycle track and finds apart from the position of 60 meters of illuminance detecting device and carry out mark
Note, driver, which opens locomotive to mark, stops, and realizes the horizontal location of illuminance detecting device and locomotive；
Reposition the height of luminosity probe on illuminance detecting device：It is selected in the test interface of illuminance detecting device
Tested engine type has the locomotive headlamp altitude information with tested engine type matching, illuminance detection dress in database
It puts and transfers altitude information driving elevating mechanism automatically, control luminosity probe is elevated to specified altitude assignment position；
2. opening the digital camera on illuminance detecting device, locomotive headlamp image is shot, is obtained in locomotive headlamp
Heart point relative to digital camera melatope deviation post；
3. horizontal sextant angle and distance of the locomotive headlamp central point relative to digital camera melatope are calculated, horizontal sextant angle
Computational methods are：Wherein, x0For digital camera melatope horizontal coordinate, x is locomotive
The horizontal coordinate of headlamp central point, f are currently used focal length, and α is locomotive headlamp central point relative to digital camera optical axis
The horizontal sextant angle of point；
Then angle correct is carried out to the horizontal sextant angle measured, angle correction method is：First use transit survey directional light
Pipe visual field, parallel light tube are made of big view field imaging mirror and graticle, and graticle is carved with the grid lines being uniformly arranged, and uses theodolite
Measure the perpendicular ray and warp of the angle on all grid intersections and vertex on graticle, i.e. theodolite deflection scale plate central point
The angle of the grid intersection of latitude instrument deflection scale plate and the ray on vertex；After obtaining visual field with transit survey, longitude and latitude is removed
Instrument, then with the digital camera measuring reticle picture, measure graticle grid intersection and the location of pixels on vertex, pass through meter
Grid intersection center position coordinates are found out in calculation, obtain the perpendicular ray and digital camera of digital camera deflection scale plate central point
The angle of the grid intersection of deflection scale plate and the ray on vertex finds out the graduation measured with theodolite by least square method
The angle on plate grid intersection and vertex and the graticle grid intersection measured with digital camera and the angle on vertex it is corresponding
Relationship；Finally the central point of the headlamp is pressed from both sides relative to the level of digital camera melatope using the correspondence obtained
Angle carries out error correction；
Using calculating and processing, driving luminosity probe attitude regulation mechanism, adjust luminosity probe pitch angle and/or
Deflection angle overlaps locomotive headlamp central point and digital camera optical axis point, i.e., luminosity probe central point shines before being located at locomotive
On the reference axis of lamp, the centering of luminosity probe and tested engine headlamp is realized.
Using the illuminance detecting device of the present invention, mounted on the testboard bay that can be moved to by guide rail on motorcycle track
On, digital camera including luminosity probe, above luminosity probe and the luminosity probe posture tune being connected with luminosity probe
Mechanism and elevating mechanism are saved, as shown in Figure 1, luminosity probe attitude regulation mechanism includes pitch angle regulating mechanism 1 and deflection angle
Regulating mechanism 2 is spent, luminosity probe is mounted in horizontally disposed detection cylinder 3, and the side for detecting cylinder is connected with shaft, shaft and is bowed
It faces upward angle adjusting mechanism 1 to be connected, pitch angle regulating mechanism is mounted on a stent 4, is equipped with shaft below stent, shaft and partially
Gyration regulating mechanism 2 is connected.Column on testboard bay is installed, elevating mechanism, elevating mechanism and stent are installed on column
It is connected.Two shafts can all be controlled by motor and realize rotation.During the shaft rotation being connected on stent, stent is driven to make horizontal rotation
Turn, so as to change the angle of luminosity probe horizontal direction, realize deflection angle adjustment.During the shaft rotation being connected on detection cylinder,
Detecting head is driven to make vertical rotary, so as to change the angle of luminosity probe vertical direction, realizes pitch angle adjustment.
The present invention shoots locomotive headlamp image using photoelectric imaging device, using image processing techniques, obtains detector
Central point with respect to headlamp central point deviation value, using calculate by device adjust automatically detector central point to headlamp base
On fiducial axis, the automatic detection and automatic centering of detector position are realized, it is not only time saving and energy saving without artificial judgment and operation, and
And detection accuracy is high, centering is also more accurate.
Claims (6)
1. a kind of upper beam illumination testing apparatus centering self-test and calibration method, it is characterised in that include the following steps：
1. position position of the illuminance detecting device on motorcycle track；
2. opening the photoelectric imaging device on illuminance detecting device, locomotive headlamp image is shot, is obtained in locomotive headlamp
Heart point relative to photoelectric imaging device melatope deviation post；
3. adjusting the position of luminosity probe, luminosity probe central point is made to be located on the reference axis of locomotive headlamp, realize that luminosity is visited
The centering of head and tested engine headlamp.
2. upper beam illumination testing apparatus centering self-test according to claim 1 and calibration method, it is characterised in that institute
1. the step of stating includes：When illuminance detecting device is located on motorcycle track, the Laser Measuring on illuminance detecting device is opened
Distance meter measures the distance between target and illuminance detecting device, moves target along motorcycle track and finds apart from illuminance detection
The position that 60 meter of device simultaneously marks, and driver, which opens locomotive to mark, stops, and realizes illuminance detecting device and locomotive
Horizontal location.
3. upper beam illumination testing apparatus centering self-test according to claim 1 or 2 and calibration method, it is characterised in that
1. the step includes：Tested engine type is selected in the test interface of illuminance detecting device, have in database and
The locomotive headlamp altitude information of tested engine type matching, illuminance detecting device transfer altitude information driving lifting automatically
Mechanism, control luminosity probe are elevated to specified altitude assignment position.
4. upper beam illumination testing apparatus centering self-test according to claim 1 and calibration method, it is characterised in that institute
3. the step of stating be：Calculate horizontal sextant angle and distance of the locomotive headlamp central point relative to photoelectric imaging device melatope, warp
Calculating and processing are crossed, driving luminosity probe attitude regulation mechanism adjusts the pitch angle and/or deflection angle of luminosity probe, makes
Locomotive headlamp central point and photoelectric imaging device melatope overlap, i.e., luminosity probe central point is located at the benchmark of locomotive headlamp
On axis, the centering of luminosity probe and tested engine headlamp is realized.
5. upper beam illumination testing apparatus centering self-test according to claim 4 and calibration method, it is characterised in that institute
The locomotive headlamp central point stated is relative to the computational methods of the horizontal sextant angle of photoelectric imaging device melatope：N=x-x0,Wherein, x0For photoelectric imaging device melatope horizontal coordinate, x is locomotive headlamp central point
Horizontal coordinate, f are currently used focal length, and α is that locomotive headlamp central point is pressed from both sides relative to the level of photoelectric imaging device melatope
Angle.
6. upper beam illumination testing apparatus centering self-test according to claim 4 or 5 and calibration method, it is characterised in that
Including angle correction method：First with transit survey parallel light tube visual field, parallel light tube is by big view field imaging mirror and graticle group
Into, graticle is carved with the grid lines being uniformly arranged, and the angle on all grid intersections and vertex on graticle is measured with theodolite,
That is the ray of the grid intersection and vertex of the perpendicular ray of theodolite deflection scale plate central point and theodolite deflection scale plate
Angle；After obtaining visual field with transit survey, theodolite is removed, then with the photoelectric imaging device measuring reticle picture,
Graticle grid intersection and the location of pixels on vertex are measured, grid intersection center position coordinates is found out by calculating, obtains
The perpendicular ray of photoelectric imaging device deflection scale plate central point and the grid intersection of photoelectric imaging device deflection scale plate and
The angle of the ray on vertex finds out the angle on the graticle grid intersection measured with theodolite and vertex by least square method
With the graticle grid intersection and the correspondence of the angle on vertex measured with photoelectric imaging device；Finally utilize pair obtained
The central point of the headlamp described in relation pair is answered to carry out error correction relative to the horizontal sextant angle of photoelectric imaging device melatope.
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| CN201711303183.4A CN108195568B (en) | 2017-12-08 | 2017-12-08 | Centering self-checking and calibrating method for headlamp illuminance detection device |
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| CN201711303183.4A CN108195568B (en) | 2017-12-08 | 2017-12-08 | Centering self-checking and calibrating method for headlamp illuminance detection device |
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| CN111595563A (en) * | 2020-06-10 | 2020-08-28 | 中汽院智能网联科技有限公司 | Headlamp illumination performance dynamic test method based on whole vehicle |
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