CN205664783U - Vision measuring device based on two telecentric mirror heads - Google Patents
Vision measuring device based on two telecentric mirror heads Download PDFInfo
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- CN205664783U CN205664783U CN201620529761.0U CN201620529761U CN205664783U CN 205664783 U CN205664783 U CN 205664783U CN 201620529761 U CN201620529761 U CN 201620529761U CN 205664783 U CN205664783 U CN 205664783U
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- camera lens
- doubly telecentric
- light source
- measurement device
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Abstract
The utility model discloses a vision measuring device based on two telecentric mirror heads, the on -line screen storage device comprises a base, install the stand on the base perpendicularly, from the bottom up installs light source support frame, elevating system and camera lens support frame in proper order on the front of stand, and collimated light source is vertical upwards to be installed on the light source support frame, and cargo platform installs perpendicularly on elevating system, and two telecentric mirror heads are vertical to be installed downwards on the camera lens support frame, and collimated light source is coaxial with two telecentric mirror heads, still installs the camera at the eyepiece end of two telecentric mirror heads, at two telecentric mirror head objective end installation ring illuminator, still set up veneer computer and control panel through serial port connection on the back of stand, the veneer computer still links to each other with the camera through the ethernet. The utility model adopts the above structure, conveniently seek the figure edge, the object profile projection that awaits measuring is clear, can also proofread and correct the figure, avoids the distortion, especially adapted industrial production scene and laboratory to spare parts such as small, special -shaped, flexibility fast, high precision measurement.
Description
Technical field
This utility model relates to vision measurement field, in particular it relates to a kind of vision measurement based on doubly telecentric camera lens dress
Put.
Background technology
At present product physical dimension is measured the traditional contact type measurement instrument of main employing (ruler, slide gauge, thousand
Point chi, special measurement instrument etc.) or tool microscope carry out.Traditional contact type measurement instrument not only seems that precision is low, operates
Trouble, measurement result is affected by the precision of instrument own, is needed periodic calibration.Use manual measurement, the mode of artificial reading simultaneously, its
Result is affected relatively big by external condition, and even environmental change all can produce Errors Catastrophic, also cannot measure flexible article, be unsatisfactory for
The requirement that manufacturing industry is the highest to machining accuracy.Although tool microscope certainty of measurement is high, but due to bulky, visual field is narrow
Narrow, the time of measuring is very long, is not suitable for large-scale product test.
The most there is at present the measurement apparatus of some view-based access control model measurement count, but itself otherwise bulky be unfavorable for
Mobile, be only suitable to laboratory measurement and use；Non-integral equipment, is unfavorable for that plant produced line uses；Visual field is more
Narrow, measure inconvenience.Market demand is a kind of is easy to height mobile, that be applicable to plant produced line and laboratory, can quickly measure
Accuracy measuring device.
Utility model content
This utility model overcomes the deficiencies in the prior art, it is provided that a kind of vision measurement device based on doubly telecentric camera lens,
This device is convenient finds pattern edge, and object under test outline projection is clear, additionally it is possible to be corrected figure, it is to avoid distortion, non-
Often it is suitable for industrial site and laboratory quick, the high-acruracy survey to the parts such as small, special-shaped, flexible.
The technical scheme in the invention for solving the above technical problem is: a kind of vision measurement based on doubly telecentric camera lens
Device, including base, right angle setting column on described base, the front of column is installed light source the most successively and supports
Frame, elevating mechanism and camera lens bracing frame, source of parallel light is arranged on light source bracing frame straight up, and article carrying platform is vertically mounted on
On elevating mechanism, doubly telecentric camera lens is arranged on camera lens bracing frame straight down, and source of parallel light and doubly telecentric camera lens are coaxial, double
The eyepiece end of telecentric lens also installs video camera, installs annular light source in doubly telecentric camera lens objective end；On the back side of column also
Arranging the single-borad computer and panel connected by serial ports, single-borad computer is connected with video camera also by Ethernet.
Normal optical radiographic measurement instrument before measurements, needs to carry out focus operations, with to part blur-free imaging to be measured,
This device selects telecentric optics camera lens to treat survey part imaging, utilizes the imaging characteristic of telecentric lens, can be at certain image-forming range
In the range of avoid focusing, and perspective distortion and the measured object situation about blocking that produces due to perspective distortion can be eliminated without shadow
Ring certainty of measurement, shorten the time before measurement.Single-borad computer and panel are set simultaneously, permissible for the image gathered
Use figure adjustment algorithm, it is possible to will include trapezoidal distortion, the degree of nonlinear distortion drops to less than 1%, fully ensures that collection figure
The verity of picture.In order to pursue higher certainty of measurement, additionally use green LED source of parallel light when video camera is taken pictures as instrument
The lower source of parallel light of device, uses green light source can improve the comparison diagram of imaging, more convenient looks for pattern edge.Tradition diffused light
Source sends diffused ray, and this causes the outline projection of object under test to be most likely subject to the phagocytosis of diffused ray, causes image fault
Consequence, this device use source of parallel light, its source of parallel light has fully ensured that the verity of the outline projection of object under test, operation
Personnel are without considering that edge projection can be impacted by too strong light-source brightness.
According to the size etc. in video camera imaging setting, the parameter of video camera CCD element, camera lens amplification and frame for movement
Parameter, can calculate the size of each imaging pixel.By graphics process, parser, can each to testee
Plant size to measure.
This device additionally uses Sub-pixel Technique, a pixel is divided into several parts, breaches hardware facility and optical system
The precision brought limits, and improves the precision of measurement.
Preferably, described light source bracing frame is in the same plane with camera lens bracing frame, source of parallel light and doubly telecentric camera lens
Coaxially.
Preferably, described article carrying platform is positioned at horizontal plane, and vertical with doubly telecentric camera lens and source of parallel light axis.Should
Arrange ensure that when object is placed on object stage doubly telecentric camera lens and source of parallel light can from object directly vertically below and
Object is irradiated by normal position, it is ensured that image outline clear, improves final certainty of measurement.
Preferably, described article carrying platform can adjust level height by elevating mechanism, is provided on elevating mechanism
Adjust the elevating mechanism handwheel of level height.Article carrying platform uses elevating mechanism to adjust height, adjusts simple and convenient.
Preferably, also including being coated on the metal shell outside this vision measurement device, metal shell includes outer housing, behaviour
Make panel, lower outer housing and back shroud, upper outer housing front on liquid crystal display screen is also installed, liquid crystal display screen pass through LVDS interface and veneer
Computer connects.
Preferably, the back side of described column also setting up power supply and hard disk, power supply is simultaneously connected with panel and single-borad computer.
Preferably, described base also sets up pulley.Convenient this device of carrying.
To sum up, the beneficial effects of the utility model are:
1, this device selects telecentric optics camera lens to treat survey part imaging, utilizes the imaging characteristic of telecentric lens, can be necessarily
Image-forming range in the range of avoid focusing, and perspective distortion and the feelings blocked of measured object produced due to perspective distortion can be eliminated
Condition, without affecting certainty of measurement, shortens the time before measurement.
2, this device arranges single-borad computer and panel, can use figure adjustment algorithm for the image gathered, it is possible to
To include trapezoidal distortion, the degree of nonlinear distortion drops to less than 1%, fully ensures that the verity gathering image.
3, additionally use the green LED source of parallel light lower source of parallel light as instrument when video camera is taken pictures, use green
Light source can improve the comparison diagram of imaging, more convenient looks for pattern edge.
4, this device uses source of parallel light, and its source of parallel light has fully ensured that the verity of the outline projection of object under test,
Operator, without considering that edge projection can be impacted by too strong light-source brightness, are especially suitable for industrial site and experiment
The room quick, high-acruracy survey to the parts such as small, special-shaped, flexible.
Accompanying drawing explanation
Fig. 1 is the structural representation of this utility model side；
Fig. 2 is the structural representation of this utility model another side；
Fig. 3 is the structural representation in this utility model front.
Labelling and corresponding parts title in accompanying drawing: 1, base；2, column；3, elevating mechanism；4, source of parallel light；5, light
Source bracing frame；6, article carrying platform；7, annular light source；8, camera lens bracing frame；9, doubly telecentric camera lens；10, video camera；11, liquid crystal display screen；
12, power supply；13, single-borad computer；14, hard disk；15, panel；16, elevating mechanism handwheel.
Detailed description of the invention
Below in conjunction with embodiment and accompanying drawing, this utility model is made detailed description further, but of the present utility model
Embodiment is not limited to this.
Embodiment 1:
As Figure 1-3, this utility model includes the base 1 that ironcasting is made, right angle setting ironware system on described base 1
The column 2 become, installs light source bracing frame 5, elevating mechanism 3 and camera lens bracing frame 8 on the front of column 2 the most successively,
Source of parallel light 4 is arranged on light source bracing frame 5 straight up, and article carrying platform 6 is vertically mounted on elevating mechanism 3, doubly telecentric mirror
9 are arranged on camera lens bracing frame 8 straight down, model be the source of parallel light 4 of TC1296 and doubly telecentric camera lens 9 coaxial, double
The eyepiece end of telecentric lens 9 also installs video camera 10, installs annular light source 7 in doubly telecentric camera lens 9 objective end；The back of the body at column 2
Also setting up on face and connect, by RS232 serial ports, single-borad computer 13 and the panel 15 that model is MIO-5290, image passes through network
Interface reaches single-borad computer, and single-borad computer 13 is connected with the video camera 10 that model is BAS1205 also by Ethernet, and panel can
Carry out operating control by measuring button, measure button and be installed on body fuselage guidance panel.
After measurement apparatus enters mode of operation, testee is positioned on article carrying platform parallel plate, presses measurement
Button, source of parallel light opens, and collimated light beam passes through object stage parallel plate, from below testee is carried out uniform irradiation,
Use annular light source from top, testee to be illuminated between camera lens and object stage simultaneously.Source of parallel light and annular light source
Uniform-illumination, it is possible to for gathering the illumination that object under test upper surface image provides sufficient so that testee is uniformly illuminated.According to
After bright regulation completes, measurement apparatus controls high-definition camera and takes a picture testee through telecentric lens, forms height
Resolution chart picture, and this image is delivered to single-borad computer carry out graphical analysis, calculate and measure, obtain a result and show.
Normal optical radiographic measurement instrument before measurements, needs to carry out focus operations, with to part blur-free imaging to be measured,
This device selects telecentric optics camera lens to treat survey part imaging, utilizes the imaging characteristic of telecentric lens, can be at certain image-forming range
In the range of avoid focusing, and perspective distortion and the measured object situation about blocking that produces due to perspective distortion can be eliminated without shadow
Ring certainty of measurement, shorten the time before measurement.Single-borad computer and panel are set simultaneously, permissible for the image gathered
Use figure adjustment algorithm, it is possible to will include trapezoidal distortion, the degree of nonlinear distortion drops to less than 1%, fully ensures that collection figure
The verity of picture.In order to pursue higher certainty of measurement, additionally use green LED source of parallel light when video camera is taken pictures as instrument
The lower source of parallel light of device, uses green light source can improve the comparison diagram of imaging, more convenient looks for pattern edge.Tradition diffused light
Source sends diffused ray, and this causes the outline projection of object under test to be most likely subject to the phagocytosis of diffused ray, causes image fault
Consequence, this device use source of parallel light, its source of parallel light has fully ensured that the verity of the outline projection of object under test, operation
Personnel, without considering that edge projection can be impacted by too strong light-source brightness, are especially suitable for industrial site and laboratory pair
Quick, the high-acruracy survey of the parts such as small, special-shaped, flexible.
According to the size etc. in video camera imaging setting, the parameter of video camera CCD element, camera lens amplification and frame for movement
Parameter, can calculate the size of each imaging pixel.By graphics process, parser, can each to testee
Plant size to measure.
This device additionally uses Sub-pixel Technique, a pixel is divided into several parts, breaches hardware facility and optical system
The precision brought limits, and improves the precision of measurement.
Embodiment 2:
The present embodiment is preferably as follows on the basis of embodiment 1: light source bracing frame 5 and camera lens bracing frame 8 are in same flat
On face, source of parallel light 4 and doubly telecentric camera lens 9 are coaxial.
Article carrying platform 6 is positioned at horizontal plane, is arranged on the surface of guidance panel, and with doubly telecentric camera lens 9 and parallel
Light source 4 axis is vertical.This setting ensure that doubly telecentric camera lens and source of parallel light can be from things when object is placed on object stage
Directly vertically below being irradiated object with normal position of body, it is ensured that image outline clear, improves final measurement essence
Degree.
Article carrying platform 6 can adjust level height by elevating mechanism 3, is provided for adjustment level on elevating mechanism 3
The elevating mechanism handwheel 16 of height.Article carrying platform uses elevating mechanism to adjust height, adjusts simple and convenient.
Also include being coated on the metal shell outside this vision measurement device, metal shell include outer housing, guidance panel,
Lower outer housing and back shroud, upper outer housing covers above vision measurement device, and lower outer housing covers below vision measurement device, rear cover body cover
Live the vision measurement device back side, the front of upper outer housing is also installed the LCD liquid crystal display screen 11 that model is G104XI-L04, liquid crystal display screen
11 are connected with single-borad computer 13 by LVDS interface.For showing measurement result.
Also setting up power supply 12 and hard disk 14 on the back side of column 2, power supply 12 is simultaneously connected with panel 15 and single-borad computer 13.
Pulley is also set up on base 1.Convenient this device of carrying.
The above, be only preferred embodiment of the present utility model, and this utility model not does any pro forma limit
System, every according to technical spirit of the present utility model, above example is made any simple modification, equivalent variations, each fall within
Within protection domain of the present utility model.
Claims (7)
1. a vision measurement device based on doubly telecentric camera lens, including base (1), it is characterised in that described base (1) is upper to hang down
Column (2) is directly installed, the front of column (2) is installed light source bracing frame (5), elevating mechanism (3) and mirror the most successively
Head support (8), source of parallel light (4) is arranged on light source bracing frame (5) straight up, and article carrying platform (6) is vertically mounted on liter
On descending mechanism (3), doubly telecentric camera lens (9) is arranged on camera lens bracing frame (8) straight down, source of parallel light (4) and doubly telecentric mirror
Head (9) is coaxial, and the eyepiece end at doubly telecentric camera lens (9) also installs video camera (10), in doubly telecentric camera lens (9) objective end mounting ring
Shape light source (7)；The back side of column (2) is also set up the single-borad computer (13) and panel (15), veneer connected by serial ports
Computer (13) is connected with video camera (10) also by Ethernet.
A kind of vision measurement device based on doubly telecentric camera lens the most according to claim 1, it is characterised in that described light source
Bracing frame (5) is in the same plane with camera lens bracing frame (8), and source of parallel light (4) and doubly telecentric camera lens (9) are coaxial.
A kind of vision measurement device based on doubly telecentric camera lens the most according to claim 1, it is characterised in that described loading
Platform (6) is positioned at horizontal plane, and vertical with doubly telecentric camera lens (9) and source of parallel light (4) axis.
4. according to a kind of based on doubly telecentric camera lens the vision measurement device described in claim 1 or 3, it is characterised in that described
Article carrying platform (6) can pass through elevating mechanism (3) and adjust level height, is provided for adjustment level high on elevating mechanism (3)
The elevating mechanism handwheel (16) of degree.
A kind of vision measurement device based on doubly telecentric camera lens the most according to claim 1, it is characterised in that also include
Overlaying on the metal shell outside this vision measurement device, metal shell includes outer housing, guidance panel, lower outer housing and back shroud,
Also installing liquid crystal display screen (11) on the front of upper outer housing, liquid crystal display screen (11) is connected with single-borad computer (13) by LVDS interface.
A kind of vision measurement device based on doubly telecentric camera lens, it is characterised in that described
Also setting up power supply (12) and hard disk (14) on the back side of column (2), power supply (12) is simultaneously connected with panel (15) and single-borad computer
(13).
A kind of vision measurement device based on doubly telecentric camera lens the most according to claim 1, it is characterised in that described base
(1) pulley is also set up on.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620529761.0U CN205664783U (en) | 2016-06-03 | 2016-06-03 | Vision measuring device based on two telecentric mirror heads |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620529761.0U CN205664783U (en) | 2016-06-03 | 2016-06-03 | Vision measuring device based on two telecentric mirror heads |
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| Publication Number | Publication Date |
|---|---|
| CN205664783U true CN205664783U (en) | 2016-10-26 |
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ID=57159341
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620529761.0U Expired - Fee Related CN205664783U (en) | 2016-06-03 | 2016-06-03 | Vision measuring device based on two telecentric mirror heads |
Country Status (1)
| Country | Link |
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| CN (1) | CN205664783U (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107830805A (en) * | 2017-12-15 | 2018-03-23 | 南京鑫业诚机器人科技有限公司 | A kind of optical texture of large scale product quick detection |
| CN108154537A (en) * | 2017-12-25 | 2018-06-12 | 南京鑫业诚智能科技有限公司 | A kind of bearing calibration of big visual field rapid detection system |
| CN108592796A (en) * | 2018-08-03 | 2018-09-28 | 西安远心光学系统有限公司 | Big visual field high-precision intelligent optical measuring instrument and its measurement method |
| CN109269951A (en) * | 2018-09-06 | 2019-01-25 | 山西智卓电气有限公司 | Floating tail-coal ash content, concentration, coarse granule detection method of content based on image |
| CN109506571A (en) * | 2018-10-26 | 2019-03-22 | 北京航天控制仪器研究所 | A kind of part dimension measurement method in place and device |
| CN109840915A (en) * | 2019-03-22 | 2019-06-04 | 青岛鑫慧铭视觉科技有限公司 | The liquid-transfering gun pipette tips quality detecting system and detection method of view-based access control model principle |
| CN113311559A (en) * | 2021-06-21 | 2021-08-27 | 北京计算机技术及应用研究所 | Mobile fixing device for large-mass imaging system |
-
2016
- 2016-06-03 CN CN201620529761.0U patent/CN205664783U/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107830805A (en) * | 2017-12-15 | 2018-03-23 | 南京鑫业诚机器人科技有限公司 | A kind of optical texture of large scale product quick detection |
| CN108154537A (en) * | 2017-12-25 | 2018-06-12 | 南京鑫业诚智能科技有限公司 | A kind of bearing calibration of big visual field rapid detection system |
| CN108154537B (en) * | 2017-12-25 | 2020-09-29 | 南京鑫业诚智能科技有限公司 | Correction method of large-visual-field rapid detection system |
| CN108592796A (en) * | 2018-08-03 | 2018-09-28 | 西安远心光学系统有限公司 | Big visual field high-precision intelligent optical measuring instrument and its measurement method |
| CN109269951A (en) * | 2018-09-06 | 2019-01-25 | 山西智卓电气有限公司 | Floating tail-coal ash content, concentration, coarse granule detection method of content based on image |
| CN109506571A (en) * | 2018-10-26 | 2019-03-22 | 北京航天控制仪器研究所 | A kind of part dimension measurement method in place and device |
| CN109840915A (en) * | 2019-03-22 | 2019-06-04 | 青岛鑫慧铭视觉科技有限公司 | The liquid-transfering gun pipette tips quality detecting system and detection method of view-based access control model principle |
| CN113311559A (en) * | 2021-06-21 | 2021-08-27 | 北京计算机技术及应用研究所 | Mobile fixing device for large-mass imaging system |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20161026 Termination date: 20180603 |
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| CF01 | Termination of patent right due to non-payment of annual fee |