CN201173768Y - Non-contact measurement device for measuring motion state red and hot metal outer diameter and size defect - Google Patents
Non-contact measurement device for measuring motion state red and hot metal outer diameter and size defect Download PDFInfo
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- CN201173768Y CN201173768Y CNU2008200743358U CN200820074335U CN201173768Y CN 201173768 Y CN201173768 Y CN 201173768Y CN U2008200743358 U CNU2008200743358 U CN U2008200743358U CN 200820074335 U CN200820074335 U CN 200820074335U CN 201173768 Y CN201173768 Y CN 201173768Y
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- video camera
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- measurement device
- motion state
- external diameter
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Abstract
The utility model relates to a non-contact measurement device for outside diameter and size defects of a red-hot metal in the moving state, which comprises at least two sets of basic measurement units. An optical axis of a laser of each set of basic measurement unit has an angle ranged from plus or minus 20 DEG to 80 DEG with an optical axis of a video camera, the laser jets out a laser beam, and the video camera collects signals; taking a measured object as a center, an angle between two adjacent lines of basic measurement units is 90 DEG to 180 DEG, and the output end of the video camera is connected with a computer. The non-contact measurement device has the advantages that monochromatic coherence of lasers is utilized to form a fan-shaped beam to illuminate the measured object, a face-matrix video camera with a narrow band filter is utilized to record and show space coordinate, and the computer and the programming are utilized to figure out an outside diameter size which is corresponding to a laser marked line, thereby forming a set of optics non-contact outside diameter measurement device which is flexibly arranged. Pulse signal modulation beam light emitting time and video camera synchronous photographing time are utilized to realize that an ordinary face-matrix video camera is used to realize high-definition camera measurement of a high-speed and high-temperature moving object.
Description
Technical field
The utility model belongs to the online outside diameter measuring device of a kind of photoelectricity noncontact, particularly the non-cpntact measurement device of a kind of external diameter of red heat metal of motion state and dimensional defects.
Background technology
Present known non-contact optoelectronic diameter measurer all is to adopt directional light, scanning parallel beam or expansion bundle parallel beam, and the irradiation measured object its projection size is carried out the measurement that the time is blocked in beam flying, or directional light blocks the measurement of position.This projection measurement that utilizes parallel beam more than external diameter 200mm, often will adopt complicated optics splicing measurement scheme, or heavy caliber camera lens with high costs is formed the measuring light road for the heavy caliber object.Above scheme also exists for the splicing scheme except the shortcoming bulky, that cost is high, and the blind area appears in measurement zone middle part easily, has the problem in the zone that does not detect projection.
The utility model content
The purpose of this utility model is to overcome above technological deficiency, a kind of external diameter of red heat metal of motion state and the non-cpntact measurement device of dimensional defects are provided, it is arranged flexibly, realizes realizing with general area array camera the high-resolution videographic measurment of high-speed and high-temperature moving object.
The technical solution of the utility model is: a kind of external diameter of red heat metal of motion state and the non-cpntact measurement device of dimensional defects, it is characterized in that: it comprises at least two group basic measurement unit, with the measured object is the center, angle between two adjacent groups basic measurement unit is 90-180 °, every group of basic measurement unit is made up of laser instrument and at least one video camera, laser optical axis and camera optical axis angle are ± 20 °-80 °, be fixed on the sensor base plate by support respectively, the outside is covered with protective cover, laser instrument is by protective cover laser emitting window outgoing laser beam, and video camera is by protective cover video camera view window acquired signal; The video camera output terminal connects computing machine.
Described laser instrument adopts mono-colour laser.
Described video camera is industrial low speed video camera.
Described camera lens is equipped with the narrow band pass filter with the identical wavelength of laser outward.
Described basic measurement unit input end connects pulse synchronization circuit.
The beneficial effects of the utility model are:
1, utilize the monochromatic coherence of laser to form fan beam irradiation measured object, form bright straight line laser, utilization has the area array camera record performance volume coordinate of narrow band pass filter, utilize computing machine then and calculate the outside dimension of straight line laser place correspondence, form the one group of optics noncontact outside diameter measuring device flexibly of arranging according to the program of formula draw.
2, utilize the synchronous photo opporunity of pulse signal modulation light beam fluorescent lifetime and video camera, to realize realizing the function of the high-resolution videographic measurment of high-speed and high-temperature moving object with general area array camera.
Description of drawings
Fig. 1 is the utility model list group basic measurement unit cut-away view.
Fig. 2 is the utility model list group basic measurement unit protective cover synoptic diagram.
Fig. 3 is one 3 groups of basic measurement unit of the utility model embodiment structural maps of arranging.
Fig. 4 is 22 groups of basic measurement unit of the utility model embodiment structural maps of arranging.
Embodiment
Embodiment 1: a kind of external diameter of red heat metal of motion state and the non-cpntact measurement device of dimensional defects, in order to obtain the outside dimension of whole circumference, around the measured object 3 groups of basic measurement unit of arranging, with the measured object is the center, angle between every group of basic measurement unit is 120 °, be individually fixed on the sensor stand 11, and sensor stand is installed on the measuring instrument substrate 12, every group of basic measurement unit is made up of mono-colour laser 6 and low speed industrial camera 1, this laser instrument emission fan-shaped laser beam, a video camera is placed in 45 ° of positions of beam angle therewith, laser instrument 6 is fixed on the sensor base plate 4 by support 5 and 3 respectively with video camera 1, the outside is covered with protective cover 9, and laser instrument is by protective cover laser emitting window 8 outgoing laser beams, and video camera is gathered the straight line laser optical strip image by protective cover video camera view window 10; Measured object is placed in the guide groove 7 of three groups of guide groove support columns 13 supports between the basic measurement unit, laser instrument adopts monochromatic fan-shaped laser, camera lens is installed the narrow band pass filter 2 with the identical wavelength of laser outward, if measured object hot-strip or other heaters, the interference of autoluminescence of filtering measured object and surround lighting realizes the high s/n ratio measurement.The measured object of on-line measurement also may be in high-speed motion state, the straight line laser that adopts the low speed video camera of per second tens hardwood images to photograph like this blurs, measuring error can be very big, adopts pulse synchronous signal modulating lasering beam and video camera time shutter, to obtain HD image.Pulse synchronization circuit is according to the image acquisition frequency of user's appointment, regularly send burst pulse, pulse signal is sent to the modulation input end of laser instrument and video camera simultaneously, and it is luminous to make laser instrument be lighted under pulse signal drives, and video camera is also opened the shutter images acquired when receiving pulse signal.Because pulse width is very narrow, the fluorescent lifetime of laser instrument and the time shutter of video camera are all extremely short, drop to minimum to the influence of gathering the measured object high-speed motion.For utilizing the low speed video camera, solution obtains high-precision laser graticule coordinate graphic clearly, thereby realized high-acruracy survey, adopt fan-shaped laser beam irradiation measured object, form the camber line of a high brightness on measured object surface, the two-dimensional array ccd video camera is taken the curve of this laser radiation, and such one sends out laser fan-shaped, one receives area array camera, constitute one group of basic measurement unit, the video camera output terminal connects computing machine, because the mapping relations between laser emitting plane and video camera are practised physiognomy are:
(1)
Wherein, (x, y) be the coordinate of spatial point on optical plane, (u v) is this coordinate of practising physiognomy at video camera, and A is a transition matrix, therefore face battle array image pickup signal is through the described coordinate conversion of formula (1), obtain the position coordinates of laser radiation curve in the space, pass through equation of a circle formula (2) again, calculate and to obtain the pairing outside dimension of light beam formation curve.
(x-x
0)
2+(y-y
0)
2＝r
2
(2)
Wherein, (x
0, y
0) be central coordinate of circle; R is a radius of a circle.
Embodiment 2: present embodiment adopts two groups of basic measurement unit, is the center with the measured object, and every group of basic measurement unit angle is 170 °, and other structure is identical with embodiment 1 with the course of work, at this repeated description no longer.
Claims (5)
1, a kind of external diameter of red heat metal of motion state and the non-cpntact measurement device of dimensional defects, it is characterized in that: it comprises at least two group basic measurement unit, with the measured object is the center, angle between two adjacent groups basic measurement unit is 90-180 °, every group of basic measurement unit is made up of laser instrument and at least one video camera, laser optical axis and camera optical axis angle are ± 20 °-80 °, be fixed on the sensor base plate by support respectively, the outside is covered with protective cover, laser instrument is by protective cover laser emitting window outgoing laser beam, and video camera is by protective cover video camera view window acquired signal; The video camera output terminal connects computing machine.
2, the non-cpntact measurement device of the external diameter of the red heat metal of a kind of motion state according to claim 1 and dimensional defects is characterized in that: described laser instrument adopts mono-colour laser.
3, the non-cpntact measurement device of the external diameter of the red heat metal of a kind of motion state according to claim 1 and dimensional defects is characterized in that: described video camera is industrial low speed video camera.
4, the non-cpntact measurement device of the external diameter of the red heat metal of a kind of motion state according to claim 1 and dimensional defects, it is characterized in that: described camera lens is equipped with the narrow band pass filter with the identical wavelength of laser outward.
5, the non-cpntact measurement device of the external diameter of the red heat metal of a kind of motion state according to claim 1 and dimensional defects is characterized in that: described basic measurement unit input end connects pulse synchronization circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200743358U CN201173768Y (en) | 2008-04-08 | 2008-04-08 | Non-contact measurement device for measuring motion state red and hot metal outer diameter and size defect |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200743358U CN201173768Y (en) | 2008-04-08 | 2008-04-08 | Non-contact measurement device for measuring motion state red and hot metal outer diameter and size defect |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201173768Y true CN201173768Y (en) | 2008-12-31 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008200743358U Expired - Fee Related CN201173768Y (en) | 2008-04-08 | 2008-04-08 | Non-contact measurement device for measuring motion state red and hot metal outer diameter and size defect |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101539406B (en) * | 2009-05-06 | 2011-04-20 | 北京科技大学 | Method and device for measuring shape and size of workpiece with high-temperature end and low-temperature end on line |
| CZ303909B6 (en) * | 2011-10-03 | 2013-06-19 | Ústav prístrojové techniky Akademie ved CR, v.v.i. | Method for determination of dimension and shape deviations of mechanical components and apparatus for making the same |
| CN105466356A (en) * | 2015-12-31 | 2016-04-06 | 天津市东方龙光电测控技术有限公司 | Laser graticule four-way measuring structure |
| CN106643499A (en) * | 2016-12-28 | 2017-05-10 | 易思维（天津）科技有限公司 | Structured light vision sensor oriented to multiple measurement characteristics |
| CN110044645A (en) * | 2019-05-07 | 2019-07-23 | 中国铁道科学研究院集团有限公司 | Protective cover board for contact rails condition detecting system and method |
-
2008
- 2008-04-08 CN CNU2008200743358U patent/CN201173768Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101539406B (en) * | 2009-05-06 | 2011-04-20 | 北京科技大学 | Method and device for measuring shape and size of workpiece with high-temperature end and low-temperature end on line |
| CZ303909B6 (en) * | 2011-10-03 | 2013-06-19 | Ústav prístrojové techniky Akademie ved CR, v.v.i. | Method for determination of dimension and shape deviations of mechanical components and apparatus for making the same |
| CN105466356A (en) * | 2015-12-31 | 2016-04-06 | 天津市东方龙光电测控技术有限公司 | Laser graticule four-way measuring structure |
| CN106643499A (en) * | 2016-12-28 | 2017-05-10 | 易思维（天津）科技有限公司 | Structured light vision sensor oriented to multiple measurement characteristics |
| CN110044645A (en) * | 2019-05-07 | 2019-07-23 | 中国铁道科学研究院集团有限公司 | Protective cover board for contact rails condition detecting system and method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Chen Bingsheng Assignor: Tianjin EastLoong Opto-electronic Measuring & Control Technology Co., Ltd. Contract record no.: 2010120000140 Denomination of utility model: Non-contact measurement device for measuring motion state red and hot metal outer diameter and size defect Granted publication date: 20081231 License type: Exclusive License Record date: 20101025 |
|
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Tianjin EastLoong Opto-electronic Measuring & Control Technology Co., Ltd. Assignor: Chen Bingsheng Contract record no.: 2010120000140 Denomination of utility model: Non-contact measurement device for measuring motion state red and hot metal outer diameter and size defect Granted publication date: 20081231 License type: Exclusive License Record date: 20101025 |
|
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20081231 Termination date: 20100408 |