CN110375708A - A kind of three-dimensional perspective measuring system - Google Patents
A kind of three-dimensional perspective measuring system Download PDFInfo
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- CN110375708A CN110375708A CN201910754090.6A CN201910754090A CN110375708A CN 110375708 A CN110375708 A CN 110375708A CN 201910754090 A CN201910754090 A CN 201910754090A CN 110375708 A CN110375708 A CN 110375708A
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- angle
- prism
- dimensional perspective
- measuring system
- angle prism
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
- G01C1/00—Measuring angles
Abstract
Three-dimensional perspective measuring system provided by the invention, it include: measurement end and target side, the target side includes right-angle prism, the measurement end includes white light source, condenser, graticle, first Amici prism, second Amici prism, first narrow band filter, second narrow band filter, collimator objective, first planar array detector and the second planar array detector, the present invention utilizes the different reflectings surface of right-angle prism, inclined-plane characterizes orientation and pitch angle variation, two right-angle surfaces characterize the variation of roll corner, three-dimensional perspective can be achieved to measure simultaneously, angle measurement accuracy with higher, it is simple and compact for structure, it is low in cost, it is non-maintaining, it is easy to use, system has good future in engineering applications.
Description
Technical field
The present invention relates to the technical field of modern high-acruracy survey, in particular to a kind of three-dimensional perspective measuring system.
Background technique
Angle is to measure angular unit, and angular measure is the important component of geometric sense metering.With production and
High-tech development, the requirement to angular measure is increasing, and angle measurement technique and its measuring accuracy are also in the continuous improvement.It is existing
Stage angle-measuring method is broadly divided into mechanical measurement, electronic surveying, electromagnetic measurement and photoelectric measurement.Wherein photoelectric measurement is believed using light
Number it is converted into electric signal, information is received by computer and carries out data processing, completes online to have with automatic measurement, this method
The feature of non-contact, high accuracy and high sensitivity.In addition, the development of stable laser light source make industry spot measurement become can
Can, thus make photoelectricity angle-measuring method using more and more extensive, become one of the main means of modern high-acruracy survey.
In engineer application, the measuring device of some precisions or the spatial position of reference device are different, and connect these
Equipment is also impossible to be absolute rigid body, even if coordinate basis can be matched to certain precision during fabrication, in practical applications,
The unstability and human factor of environment will lead to malformation, and there is three-dimensional small angle variations between each equipment.With boat
For its surveying vessel, main optical measuring device, radar etc. are required to the geodetic coordinates in the Horizon geographical north endured using INS Platform as base
Standard, when at sea working, due to the presence (such as stormy waves, temperature, time aging) of external disturbance, hull will generate three-dimensional
Deformation angle (longitudinal flexure, lateral delfection, torsion angle).These three deformation angles make measuring device directly use inertial navigation system
Measurement error can be generated when the benchmark of output, in order to carry out error correction, obtained accurate measurement result, needed three to hull
It ties up angular distortion and carries out real-time measurement.
Autocollimator is a kind of global angle measuring instrument, and system is simple, measurement accuracy is high, technology maturation, is widely applied
In each industrial department and research work.However autocollimator can only obtain orientation and pitch angle, cannot achieve torsion angular measurement, because
This how high-acruracy survey torsion angle, and may be implemented 3 D deformation angle and meanwhile measurement be a focus.It mentions both at home and abroad at present
The method of torsion angular measurement out has very much, can be summarized as several classes such as interferometry, Polarization Method and geometrical optics approach.
It is for the representative scheme of relative deformation angular measurement between multiple pedestals on straight line in current engineer application
Measuring system for deformation of ship on instrumented tracking and telemetry ship realizes the measurement of orientation and pitch angle by alignment method, by big
Steel pipe method realizes the measurement of horizontal torsional angle.This method measurement accuracy is high, but system complex, and occupied space is big, returns installation maintenance
Many inconvenience are brought, without being normally applied type.And for the three-dimension altitude angle of two pedestals, measuring system is not at present then simultaneously
Seeing has mature solution.
Summary of the invention
Have in view of that, it is necessary in view of the defects existing in the prior art, provide that a kind of angle measurement accuracy is high and structure is simply tight
The three-dimensional perspective measuring system gathered.
To achieve the above object, the present invention adopts the following technical solutions:
A kind of three-dimensional perspective measuring system, comprising: measurement end and target side, the target side includes right-angle prism, described
Measurement end includes white light source, condenser, graticle, the first Amici prism, the second Amici prism, the first narrow band filter,
Two narrow band filters, collimator objective, the first planar array detector and the second planar array detector；The inclined-plane of the right-angle prism is to incidence
The green light of short-wave band carry out reflection and the feux rouges of incident long-wave band transmitted, second planar array detector only allows
Incident feux rouges penetrates, in which:
The bright graticle positioned at the condenser focal plane of illumination that the white light source issues, then through the collimator objective
Become collimated light beam after collimation, the inclined-plane of right-angle prism described in the parallel beam incident:
Wherein, the green light of short-wave band is after the slant reflection of the right-angle prism again successively through the collimator objective, described
It is received and carries out at subsequent image by first planar array detector after first Amici prism and first narrow band filter
Reason, obtains the information of corresponding orientation and pitch angle by the change in displacement of the graticle picture；
Wherein, the inclined-plane of right-angle prism described in the red transmission of long-wave band, and two right-angle surfaces through the right-angle prism are anti-
Again successively through the collimator objective, first Amici prism, second Amici prism and second narrow-band-filter after penetrating
Subsequent image procossing is received and carries out by second area array CCD after piece, when the right-angle prism is rotated around optical axis z-axis
When, cause the rotation of reflection light, so that the picture of the beam-splitter rotates around x axis, so as to cause in the second face battle array detection
The variation of slope on device, to establish right-angle prism quantifying between optical axis rotation angle and the slope variation of above-mentioned graticle picture
Relation acquisition roll angle.
In some preferred embodiments, the measurement end and target side are individually positioned in the first pedestal and the second pedestal
On.
In some preferred embodiments, the white light source is LED white light source.
In some preferred embodiments, right-angle prism inclined-plane subrane is coated with optical film, wavelength 620-800nm's
Mean transmissivity reaches 90%, and the average reflectance of wavelength 470-590nm reaches 95%.
In some preferred embodiments, the optical film can make the mean transmissivity of wavelength 620-800nm reach 90%
More than, the average reflectance of wavelength 470-590nm reaches 95% or more.
In some preferred embodiments, the central wavelength of first narrow band filter is 532nm, second narrowband
The central wavelength of optical filter is 632.8nm.
In some preferred embodiments, the graticle is cross-graduation plate.
The present invention by adopting the above technical scheme the advantages of be:
Three-dimensional perspective measuring system provided by the invention, including measurement end and target side, the target side include right-angled edge
Mirror, the measurement end include white light source, condenser, graticle, the first Amici prism, the second Amici prism, the filter of the first narrowband
Mating plate, the second narrow band filter, collimator objective, the first planar array detector and the second planar array detector, the white light source issue
The bright graticle positioned at the condenser focal plane of illumination, then through the collimator objective collimation after become collimated light beam, it is described
The inclined-plane of right-angle prism described in parallel beam incident: the green light of short-wave band successively passes through again after the slant reflection of the right-angle prism
It is received simultaneously after the collimator objective, first Amici prism and first narrow band filter by first planar array detector
Subsequent image procossing is carried out, the information of corresponding orientation and pitch angle is obtained by the change in displacement of the graticle picture；It is long
The inclined-plane of right-angle prism described in the red transmission of wave band, and again successively through described after the reflection of two right-angle surfaces of the right-angle prism
By second face after collimator objective, first Amici prism, second Amici prism and second narrow band filter
Battle array CCD receives and carries out subsequent image procossing, when the right-angle prism is rotated around optical axis z-axis, causes reflection light
Rotation so that the picture of the beam-splitter rotates around x axis, so as to cause the variation of the slope on second planar array detector,
Roll angle is obtained to establish quantitative relationship of the right-angle prism between optical axis rotation angle and the slope variation of above-mentioned graticle picture,
Three-dimensional perspective measuring system provided by the invention, using the different reflectings surface of right-angle prism, inclined-plane characterizes orientation and pitch angle becomes
Change, two right-angle surfaces (i.e. crest line) characterize the variation of roll corner, it can be achieved that three-dimensional perspective measures simultaneously, and angle measurement with higher is smart
Degree, simple and compact for structure, low in cost, non-maintaining, easy to use, system has good future in engineering applications.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention for those of ordinary skill in the art without creative efforts, can be with
Other attached drawings are obtained according to these attached drawings.
Fig. 1 is the stereoscopic schematic diagram of three-dimensional perspective measuring system provided in an embodiment of the present invention；
Fig. 2 is the structural schematic diagram of three-dimensional perspective measuring system provided in an embodiment of the present invention；
Fig. 3 is the displacement for the cross-graduation plate picture that the present invention shows that embodiment provides, slope variation schematic diagram.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts all other
Embodiment shall fall within the protection scope of the present invention.
Fig. 1 and Fig. 2 is please referred to, is a kind of structural schematic diagram of three-dimensional perspective measuring system provided in an embodiment of the present invention,
It include: measurement end 110 and target side 120.
In some preferred embodiments, the measurement end 110 and target side 120 are individually positioned in the first pedestal A and
On two pedestal B, the three-dimension altitude angle that pedestal 2 is equivalent to pedestal 1 can be measured.
Specifically, 3 d pose angular measurement coordinate system F is established, wherein x, z constitute horizontal plane, and z-axis is optical axis, coordinate
Be F be right-handed coordinate system.
Referring again to Fig. 2, the measurement end 110 includes white light source 111, condenser 112, the light splitting of graticle 113, first
Prism 114, the second Amici prism 115, the first narrow band filter 116, the second narrow band filter 117, collimator objective 118, first
Planar array detector 119 and the second planar array detector 210；The target side 120 includes right-angle prism 121, the right-angle prism 121
Inclined-plane reflection is carried out to the green light of incident short-wave band and the feux rouges of incident long-wave band is transmitted, the second face battle array
Detector 210 only allows incident feux rouges to penetrate.
Three-dimensional perspective measuring system provided by the invention, working method are as follows:
The bright graticle 113 positioned at 112 focal plane of condenser of illumination that the white light source 111 issues, then through institute
Stating becomes collimated light beam after collimator objective 118 collimates, the inclined-plane of right-angle prism 121 described in the parallel beam incident:
Wherein, the green light of short-wave band is after the slant reflection of the right-angle prism 121 again successively through the collimator objective
118, it is received simultaneously after first Amici prism 114 and first narrow band filter 116 by first planar array detector 119
Subsequent image procossing is carried out, the information of corresponding orientation and pitch angle is obtained by the change in displacement of 113 picture of graticle.
Wherein, the inclined-plane of right-angle prism 121 described in the red transmission of long-wave band, and two through the right-angle prism 121 is straight
Again successively through the collimator objective 118, first Amici prism 114, second Amici prism 115 and institute after edged surface reflection
It states and receives and carry out subsequent image procossing by second planar array detector 210 after the second narrow band filter 117, when described straight
When angle prism 121 is rotated around optical axis z-axis, cause the rotation of reflection light, so that the picture of the beam-splitter rotates around x axis,
So as to cause the variation of the slope on second planar array detector 210, with establish right-angle prism 121 around optical axis rotation angle with
Quantitative relationship between the slope variation of above-mentioned 113 picture of graticle obtains roll angle.
In some preferred embodiments, the white light source 111 is LED white light source.
In some preferred embodiments, the inclined-plane subrane of the right-angle prism 121 is coated with optical film, wavelength 620-
The mean transmissivity of 800nm reaches 90%, and the average reflectance of wavelength 470-590nm reaches 95%.
In some preferred embodiments, the optical film can make the mean transmissivity of wavelength 620-800nm reach 90%
More than, the average reflectance of wavelength 470-590nm reaches 95% or more.
In some preferred embodiments, the central wavelength of first narrow band filter is 532nm, second narrowband
The central wavelength of optical filter is 632.8nm.
It is appreciated that the present invention, which is utilized, is coated with optical film plating in the inclined-plane subrane of the right-angle prism 121 and using narrow
The differentiation in orientation, pitch angle measurement and roll angular measurement can be realized with optical filter.
In some preferred embodiments, the graticle is cross-graduation plate, can use the variation of central point to count
Orientation and pitch angle are calculated, to overcome the defect that may be unable to get displacements of slit variation using slit graticle.
It, can be with referring to Fig. 3, for the displacement of cross-graduation plate picture provided in an embodiment of the present invention, slope variation schematic diagram
Understand, it can be using the variation of cross-graduation plate central point come computer azimuth and pitch angle.
Three-dimensional perspective measuring system provided by the invention, using the different reflectings surface of right-angle prism, inclined-plane characterize orientation and
Pitch angle variation, two right-angle surfaces (i.e. crest line) characterize the variation of roll corner, it can be achieved that three-dimensional perspective measures simultaneously, with higher
Angle measurement accuracy, simple and compact for structure, low in cost, non-maintaining, easy to use, system has good future in engineering applications.
Certainly three-dimensional perspective measuring system of the invention can also have a variety of transformation and remodeling, it is not limited to above-mentioned implementation
The specific structure of mode.In short, protection scope of the present invention should include those to those skilled in the art show and
The transformation or substitution that are clear to and remodeling.
Claims (7)
1. a kind of three-dimensional perspective measuring system characterized by comprising measurement end and target side, the target side include right angle
Prism, the measurement end include white light source, condenser, graticle, the first Amici prism, the second Amici prism, the first narrowband
Optical filter, the second narrow band filter, collimator objective, the first planar array detector and the second planar array detector；The right-angle prism
Inclined-plane carries out reflection to the green light of incident short-wave band and transmits to the feux rouges of incident long-wave band, and the second face battle array is visited
Surveying device only allows incident feux rouges to penetrate, in which:
The bright graticle positioned at the condenser focal plane of illumination that the white light source issues, then collimated through the collimator objective
Become collimated light beam afterwards, the inclined-plane of right-angle prism described in the parallel beam incident:
Wherein, the green light of short-wave band is after the slant reflection of the right-angle prism again successively through the collimator objective, described first
Subsequent image procossing is received and carried out by first planar array detector after Amici prism and first narrow band filter, is led to
The change in displacement for crossing the graticle picture obtains the information of corresponding orientation and pitch angle；
Wherein, the inclined-plane of right-angle prism described in the red transmission of long-wave band, and after the reflection of two right-angle surfaces of the right-angle prism
Again successively after the collimator objective, first Amici prism, second Amici prism and second narrow band filter
Subsequent image procossing is received and carries out by second area array CCD, when the right-angle prism is rotated around optical axis z-axis,
Cause the rotation of reflection light, so that the picture of the beam-splitter rotates around x axis, so as to cause on second planar array detector
The variation of slope, to establish quantitative relationship of the right-angle prism between optical axis rotation angle and the slope variation of above-mentioned graticle picture
Obtain roll angle.
2. three-dimensional perspective measuring system as described in claim 1, which is characterized in that the measurement end and target side are placed respectively
On the first pedestal and the second pedestal.
3. three-dimensional perspective measuring system as described in claim 1, which is characterized in that the white light source is LED white light source.
4. three-dimensional perspective measuring system as described in claim 1, which is characterized in that right-angle prism inclined-plane subrane is coated with
Optical film, the mean transmissivity of wavelength 620-800nm reach 90%, and the average reflectance of wavelength 470-590nm reaches 95%.
5. three-dimensional perspective measuring system as claimed in claim 4, which is characterized in that the optical film can make wavelength 620-
The mean transmissivity of 800nm reaches 90% or more, and the average reflectance of wavelength 470-590nm reaches 95% or more.
6. three-dimensional perspective measuring system as described in claim 1, which is characterized in that the middle cardiac wave of first narrow band filter
A length of 532nm, the central wavelength of second narrow band filter are 632.8nm.
7. three-dimensional perspective measuring system as claimed in claim 6, which is characterized in that the graticle is cross-graduation plate.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910754090.6A CN110375708B (en) | 2019-08-15 | 2019-08-15 | Three-dimensional angle measurement system |
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|---|---|---|---|
| CN201910754090.6A CN110375708B (en) | 2019-08-15 | 2019-08-15 | Three-dimensional angle measurement system |
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| CN110375708B CN110375708B (en) | 2020-10-13 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111307072A (en) * | 2020-02-14 | 2020-06-19 | 天津时空经纬测控技术有限公司 | Measuring platform system and measuring system |
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Cited By (2)
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| CN111307072B (en) * | 2020-02-14 | 2022-07-29 | 天津时空经纬测控技术有限公司 | Measuring platform system and measuring system |
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