CN104596940B - A kind of automatic measurement system of whole day domain atmospheric polarization type - Google Patents
A kind of automatic measurement system of whole day domain atmospheric polarization type Download PDFInfo
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- CN104596940B CN104596940B CN201510050860.0A CN201510050860A CN104596940B CN 104596940 B CN104596940 B CN 104596940B CN 201510050860 A CN201510050860 A CN 201510050860A CN 104596940 B CN104596940 B CN 104596940B
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Abstract
The invention discloses a kind of whole day domain atmospheric polarization type automatic measurement system, it is characterized in that including：Whole day domain information acquisition module, triple channel polarization module and control module；Whole day domain light source input system exports the whole day domain light beam of optimal light path to triple channel polarization module through whole day domain information acquisition module, triple channel polarization module carries out information type conversion to the whole day domain light beam of optimal light path and exports whole day domain polarization image information to control module, control module control triple channel polarization module collection obtains whole day domain polarization image information, through Stokes vector algorithm process and calculating, output whole day domain atmospheric polarization type information.The present invention can gather the whole day domain polarization image information in the lower three different polarization directions in same visual field simultaneously, and obtain whole day domain atmospheric polarization type information, so as to eliminate error.
Description
Technical field
Field, specifically a kind of whole day domain atmospheric polarization are obtained the present invention relates to atmospheric optics research and intelligent information
The automatic measurement system of pattern.
Background technology
Sunshine as a kind of lamp in atmosphere transmitting procedure because of atmosphere in the particle such as aerosol act on meeting
Scatter, the natural light of unbiased is converted, produce polarised light.A large amount of sunshines can form spy after being acted on through particle in atmosphere
Fixed polarization state distribution, i.e. atmospheric polarization type.Atmospheric polarization type can be represented by atmospheric polarization degree, polarization direction.
Research finds that atmospheric polarization type, which is distributed, has certain regularity, in regular change in one day, certain a period of time in one day
Carve, under a certain place, because of the temporary transient consistency of environment, atmospheric polarization type has certain stability.Further investigate air inclined
The situation of change for pattern of shaking, certain theoretical foundation can be provided for navigation research by analyzing its changing rule.
Polarized in the air to obtain day, study polarization variations situation, people design various polarimeters and obtain inclined
Shake information.In view of convenience, the polarimeter of design is obtained using the method for temporal segmentation and space regional partition mostly
Polarization image under different polarization direction.Temporal segmentation is that experimenter obtains different polarization side respectively by rotatory polarization piece
Downward sky polarization image, a kind of new polarized radiation degree detection of Kenneth J.Voss and Yi Liu designs in such as 1997
System；Space regional partition is then the polarizer that different directions are respectively mounted in multiple identical polarimeters, is adopted simultaneously
The image in collection domain on the same day, a kind of three-lens of such as 2002 Hungarian G á bor Horv á th et al. design, three cameras
All-sky Polarization Detection meter；The day area image in different polarization direction, operability can be easily obtained based on both the above method
By force；But both approaches will carry out error because of time delay and the spatial domain different band shot respectively.List based on temporal segmentation method
Camera lens one camera polarimeter can bring certain error, based on spatial domain because needing rotatory polarization piece when shooting because of time delay
Many camera lens polyphaser polarimeters of dividing method then can produce certain error because shooting visual field difference under the same time.
The content of the invention
The present invention is that there is provided oneself of a kind of whole day domain atmospheric polarization type in order to overcome the weak point that prior art is present
Dynamic measuring system, to gather the whole day domain polarization image information in the lower three different polarization directions in same visual field simultaneously, and is obtained
Whole day domain atmospheric polarization type information is obtained, so as to eliminate because of whole day domain polarization image under rotatory polarization piece collection different polarization direction
And carried out simultaneously using multiple measurement apparatus when whole day area image is gathered under different polarization direction because when extend to position difference and cause
The error that visual field is different and brings.
The present invention adopts the following technical scheme that to solve technical problem：
A kind of the characteristics of automatic measurement system of whole day domain of the invention atmospheric polarization type is to include：Whole day domain information is obtained
Module, triple channel polarization module and control module；The whole day domain information acquisition module receives whole day domain light source and is adjusted, defeated
Go out the whole day domain light beam of optimal light path to the triple channel polarization module；The triple channel polarization module is to the optimal light path
Whole day domain light beam carries out information type conversion, and exports the whole day domain polarization image information of triple channel to the control module；Institute
The whole day domain polarization image that control module controls the triple channel polarization module to receive triple channel is stated, and to the complete of the triple channel
Its domain polarization image carries out Stokes vector algorithm process, obtains whole day domain atmospheric polarization type information.
The characteristics of automatic measurement system of whole day domain of the present invention atmospheric polarization type, lies also in：
The composition of the whole day domain information acquisition module includes：Whole day domain visual angle camera lens, relay optic, waveband selection module
With nearly burnt regulation camera lens；
Whole day domain visual angle camera lens receives whole day domain light source and exports divergent beams to the relay optic；It is described
Relay optic, which is adjusted and exported to the divergent light source, gathers light beam to the waveband selection module；The waveband selection mould
Block carries out waveband selection to the light beam of gathering, and exports the whole day domain light beam of selection wave band to the nearly burnt regulation camera lens；It is described
Nearly burnt regulation camera lens is carried out after focus adjustment to the whole day domain light beam of the selection wave band, obtains the whole day domain light beam of optimal light path
Export to triple channel polarization module.
The composition of the triple channel polarization module includes：Amici prism, it is made up of a passage polarizer and a channel C CD
One passage, two passages being made up of two passage polarizers and two passage CCD, it is made up of triple channel polarizer and triple channel CCD
Triple channel；
The Amici prism receives the whole day domain light beam of the optimal light path and carries out light-splitting processing and obtains on three directions
Optimal light path whole day domain light beam, the whole day domain light beam of the optimal light path on three directions is delivered separately to described one
Passage, two passages and triple channel；The one passage polarizer, two passage polarizers and triple channel polarizer receive described three respectively
The whole day domain light beam of optimal light path on individual direction is simultaneously carried out after the whole day domain polarised light that filtration treatment is obtained on three directions, point
Supplementary biography passs the whole day domain polarization image information that the channel C CD, two passage CCD and triple channel CCD are used to export triple channel.
The waveband selection module is that the optical filter and a full impregnated sheet glass of five different-wavebands are placed on into optical filter
Constituted in rotating wheel, and waveband selection is carried out by the control module.
Guard shield is provided with the outside of the automatic measurement system and environment adapts to equipment；The guard shield and ring
Border, which adapts to equipment, to be included：Cylinder protective cover, protective cover, circular arc, disc occulter and temperature controller；
The whole day domain information acquisition module and triple channel polarization module are placed inside the cylinder protective cover；Described
Circular skylight is offered at the top of cylinder protective cover, for being supplied to the whole day domain information acquisition module to receive the whole day
Domain light source；Automatic-opening protective cover is provided with above the circular skylight；
The circular arc is provided with above the outside of the cylinder protective cover, the circular arc is with the cylinder
A diameter of axle of body protective cover is rotated；The disc occulter is set in the circular arc；The disc hides
Body of light is moved in the circular arc；Barrier structure to direct sunlight is formed with the disc occulter, with
The temperature controller realizes the regulation for protecting the cylinder case temperature.
Compared with the prior art, the present invention has the beneficial effect that：
1st, the present invention is overcome using single-lens, many CCD polarization measurement system structure and rotated partially under single-lens, one camera
Shake piece when the error brought by time delay, overcome the error come under many camera lenses, polyphaser by acquisition field of view different band；
2nd, the present invention uses control module, by controlling triple channel polarization module to realize to the complete of whole automatic measurement system
Its domain acquisition control, whole day domain polarization image can be obtained in real time and handle obtain atmospheric polarization type information, it is to avoid profit
The time delay of data processing is carried out with the traditional camera gathered data later stage, the atmospheric polarization type measurement experiment of whole day domain is improved
Efficiency；
3rd, the present invention receives the whole day domain light beam of optimal light path using triple channel polarization module, can be obtained by Amici prism
The whole day domain beam Propagation of the optimal light path of three beams decile to three different directions polarizer, so as to obtain three different polarizations
The whole day domain polarization image of same visual field under direction, overcomes to the whole day domain polarization image gatherer process under different polarization direction
The visual field difference of middle generation；
4th, the present invention uses waveband selection module, installs the optical filter of different-waveband and the sheet glass of all-pass wave band, passes through
The rotation selection optical filter of optical filter rotating wheel is controlled, so that whole day domain atmospheric polarization type under alternative research different-waveband
Situation of change；
5th, to overcome the optical path change that addition waveband selection modular belt comes in the present invention, using relay optic and nearly burnt regulation
The light path of camera adjusting whole day domain light beam, makes light path be transmitted after being optimal to the triple channel polarization module of rear end.
6th, the present invention adapts to equipment using guard shield and environment and is arranged at whole day domain atmospheric polarization type automatic measurement system
The outside of system, prevents whole day domain polarization image from adopting for protecting system to avoid the boisterous influence such as sleet, blocking sunshine
Overexposure, the maintenance measuring system during collection, which are under constant temperature, avoids influence of the temperature to equipment, is continuous long-time
Outdoor experiment provide reliable protection facility.
Brief description of the drawings
Fig. 1 is present system index path；
Fig. 2 is present system internal structure block diagram；
Fig. 3 is the structural representation that guard shield of the present invention and environment adapt to equipment；
Label in figure：1 whole day domain visual angle camera lens；2 relay optics；3 waveband selection modules；4 nearly burnt regulation camera lenses；5 light splitting
Prism；The passage polarizers of 6a mono-；The passage polarizers of 6b bis-；6c triple channel polarizers；The channel C CD of 7a mono-；The passage CCD of 7b bis-；7c
Triple channel CCD；8 cylinder protective covers；9 protective covers；10 circular arcs；11 disc occulters；12 temperature controllers.
Embodiment
In the present embodiment, a kind of automatic measurement system of whole day domain atmospheric polarization type includes：Whole day domain information obtains mould
Block, triple channel polarization module and control module；Fig. 1 is shown to be made up of whole day domain information acquisition module and triple channel polarization module
Light channel structure figure, whole day domain information acquisition module receives whole day domain light source and is adjusted, and exports the whole day domain light of optimal light path
Beam is to triple channel polarization module；Triple channel polarization module carries out information type conversion to the whole day domain light beam of optimal light path, and defeated
Go out the whole day domain polarization image information of triple channel to control module；As shown in Fig. 2 control module by with triple channel polarization module
Communication is set up, control triple channel polarization module carries out IMAQ and sends data to control module, and control module receives three
The whole day domain polarization image of passage, the whole day domain polarization image of directly output triple channel is stored, while under control and right
The whole day domain polarization image of triple channel is calculated, and is polarized and schemed using the whole day domain of Stokes vector algorithm process triple channel
Picture, obtains polarization parameter degree of polarization and polarization direction angle information, as whole day domain atmospheric polarization type information.
As shown in figure 1, originally applying in example, the composition of day domain information acquisition module includes：Whole day domain visual angle camera lens 1, relay lens
Piece 2, waveband selection module 3 and nearly burnt regulation camera lens 4；
Whole day domain visual angle camera lens 1 receives whole day domain light source and exports divergent beams to relay optic 2；In order to adapt to rear end three
The light path demand of passage polarization module, relay optic 2, which is adjusted and exported to the light path of divergent light source, gathers light beam to wave band
Selecting module 3；It is to control the rotation of optical filter rotating wheel to enter traveling wave to gathering light beam by control module in waveband selection module 3
Section selection, exports the whole day domain light beam of selection wave band to nearly burnt regulation camera lens 4；The whole day of nearly burnt 4 pairs of selection wave bands of regulation camera lens
Domain light beam is carried out after focus adjustment, and the whole day domain light beam for obtaining optimal light path is exported to triple channel polarization module.
As illustrated in fig. 1 and 2, the composition of triple channel polarization module includes：Amici prism 5, by a passage polarizer 6a and one
A passage that channel C CD7a is constituted, two passages being made up of two passage polarizer 6b and two passage CCD7b, polarized by triple channel
The triple channel that piece 6c and triple channel CCD7c are constituted, a passage, two passages and triple channel are located at the different face of Amici prism respectively
On；
Amici prism 5 receives the whole day domain light beam of optimal light path and carries out the optimal light on three directions of light-splitting processing acquisition
The whole day domain light beam on road, a passage, two passages and three are delivered separately to by the whole day domain light beam of the optimal light path on three directions
Passage；One passage polarizer 6a, two passage polarizer 6b and triple channel polarizer 6c receive the optimal light on three directions respectively
The whole day domain light beam on road is simultaneously carried out after the whole day domain polarised light that filtration treatment is obtained on three directions, is delivered separately to a passage
CCD7a, two passage CCD7b and triple channel CCD7c, a channel C CD7a, two passage CCD7b and triple channel CCD7c are respectively used to pair
The whole day domain polarised light of reception carries out information type conversion, exports the whole day domain polarization image information of triple channel.
Waveband selection module 3 is that the optical filter and a full impregnated sheet glass of five different-wavebands are placed on into optical filter rotation
Constituted on wheel, and the rotation of optical filter rotating wheel is controlled based on serial port protocol by control module and then selects optical filter to carry out
Waveband selection, carries out corresponding atmospheric polarization type analysis and research experiment under the wave band of selection.
For continuous for a long time atmospheric polarization type measurement experiment can be carried out out of doors, it is provided with the outside of automatic measurement system
Guard shield and environment adapt to equipment；Include as shown in figure 3, guard shield and environment adapt to equipment：It is cylinder protective cover 8, anti-
Protecting cover 9, circular arc 10, disc occulter 11 and temperature controller 12；
Whole day domain information acquisition module and triple channel polarization module are placed in the inside of cylinder protective cover 8；In cylinder
The top of protective cover 8 offers circular skylight, and circular skylight can be used for being supplied to whole day domain information to obtain mould when testing out of doors
Block receives whole day domain light source；Automatic-opening protective cover 9 is provided with above circular skylight, in non-experiment to circle
Skylight is covered, so as to protect automatic measurement system not affected by environment；
Circular arc 10 is provided with above the outside of cylinder protective cover 8, circular arc 10 is with cylinder protective cover 8
A diameter of axle is rotated；Disc occulter 11 is set in circular arc 10；Disc occulter 11 is in circular arc 10
On move；Under the control of control module, circular arc 10 and disc occulter 11 are moved to sun direct projection position simultaneously
Put, and the barrier structure to direct sunlight is formed with disc occulter 11, be provided with the outside of cylinder protective cover 8 rectangular
Build action pane able to turn on or off；Automatic measurement system can be positioned over by the cuboid-type action pane by cylinder protective cover
8 regulations that are interior and carrying out related hardware parameter, and temperature controller 12 is placed in cuboid-type action pane, so as in cylinder
The outside of body protective cover 8 adjusts the temperature in cylinder protective cover 8 by temperature controller 12；Or cylinder is controlled by control module
Temperature in body protective cover 8；The automatic measurement system is set to be under normal temperature.
Claims (2)
1. a kind of automatic measurement system of whole day domain atmospheric polarization type, it is characterized in that including：Whole day domain information acquisition module, three
Passage polarization module and control module；The whole day domain information acquisition module receives whole day domain light source and is adjusted, and exports optimal
The whole day domain light beam of light path is to the triple channel polarization module；Whole day domain of the triple channel polarization module to the optimal light path
Light beam carries out information type conversion, and exports the whole day domain polarization image information of triple channel to the control module；The control
Module controls the whole day domain polarization image of the triple channel polarization module reception triple channel, and inclined to the whole day domain of the triple channel
The image that shakes carries out Stokes vector algorithm process, obtains whole day domain atmospheric polarization type information, the triple channel polarization module
Composition include：Amici prism (5), the passage being made up of a passage polarizer (6a) and a channel C CD (7a), by two passages
Two passages that polarizer (6b) and two passage CCD (7b) are constituted, it is made up of triple channel polarizer (6c) and triple channel CCD (7c)
Triple channel；The Amici prism (5), which receives the whole day domain light beam of the optimal light path and carries out light-splitting processing, obtains three directions
On optimal light path whole day domain light beam, the whole day domain light beam of the optimal light path on three directions is delivered separately to described
One passage, two passages and triple channel；The one passage polarizer (6a), two passage polarizers (6b) and triple channel polarizer (6c)
The whole day domain light beam of the optimal light path on three directions is received respectively and filtration treatment is carried out obtains complete on three directions
After its domain polarised light, being delivered separately to the channel C CD (7a), two passage CCD (7b) and triple channel CCD (7c) is used to export
The whole day domain polarization image information of triple channel；The composition of the whole day domain information acquisition module includes：Whole day domain visual angle camera lens
(1), relay optic (2), waveband selection module (3) and nearly burnt regulation camera lens (4)；Whole day domain visual angle camera lens (1) receives institute
State whole day domain light source and export divergent beams to the relay optic (2)；The relay optic (2) is carried out to the divergent light source
Adjust and export and gather light beam to the waveband selection module (3)；The waveband selection module (3) is carried out to the light beam of gathering
Waveband selection, exports the whole day domain light beam of selection wave band to the nearly burnt regulation camera lens (4)；The nearly burnt regulation camera lens (4) is right
The whole day domain light beam of the selection wave band is carried out after focus adjustment, and the whole day domain light beam for obtaining optimal light path exports inclined to triple channel
Shake module；The waveband selection module (3) is that the optical filter and a full impregnated sheet glass of five different-wavebands are placed on into optical filtering
Constituted in piece rotating wheel, and waveband selection is carried out by the control module.
2. the automatic measurement system of whole day domain according to claim 1 atmospheric polarization type, it is characterized in that：Described automatic
Guard shield is provided with the outside of measuring system and environment adapts to equipment；The guard shield and environment, which adapt to equipment, to be included：Circle
Cylinder protective cover (8), protective cover (9), circular arc (10), disc occulter (11) and temperature controller (12)；
The whole day domain information acquisition module and triple channel polarization module are placed inside the cylinder protective cover (8)；Described
Cylinder protective cover offers circular skylight at the top of (8), described for being supplied to the whole day domain information acquisition module to receive
Whole day domain light source；Automatic-opening protective cover (9) is provided with above the circular skylight；
Be provided with the circular arc (10) above the outside of the cylinder protective cover (8), the circular arc (10) with
A diameter of axle of the cylinder protective cover (8) is rotated；The disc shading is set in the circular arc (10)
Body (11)；The disc occulter (11) moves in the circular arc (10)；With the disc occulter
(11) barrier structure to direct sunlight is formed, is realized with the temperature controller (12) to warm in the cylinder protective cover (8)
The regulation of degree.
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| CN106353954A (en) * | 2016-08-30 | 2017-01-25 | 辽宁中蓝电子科技有限公司 | Camera system capable of improving quality of low-illuminance images with polarization detection technology |
| CN107478858B (en) * | 2017-07-24 | 2020-02-18 | 大连理工大学 | Motion speed detection sensor device and detection method based on Stokes vector light stream |
| CN110907360A (en) * | 2019-12-19 | 2020-03-24 | 中国科学院长春光学精密机械与物理研究所 | Polarization detection system based on wolflaston prism |
| CN113566810A (en) * | 2021-06-30 | 2021-10-29 | 合肥工业大学 | Time sequence sky polarization mode information acquisition equipment, acquisition system and acquisition method |
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