CN210014761U - Multi-angle test platform for surface feature spectrum - Google Patents
Multi-angle test platform for surface feature spectrum Download PDFInfo
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- CN210014761U CN210014761U CN201921021051.7U CN201921021051U CN210014761U CN 210014761 U CN210014761 U CN 210014761U CN 201921021051 U CN201921021051 U CN 201921021051U CN 210014761 U CN210014761 U CN 210014761U
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- 238000012360 testing method Methods 0.000 title claims abstract description 31
- 238000001228 spectrum Methods 0.000 title claims abstract description 22
- 239000013307 optical fiber Substances 0.000 claims abstract description 20
- 238000005259 measurement Methods 0.000 claims abstract description 4
- 238000002310 reflectometry Methods 0.000 claims abstract description 4
- 239000003638 chemical reducing agent Substances 0.000 claims description 12
- 230000001360 synchronised effect Effects 0.000 claims description 9
- 230000002457 bidirectional effect Effects 0.000 claims description 4
- 238000006073 displacement reaction Methods 0.000 claims description 3
- 238000001514 detection method Methods 0.000 abstract description 2
- 230000003287 optical effect Effects 0.000 abstract description 2
- 239000000463 material Substances 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000002329 infrared spectrum Methods 0.000 description 2
- 238000001429 visible spectrum Methods 0.000 description 2
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000005315 distribution function Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000010287 polarization Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 238000013522 software testing Methods 0.000 description 1
- 238000013519 translation Methods 0.000 description 1
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Abstract
The utility model discloses a multi-angle test platform for a terrestrial spectrum, which belongs to the technical field of optical detection equipment and comprises a platform bracket; the azimuth rotating mechanism is positioned above the platform support and comprises an upper layer disk and a lower layer disk, wherein the upper layer disk is provided with a central hole, the upper layer disk can horizontally rotate in the 360-degree forward and reverse directions relative to the lower layer disk through the driving of a power mechanism, and the lower layer disk is fixed on the platform support; the upper sample platform is positioned at the circle center of the upper layer disc and used for placing a measured object; and the zenith angle rotating mechanism is fixed on the circumference of the upper disc, the zenith angle rotating mechanism is driven by a stepping motor to rotate within +/-90 degrees in a vertical plane, an optical fiber detector is installed at the top of the zenith angle rotating mechanism, and the optical fiber detector realizes the three-dimensional space reflectivity light distribution measurement of a measured object within a hemispherical range through an azimuth angle rotating mechanism and the zenith angle rotating mechanism.
Description
Technical Field
The utility model relates to an optical detection equipment technical field, concretely relates to ground thing spectrum multi-angle test platform.
Background
A Bidirectional Reflectance Distribution Function (BRDF) is a fundamental physical quantity that reflects the spatial reflectance characteristics of a material surface, and describes the distribution of reflected light from an incident ray from a given direction reflected through the material surface into various directions in space. For the surface of a ground object, the BRDF determines the surface morphology of the observed material at different viewing angles. Since the BRDF is a complex multidimensional function, simplified models of diffuse and specular reflection are often used to describe the complete reflection characteristics.
At present, the common centralized BRDF measuring scheme at home and abroad mainly realizes the change of the incident and reflection directions in space by changing the relative positions of a detector, a sample and a light source. In a measurement experiment, the design scheme is simpler when the accuracy of the rotation angle is not required, and a plurality of rotary tables and translation tables are required to be used simultaneously under the condition of special requirements; in addition, in some devices the goniometer stage is protected from the vacuum environment, and some devices also achieve rapid sampling and improved sensitivity by using multiple detectors or optical fibers, which is complicated and costly.
Disclosure of Invention
In order to solve the problem that exists among the prior art, the utility model provides a ground feature spectrum multi-angle test platform only adopts a platform and a realization quick sample of detector, satisfies laboratory visible spectrum, infrared spectrum BRDF test and outdoor remote sensing test needs.
The utility model provides a technical scheme that technical problem adopted as follows:
surface feature spectrum multi-angle test platform includes:
a platform support;
the azimuth rotating mechanism is positioned above the platform support and comprises an upper layer disk and a lower layer disk, wherein the upper layer disk is provided with a central hole, the upper layer disk can horizontally rotate in the 360-degree forward and reverse directions relative to the lower layer disk through the driving of a power mechanism, and the lower layer disk is fixed on the platform support;
the upper sample platform is positioned at the circle center of the upper layer disc and used for placing a measured object;
and the zenith angle rotating mechanism is fixed on the circumference of the upper disc, the zenith angle rotating mechanism is driven by a stepping motor to rotate within +/-90 degrees in a vertical plane, an optical fiber detector is installed at the top of the zenith angle rotating mechanism, and the optical fiber detector realizes the three-dimensional space reflectivity light distribution measurement of a measured object within a hemispherical range through an azimuth angle rotating mechanism and the zenith angle rotating mechanism.
Preferably, the zenith angle rotating mechanism comprises a frame consisting of a vertical frame and a horizontal frame, the bottom end of the vertical frame is connected with the stepping motor and the speed reducer through a rotating shaft, the horizontal frame realizes height adjustment within a range of 1 meter through a slide way and a fixing knob on the vertical frame, and the optical fiber detector is installed at one end of the horizontal frame, so that the detector head is aligned to the center of the azimuth angle rotating mechanism.
Preferably, the upper layer disk of the azimuth rotating mechanism is connected with the stepping motor and the speed reducer through a rotating shaft fixed at the center, and the lower layer disk is used as a rotating base of the upper layer disk and is fixedly connected with the platform support.
Preferably, the optical fiber detector realizes the height adjustment of plus or minus 70-80 mm in the vertical direction and the fine adjustment of plus or minus 1-2 mm in the horizontal direction through an X-Y bidirectional micro-displacement table.
Preferably, a level gauge is embedded on the upper surface of the upper-layer disk.
Preferably, the upper layer disc is provided with azimuth angle scales.
Preferably, the output end of the stepping motor of the zenith angle rotating mechanism is connected with an encoder.
Preferably, still include the lower sample platform that is located platform support below for place the testee, sample platform realizes the altitude mixture control within 0.5 meters of vertical direction through the slide bar and the fixed knob that vertical direction set up down.
Preferably, the power mechanism of the azimuth rotating mechanism comprises a stepping motor and a speed reducer, a synchronous belt and a synchronous belt pulley are driven by the stepping motor and the speed reducer, so that the upper-layer disc can rotate within 360 degrees of a horizontal plane, and one end of the synchronous belt pulley is connected with a manual azimuth rotating handle.
Preferably, a plurality of universal casters are mounted to the bottom of the platform support.
Compared with the prior art, the beneficial effects of the utility model are that:
the utility model discloses a ground feature spectrum multi-angle test platform can drive optical fiber detector through zenith angle rotary mechanism and do hemisphere space rotation in optic fibre is apart from last sample platform certain distance to and do horizontal rotation in the constant diameter through azimuth rotary mechanism, can measure the diffuse reflection object reflection characteristic of equidimension and volume not, especially be used for measuring ground feature three-dimensional space light distribution in the remote sensing technical field, this platform can be expected to obtain wide application in fields such as space remote sensing, geographic information, ocean development, weather research, military project information.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments described in the present invention, and other drawings can be obtained by those skilled in the art according to these drawings.
FIG. 1 is a perspective view of the multi-angle test platform for spectrum of ground features of the present invention;
fig. 2 is a front view of the multi-angle test platform for spectrum of ground feature of the present invention.
Description of reference numerals:
1. a horizontal frame; 2. a vertical frame; 3. a stepping motor; 4. an encoder; 5. a sample loading platform; 6. an upper disc; 7. a lower disc; 8. a sample stage is arranged; 9. a manual azimuth rotation handle; 10. a stepping motor; 11. a universal caster; 12. a platform support; 13. an azimuth rotation mechanism; 14. a zenith angle rotating mechanism; 15. an optical fiber detector.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples.
The multi-angle test platform for the terrestrial spectrum shown in fig. 1-2 comprises a platform support 12, an azimuth rotating mechanism 13 positioned above the platform support 12, an upper sample stage 5 positioned at the circle center of an upper layer disc 6 of the azimuth rotating mechanism, and a zenith angle rotating mechanism 14 fixed on the circumference of the upper layer disc 6;
the platform support 12 can be designed as a cylindrical frame body according to the azimuth rotation mechanism 13;
the azimuth rotating mechanism 13 comprises an upper layer disk 6 and a lower layer disk 7 with central holes, the upper layer disk 6 can horizontally rotate in two directions of 360 degrees in a positive and negative direction relative to the lower layer disk 7 through the driving of a power mechanism, and the lower layer disk 7 is fixed on the platform support 12; the diameter of a rotary disc of the azimuth rotating mechanism 13 is 1 meter, which is closer to the situation of ground objects irradiated by sunlight, and is beneficial to the accuracy of BRDF test results;
the sample loading platform 5 is used for placing a measured object;
zenith angle rotary mechanism 14 realizes 90 degrees rotations in vertical plane through step motor 3 drive, and optical fiber detector 15 is installed at its top, optical fiber detector 15 realizes measuring the three-dimensional space reflectivity light distribution of testee in the hemisphere within range through azimuth rotary mechanism 13 and zenith angle rotary mechanism 14.
As a preferred embodiment, the zenith angle rotating mechanism 14 includes a frame composed of a vertical frame 2 and a horizontal frame 1, the bottom end of the vertical frame 2 is connected with the stepping motor 3 and the reducer through a rotating shaft, the horizontal frame 1 realizes height adjustment within 1 meter through a slide way and a fixed knob on the vertical frame 2, and an optical fiber detector 15 is installed at one end of the horizontal frame 1, so that the detector head is aligned with the center of the azimuth angle rotating mechanism 13. Specifically, the end part of the optical fiber detector is provided with a universal polaroid mounting interface, the polarization azimuth angle can be flexibly assembled and disassembled and can be randomly and manually positioned, the angle division precision is 1 degree, and the optical fiber detector has a return-to-0 adjusting function.
In a preferred embodiment, the upper disc 6 of the azimuth rotation mechanism 13 is connected to a stepping motor and a reducer through a rotating shaft fixed at the center, and the lower disc 7 is fixedly connected to the platform support 12 as a rotating base of the upper disc 6.
In a preferred embodiment, the optical fiber detector 15 realizes the height adjustment of plus or minus 70-80 mm in the vertical direction and the fine adjustment of plus or minus 1-2 mm in the horizontal direction through an X-Y bidirectional micro-displacement table.
In a preferred embodiment, a leveling instrument is fitted to the upper surface of the upper disc 6, and the azimuth rotating mechanism is horizontally adjustable according to the leveling instrument.
In a preferred embodiment, the upper disc 6 is provided with azimuth angle scales, and the minimum resolution is 0.5 degrees.
As a preferred embodiment, the output end of the stepping motor 3 of the zenith angle rotating mechanism 14 is connected with an encoder 4, the rotation angle of the zenith angle rotating mechanism 14 can be accurately controlled by a coaxial output encoder, and the resolution is 0.02 degrees. Meanwhile, the azimuth angle rotating mechanism 13 and the zenith angle rotating mechanism 14 can continuously rotate, and the requirements of automatic control and high precision of the working angles of the light source and the detector by a user are met, namely the resolution of the rotating angle of the upper layer disc 6 is 0.5 degree, and the resolution of the rotating angle of the optical fiber detector 15 is 0.02 degree.
As a preferred embodiment, the multi-angle test platform for the spectrum of the surface feature further comprises a lower sample table 8 located below the platform support 12 and used for placing a measured object, and the lower sample table 8 is used for realizing height adjustment within a range of 0.5 meter in the vertical direction through a slide rod and a fixed knob which are arranged in the vertical direction. The test sample table is divided into an upper sample table and a lower sample table, wherein one upper sample table 5 is fixed, the other lower sample table 8 can move up and down, the moving distance is 0.5 m, the diameter of the sample table is 0.3 m, and the requirements of various size samples and different test distances can be met.
As a preferred embodiment, the power mechanism of the azimuth rotation mechanism 13 includes a stepping motor 10 and a speed reducer, a synchronous belt and a synchronous pulley are driven by the stepping motor and the speed reducer to further realize that the upper disc 6 rotates within 360 degrees of the horizontal plane, and one end of the synchronous pulley is connected with a manual azimuth rotation handle 9. But electric rotation and manual rotation interchange mode are rotatory, satisfy quick large-angle rotation's requirement, have reduced test time, have improved efficiency of software testing, convenience of customers test in the furthest scope.
In a preferred embodiment, a plurality of casters 11 are mounted on the bottom of the platform support 12 to facilitate and speed movement.
The utility model provides a ground feature spectrum multi-angle test platform only adopts quick sample of the diffuse reflection object of a platform and detector one realization equidimension and volume, satisfies laboratory visible spectrum, infrared spectrum BRDF test and outdoor remote sensing test needs.
While embodiments of the invention have been disclosed above, it is not intended to be limited to the applications listed in the specification and the examples. It can be applicable to various and be fit for the utility model discloses a field completely. Additional modifications will readily occur to those skilled in the art. The invention is therefore not to be limited to the specific details and illustrations shown and described herein, without departing from the general concept defined by the claims and their equivalents.
Claims (10)
1. Surface feature spectrum multi-angle test platform which characterized in that includes:
a platform support;
the azimuth rotating mechanism is positioned above the platform support and comprises an upper layer disk and a lower layer disk, wherein the upper layer disk is provided with a central hole, the upper layer disk can horizontally rotate in the 360-degree forward and reverse directions relative to the lower layer disk through the driving of a power mechanism, and the lower layer disk is fixed on the platform support;
the upper sample platform is positioned at the circle center of the upper layer disc and used for placing a measured object;
and the zenith angle rotating mechanism is fixed on the circumference of the upper disc, the zenith angle rotating mechanism is driven by a stepping motor to rotate within +/-90 degrees in a vertical plane, an optical fiber detector is installed at the top of the zenith angle rotating mechanism, and the optical fiber detector realizes the three-dimensional space reflectivity light distribution measurement of a measured object within a hemispherical range through an azimuth angle rotating mechanism and the zenith angle rotating mechanism.
2. The multi-angle spectrum testing platform for the ground features according to claim 1, wherein the zenith angle rotating mechanism comprises a frame consisting of a vertical frame and a horizontal frame, the bottom end of the vertical frame is connected with the stepping motor and the speed reducer through a rotating shaft, the horizontal frame realizes height adjustment within a range of 1 m through a slide way and a fixing knob on the vertical frame, and the optical fiber detector is installed at one end of the horizontal frame, so that the detector head is aligned with the center of the azimuth angle rotating mechanism.
3. The multi-angle test platform for spectrum of ground features as claimed in claim 1, wherein the upper layer disk of the azimuth rotation mechanism is connected to the stepping motor and the reducer through a rotation shaft fixed at the center, and the lower layer disk is used as a rotation base of the upper layer disk and is fixedly connected to the platform support.
4. The multi-angle test platform for spectrum of ground features according to claim 1, wherein the optical fiber detector realizes height adjustment of plus or minus 70-80 mm in vertical direction and fine adjustment of plus or minus 1-2 mm in horizontal direction by an X-Y bidirectional micro-displacement stage.
5. The multi-angle test platform for the spectrum of the surface feature of claim 1, wherein a level is embedded on the upper surface of the upper disc.
6. The multi-angle test platform for spectrum of ground features as claimed in claim 1, wherein the upper disc is provided with azimuth angle scales.
7. The surface feature spectrum multi-angle test platform of claim 1, wherein an encoder is connected to an output end of a stepping motor of the zenith angle rotating mechanism.
8. The surface feature spectrum multi-angle test platform of claim 1, further comprising a lower sample stage located below the platform support and used for placing a measured object, wherein the lower sample stage realizes height adjustment within a range of 0.5 meter in the vertical direction through a slide rod and a fixed knob which are arranged in the vertical direction.
9. The multi-angle test platform for the spectra of the ground objects as claimed in claim 1, wherein the power mechanism of the azimuth rotation mechanism comprises a stepping motor and a speed reducer, the stepping motor and the speed reducer drive a synchronous belt and a synchronous belt pulley to realize the rotation of the upper disc within 360 degrees in the horizontal plane, and one end of the synchronous belt pulley is connected with a manual azimuth rotation handle.
10. The multi-angle test platform for spectrum of ground features according to claim 1, wherein a plurality of casters are mounted at the bottom of the platform support.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921021051.7U CN210014761U (en) | 2019-07-03 | 2019-07-03 | Multi-angle test platform for surface feature spectrum |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921021051.7U CN210014761U (en) | 2019-07-03 | 2019-07-03 | Multi-angle test platform for surface feature spectrum |
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| CN210014761U true CN210014761U (en) | 2020-02-04 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112834028A (en) * | 2020-12-29 | 2021-05-25 | 安徽中科谱锐达光电有限公司 | Multi-angle broadband surface reflectivity measuring device and method |
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- 2019-07-03 CN CN201921021051.7U patent/CN210014761U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112834028A (en) * | 2020-12-29 | 2021-05-25 | 安徽中科谱锐达光电有限公司 | Multi-angle broadband surface reflectivity measuring device and method |
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