CN104316468A - Multi-purpose omnibearing measuring system for spectrum of surface feature sample - Google Patents

Multi-purpose omnibearing measuring system for spectrum of surface feature sample Download PDF

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Publication number
CN104316468A
CN104316468A CN201410546684.5A CN201410546684A CN104316468A CN 104316468 A CN104316468 A CN 104316468A CN 201410546684 A CN201410546684 A CN 201410546684A CN 104316468 A CN104316468 A CN 104316468A
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CN
China
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control
measurement
spectral
sample
atural
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CN201410546684.5A
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Chinese (zh)
Inventor
唐义
朱庆炜
崔璐
张学斌
南一冰
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北京理工大学
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Priority to CN201410546684.5A priority Critical patent/CN104316468A/en
Publication of CN104316468A publication Critical patent/CN104316468A/en

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Abstract

The invention discloses a multi-purpose omnibearing measuring system for spectrum of a surface feature sample. The system comprises a broadband spectrum solar simulation light source, a surface feature spectrograph, a power system, a surface feature sample autoroatation device, and a detector revolution device, and can work under conditions with/without power supply indoors/or in the field, to realize multi-purpose omnibearing measuring. The multi-purpose omnibearing measuring system for measuring the spectrum of the surface feature sample is mainly used for measuring the spectrum of the surface feature sample, adopts the broadband spectrum solar simulation light source for simulating solar light which irradiates the surface of the surface feature, adopts the surface feature sample autoroatation device and the detector revolution device for controlling relative position of the surface feature sample and the incident beam as well as the relative position of a detector and the surface feature sample, for realizing the purpose that the detector receives reflected light on the surface of the surface feature sample, so as to obtain the spectrum information of the surface feature sample. In addition, the system can perform spectral measurement on other objects or be used as a multi-dimensional-freedom-degree electronic control platform.

Description

Multi-functional atural object sample spectra omnidirectional measurement system
Technical field
The present invention relates to spectral measurement field, relate generally to atural object sample spectra measuring system, be specifically related to multi-functional atural object sample spectra omnidirectional measurement system.
Background technology
Along with continuous progress and the development of physics, information science and earth observation technology, new branch of science remote sensing exploration is formed gradually, remote sensing exploration technology (particularly high-spectrum remote-sensing exploration technique) has become an importance of location calibration new technologies, and service field covers regional geologic reconnaissance, mineral resources, the hydrology, environment, space flight and aviation calibration, geological hazards prediction etc.
Atural object remote sensing exploration obtains mainly through various detection means, analyze and extracts the spectral characteristic of wave spectrum on wavelength, Time and place of dissimilar atural object, to reach the object of ground object information extraction.Spectroscopic data is the basis of remote sensing analysis application, significant to the calibration of space flight and aviation sensor, remotely-sensed data decipher, the research of remote sensing application potentiality.
Atural object sample spectral data surveying work is the work by the restriction of Various Complex factor, and atural object sample spectra signature analysis is the key link of remote sensing ground object information extraction, and the selection of measuring method is a step very crucial in spectroscopic data measuring process.And atural object sample spectra gathers many-sided impacts such as being subject to illumination, air, measurement mechanism, measuring method in the wild, carry out Measurement accuracy and need consider many-sided factor.At present the hand-held mensuration of the multiplex probe of spectrographic detection is carried out for soil, rock, plant etc., hand-held mensuration automaticity of popping one's head in is low, probe regulates and controls difficulty with the distance of higher building body, three axial rakes etc. of popping one's head in, poor repeatability, from object excessively close to, people and device reflected light also have considerable influence for spectral measurement.Current measurement mechanism can realize certain robotization, but measurable angular range is limited, and measuring accuracy is not high, and the distance of probe distance target object is difficult to adjustment etc., and function is very limited.
Summary of the invention
The invention provides the multi-functional atural object sample spectra omnidirectional measurement system of a kind of field indoor dual-purpose, it can solve the problem in background technology.Utilize wide spectral sun simulating light source at dark Indoor measurement, eliminate contextual factor and other factors to the impact of target optical spectrum feature, not only can eliminate ground unrest, and can the geometric angle that irradiates of control observation and light effectively.Utilize simultaneously and control that universal stage carries out various dimensions to device, high precision regulates, optional position can be realized in the hemisphere be detected centered by thing and measures, realize omnidirectional measurement, have quick detachable, precision is high, operation is succinct, the advantage such as stable.
Multi-functional atural object sample spectra omnidirectional measurement system composition as shown in Figure 1, is specially:
(1) wide spectral sun simulating light source: adopt spectrum close to the high-power halogen tungsten lamp source of solar spectrum, stablizes by keeping light-source temperature, to reach stable output.By collimating optics system, light beam is collimated, become a branch of directional light, with the outgoing of simulating nature light.By diaphragm, the size of bright dipping hot spot can be changed, be suitable for the application of different size determinand.
(2) field spectroradiometer: measuring system utilizes wide spectral sun simulating light source as light source, utilize field spectroradiometer to measure and obtain ground matter sample spectral radiance, utilize diffuse reflection reference version measurement of comparison, obtain the reflectance spectrum information of ground matter sample, by the measurement to the diffuse reflection reference plate through demarcating, obtain the total illumination of light source and the spectral information of direct projection and diffuse illumination, the mechanical hook-up of matching design, can obtain the direction reflection factor spectral information parameter of ground matter sample.
(3) matter sample rotating device: by controlled stepper motor, can realize measured object bidimensional freedom degree rotating, comprise the pitching of ground matter sample and horizontally rotate, atural object specimen sample to be measured is fixed on fixed mount, by USB port communicating circuit, be connected with control computer.
(4) universal stage control box: internal USB mouth communicating circuit, stepping motor control circuit.Control computer can be run by Real-Time Monitoring rotating device by USB port communicating circuit, and control the action of rotating device.
(5) control software design: be divided into host computer and slave computer software.Slave computer is motor driver, and host computer is graphical man machine operation interface, and by man machine operation interface, operating personnel can easily realize accurate control.
(6) detector revolution device, fixed detector and rotating device: the bidimensional degree of freedom detection realizing detector.Adopt meridian guide rail with a scale, i.e. semicircle detector bracing frame, hang above and can to stretch and along the distance adjusting system of meridian slide, its distance of stretch out and draw back 200mm-1000mm, detector is fixed on adjusting gear end.Meridian guide rail is fixed on horizontal guide rail.Horizontal guide rail can manually be rotated by sliding friction.Distance adjusting system is fixed on meridian guide rail by fixing slide block group, and the fixing slide block group of adjustment, can make distance adjusting system move along meridian guide rail, the distance adjustment of row detector of going forward side by side probe and ground matter sample.
(7) power supply box: adopt variable constant current Energy control light source luminescent strong and weak.Relative to existing hand hold transducer mensuration and existing measurement mechanism, atural object multi-functional omnidirectional light spectral measurement system has following advantage:
A () utilizes wide spectral sun simulating light source, can carry out Indoor measurement, avoid the impact being subject to field environment, greatly improves stability and the reliability of measurement.
B () multidimensional degree of freedom is measured, measured object is fixed on rotating device, and can realize bidimensional freedom degree rotating, detector is fixed on revolution device, can realize the detection of bidimensional degree of freedom.Coordinate with scalable distance adjusting system, the episphere optional position that can realize centered by measured object is measured.
C () system surfaces scribbles antireflection material, prevent interference of stray light spectral measurement.
D () adopts stepper motor adjustment measured object angle, it is convenient to control, and Adjustment precision is high.
E () is easy and simple to handle, controlled by graphical operation interface, can input arbitrarily angled adjustment, controls accurately.
F () is detachable, be convenient for carrying, position and angle information all can quantize, and overcome the uncontrollable difficult problem of measuring error.
Accompanying drawing illustrates:
Figure 1 shows that multi-functional atural object sample spectra omnidirectional measurement system framework figure.
Figure 2 shows that ground matter sample rotating device schematic diagram.
Figure 3 shows that detector revolution device schematic diagram.
Figure 4 shows that embodiment one schematic diagram.
Figure 5 shows that embodiment two schematic diagram.
Figure 6 shows that embodiment three schematic diagram.
Figure 7 shows that embodiment four schematic diagram.
Embodiment
Below, by reference to the accompanying drawings and preferred embodiment describe in detail embodiment of the present invention.
Figure 1 shows that multi-functional atural object sample spectra omnidirectional measurement system framework schematic diagram.System comprise wide spectral sun simulating light source, power-supply system, field spectroradiometer, matter sample rotating device, detector revolution device, tele-control system.Wherein, wide spectral sun simulating light source by power-supply system for it provides stable electric current, outgoing directional light after optical alignment, field spectroradiometer is for receiving the reflected light reflected by atural object sample surfaces, ground matter sample rotating device realizes bidimensional freedom degree rotating under the control of tele-control system, and detector revolution device realizes the rotation of detector surface level and the angle of pitch and stretches.
Figure 2 shows that ground matter sample rotating device.Comprise horizontal rotating table, pitching universal stage and fixed frame.Fixed frame is fixed on pitching universal stage, by controlling two universal stages, realizes Angle ambiguity.
Figure 3 shows that detector revolution device.Comprise horizontal guide rail, meridian guide rail, distance adjusting system, detector probe seat, fixing slide block group horizontal guide rail is a large dial disc, and intermediate ball bearing is used for disc rotary.Meridian guide rail on horizontal guide rail is a semicircle bracing frame with a scale, can rotate with horizontal guide rail.Distance adjusting system is fixed on semicircle bracing frame by fixing slide block group, and detector holder is used for fixed detector, keeps the stable of detection.Stretching of controllable distance adjusting gear, thus control detector in the distance being detected thing.
Embodiment one:
Figure 4 shows that each component locations schematic diagram of embodiment one.In the present embodiment, measuring system completes measurement under indoor or dark situation.Light source is placed on bracing frame, power-supply system is positioned over by light source, detector revolution device is placed in support platform, ground matter sample rotating device is fixed on revolution device center, revolution device is rotated around it, under field spectroradiometer is placed in support platform, circuit control box and tele-control system are put on another platform, carry out Long-distance Control by interface links.
After power supply is connected, the ground matter sample fixed frame of rotating device is adjusted to vertical state automatically, and upper computer software angle information is initialized as 0 °.Ground matter sample is placed on fixed frame, and fixed by screw, tangent plane outwardly.The light that light source sends perpendicular to ground matter sample tangent plane outgoing, regulates the emergent light spot of suitable size through collimation by controlling diaphragm, adjust source current size, to control hot spot power simultaneously.When hot spot is radiated at after on measured object, how no matter the bidimensional degree of freedom of rotating device rotate, and hot spot is all radiated at measured object center, can obtain the simulating nature light of different incidence angles.Carrying out the rotation of level of control universal stage and pitching universal stage by arranging control software design horizontal angle and the angle of pitch, reaching the light beam object that matter sample is incident from different perspectives relatively testedly, thus having different reflection angle, meeting and measure requirement.Angle ambiguity can continuous rotation to set angle, also can set stepping angle, rotate according to stepping angle.Now the horizontal angle of matter sample and the angle of pitch read by graphic interface or read from universal stage scale.Meanwhile, rotating water level gauge, is fixed on the detector relatively matter sample rotation of distance adjusting system, can detects reflected light in different angles.Distance adjusting system is fixed or moves along semicircle bracing frame, distance adjusting system can stretch by measured object relatively, adjust different measuring distances, multi-faceted adjustment, obtain different incidence zenith angle, detection zenith angle and directional bearing angle etc., the episphere optional position realized centered by measured object is measured.
This Example embodiments can reduce the impact of outside environmental elements, coordinates the accurate control of rotating device and revolution device, overcomes the uncontrollable difficult problem of error.
Embodiment two
Figure 5 shows that the schematic diagram of embodiment two.In the present embodiment, wide spectral sun simulating light source is cast out, directly apply sunlight on ground matter sample.
Rotating device working method is identical with embodiment one, and the two-dimensional freedom being controlled ground matter sample by tele-control system is rotated, and the angle making sunlight never same relative to ground matter sample is incident, thus produces the reflected light of different angles.Revolution device working method is identical with embodiment one, rotates and stretch at surface level and meridian ellipse, controls detector probe and receives reflected light from diverse location.Meanwhile, apparatus surface scribbles antireflection material, reduces reflected light to the interference of measuring.
The advantage of this Example embodiments is not need wide spectral sun simulating light source to coordinate, and can apply in outdoor.
Embodiment three:
Fig. 6 is the schematic diagram of embodiment three.
In this example, the present invention is simplified, make it to be adapted to field survey.Run into some ground matter samples in the middle of field survey process to be sometimes difficult to gather, now detector is just by the hand-held detection of people, and the error of such parameters becomes uncontrollable, and field detection mechanical hook-up should avoid heaviness simultaneously, and should have very high dirigibility.
In implementation process, 2-d rotating platform of the present invention is slightly done to be out of shape, field can be realized and accurately measure.Be placed in by 2-d rotating platform on holder, original place matter sample fixed frame is used for fixing a cantilever, and fixed detector probe above cantilever, cantilever length is scalable, and outside is connected with tele-control system by interface.After power supply is connected, identical with embodiment one, fixed frame initial position is that vertically the position of cantilever is level, operation upper computer software, horizontal angle and the angle of pitch that different angle values can control cantilever is set to horizontal rotating table and pitching universal stage, thus control the detection angle of detector probe, in addition, different according to distance, can telescopic cantilever, change detection range.
Present embodiment considers some special case of field, cast out analog light source and revolution device, utilize field natural light as light source, by accurately control detector over the ground matter sample spectrum measure, easy portable, in addition, this embodiment also can carry out spectra collection to other objects, embodiment and above-mentioned with.
Embodiment four:
Fig. 7 is the schematic diagram of embodiment four.
Present embodiment considers the polytrope of field environment, dark on high, and during sunlight more weak or night, embodiment three is just difficult to collect data accurately.Now, utilize wide spectral sun simulating light source, can overcome this difficulty, make adaptability stronger, range of application is wider.
As 2-d rotating platform is slightly done to be out of shape by Fig. 7, utilize power-supply system for light source power supply, by the light beam irradiation after collimation on determinand, then measure measured object according to embodiment three.
In specifically implementing at above-mentioned four, the measurement of spectrum relates to Indoor measurement, outdoor measurement, measures and measure under wide spectral sun simulating light source under natural light condition, and under different conditions, the present invention can be out of shape accordingly according to use.Wherein, all parts functional characteristics is as follows:
ground matter sample rotating device: level and pitching bidimensional degree of freedom turntable, rotation pitch range :-10 ° ~ 90 °, horizontal angular range: 0 ° ~ 360 °, can obtain two dimension angular information in real time, precision reaches 0.1 °;
detector revolution device: fixed detector and measured object rotating device, by regulating, realize the different incidence zenith angle of detector, detection zenith angle and the detection of directional bearing angle, revolution angle scope is 0 ° ~ 90 °, level angle 0 ° ~ 360 °, can obtain two dimension angular information in real time, precision reaches 0.5 °, measuring distance scope: 200mm ~ 1000mm, precision 0.1mm;
wide spectral sun simulating light source: spectral band 0.4 ~ 2.5 μm, irradiates hot spot adjustable, power adjustable;
field spectroradiometer: locality matter sample spectrum, easy to carry, simple to operate, speed is fast, reliability is high, software function is powerful, is suitable for atural object sample spectral data surveying work, saving of labor, to save time and efficient.
More than to the detailed introduction carried out for the system of atural object sample spectra measurement provided by the present invention, apply specific embodiment herein to set forth the principle of the invention and embodiment, the explanation of above embodiment just understands method of the present invention and core concept thereof for helping; Meanwhile, for one of ordinary skill in the art, according to thought of the present invention, all will change in specific embodiments and applications.In sum, this description should not be construed as limitation of the present invention, and all those skilled in the art, all should be within the scope of the present invention under this invention's idea by the available technical scheme of logical analysis, reasoning, or a limited experiment.

Claims (15)

1. the multi-functional atural object sample spectra omnidirectional measurement system for spectral measurement, comprise wide spectral sun simulating light source, field spectroradiometer, power-supply system, ground matter sample rotating device, detector revolution device and tele-control system, it is characterized in that both can the indoor spectral measurement that also outdoor can carry out multifreedom controlling.
2. the multi-functional atural object sample spectra omnidirectional measurement system for spectral measurement according to claim 1, is characterized in that wide spectral sun simulating light source is made up of lighting source and optical alignment part.
3. the multi-functional atural object sample spectra omnidirectional measurement system for spectral measurement according to claim 1, is characterized in that power-supply system is current stabilization regulated power supply.
4. the multi-functional atural object sample spectra omnidirectional measurement system for spectral measurement according to claim 1, it is characterized in that ground matter sample rotating device is by 2-d rotating platform, rotation table control circuit, USB communicating circuit, governor circuit, Electric Machine Control power supply, upper computer software and slave computer software composition.
5. the multi-functional atural object sample spectra omnidirectional measurement system for spectral measurement according to claim 1, is characterized in that detector revolution device is made up of surface level whirligig and meridian ellipse sniffer.
6. the multi-functional atural object sample spectra omnidirectional measurement system for spectral measurement according to claim 1, is characterized in that tele-control system is made up of upper computer software and industrial computer.
7. wide spectral sun simulating light source according to claim 2, is characterized in that light source is spectrally similar to sunshine spectrum enough wide, utilizes optical collimator by source light beam collimation, to simulate parallel natural light irradiation.
8. power-supply system according to claim 3, it is characterized in that voltage one timing, size of current can carry out regulating and stablizing output.
9. matter sample rotating device according to claim 4ly, is characterized in that:
(1). 2-d rotating platform is made up of horizontal rotating table and pitching universal stage, and be fixed on by ground matter sample on universal stage and realize accurately controlling, control accuracy can reach 0.01 °.
(2). rotation table control circuit is controlled by motor control chip, utilizes external interface to be connected with universal stage, sends instruction control universal stage work by outer remote control system.
(3) whole control circuit is connected with remote system by external interface by .USB communicating circuit, for transmitting the steering order of tele-control system to governor circuit.
(4). governor circuit is the control circuit based on single-chip microcomputer, and one side receives the instruction row relax of going forward side by side that tele-control system sends and sends to circuit for controlling motor, and one side is monitored universal stage running constantly and sent tele-control system to constantly.
(5). Electric Machine Control power supply is mainly circuit and powers, and civil power is converted to galvanic current pressure.
(6). upper computer software is the graphical operation interface of writing, and for Long-distance Control, slave computer software is used for governor circuit and controls universal stage work.
10. detector revolution measurement mechanism according to claim 5, it is characterized in that surface level whirligig is made up of annular horizontal guide rail and disk, meridian ellipse sniffer is made up of meridian guide rail and retractor device.
11. tele-control systems according to claim 6, is characterized in that installing upper computer software with industrial computer, connect external control circuit can realize controlling by interface.
12. wide spectral sun simulating light sources according to claim 1,2,7, its spectral range is 200nm ~ 2500nm, and power is greater than 100W, and optical alignment part adopts K9 plano-convex lens.
13. according to claim 1,4,9 ground matter sample rotating device, adjustable pitching angular region-10 ° ~ 90 °, horizontal angle 0 ° ~ 360 °, precision reaches 0.01 °.
14. according to claim 1,5,10 detector revolution device, measuring distance scope is 200mm ~ 1000mm, precision 0.1mm, meridian angular setting scope: 0 ° ~ 90 °, horizontal angular range 0 ° ~ 360 °.
15. multi-functional atural object sample spectra omnidirectional measurement systems according to claim, illuminated part adopts absorbing material to cover, and reflects very little.
CN201410546684.5A 2014-10-16 2014-10-16 Multi-purpose omnibearing measuring system for spectrum of surface feature sample CN104316468A (en)

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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105137416A (en) * 2015-09-17 2015-12-09 中国科学院遥感与数字地球研究所 Hyperspectral laser radar target sample test apparatus and method
CN105158811A (en) * 2015-09-24 2015-12-16 河北省科学院地理科学研究所 Ground object spectrum acquisition device and acquisition method for simulating real scene
CN105259144A (en) * 2015-11-03 2016-01-20 西安工业大学 Large-dynamic-range omnibearing sample BRDF (bidirectional reflectance distribution function) measuring device
CN106230379A (en) * 2016-07-27 2016-12-14 天津三安光电有限公司 The detection device of a kind of multijunction solar cell chip and detection method
CN106546414A (en) * 2016-11-01 2017-03-29 北京理工大学 It is applied to the lens scalable test device and method of terahertz imaging system
CN106644960A (en) * 2016-12-14 2017-05-10 中国运载火箭技术研究院 Space target characteristic measuring system
CN106872023A (en) * 2017-04-28 2017-06-20 远方谱色科技有限公司 A kind of robot distribution photometer

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105137416A (en) * 2015-09-17 2015-12-09 中国科学院遥感与数字地球研究所 Hyperspectral laser radar target sample test apparatus and method
CN105158811A (en) * 2015-09-24 2015-12-16 河北省科学院地理科学研究所 Ground object spectrum acquisition device and acquisition method for simulating real scene
CN105158811B (en) * 2015-09-24 2016-07-06 河北省科学院地理科学研究所 The ground-object spectrum harvester of simulating reality scene and acquisition method
CN105259144A (en) * 2015-11-03 2016-01-20 西安工业大学 Large-dynamic-range omnibearing sample BRDF (bidirectional reflectance distribution function) measuring device
CN106230379A (en) * 2016-07-27 2016-12-14 天津三安光电有限公司 The detection device of a kind of multijunction solar cell chip and detection method
CN106546414A (en) * 2016-11-01 2017-03-29 北京理工大学 It is applied to the lens scalable test device and method of terahertz imaging system
CN106546414B (en) * 2016-11-01 2018-11-06 北京理工大学 Test device and method is adjusted in lens applied to terahertz imaging system
CN106644960A (en) * 2016-12-14 2017-05-10 中国运载火箭技术研究院 Space target characteristic measuring system
CN106644960B (en) * 2016-12-14 2019-09-06 中国运载火箭技术研究院 A kind of extraterrestrial target characteristic measuring system
CN106872023A (en) * 2017-04-28 2017-06-20 远方谱色科技有限公司 A kind of robot distribution photometer

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Application publication date: 20150128