CN101915615A - Portable field spectroradiometer - Google Patents
Portable field spectroradiometer Download PDFInfo
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- CN101915615A CN101915615A CN 201010228140 CN201010228140A CN101915615A CN 101915615 A CN101915615 A CN 101915615A CN 201010228140 CN201010228140 CN 201010228140 CN 201010228140 A CN201010228140 A CN 201010228140A CN 101915615 A CN101915615 A CN 101915615A
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Abstract
The invention discloses a portable field spectroradiometer comprising a preposition optical module, a beam split imaging module, a processing module and a control module. The preposition optical module is used for collecting target reflection light, collimating the collected light and outputting collimated light; the beam split imaging module comprises a linear gradual filter, a photoelectric converter and a photoelectric conversion driving circuit; the linear gradual filter is used for splitting collimated light output by the preposition optical module; the photoelectric conversion driving circuit is used for controlling the photoelectric converter, collecting spectrum after beam splitting by the linear gradual filter and outputting the collected spectrum data; the processing module is connected with the beam split imaging module and used for processing and displaying the spectrum data collected by the photoelectric converter; and the control module is used for transmitting control signals to the processing module and the photoelectric conversion driving circuit. The system has high operability, reliability and high sensitivity. The field spectroradiometer is simple in structure, small in volume and convenient to carry and use.
Description
Technical field
The present invention relates to the field spectroradiometer field, relate in particular to a kind of portable field spectroradiometer.
Background technology
Along with science and technology development, quick, harmless, economic spectral technique is widely used in every field such as industry spot detection, remote sensing, quality of agricultural product detection.The remote sensing field, but fields such as Field Mineral element check and analysis need a kind of easy to carry, precision is high, the spectral instrument of harmless and field condition operation.Field spectroradiometer is light source with the natural light, adopts the grating beam splitting device as dispersion element, the design of symmetrical expression Czerny-Turner optical table, thereby the volume of reduction total system.Field spectroradiometer mainly adopts fibre-optical probe to collect reflectance spectrum at present, and reflected light enters a slit, focuses on the detection means through collimation, grating beam splitting then again.The Fieldspe series that U.S. ASD company produces, SVC HR-1024 series field spectroradiometer, small and exquisite relatively volume is all arranged, be convenient for carrying, such spectrometer can make things convenient for, effectively the target area be measured by fibre-optical probe by spectrometer equipment is placed in the knapsack.
The field spectroradiometer that is used for the field condition operation at present can be put into spectrometer in the knapsack or on the support, by fibre-optical probe, comes detection of a target zone, therefore uses widely obtaining aspect remote sensing, the Field Mineral elements are contained.But the whole instrument volume still adopts traditional grating splitting system, the optical texture complexity, various so the volume of annex is difficult to further reduce, this class spectrometer price is still relatively more expensive and use fibre-optical probe to carry out spectra collection, optical fiber bends easy damage back and forth, and the maintenance cost height is also higher.
Summary of the invention
(1) technical matters that will solve
The objective of the invention is to reduce the volume of field spectroradiometer, make its use convenient, reduce maintenance cost, and keep the high resolving power of field spectroradiometer simultaneously.
(2) technical scheme
For achieving the above object, the present invention proposes a kind of portable field spectroradiometer, comprising:
Preposition optical module is used to collect target reflection light, the light of collecting collimated, and the light of output collimation;
The spectroscopic imaging module, it comprises linear gradient optical filter, photoelectric commutator and opto-electronic conversion driving circuit, described linear gradient optical filter carries out beam split to the light of the collimation of described preposition optical module output, described opto-electronic conversion driving circuit is controlled the spectrum of described photoelectric commutator collection after the beam split of described linear gradient optical filter, and the spectroscopic data of output collection;
Processing module is connected with described spectroscopic imaging module, and the spectroscopic data of described photoelectric commutator collection is handled and shown;
Control module is used for transmitting control signal to described processing module and opto-electronic conversion driving circuit.
Wherein, also comprise: place the catoptron between described preposition optical module and the described spectroscopic imaging module, be incident to described spectroscopic imaging module after the direction of propagation of the light that described catoptron will be put from the standard of described preposition optical module output changes 90 degree.
Wherein, described preposition optical module also comprises the CS interface.
Wherein, described linear gradient optical filter and described photoelectric commutator optics gummed.
Wherein, the face area of described linear gradient filtering piece is consistent with the window area of described photoelectric commutator, and distance between the two is 2.1mm.
Wherein, described processing module comprises: signal condition unit, data acquisition unit and power supply unit, described signal condition unit output to data acquisition unit after the spectroscopic data of input is nursed one's health, and described power supply unit is powered to described conditioning unit.
Wherein, also comprise upper computer module, itself and described processing module communicate by the usb data bus, are used to carry out the analysis of spectroscopic data.
Wherein, described photoelectric commutator is any one in CCD detecting device, PDA photodiode array, CMOS linear imaging detector array or the InGaAs linear imaging detector array.
Wherein, the spectral range of described linear gradient optical filter is 380-1100nm.
(3) beneficial effect
Technique scheme of the present invention has following advantage: by using the linear gradient optical filter as dispersion element in the spectroscopic imaging module, make that the structure of field spectroradiometer is simpler, volume is smaller and more exquisite, and is more durable; By between preposition optical module and spectroscopic imaging module, adding catoptron, further dwindled the volume of field spectroradiometer; Adopt the CS interface by preposition optical module, can change camera lens according to user's needs, the employed fibre-optical probe of abandoning tradition field spectroradiometer has reduced the maintenance cost that the fibre-optical probe easy damaged is brought; By the distance between linear gradual filter of accurate control and the detecting device, improved the optical resolution of spectrometer.
Description of drawings
Fig. 1 is the synoptic diagram according to the field spectroradiometer of one embodiment of the present invention;
Fig. 2 is the synoptic diagram according to the part of the field spectroradiometer of the adding catoptron of one embodiment of the present invention.
Embodiment
Below in conjunction with drawings and Examples, the specific embodiment of the present invention is described in further detail.Following examples are used to illustrate the present invention, but are not used for limiting the scope of the invention.
Be illustrated in figure 1 as the synoptic diagram of field spectroradiometer of the present invention, comprise preposition optical module 1, spectroscopic imaging module 2, processing module 3, control module 4.
Wherein, preposition optical module 1 is equipped with non-fibre-optical probe at its front end, is used for the collection target is diffused, the light of collecting is collimated, and the light that will collimate output; Spectroscopic imaging module 2 comprises linear gradient optical filter 6 (LVF, linear variable filter), CCD detecting device 7 and CCD driving circuit 8, the light of the collimation of 6 pairs of described preposition optical module 1 outputs of described linear gradient optical filter carries out beam split, the spectrum that the described CCD detecting device 7 of CCD driving circuit 8 controls is gathered after linear gradual filter 6 beam split, and the spectroscopic data of output collection; Processing module 3 is connected with spectroscopic imaging module 2 by internal data bus, thereby the spectroscopic data that CCD detecting device 7 is gathered is handled, analyzed and shows; Control module 4 embeds processing module 3, is used for transmitting control signal to processing module 3 and CCD driving circuit 8, thereby carries out the demonstration of spectroscopic data processing and spectrum.
Preferably, present embodiment can also comprise upper computer module 5, and itself and processing module 3 communicate by the usb data bus, thereby carries out the analysis of spectroscopic data.
In the present embodiment, preposition optical module 1 comprises the CS interface that places object lens and the collimating mirror after the non-fibre-optical probe and adopt standard, incident light after will collimating by the CS interface outputs in the spectroscopic imaging module 2, owing to adopted the CS interface, be equipped with the tight shot of a plurality of different focal, field angle, according to shooting distance and environmental differences, can choose dissimilar camera lenses, strengthened the simplicity of instrumentation.
In the present embodiment, the LVF 6 in the spectroscopic imaging module 2 is a dispersive optical element, is used to replace traditional dispersion element grating, prism etc., makes that the volume of field spectroradiometer is more small and exquisite, light.Usually 6 spectrum to certain wavelength coverage of linear gradient optical filter LVF play branch transmittance effect, and its spectral range can be 380-1100nm, and this example adopts JDSU620-10803 (C) molded lines optical filter, and its working range is 620-1100nm.
CCD detection means 7 in the spectroscopic imaging module 2 is a linear array, once can measure a plurality of points simultaneously, wavelength response and linear gradient optical filter 6 beam split wavelength band coupling are good, and possess high s/n ratio, high read-out speed, high sensitivity and can adapt to open-air treacherous environmental interference, the CCD detecting device can adopt in PDA photodiode array, CMOS linear imaging detector array or the InGaAs linear imaging detector array any one to substitute, and adopts the corresponding driving circuit.Present embodiment adopts the S8377-256Q linear array CMOS detection means of the loose company in Japanese shore and drives C9001.
Preferably, LVF6 adopts the optics gluing technique to be connected with CCD detection means 7, the window area basically identical of the face area of LVF6 and CCD detecting device, both distances are 2.1mm, thereby make from the light of LVF6 output and can be coupled into CCD detecting device 7 efficiently, thereby improved the resolution of field spectroradiometer.CCD driving circuit 8 and processing module 3 are connected by internal data line, and control module 4 is sent instruction by control treatment module 3 and made 8 work of CCD driving circuit, thereby driven CCD detecting device 7 carries out data acquisition.
Processing module 3 in the embodiments of the invention comprises signal condition unit 9, data acquisition unit 10, liquid crystal display (not shown), power supply unit 11, wherein signal condition unit 9 comprises signal amplification, filtering circuit, with AD translation function circuit, the signal of 10 pairs of modulate circuit outputs of data acquisition unit is gathered, thereby finishes the processing of the output signal of spectroscopic imaging module 2.The electric battery and the burning voltage circuit that comprise by power supply unit 11 are for other unit (for example, liquid crystal display and data acquisition unit 11) of processing module 3 and CCD driving circuit 8 etc. provide required direct-current working volts.
The control module 4 of present embodiment, comprise data analysis interface display unit 12, control system unit 13, by control module 4 is embedded processing module 3, hardware system is sent the work that each several part is finished in work order, comprise data acquisition, control integral time, the operation of dependent instructions such as data storage, data transmission, data analysis.
According to different field environments, control the shooting of carrying out on the different mode by control module 4, be optimized calculating required integral time, be embedded into again in the middle of the processing module 4 according to each wave band under the different mode, thereby when actual field work, select suitable mode of operation to carry out spectra collection.
The principle of work of embodiments of the invention as shown in Figure 1 is: be light source with the sunshine, target is through the diffuse reflection of the irradiation generation of sunlight, collect through preposition optical module 1 of the present invention, the collimation back arrives LVF6 and carries out beam split, CCD detection means 7 is started working under the driving of the acquired signal of the data acquisition unit 10 of processing module 3, automatically calculate the integral time of CCD and the spectrum after the LVF optical filtering is carried out data acquisition according to environment, till receiving that stopping acquired signal instructing, the signal that collects carries out signal by processing module 3 and amplifies, filtering, the AD conversion, thereby be presented at the spectrum figure on the liquid crystal display in real time, and carry out next step data acquisition, storage, the operation that transmission etc. are relevant, and processing module 3 and host computer 5 are communicated by the usb data bus, read and send data, carry out the post analysis of spectroscopic data and handle.
In another embodiment of the present invention, as shown in Figure 2, between preposition optical module 1 and spectroscopic imaging module 2, be equipped with catoptron 15, target object 14 produces diffuse reflection through the illumination of sunlight, collect by non-fibre-optical probe in the preposition optical system 1 and object lens, and process collimating mirror collimation is parallel beam, light beam behind the collimation by catoptron 15 (catoptron 15 by compose with preposition optical module 2 in lens barrel at 45), thereby the output light of preposition optical system 1 is transferred 90 °, enter spectroscopic imaging module 2 through the light after the reflection, the monochromatic light that light beam is divided into various wavelength by LVF6 of the present invention, CCD detecting device 7 is finished the collection to spectrum under the driving of CCD driving circuit 8, spectrum after the collection is through processing module 3, control module 4, carry out signal condition, automatically switch or the mode of operation and the spectral curve of manual switchover instrument are presented on the liquid crystal display of processing in real time according to environment.
The above only is embodiments of the present invention; should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the technology of the present invention principle; can also make some improvement and modification, these improve and modification also should be considered as protection scope of the present invention.
Claims (9)
1. a portable field spectroradiometer is characterized in that, comprising:
Preposition optical module is used to collect target reflection light, the light of collecting collimated, and the light of output collimation;
The spectroscopic imaging module, it comprises linear gradient optical filter, photoelectric commutator and opto-electronic conversion driving circuit, described linear gradient optical filter carries out beam split to the light of the collimation of described preposition optical module output, described opto-electronic conversion driving circuit is controlled the spectrum of described photoelectric commutator collection after the beam split of described linear gradient optical filter, and the spectroscopic data of output collection;
Processing module is connected with described spectroscopic imaging module, and the spectroscopic data of described photoelectric commutator collection is handled and shown;
Control module is used for transmitting control signal to described processing module and opto-electronic conversion driving circuit.
2. portable field spectroradiometer as claimed in claim 1, it is characterized in that, also comprise: place the catoptron between described preposition optical module and the described spectroscopic imaging module, be incident to described spectroscopic imaging module after the direction of propagation of the light that described catoptron will be put from the standard of described preposition optical module output changes 90 degree.
3. portable field spectroradiometer as claimed in claim 1 is characterized in that, described preposition optical module also comprises the CS interface.
4. portable field spectroradiometer as claimed in claim 3 is characterized in that, described linear gradient optical filter and described photoelectric commutator optics gummed.
5. portable field spectroradiometer as claimed in claim 4 is characterized in that the face area of described linear gradient filtering piece is consistent with the window area of described photoelectric commutator, and distance between the two is 2.1mm.
6. portable field spectroradiometer as claimed in claim 5, it is characterized in that, described processing module comprises: signal condition unit, data acquisition unit and power supply unit, described signal condition unit outputs to data acquisition unit after the spectroscopic data of input is nursed one's health, and described power supply unit is powered to described conditioning unit.
7. portable field spectroradiometer as claimed in claim 6 is characterized in that, also comprises upper computer module, and itself and described processing module communicate by the usb data bus, are used to carry out the analysis of spectroscopic data.
8. portable field spectroradiometer as claimed in claim 1 is characterized in that, described photoelectric commutator is any one in CCD detecting device, PDA photodiode array, CMOS linear imaging detector array or the InGaAs linear imaging detector array.
9. portable field spectroradiometer as claimed in claim 1 is characterized in that, the spectral range of described linear gradient optical filter is 380-1100nm.
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| CN 201010228140 CN101915615A (en) | 2010-07-08 | 2010-07-08 | Portable field spectroradiometer |
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| CN 201010228140 CN101915615A (en) | 2010-07-08 | 2010-07-08 | Portable field spectroradiometer |
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Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102967369A (en) * | 2012-11-29 | 2013-03-13 | 山东东仪光电仪器有限公司 | Hybrid spectrometer with charge coupled device (CCD) spectral signal |
| CN103471715A (en) * | 2013-09-02 | 2013-12-25 | 北京航空航天大学 | Common optical path combined optical field spectral imaging method and device |
| CN103512659A (en) * | 2012-06-19 | 2014-01-15 | 台湾超微光学股份有限公司 | Detachable peripheral device of spectrometer |
| CN104296870A (en) * | 2014-08-21 | 2015-01-21 | 中国科学院光电研究院 | Linear gradual filter type multispectral imager based on secondary imaging |
| CN104655275A (en) * | 2013-11-19 | 2015-05-27 | 南京理工大学 | Farm-oriented portable integrated spectrum device |
| CN105004424A (en) * | 2015-07-20 | 2015-10-28 | 中国科学院西安光学精密机械研究所 | Polarized spectrum imaging system and polarized spectrum information acquisition method |
| CN105547478A (en) * | 2016-01-27 | 2016-05-04 | 浙江大学 | Imaging spectrometer on the basis of etched diffraction grating |
| CN106153190A (en) * | 2016-06-16 | 2016-11-23 | 电子科技大学 | For obtaining spectral module and the bimodulus multiplex optical device of spectrum |
| CN106404176A (en) * | 2016-11-14 | 2017-02-15 | 长春工业大学 | Spectrum detection device and method based on integrated device |
| CN106525744A (en) * | 2016-12-22 | 2017-03-22 | 福州大学 | Micro food safety detection device and method based on spectrum technology |
| CN106940295A (en) * | 2017-05-16 | 2017-07-11 | 中国电子科技集团公司第四十研究所 | Ultra portable near-infrared spectrum analysis system based on gradual filter |
| CN107505266A (en) * | 2017-08-14 | 2017-12-22 | 重庆电子工程职业学院 | Semi-automatic optical testing and analysis system |
| CN109668869A (en) * | 2018-12-28 | 2019-04-23 | 中国科学院长春光学精密机械与物理研究所 | A kind of hand-held reflection Confocal laser-scanning microscopy detection device |
| CN109975219A (en) * | 2017-12-27 | 2019-07-05 | 上海德运光电技术有限公司 | A kind of portable type ground high-spectrum imager |
| CN110346310A (en) * | 2019-07-17 | 2019-10-18 | 昆山书豪仪器科技有限公司 | A kind of oil plant spectrometer and its spectroscopic acquisition circuit |
| CN113631908A (en) * | 2018-12-21 | 2021-11-09 | 纳米线科技公司 | Method, apparatus, system and device for mobile digital spatial profiling of pathological specimens |
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| US6630999B2 (en) * | 2001-05-01 | 2003-10-07 | Optical Coating Laboratory, Inc. | Color measuring sensor assembly for spectrometer devices |
| CN1811381A (en) * | 2006-01-24 | 2006-08-02 | 天津大学 | Spectrograph based on LVF |
| CN2919615Y (en) * | 2006-07-12 | 2007-07-04 | 福州高意通讯有限公司 | Solid laser of semiconductor pump |
Cited By (22)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103512659A (en) * | 2012-06-19 | 2014-01-15 | 台湾超微光学股份有限公司 | Detachable peripheral device of spectrometer |
| CN103512659B (en) * | 2012-06-19 | 2016-05-04 | 台湾超微光学股份有限公司 | Detachable peripheral device of spectrometer |
| CN102967369B (en) * | 2012-11-29 | 2016-03-30 | 山东东仪光电仪器有限公司 | There is the mixed light spectrometer of CCD spectroscopic acquisition system |
| CN102967369A (en) * | 2012-11-29 | 2013-03-13 | 山东东仪光电仪器有限公司 | Hybrid spectrometer with charge coupled device (CCD) spectral signal |
| CN103471715A (en) * | 2013-09-02 | 2013-12-25 | 北京航空航天大学 | Common optical path combined optical field spectral imaging method and device |
| CN103471715B (en) * | 2013-09-02 | 2015-09-09 | 北京航空航天大学 | A kind of light path combined type light field spectrum imaging method and device altogether |
| CN104655275B (en) * | 2013-11-19 | 2016-09-21 | 南京理工大学 | Agricultural portable integrated spectral device |
| CN104655275A (en) * | 2013-11-19 | 2015-05-27 | 南京理工大学 | Farm-oriented portable integrated spectrum device |
| CN104296870A (en) * | 2014-08-21 | 2015-01-21 | 中国科学院光电研究院 | Linear gradual filter type multispectral imager based on secondary imaging |
| CN105004424A (en) * | 2015-07-20 | 2015-10-28 | 中国科学院西安光学精密机械研究所 | Polarized spectrum imaging system and polarized spectrum information acquisition method |
| CN105547478A (en) * | 2016-01-27 | 2016-05-04 | 浙江大学 | Imaging spectrometer on the basis of etched diffraction grating |
| CN106153190A (en) * | 2016-06-16 | 2016-11-23 | 电子科技大学 | For obtaining spectral module and the bimodulus multiplex optical device of spectrum |
| CN106404176A (en) * | 2016-11-14 | 2017-02-15 | 长春工业大学 | Spectrum detection device and method based on integrated device |
| CN106525744A (en) * | 2016-12-22 | 2017-03-22 | 福州大学 | Micro food safety detection device and method based on spectrum technology |
| CN106940295A (en) * | 2017-05-16 | 2017-07-11 | 中国电子科技集团公司第四十研究所 | Ultra portable near-infrared spectrum analysis system based on gradual filter |
| CN106940295B (en) * | 2017-05-16 | 2019-07-30 | 中国电子科技集团公司第四十一研究所 | Ultra portable near-infrared spectrum analysis system based on gradual filter |
| CN107505266A (en) * | 2017-08-14 | 2017-12-22 | 重庆电子工程职业学院 | Semi-automatic optical testing and analysis system |
| CN107505266B (en) * | 2017-08-14 | 2023-08-25 | 重庆电子工程职业学院 | Semi-automatic optical detection analysis system |
| CN109975219A (en) * | 2017-12-27 | 2019-07-05 | 上海德运光电技术有限公司 | A kind of portable type ground high-spectrum imager |
| CN113631908A (en) * | 2018-12-21 | 2021-11-09 | 纳米线科技公司 | Method, apparatus, system and device for mobile digital spatial profiling of pathological specimens |
| CN109668869A (en) * | 2018-12-28 | 2019-04-23 | 中国科学院长春光学精密机械与物理研究所 | A kind of hand-held reflection Confocal laser-scanning microscopy detection device |
| CN110346310A (en) * | 2019-07-17 | 2019-10-18 | 昆山书豪仪器科技有限公司 | A kind of oil plant spectrometer and its spectroscopic acquisition circuit |
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Application publication date: 20101215 |