Infrared hyperspectral detection device and method

Abstract

The present invention provides an infrared hyperspectral detection device and method, including an optical fiber probe assembly and a detection sample placement assembly, wherein the optical fiber probe assembly includes a light source emitting unit and a spectrum detection unit disposed on one side of the light source emitting unit; the detection sample placement assembly is disposed on the lower side of the optical fiber probe assembly, and includes placement boxes of different colors, wherein the placement boxes of set colors are used to place samples to be tested of corresponding shapes; wherein the light source emitting unit is used to emit optical full-spectrum light to the samples to be tested, and the spectrum detection unit is used to obtain the reflected hyperspectral information of the samples to be tested. The infrared hyperspectral detection device and method provided by the present invention can enhance the spectrum of the samples to be tested, and can also absorb background interference light, thereby reducing the influence of the environmental background on the spectrum of the samples to be tested.

Description

Technical Field

[0001] The present invention relates to the technical field of optical monitoring and analysis, and in particular to an infrared hyperspectral detection device and method. Background Art

[0002] As people pay more and more attention to environmental pollution, rapid monitoring and analysis technology of pollutants is becoming more and more important. Among them, infrared spectroscopy reflects the selective absorption characteristics of material molecules. Using ground infrared spectroscopy technology, without chemical reagents, it can achieve rapid monitoring and quantitative / semi-quantitative analysis of material components.

[0003] Current ground infrared measurement instruments mainly include indoor spectral measurement instruments and field spectral measurement equipment.

[0004] Indoor spectrum measurement instruments are mainly used for high-precision infrared spectrum measurement and analysis in laboratories. The spectral data obtained by indoor spectrum measurement instruments have high quality and accuracy, meeting the needs of high-precision infrared spectrum analysis. However, indoor spectrum measurement instruments are generally large in size, heavy in weight, and complex to operate, which is not convenient for field measurements and difficult to meet the needs of rapid monitoring under field survey conditions.

[0005] Field spectral measurement equipment is mainly used for ground authenticity verification, ground verification, and spectral measurement of ground object components in remote sensing monitoring. There are many types of field spectral measurement equipment, which are relatively small in size and simple to operate. They are widely used to quickly obtain spectral data of vegetation, water bodies, soil, rocks and other ground objects. However, due to the influence of the diverse environment in the field, the quality of spectral acquisition is not high and the comparability of data is poor. Summary of the invention

[0006] The present invention provides an infrared hyperspectral detection device and method, which are used to solve the defects of the prior art in that the spectrum acquisition quality is not high and the data comparability is poor due to the influence of the diverse outdoor environment. The device and method can remove the environmental background spectrum characteristics and obtain high-quality spectrum information.

[0007] The present invention provides an infrared hyperspectral detection device, comprising:

[0008] The optical fiber probe assembly comprises a light source emitting unit and a spectrum detection unit arranged on one side of the light source emitting unit;

[0009] A detection sample placement component is arranged at the lower side of the optical fiber probe component, and includes placement boxes of different colors, and the placement boxes of set colors are used to place samples to be tested in corresponding shapes;

[0010] Among them, the light source emitting unit is used to emit full-spectrum optical light to the sample to be tested, and the spectrum detection unit is used to obtain the reflected hyperspectral information of the sample to be tested.

[0011] In one embodiment, the detection sample placement assembly is vertically arranged at the lower side of the optical fiber probe assembly, so that the light source emitting unit and the spectrum detection unit are respectively perpendicular to the surface of the sample to be detected.

[0012] In one embodiment, the placement box includes a black placement box and a white placement box, the black placement box is used to place a solid sample to be tested, and the white placement box is used to place a liquid sample to be tested.

[0013] In one embodiment, it further includes:

[0014] The probe adjustment assembly is arranged on the upper side of the optical fiber probe assembly and is used to adjust the distance between the optical fiber probe assembly and the surface of the sample to be measured.

[0015] In one embodiment, it further includes:

[0016] The light source assembly is connected to the light source emitting unit and is used to generate the optical full-spectrum light required by the light source emitting unit.

[0017] In one embodiment, the operating spectrum of the light source assembly ranges from 340nm to 2000nm.

[0018] In one embodiment, it further includes:

[0019] The spectrometer component is connected to the spectrum detection unit and is used to determine the spectrum detection parameters of the sample to be tested and collect hyperspectral data.

[0020] In one embodiment, the working spectrum of the spectrometer component ranges from 200 nm to 1100 nm.

[0021] In one embodiment, it further includes:

[0022] The intelligent control component is connected to the spectrometer component and is used to adjust relevant parameters of the spectrometer component according to feedback parameters of the spectrometer component and process acquired sample hyperspectral data.

[0023] The present invention also provides an infrared hyperspectral detection method, comprising:

[0024] Place the sample to be tested in the placement box of the corresponding color;

[0025] Placing the placement box under the light source emitting unit and the spectrum detection unit;

[0026] The light source emitting unit emits full-spectrum optical light to the sample to be tested;

[0027] Based on the optical full-spectrum light, the spectrum detection unit obtains the reflected hyperspectral information of the sample to be tested.

[0028] The infrared hyperspectral detection device and method provided by the present invention can enhance the spectrum of the sample to be tested, absorb background interference light, and reduce the influence of the environmental background on the spectrum of the sample to be tested by placing the sample to be tested in the corresponding shape in the placing boxes of set colors through placing boxes of different colors. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0030] Figure 1 It is a schematic cross-sectional structure diagram of an infrared hyperspectral detection device provided by an embodiment of the present invention;

[0031] Figure 2 It is a structural schematic diagram of an infrared hyperspectral detection device provided by an embodiment of the present invention;

[0032] Figure 3 is a structural schematic diagram of an infrared hyperspectral detection device provided by another embodiment of the present invention;

[0033] Figure 4 is a structural schematic diagram of an infrared hyperspectral detection device provided by another embodiment of the present invention;

[0034] Figure 5 It is a flow chart of the infrared hyperspectral detection method provided by an embodiment of the present invention.

[0035] Reference numerals:

[0036] 110: optical fiber probe assembly; 111: light source emitting unit; 112: spectrum detection unit; 120: detection sample placement assembly; 121: placement box; 130: probe adjustment assembly; 140: sample detection darkroom; 150: light source assembly; 160: spectrometer assembly; 170: intelligent control assembly; 180: power supply assembly; 190: housing. DETAILED DESCRIPTION

[0037] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be clearly and completely described below in conjunction with the drawings of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0038] Figure 1 This is a schematic cross-sectional structure diagram of an infrared hyperspectral detection device provided in an embodiment of the present application. Figure 2 This is a schematic diagram of the structure of the infrared hyperspectral detection device provided in an embodiment of the present application.

[0039] Figure 3 It is a structural schematic diagram of the functional modules of the infrared hyperspectral detection device of all embodiments of the present invention, showing the structure of the probe adjustment component, the sample detection darkroom, the light source component, the spectrometer component, the intelligent control component, and the power supply component. The structures of the various components in all the following embodiments can be referred to Figure 3 .

[0040] Figure 4 It is a structural schematic diagram of integrating the functional modules of the infrared hyperspectral detection device of all embodiments of the present invention into a housing.

[0041] Reference Figure 1 and Figure 2 The present application embodiment provides an infrared hyperspectral detection device, which may include:

[0042] The optical fiber probe assembly 110 includes a light source emitting unit 111 and a spectrum detection unit 112 disposed on one side of the light source emitting unit 111;

[0043] Specifically, one end of the light source emitting unit 111 and the spectrum detecting unit 112 are integrated into one optical fiber probe, and the other ends are respectively integrated into respective optical fiber probes.

[0044] The detection sample placement component 120 is arranged at the lower side of the optical fiber probe component 110, and includes placement boxes 121 of different colors. The placement boxes 121 of set colors are used to place samples to be tested in corresponding shapes;

[0045] The light source emitting unit 111 is used to emit full-spectrum optical light to the sample to be tested, and the spectrum detection unit 112 is used to obtain the reflected hyperspectral information of the sample to be tested.

[0046] After the light source emitting unit 111 is used to emit full-spectrum optical light to the sample to be tested, the light is reflected on the surface of the sample to be tested, or is projected through the sample to be tested and then reflected by the placement box 121, depending on the shape of the sample to be tested, so that the spectrum detection unit 112 can obtain the reflected hyperspectral information of the sample to be tested. On the other hand, the placement boxes 121 of different colors set according to the different shapes of the samples to be tested can absorb background interference light and reduce the influence of the environmental background on the spectrum of the sample to be tested.

[0047] Based on the above embodiment, as an optional embodiment, the detection sample placement assembly 120 is vertically arranged on the lower side of the optical fiber probe assembly 110 so that the light source emitting unit 111 and the spectrum detection unit 112 are respectively perpendicular to the surface of the sample to be detected.

[0048] By setting the color of the placement box 121, the problem that in the traditional measurement method of liquid samples, the light source emitting unit 111 and the spectrum detection unit 112 cannot be perpendicular to the surface of the sample to be measured in a set shape, must be in the same direction, and have a certain angle with the surface of the sample to be measured, making it difficult to carry out portable integration of the full spectrum measurement equipment can be solved. The light source emitting unit 111 and the spectrum detection unit 112 are respectively perpendicular to the surface of the sample to be measured, which can realize the portable integrated setting of infrared hyperspectral detection devices and full spectrum detection devices for samples of different shapes.

[0049] Based on the above embodiment, as an optional embodiment, the placement box 121 includes a black placement box and a white placement box, the black placement box is used to place solid samples to be tested, and the white placement box is used to place liquid samples to be tested.

[0050] The optical full spectrum light emitted by the light source emitting unit 111 is transmitted through the liquid sample to be tested, and then through multiple reflections of the white placement box, and then through the liquid sample to be tested, it is transmitted to the spectrum detection unit 112, thereby enhancing the direct reflection of the liquid sample to be tested itself, as well as the spectrum characteristics of the liquid sample to be tested after transmission and re-reflection. The spectrum of the enhanced liquid sample to be tested is subtracted from the spectrum information of the background to obtain the spectrum characteristic information of the sample to be tested, thereby removing the influence of the environmental background. On the one hand, it solves the problem that the reflectivity spectrum value measured by the traditional method is very small and difficult to meet the data analysis due to the strong ability of the liquid sample to be tested to absorb electromagnetic waves. On the other hand, it solves the problem that in the traditional measurement method caused by the mirror reflection of the liquid sample to be tested, the light source emitting unit 111 and the spectrum detection unit 112 cannot be perpendicular to the water surface, must be in the same direction, and have a certain angle with the water surface, which makes it difficult to carry out portable integration of the full spectrum measurement equipment of the liquid sample to be tested.

[0051] The optical full-spectrum light emitted by the light source output unit 111 is reflected by the solid sample to be tested and then transmitted to the spectrum detection unit 112. By selecting a black placement box, the full spectrum measurement of the solid sample to be tested can be directly obtained. Since the reflectivity of the solid sample to be tested is relatively high, the black placement box can absorb background interference light and reduce the impact of the environmental background on the sample spectrum. The sample spectrum measurement device designed and implemented by the present invention realizes the integrated measurement of spectra across liquid and solid samples. The liquid sample to be tested can be a water body, and the solid sample to be tested can be soil, etc. Therefore, the sample spectrum measurement device designed and implemented by the present invention realizes the integrated measurement of spectra across liquid and solid samples such as water bodies and soil.

[0052] The structures of the following optional embodiments can all be referred to Figure 3 .

[0053] Based on the above embodiment, as an optional embodiment, the infrared hyperspectral detection device provided by the present invention further includes:

[0054] The probe adjustment assembly 130 is disposed on the upper side of the optical fiber probe assembly 110 and is used to adjust the distance between the optical fiber probe assembly 110 and the surface of the sample to be measured.

[0055] The probe adjustment assembly 130 is a mechanical thread adjustment structure. The distance between the optical fiber probe assembly 110 and the surface of the sample to be tested is adjusted by mechanical rotation of the thread. The optimal spectral detection distance can be selected according to the spectral reflectivity characteristics and geometric dimensions of the sample to be tested, thereby solving the problem that the current infrared spectral detection distance is fixed and cannot adapt to various types of ground samples.

[0056] Based on the above embodiment, as an optional embodiment, the infrared hyperspectral detection device provided by the present invention further includes:

[0057] The sample detection darkroom 140 includes a cavity for accommodating the detection sample placement assembly 120, the light probe assembly is arranged on the upper side of the sample detection darkroom 140, and the light source emitting unit 111 and the spectrum detection unit 112 extend into the cavity. The probe adjustment assembly 130 is arranged above the light probe assembly. The sample detection darkroom 140 is black, providing a stable measurement environment to prevent the measured sample spectrum from being affected by the surrounding environment. According to the form of the sample to be tested, if it is a solid sample to be tested, the sample to be tested is placed in a black measuring box, the measuring box is placed on the black placement box, and finally the black placement box is placed in the sample detection darkroom 140 to perform spectrum detection. If it is a liquid sample to be tested, the sample to be tested is placed in a transparent measuring cup, the measuring cup is placed on the white placement box, and finally the white placement box is placed in the sample detection darkroom 140 to perform spectrum detection.

[0058] Based on the above embodiment, as an optional embodiment, the infrared hyperspectral detection device provided by the present invention further includes:

[0059] The light source assembly 150 is connected to the light source emitting unit 111 and is used to generate light required by the light source emitting unit 111. Specifically, the light source assembly 150 may be a halogen light source.

[0060] Based on the above embodiment, as an optional embodiment, the working spectrum of the light source assembly 150 has a value range of 340nm-2000nm. Specifically, the working spectrum of the light source assembly 150 can have a value range of 340nm-900nm.

[0061] Based on the above embodiment, as an optional embodiment, the infrared hyperspectral detection device provided by the present invention further includes:

[0062] The spectrometer component 160 is connected to the spectrum detection unit 112 and is used to determine the spectrum detection parameters of the sample to be tested. The size of the spectrometer component 160 can be selected to be smaller as appropriate to make the structure of the device more compact.

[0063] Based on the above embodiment, as an optional embodiment, the working spectrum of the spectrometer component 160 ranges from 200nm to 1100nm. Specifically, the working spectrum of the spectrometer component 160 can range from 340nm to 900nm, and the spectrum resolution can range from 0.1nm to 1nm.

[0064] Based on the above embodiment, as an optional embodiment, the infrared hyperspectral detection device provided by the present invention further includes:

[0065] The intelligent control component 170 is connected to the spectrometer component 160 and is used to adjust the relevant parameters of the spectrometer component 160 according to the feedback parameters of the spectrometer component 160. The intelligent control component 170 can also be used to perform various types of processing and analysis on the spectral data collected by the spectrometer component 160. The intelligent control component 170 can also be used to power the spectrometer component 160 and control its opening and closing.

[0066] The detection sample placement component 120 is provided with a standard white board. When the power of the light source component 150 is turned on, the light source component 150 emits light, and the light is emitted to the standard white board through the light source emission unit 111. After the light is reflected by the standard white board, it is projected to the spectrum detection unit 112. The spectrum detection unit 112 transmits the captured information to the spectrometer component 160, and the spectrometer component 160 performs detection, analysis and recording. In this process, the distance between the light probe component and the standard white board can also be adjusted through the probe adjustment component 130.

[0067] The intelligent control component 170 is used to adjust the relevant parameters of the spectrometer component 160 according to the feedback parameters of the spectrometer component 160, including: operating the software system of the intelligent control component 170, obtaining the standard whiteboard spectrum data of the spectrometer component 160, and using the obtained standard whiteboard spectrum data for whiteboard correction of the measured spectrum data.

[0068] The intelligent control component 170 is used to adjust the relevant parameters of the spectrometer component 160 according to the feedback parameters of the spectrometer component 160, and also includes: operating the software system of the intelligent control component 170, obtaining the dark current spectrum data of the spectrometer component 160, and using the obtained dark current spectrum data for dark current correction of the measured spectrum data.

[0069] Reference Figure 4 Based on the above embodiment, as an optional embodiment, the infrared hyperspectral detection device provided by the present invention further includes:

[0070] The power supply component 180 and the shell 190, the power supply component 180 supplies power to the intelligent control component 170 and the light source component 150, turn on the system power switch, the power supply component 180 starts to supply power to the intelligent control component 170 and the light source component 150, turn on the intelligent control component 170, the intelligent control component 170 supplies power to the spectrometer component 160, and controls the spectrometer component 160 to turn on.

[0071] The optical fiber probe assembly 110, the test sample placement assembly 120, the probe adjustment assembly 130, the sample test darkroom 140, the light source assembly 150, the spectrometer assembly 160, the intelligent control assembly 170 and the power supply assembly 180 are all integrated in the housing 190. A handle can be provided on the surface of the housing 190 for easy carrying. In addition, the housing 190 is also provided with a window, which is consistent with the display screen of the intelligent control assembly 170, so as to facilitate viewing of the infrared hyperspectral test results of the sample to be tested.

[0072] The infrared hyperspectral detection method provided by the present invention is described below. The infrared hyperspectral detection method described below and the infrared hyperspectral detection device described above can be referred to each other.

[0073] Figure 5 This is a flow chart of the infrared hyperspectral detection method provided in the embodiment of the present application. Figure 5 , the present application embodiment provides an infrared hyperspectral detection method, comprising:

[0074] S1, place the sample to be tested in a placement box of corresponding color;

[0075] S2, placing the placement box under the light source emitting unit and the spectrum detection unit;

[0076] S3, the light source emitting unit emits full-spectrum optical light to the sample to be tested;

[0077] S4, based on the optical full-spectrum light, the spectrum detection unit obtains the reflected hyperspectral information of the sample to be tested.

[0078] After the light source emitting unit is used to emit full-spectrum optical light to the sample to be tested, the light is reflected on the surface of the sample to be tested, or is projected by the sample to be tested and then reflected by the placement box, depending on the shape of the sample to be tested, so that the spectrum detection unit can obtain the reflected hyperspectral information of the sample to be tested. On the other hand, the placement boxes of different colors set according to the different shapes of the samples to be tested can absorb background interference light and reduce the influence of the environmental background on the spectrum of the sample to be tested.

[0079] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. An infrared hyperspectral detection device, characterized in that: include: The optical fiber probe assembly comprises a light source emitting unit and a spectrum detection unit arranged on one side of the light source emitting unit; A detection sample placement component is arranged at the lower side of the optical fiber probe component, and includes placement boxes of different colors, and the placement boxes of set colors are used to place samples to be tested in corresponding shapes; Wherein, the light source emitting unit is used to emit full-spectrum optical light to the sample to be tested, and the spectrum detection unit is used to obtain the reflected hyperspectral information of the sample to be tested; The detection sample placement assembly is vertically arranged at the lower side of the optical fiber probe assembly, so that the light source emitting unit and the spectrum detection unit are respectively perpendicular to the surface of the sample to be detected; The placement box includes a black placement box and a white placement box, the black placement box is used to place a solid sample to be tested, and the white placement box is used to place a liquid sample to be tested; The optical full-spectrum light emitted by the light source output unit is transmitted through the liquid sample to be tested, and then reflected multiple times by the white placement box, and then transmitted to the spectrum detection unit through the liquid sample to be tested, thereby enhancing the direct reflection of the liquid sample to be tested itself and the spectral characteristics of the liquid sample to be tested after transmission and reflection.

2. The infrared hyperspectral detection device according to claim 1, characterized in that: Also includes: The probe adjustment assembly is arranged on the upper side of the optical fiber probe assembly and is used to adjust the distance between the optical fiber probe assembly and the surface of the sample to be measured.

3. The infrared hyperspectral detection device according to claim 1, characterized in that: Also includes: The light source assembly is connected to the light source emitting unit and is used to generate the optical full-spectrum light required by the light source emitting unit.

4. The infrared hyperspectral detection device according to claim 3, characterized in that: The working spectrum of the light source assembly ranges from 340nm to 2000nm.

5. The infrared hyperspectral detection device according to claim 1, characterized in that: Also includes: The spectrometer component is connected to the spectrum detection unit and is used to determine the spectrum detection parameters of the sample to be tested and collect hyperspectral data.

6. The infrared hyperspectral detection device according to claim 5, characterized in that: The working spectrum of the spectrometer component ranges from 200nm to 1100nm.

7. The infrared hyperspectral detection device according to claim 5, characterized in that: Also includes: The intelligent control component is connected to the spectrometer component and is used to adjust relevant parameters of the spectrometer component according to feedback parameters of the spectrometer component and process acquired sample hyperspectral data.

8. An infrared hyperspectral detection method, characterized in that: The infrared hyperspectral detection device according to any one of claims 1 to 7 is implemented, comprising: Place the sample to be tested in the placement box of the corresponding color; Placing the placement box under the light source emitting unit and the spectrum detection unit; The light source emitting unit emits full-spectrum optical light to the sample to be tested; Based on the optical full-spectrum light, the spectrum detection unit obtains the reflected hyperspectral information of the sample to be tested.

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