CN211453361U - Fluorescence peroxide excitation detection device based on image analysis - Google Patents
Fluorescence peroxide excitation detection device based on image analysis Download PDFInfo
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- CN211453361U CN211453361U CN201922295222.1U CN201922295222U CN211453361U CN 211453361 U CN211453361 U CN 211453361U CN 201922295222 U CN201922295222 U CN 201922295222U CN 211453361 U CN211453361 U CN 211453361U
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Abstract
The utility model discloses an arouse fluorescence peroxide detection device based on image analysis. The utility model comprises a detecting wafer bearing device, a box body cover, an air inlet device, an exhaust device, an air inlet pipeline, an exhaust pipeline, an air pump, an excitation light source, an image acquisition device and an image processing circuit; reacting a substance to be detected with a detection wafer, generating fluorescence after excitation light irradiation, shooting an image of the detection wafer by an image acquisition device, acquiring the image by the image acquisition device, transmitting the image to an image processing circuit, and judging whether the image is peroxide or not by processing the image; the device of the utility model has simple structure, and can realize the rapid detection of the peroxide; the change of a detection wafer before and after detecting a substance to be detected can be judged whether the substance is peroxide or not only by adopting a CCD industrial camera for shooting and then processing images; the method of the utility model has simple and clear idea; the rapid detection can be realized; trace detection can be realized.
Description
Technical Field
The utility model relates to a dangerous explosive detects the field, concretely relates to arouse fluorescence peroxide detection device based on image analysis.
Background
Along with the emergence and application of novel explosives, the anti-terrorism pressure is increasing, and simultaneously, great challenges are provided for security systems in public places. The novel peroxide explosive is difficult to detect in a non-contact way due to the characteristics of the novel peroxide explosive.
In view of the phenomenon, various explosive detection technologies in recent years are investigated and analyzed, and the main technical characteristics of the existing products are found as follows:
(1) the ion mobility spectrometry technology represents that products comprise American Smith IONSCAN series products. The method is a normal-pressure analytical chemical method for detecting and identifying different types of substances based on the mobility of gas-phase ions in a weak electric field. The technology is suitable for trace detection, has wide application range and is convenient to use; however, the radioactive material is required to be ionized, the preheating time is long, and the price is high.
(2) Chemical colorimetric technique, representing the product having Israel IDenta Corp explosive test card set. Different chromatograms obtained by chemical reactions are analyzed by mixing with specific molecules. The technology has high response speed and can perform poison and explosion dual-mode analysis; but the unknown object needs to be checked for many times, and the sampling quantity is higher.
(3) Raman spectrum technology, which represents the product of the American B & W Tek NanoRam series. Diffraction echoes generated by irradiation of a laser light source above 780nm are compared with a known detection object storage echo database for analysis. The technology has low false alarm rate and wide application range, and can detect most chemicals; however, the laser light source has high energy density, so that the black explosive is very easy to ignite, and the detected object needs to reach gram level, so that trace detection cannot be realized.
(4) Fluorescence quenching technology, which represents the product of the FILR Fido series in the United states. The principle is that certain fluorescent conjugated polymers coated on carbon-silicon nanotubes and irradiated by ultraviolet rays generate quenching fluorescence action aiming at specific groups (such as nitro) of explosives, and the frequency of the radiated light is qualitatively identified. The technology has extremely high response speed and can realize nanogram to picogram trace detection; but the detection effect on non-nitro explosives is poor and the price is high.
Therefore, by researching a novel detection method, the rapid trace detection is realized, and the method has great significance for protecting national safety and the safety of lives and properties of people.
Disclosure of Invention
For can carry out quick, convenient, accurate detection to the peroxide explosive, the utility model provides an arouse fluorescence peroxide detection device based on image analysis.
The utility model discloses an arouse fluorescence detection device based on image analysis includes: the device comprises a detection wafer bearing device, a box body cover, an air inlet device, an air outlet device, an air inlet pipeline, an air outlet pipeline, an air pump, an excitation light source, an image acquisition device and an image processing circuit; wherein, the box body is a shell with a hollow interior; a box cover is arranged at the top of the box body; the front wall of the box body is provided with a mounting through hole, and the detection wafer bearing device is placed in the box body through the mounting through hole; the detection wafer is placed on the detection wafer bearing device; one side wall of the box body is provided with an air inlet through hole, the air inlet device extends into the box body from the outside of the box body through the air inlet through hole, and an air inlet pipeline outside the box body is connected with the air inlet device; an exhaust through hole is formed in the side wall of the box body, which is opposite to the air inlet through hole, and the exhaust device extends out of the box body from the box body through the exhaust through hole; the exhaust device is connected to the air pump through an exhaust pipeline; an excitation light source is arranged on the inner surface of the box body cover; a light-transmitting window is arranged on the box body cover; the image acquisition device is over against the detection wafer in the box body through the light transmission window; the image acquisition device is connected to the image processing circuit.
The fluorescence excitation detection device has a wiping mode and an adsorption mode; before detection, the air pump cleans the box body through the exhaust device through the exhaust pipeline, the excitation light source emits excitation light to irradiate on the detection wafer, the image acquisition device shoots an image of the detection wafer and transmits the image to the image processing circuit, and blank reference gray level average values of R, G and B are obtained through processing the image; in the wiping mode, the substance to be detected is dripped on the surface of the detection wafer, and the detection wafer is placed in the box body through the detection wafer bearing device; in the adsorption mode, the air pump forms negative pressure in the box body through the exhaust pipeline and the exhaust device, and the substance to be detected is conveyed to the detection wafer in the box body through the air inlet pipeline and the air inlet device; an excitation light source emits excitation light to irradiate on the detection wafer, the substance to be detected reacts with the detection wafer, fluorescence is generated after the excitation light irradiates, the image of the detection wafer is shot by the image acquisition device and is transmitted to the image processing circuit, the gray level average value of R, G and the substance to be detected B is obtained through processing the image and is compared with the blank reference gray level average value of R, G and B respectively, the difference value of the substance to be detected of R, G and B is obtained and is compared with the detection limit of R, G and B, and whether the substance to be detected is peroxide or not is judged.
The detecting wafer bearing device comprises: the device comprises a baffle plate, a sealing plate, a bearing plate and a handle; wherein, the outer surface of the vertical baffle is provided with a handle; a horizontal bearing plate is arranged in the center of the inner surface of the baffle; a sealing plate is arranged on the inner surface of the baffle plate and around the bearing plate; the upper surface of the bearing plate is provided with a bearing groove; the detection wafer is placed on the bearing groove.
Set up the installation through-hole at the antetheca of box and include: the mounting groove and the sealing plate through hole; the front wall of the box body is provided with a mounting groove matched with a baffle of the wafer bearing device, the center of the mounting groove is provided with a sealing plate through hole, the sealing plate through hole is matched with the sealing plate, and the air tightness of the box body is ensured in an adsorption mode; and two inside walls of the box body are respectively provided with a horizontal sliding groove matched with the bearing plate, and the bearing plate extends into the box body along the sliding groove through the sealing plate through hole.
The gas inlet device is a pipeline for conveying gas, the interior of the gas inlet device is hollow, the rear part of the outer wall of the gas inlet device is provided with a plurality of circular truncated cone-shaped bosses, and the front part extending into the box body is of a bent pipe structure so as to ensure that gaseous substances to be detected are conveyed onto the detection wafer through the bent pipe; the air inlet pipeline is connected through the circular truncated cone-shaped boss, and the circular truncated cone-shaped boss can prevent the air inlet pipeline from falling off.
Exhaust apparatus is the pipeline of conveying gas, and inside cavity, the front portion of outer wall have a plurality of round platform shape bosss, for the straight tube structure, connects exhaust pipe through round platform shape boss, and exhaust pipe is connected to the air pump, and round platform shape boss can prevent that exhaust pipe from droing. The air inlet pipeline and the exhaust pipeline are hoses for conveying air. The air inlet device and the exhaust device are sealed with the box body. When the adsorption mode is adopted, the air pump is opened, negative pressure exists in the box body, the substance to be detected is located at the inlet of the air inlet pipeline and is sucked into the detection wafer in the box body through the air inlet device via the air inlet pipeline.
The box body cover is matched with the box body, so that the sealing performance of the box body in an adsorption mode is ensured; the middle of the glass is provided with a light through hole, and high-transmittance glass is arranged on the light through hole so as to form a light through window; the image acquisition device and the light-transmitting window are coaxially and hermetically mounted, so that the image acquisition device can be ensured to be right opposite to the detection wafer. The excitation light source is hermetically arranged in the box body cover through the small holes on the periphery of the box body cover, so that the excitation light can shine on the detection wafer.
Adopting a wiping mode when the substance to be detected is in a liquid state; and when the substance to be detected is in a gas state or a volatile liquid state or a solid state, an adsorption mode is adopted.
The image acquisition device adopts a CCD industrial camera.
The detection wafer is characterized in that C6NIB solution is dripped on an aluminum foil silicon rubber plate, and after the C6NIB reacts with peroxide, fluorescence is generated under the irradiation of exciting light. The wavelength of the excitation light is 365nm +/-10 nm or 458 +/-10 nm.
The chemical formula of C6NIB is as follows:
2-hexyl-6-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-benzo-[de]isoquinoline-1,3(2H)-dione
the structural formula of C6NIB is as follows:
the utility model has the advantages that:
the device of the utility model has simple structure, and can realize the rapid detection of the peroxide; the change of a detection wafer before and after detecting a substance to be detected can be judged whether the substance is peroxide or not only by adopting a CCD industrial camera for shooting and then processing images; the method of the utility model has simple and clear idea; the rapid detection can be realized; trace detection can be realized.
Drawings
Fig. 1 is an external schematic view of an embodiment of the image analysis-based excited fluorescence peroxide detection device of the present invention, wherein (a) is an external schematic view and (b) is an external perspective view;
FIG. 2 is a diagram of the internal structure of the housing of one embodiment of the device for detecting excited fluorescence peroxide based on image analysis;
FIG. 3 is a schematic view of a device for detecting wafer loading according to an embodiment of the present invention for detecting excited fluorescence peroxide based on image analysis;
FIG. 4 is a schematic view of an air inlet device of an embodiment of the device for detecting excited fluorescence peroxide based on image analysis according to the present invention;
FIG. 5 is a schematic view of an exhaust of one embodiment of the device for image analysis based excited fluorescence peroxide detection according to the present invention;
FIG. 6 is a schematic view of a housing cover of an embodiment of the device for image analysis based excited fluorescence peroxide detection according to the present invention;
FIG. 7 is a calibration flowchart of the detection method of the fluorescence peroxide excitation detection device according to the present invention;
fig. 8 is a detection flow chart of the detection method of the excited fluorescence peroxide detection device based on image analysis according to the present invention.
Detailed Description
The invention will be further elucidated by means of specific embodiments in the following with reference to the drawings.
As shown in fig. 1, the excited fluorescence detection device based on image analysis of the present embodiment includes: the device comprises a detection wafer bearing device 6, a box body 5, a box body cover 3, an air inlet device 1, an air outlet device 4, an air inlet pipeline, an air outlet pipeline, an air pump, an excitation light source, an image acquisition device 2 and an image processing circuit; wherein, the box body 5 is a hollow shell; a box cover 3 is arranged at the top of the box body 5; a mounting through hole is formed in the front wall of the box body 5, and the detection wafer bearing device 6 is placed in the box body 5 through the mounting through hole; the detection wafer is placed on the detection wafer bearing device 6; an air inlet through hole 13 is formed in one side wall of the box body 5, the air inlet device 1 extends into the box body 5 from the outside of the box body 5 through the air inlet through hole, and an air inlet pipeline outside the box body is connected with the air inlet device; an exhaust through hole 14 is formed in the side wall of the box body 5 opposite to the air inlet through hole, and the exhaust device 4 extends out of the box body 5 from the inside of the box body 5 through the exhaust through hole; the exhaust device 4 is connected to the air pump through an exhaust pipeline; an excitation light source is arranged on the inner surface of the box body cover 3; a light-transmitting window is arranged on the box body cover 3; the image acquisition device 2 is over against the detection wafer in the box body 5 through the light-transmitting window; the image acquisition device 2 is connected to an image processing circuit.
As shown in fig. 2, the installation through-hole opened at the front wall of the case includes an installation groove 10 and a sealing plate through-hole 11; the mounting groove is matched with a baffle plate of the wafer detection bearing device, a sealing plate through hole is formed in the center of the mounting groove, and the sealing plate through hole is matched with the sealing plate; and two inner side walls of the box body are respectively provided with a sliding chute 12 matched with the bearing plate, and the bearing plate extends into the box body along the sliding chute through the sealing plate through hole. An air intake through hole 13 is formed in one side wall of the case 5, and an exhaust through hole 14 is formed in the side wall of the case 5 opposite to the air intake through hole.
As shown in fig. 3, the inspection wafer carrier includes: a baffle 7, a sealing plate 8, a bearing plate 9 and a handle 10; wherein, the outer surface of the vertical baffle 7 is provided with a handle 10; a horizontal bearing plate 9 is arranged at the center of the inner surface of the baffle 7; a sealing plate 8 is arranged on the inner surface of the baffle plate 7 and around the bearing plate 9; a bearing groove is arranged on the upper surface of the bearing plate 9; the detection wafer is placed on the bearing groove.
As shown in fig. 4, the gas inlet device is a pipeline for conveying gas, the interior of the pipeline is hollow, the rear part of the outer wall is provided with a plurality of truncated cone-shaped bosses, and the front part extending into the box body is of a bent pipe structure so as to ensure that gaseous substances to be detected are conveyed onto the detection wafer through the bent pipe; the air inlet pipeline is connected through the circular truncated cone-shaped boss part, and the circular truncated cone-shaped boss can prevent the air inlet pipeline from falling off.
As shown in fig. 5, the exhaust device is a pipeline for conveying gas, the interior of the pipeline is hollow, the front part of the outer wall is provided with a plurality of truncated cone-shaped bosses which are of straight pipe structures, the exhaust device is connected with the air pump through an exhaust pipeline, and the truncated cone-shaped bosses can prevent the exhaust pipeline from falling off.
As shown in fig. 6, the case cover is matched with the case; the middle of the glass is provided with a light through hole, and high-transmittance glass is arranged on the light through hole so as to form a light through window; the image acquisition device and the light-transmitting window are coaxially arranged, so that the image acquisition device can be ensured to be right opposite to the detection wafer. The excitation light source is arranged in the box body cover through the small holes on the periphery of the box body cover, so that the excitation light can shine on the detection wafer. In this embodiment, the excitation light is 458 ± 10 nm.
The calibration before the detection of the substances in different states is only needed to be carried out once to obtain the detection limits of R (red), G (green) and B (blue), and then all the substances to be detected are carried out by taking the detection limits as the reference without carrying out calibration again, the threshold value used in the calibration is the lowest limit for considering the existence of peroxide, the lowest limit is that liquid is calibrated by 100 +/-10 ppb hydrogen peroxide solution, and gaseous state and volatile liquid state or solid state are carried out by saturated steam volatilized by 0.10 +/-0.05 mol/L hydrogen peroxide solution under normal pressure. In this example, the peroxide used was rated at 2. mu.L and 100ppb of H2O2And repeatedly calibrating the ethanol solution for three times to obtain an average value, wherein the obtained detection limits of the difference between R, G and B are respectively 38, 59 and 15.
After each inspection, the inspection wafer needs to be replaced.
As shown in fig. 7, the calibration method before detecting the excited fluorescence peroxide based on image analysis of the present embodiment includes the following steps:
a) and (3) calibration reference:
1)458 onto the detection wafer;
2) the image acquisition device acquires images of the shot detection wafer and transmits the images to the image processing circuit to obtain a calibration reference image in a bitmap format;
3) the image processing circuit divides the calibration reference image, only the detection wafer area part is reserved, and the divided calibration reference image is obtained;
4) carrying out image coding compression on the divided calibration reference image to obtain a compressed calibration reference image;
5) carrying out image enhancement and restoration processing on the compressed calibration reference image so as to restore information contained in the image as much as possible, reducing noise and improving image definition to obtain a calibration reference high-definition image;
6) r, G and B chromaticity extraction are carried out on the calibration reference high-definition image to obtain R, G and B chromaticity matrixes of each pixel point, graying processing is carried out on each pixel point to obtain R, G and B grayscale matrixes of each pixel point, so that the gray values of R, G and B channels of each pixel point are separated, and the calibration reference gray values of R, G and B of each pixel point are obtained respectively;
7) respectively adding and averaging the R, G calibrated reference gray values of all the pixel points and the B calibrated reference gray values to respectively obtain a R, G calibrated reference gray value average value and a B calibrated reference gray value average value;
b) calibrating peroxide:
1) a peroxide of a threshold concentration, 2 μ L of 100ppb of H in this example, was dropped on the test wafer, this concentration being the lowest standard value for determining the presence of peroxide2O2Ethanol solution;
2)458 onto the detection wafer;
3) the image acquisition device acquires images of the shot detection wafer and transmits the images to the image processing circuit to obtain a calibration peroxide image in a bitmap format;
4) the image processing circuit divides the calibrated peroxide image, only the area part of the detection wafer is reserved, and the divided calibrated peroxide image is obtained;
5) carrying out image coding compression on the divided calibration peroxide image to obtain a compressed calibration peroxide image;
6) performing image enhancement and restoration treatment on the compressed calibrated peroxide image to restore information contained in the image as much as possible, reducing noise and improving image definition to obtain a calibrated peroxide high-definition image;
7) r, G and B chromaticity extraction are carried out on the high-definition image of the calibrated peroxide to obtain R, G and B chromaticity matrixes of each pixel point, graying processing is carried out on each pixel point to obtain R, G and B grayscale matrixes of each pixel point, so that the gray values of R, G and B channels of each pixel point are separated, and the calibrated peroxide gray values of R, G and B of each pixel point are obtained respectively;
8) respectively adding and averaging the R, G calibrated peroxide gray values of all the pixel points and the B calibrated peroxide gray values to respectively obtain R, G calibrated peroxide gray average values and B calibrated peroxide gray average values;
c) comparing, namely subtracting, the calibrated peroxide gray average values of R, G and B with the calibrated reference gray average values of R, G and B respectively to obtain peroxide standard difference values of R, G and B;
d) and (3) replacing the detection wafer, repeating the steps a) to c) for three times to obtain multiple groups of R, G and B peroxide standard difference values, summing and averaging the multiple groups of R, G and B peroxide standard difference values respectively to serve as detection limits for judging whether the substance to be detected is peroxide, wherein the detection limits are respectively 38, 59 and 15.
As shown in fig. 8, the method for detecting excited fluorescence peroxide based on image analysis of the present embodiment includes the following steps:
a) obtaining a blank reference:
1)458 onto the detection wafer;
2) the image acquisition device acquires images of the shot detection wafer and transmits the images to the image processing circuit to obtain a blank reference image in a bitmap format;
3) the image processing circuit divides the blank reference image, only the detection wafer area part is reserved, and the divided blank reference image is obtained;
4) carrying out image coding compression on the partitioned blank reference image to obtain a compressed blank reference image;
5) performing image enhancement and restoration processing on the compressed blank reference image to restore information contained in the image as much as possible, reducing noise and improving image definition to obtain a blank reference high-definition image;
6) r, G and B chromaticity extraction are carried out on the blank reference high-definition image to obtain R, G and B chromaticity matrixes of each pixel point, graying processing is carried out on each pixel point to obtain R, G and B grayscale matrixes of each pixel point, so that the gray values of R, G and B channels of each pixel point are separated, and blank reference gray values of R, G and B of each pixel point are obtained respectively;
b) summing and averaging the R, G calibrated reference gray values of all the pixels and the B calibrated reference gray values of all the pixels to obtain a blank reference gray average value of R, G and B, respectively, in this embodiment, the obtained blank reference gray levels of R, G and B are obtained
Mean values of 30, 96 and 185, respectively; obtaining the gray average value of the substance to be detected:
1) the test substance was dropped on the test wafer, and the test substance used in this example was 2. mu.L of 0.5mol/LH2O2A solution;
2)458, the substance to be detected reacts with the detection wafer to generate fluorescence;
3) the image acquisition device acquires and shoots an image of the detection wafer, and transmits the image to the image processing circuit to obtain a bitmap-format image of the substance to be detected;
4) the image processing circuit divides the image of the substance to be detected, only the area part of the detection wafer is reserved, and the divided image of the substance to be detected is obtained;
5) carrying out image coding compression on the segmented to-be-detected substance image to obtain a compressed to-be-detected substance image;
6) carrying out image enhancement and restoration processing on the compressed to-be-detected substance image so as to restore information contained in the image as much as possible, reducing noise and improving image definition to obtain a to-be-detected substance high-definition image;
7) r, G and B chromaticity extraction are carried out on the high-definition image of the substance to be detected, R, G and B chromaticity matrixes of each pixel point are obtained, graying processing is carried out on each pixel point, R, G and B grayscale matrixes of each pixel point are obtained respectively, therefore, the gray values of R, G channels and B channels of each pixel point are separated, and the gray values of the substance to be detected of R, G channels and B channels of each pixel point are obtained respectively;
8) adding and averaging the gray values of R, G and B to-be-detected substances of all pixel points respectively to obtain the gray average values of R, G and B to-be-detected substances respectively, wherein in the embodiment, the obtained gray average values of R, G and B to-be-detected substances are 128, 225 and 222;
c) r, G and the gray level average value of the substance to be detected of B are respectively compared with the blank reference gray level average value of R, G and the blank reference gray level average value of B, namely subtraction is carried out, so that the difference value of the substance to be detected of R, G and B is obtained, and in the embodiment, the obtained difference values of the substance to be detected of R, G and B are 98, 129 and 37;
d) comparing the difference between the substances to be detected of R, G and B with the standard difference between the peroxides of R, G and B, and comparing the difference with the detection limits of R, G and B, namely 38, 59 and 15, respectively, in the embodiment, the difference between the substances to be detected of R, G and B exceeds the detection limits of R, G and B, and judging that the substances to be detected are peroxides.
The judgment standard is as follows: r, G and B, the difference value of the substances to be detected exceeds the corresponding detection limits of R, G and B at the same time, and the substance is judged to be peroxide; otherwise, the compound is judged to be non-peroxide.
And corresponding calibration references are adopted for the substances to be detected with different physical states. For the substance to be detected in a gaseous or volatile liquid or solid state, the calibration reference peroxide is gaseous peroxide, the threshold concentration of the peroxide for calibration is the saturated steam volatilized by the hydrogen peroxide solution with the lowest detection standard of 0.10 +/-0.05 mol/L under normal pressure for judging the peroxide, the detection limit of the gaseous state is correspondingly obtained, and the substance to be detected in the gaseous or volatile liquid or solid state is compared with the detection limit of the gaseous state; and for the to-be-detected substance to be in a liquid state, the calibration reference peroxide is liquid peroxide, the threshold concentration of the peroxide for calibration is the minimum concentration standard of determining the peroxide to be 100 +/-10 ppb hydrogen peroxide solution, and the liquid to-be-detected substance is compared with the liquid detection limit.
Finally, it is noted that the disclosed embodiments are intended to aid in further understanding of the invention, but will be understood by those skilled in the art that: various substitutions and modifications are possible without departing from the spirit and scope of the present invention and the appended claims. Therefore, the present invention should not be limited to the embodiments disclosed, and the scope of the present invention is defined by the appended claims.
Claims (8)
1. An image analysis-based excited fluorescence peroxide detection device, comprising: the device comprises a detection wafer bearing device, a box body cover, an air inlet device, an air outlet device, an air inlet pipeline, an air outlet pipeline, an air pump, an excitation light source, an image acquisition device and an image processing circuit; the box body is a shell with a hollow interior; a box cover is arranged at the top of the box body; the front wall of the box body is provided with a mounting through hole, and the detection wafer bearing device is placed in the box body through the mounting through hole; the detection wafer is placed on the detection wafer bearing device; one side wall of the box body is provided with an air inlet through hole, the air inlet device extends into the box body from the outside of the box body through the air inlet through hole, and an air inlet pipeline outside the box body is connected with the air inlet device; an exhaust through hole is formed in the side wall of the box body, which is opposite to the air inlet through hole, and the exhaust device extends out of the box body from the box body through the exhaust through hole; the exhaust device is connected to the air pump through an exhaust pipeline; an excitation light source is arranged on the inner surface of the box body cover; a light-transmitting window is arranged on the box body cover; the image acquisition device is over against the detection wafer in the box body through the light-transmitting window; the image acquisition device is connected to the image processing circuit.
2. The image analysis-based excited fluorescence peroxide detection device of claim 1, wherein the detection wafer carrier comprises: the device comprises a baffle plate, a sealing plate, a bearing plate and a handle; wherein, the outer surface of the vertical baffle is provided with a handle; a horizontal bearing plate is arranged at the center of the inner surface of the baffle; a sealing plate is arranged on the inner surface of the baffle plate and around the bearing plate; the upper surface of the bearing plate is provided with a bearing groove; the detection wafer is placed on the bearing groove.
3. The image analysis-based excited fluorescence peroxide detection device of claim 1, wherein the mounting through-hole comprises: the mounting groove and the sealing plate through hole; the front wall of the box body is provided with a mounting groove matched with a baffle of the wafer bearing device, the center of the mounting groove is provided with a sealing plate through hole, the sealing plate through hole is matched with the sealing plate, and the air tightness of the box body is ensured in an adsorption mode; and two inside walls of the box body are respectively provided with a horizontal sliding groove matched with the bearing plate, and the bearing plate extends into the box body along the sliding groove through the sealing plate through hole.
4. The device for detecting excited fluorescence peroxide based on image analysis according to claim 1, wherein the gas inlet means is a pipeline for conveying gas, the interior of the pipeline is hollow, the rear part of the outer wall is provided with a plurality of truncated cone-shaped bosses, and the front part extending into the box body is of a bent pipe structure.
5. The image analysis-based excited fluorescence peroxide detection device according to claim 1, wherein the exhaust means is a gas transmission pipe, the inside of the pipe is hollow, and the front part of the outer wall has a plurality of truncated cone-shaped bosses and is of a straight pipe structure.
6. The device for detecting the excited fluorescence peroxide based on the image analysis as claimed in claim 1, wherein the box cover is matched with the box body to ensure the tightness of the box body in an adsorption mode; the middle of the glass is provided with a light through hole, and high-transmittance glass is arranged on the light through hole so as to form a light through window; the image acquisition device and the light-transmitting window are coaxially and hermetically mounted, so that the image acquisition device can be ensured to be right opposite to the detection wafer.
7. The image analysis-based excited fluorescence peroxide detection device of claim 1, wherein the excitation light source is hermetically mounted in the case cover through small holes around the case cover.
8. The image analysis-based excited fluorescence peroxide detection device of claim 1, wherein the image acquisition device employs a CCD industrial camera.
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| CN110823856A (en) * | 2019-12-19 | 2020-02-21 | 北京永安多谱检测科技有限公司 | Excited fluorescence peroxide detection device based on image analysis and detection method thereof |
| CN110887824A (en) * | 2019-12-02 | 2020-03-17 | 北京永安多谱检测科技有限公司 | Integrated modular peroxide detection device and detection method thereof |
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| CN113670884A (en) * | 2021-09-01 | 2021-11-19 | 北京理工大学 | Non-contact peroxide explosive detection device based on chemical fluorescence principle |
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| CN110887824A (en) * | 2019-12-02 | 2020-03-17 | 北京永安多谱检测科技有限公司 | Integrated modular peroxide detection device and detection method thereof |
| CN110823856A (en) * | 2019-12-19 | 2020-02-21 | 北京永安多谱检测科技有限公司 | Excited fluorescence peroxide detection device based on image analysis and detection method thereof |
| CN112697870A (en) * | 2020-12-02 | 2021-04-23 | 深圳市鑫源通电子有限公司 | Detector for narcotic drugs without radioactive source explosive |
| CN113670884A (en) * | 2021-09-01 | 2021-11-19 | 北京理工大学 | Non-contact peroxide explosive detection device based on chemical fluorescence principle |
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