Explosive detection apparatus and method of detecting explosives

Abstract

The present disclosure provides an explosive detection device and an explosive detection method based on the detection device. The explosive detection device comprises a sampling member provided with a plurality of sampling portions, each of which is configured to accommodate a sample for sampling the same kind of article; and one or more liquid storage portions storing a color developing agent and configured to release the color developing agent to the sample of a part of the sampling portions, so that all the samples are divided into color developed samples and original color samples; a detection assembly comprising a detection container, the detection container defining cavities accommodating the sampling member, each of the cavities being divided into a first detection chamber suitable for accommodating a sampling portion carrying a color developed sample and a second detection chamber suitable for accommodating a sampling portion carrying an original color sample; a first detection portion and a second detection portion for extracting feature information of at least a part of substances in the samples, respectively; and an output assembly configured to output information of whether and which organic explosive and / or inorganic explosive the article has.

Description

Technical Field

[0001] At least one embodiment of this disclosure relates to an explosive detection device, and more specifically, to an explosive detection device and an explosive detection method based on the detection device. Background Technology

[0002] For public safety reasons, in some use cases (such as customs, border checkpoints, outdoor exhibitions, highway checkpoints and sports venues, etc.), it is necessary to inspect items entering the area to check whether the items contain explosives.

[0003] Currently, ion mobility spectrometry is often used to detect organic explosives (such as nitroaromatics). However, for inorganic salt explosives (such as peroxides, potassium nitrate, chlorate, perchlorate, etc.), these explosives are difficult to vaporize even at 280°C and cannot form characteristic ions in ion mobility spectrometry. Therefore, ion mobility spectrometry cannot be used for detection, which leads to safety hazards during the detection process. Summary of the Invention

[0004] To address at least one technical problem in the prior art and other aspects, this disclosure provides an explosive detection device and method. The sampling component has multiple sampling sections that sample the same item. A liquid storage section stores and releases a colorimetric reagent to a portion of the sampling sections to perform colorimetric treatment on the samples collected by the sampling sections. When the sampling component is inserted into the detection assembly, while the first detection section detects the colorimetric sample, the second detection section simultaneously detects the original color sample to obtain information on organic and / or inorganic explosives in the item. This not only compensates for the limitation of the original ion mobility spectrometry detection in detecting inorganic explosives but also allows for repeated judgment of substances detected by both detection sections, which helps improve detection accuracy and anti-interference capability.

[0005] This disclosure provides an explosive detection device, comprising: a sampling member having a plurality of sampling portions on its surface, each sampling portion configured to contain a sample for sampling the same article; and one or more reservoirs storing a colorimetric reagent, configured to release the colorimetric reagent to a portion of the samples in the sampling portions, such that all the samples are separated into a colorimetric sample and a primary color sample; and a detection assembly, comprising: a detection container defining a chamber for containing the sampling member, each chamber being divided into a first detection chamber suitable for containing a sampling portion carrying the colorimetric sample, and a second detection chamber suitable for containing a primary color sample carrying the primary color sample. The sampler includes a second detection chamber for a colored sample; a first detection unit configured to perform colorimetric detection on the colored sample contained in the first detection chamber to extract characteristic information of at least a portion of the substances in the sample; a second detection unit configured to perform ion mobility spectrometry detection on the primary color sample contained in the second detection chamber to extract characteristic information of at least a portion of the substances in the sample; and an output component communicatively connected to the first and second detection units and configured to output information on whether the article contains and if so, organic and / or inorganic explosives, based on the characteristic information extracted by the first and / or second detection units.

[0006] According to an embodiment of the present disclosure, the sampling component includes a housing, the surface of which is provided with at least two receiving grooves, each receiving groove being provided with a sampling part, a portion of which protrudes outward from the opening of the receiving groove.

[0007] According to an embodiment of the present disclosure, a liquid guide tube is provided in the portion of the housing located between the liquid storage section and at least one of the receiving tanks, so that the color developer flows from the liquid storage section into the receiving tank through the liquid guide tube under external pressure, and wets the sample in the sampling section to form the color developing sample.

[0008] According to an embodiment of this disclosure, the two receiving grooves provided in the sampling member are respectively formed on the two opposite surfaces of the housing.

[0009] According to an embodiment of this disclosure, the two receiving grooves provided in the sampling member are formed on the same surface of the housing.

[0010] According to an embodiment of the present disclosure, the housing is further provided with an overflow pipe, one end of which is disposed in the receiving tank connected to the liquid storage section, and the other end of which extends to a portion outside the other receiving tanks provided in the housing.

[0011] According to embodiments of this disclosure, the sampling element is provided with a plurality of the aforementioned liquid storage sections.

[0012] According to embodiments of this disclosure, each of the above-described reservoirs stores the same colorimetric agent.

[0013] According to embodiments of this disclosure, at least a portion of the above-mentioned liquid reservoir stores different color developers.

[0014] According to an embodiment of the present disclosure, a heat insulation plate is provided in the chamber of the detection container to divide the chamber into a first detection chamber and a second detection chamber; a through hole is provided in the heat insulation plate to allow a portion of the sample to pass through the heat insulation plate and extend into the second detection chamber.

[0015] According to an embodiment of this disclosure, the inner edge of the through hole is provided with an elastic sealing member, which abuts against the surface of the sampling member when the sampling member is inserted into the through hole, so as to seal the second detection chamber with the first detection chamber.

[0016] According to an embodiment of this disclosure, the first detection unit includes: a photodetector disposed in the first detection chamber, the acquisition end of the photodetector being disposed facing the sampling unit containing the colorimetric sample, for acquiring the absorption peak of the color band displayed by the colorimetric sample and the color change process; a photoelectric conversion module communicatively connected to the photodetector for converting the optical signal of the photodetector into an electrical signal; and a first acquisition module adapted to extract first feature information based on the electrical signal output by the photoelectric conversion module.

[0017] According to an embodiment of this disclosure, the second detection chamber is configured to perform thermal desorption on the sampling section to form gaseous molecules from at least a portion of the substances in the primary color sample; the second detection section includes: an ion migration mechanism connected to the outlet end of the second detection chamber, configured to ionize the gaseous molecules, causing the product ions of the gaseous molecules to separate sequentially, and detecting the current formed by the product ions; an ion migration module communicatively connected to the ion migration mechanism to acquire the electrical signal output by the ion migration mechanism and output an ion migration spectrum; and a second acquisition module communicatively connected to the ion migration module, suitable for extracting second feature information based on the ion migration spectrum.

[0018] According to an embodiment of this disclosure, the ion migration mechanism includes: an ion migration tube defining an ion reaction region and an ion migration region, and an ion gate connected to the second detection chamber; an ionization device disposed in the ion reaction region and used as an ionization source; and a Faraday disk disposed in the ion migration region for receiving ion products of the gaseous molecules and generating an electric current.

[0019] According to embodiments of this disclosure, the output component includes: a matching module configured to extract the feature information and match it with a database to obtain matching data; and a display module configured to display organic and / or inorganic explosives corresponding to the matching data based on the matching data.

[0020] Embodiments of this disclosure also provide an explosive detection method based on an explosive detection device, comprising: wiping the article to be tested so that the test characteristics of the article to be tested are attached to the sample carried by two sampling sections of a sampling device; releasing a colorimetric agent into the sample of one of the sampling sections, so that all the samples are separated into a colorimetric sample and a primary color sample; performing colorimetric detection on the colorimetric sample and ion mobility spectrometry detection on the primary color sample to extract characteristic information of at least a portion of the substances in all samples; and outputting information on whether the article has and if so, whether it has organic and / or inorganic explosives based on the characteristic information.

[0021] According to embodiments of this disclosure, the colorimetric detection and the ion mobility spectrometry detection are performed simultaneously.

[0022] According to embodiments of this disclosure, the release of a colorimetric agent into a sample of a sampling unit, such that all samples are divided into colorimetric samples and original color samples, includes: releasing the same colorimetric agent sequentially to uniformly wet different areas of a sampling unit to form colorimetric samples.

[0023] According to an embodiment of the present disclosure, the release of a colorimetric agent into a sample in a sampling section, such that all the samples are divided into colorimetric samples and original color samples, includes: releasing different colorimetric agents sequentially, and ensuring that the areas of the different colorimetric agents released each time at least partially overlap within the sampling section, so that the colorimetric samples located in the overlapping portions develop color multiple times.

[0024] According to the explosive detection equipment and method based on the equipment provided in this disclosure, the collection unit is equipped with at least two sampling sections, which can perform multiple samplings at the same location of the test item, or obtain the same sample from multiple locations of the test item in a single sampling process, thereby increasing the amount of sample collected. The storage section is suitable for storing and releasing a colorimetric agent to a portion of the sampling sections, so that the sample is separated into a colorimetric sample and a primary color sample. The detection container, in conjunction with the first and second detection sections, simultaneously performs colorimetric and ion mobility spectrometry detection on the samples collected by the two sampling sections. Colorimetric detection compensates for the limitation of ion mobility spectrometry in detecting inorganic explosives. Furthermore, during the matching of the extracted feature information with the database by the output component, substances detected by both detection methods can be repeatedly evaluated, thereby verifying the detection results and improving the accuracy and anti-interference capability of the detection. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of an explosive detection device according to an illustrative embodiment of the present disclosure;

[0026] Figure 2 yes Figure 1 A schematic diagram of the second detection unit of an explosive detection device according to an illustrative embodiment;

[0027] Figure 3 yes Figure 1 A front view of the sampling component of the explosive detection device shown in the illustrative embodiment;

[0028] Figure 4 yes Figure 3 A side view of the sampling component from the right perspective of the illustrative embodiment shown; and

[0029] Figure 5 This is a flowchart illustrating an explosive detection method according to an illustrative embodiment of the present disclosure. The meanings of the reference numerals in the accompanying drawings are as follows:

[0030] 1. Inspect the container;

[0031] 11. First Testing Room;

[0032] 111. Insertion port;

[0033] 12. Cylinder body;

[0034] 13. Heat insulation board;

[0035] 131. Through hole;

[0036] 14. Second Testing Room;

[0037] 2. First Inspection Department;

[0038] 21. Photodetector;

[0039] 22. Photoelectric conversion module;

[0040] 23. First data acquisition module;

[0041] 3. Second Inspection Department;

[0042] 31. Ion migration mechanism;

[0043] 311. Ionization device;

[0044] 312. Ion Gate;

[0045] 313. Exhaust port;

[0046] 314. Air vent;

[0047] 315. Amplifier;

[0048] 316. Faraday Disc;

[0049] 317. Ion migration tube;

[0050] 32. Ion migration module;

[0051] 33. Second acquisition module;

[0052] 4. Output components;

[0053] 41. Matching module;

[0054] 42. Display module;

[0055] 5. Sampling components;

[0056] IB231832

[0057] 51. Shell;

[0058] 52. Liquid storage part;

[0059] 53. First sampling section;

[0060] 54. Second sampling unit;

[0061] 55. Overflow pipe; and

[0062] 56. Liquid delivery tube. Detailed Implementation

[0063] To make the objectives, technical solutions, and advantages of this disclosure clearer, the following detailed description is provided in conjunction with specific embodiments and the accompanying drawings.

[0064] The terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the scope of this disclosure. The terms “comprising,” “including,” etc., as used herein indicate the presence of features, steps, operations, and / or components, but do not exclude the presence or addition of one or more other features, steps, operations, or components.

[0065] All terms used herein, including technical and scientific terms, have the meanings commonly understood by those skilled in the art, unless otherwise defined. It should be noted that the terms used herein are to be interpreted in a manner consistent with the context of this specification, and not in an idealized or overly rigid way.

[0066] When using expressions such as "at least one of A, B, and C," the meaning should generally be interpreted according to the understanding of someone skilled in the art. For example, "a system having at least one of A, B, and C" should include, but is not limited to, systems having A alone, having B alone, having C alone, having A and B, having A and C, having B and C, and / or having A, B, and C. Similarly, when using expressions such as "at least one of A, B, or C," the meaning should generally be interpreted according to the understanding of someone skilled in the art. For example, "a system having at least one of A, B, or C" should include, but is not limited to, systems having A alone, having B alone, having C alone, having A and B, having A and C, having B and C, and / or having A, B, and C.

[0067] Figure 1 This is a schematic diagram of an explosive detection device according to an illustrative embodiment of the present disclosure.

[0068] According to the explosive detection equipment provided in this disclosure, such as Figure 1 As shown, the system includes a sampling component 5, a detection component, and an output component 4. The sampling component 5 has multiple sampling sections on its surface, each configured to hold a sample of the same item. The sampling component 5 also has one or more reservoirs 52 storing a colorimetric reagent, configured to release the reagent to a portion of the sample from the sampling sections, thus separating all samples into colorimetric samples and primary color samples. The detection component includes a detection container 1, a first detection section 2, and a second detection section 3. The detection container 1 defines a chamber for accommodating the sampling component 5, each chamber being divided into a first detection chamber 11 for accommodating a sampling section containing a colorimetric sample and a second detection chamber 14 for accommodating a sampling section containing a primary color sample. The first detection section 2 is configured to perform colorimetric detection on the colorimetric sample contained in the first detection chamber 11 to extract characteristic information of at least a portion of the substances in the sample. The second detection section 3 is configured to perform ion mobility spectrometry detection on the primary color sample contained in the second detection chamber 14 to extract characteristic information of at least a portion of the substances in the sample. The output component 4 is communicatively connected to the first detection unit 2 and the second detection unit 3, and is configured to output information on whether the article has and contains organic and / or inorganic explosives based on the feature information extracted by the first detection unit 2 and / or the second detection unit 3.

[0069] In one illustrative embodiment, such as Figure 1As shown, the sampling unit 5 includes, but is not limited to, having two sampling sections. Specifically, the two sampling sections are spaced apart at the top and bottom of the sampling unit. Furthermore, the samples contained in the sampling sections include, but are not limited to, samples obtained by wiping the surface of the item to be tested (including, but not limited to, the outer surface, inner surface, and other wipeable parts) with a wiping cloth or wiping paper.

[0070] In one illustrative embodiment, such as Figure 1 As shown, the detection container 1 includes a cylindrical body 12 configured as a cylindrical structure. Specifically, the cylindrical body 12 has two chambers. Further, the two chambers may, but are not limited to, be configured to be stacked. It should be understood that the embodiments of this disclosure are not limited thereto.

[0071] For example, the two chambers can also be configured as left and right, and the sampling element 5 is accordingly configured to be inserted into the detection container 1 laterally or obliquely.

[0072] In one illustrative embodiment, such as Figure 1 As shown, the length of the sampling element 5 is adapted to the height of the detection container 1. The adapted height is characterized by the fact that, when the sampling element 5 is inserted into the detection container 1, the two sampling parts of the sampling element 5 are respectively located in a first detection chamber 11 and a second detection chamber 14.

[0073] In this implementation, the sampling unit is equipped with at least two sampling sections, which can perform multiple samplings at the same location of the test item, or acquire the same sample from multiple locations of the test item in a single sampling process, thereby increasing the amount of sample collected. The detection container, in conjunction with the first and second detection sections, simultaneously performs colorimetric and ion mobility spectrometry detection on the samples collected by the two sampling sections. Colorimetric detection compensates for the limitation of ion mobility spectrometry in detecting inorganic explosives. Furthermore, during the matching of the extracted feature information with the database by the output component, substances detected by both detection methods can be repeatedly evaluated to verify the detection results, thereby improving the accuracy and anti-interference capability of the detection.

[0074] According to embodiments of this disclosure, such as Figure 1 As shown, a heat insulation plate 13 is provided in the chamber of the detection container 1 to divide the chamber into a first detection chamber 11 and a second detection chamber 14. A through hole 131 is provided on the heat insulation plate 13 to allow a portion of the sampling piece 5 to pass through the heat insulation plate 13 and extend into the second detection chamber 14.

[0075] In one illustrative embodiment, the heat insulation plate 13 extends horizontally to divide the upper and lower parts of the reaction chamber into a first detection chamber 11 and a second detection chamber 14. Specifically, a through hole 131 is provided in the middle of the heat insulation plate 131. Furthermore, the heat insulation plate 131 is positioned near the centerline of the detection container 1 to divide the first detection chamber 11 and the second detection chamber 14 into two spaces with approximately equal internal space. This facilitates the setting of the size and shape of the sampling element 5, thereby improving the adaptability of the sampling element 5.

[0076] In another illustrative embodiment, the heat insulation plate 13 is offset from the centerline of the detection container 1, so that the first detection chamber 11 and the second detection chamber 14 are divided into two spaces with different internal sizes. This allows the first detection unit 2 and the second detection unit 3 to be configured according to the different sizes of the spaces, which is beneficial for the design of the explosive detection equipment, resulting in a smaller size. It should be understood that the embodiments of this disclosure are not limited thereto.

[0077] For example, the heat insulation plate 13 may be configured to be inclined to the horizontal plane so that the first chamber 11 and the second chamber 14 form different shapes, so as to meet the volume requirements of the explosive detection equipment and / or the installation requirements of the configured first detection unit 2 and second detection unit 3.

[0078] According to an embodiment of this disclosure (not shown in the figures), the inner edge of the through hole 131 is provided with an elastic seal, which abuts against the surface of the sampling member 5 when the sampling member 5 is inserted into the through hole 131, so as to seal the second detection chamber 14 with the first detection chamber 11.

[0079] In one illustrative embodiment, such as Figure 1 As shown, an insertion port 111 is provided at the upper part of the detection container 1, corresponding to the through hole 131, to allow the sample 5 to pass through and be inserted into the first detection chamber 11. Specifically, the insertion port 111 is configured to at least partially coincide with the through hole 131 in its orthographic projection along the vertical direction. It should be understood that the embodiments of this disclosure are not limited thereto.

[0080] For example, the insertion port 111 may also be configured to be offset from the through hole 131 and to have the same slope as the through hole 131, so as to accommodate the sampling member 5 being inserted into the detection container 1 in a direction inclined to the horizontal plane.

[0081] In one illustrative embodiment, the seal includes, but is not limited to, a sealing ring made of rubber (such as vulcanized rubber).

[0082] According to embodiments of this disclosure, such as Figure 1As shown, the first detection unit 2 includes a photodetector 21, a photoelectric conversion module 22, and a first acquisition module 23. The photodetector 21 is located inside the first detection chamber 11, and its acquisition end faces the sampling section containing the colorimetric sample (e.g., ...). Figure 1 (As shown, set to the right) to acquire the absorption peaks and color change processes of the color bands displayed by the colorimetric sample. The photoelectric conversion module 22 and the photodetector 21 are communicatively connected to convert the optical signal from the photodetector 21 into an electrical signal. The first acquisition module 23 is suitable for extracting first feature information based on the electrical signal output by the photoelectric conversion module 22.

[0083] In one illustrative embodiment, such as Figure 1 As shown, the photodetector 21 can be a single detector or a photodetector array formed by multiple detectors (such as an array formed by multiple detectors arranged in rows and / or columns, an array formed by multiple detectors arranged in a ring, and at least one of other types of arrays). Furthermore, the photodetector 21 includes, but is not limited to, being arranged parallel to the sampling element 5 inserted into the detection container 1 to collect the absorption peaks and color changes in the wavelength band of the color (visible light) displayed by the sampling section. It should be understood that the embodiments of this disclosure are not limited thereto.

[0084] For example, one or more filters can be arranged between the photodetector 21 and the sampling element 5 to detect the absorption peak band and absorbance of the color displayed by the sampling unit.

[0085] In this implementation, by means of colorimetric detection, at least a portion of the substances contained in the sample can be determined by the absorption peak generated by the color band used by the photodetector 21.

[0086] In another illustrative embodiment (not shown in the figure), the first detection unit may also be equipped with a decomposition light source and an excitation light source, wherein the decomposition light source is used to decompose the sample, and the excitation light source is used to perform fluorescence color development on the substances in the sample. Furthermore, the photodetector 21 may be configured as a light signal acquisition mechanism such as a photomultiplier tube. In this way, the type and / or concentration of a portion of the substances contained in the sample can be obtained through changes in the voltage signal of the photomultiplier tube.

[0087] Figure 2 yes Figure 1 A schematic diagram of the second detection unit of an explosive detection device according to an illustrative embodiment.

[0088] According to embodiments of this disclosure, such as Figure 1 and Figure 2As shown, the second detection chamber 14 is configured to perform thermal desorption on the sampling section, causing at least a portion of the substances in the primary color sample to form gaseous molecules. The second detection section 3 includes an ion migration mechanism 31, an ion migration module 32, and a second acquisition module 33. The ion migration mechanism 31 is connected to the gas outlet of the second detection chamber 14 and is configured to ionize the gaseous molecules, causing the characteristic ions of the gaseous molecules to separate sequentially, and detecting the current formed by the characteristic ions. The ion migration module 32 is communicatively connected to the ion migration mechanism 31 to acquire the electrical signal output by the ion migration mechanism 31 and generate an ion migration spectrum. The second acquisition module 33 is communicatively connected to the ion migration module 32 and is suitable for extracting second feature information based on the ion migration spectrum.

[0089] According to embodiments of this disclosure, such as Figure 2 As shown, the ion migration mechanism 31 includes an ion migration tube 317, an ionization device 311, and a Faraday disk 316. The ion migration tube 317 defines an ion reaction zone (e.g., Figure 2 The left-hand region shown) and ion migration region (such as Figure 2 (As shown in the right-hand region), the ion migration tube 317 is equipped with an ion gate 312 that communicates with the second detection chamber 14. An ionization device 311 is located within the ion reaction region and serves as an ionization source. A Faraday disk 316 is located within the ion migration region and is suitable for receiving characteristic ions of gaseous molecules and forming an electric current.

[0090] In one illustrative embodiment, such as Figure 2 As shown, the second detection chamber 14 serves as a thermal desorption mechanism for the second detection unit, which is suitable for heating the collection unit containing the sample so that the substances in the sample are removed in the form of gaseous molecules.

[0091] In one illustrative embodiment, the ion reaction region of the ion migration tube 317 is provided with an ion gate 312, an exhaust port 313, an ion gate electrode (not shown), an electrode ring (not shown), and a carrier gas ring (not shown). Multiple sets of insulating rings and electrode rings (not shown) are interlaced within the ion migration region of the ion migration tube 317. Gaseous molecules input from the second detection chamber 14 are ionized by an ionization source to form characteristic ions. Under the control of the ion gate, the characteristic ions periodically enter the ion migration region. Under the influence of an electric field, different types of characteristic ions reach the Faraday disk 316 according to their migration speed differences to form current signals. Furthermore, the second detection unit 3 also includes an amplifier 315, which is adapted to amplify the current signal collected by the Faraday disk 316 to output it to the ion migration module 32 to form an ion migration spectrum. Furthermore, the ion migration tube 317 is also equipped with a drift gas port 314, which is configured to output drift gas (such as air) in the opposite direction to the characteristic ion to the ion migration region, so as to improve the resolution of the ion migration spectrum.

[0092] According to embodiments of this disclosure, such as Figure 1 As shown, output component 4 includes a matching module 41 and a display module 42. The matching module 41 is configured to extract feature information and match it with a database to obtain matching data. The display module 42 is configured to display organic and / or inorganic explosives corresponding to the matching data.

[0093] In one illustrative embodiment, the database pre-stores attribute information (such as the type of explosive) of organic and / or inorganic explosives, as well as feature information that maps to the attribute information. Further, the matching module 41 is configured to acquire (e.g., by lookup table) attribute information (such as the type of explosive) corresponding to the feature information based on the first feature information (such as the absorption peak of the color collected by the photodetector, the light absorption rate, and the sampling amount) used by the first acquisition module 23 of the first detection unit 2, and the signal (such as the ion mobility and the area of ​​the ion peak) of the ion migration spectrum collected by the second acquisition module 33 of the second detection unit 3. For substances detected by both detection methods, they can be mutually verified to validate the detection results, thereby improving the accuracy and anti-interference capability of the detection. Furthermore, the display module 42 is suitable for displaying the attribute information output by the matching module 41.

[0094] In one illustrative embodiment, the display module 42 includes, but is not limited to, a display or a display terminal (such as a mobile phone, computer, tablet computer, or dedicated handheld terminal) configured with input and signal transmission functions. It should be understood that the embodiments of this disclosure are not limited thereto.

[0095] For example, in addition to the display module, the output component can also be configured with a corresponding reminder module and / or alarm module (such as at least one of a buzzer, warning light, or voice broadcast system) to output flashing lights and / or sounds to indicate the presence of a certain substance in the sample.

[0096] Figure 3 yes Figure 1 A front view of the sampling component of the explosive detection device shown in the schematic embodiment. Figure 4 yes Figure 3 The side view of the sampling component from the right perspective of the illustrative embodiment shown.

[0097] According to embodiments of this disclosure, such as Figure 3 and Figure 4 As shown, the sampling component 5 includes a housing 51. The surface of the housing 51 is provided with at least two receiving grooves, and a sampling part is provided in each receiving groove, a portion of which protrudes outward from the opening of the receiving groove.

[0098] According to embodiments of this disclosure, such as Figure 2and Figure 3 As shown, a liquid guide pipe 56 is provided in the portion of the housing 51 located between the liquid storage section 52 and at least one receiving tank, so that the color developer flows from the liquid storage section 52 into the receiving tank through the liquid guide pipe 56 under external pressure, and wets the sample in the sampling section to form a colorimetric sample.

[0099] According to an embodiment of this disclosure, as not shown in the figures, the two receiving grooves provided with the sampling member 5 are respectively formed on the two opposite surfaces of the housing 51.

[0100] According to embodiments of this disclosure, such as Figure 3 and Figure 4 As shown, the two receiving slots provided by the sampling component 5 are formed on the same surface of the housing 51.

[0101] According to embodiments of this disclosure, such as Figure 3 and Figure 4 As shown, an overflow pipe 55 is also provided inside the housing 51. One end of the overflow pipe 55 is located in a receiving tank that communicates with the liquid storage section 52, and the other end of the overflow pipe 55 extends to a portion outside the other receiving tanks provided in the housing 51.

[0102] In one illustrative embodiment, such as Figure 3 and Figure 4 As shown, the housing 51 is constructed as a strip-shaped plate structure. Specifically, a first sampling section 53 and a second sampling section 54 are provided at intervals in the middle and bottom of the housing, and the distance between the first sampling section 53 and the second sampling section 54 is configured to be greater than or equal to the thickness of the heat insulation plate 13. Furthermore, a liquid storage section 52 is provided at the upper end of the housing 51 above the first sampling section 53.

[0103] In one illustrative embodiment, such as Figure 3 and Figure 4 As shown, the liquid storage section 52 includes, but is not limited to, a liquid bladder, and a liquid guide tube 56 is provided between the liquid bladder and the first sampling section 53. Specifically, a breakable disc (not shown) is provided between the liquid storage section 52 and the liquid guide tube 56 to break the liquid storage section 52 under pressure, allowing the colorimetric reagent stored in the liquid storage section 52 to adhere to the first sampling section 53 via the liquid guide tube 56, thereby causing the sample to develop color and forming a colored sample to characterize the presence of a certain substance in the sample. It should be understood that the embodiments of this disclosure are not limited thereto.

[0104] For example, the reservoir 52 is configured as a piston structure, through which the color developer can be pushed out of the reservoir 52 by the piston of the piston structure.

[0105] In one illustrative embodiment, such as Figure 3 and Figure 4As shown, an overflow pipe 55 is provided between the first sampling section 53 and the second sampling section 54, communicating with the receiving tank that houses the first sampling section 53, so that the colorimetric reagent passing through the receiving tank is guided to other surfaces of the housing 51 other than the second sampling section 54 (such as...). Figure 3 (The left and / or right surfaces shown). This prevents excess colorimetric reagent in the first sampling section 53 from flowing into the second sampling section 54, thereby avoiding interference with the detection of substances in the second sampling section.

[0106] In another illustrative embodiment, not shown in the figure, the first sampling section 53 and the second sampling section 54 can be disposed on two opposing surfaces of the housing 51, such as one on the front surface and the other on the rear surface. In this way, even without the overflow pipe 55, the flow of color developer onto the second sampling section 54 can be prevented to some extent.

[0107] According to embodiments of this disclosure, each reservoir 52 stores the same color developer.

[0108] In one illustrative embodiment, each liquid reservoir 52 is equipped with a liquid guide tube 56 communicating with a receiving tank. Specifically, multiple liquid guide tubes 56 are arranged in parallel to guide the colorimetric reagent filled in different liquid reservoirs 52 to different positions in the first sampling section 53 (e.g., ...). Figure 3 As shown in the upper left and upper right parts, the colorimetric reagent flows downwards under its own weight, allowing it to more evenly wet and permeate the surface of the first collection part 53, thus preventing errors in colorimetric detection caused by uneven distribution of the colorimetric reagent.

[0109] According to embodiments of this disclosure, such as Figure 3 As shown, at least a portion of the liquid reservoir 52 stores different color developers.

[0110] In one illustrative embodiment, each liquid reservoir is equipped with a liquid guide tube 56 connected to a receiving tank to guide different color developers onto the first sampling unit 53. Thus, different substances on the first sampling unit can be developed by squeezing different liquid reservoirs 52.

[0111] For example, one colorimetric reagent uses AD29 and the other uses TH1. By releasing AD29 first, the RDX in the sample can be colored (appearing pink), and by releasing TH1 later, the TNT in the sample can be colored (appearing purple-red).

[0112] In one illustrative embodiment, the colorimetric agent includes, but is not limited to, at least one of AD29 (suitable for colorimetric development of RDX), TH1 (suitable for colorimetric development of TNT), sodium hydroxide or ethylamine solution (suitable for colorimetric development of TNT and tertrol), ferric chloride (suitable for colorimetric development of picric acid and dinitrodiazophenol), and thymol (suitable for colorimetric development of RDX, dinitrodiazophenol, tertrol, tiamol, etc.).

[0113] In one illustrative embodiment, such as Figure 1 As shown, the length of the sampling element 5 is adapted to the height of the detection container 1, so that when the sampling element 5 is inserted into the detection container 1, the liquid storage part 52 is located outside the detection container 1.

[0114] This implementation method facilitates the insertion and removal of the sampling piece 5 by the operator, and allows the operator to perform the detection process from the outside of the detection container 1 (e.g., by squeezing the liquid reservoir to release the colorimetric reagent). This avoids the inconvenience of having to remove the sampling piece 5 from the detection container 1 when releasing different colorimetric reagents to the first sampling section 53. This not only facilitates the operation of the comparative colorimetric test but also prevents the second sampling section 53 from becoming contaminated with colorimetric reagent or other interfering substances when passing through the through-hole 131 during the removal of the sampling piece 5, thus avoiding errors in the ion migration spectrum detection caused by re-inserting it into the detection container 1 after releasing another colorimetric reagent.

[0115] Figure 5 This is a flowchart of an explosive detection method according to an illustrative embodiment of the present disclosure.

[0116] According to the explosive detection method provided in this disclosure, such as Figure 5 As shown, steps S110 to S140 are included:

[0117] Step S110: Wipe the item to be tested so that the test feature of the item to be tested is attached to the sample carried by the two sampling parts of a sampling piece;

[0118] Step S120: Release the colorimetric reagent into the sample of a sampling section, so that all samples are separated into colorimetric samples and original color samples;

[0119] Step S130: Perform colorimetric detection on the colorimetric sample and ion mobility spectrometry detection on the primary color sample to extract characteristic information of at least a portion of the substances in all samples;

[0120] Step S140: Output whether the article has, and if so, organic and / or inorganic explosives based on the feature information.

[0121] According to an embodiment of this disclosure, in step S130, colorimetric detection and ion mobility spectrometry detection are performed simultaneously.

[0122] In one illustrative embodiment, simultaneous is characterized as simultaneous start.

[0123] In another illustrative embodiment, the progress and output information of both colorimetric detection and ion mobility spectrometry detection are performed approximately simultaneously.

[0124] According to an embodiment of this disclosure, in step S120, releasing a colorimetric agent into a sample of a sampling section to separate all samples into colorimetric samples and original color samples includes: releasing the same colorimetric agent sequentially to uniformly wet different areas of a sampling section to form colorimetric samples.

[0125] In this implementation, by releasing the same colorimetric reagent from different reservoirs sequentially, the colorimetric reagent can be more evenly absorbed and permeated through the collection section (e.g., Figure 3 The surface of the first collection unit (shown) is used to prevent errors in colorimetric detection caused by uneven distribution of the colorimetric reagent.

[0126] According to an embodiment of the present disclosure, in step S120, releasing a colorimetric agent into a sample in a sampling section to separate all samples into colorimetric samples and original color samples includes: releasing different colorimetric agents sequentially, and ensuring that the different colorimetric agents released each time at least partially overlap the areas wetted by the different colorimetric agents in the sampling section, so that the colorimetric samples located in the overlapping parts develop color multiple times.

[0127] In this implementation, by releasing different color-developing agents from the reservoir in sequence, different color-developing agents can develop color in different substances in the sample, thereby identifying the different substances in the sample.

[0128] It should also be noted that the directional terms mentioned in the embodiments, such as "up," "down," "front," "back," "left," and "right," are only for reference to the directions in the accompanying drawings and are not intended to limit the scope of protection of this disclosure. Throughout the drawings, the same elements are represented by the same or similar reference numerals. Conventional structures or constructions will be omitted where they may cause confusion in understanding this disclosure.

[0129] The embodiments of this disclosure have been described above. However, these embodiments are for illustrative purposes only and are not intended to limit the scope of this disclosure. Although various embodiments have been described above, this does not mean that the measures in the various embodiments cannot be used advantageously in combination. The scope of this disclosure is defined by the appended claims and their equivalents. Various substitutions and modifications can be made by those skilled in the art without departing from the scope of this disclosure, and all such substitutions and modifications should fall within the scope of this disclosure.

Claims

1. An explosive detection apparatus, characterized by, include: The sampling member (5) has a plurality of sampling sections on its surface, each of which is configured to accommodate a sample for sampling the same type of article; The sampler (5) includes a plurality of reservoirs (52) storing a colorimetric reagent, configured to release the colorimetric reagent into a portion of the sample in the sampling section, such that all the samples are separated into a colorimetric sample and a primary color sample. The sampling member (5) includes a housing (51) with at least two receiving grooves on its surface. A guide tube (56) is provided on the portion of the housing (51) between the reservoir (52) and at least one of the receiving grooves, so that the colorimetric reagent flows from the reservoir (52) into the receiving groove through the guide tube (56) under external pressure and wets the sample in the sampling section to form the colorimetric sample. Detection components, including: A detection container (1) is provided, which defines a chamber for accommodating the sample (5). Each chamber is divided into a first detection chamber (11) for accommodating a sampling portion carrying the colorimetric sample and a second detection chamber (14) for accommodating a sampling portion carrying the primary color sample. A heat insulation plate (13) is provided in the chamber of the detection container (1) to divide the chamber into the first detection chamber (11) and the second detection chamber (14). A through hole (131) is provided on the heat insulation plate (13) to allow a portion of the sample (5) to pass through the heat insulation plate (13) and extend into the second detection chamber (14). The first detection unit (2) is configured to perform colorimetric detection on the colorimetric sample contained in the first detection chamber (11) to extract characteristic information of at least a portion of the substances in the sample; and The second detection unit (3) is configured to perform ion mobility spectrometry detection on the primary color sample contained in the second detection chamber (14) to extract characteristic information of at least a portion of the substances in the sample; and The output component (4) is communicatively connected to the first detection unit (2) and the second detection unit (3) and is configured to output information on whether the article has and the organic and / or inorganic explosives based on the feature information extracted by the first detection unit (2) and / or the second detection unit (3).

2. The detection device of claim 1, wherein, Each of the receiving slots is provided with a sampling part, a portion of which protrudes outward from the opening of the receiving slot.

3. The detection device of claim 1, wherein, The two receiving grooves provided by the sampling member (5) are respectively formed on the two opposite surfaces of the housing (51).

4. The detection device of claim 1, wherein, The two receiving slots provided in the sampling member (5) are formed on the same surface of the housing (51).

5. The detection device according to claim 3 or 4, characterized in that An overflow pipe (55) is also provided inside the housing (51). One end of the overflow pipe (55) is located in the receiving tank that is connected to the liquid storage part (52), and the other end of the overflow pipe (55) extends to the part outside the other receiving tanks provided in the housing (51).

6. The detection device of claim 1, wherein, Each of the liquid reservoirs (52) stores the same colorimetric agent.

7. The detection device of claim 1, wherein, At least a portion of the liquid reservoir (52) stores different color-developing agents.

8. The detection device of claim 1, wherein, The inner edge of the through hole (131) is provided with an elastic seal, which abuts against the surface of the sampling member (5) when the sampling member (5) is inserted into the through hole (131) to seal the second detection chamber (14) with the first detection chamber (11).

9. The detection device of claim 1, wherein, The first detection unit (2) includes: A photodetector (21) is installed in the first detection chamber (11). The acquisition end of the photodetector (21) is positioned facing the sampling part carrying the color sample to acquire the absorption peak of the color band and the color change process displayed by the color sample. A photoelectric conversion module (22) is communicatively connected to the photodetector (21) to convert the optical signal of the photodetector (21) into an electrical signal; and The first acquisition module (23) is suitable for extracting first feature information based on the electrical signal output by the photoelectric conversion module (22).

10. The detection device of claim 1, wherein, The second detection chamber (14) is configured to perform thermal desorption on the sampling section so that at least a portion of the substances in the primary color sample form gaseous molecules; The second detection unit (3) includes: The ion migration mechanism (31) is connected to the gas outlet of the second detection chamber (14) and is configured to ionize the gas molecules, thereby separating the characteristic ions of the gas molecules in sequence and detecting the current formed by the characteristic ions. The ion migration module (32) is communicatively connected to the ion migration mechanism (31) to collect the electrical signal output by the ion migration mechanism (31) and output the ion migration spectrum. as well as The second acquisition module (33) is communicatively connected to the ion migration module (32) and is suitable for extracting second feature information based on the ion migration spectrum.

11. The detection device of claim 10, wherein, The ion migration mechanism (31) includes: An ion migration tube (317) is provided, which defines an ion reaction region and an ion migration region. An ion gate (312) is provided on the ion migration tube (317) to communicate with the second detection chamber (14). An ionization device (311) is disposed within the ion reaction zone and serves as an ionization source; and A Faraday disk (316) is disposed within the ion migration region and is adapted to receive the characteristic ions of the gaseous molecules and generate an electric current.

12. The detection device according to any one of claims 1 to 4, characterized in that The output component (4) includes: The matching module (41) is configured to extract feature information and match it with the database to obtain matching data; The display module (42) is configured to display organic and / or inorganic explosives corresponding to the matching data based on the matching data.

13. An explosive detection method based on the detection apparatus according to any one of claims 1 to 12, characterized by, include: The item to be tested is wiped so that the test features of the item are attached to the sample carried by the two sampling parts of a sampling piece; A colorimetric agent is released into the sample of the sampling unit, causing all the samples to separate into colorimetric samples and primary color samples; Colorimetric detection is performed on the colorimetric samples, and ion mobility spectrometry is performed on the primary color samples to extract characteristic information of at least a portion of the substances in all samples; as well as Based on the feature information, output information on whether the article has, and if so, organic and / or inorganic explosives.

14. The detection method according to claim 13, characterized in that, The colorimetric detection and the ion mobility spectrometry detection are performed simultaneously.

15. The method of claim 13, wherein, The step of releasing a colorimetric agent into the sample of the sampling unit, such that all the samples are separated into colorimetric samples and primary color samples, includes: The same colorimetric agent is released sequentially to uniformly wet different areas of the sampling section to form a colorimetric sample.

16. The method of claim 13, wherein, The step of releasing a colorimetric agent into the sample of the sampling unit, such that all the samples are separated into colorimetric samples and primary color samples, includes: Different colorimetric agents are released sequentially, and the areas wetted by each released colorimetric agent in the sampling section at least partially overlap, so that the colorimetric sample located in the overlapping portion develops color multiple times.

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