CN111812135A - Gold image distinguishing and identifying system - Google Patents
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- CN111812135A CN111812135A CN202010628258.1A CN202010628258A CN111812135A CN 111812135 A CN111812135 A CN 111812135A CN 202010628258 A CN202010628258 A CN 202010628258A CN 111812135 A CN111812135 A CN 111812135A
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- 229910052737 gold Inorganic materials 0.000 title claims abstract description 154
- 239000010931 gold Substances 0.000 title claims abstract description 154
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 title claims abstract description 153
- 238000010894 electron beam technology Methods 0.000 claims abstract description 28
- 238000004458 analytical method Methods 0.000 claims abstract description 13
- 239000011888 foil Substances 0.000 claims abstract description 6
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 claims description 36
- 229910052709 silver Inorganic materials 0.000 claims description 36
- 239000004332 silver Substances 0.000 claims description 36
- 229910001369 Brass Inorganic materials 0.000 claims description 22
- 239000010951 brass Substances 0.000 claims description 22
- 230000003595 spectral effect Effects 0.000 claims description 15
- 239000000203 mixture Substances 0.000 claims description 13
- 230000005484 gravity Effects 0.000 claims description 9
- 229910045601 alloy Inorganic materials 0.000 claims description 8
- 239000000956 alloy Substances 0.000 claims description 8
- 238000000034 method Methods 0.000 claims description 8
- 238000004846 x-ray emission Methods 0.000 claims description 3
- 238000007747 plating Methods 0.000 abstract description 25
- 229910001020 Au alloy Inorganic materials 0.000 abstract description 23
- 239000003353 gold alloy Substances 0.000 abstract description 23
- 238000012360 testing method Methods 0.000 abstract description 15
- 238000001514 detection method Methods 0.000 abstract description 13
- 238000013461 design Methods 0.000 abstract description 3
- 239000000463 material Substances 0.000 description 9
- 239000000758 substrate Substances 0.000 description 6
- 229910052751 metal Inorganic materials 0.000 description 5
- 239000002184 metal Substances 0.000 description 5
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 3
- 229910052802 copper Inorganic materials 0.000 description 3
- 239000010949 copper Substances 0.000 description 3
- 238000003384 imaging method Methods 0.000 description 3
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 150000002739 metals Chemical class 0.000 description 2
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 2
- 229910052725 zinc Inorganic materials 0.000 description 2
- 239000011701 zinc Substances 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000001678 irradiating effect Effects 0.000 description 1
- 239000010929 jewellery material Substances 0.000 description 1
- 239000011133 lead Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000003278 mimic effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 239000011343 solid material Substances 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
- 229910000898 sterling silver Inorganic materials 0.000 description 1
- 239000010934 sterling silver Substances 0.000 description 1
- 239000010936 titanium Substances 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
- 238000004876 x-ray fluorescence Methods 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N23/00—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00
- G01N23/22—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00 by measuring secondary emission from the material
- G01N23/223—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00 by measuring secondary emission from the material by irradiating the sample with X-rays or gamma-rays and by measuring X-ray fluorescence
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- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Analysing Materials By The Use Of Radiation (AREA)
Abstract
The invention is suitable for the technical field of gold identification, and provides a gold image distinguishing and identifying system, which comprises an image system and an analysis and identification system; the image system comprises a conveyor belt for conveying gold, the conveyor belt horizontally passes through the image acquisition box, an electron beam source is arranged at the upper part of the image acquisition box, the electron beam source generates a scanning electron beam, and the electron beam vertically irradiates the conveyor belt; the electron beam interacts with a target foil to produce an X-ray beam; the analysis and recognition system comprises an analyzer arranged at the bottom of the image acquisition box, and the analyzer is connected with the controller. Therefore, the gold detection device is simple in structure and reliable in design, can effectively improve the gold detection precision, effectively identifies whether a test object is made of sufficient gold/gold alloy or only has gold plating, saves time and labor and saves resources.
Description
Technical Field
The invention relates to the technical field of gold identification, in particular to a gold image distinguishing and identifying system.
Background
Decorative gold jewelry is usually made from only a small amount of gold alloy. Such gold alloys have gold as a major component, most of which are usually combined with other metals such as copper, zinc, silver and nickel. Gold jewelry, which consists of pure gold or pure gold alloys, is relatively expensive compared to other types of jewelry. Inexpensive jewelry is often produced from common alloys such as brass (or, sometimes, silver). The common alloy is then plated or clad with a gold layer or gold alloy layer. In order to comply with the laws governing the gold business, such jewelry must be appropriately marked to indicate the type and quality of the gold layer. For example, such labels may include "gold-plated" or "gold-electroplated" for plated objects, and "gold-filled" for objects made of gold-coated brass or silver.
In a particular example, gold plated standard pure silver is an approved jewelry material as long as a given gold plated standard pure silver (sterling silver) article is equally approved. The jewelry market is replete with brass and copper products plated with a thin gold layer, which claims to be gold products, but are counterfeit goods. While such gold plated articles are legal and acceptable under the trade law when accurately identified as plated objects, a substantial number of gold plated articles are surrendering as, or are being identified as, being made of pure gold or pure gold alloys. Therefore, there is a need for a fast and accurate method of detecting counterfeit gold.
In view of the above, the prior art is obviously inconvenient and disadvantageous in practical use, and needs to be improved.
Disclosure of Invention
In view of the above-mentioned drawbacks, the present invention provides a gold image distinguishing and identifying system, which has a simple structure and is convenient to use, and can effectively improve the gold detection precision, effectively identify whether a test object is made of gold/gold alloy or only has gold plating, save time, labor and resources.
In order to achieve the above object, the present invention provides a golden image distinguishing and identifying system, which comprises an image system and an analysis and identification system; the image system comprises a conveyor belt for conveying gold, the conveyor belt horizontally passes through an image acquisition box, an electron beam source capable of generating scanning electron beams is arranged at the upper part of the image acquisition box, and the electron beams vertically irradiate the conveyor belt; the electron beam interacts with the target foil to produce an X-ray beam; the analysis and identification system comprises an analyzer arranged right below the X-ray beam, the X-ray beam irradiates a gold to be detected and then forms an image on the analyzer, and the analyzer analyzes the image; the analyzer is connected with the controller.
According to the gold image distinguishing and identifying system, the conveying belt is provided with a gravity sensor.
According to the gold image distinguishing and identifying system, the electron beam source is located in the vacuum chamber.
According to the golden image distinguishing and identifying system, the controller is connected with the display.
According to the gold image distinguishing and identifying system, the controller comprises two data acquisition boards.
According to the gold image distinguishing and identifying system, the analyzer uses X-ray fluorescence spectroscopy to measure the ratio of the intensities of characteristic L spectral lines of gold.
According to the golden image distinguishing and identifying system of the invention, the invention also provides a method for identifying gold plating, which comprises the following steps:
a first step in which the analyzer identifies a carat value; under the condition that the Czochralski value is less than 8, the analyzer identifies whether the silver content is more than or equal to 20 percent; if the silver component is more than or equal to 20%, the analyzer identifies the object to be tested as gold-plated brass or gold-plated silver; if the silver composition is less than 20%, the analyzer identifies the item being tested as gold-plated brass; the second step is carried out under the condition that the Czochralski value is more than or equal to 8.
Secondly, the analyzer identifies the ratio of a gold L-alpha spectral line to a gold L-beta spectral line, and the analyzer identifies whether the silver component is more than or equal to 20% or not under the condition that the ratio is more than 0.84 or less than 0.60; if the silver component is more than or equal to 20%, the object to be analyzed of the analyzer is identified as gold-plated brass or gold-plated silver; if the silver composition is less than 20%, the article being analyzed is identified as gold-plated brass; and the ratio of the gold L-alpha spectral line and the gold L-beta spectral line identified by the analyzer is within the range of 0.60-0.84, and the analyzer identifies the gold-filled object or the alloy object.
The invention aims to provide a gold image distinguishing and identifying system, which can automatically run a conveyor belt by arranging a gravity sensor, save time and labor and save resources, and can test whether an object is made of gold/gold alloy or only has gold plating by arranging an analyzer. In conclusion, the beneficial effects of the invention are as follows: simple structure, the design is reliable, can effectively improve the detection precision of gold, and effective discernment test object is made by sufficient gold/gold alloy or only has the gilt, labour saving and time saving resources are saved.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a flow chart of the present invention;
in the figure, 102-conveyer belt, 103-gravity sensor, 110-electron beam source, 112-electron beam, 108-X-ray beam, 114-target foil, 124-controller, 2-collection box, 5-gold to be tested, 6-analyzer, 8-display.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail with reference to the following embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
It should be noted that in the description of the present invention, the terms of direction or positional relationship indicated by the terms "upper", "lower", "left", "right", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, which are only for convenience of description, and do not indicate or imply that the device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.
Furthermore, it should be noted that, in the description of the present invention, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
The invention provides a gold image distinguishing and identifying system which comprises an image system and an analysis and identification system.
Referring to fig. 1, the image system includes a conveyor belt 102 for conveying gold, the conveyor belt 102 is provided with a gravity sensor 103, when an object is placed on the conveyor belt 102, the gravity sensor 103 senses gravity, and the driving motor drives the conveyor belt 102 to operate, so as to drive the detected gold 5 to operate.
The analysis and recognition system comprises an analyzer 6 arranged at the bottom of the image acquisition box 2, the analyzer 6 is positioned under an X-ray beam 108, the X-ray beam 108 irradiates a gold 5 to be detected to form an image on the analyzer 6, and the analyzer 6 analyzes the image projected by the gold.
The analyzer 6 is connected to a controller 124, which controller 124 includes two data acquisition boards, one for analyzing data reflected in the analyzer 6 and the other for controlling the electron beam source 110 and the electron beam 112.
The controller 124 is electrically connected with the electron beam source 110, and when the conveyor belt 2 moves, the controller 124 controls the electron beam source 110 to be opened to perform transmission operation on the gold 5 to be detected.
The controller 124 is connected with a display, and can display the image of the tested gold 5 after transmission on the display 8 and display the detection result.
The analyzer 6 can detect the metal in the substrate material (underneath any gold plating). These detected metals may include lead, copper, zinc, silver, or other substrate materials. The analyzer 6 can distinguish between gold plated and bulk gold materials by comparing the ratio of the L-alpha and L-beta X-ray lines of gold. The analyzer 6 uses X-ray fluorescence spectroscopy to measure the ratio of the intensities of the characteristic L-lines of gold. When implemented using the analyzer 6, the system non-destructively measures the ratio of the L-lines of the excited gold in the test object and determines whether the test object is made of a gold/gold alloy or has only gold plating.
X-ray fluorescence involves directing X-rays from an external source to an X-ray tube at the material or article being tested. These external X-rays interact with atoms of the material or article being tested. Some X-rays can knock electrons out of the lower energy shells of atoms, which causes electrons from the higher shells to fill the gaps. This process causes the release of energy by atoms in the form of X-ray photons, the energy of which is specific and unique to the atom of a given element. The photons released from the atoms of the material can then be detected and identified. Each element has its own, unique X-ray signature. A given X-ray tube can produce a continuous spectrum of X-ray energy. The analyzer 6 can then filter out energy that is not needed for the analysis of a particular element.
Characteristic L-series X-rays of gold in pure gold and clark gold have a penetration depth of about 10 to 12 microns (μm). The two main gold lines, L-alpha and L-beta, have different energies, 9.71 and 11.45keV, respectively. Thus, the L-alpha line is absorbed more strongly by a given gold medium than the L-bata line. The intensity of both L-lines can be measured in relatively thin layers of pure gold that can vary in their thickness (e.g., in steps of 1 μm from, say, 0.5 μm to 20 μm). By observation, both intensities increase monotonically with the thickness of the gold layer until each of them reaches its respective "saturation" plateau at about 15 to 20 μm (self-absorption effect). Beyond the thickness of the gold, there is essentially no additional increase in strength. Thus, the absorption of the two L-lines is affected by the increased thickness of gold. Note, however, that since the L-alpha line is less energetic, the L-alpha line reaches its saturation plateau at a faster rate than the more energetic L-beta line. Thus, the ratio of two lines at any given thickness between 0 and about 15 μm is not constant, but varies with thickness.
The analyzer 6 can also be used for clark and clark plating. The carat number of gold is an indication of the percent composition or content of gold in a given gold alloy. The gold karat value uses a linear system to represent the percent composition. For example, 24K gold means 100% gold, 12K gold means 50% gold, and 14 carat gold means 58.3% gold. The analyzer 6 can determine the composition of all materials in the target object and return a carat value based on the gold composition percentage. In jewelry trading, there are various legal gold percentages that can be identified and sold as jewelry. For example, for solid materials or plating, some countries require at least 9 or 10 carats of gold to be recognized as a gold alloy. This means that if gold is detected as e.g. 7 carat gold, this indicates that the corresponding article is not an acceptable gold alloy. Such a low carat value may mean a low gold percentage or very thin gold plating applied to a given non-gold object.
The working principle of the invention is as follows:
the gold 5 to be detected is placed on the conveyor belt 102, the gravity sensor 103 on the conveyor belt 102 senses gravity, the drive motor drives the conveyor belt 102 to operate, the gold 5 to be detected is conveyed to the range of the X-ray beam 108 in the image acquisition box 2 to be projected and imaged, the projected image is received by the analyzer 6, and the analyzed image and data are displayed on the display 8.
Referring to fig. 2, the present invention further provides a method for identifying gold plating according to the gold image distinguishing and identifying system, comprising the following steps: (1) determining percent gold content (carat value), (2) determining the ratio of gold L-alpha and gold L-beta lines. Using these items of information identified or calculated, the analyzer 6 can evaluate the information to identify the gold plating. The corresponding apparatus can be calibrated for bulk alloy analysis to calculate all metal percentages.
In a first step, the analyzer 6 identifies whether the gold to carat value is less than 8 (less than 33% gold). In the case where the Czochralski value is less than 8, the analyzer 6 recognizes whether or not the silver content is not less than 20%. If the silver composition is 20% or more, the analyzer 6 recognizes the measured article as gold-plated brass or gold-plated silver. If the silver composition is less than 20%, the analyzer 6 recognizes the measured article as gold-plated brass. In other embodiments, the analyzer 6 can identify a different substrate material or simply identify that the substrate is not a gold alloy or a legitimate gold alloy. Most gold plated jewelry items have plating on brass or silver, although gold plating on other substrates may be possible. Note that the article being tested is a metal article, which has been represented as a gold article (such as by a person), or has the appearance of gold (at least on the outer surface).
Gold plating can be very thin and can return an indication of 10% gold (2.4 carats) when combined with a substrate. In this case, since the percentage of gold is too low, it is easy to determine that the article to be measured is not a gold alloy. That is, even if the article being tested is a foot alloy with a low percentage of gold, such a low carat number is not considered a legitimate gold alloy and is thus a counterfeit gold alloy or gold-plated object. In either case, it is considered counterfeit. Note that if the object under test happens to be a foot alloy with, for example, 10% gold, the object under test may still have some value as an object from which gold may be extracted, but may not be legally expressed as a gold alloy or jewelry item. This can be used as a first identification that the item being analyzed is a plated object. With such results, it is optional to see if the ratio of the spectral lines is to be looked at, since the low carat number determination may be sufficient to infer gold plating. In another case, the gold content may be identified as 8 or 9 carats. In this regard, since such a carat number is close to that permitted in the market, more than carat number analysis is required to identify gold plating. In this case, the system then looks at the ratio of the two spectral lines to determine whether the article is coated. If the analyzer 6 recognizes a carat value of 8 or more (33% gold or more), the analyzer 6 performs the second step.
Second, analyzer 6 identifies whether the ratio of the gold L-alpha line to the gold L-beta line is greater than 0.84 or less than 0.60. That is, whether the ratio is outside the range of 0.60-0.84. The ratio can be calculated from the net intensity. The net intensity is the intensity of the light signal impinging on the detector pixel cell per second. In the case where the ratio is more than 0.84 or less than 0.60, the analyzer 6 then identifies whether or not the silver composition is not less than 20%. If the silver composition is 20% or more, the analyzer 6 recognizes the measured article as gold-plated brass or gold-plated silver. If the silver composition is less than 20%, the analyzer 6 recognizes the measured article as gold-plated brass. The analyzer 6 recognizes that the ratio of the gold L-alpha spectral line to the gold L-beta spectral line is within the range of 0.60 to 0.84, and the analyzer 6 recognizes as a gold-filled object or an alloy object. Note that some gold-plated objects can mimic 14 carat pieces, and thus relying on carat analysis alone may not be sufficient to accurately verify plating. However, using ratio analysis, the analyzer 6 can identify objects that appear to be 14 carats of gold that are actually gold plated objects. The ratio of the gold lines should reach a value of 1.1 when the gold plating thickness approaches 0 thickness. However, when the plating is extremely thin, such as less than 0.2 microns, the net intensity of the gold lines is very small and as such they are measured with large uncertainties. Thus, the measured intensity of the first gold line may be much less than the measured intensity of the second gold line, resulting in a ratio much less than the predetermined value of 0.84. This is why a ratio of 0.60 can be used as an additional technique to verify gold plating. Such low ratios are a result of extremely thin gold plating. The exact value of the predetermined ratio is specific to the given analyzer 6, which is determined for the given analyzer 6. By way of non-limiting example, other analyzers 6 may analyze the gold lines such that the gold line ratio threshold (beyond which gold plating is inferred) may be 0.63, 0.77, 0.86, etc. Although it is not expected that the various analyzers 6 will differ greatly from the examples described herein, other analyzers 6 may use different values. In any analyzer 6, the basic technique is the same, since after testing and/or calibration, the analyzer 6 is configured to detect gold plating according to its respective X-ray detection and measurement mechanism. The varying ratio can be identified until the thickness of the gold/gold alloy reaches 15 microns, after which the ratio becomes substantially constant.
In order to verify the performance of the golden image distinguishing and identifying system of the present invention, the present invention provides the following embodiments.
Example 1
The first test object is placed on the conveyor belt 102, the conveyor belt 102 conveys the first test object to the range of the X-ray beam 108 in the image acquisition box 2 for projection imaging, the projected image is received by the analyzer 6, the analyzer 6 measures a Kioka value of 6, then the analyzer 6 recognizes that the silver component is 18%, and then the analyzer 6 recognizes that the measured object is gold-plated brass. The controller 124 controls the display 8 to display that the first detection object is gold-plated brass.
Example 2
The second test object is placed on the conveyor belt 102, the conveyor belt 102 conveys the second test object to the area of the X-ray beam 108 in the image acquisition box 2 for projection imaging, the projected image is received by the analyzer 6, the analyzer 6 measures a Kkara value of 7, and then the analyzer 6 recognizes that the silver component is 24% and the analyzer 6 recognizes that the measured object is gold-plated brass or gold-plated silver. The controller 124 controls the display 8 to display that the first detection object is gold-plated brass or gold-plated silver.
Example 3
And (3) putting the third detection object on the conveyor belt 102, conveying the third detection object to the range of the X-ray beam 108 in the image acquisition box 2 by the conveyor belt 102 for projection imaging, receiving the projected image by the analyzer 6, identifying the ratio of a gold L-alpha spectral line to a gold L-beta spectral line by the analyzer 6 to obtain a ratio of 0.9, identifying the silver component by the analyzer 6 to be 16%, and identifying the detected object as gold-plated brass by the analyzer 6. The controller 124 controls the display 8 to display that the first detection object is gold-plated brass.
It can be seen from the above embodiments that this method can effectively improve the detection accuracy of gold, and effectively identify whether the test object is made of gold/gold alloy or has only gold plating.
In conclusion, the gravity sensor is arranged, so that the conveyor belt can automatically run, time and labor are saved, resources are saved, and the analyzer is arranged, so that whether the object is made of gold/gold alloy or only has gold plating can be tested. The invention has the beneficial effects that: simple structure, the design is reliable, can effectively improve the detection precision of gold, and effective discernment test object is made by sufficient gold/gold alloy or only has the gilt, labour saving and time saving resources are saved.
The present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof, and it should be understood that various changes and modifications can be effected therein by one skilled in the art without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (7)
1. A golden image distinguishing and identifying system is characterized by comprising an image system and an analysis and identification system;
the image system comprises a conveyor belt for conveying gold, the conveyor belt horizontally passes through an image acquisition box, an electron beam source capable of generating scanning electron beams is arranged at the upper part of the image acquisition box, and the electron beams vertically irradiate the conveyor belt; the electron beam interacts with the target foil to produce an X-ray beam;
the analysis and identification system comprises an analyzer arranged right below the X-ray beam, the X-ray beam irradiates a gold to be detected and then forms an image on the analyzer, and the analyzer analyzes the image; the analyzer is connected with the controller.
2. The golden image distinguishing and identifying system according to claim 1, wherein the conveyor belt is provided with a gravity sensor.
3. The golden image differential identification system according to claim 1, wherein the electron beam source is located within a vacuum chamber.
4. The golden image distinguishing identification system of claim 1, wherein the controller is coupled to a display.
5. The golden image distinguishing and identifying system of claim 1, wherein the controller comprises two data acquisition boards.
6. The golden image differential identification system of claim 1, wherein the analyzer uses X-ray fluorescence spectroscopy to measure the ratio of the intensities of characteristic L-lines of gold.
7. A method for identifying gold content according to the gold image distinguishing and identifying system of any one of claims 1 to 7, comprising the following steps:
in a first step, the analyzer identifies a carat value. Under the condition that the Czochralski value is less than 8, the analyzer identifies whether the silver content is more than or equal to 20 percent; if the silver component is more than or equal to 20%, the analyzer identifies the object to be tested as gold-plated brass or gold-plated silver; if the silver composition is less than 20%, the analyzer identifies the item being tested as gold-plated brass; the second step is carried out under the condition that the carat value is more than or equal to 8;
secondly, the analyzer identifies the ratio of a gold L-alpha spectral line to a gold L-beta spectral line, and the analyzer identifies whether the silver component is more than or equal to 20% or not under the condition that the ratio is more than 0.84 or less than 0.60; if the silver component is more than or equal to 20%, the object to be analyzed of the analyzer is identified as gold-plated brass or gold-plated silver; if the silver composition is less than 20%, the article being analyzed is identified as gold-plated brass; and the ratio of the gold L-alpha spectral line and the gold L-beta spectral line identified by the analyzer is within the range of 0.60-0.84, and the analyzer identifies the gold-filled object or the alloy object.
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| CN107102018A (en) * | 2012-02-03 | 2017-08-29 | 赛默科技便携式分析仪器有限公司 | Detected using the metal reliability of the object of radiation |
| JP2018200245A (en) * | 2017-05-29 | 2018-12-20 | 国立研究開発法人物質・材料研究機構 | Fluorescent x-ray analyzer |
| CN208568636U (en) * | 2018-08-02 | 2019-03-01 | 深圳市威图医疗科技有限公司 | A kind of radioscopic image detection device |
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