CN112285108A - Portable noble metal interlaminar adulteration nondestructive testing device based on infrared thermal imaging technology - Google Patents
Portable noble metal interlaminar adulteration nondestructive testing device based on infrared thermal imaging technology Download PDFInfo
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- CN112285108A CN112285108A CN202011127535.7A CN202011127535A CN112285108A CN 112285108 A CN112285108 A CN 112285108A CN 202011127535 A CN202011127535 A CN 202011127535A CN 112285108 A CN112285108 A CN 112285108A
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- 238000001931 thermography Methods 0.000 title claims abstract description 60
- 238000005516 engineering process Methods 0.000 title claims abstract description 30
- 238000009659 non-destructive testing Methods 0.000 title claims abstract description 30
- 229910000510 noble metal Inorganic materials 0.000 title claims description 23
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 41
- 230000005284 excitation Effects 0.000 claims abstract description 33
- 239000011229 interlayer Substances 0.000 claims abstract description 23
- 238000001514 detection method Methods 0.000 claims abstract description 13
- 239000010410 layer Substances 0.000 claims abstract description 12
- 238000000034 method Methods 0.000 claims abstract description 7
- 238000007405 data analysis Methods 0.000 claims description 26
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 19
- 229910052802 copper Inorganic materials 0.000 claims description 19
- 239000010949 copper Substances 0.000 claims description 19
- 238000009413 insulation Methods 0.000 claims description 19
- 238000009529 body temperature measurement Methods 0.000 claims description 9
- QVFWZNCVPCJQOP-UHFFFAOYSA-N chloralodol Chemical compound CC(O)(C)CC(C)OC(O)C(Cl)(Cl)Cl QVFWZNCVPCJQOP-UHFFFAOYSA-N 0.000 claims description 9
- 239000002120 nanofilm Substances 0.000 claims description 3
- 238000001816 cooling Methods 0.000 claims description 2
- 238000012545 processing Methods 0.000 claims description 2
- 238000012360 testing method Methods 0.000 claims description 2
- 238000005192 partition Methods 0.000 claims 1
- 239000010970 precious metal Substances 0.000 abstract description 20
- 238000003384 imaging method Methods 0.000 abstract description 3
- 239000000463 material Substances 0.000 abstract description 2
- 230000009286 beneficial effect Effects 0.000 abstract 3
- 238000009835 boiling Methods 0.000 abstract 1
- 230000001066 destructive effect Effects 0.000 abstract 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 12
- 229910052737 gold Inorganic materials 0.000 description 12
- 239000010931 gold Substances 0.000 description 12
- 238000010438 heat treatment Methods 0.000 description 6
- 238000013461 design Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 229910052741 iridium Inorganic materials 0.000 description 4
- GKOZUEZYRPOHIO-UHFFFAOYSA-N iridium atom Chemical compound [Ir] GKOZUEZYRPOHIO-UHFFFAOYSA-N 0.000 description 4
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 4
- 229910052721 tungsten Inorganic materials 0.000 description 4
- 239000010937 tungsten Substances 0.000 description 4
- 230000005540 biological transmission Effects 0.000 description 2
- 238000004088 simulation Methods 0.000 description 2
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000001739 density measurement Methods 0.000 description 1
- 238000007667 floating Methods 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 229910052744 lithium Inorganic materials 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 238000000053 physical method Methods 0.000 description 1
- 238000005057 refrigeration Methods 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- 239000000741 silica gel Substances 0.000 description 1
- 229910002027 silica gel Inorganic materials 0.000 description 1
- 230000000638 stimulation Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000012549 training Methods 0.000 description 1
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/84—Systems specially adapted for particular applications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N25/00—Investigating or analyzing materials by the use of thermal means
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/20—Metals
- G01N33/202—Constituents thereof
- G01N33/2028—Metallic constituents
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F30/00—Computer-aided design [CAD]
- G06F30/20—Design optimisation, verification or simulation
- G06F30/23—Design optimisation, verification or simulation using finite element methods [FEM] or finite difference methods [FDM]
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F2119/00—Details relating to the type or aim of the analysis or the optimisation
- G06F2119/08—Thermal analysis or thermal optimisation
Abstract
The invention discloses a portable precious metal interlayer adulteration nondestructive testing device based on an infrared thermal imaging technology. The method is based on an infrared thermal imaging technology, uses a constant-temperature boiling water bath as an excitation heat source, adopts a data time synchronization imaging technology, and utilizes a database terminal comparison analysis function to realize a rapid criterion for the non-destructive detection of adulteration between precious metal layers. The device can quickly and accurately judge whether the precious metal layers are adulterated, does not damage the appearance of the precious metal material, is convenient to carry, and is simple and easy to use. The device is suitable for wide precious metal trading markets, is beneficial to a seller to effectively perform nondestructive testing on a precious metal device in time, is beneficial to a consumer to effectively reduce the loss per se, and is beneficial to the precious metal industry to improve the honesty of the whole society.
Description
Technical Field
The invention relates to the field of nondestructive testing of noble metal industry, in particular to a portable nondestructive testing device for adulteration between noble metal layers based on an infrared thermal imaging technology.
Background
At present, the precious metal trading market in China is increasingly vigorous, and particularly in the gold trade industry: in 2018, the consumption of gold jewelry in China is 736.29 tons, and the consumption is increased by 5.71% on a year-by-year basis; the gold bar is 285.2 tons, and the growth is 3.19 percent. However, the problem of adulteration of the national standard gold interlayer in the market is increasingly serious, particularly the adulteration of tungsten or iridium elements, so that the phenomena of gold cheating and fraudulent consumption are frequently seen. The tungsten and iridium have physical characteristics close to those of gold and have strong chemical stability, but the price difference is very large, the average price of the gold is 360 yuan/g, the average price of the tungsten is 0.28 yuan/g, the average price of the iridium is 393 yuan/g, a counterfeiter only needs to mix a large amount of tungsten into the gold bar and balance the density with a small amount of iridium, the fake-doped gold bar with extremely low cost can be manufactured, and the huge profit difference becomes the driving force of the counterfeiter.
After the noble metal layers are adulterated, the characteristics of the quality, the appearance and the like of the whole sample are basically consistent with those of pure gold, and common people cannot distinguish true from false by naked eyes or a physical method, so that huge economic loss is caused to consumers, the gold market is influenced, and the integrity crisis is emerged. At present, most of precious metal detection methods, such as density measurement, a fire method, physical bending and other simple means, lack accurate and effective theoretical criteria and are easy to mislead and deceive by lawbreakers. The existing scientific precious metal detection mostly needs to perform re-casting sampling on precious metals, so that the original structure is damaged, and the instrument is heavy, large, expensive and long and complex in operation. Therefore, finding a more effective and convenient device for identifying the adulteration of the precious metal is one of the technical problems which are urgently needed to be solved at present.
Disclosure of Invention
The invention aims to solve the technical problems and provides a portable precious metal interlayer adulteration nondestructive testing device based on an infrared thermal imaging technology.
The invention relates to a portable precious metal interlayer adulteration nondestructive testing device based on an infrared thermal imaging technology, which comprises a suitcase, and an infrared thermal imaging module, a power supply module, a sample objective table, a data analysis terminal module, a temperature measurement module and a data time synchronization function module which are arranged in the suitcase.
The constant-temperature thermal excitation module is used for applying cold excitation or thermal excitation to the sample stage to realize temperature control on the detected sample;
the infrared thermal imaging module is used for acquiring an infrared thermal imaging image of a detection sample placed on the sample stage.
The temperature measurement module is used for measuring and detecting the temperature data of the sample.
The data time synchronization function module is used for acquiring image data and temperature data in real time and synchronously sending the image data and the temperature data to the data analysis terminal module.
The data analysis terminal module is used for receiving and displaying the image data and the temperature data.
The power supply module is used for supplying power.
Meanwhile, the invention is also provided with a darkroom. The darkroom is a cover body with an opening on the top surface and is buckled with the top surface of the constant temperature water bath box; the darkroom is provided with a socket communicated with the interior of the darkroom for being plugged with the infrared thermal imaging module, the socket is closed by the external thermal imaging module, and no light irradiates the darkroom.
The invention has the advantages that:
1. the portable precious metal interlayer adulteration nondestructive testing device based on the infrared thermal imaging technology can be used for synchronously imaging whether a precious metal sample is adulterated or not in real time in the using process, accurately and quickly comparing, is simple and convenient to operate, does not need a complex flow, and does not damage the structure of the sample;
2. the invention relates to a portable noble metal interlayer adulteration nondestructive testing device based on an infrared thermal imaging technology, which has the advantages of cold source excitation, high efficiency and stability: the prototype can be excited by a cold source, the difference characteristic of the thermal conductivity between samples is efficiently amplified, and the influence of water vapor on detection is reduced.
3. The invention relates to a novel portable precious metal interlayer adulteration nondestructive testing device based on an infrared thermal imaging technology, which applies an algorithm and fully learns: the intelligent recognition of the thermal imaging graph is realized through a large amount of data and specific algorithm training.
4. According to the portable noble metal interlayer adulteration nondestructive testing device based on the infrared thermal imaging technology, the infrared thermal imaging instrument of the standard database is constructed according to simulation data, a sample can be imaged in real time, the data analysis system receives, analyzes and compares the sample in real time, the comparison database constructed by using finite element simulation results can be used, and adulteration gold can be rapidly and accurately identified.
5. The invention relates to a portable precious metal interlayer adulteration nondestructive testing device based on an infrared thermal imaging technology, which comprises the following steps of constructing a darkroom, eliminating interference: and a darkroom and related tools are constructed, so that the interference of external light on the infrared lens is eliminated, and the accuracy of a detection result is ensured.
6. The portable precious metal interlayer adulteration nondestructive testing device based on the infrared thermal imaging technology is light and convenient to carry and transport in the carrying process, and the design of the foldable miniaturized box body and the easily detachable rod piece ensures that workers can effectively unfold to work in real time.
Drawings
FIG. 1 is a schematic view of the overall structure of a portable noble metal interlayer adulteration nondestructive testing device based on an infrared thermal imaging technology;
fig. 2 is a schematic structural diagram of a constant-temperature thermal excitation module in the portable noble metal interlayer adulteration nondestructive testing device based on the infrared thermal imaging technology.
Fig. 3 is a schematic view of the design of the vent holes in the constant temperature thermal stimulation module according to the present invention.
FIG. 4 is a schematic structural diagram of an infrared thermal imaging module in the portable noble metal interlayer adulteration nondestructive testing device based on the infrared thermal imaging technology.
FIG. 5 is a block diagram of the portable noble metal interlayer adulteration nondestructive testing device based on the infrared thermal imaging technology.
FIG. 6 is a schematic diagram of a darkroom structure in the portable noble metal interlayer adulteration nondestructive testing device based on the infrared thermal imaging technology.
FIG. 7 is a schematic view of the connection between the lens and the darkroom of the portable noble metal interlayer adulteration nondestructive testing device based on the infrared thermal imaging technology.
In the figure:
1-suitcase 2-constant temperature thermal excitation module 3-infrared thermal imaging module
4-power module 5-sample objective table 6-data analysis terminal module
7-temperature measurement module 8-data time synchronization function module 9-darkroom
101-upper cover 102-lower box 201-red copper bar
202-constant temperature water bath tank 203-temperature control part 204-heat insulation plate
205-exhaust 206-nano film 207-fan
301-lens 302-lens holder 303-rotation unit
304-adjusting rod A305-adjusting rod B306-base
307-hinge A308-hinge B309-hinge C
601-foldable bracket 601 a-connecting plate 601 b-fixing plate
801-radio frequency chip 802-mobile power supply 901-lens socket
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
The invention relates to a portable precious metal interlayer adulteration nondestructive testing device based on an infrared thermal imaging technology, which comprises a suitcase 1, a constant-temperature thermal excitation module 2, an infrared thermal imaging module 3, a power supply module 4, a sample objective table 5, a data analysis terminal module 6, a temperature measurement module 7 and a data time synchronization function module 8, and is shown in figure 1.
The suitcase 1 is used as a carrier of the whole device and is provided with an upper cover 101 and a lower case 102, and the rear sides of the upper cover 101 and the lower case 102 are hinged through a hinge to form a flip structure. Wherein, a constant temperature thermal excitation module 2, an infrared thermal imaging module 3, a power supply module 4 and a sample object stage 5 are arranged in the lower box body 102. The upper cover 101 is of a concave structure, and the data analysis terminal module 6 is installed on the inner wall.
As shown in fig. 2, the constant temperature thermal excitation module 2 is disposed in the middle of the lower box 2, and includes a copper bar 201, a constant temperature water bath 202, and a temperature control unit 203. The constant temperature water bath 202 is a box structure with an open top, and has a rectangular cross section, and the inside of the box structure is used for containing a cold excitation source or a heat excitation source. The constant temperature water bath 202 is arranged in the middle of the lower box body, and two opposite sides of the bottom surface are provided with ear-ring-shaped countersunk hole structures for matching with screws to fix the constant temperature water bath 202 and the bottom surface of the lower box body 2.
Wherein, the inner wall of the constant temperature water bath 202 is designed with a shoulder on the circumference near the top surface for carrying the heat insulation board 204, the heat insulation board 204 isolates the interference of the vapor to the infrared thermal imaging module 3 when the excitation source in the constant temperature water bath heats or refrigerates, and the excitation source in the water bath is convenient to replace. The top surface of the heat insulation board 204 is provided with a protrusion at a diagonal position for holding by hand so that the heat insulation board 204 can be taken out flexibly; meanwhile, a through hole is formed on the top surface of the heat insulation plate 204 for injecting an excitation source into the constant temperature water bath 202 and installing the temperature control part 203. Four internal thread blind holes are formed in the middle of the bottom surface of the constant-temperature water bath tank 202, and the centers of the four blind holes are respectively positioned at four right-angle trapezoidal corners; meanwhile, the middle part of the heat insulation plate 204 is provided with four through holes corresponding to the blind holes for inserting the red copper bar 201.
The four red copper rods 201 penetrate through the through holes respectively, the bottom ends of the four red copper rods 201 are fixedly connected with the corresponding blind holes through threads, the four red copper rods 201 are fixed, and the blind holes and the through holes are arranged, so that a right-angle trapezoidal vertex heat source space layout is formed among the four red copper rods 201. Four red bar copper 201 tops are used for supporting sample objective table 5 of being made by heat conduction material (heat conduction silica gel), the design of 5 bottom surfaces of sample objective table has four blind holes, four red bar copper 201 tops insert four blind holes respectively, realize with sample objective table between 5 fixed, make full contact between red bar copper 201 and sample objective table 5, be used for setting up the detection sample by last, enlarge the bearing space that detects the sample by sample objective table 5, as the heat source to the middleware of the detection sample heat conduction of placing on sample objective table 5 simultaneously. The arrangement of the copper bar 201 can support the sample stage 5 more stably, and also can heat the sample stage 5 and the sample uniformly.
The temperature control component 203 can adopt a heating rod or a refrigerating rod, and the tail end of the temperature control component is provided with a block. The heating rod or the refrigerating rod is inserted into the constant temperature water bath box 202 through the through hole on the heat insulation plate 204, and the blocking block is inserted into the through hole of the heat insulation plate 204 to block the through hole, so that the inside of the constant temperature water bath box 202 is in a closed environment. Temperature control of the excitation source within the constant temperature water bath 202 is achieved by a temperature control component 203.
As shown in fig. 3, a side of the constant temperature water bath 202 is a sandwich structure, four exhaust ports 205 are formed at the opposite positions of the inner layer and the outer layer of the side, the nano film 206 is attached to the outer wall of the inner layer, and the heat dissipation fan 207 is installed in the sandwich layer, so that water vapor can be exhausted from the exhaust ports 205 when the thermal excitation mode is used, on one hand, the water vapor is prevented from floating upwards to interfere with the detection of the infrared thermal imaging module 3, and on the other hand, the constant temperature water bath 202 is prevented from being broken due to the over-high expansion of the temperature.
Before the constant-temperature thermal excitation module 2 starts to work, the heat insulation plate 204 is firstly buckled on the upper part of the constant-temperature water bath 202, the red copper rod 201 is inserted into the constant-temperature water bath 202 through the through hole on the heat insulation plate 204 and is fixed, and at the moment, a proper excitation source can be injected into the constant-temperature water bath 202 from the opening hole on the heat insulation plate 204. Then, a thermal excitation mode or a cold excitation mode is selected according to requirements, a required heating rod or the required cold rod is inserted into the constant-temperature water bath box through the opening on the heat insulation plate 204, and the opening on the heat insulation plate 204 is blocked by a plug. Finally, the sample object stage 5 is installed at the top end of the red copper rod 201, a sample to be detected is placed on the sample object stage 5, at the moment, a power supply is turned on, and the heating rod or the refrigerating rod starts to work to heat or refrigerate the excitation source. When the thermal excitation mode is used, the cooling fan is also required to be turned on; when the constant-temperature thermal excitation module 2 stops working, the heating/refrigerating power supply is firstly turned off, and then the sample to be measured, the sample stage 5, the red copper bar 201 and the heat insulation plate 204 are sequentially taken down and stored.
As shown in fig. 4, the infrared thermal imaging module 3 is installed at the left part of the lower case 2, and includes a lens 301, a lens supporting case 302, a rotating unit 303, an adjusting lever a304, an adjusting lever B305, and a base 306. The lens 301 is a circular 9.5mm lens and is used for shooting an infrared thermal imaging image of a sample on the sample stage 5. The periphery of the lens 301 is mounted on the front end face of the lens supporting box 302 through a rotating unit 303 with a focusing function, the lens 301 can extend out or retract into the lens supporting box and the lens 301 can rotate automatically through the rotating unit 303, so that the lens 301 can adjust the contraposition focal length, the imaging resolution is not higher than 0.5 ℃, and the temperature testing range is-20 ℃ to 100 ℃. An image acquisition module is further installed inside the lens supporting box 302, and is used for acquiring an infrared thermal image shot by the lens. The terminal of the lens supporting box 302 is provided with a mounting joint, the mounting joint is mounted at the top ends of two adjusting rods A304 through a hinge A307 with adjustable tightness, and the bottom ends of the two adjusting rods A304 are respectively connected with the top ends of two adjusting rods B305 through hinges B308 with adjustable tightness and the inside of the top ends of the two adjusting rods B305. The bottom ends of the two adjusting rods B305 are arranged at the two sides of the top joint of the base 306 through hinges C309 which are adjustable in tightness and have horizontal freedom degrees. The base 306 is fixedly arranged on the front bottom surface of the left side of the lower box body. Thus, the adjustable rod-shaped support structure is formed by the adjustment rod a304, the adjustment rod B305, and the hinges, thereby adjusting the posture of the lens 301. Through the structural design, the two adjusting rods A304 can be rotatably collected between the two adjusting rods B307, so that after the infrared thermal imaging module 3 forms the foldable infrared thermal imaging module 3, the folded infrared thermal imaging module 3 is integrally positioned on the left side inside the lower box body 2 for storage. The lens supporting box 302 is further provided with a data collecting module for collecting an infrared thermal image captured by the lens 301.
The data analysis terminal module 6 is a small notebook computer or an embedded microcomputer with a display function, and is provided with a display screen for displaying a detection result, an internal circuit board which is used for realizing the function of the data analysis terminal module and contains an integrated operation pivot, an external output interface end and a built-in power supply; meanwhile, an image processing algorithm and a standard sample temperature characteristic database are embedded in the data analysis terminal module 6, and an external I/O port required for exporting data is arranged at the bottom of the data analysis terminal module, wherein the I/O port comprises but is not limited to USB2.0, USB3.0 and Type C. As shown in fig. 1, the data analysis terminal module of the above-described structure is mounted on the upper cover 101 through a foldable bracket 601, and the foldable bracket 601 includes a connection plate 601a and a fixing plate 601 b. The fixing plate 601b is fixedly mounted on the inner wall of the upper cover 101 by screws, the bottom end of the connecting plate 601a is connected with the side edge of the fixing plate 601b by a hinge pin, the top end of the connecting plate 601a is hinged with a hinge surface designed at the rear side of the data analysis terminal module 6 by the hinge pin, and the hinge pin shafts are all along the left and right directions of the upper cover 101, so that the data analysis terminal module 6 can freely and smoothly rotate and fold. The connecting plate 601a and the fixing plate 601b are hinged to each other, and a limiting inclined surface is designed at one section, so that after the connecting plate 601a is unfolded, the limiting inclined surface is in contact with the upper cover 101 to limit the rotation of the connecting plate 601a, and the connecting plate 601a and the fixing plate 601b are unfolded at an angle of 145 degrees.
The temperature measurement module 7 is a holder with a temperature sensor and is used for clamping the sample object stage 5 and recording the surface temperature of the sample on the sample object stage 5 in real time.
The data time synchronization function module 8 comprises a LoRa radio frequency chip 801 and a 3.8V mobile power supply 802 (such as a charger) embedded in an interlayer at the rear side of the constant temperature water bath 202, and an openable cover body is designed on the side surface of the interlayer and used for taking out and charging the mobile power supply 802. As shown in fig. 5, a power interface of the LoRa rf chip 801 is connected to an output interface of the 3.8V mobile power supply 802, and the 3.8V mobile power supply 802 supplies power to the LoRa. The temperature measuring module 7 is connected to a data input pin (RXD), a high level pin (VCC) and a ground pin (GND) of the LoRa radio frequency chip 801 through a lead; the data acquisition module in the infrared thermal imaging module 3 is connected with a data input pin (RXD) of the LoRa radio frequency chip 801 through a transmission wire. The LoRa rf chip 801 further implements real-time data transmission with the data analysis terminal module 6 through a wireless communication protocol.
The LoRa radio frequency chip is used for receiving temperature data measured by the temperature measuring module 7 and image data acquired by the data acquisition module and synchronously sending the temperature data and the image data to the data analysis terminal module 6; further processed by the data analysis terminal module 6, and imaged on a display screen in real time; meanwhile, the data analysis terminal module 6 compares the temperature distribution characteristics by using a built-in standard database and gives a true and false criterion result on a display screen. Therefore, by the data time synchronization function module 8, the real-time monitoring of the sample temperature and the infrared thermal imaging graph along with the time change data can be realized in the process of detecting the heating or refrigeration of the sample.
The power module 4 is installed inside the lower box body 101 and located on the right side of the constant-temperature water bath box. The power supply module 4 is connected with the infrared thermal imaging module 3, the data analysis terminal module 6 and the temperature control component 203 through leads to realize power supply. The power module 4 is powered by a lithium battery and has two working modes of AC power frequency power supply and portable DC power supply.
In the invention, a darkroom 9 is designed in order to eliminate the interference of external light to the lens 301 and ensure the accuracy of the detection result. As shown in fig. 6, the darkroom 9 is a cover body with an opening on the top surface, and the size of the cross section of the darkroom is the same as that of the opening on the top surface of the constant temperature water bath 202; meanwhile, the positions of the two opposite side surfaces of the darkroom close to the bottom edge are provided with L-shaped baffles 901, the L-shaped baffles 901 and the side surfaces of the darkroom 9 where the L-shaped baffles 901 are arranged form a U-shaped groove structure together, the U-shaped baffles 901 are used for matching with the top surface of the constant temperature water bath box 202 to complete the installation of the darkroom 9, and the width of the U-shaped groove 901 is equal to the horizontal distance between the two opposite side surfaces of the constant temperature water bath box 202 and the. When the darkroom 9 is installed, the bottom of the darkroom 9 is inserted into the opening on the top surface of the thermostatic water bath 202, and the U-shaped grooves 901 on the two sides of the darkroom 9 are inserted into the parts between the side wall and the opening on the top surface of the thermostatic water bath 202, so that the darkroom 9 and the thermostatic water bath 202 are positioned. The darkroom 9 is further provided with a cylindrical lens sleeve 902 communicated with the interior of the darkroom 9, and the two are screwed and fixed through threads. The inner diameter of the lens sleeve 902 matches the outer diameter of the lens 301 for inserting the lens 301, so that the lens 301 is located inside the darkroom 9, and the lens 301 closes the opening of the lens sleeve 901, and no light is emitted into the darkroom 9, as shown in fig. 7.
In the invention, the upper cover 101 and the lower box body 102 are also provided with accommodating structures, which comprise a heat insulation board accommodating groove position, an object sample stage accommodating groove position, a copper bar accommodating groove position, a temperature control part accommodating groove position and a temperature measurement module accommodating elastic belt which are arranged on the upper cover 101 and are respectively used for accommodating a heat insulation board 204, an object sample stage 5, a copper bar 201, a temperature control part 203 and a temperature measurement module 7. For the taking in of the darkroom 2, firstly, the lens sleeve is screwed off and vertically inserted into the circular groove designed at any vacant position on the bottom surface of the suitcase, and then the darkroom 2 can be directly inverted and then inserted into the thermostatic water bath box from the opening on the top surface of the thermostatic water bath box 2 to finish the taking in of the darkroom 2. Therefore, all the parts can be accommodated in the box body in the using process of the invention, and the transportation of the whole device is convenient.
Claims (10)
1. The utility model provides a portable noble metal interlaminar adulteration nondestructive test device based on infrared thermal imaging technique which characterized in that: the system comprises a suitcase, and an infrared thermal imaging module, a power supply module, a sample objective table, a data analysis terminal module, a temperature measurement module and a data time synchronization function module which are arranged in the suitcase;
the constant-temperature thermal excitation module is used for applying cold excitation or thermal excitation to the sample stage; the infrared thermal imaging module is used for acquiring an infrared thermal imaging image of a detection sample placed on the sample stage; the temperature measuring module is used for measuring temperature data of a detected sample; the data time synchronization function module is used for acquiring image data and temperature data in real time; the data analysis terminal module is used for receiving and displaying the image data and the temperature data; the power supply module is used for supplying power.
2. The portable noble metal interlaminar adulteration nondestructive testing device based on the infrared thermal imaging technology as claimed in claim 1, characterized in that: the suitcase is a flip structure with an upper cover and a lower case body; the middle part in the lower box body is provided with a constant-temperature thermal excitation module, the left part is provided with an infrared thermal imaging module, and the right part is provided with a power supply module; the upper cover is of an inwards concave structure, and a data analysis terminal module is arranged on the inner wall of the upper cover; meanwhile, the upper cover and the lower box body are internally provided with storage structures for storing detachable parts in each part.
3. The portable noble metal interlaminar adulteration nondestructive testing device based on the infrared thermal imaging technology as claimed in claim 1, characterized in that: the constant-temperature thermal excitation module comprises a red copper bar, a constant-temperature water bath box and a temperature control component; the interior of the constant-temperature water bath box is used for containing a cold excitation source or a heat excitation source; the upper part of the constant-temperature water bath box is provided with a heat insulation plate, and the bottom end of the red copper bar passes through the through hole on the partition plate and is fixed with the threaded hole at the bottom surface of the constant-temperature thermal excitation module through threads; the top end of the red copper rod supports the sample objective table.
4. The portable noble metal interlayer adulteration nondestructive testing device based on the infrared thermal imaging technology as claimed in claim 3, characterized in that: the top surface of the heat insulation plate is provided with a through hole for injecting an excitation source into the constant temperature water bath box and installing a temperature control component; the through hole is plugged by a plug designed on the temperature control component.
5. The portable noble metal interlayer adulteration nondestructive testing device based on the infrared thermal imaging technology as claimed in claim 3, characterized in that: one side of the constant temperature water bath box is of a sandwich structure, the inner layer and the outer layer of the side are provided with exhaust ports at opposite positions, the outer wall of the inner layer is attached with a nano film, and a cooling fan is arranged in the sandwich layer.
6. The portable noble metal interlayer adulteration nondestructive testing device based on the infrared thermal imaging technology as claimed in claim 3, characterized in that: also has a darkroom; the darkroom is a cover body with an opening on the top surface and is buckled with the top surface of the constant temperature water bath box; the darkroom is provided with a socket communicated with the interior of the darkroom for being plugged with the infrared thermal imaging module, the socket is closed by the external thermal imaging module, and no light irradiates the darkroom.
7. The portable noble metal interlaminar adulteration nondestructive testing device based on the infrared thermal imaging technology as claimed in claim 1, characterized in that: the infrared thermal imaging module collects an infrared thermal imaging picture of a detection sample by a lens; the focal length of the lens is adjustable and is connected with the image acquisition module; and meanwhile, the lens is supported by the foldable support.
8. The portable noble metal interlaminar adulteration nondestructive testing device based on the infrared thermal imaging technology as claimed in claim 1, characterized in that: the data analysis terminal module is embedded with an image processing algorithm and a standard sample temperature characteristic database, the bottom of the data analysis terminal module is provided with an external I/O port required for exporting data, and the data analysis terminal module is arranged on the upper cover through a foldable support.
9. The portable noble metal interlaminar adulteration nondestructive testing device based on the infrared thermal imaging technology as claimed in claim 1, characterized in that: the temperature measurement module is a clamp holder with a temperature sensor and is used for clamping a sample object stage and recording the surface temperature of a sample on the sample object stage in real time.
10. The portable noble metal interlaminar adulteration nondestructive testing device based on the infrared thermal imaging technology as claimed in claim 1, characterized in that: the data time synchronization function module comprises a LoRa radio frequency chip and a mobile power supply which are embedded in an interlayer of the constant-temperature water bath box; the LoRa radio frequency chip is used for receiving temperature data measured by the temperature measuring module and image data acquired by the infrared thermal imaging module and synchronously sending the temperature data and the image data to the data analysis terminal module.
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