CN112285108B - Portable noble metal interlayer adulteration nondestructive test device based on infrared thermal imaging technology - Google Patents
Portable noble metal interlayer adulteration nondestructive test device based on infrared thermal imaging technology Download PDFInfo
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- CN112285108B CN112285108B CN202011127535.7A CN202011127535A CN112285108B CN 112285108 B CN112285108 B CN 112285108B CN 202011127535 A CN202011127535 A CN 202011127535A CN 112285108 B CN112285108 B CN 112285108B
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- 238000001931 thermography Methods 0.000 title claims abstract description 59
- 229910000510 noble metal Inorganic materials 0.000 title claims abstract description 34
- 239000011229 interlayer Substances 0.000 title claims abstract description 31
- 238000005516 engineering process Methods 0.000 title claims abstract description 26
- 238000012360 testing method Methods 0.000 title claims description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 44
- 230000005284 excitation Effects 0.000 claims abstract description 33
- 238000001514 detection method Methods 0.000 claims abstract description 23
- 238000009659 non-destructive testing Methods 0.000 claims abstract description 16
- 239000010410 layer Substances 0.000 claims abstract description 9
- 238000007405 data analysis Methods 0.000 claims description 27
- 229910052802 copper Inorganic materials 0.000 claims description 24
- 239000010949 copper Substances 0.000 claims description 24
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 23
- 238000009413 insulation Methods 0.000 claims description 15
- QVFWZNCVPCJQOP-UHFFFAOYSA-N chloralodol Chemical compound CC(O)(C)CC(C)OC(O)C(Cl)(Cl)Cl QVFWZNCVPCJQOP-UHFFFAOYSA-N 0.000 claims description 11
- 238000000034 method Methods 0.000 claims description 7
- 238000013461 design Methods 0.000 claims description 6
- 238000001816 cooling Methods 0.000 claims description 5
- 238000009529 body temperature measurement Methods 0.000 claims description 3
- 239000002120 nanofilm Substances 0.000 claims description 3
- 238000012545 processing Methods 0.000 claims description 3
- 238000009434 installation Methods 0.000 claims description 2
- 238000005192 partition Methods 0.000 claims 1
- 239000010970 precious metal Substances 0.000 abstract description 5
- 238000003384 imaging method Methods 0.000 abstract description 3
- 238000004458 analytical method Methods 0.000 abstract description 2
- 230000009286 beneficial effect Effects 0.000 abstract 3
- 238000009835 boiling Methods 0.000 abstract 1
- 239000007769 metal material Substances 0.000 abstract 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 11
- 229910052737 gold Inorganic materials 0.000 description 11
- 239000010931 gold Substances 0.000 description 11
- 238000010586 diagram Methods 0.000 description 8
- 238000010438 heat treatment Methods 0.000 description 6
- 230000001066 destructive effect Effects 0.000 description 5
- 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
- 239000000956 alloy Substances 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 238000001739 density measurement Methods 0.000 description 1
- 238000007667 floating Methods 0.000 description 1
- 238000007689 inspection 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
- 239000000741 silica gel Substances 0.000 description 1
- 229910002027 silica gel Inorganic materials 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000012549 training Methods 0.000 description 1
Classifications
-
- 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 invention is based on the infrared thermal imaging technology, uses constant-temperature boiling water bath as an excitation heat source, adopts the data time synchronization imaging technology, and utilizes the database terminal comparison analysis function to realize the rapid criterion of the adulteration nondestructive detection between noble metal layers. The device can quickly and accurately judge whether the noble metal layer is adulterated or not, does not damage the appearance of the noble metal material, and is convenient to carry and easy to use. The device is suitable for wide noble metal trade market, is beneficial to sellers to effectively carry out nondestructive testing on noble metal devices in time, is beneficial to consumers to effectively reduce self loss, and is beneficial to noble metal industry to improve the integrity in the whole society.
Description
Technical Field
The invention relates to the field of nondestructive testing in the noble metal industry, in particular to a portable noble metal interlayer adulteration nondestructive testing device based on an infrared thermal imaging technology.
Background
Currently, noble metal trading markets in China are 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% in the same ratio; gold bars 285.2 tons, 3.19% increase. However, the problem of the adulteration of national standard gold interlayers in the market is increasingly serious at present, especially the doping of tungsten or iridium elements, and the gold cheating credit and fraudulent consumption phenomena caused by the doping are frequent. The tungsten and iridium have relatively similar physical characteristics with gold, have relatively strong chemical stability, but have relatively large price difference, the average price of gold is 360 yuan/g, the average price of tungsten is 0.28 yuan/g, the average price of iridium is 393 yuan/g, a counterfeiter only needs to mix a large amount of tungsten into the gold strip, and then the alloy strip with extremely low cost can be manufactured by using a small amount of iridium with balanced density, and the huge profit difference becomes the driving force of the counterfeiter.
After the noble metal interlayer is doped, the quality, the appearance and other characteristics of the whole sample are basically consistent with those of pure gold, and common people cannot distinguish true from naked eyes or a physical method, so that huge economic loss is caused for consumers, the gold market is influenced, and the honest crisis emerges. At present, most noble metal detection methods, such as density measurement, burning method, physical bending and other simple means, lack accurate and effective theoretical criteria and are easy to be misled by lawbreakers. The existing scientific precious metal detection mostly needs to re-cast and sample precious metal, the original structure is broken, and the instrument is large, expensive and long and complex to operate. Therefore, finding a device for distinguishing noble metal adulteration more effectively and conveniently is one of the technical problems to be solved urgently at present.
Disclosure of Invention
The invention aims to solve the technical problems and provides a portable noble metal interlayer adulteration nondestructive testing device based on an infrared thermal imaging technology.
The invention discloses a portable noble 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 module, a sample object stage, a data analysis terminal module, a temperature measuring 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 object stage to realize temperature control of the detection sample;
the infrared thermal imaging module is used for acquiring an infrared thermal imaging image of the detection sample placed on the sample stage.
The temperature measuring module is used for measuring temperature data of the detection sample.
The data time synchronization function module is used for acquiring image data and temperature data in real time and synchronously transmitting the image data and the temperature data to the data analysis terminal module.
The data analysis terminal module is used for receiving the image data and the temperature data and displaying the image data and the temperature data.
The power module is used for supplying power.
Meanwhile, the invention also designs 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, the socket is used for being inserted with an infrared thermal imaging module, the socket is closed by the infrared thermal imaging module, and no light irradiates into the darkroom.
The invention has the advantages that:
1. according to the portable noble metal interlayer adulteration nondestructive detection device based on the infrared thermal imaging technology, in the use process, whether a noble metal sample is adulterated or not is imaged synchronously in real time, the accurate and rapid comparison is realized, meanwhile, the operation is simple and convenient, a complicated process is not needed, and the structure of the sample is not damaged;
2. the portable noble metal interlayer adulteration nondestructive detection device based on the infrared thermal imaging technology has the advantages of cold source excitation, high efficiency and stability: the sample machine can be excited by a cold source, so that the difference characteristic of heat conductivity among samples is effectively amplified, and the influence of water vapor on detection is reduced.
3. The invention relates to a novel portable noble metal interlayer adulteration nondestructive testing device based on an infrared thermal imaging technology, which adopts an algorithm and fully learns: the intelligent identification of the thermal imaging diagram is realized through a large amount of data and specific algorithm training.
4. According to the portable precious metal interlayer adulteration nondestructive testing device based on the infrared thermal imaging technology, a standard database infrared thermal imager is constructed according to simulation data, so that a sample can be imaged in real time, a data analysis system receives the sample in real time, analysis and comparison can be performed, and a comparison database constructed by utilizing the result of finite element simulation can be utilized, so that adulterated gold can be rapidly and accurately distinguished.
5. The invention discloses a portable noble metal interlayer adulteration nondestructive testing device based on an infrared thermal imaging technology, which comprises the steps of constructing a darkroom and eliminating interference: and constructing a darkroom and related tools, eliminating interference of external light on the infrared lens, and ensuring the accuracy of a detection result.
6. The portable noble metal interlayer adulteration nondestructive detection device based on the infrared thermal imaging technology is light and convenient in carrying process, convenient in transportation, and capable of being folded, the miniaturized box body and the detachable rod piece are designed to ensure that workers can effectively develop work in real time.
Drawings
FIG. 1 is a schematic diagram of the overall structure of a portable noble metal interlayer adulteration nondestructive testing device based on infrared thermal imaging technology;
FIG. 2 is a schematic diagram of a constant temperature thermal excitation module in a portable device for non-destructive detection of noble metal interlayer adulteration based on infrared thermal imaging technology.
FIG. 3 is a schematic diagram of the design of the vent holes in the thermal excitation module of the present invention.
FIG. 4 is a schematic diagram of an infrared thermal imaging module in a portable device for non-destructive detection of noble metal interlayer adulteration based on infrared thermal imaging technology.
FIG. 5 is a block diagram of a portable device for non-destructive detection of noble metal interlayer adulteration based on infrared thermal imaging technology.
FIG. 6 is a schematic view of a darkroom structure in a portable device for non-destructive detection of noble metal interlayer adulteration based on infrared thermal imaging technology according to the present invention.
FIG. 7 is a schematic diagram showing the connection between the lens and the darkroom in the portable device for non-destructive inspection of noble metal interlayer adulteration based on infrared thermal imaging technology according to the present invention.
In the figure:
1-suitcase 2-constant temperature thermal excitation module 3-infrared thermal imaging module
4-power module 5-sample stage 6-data analysis terminal module
7-temperature measurement module 8-data time synchronization function module 9-darkroom
101-upper cover 102-lower box 201-copper bar
202-constant temperature water bath 203-temperature control part 204-heat insulation board
205-exhaust port 206-nanofilm 207-fan
301-lens 302-lens support box 303-rotation unit
304-adjusting rod A305-adjusting rod B306-base
307-hinge A308-hinge B309-hinge C
601-foldable stand 601 a-connecting plate 601 b-fixing plate
801-radio frequency chip 802-mobile power supply 901-lens socket
Detailed Description
The invention is described in further detail below with reference to the accompanying drawings.
The invention discloses 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 object stage 5, a data analysis terminal module 6, a temperature measuring module 7 and a data time synchronization functional module 8, wherein the temperature measuring module 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 piece to form a flip-type structure. Wherein, the lower box 102 is internally provided with a thermal excitation module 2, an infrared thermal imaging module 3, a power module 4 and a sample object stage 5. 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 component 203. The constant-temperature water bath 202 is a box structure with an opening on the top surface, the cross section of the constant-temperature water bath is rectangular, and the constant-temperature water bath is internally used for containing a cold excitation source or a hot excitation source. The constant temperature water bath 202 is arranged in the middle of the lower box body, and the two opposite sides of the bottom surface are provided with annular lug countersunk structures for being matched with screws to realize the fixation between the constant temperature water bath 202 and the bottom surface of the lower box body 2.
The inner wall of the constant-temperature water bath 202 is provided with a shoulder near the top surface in the circumferential direction, and is used for carrying the heat insulation plate 204, so that the heat insulation plate 204 isolates the interference of water vapor to the infrared thermal imaging module 3 when the excitation source in the constant-temperature water bath is heated or cooled, and the excitation source in the water bath is convenient to replace. Protrusions are designed at the diagonal positions of the top surface of the heat insulation plate 204 for holding, so that the heat insulation plate 204 can be flexibly taken out; and a through hole is formed in the top surface of the heat insulating plate 204 for injecting an excitation source into the thermostatic waterbath 202, and a temperature control part 203 is installed. Four internal thread blind holes are formed in the middle of the bottom surface of the constant-temperature water bath 202, and the centers of the four blind holes are respectively positioned at four corners of a right-angle trapezoid; meanwhile, four through holes corresponding to the positions of the blind holes are formed in the middle of the heat insulating plate 204 and are used for inserting the copper bars 201.
Four copper bars 201 pass through each through hole respectively, the bottom ends are fixedly connected with corresponding blind holes through threads, the four copper bars 201 are fixed, and the four copper bars 201 are placed through the blind holes and the through holes, so that a right trapezoid vertex heat source space layout is formed among the four copper bars 201. The top ends of the four red copper rods 201 are used for supporting a sample object stage 5 made of heat conducting materials (heat conducting silica gel), four blind holes are designed on the bottom surface of the sample object stage 5, the top ends of the four red copper rods 201 are respectively inserted into the four blind holes, fixation between the four red copper rods 201 and the sample object stage 5 is achieved, the red copper rods 201 are fully contacted with the sample object stage 5, a detection sample is arranged from top to bottom, the bearing space of the detection sample is enlarged by the sample object stage 5, and meanwhile, the red copper rods are used as a heat source and heat conducting intermediate piece for the detection sample placed on the sample object stage 5. The arrangement of the copper bars 201 can support the sample stage 5 more stably, and can uniformly heat the sample stage 5 and the sample.
The temperature control part 203 may be a heating rod or a cooling rod, and a block is installed at the end of the heating rod or the cooling rod. The heating rod or the refrigerating rod is inserted into the constant-temperature water bath 202 through the through hole on the heat insulation plate 204, and is inserted into the through hole of the heat insulation plate 204 through the blocking block, so that the through hole is blocked, and the constant-temperature water bath 202 is in a closed environment. The temperature control of the excitation source in the constant temperature water bath 202 is realized through the temperature control part 203.
As shown in fig. 3, a side of the above-mentioned thermostat 202 is a sandwich structure, and the inner layer and the outer layer of the side are provided with four air outlets 205 at opposite positions, and meanwhile, a nano film 206 is attached to the outer wall of the inner layer, and a cooling fan 207 is installed in the sandwich layer, so that when the thermostat is in a thermal excitation mode, water vapor can be discharged from the air outlets 205, on one hand, the water vapor is prevented from floating up to interfere with the detection of the infrared thermal imaging module 3, and on the other hand, the thermostat 202 is prevented from being broken due to the expansion caused by the too high temperature.
Before the constant temperature thermal excitation module 2 starts to work, firstly, the heat insulation plate 204 is buckled on the upper part of the constant temperature water bath 202, the copper bar 201 is inserted into the constant temperature water bath 202 through the through hole on the heat insulation plate 204 and fixed, and at the moment, a proper excitation source can be injected into the constant temperature water bath 202 from the opening on the heat insulation plate 204. Then, the thermal excitation or cold excitation mode is selected according to the requirement, a required heating rod or the 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 plugged by the plug. Finally, the sample stage 5 is arranged at the top end of the copper bar 201, the sample to be detected is placed on the sample stage 5, at the moment, a power supply is turned on, and the heating bar or the refrigerating bar 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 tested, the sample stage 5, the copper rod 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 mounted 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 round 9.5mm lens, and is used for shooting an infrared thermal imaging image of the 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 focusing function, and the lens 301 can extend or retract from the lens supporting box and the lens 301 can rotate automatically through the rotating unit 303, so that the alignment focal length of the lens 301 can be adjusted, the imaging resolution is not higher than 0.5 ℃, and the temperature testing range is-20-100 ℃. An image acquisition module is also installed inside the lens support case 302 for acquiring an infrared thermal imaging image photographed by the lens. The end 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 the two adjusting rods B305 through a hinge B308 with adjustable tightness on the inner side of the top ends of the two adjusting rods B305. The bottom ends of the two adjusting rods B305 are arranged on two sides of the joint at the top of the base 306 through hinges C309 which are adjustable in tightness and have horizontal freedom degrees. The base 306 is fixedly mounted on the left front bottom surface of the lower case. Thus, the adjusting rod A304, the adjusting rod B305 and the hinges form a rod-shaped supporting structure with adjustable posture, so that the posture of the lens 301 is adjusted. Through the above structural design, the two adjusting rods A304 can be rotated to be retracted between the two adjusting rods B307, so that the infrared thermal imaging module 3 forms a foldable infrared thermal imaging module 3, and the folded infrared thermal imaging module 3 is integrally positioned at the left side inside the lower box body 2 for storage. A data acquisition module is further installed in the lens support case 302, and is used for acquiring an infrared thermal imaging 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 detection results, an internal circuit board with an integrated operation pivot for realizing the function of the data analysis terminal module, an external output interface end and a built-in power supply; meanwhile, the data analysis terminal module 6 is embedded with an image processing algorithm and a standard sample temperature characteristic database, and the bottom is provided with an external I/O port required by data export, 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 by a foldable stand 601, the foldable stand 601 including a connection plate 601a and a fixing plate 601b. Wherein, fixed plate 601b passes through screw fixed mounting in upper cover 101 inner wall, and the connecting plate 601a bottom passes through hinge pin connection with fixed plate 601b side, and the connecting plate 601a top passes through hinge pin and articulates between the articulated plane of data analysis terminal module 6 rear side design, and hinge pin all along upper cover 101 left and right directions, makes data analysis terminal module 6 can realize freely and smoothly rotatory and folding from this. The connection plate 601a is hinged with the fixing plate 601b by a section of limit inclined plane, so that after the connection plate 601a is unfolded, the connection plate 601a is contacted with the upper cover 101 through the limit inclined plane, the rotation limit of the connection plate 601a is realized, and the connection plate 601a and the fixing plate 601b are unfolded at 145 degrees.
The temperature measuring module 7 is a holder with a temperature sensor and is used for clamping the sample stage 5 and recording the surface temperature of the sample on the sample stage 5 in real time.
The data time synchronization functional module 8 comprises a LoRa radio frequency chip 801 and a 3.8V mobile power supply 802 (such as a charger) which are embedded in an interlayer at the rear side of the constant temperature water bath 202, and an openable cover body is designed at the side surface of the interlayer for taking out and charging the mobile power supply 802. As shown in fig. 5, the power interface of the LoRa rf chip 801 is connected to the 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 into a data input pin (RXD), a high-level pin (VCC) and a ground pin (GND) of the LoRa radio frequency chip 801 through wires; 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 radio frequency chip 801 also realizes real-time data transmission through a wireless communication protocol and the data analysis terminal module 6.
The LoRa radio frequency chip is used for receiving temperature data measured by the temperature measuring module 7 and synchronously transmitting image data acquired by the data acquisition module to the data analysis terminal module 6; further processing by the data analysis terminal module 6, and then imaging 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 the true and false criterion result is given on the display screen. Therefore, through the data time synchronization function module 8, real-time monitoring of time-varying data of the sample temperature and the infrared thermal imaging diagram can be realized in the process of detecting whether the sample is heated or cooled.
The power module 4 is installed inside the lower box body 101 and is positioned on the right side of the constant-temperature water bath box. The power module 4 is connected with the infrared thermal imaging module 3, the data analysis terminal module 6 and the temperature control part 203 through wires 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, in order to eliminate the interference of external light on the lens 301 and ensure the accuracy of the detection result, a darkroom 9 is designed. As shown in fig. 6, the darkroom 9 is a cover body with an opening on the top surface, and the cross section size of the cover body is the same as the opening size on the top surface of the constant temperature water bath 202; meanwhile, L-shaped baffles 901 are designed at positions, close to the bottom edges, of the two opposite side surfaces of the darkroom, and the L-shaped baffles 901 and the side surfaces of the darkroom 9 where the L-shaped baffles are positioned together form a U-shaped groove structure, so that the U-shaped baffles are matched with the top surface of the thermostatic waterbath 202 to finish 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 thermostatic waterbath 202 and the opening of the thermostatic waterbath 202. When the darkroom 9 is installed, the bottom of the darkroom 9 is inserted into the opening of the top surface of the constant-temperature water bath 202, and meanwhile, the U-shaped grooves 901 at two sides of the darkroom 9 are inserted into the part between the side wall of the constant-temperature water bath 202 and the opening of the top surface, so that the darkroom 9 and the constant-temperature water bath 202 are positioned. The camera 9 is also provided with a cylindrical lens sleeve 902 communicated with the inside of the camera 9, and the cylindrical lens sleeve 902 and the camera are screwed and fixed through threads. The inner diameter of the lens sleeve 902 is matched with the outer diameter of the lens 301 for inserting the lens 301 so that the lens 301 is positioned inside the darkroom 9, and the opening of the lens sleeve 901 is closed by the lens 301, and no light is irradiated into the darkroom 9, as shown in fig. 7.
In the invention, the upper cover 101 and the lower box 102 are also provided with accommodating structures, which comprise an insulating board accommodating groove, a carrying sample table accommodating groove, a copper bar accommodating groove, a temperature control part accommodating groove and a temperature measuring module accommodating elastic belt which are arranged on the upper cover 101, and are respectively used for accommodating the insulating board 204, the carrying sample table 5, the copper bar 201, the temperature control part 203 and the temperature measuring module 7. For the storage of the darkroom 2, firstly, the lens sleeve is screwed off and vertically inserted into the annular groove designed at any vacancy of the bottom surface of the suitcase, then the darkroom 2 can be directly inverted and then inserted into the thermostatic water bath through the opening of the top surface of the thermostatic water bath 2, and the storage of the darkroom 2 is completed. Therefore, all parts can be accommodated in the box body in the using process of the invention, and the whole device is convenient to transport.
Claims (6)
1. A portable noble metal interlayer adulteration nondestructive test device based on infrared thermal imaging technique, its characterized in that: the device comprises a suitcase, an infrared thermal imaging module, a power module, a sample object stage, a data analysis terminal module, a temperature measuring module and a data time synchronization function module, wherein the infrared thermal imaging module, the power module, the sample object stage, the data analysis terminal module, the temperature measuring module and the data time synchronization function module are arranged in the suitcase;
the constant temperature thermal excitation module is used for applying cold excitation or thermal excitation to the sample object stage; the constant temperature thermal excitation module comprises a copper bar, a constant temperature water bath box and a temperature control part; wherein the inside of the constant temperature water bath box is used for containing a cold excitation source or a hot 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 rod passes through the perforation on the partition plate and is fixed with a threaded hole on the bottom surface of the constant-temperature water bath box in a threaded manner; the top end of the red copper rod supports a sample objective table;
the infrared thermal imaging module is used for acquiring an infrared thermal imaging image of the detection sample placed on the sample object stage; the temperature measuring module is used for measuring temperature data of a detection 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 the image data and the temperature data and displaying the image data and the temperature data; the power supply module is used for supplying power;
the suitcase is of 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 a concave structure, and a data analysis terminal module is arranged on the inner wall; meanwhile, the upper cover and the lower box body are internally provided with storage structures for storing the detachable parts in each part;
the infrared thermal imaging module comprises a lens, a lens supporting box, a rotating unit, an adjusting rod A, an adjusting rod B and a base; the periphery of the lens is arranged on the front end face of the lens supporting box through a rotating unit with focusing function; the tail end of the lens supporting box is provided with a mounting joint, the mounting joint is mounted at the top ends of the two adjusting rods A through a hinge A with adjustable elasticity, and the bottom ends of the two adjusting rods A are connected with the top ends of the two adjusting rods B through a hinge B with adjustable elasticity; the bottom ends of the two adjusting rods B are arranged at two sides of a joint at the top of the base through hinges C which are adjustable in tightness and have horizontal freedom degrees; the base is fixedly arranged on the front bottom surface of the left side of the lower box body; therefore, the adjusting rod A, the adjusting rod B and the hinges form a rod-shaped supporting structure with adjustable posture, so that the posture of the lens is adjusted; the two adjusting rods A can be rotated to be retracted between the two adjusting rods B, so that the infrared thermal imaging module forms a foldable infrared thermal imaging module, and the folded infrared thermal imaging module is integrally positioned at the left side in the lower box body for being retracted; the lens support box is internally provided with a data acquisition module which is used for acquiring an infrared thermal imaging image shot by the lens;
the data analysis terminal module is arranged on the upper cover through a foldable bracket, and the foldable bracket comprises a connecting plate and a fixing plate; the fixed plate is fixedly arranged on the inner wall of the upper cover through screws, the bottom end of the connecting plate is connected with the side edge of the fixed plate through a hinge pin, the top end of the connecting plate is hinged with a hinge surface designed on the rear side of the data analysis terminal module through the hinge pin, and the hinge pins are all along the left-right direction of the upper cover, so that the data analysis terminal module can freely and smoothly rotate and fold; the connecting plate is hinged with the fixed plate for a section of design with a limiting inclined plane, so that after the connecting plate is unfolded, the limiting inclined plane contacts with the upper cover to limit the rotation of the connecting plate, and the connecting plate and the fixed plate are unfolded at 145 degrees;
the data time synchronization functional module comprises a LoRa radio frequency chip and a 3.8V mobile power supply which are embedded in an interlayer at the rear side of the constant-temperature water bath box, and an openable cover body is designed on the side surface of the interlayer for taking out and charging the mobile power supply; the power interface of the LoRa radio frequency chip is connected with the output interface of the 3.8V mobile power supply, and the 3.8V mobile power supply supplies power for the LoRa;
the power module is arranged in the lower box body and is positioned on the right side of the constant-temperature water bath box;
the darkroom is a cover body with an opening on the top surface, and the cross section size of the darkroom is the same as the size of the opening on the top surface of the constant-temperature water bath box; meanwhile, L-shaped baffles are designed at positions, close to the bottom edges, of the two opposite side surfaces of the darkroom, and a U-shaped groove structure is formed between the L-shaped baffles and the side surface of the darkroom where the L-shaped baffles are positioned and is used for being matched with the top surface of the thermostatic waterbath to finish the installation of the darkroom, and the width of each U-shaped groove is equal to the horizontal distance between the two opposite outer side walls of the thermostatic waterbath and the opening of the top surface of the thermostatic waterbath; when the darkroom is installed, the bottom of the darkroom is inserted into the opening of the top surface of the constant-temperature water bath box, and simultaneously, the U-shaped grooves on the two sides of the darkroom are inserted into the part between the outer side wall of the constant-temperature water bath box and the opening of the top surface, so that the darkroom and the constant-temperature water bath box are positioned; the camera is also provided with a cylindrical structure lens sleeve communicated with the interior of the camera, and the cylindrical structure lens sleeve and the camera are screwed and fixed through threads; the inner diameter of the lens sleeve is matched with the outer diameter of the lens, the lens is used for being inserted into the camera so as to enable the lens to be positioned in the darkroom, the opening of the lens sleeve is closed by the lens, and no light irradiates into the darkroom; for the storage of the darkroom, firstly, the lens sleeve is screwed off and vertically inserted into a circular groove designed at any vacancy of the bottom surface of the suitcase, then the darkroom can be directly inverted and then inserted into the thermostatic waterbath box through the opening of the top surface of the thermostatic waterbath box, and the storage of the darkroom is completed;
the box upper cover has designed in with lower box and has accomodate the structure, accomodates the trench, the red copper bar is accomodate the trench, temperature control part accomodates the trench, temperature measurement module including the heat insulating board that designs on the upper cover, carries thing sample platform, red copper bar, temperature control part and temperature measurement module are accomodate the elastic webbing, are used for accomodating heat insulating board, year thing sample platform, red copper bar respectively.
2. The infrared thermal imaging technology-based portable noble metal interlayer adulteration nondestructive testing device as claimed in claim 1, wherein: 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; and plugging the through hole by a plug designed on the temperature control part.
3. The infrared thermal imaging technology-based portable noble metal interlayer adulteration nondestructive testing device as claimed in claim 1, wherein: one side of the constant temperature water bath box is of a sandwich structure, an exhaust port is formed in the opposite position of the inner layer and the outer layer of the side, a nano film is attached to the outer wall of the inner layer, and a cooling fan is arranged in the sandwich.
4. The infrared thermal imaging technology-based portable noble metal interlayer adulteration nondestructive testing device as claimed in claim 1, wherein: the data analysis terminal module is embedded with an image processing algorithm and a standard sample temperature characteristic database, and the bottom is provided with an external I/O port required by data export.
5. The infrared thermal imaging technology-based portable noble metal interlayer adulteration nondestructive testing device as claimed in claim 1, wherein: the temperature measuring module is a clamp holder with a temperature sensor and is used for clamping the sample object stage and recording the surface temperature of the sample on the sample object stage in real time.
6. The infrared thermal imaging technology-based portable noble metal interlayer adulteration nondestructive testing device as claimed in claim 1, wherein: 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 transmitting the temperature data and the image data to the data analysis terminal module.
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