Positioning distributed particle coating density automatic measurement system and method

Abstract

The invention relates to a positioning distributed particle coating density automatic measurement system and method, and the system comprises a weighing module which is used for adding different particles into a first stock bin and a second stock bin and weighing the particles; the push rod mechanism is used for laterally lifting the stock bin, two paths of particles flow into the particle dispersing and feeding mechanism, single particle positioning and uniform dispersing are performed through two positioning dispersing and feeding turntables of the particle dispersing and feeding mechanism, then the particles are fed into the counting module, two paths of photoelectric signals are generated through two measuring lines in the counting module, and two paths of particle images are obtained through the image acquisition and analysis system; two paths of diameter data are obtained, and coating density data of two paths of particles are obtained through analysis and calculation in combination with weighing data and the number of the particles; and the control system controls the weighing module, the push rod mechanism, the particle dispersing and feeding mechanism, the counting module and the image acquisition and analysis system to start and stop, and displays and stores data. Therefore, the method has the advantages of single particle positioning, uniform dispersion, large sample amount, high measurement efficiency, nondestructive detection, easy sample recovery and the like.

Description

Technical Field

[0001] This application relates to the technical field of microsphere measurement, and particularly to a positioning and decentralized particle coating density automatic measurement system and method. Background Art

[0002] The structure of the spherical fuel element used in the pebble bed high-temperature gas-cooled reactor is that spherical coated particles are dispersed in the graphite matrix of the fuel zone; the core of the coated particle is a ceramic microsphere particle, and three pyrolytic carbon layers and one silicon carbide layer are thermally deposited on the particle. The main functions are to store fission gases, block the release of gaseous and solid fission products, and maintain the integrity of the coated particle. The coated particle is a key component of the high-temperature reactor fuel element, and the coating thickness and density of the coated particle must be strictly controlled during fuel element production.

[0003] In related technologies, there are mainly the following methods for measuring the density of the loose pyrolytic carbon layer of coated particles: (1) single-sphere mass-size method, which calculates the density of the loose pyrolytic carbon layer by measuring the mass and size of the coated particle, but requires particle shelling, with cumbersome operations and a small sample size; (2) mercury intrusion method, which indirectly calculates the density of the loose pyrolytic carbon layer by measuring the volume of mercury injected into the pores of the coated particle. The measurement efficiency is relatively high, and there are no special requirements for the sample shape, but mercury is toxic and sample recovery is difficult; (3) microscope measurement metallographic method, which obtains the sample size by measuring and collecting metallographic images, but the preparation of metallographic samples takes a long time and the measurement efficiency is low.

[0004] However, the measurement methods in related technologies are limited by problems such as small sample size, low measurement efficiency, destructive testing, and difficult sample recovery, and urgently need to be solved in large-scale production. Summary of the Invention

[0005] This application provides a positioning and decentralized particle coating density automatic measurement system and method to solve problems such as small sample size, low measurement efficiency, destructive testing, and difficult sample recovery in related technologies, and has the advantages of single-particle positioning, uniform dispersion, large sample size, high measurement efficiency, non-destructive testing, and easy sample recovery.

[0006] In the first aspect of the embodiments of this application, a positioning and decentralized particle coating density automatic measurement system is provided, including: a weighing module, a push rod mechanism, a particle dispersion feeding mechanism, a counting module, an image acquisition and analysis system, and a control system, where

[0007] The weighing module includes a first weighing device and a second weighing device. The first weighing device includes a first weighing sensor and a first bin, and the second weighing device includes a second weighing sensor and a second bin. Wherein, both sides of the first bin and the second bin are provided with bin support rods. The first bin is filled with first particles to be measured, and the second bin is filled with second particles to be measured. The weight of the particles in the first bin is read by the first weighing sensor, and the weight of the particles in the second bin is read by the second weighing sensor;

[0008] The push rod mechanism includes a first push rod assembly and a second push rod assembly. The first push rod assembly is used to laterally lift the first bin through the bin support rods on both sides of the first bin, and the second push rod assembly is used to laterally lift the second bin through the bin support rods on both sides of the second bin, so that the first particles to be measured and the second particles to be measured flow into the particle dispersion feeding mechanism;

[0009] The particle dispersion feeding mechanism includes a first positioning dispersion feeding turntable, a second positioning dispersion feeding turntable, a first diversion V-shaped chute and a second diversion V-shaped chute. Wherein, the first positioning dispersion feeding turntable and the second positioning dispersion feeding turntable are both evenly distributed with a plurality of positioning dispersion grooves along the outer peripheral surface. When the first positioning dispersion feeding turntable rotates, the first particles to be measured are respectively embedded into the plurality of positioning dispersion grooves of the first positioning dispersion feeding turntable, and at the material discharge outlet, they fall in a single queue through the first diversion V-shaped chute to the first measurement line of the counting module; when the second positioning dispersion feeding turntable rotates, the second particles to be measured are respectively embedded into the plurality of positioning dispersion grooves of the second positioning dispersion feeding turntable, and at the material discharge outlet, they fall in a single queue through the second diversion V-shaped chute to the second measurement line of the counting module;

[0010] The counting module is used to generate a first photoelectric signal when detecting the falling action of the first particles to be measured dispersed through the first measurement line, and perform a first counting action to obtain the number of particles in the first line. When detecting the falling action of the second particles to be measured dispersed through the second measurement line, it generates a second photoelectric signal and performs a second counting action to obtain the number of particles in the second line;

[0011] The image acquisition and analysis system is used to collect the image of the first particles to be measured based on the first photoelectric signal, and at the same time collect the image of the second particles to be measured based on the second photoelectric signal. The coating density data of the first particles to be measured is obtained according to the diameter data obtained from the image of the first particles to be measured, the weight and the number of particles in the first bin, and the coating density data of the second particles to be measured is obtained according to the diameter data obtained from the image of the second particles to be measured, the weight and the number of particles in the second bin;

[0012] The control system is used to perform start control and stop control on the weighing module, the push rod mechanism, the particle dispersion feeding mechanism, the counting module, the image acquisition module, and the image analysis and calculation module according to the received control signal, and display and store the weight of the first bin, the weight of the second bin, the first count, the second count, the image and diameter data of the first measured particles, the image and diameter data of the second measured particles, the coating density data of the first measured particles, and the coating density data of the second measured particles.

[0013] Optionally, the weighing module further includes:

[0014] The first bin base and the second bin base, the first bin base is connected to the first weighing sensor, and the second bin base is connected to the second weighing sensor.

[0015] Optionally, both the first bin and the second bin adopt side-opening funnels.

[0016] Optionally, the first push rod assembly is fixedly connected to the first bin base through a rotational connection, and the second push rod assembly is fixedly connected to the second bin base through a rotational connection.

[0017] Optionally, the particle dispersion feeding mechanism further includes: a first sample injection container, a second sample injection container, a first stepping motor, and a second stepping motor, where

[0018] The upper end of the first sample injection container is docked with the first bin, and the lower end of the first sample injection container is connected to the first positioning dispersion feeding turntable;

[0019] The upper end of the second sample injection container is docked with the second bin, and the lower end of the second sample injection container is connected to the second positioning dispersion feeding turntable;

[0020] The first stepping motor is used to drive the first positioning dispersion feeding turntable to rotate;

[0021] The second stepping motor is used to drive the second positioning dispersion feeding turntable to rotate.

[0022] Optionally, the image acquisition and analysis system includes: a first image acquisition module, a second image acquisition module, and an image analysis and calculation module, where

[0023] The first image acquisition module is used to acquire the image of the first measured particles based on the first optoelectronic signal;

[0024] The second image acquisition module is configured to acquire an image of the second particulate matter to be measured based on the second optoelectronic signal;

[0025] The image analysis and calculation module is configured to perform edge detection on the image of the first particulate matter to be measured, and obtain a final binary image corresponding to the image of the first particulate matter to be measured through morphological processing, and obtain the coating density data result of the first particulate matter to be measured based on the diameter data obtained from the final binary image corresponding to the image of the first particulate matter to be measured, the weight of the first bin, and the number of particles; and perform edge detection on the image of the second particulate matter to be measured, and obtain a final binary image corresponding to the image of the second particulate matter to be measured through morphological processing, and obtain the coating density data result of the second particulate matter to be measured based on the diameter data obtained from the final binary image corresponding to the image of the second particulate matter to be measured, the weight of the second bin, and the number of particles.

[0026] Optionally, the positioning and decentralized particulate coating density automatic measurement system further includes:

[0027] A first parallel light source and a second parallel light source for generating light. Among them, the first parallel light source generates an image of the first particulate matter to be measured after passing through the first particulate matter to be measured, and the second parallel light source generates an image of the second particulate matter to be measured after passing through the second particulate matter to be measured;

[0028] A first sample window and a second sample window. The first sample window is located between the first parallel light source and the first image acquisition module, and the second sample window is located between the second parallel light source and the second image acquisition module;

[0029] A particulate collection device, which includes a sealed first blanking bin and a second blanking bin. The first blanking bin is located directly below the first sample window and is used to collect the falling first particulate matter to be measured after being hermetically connected to the bottom end of the first sample window; the second blanking bin is located directly below the second sample window and is used to collect the falling second particulate matter to be measured after being hermetically connected to the bottom end of the second sample window. Among them, after the first blanking drawer is placed with the first blanking bin, the first blanking bin is controlled to rise by a first mechanical switch and is hermetically connected to the bottom end of the first sample window; after the second blanking drawer is placed with the second blanking bin, the second blanking bin is controlled to rise by a second mechanical switch and is hermetically connected to the bottom end of the second sample window. After the particulate layer density measurement is completed, the first blanking drawer is controlled to descend, and the first blanking drawer is extracted for replacing the particulate sample, and the second blanking drawer is controlled to descend, and the second blanking drawer is extracted for replacing the particulate sample.

[0030] Optionally, the materials of the first blanking drawer and the second blanking drawer are both resin or polytetrafluoroethylene.

[0031] Optionally, the first particle to be measured and the second particle to be measured are at least one of ceramic particles, metal particles, cermet composite coating particles, plastic microspheres, zirconium balls, UO2 cores, UCO cores, and UN cores.

[0032] An embodiment of the second aspect of the present application provides a positioning and decentralized particle coating density automatic measurement method, which uses the positioning and decentralized particle coating density automatic measurement system described in any one of the above, and includes the following steps:

[0033] Judge whether a measurement instruction is received;

[0034] If the measurement instruction is received, when adding the first particle to be measured to the first bin and / or adding the second particle to be measured to the second bin, read the weight of the particles in the first bin through the first weighing sensor, and read the weight of the particles in the second bin through the second weighing sensor. Then, use the push rod mechanism to lift the first bin and the second bin laterally respectively, so that the first particle to be measured and the second particle to be measured flow into the particle dispersion feeding mechanism;

[0035] Control the operation of the first stepping motor, disperse the first particle to be measured, count it through the first counting module, and then send it to the first image acquisition module. Control the operation of the second stepping motor, disperse the second particle to be measured, count it through the first counting module, and then send it to the second image acquisition module;

[0036] Collect the image of the first particle to be measured generated after the first parallel light source passes through the first particle to be measured, and collect the image of the second particle to be measured generated after the second parallel light source passes through the second particle to be measured;

[0037] Obtain the coating density data of the first particle to be measured based on the diameter data obtained from the image of the first particle to be measured, the weight of the particles in the first bin, and the number of particles. Obtain the coating density data of the second particle to be measured based on the diameter data obtained from the image of the second particle to be measured, the weight of the particles in the second bin, and the number of particles.

[0038] Accordingly, different particles are added to the first bin and the second bin of the weighing module respectively; the push rod mechanism lifts the bin laterally, and the two-way particles flow into the particle dispersion feeding mechanism. The two positioning and dispersing feeding turntables of this mechanism perform single-particle positioning and uniform dispersion on the two-way particles and then send them into the counting module. Two photoelectric signals are generated through two measurement lines in the counting module. The image acquisition and analysis system obtains two-way particle images based on the two photoelectric signals, acquires two-way diameter data, and combines the weighing data and the analysis and calculation of the number of particles to obtain the coating density data results of the two-way particles; the control system controls the start and stop of the weighing module, the push rod mechanism, the particle dispersion feeding mechanism, the counting module, the image acquisition module, and the image analysis and calculation module, and displays and stores relevant data. Accordingly, it has the advantages of single-particle positioning, uniform dispersion, large sample volume, high measurement efficiency, non-destructive detection, and easy sample recovery.

[0039] Additional aspects and advantages of the present application will be given in part in the following description, become apparent in part from the following description, or be learned through the practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] The above and / or additional aspects and advantages of the present application will become apparent and easy to understand from the following description of the embodiments in conjunction with the drawings, where:

[0041] Figure 1 FIG. is a block diagram of a positioning and dispersing type automatic particle coating density measurement system according to an embodiment of the present application;

[0042] Figure 2 FIG. is a structural diagram of a positioning and dispersing type automatic particle coating density measurement system according to an embodiment of the present application;

[0043] Figure 3 FIG. is a schematic diagram of a particle dispersion sampling mechanism and a counting module of a positioning and dispersing type automatic particle coating density measurement system according to an embodiment of the present application;

[0044] Figure 4 FIG. is a side view schematic diagram of a positioning and dispersing feeding turntable of a positioning and dispersing type automatic particle coating density measurement system according to an embodiment of the present application;

[0045] Figure 5 FIG. is a flowchart of a measurement method involved in a positioning and dispersing type automatic particle coating density measurement system according to an embodiment of the present application;

[0046] Figure 6 FIG. is a flowchart of a positioning and dispersing type automatic particle coating density measurement method according to an embodiment of the present application. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0047] Embodiments of the present application will be described in detail below. Examples of the embodiments are shown in the accompanying drawings, where like or similar reference numerals denote like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the accompanying drawings are exemplary and are intended to explain the present application, and should not be construed as a limitation to the present application.

[0048] The positioning and decentralized particle coating density automatic measurement system and method according to embodiments of the present application will be described below with reference to the accompanying drawings. Aiming at the problems in the related art mentioned in the above background art that a large number of particle samples cannot be processed quickly and it is difficult to recycle the damaged samples, the present application provides a positioning and decentralized particle coating density automatic measurement system. Among them, different particles are added to the first bin and the second bin of the weighing module; the push rod mechanism lifts the bin laterally, and the two-way particles flow into the particle dispersion feeding mechanism. The two positioning and decentralized feeding turntables of this mechanism perform single-particle positioning and uniform dispersion on the two-way particles and then send them to the counting module. Two photoelectric signals are generated through two measurement lines in the counting module. The image acquisition and analysis system obtains two-way particle images according to the two photoelectric signals, obtains two-way diameter data, and combines the weighing data and the particle number analysis to calculate the coating density data results of the two-way particles; the control system controls the start and stop of the weighing module, the push rod mechanism, the particle dispersion feeding mechanism, the counting module, the image acquisition module, and the image analysis and calculation module, and displays and stores relevant data. Therefore, it has the advantages of single-particle positioning, uniform dispersion, large sample size, high measurement efficiency, non-destructive testing, and easy sample recovery.

[0049] Specifically, Figure 1 FIG. is a schematic diagram of a positioning and decentralized particle coating density automatic measurement system 10 provided by an embodiment of the present application.

[0050] As Figure 1 shown, the positioning and decentralized particle coating density automatic measurement system 10 includes: a weighing module 100, a push rod mechanism 200, a particle dispersion feeding mechanism 300, a counting module 400, an image acquisition and analysis system 500, and a control system 1000.

[0051] Among them, as Figure 2 shown, the weighing module 100 includes a first weighing device and a second weighing device. The first weighing device includes a first weighing sensor and a first bin, and the second weighing device includes a second weighing sensor and a second bin. Among them, both sides of the first bin and the second bin are provided with bin support rods. The first bin is filled with first particles to be measured, and the second bin is filled with second particles to be measured. The weight of the particles in the first bin is read by the first weighing sensor, and the weight of the particles in the second bin is read by the second weighing sensor;

[0052] The push rod mechanism 200 includes a first push rod assembly and a second push rod assembly. The first push rod assembly is used to laterally lift the first bin through the bin support rods on both sides of the first bin, and the second push rod assembly is used to laterally lift the second bin through the bin support rods on both sides of the second bin, so that the first to-be-measured particles and the second to-be-measured particles flow into the particle dispersion feeding mechanism 300;

[0053] The particle dispersion feeding mechanism 300 includes a first positioning dispersion feeding turntable, a second positioning dispersion feeding turntable, a first diversion V-shaped chute and a second diversion V-shaped chute. Among them, the first positioning dispersion feeding turntable and the second positioning dispersion feeding turntable are both evenly distributed with a plurality of positioning dispersion grooves on the outer peripheral surface. When the first positioning dispersion feeding turntable rotates, the first to-be-measured particles are respectively embedded into the plurality of positioning dispersion grooves of the first positioning dispersion feeding turntable, and at the blanking outlet, they fall in a single queue through the first diversion V-shaped chute to the first measurement line of the counting module 400; when the second positioning dispersion feeding turntable rotates, the second to-be-measured particles are respectively embedded into the plurality of positioning dispersion grooves of the second positioning dispersion feeding turntable, and at the blanking outlet, they fall in a single queue through the second diversion V-shaped chute to the second measurement line of the counting module 400;

[0054] The counting module 400 is used to generate a first optoelectronic signal when detecting the falling action of the first to-be-measured particles after dispersion through the first measurement line, and perform a first counting action to obtain the number of particles in the first line. When detecting the falling action of the second to-be-measured particles after dispersion through the second measurement line, it generates a second optoelectronic signal and performs a second counting action to obtain the number of particles in the second line;

[0055] The image acquisition and analysis system 500 is used to collect the images of the first to-be-measured particles based on the first optoelectronic signal, and at the same time collect the images of the second to-be-measured particles based on the second optoelectronic signal. According to the diameter data obtained from the images of the first to-be-measured particles and the weight and number of particles in the first bin, the coating density data of the first to-be-measured particles is obtained, and according to the diameter data obtained from the images of the second to-be-measured particles and the weight and number of particles in the second bin, the coating density data of the second to-be-measured particles is obtained;

[0056] The control system 1000 is used to perform start control and stop control on the weighing module 100, the push rod mechanism 200, the particle dispersion feeding mechanism 300, the counting module 400, the image acquisition module, and the image analysis and calculation module according to the received control signal, and display and store the weight of the first bin, the weight of the second bin, the first count, the second count, the image and diameter data of the first to-be-measured particles, the image and diameter data of the second to-be-measured particles, the coating density data of the first to-be-measured particles, and the coating density data of the second to-be-measured particles.

[0057] Optionally, in some embodiments, the weighing module 100 further includes: a first bin base and a second bin base, the first bin base is connected to the first weighing sensor, and the second bin base is connected to the second weighing sensor.

[0058] It can be understood that the weighing sensor range ≥ 120g, the accuracy ≤ 0.1mg, the dynamic stability time ≤ 1s. The high precision of the weighing sensor ensures the accuracy of the measurement; the weighing module 100 is a dual-channel structure, using two weighing sensors, corresponding to the two push rod assemblies of the push rod mechanism respectively. The first weighing sensor corresponds to the first push rod assembly, and the second weighing sensor corresponds to the second push rod assembly; two different kinds of particles can be measured simultaneously, improving the work efficiency; when the user is ready to start a new measurement task, the weighing module prompts the user to confirm whether they are ready to start, usually by providing a clear indication or message box through the software interface to ensure that the user is ready. Before adding the sample, the user needs to perform a zeroing operation on the weighing module 100 to eliminate any possible error sources, by clicking the "Zero" button or similar instruction on the software interface to adjust the reading of the weighing sensor to zero; after zeroing, the user adds the first measured particle and the second measured particle to be measured into the first bin and the second bin respectively; after the feeding is completed, the user performs the corresponding confirmation operation. After receiving the confirmation information from the user, the control system 1000 will activate the push rod mechanism, and the push rod mechanism 200 will lift the bin laterally, so that the particles can smoothly flow into the particle dispersion feeding mechanism 300. The design of the bin base ensures the stability of the bin and the reliability of the measurement.

[0059] It should be noted that the first weighing sensor and the second weighing sensor are fixed on a bracket independent of the instrument main body and have no contact with the instrument main body to ensure the accuracy of the test data of this unit module. After weighing, the two-channel data is transmitted to the host through RS232.

[0060] Optionally, in some embodiments, both the first bin and the second bin adopt laterally opening funnels.

[0061] Optionally, in some embodiments, the first push rod assembly is fixedly connected to the first bin base through a rotational connection, and the second push rod assembly is fixedly connected to the second bin base through a rotational connection.

[0062] It can be understood that the precise control of the push rod motor ensures the angle and speed of the bin lifting, avoiding the sudden dumping of particles; the design of the bin support rod makes the bin lifting process smooth, avoiding particle splashing or clogging; after the bin is lifted, the particles can smoothly flow into the particle dispersion feeding mechanism 300, avoiding particle residue.

[0063] Optionally, in some embodiments, the particle dispersion feeding mechanism 300 includes: a first sample injection container, a second sample injection container, a first stepping motor, and a second stepping motor. Among them, the upper end of the first sample injection container is docked with the first bin, and the lower end of the first sample injection container is connected to the first positioning dispersion feeding turntable; the upper end of the second sample injection container is docked with the second bin, and the lower end of the second sample injection container is connected to the second positioning dispersion feeding turntable; the first stepping motor is used to drive the first positioning dispersion feeding turntable to rotate; the second stepping motor is used to drive the second positioning dispersion feeding turntable to rotate.

[0064] It can be understood that, as Figure 3 and Figure 4 shown, the first sample injection container and the second sample injection container adopt an inner inclined design. The multiple positioning dispersion grooves on the positioning dispersion feeding turntable ensure the uniform dispersion of each particle, avoiding the aggregation and blockage of particles. For different types of coating particles (100 - 2000 μm), the outer peripheral groove aperture of the feeding turntable is designed with multiple sizes to ensure no sample jamming and no residue. For example, for samples with a particle size range of D1 - D2 μm, a turntable with a D μm aperture can be used (D1 ≤ D2 ≤ 1.5D1, D2 + 50 ≤ D ≤ D2 + 100); the shape of the positioning dispersion groove can be designed as circular, square, or other geometric shapes according to actual needs. The choice of different shapes mainly depends on the specific characteristics of the particles to be measured (such as size, shape, etc.) and the requirements for the particle dispersion effect; regardless of the shape adopted, the design of each groove must ensure that only one particle to be measured can be accommodated; this design is to ensure that the particles can be processed one by one during the measurement process, avoiding inaccurate or confusing data caused by multiple particles entering simultaneously. The design of the guiding V-shaped chute ensures the smooth transportation of particles and improves the operating efficiency of the system; the precise control of the first stepping motor and the second stepping motor ensures the stable rotation of the turntable, realizing the precise dispersion of particles. The whole process is closed and smooth. When the feeding turntable rotates, the particles at the bottom of the sample injection container pass through the dispersion grooves, enabling individual particles to be embedded in them one by one, and the particles are transported to the blanking outlet one by one through rotation; the guiding V-shaped chute sends the particles transported by the positioning dispersion turntable to the counting module 400 for measurement by gravity. The particles can fall into the counting module 400 continuously, stably, uniformly, and orderly in a single queue via the guiding V-shaped chute, and at the same time, there is no residue of particles in the sample injection container.

[0065] It should be noted that the bottom of the groove of the positioning dispersion feeding turntable is smooth and free of burrs to ensure the precise positioning and smooth outflow of particles. The particle dispersion feeding mechanism 300 and the counting module 400 are designed as an integrated detachable module, using lightweight materials such as polytetrafluoroethylene, which is convenient for replacement and cleaning for different-sized samples.

[0066] It should also be understood that the counting module 400 uses an optoelectronic fiber with a response speed ≤ 2 μs. When the particles fall from the diversion V-shaped chute to the sample window, they pass through the counter and are counted one by one. The counting sensor uses the principle of light resistance method to detect the falling action of the particles and then emits a pulse signal; the counting module 400 is provided with an external touch screen, which can automatically display the counting data and save it to the external touch screen, and can be manually cleared and corrected, and the historical data can be viewed.

[0067] Optionally, in some embodiments, the image acquisition and analysis system 500 includes: a first image acquisition module, a second image acquisition module, and an image analysis and calculation module. Among them, the first image acquisition module is used to acquire an image of a first particle to be measured based on a first optoelectronic signal; the second image acquisition module is used to acquire an image of a second particle to be measured based on a second optoelectronic signal; the image analysis and calculation module is used to perform edge detection on the image of the first particle to be measured, and obtain the final binary image corresponding to the image of the first particle to be measured through morphological processing, and obtain the coating density data result of the first particle to be measured based on the diameter data, the weight of the first bin, and the number of particles corresponding to the final binary image of the first particle to be measured; and perform edge detection on the image of the second particle to be measured, and obtain the final binary image corresponding to the image of the second particle to be measured through morphological processing, and obtain the coating density data result of the second particle to be measured based on the diameter data, the weight of the second bin, and the number of particles corresponding to the final binary image of the second particle to be measured.

[0068] Optionally, in some embodiments, the positioning decentralized particle coating density automatic measurement system further includes: a first parallel light source, a second parallel light source, a first sample window, a second sample window, and a particle collection device. Among them, the first parallel light source and the second parallel light source are used to generate light. The first parallel light source generates an image of the first particle to be measured after passing through the first particle to be measured, and the second parallel light source generates an image of the second particle to be measured after passing through the second particle to be measured; the first sample window and the second sample window, the first sample window is located between the first parallel light source and the first image acquisition module, and the second sample window is located between the second parallel light source and the second image acquisition module; the particle collection device, the particle collection device includes a sealed first material dropping bin and a second material dropping bin. The first material dropping bin is located directly below the first sample window and is used to collect the falling first particle to be measured after being hermetically connected to the bottom end of the first sample window; the second material dropping bin is located directly below the second sample window and is used to collect the falling second particle to be measured after being hermetically connected to the bottom end of the second sample window. Among them, after the first material dropping drawer is placed with the first material dropping bin, the first material dropping bin is controlled to rise by the first mechanical switch and is hermetically connected to the bottom end of the first sample window; after the second material dropping drawer is placed with the second material dropping bin, the second material dropping bin is controlled to rise by the second mechanical switch and is hermetically connected to the bottom end of the second sample window. After the particle layer density measurement is completed, the first material dropping drawer is controlled to descend, and the first material dropping drawer is extracted to replace the particle sample, and the second material dropping drawer is controlled to descend, and the second material dropping drawer is extracted to replace the particle sample.

[0069] Optionally, in some embodiments, the materials of the first material dropping drawer and the second material dropping drawer are both made of resin or polytetrafluoroethylene.

[0070] It can be understood that the first parallel light source and the second parallel light source can adopt a parallel lens group to generate high-brightness parallel light illumination within a certain distance (i.e., provide uniform light illumination through the first parallel light source and the second parallel light source) to ensure image quality; the first sample window and the second sample window are used to pass the particles to be measured to ensure that the positions of the particles are relatively fixed during image acquisition. Thus, after the particles pass through the particle dispersion feeding mechanism 300, single particles, uniformly dispersed, and in a single queue pass through the counting module 400 one by one and then fall into the first sample window and the second sample window, facilitating the passage of the first parallel light source and the second parallel light source to collect particle image information without overlapping of the images of the particles in the front-back and left-right directions; the first image acquisition module and the second image acquisition module can adopt high-speed industrial cameras. The high-speed industrial cameras are equipped with large-target-surface ultra-long-distance telecentric lenses with a magnification of not less than 2 times, and the pixel resolution is not less than 10 million, capable of capturing particle images of 100 to 2000 microns and eliminating distortion through special design to ensure clear images. The image acquisition signal is a fiber counter pulse signal, and the camera is set to the external trigger falling-edge delay trigger mode. The trigger delay time is determined according to the actual distance between the counter and the image acquisition field of view to ensure that the particles can just fall into the acquisition window. The first image acquisition module and the second image acquisition module acquire the image information of the particles, save the images, and perform calculation and analysis. The two optical paths operate independently, using non-homologous trigger signals to trigger the two cameras to work simultaneously, respectively collect data of different types of particles, and transmit them to the computer for analysis and calculation to improve the detection speed. The image analysis and calculation module extracts the key features of the particles from the binary image, performs edge detection, obtains the final binary image through morphological processing, calculates the Feret diameter (gage diameter) of multiple points (≥180) on the boundary, and statistically calculates statistical data and distribution curves such as the average gage diameter, maximum gage diameter, minimum gage diameter, roundness (maximum gage diameter / minimum gage diameter), average gage diameter and standard deviation, roundness standard deviation, etc. of a single particle, so as to simultaneously calculate the overall volume, average single volume, and average single mass of the particles and coated particles, and finally obtain the coating density data result. The image acquisition and analysis process is highly automated, reducing human error and improving work efficiency; it can handle particles of different sizes and shapes and is applicable to a variety of application scenarios; through edge detection and morphological processing, it can analyze the microscopic structure of the particles in detail and provide rich data results. The rising of the first blanking bin and the second blanking bin will trigger the device sensor, and the sensor is used to detect whether the first blanking bin and the second blanking bin are fully raised and sealed in place. Only after both bins are correctly installed will the device be allowed to start running to avoid operation errors and perform tests when the drawer is not inserted. The materials of the first blanking drawer and the second blanking drawer are both soft materials such as resin or polytetrafluoroethylene to prevent the particles from popping out.

[0071] Optionally, in some embodiments, the first particle to be measured and the second particle to be measured are each at least one of ceramic particles, metal particles, cermet composite coating particles, plastic microspheres, zirconium balls, UO2 cores, UCO cores, and UN cores.

[0072] It can be understood that the first particle to be measured and the second particle to be measured have a density of 0.5 - 15.0 g / cm3 and a diameter of 100 μm - 2000 μm. The coating is not limited to pyrolytic carbon, silicon carbide, graphite, etc., and has a density of 0.5 - 5.0 g / cm 3 , and a diameter of 10 μm - 1000 μm.

[0073] Thus, different particles are added to the first bin and the second bin of the weighing module respectively; the push rod mechanism lifts the bin laterally, and the two-way particles flow into the particle dispersion feeding mechanism. The two positioning and dispersion feeding turntables of this mechanism perform single-particle positioning and uniform dispersion on the two-way particles and then send them into the counting module. Two photoelectric signals are generated through two measurement lines in the counting module. The image acquisition and analysis system obtains two-way particle images based on the two photoelectric signals, obtains two-way diameter data, and combines the weighing data and particle number analysis to calculate and obtain the coating density data results of the two-way particles; the control system controls the start and stop of the weighing module, the push rod mechanism, the particle dispersion feeding mechanism, the counting module, the image acquisition module, and the image analysis and calculation module, and displays and stores relevant data. Thus, it has the advantages of single-particle positioning, uniform dispersion, large sample volume, high measurement efficiency, non-destructive detection, and easy sample recovery.

[0074] To facilitate those skilled in the art to further understand the positioning and dispersion type particle coating density automatic measurement system 10 of the embodiments of the present application, the embodiments of the positioning and dispersion type particle coating density automatic measurement system 10 will be elaborated in detail below.

[0075] Specifically, as Figure 5 shown, Figure 5 is a flowchart of a measurement method involved in a positioning and dispersion type particle coating density automatic measurement system provided by an embodiment of the present application. The measurement method involved in the positioning and dispersion type particle coating density automatic measurement system includes the following steps:

[0076] S501: Add two kinds of samples to the bins on the corresponding weighing module respectively.

[0077] S502: Click "Start Measurement" in the software and wait for a few seconds until the data of the weighing module is stable.

[0078] S503: The push rod motor starts, raises the push rod, lifts the bin, and the bin funnel pours the particles into the sampling container; the stepping motor of the particle dispersion sampling mechanism runs, disperses the particles one by one, and after being counted by the counting module, sends them into the first image acquisition module and the second image acquisition module.

[0079] S504: The two measurement lines operate simultaneously. Particles pass through the counting module, and the counter triggers the camera to collect individual particle images and analyze the images simultaneously, outputting and saving the calculated data to the database.

[0080] S505: Feed the materials to the lower receiving bin, and the two bins collect the particles corresponding to their respective pipelines; after the feeding is completed, the test ends.

[0081] Furthermore, the embodiment of the present application has a dual-channel architecture and can simultaneously process two different types of particles to be measured and determine the coating density. The embodiment of the present application is not limited to dual-channel operation. Its modular design allows it to be expanded into a multi-channel configuration according to actual needs, so as to realize the synchronous measurement of the density of particles with a multi-layer coating structure; this flexibility ensures that complex or diverse samples can be efficiently processed during the analysis process, significantly improving the applicability and working efficiency of the embodiment of the present application, and at the same time providing strong support for quality control in research and production; through this scalable design, users can customize solutions according to specific application scenarios to meet the precise evaluation requirements for various materials and their coating characteristics.

[0082] Thus, the embodiment of the present application realizes the precise measurement of the coating density of dispersed particles in a positioned manner through an automated and intelligent method, greatly improving the measurement efficiency and accuracy; the embodiment of the present application has the advantages of single-particle positioning, uniform dispersion, a large sample quantity, high measurement efficiency, non-destructive testing, and easy sample recovery.

[0083] For the automatic measurement system of the coating density of positioned and dispersed particles proposed according to the embodiment of the present application, different particles are added to the first bin and the second bin of the weighing module respectively; the push rod mechanism laterally lifts the bin, and the two-way particles flow into the particle dispersion feeding mechanism. The two positioned and dispersed feeding turntables of this mechanism perform single-particle positioning and uniform dispersion on the two-way particles and then send them into the counting module. Two photoelectric signals are generated by the two measurement lines in the counting module, and two particle images are obtained by the image acquisition and analysis system according to the two photoelectric signals, obtaining two diameter data, and combining the weighing data and the number of particles for analysis and calculation to obtain the coating density data results of the two-way particles; the control system controls the start and stop of the weighing module, the push rod mechanism, the particle dispersion feeding mechanism, the counting module, the image acquisition module, and the image analysis and calculation module, and displays and stores relevant data. Thus, it has the advantages of single-particle positioning, uniform dispersion, a large sample quantity, high measurement efficiency, non-destructive testing, and easy sample recovery.

[0084] Secondly, a method for automatically measuring the coating density of positioned and dispersed particles proposed according to the embodiment of the present application is described with reference to the accompanying drawings, using the above Figure 1 automatic measurement system for the coating density of positioned and dispersed particles of the embodiment.

[0085] Figure 6 The flowchart of an automatic measurement method for the density of a positioned and dispersed particle coating provided by an embodiment of this application.

[0086] As Figure 6 shown, the automatic measurement method for the density of a positioned and dispersed particle coating includes the following steps:

[0087] In step S601, it is judged whether a measurement instruction is received.

[0088] In step S602, if a measurement instruction is received, when adding the first particle to be measured to the first bin and / or the second particle to be measured to the second bin, the weight of the particles in the first bin is read by the first weighing sensor, and the weight of the particles in the second bin is read by the second weighing sensor. The first bin and the second bin are laterally lifted by the push rod mechanism respectively, so that the first particle to be measured and the second particle to be measured flow into the particle dispersion feeding mechanism.

[0089] In step S603, the first stepping motor is controlled to run, and after the first particle to be measured is dispersed and counted by the first counting module, it is sent to the first image acquisition module. The second stepping motor is controlled to run, and after the second particle to be measured is dispersed and counted by the second counting module, it is sent to the second image acquisition module.

[0090] In step S604, an image of the first particle to be measured generated after the first parallel light source passes through the first particle to be measured is collected, and an image of the second particle to be measured generated after the second parallel light source passes through the second particle to be measured is collected.

[0091] In step S605, the coating density data of the first particle to be measured is obtained according to the diameter data obtained from the image of the first particle to be measured, the weight of the particles in the first bin, and the number of particles. The coating density data of the second particle to be measured is obtained according to the diameter data obtained from the image of the second particle to be measured, the weight of the particles in the second bin, and the number of particles.

[0092] It should be noted that the foregoing explanation of the embodiment of the automatic measurement method for the density of a positioned and dispersed particle coating is also applicable to the automatic measurement device for the density of a positioned and dispersed particle coating in this embodiment, and will not be elaborated here.

[0093] According to the automatic measurement method for the density of a positioned and dispersed particle coating proposed in the embodiments of the present application, when a measurement instruction is received, when the first to-be-measured particles are added to the first bin and / or the second to-be-measured particles are added to the second bin, the weight of the particles in the first bin is read by the first weighing sensor, and the weight of the particles in the second bin is read by the second weighing sensor. The first bin and the second bin are respectively lifted laterally by a push rod mechanism so that the first to-be-measured particles and the second to-be-measured particles flow into the particle dispersion feeding mechanism; the first stepping motor is controlled to run, and after the first to-be-measured particles are dispersed and counted by the first counting module, they are sent to the first image acquisition module, and the second stepping motor is controlled to run, and after the second to-be-measured particles are dispersed and counted by the second counting module, they are sent to the second image acquisition module; the image of the first to-be-measured particles generated after the first parallel light source passes through the first to-be-measured particles is acquired, and the image of the second to-be-measured particles generated after the second parallel light source passes through the second to-be-measured particles is acquired; the coating density data of the first to-be-measured particles is obtained based on the diameter data obtained from the image of the first to-be-measured particles, the weight of the particles in the first bin, and the number of particles, and the coating density data of the second to-be-measured particles is obtained based on the diameter data obtained from the image of the second to-be-measured particles, the weight of the particles in the second bin, and the number of particles. Thus, it has the advantages of single-particle positioning, uniform dispersion, a large sample size, high measurement efficiency, non-destructive testing, and easy sample recovery.

[0094] In the description of this specification, the description referring to terms such as "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or N embodiments or examples. In addition, without contradiction, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.

[0095] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" can explicitly or implicitly include at least one of the features. In the description of the present application, the meaning of "N" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0096] Any process or method description depicted in the flowchart or otherwise described herein may be understood to represent a module, segment, or portion of code including one or more executable instructions for implementing a customized logical function or process. The scope of the preferred embodiments of the present application includes additional implementations in which functions may be performed in a substantially simultaneous manner or in a reverse order according to the relevant functions, rather than in the order shown or discussed, which should be understood by those skilled in the art to which the embodiments of the present application pertain.

[0097] It should be understood that the various parts of the present application may be implemented by hardware, software, firmware, or a combination thereof. In the above embodiments, the N steps or methods may be implemented by software or firmware stored in a memory and executed by a suitable instruction execution system. For example, if implemented in hardware, as in another embodiment, any one or a combination of the following techniques well known in the art may be used: discrete logic circuits having logic gate circuits for implementing logical functions on data signals, application specific integrated circuits having appropriate combinational logic gate circuits, programmable gate arrays (PGAs), field programmable gate arrays (FPGAs), and the like.

[0098] Those of ordinary skill in the art can understand that all or part of the steps carried out in the method of the above embodiments can be completed by instructing relevant hardware through a program. The program can be stored in a computer-readable storage medium. When the program is executed, it includes one or a combination of the steps of the method embodiments.

Claims

1. An automatic measurement system for the density of a positioned dispersed particle coating, characterized in that, Including: a weighing module, a push rod mechanism, a particle dispersion feeding mechanism, a counting module, an image acquisition and analysis system, and a control system. Among them, the weighing module includes a first weighing device and a second weighing device. The first weighing device includes a first weighing sensor and a first bin, and the second weighing device includes a second weighing sensor and a second bin. Among them, both sides of the first bin and the second bin are provided with bin support rods. The first bin is filled with first particles to be measured, and the second bin is filled with second particles to be measured. The weight of the particles in the first bin is read by the first weighing sensor, and the weight of the particles in the second bin is read by the second weighing sensor; the push rod mechanism includes a first push rod assembly and a second push rod assembly. The first push rod assembly is used to laterally lift the first bin through the bin support rods on both sides of the first bin, and the second push rod assembly is used to laterally lift the second bin through the bin support rods on both sides of the second bin, so that the first particles to be measured and the second particles to be measured flow into the particle dispersion feeding mechanism; the particle dispersion feeding mechanism includes a first positioning and dispersing feeding turntable, a second positioning and dispersing feeding turntable, a first guiding V-shaped chute, and a second guiding V-shaped chute. Among them, both the first positioning and dispersing feeding turntable and the second positioning and dispersing feeding turntable are evenly distributed with a plurality of positioning and dispersing grooves along the outer peripheral surface. When the first positioning and dispersing feeding turntable rotates, the first particles to be measured are respectively embedded into the plurality of positioning and dispersing grooves of the first positioning and dispersing feeding turntable, and at the material dropping outlet, they fall in a single queue through the first guiding V-shaped chute to the first measurement line of the counting module; when the second positioning and dispersing feeding turntable rotates, the second particles to be measured are respectively embedded into the plurality of positioning and dispersing grooves of the second positioning and dispersing feeding turntable, and at the material dropping outlet, they fall in a single queue through the second guiding V-shaped chute to the second measurement line of the counting module; the counting module is used to generate a first photoelectric signal when detecting the falling action of the first particles to be measured dispersed through the first measurement line, and perform a first counting action to obtain the number of particles in the first line, and generate a second photoelectric signal when detecting the falling action of the second particles to be measured dispersed through the second measurement line, and perform a second counting action to obtain the number of particles in the second line; the image acquisition and analysis system is used to collect the image of the first particles to be measured based on the first photoelectric signal, and at the same time collect the image of the second particles to be measured based on the second photoelectric signal. The coating density data of the first particles to be measured is obtained according to the diameter data obtained from the image of the first particles to be measured, the weight of the particles in the first bin, and the number of particles. The coating density data of the second particles to be measured is obtained according to the diameter data obtained from the image of the second particles to be measured, the weight of the particles in the second bin, and the number of particles; The control system is used to perform start control and stop control on the weighing module, the push rod mechanism, the particle dispersion feeding mechanism, the counting module, the image acquisition module, and the image analysis and calculation module according to the received control signal, and display and store the weight of the first bin, the weight of the second bin, the first count, the second count, the images and diameter data of the first particles to be measured, the images and diameter data of the second particles to be measured, the coating density data of the first particles to be measured, and the coating density data of the second particles to be measured.

2. The automatic measurement system for the density of a positioned and dispersed particle coating according to claim 1, wherein The weighing module further includes: A first bin base and a second bin base, where the first bin base is connected to the first weighing sensor, and the second bin base is connected to the second weighing sensor.

3. The positioning and decentralized particle coating density automatic measurement system according to claim 1 or 2, characterized in that Both the first bin and the second bin adopt a laterally open funnel.

4. The positioning and decentralized particle coating density automatic measurement system according to claim 2, characterized in that The first push rod assembly is fixedly connected to the first bin base through a rotational connection, and the second push rod assembly is fixedly connected to the second bin base through a rotational connection.

5. The automatic measurement system for the density of a positioned and dispersed particulate coating according to claim 1, wherein, The particle dispersion feeding mechanism further includes: a first sample injection container, a second sample injection container, a first stepping motor, and a second stepping motor, where The upper end of the first sample injection container is docked with the first bin, and the lower end of the first sample injection container is connected to the first positioning dispersion feeding turntable; The upper end of the second sample injection container is docked with the second bin, and the lower end of the second sample injection container is connected to the second positioning dispersion feeding turntable; The first stepping motor is used to drive the first positioning dispersion feeding turntable to rotate; the second stepping motor is used to drive the second positioning dispersion feeding turntable to rotate.

6. The positioning and decentralized particle coating density automatic measurement system according to claim 1, characterized in that The image acquisition and analysis system includes: a first image acquisition module, a second image acquisition module, and an image analysis and calculation module, where The first image acquisition module is used to acquire the image of the first particles to be measured based on the first optoelectronic signal; The second image acquisition module is used to acquire the image of the second particles to be measured based on the second optoelectronic signal; The image analysis and calculation module is used to perform edge detection on the image of the first particles to be measured, and obtain the final binary image corresponding to the image of the first particles to be measured through morphological processing, and obtain the coating density data result of the first particles to be measured based on the diameter data obtained from the final binary image corresponding to the image of the first particles to be measured, the weight of the first bin, and the number of particles; and perform edge detection on the image of the second particles to be measured, and obtain the final binary image corresponding to the image of the second particles to be measured through morphological processing, and obtain the coating density data result of the second particles to be measured based on the diameter data obtained from the final binary image corresponding to the image of the second particles to be measured, the weight of the second bin, and the number of particles.

7. The positioning and decentralized particle coating density automatic measurement system according to claim 6, characterized in that It further includes: A first parallel light source and a second parallel light source for generating light. Among them, the first parallel light source generates an image of the first particle to be measured after passing through the first particle to be measured, and the second parallel light source generates an image of the second particle to be measured after passing through the second particle to be measured; A first sample window and a second sample window. The first sample window is located between the first parallel light source and the first image acquisition module, and the second sample window is located between the second parallel light source and the second image acquisition module. Both the first sample window and the second sample window are window-type falling channels; A particle collection device, which includes a sealed first blanking bin and a second blanking bin. The first blanking bin is located directly below the first sample window and is used to collect the falling first particle to be measured after being hermetically connected to the bottom end of the first sample window; the second blanking bin is located directly below the second sample window and is used to collect the falling second particle to be measured after being hermetically connected to the bottom end of the second sample window. Among them, after the first blanking drawer is placed into the first blanking bin, the first blanking bin is controlled to rise by a first mechanical switch to be hermetically connected to the bottom end of the first sample window; after the second blanking drawer is placed into the second blanking bin, the second blanking bin is controlled to rise by a second mechanical switch to be hermetically connected to the bottom end of the second sample window, and after the particle layer density measurement is completed, the first blanking drawer is controlled to descend, and the first blanking drawer is extracted to replace the particle sample, and the second blanking drawer is controlled to descend, and the second blanking drawer is extracted to replace the particle sample.

8. The positioning and decentralized particle coating density automatic measurement system according to claim 7, wherein The materials of the first blanking drawer and the second blanking drawer are both made of resin or polytetrafluoroethylene.

9. The positioning and decentralized particle coating density automatic measurement system according to claim 1, characterized in that Both the first particle to be measured and the second particle to be measured are at least one of ceramic particles, metal particles, plastic microspheres, metal-ceramic composite coating particles, zirconium balls, UO2 cores, UCO cores, and UN cores.

10. An automatic measurement method for the density of a positioned dispersed particle coating, characterized in that, Using the positioning and dispersing type automatic particle coating density measurement system according to any one of claims 1-9, including the following steps: Judge whether a measurement instruction is received; If the measurement instruction is received, when adding the first particle to be measured to the first bin and / or the second particle to be measured to the second bin, read the weight of the particles in the first bin through the first weighing sensor, and read the weight of the particles in the second bin through the second weighing sensor, and use the push rod mechanism to lift the first bin and the second bin laterally respectively, so that the first particle to be measured and the second particle to be measured flow into the particle dispersing feeding mechanism; Control the operation of the first stepping motor, disperse the first particle to be measured, count it through the first counting module, and then send it to the first image acquisition module, and control the operation of the second stepping motor, disperse the second particle to be measured, count it through the second counting module, and then send it to the second image acquisition module; Collect the image of the first particle to be measured generated after the first parallel light source passes through the first particle to be measured, and collect the image of the second particle to be measured generated after the second parallel light source passes through the second particle to be measured; Obtain the coating density data of the first particle to be measured based on the diameter data obtained from the image of the first particle to be measured, the weight of the particles in the first bin, and the number of particles, and obtain the coating density data of the second particle to be measured based on the diameter data obtained from the image of the second particle to be measured, the weight of the particles in the second bin, and the number of particles.

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