A device for measuring particle diameter

Abstract

This utility model discloses a device for measuring particle diameter, comprising a container and a camera. The container contains particles to be dissolved and a dissolving agent for dissolving the particles. The container is made of transparent material. The camera is positioned below the container to capture images of the state of the particles within the container. It also includes an information processing system electrically connected to the camera. The information processing system processes the state images to obtain the particle diameter. This utility model provides a device for measuring particle diameter by placing a camera below the container, capturing images of the particles within the container, and inputting these images into the information processing system to obtain the particle diameter. This allows for more accurate observation of the dissolved particle diameter, resulting in more accurate diameter measurements and preventing over-dissolution or missed dissolution of particles.

Description

Technical Field

[0001] This utility model relates to the field of particle measuring devices, and more particularly to a device for measuring particle diameter. Background Technology

[0002] In the layered dissolution analysis of metallic impurities and boron (B) and phosphorus (P) impurities in the outer, inner, and seed crystal layers of granular silicon, existing techniques rely on data analysis to deduce the dissolution time at a specific mixed acid concentration, and then perform analysis after dissolving the granular silicon in a specific concentration of mixed acid for a specific time. This method may be affected by other factors, leading to over-dissolution or missed dissolution of the granular silicon, thus affecting subsequent operations. Utility Model Content

[0003] The purpose of this invention is to provide a device for measuring particle diameter. By acquiring and processing images of the state of particles inside a container, the diameter of the particles can be obtained, thus more accurately determining the dissolved state of the particles.

[0004] To solve the above technical problems, the following technical solution is adopted: This utility model provides a device for measuring particle diameter, including a container and a camera device. The container is used to hold the particles to be dissolved and the solvent for dissolving the particles. The container is made of transparent material, and the camera device is located below the container to capture images of the state of the particles inside the container. It also includes an information processing system electrically connected to the camera device, which processes the state image to obtain the diameter of the particle.

[0005] Optionally, it also includes an acid hydrolysis chamber, wherein a bottom plate is provided inside the acid hydrolysis chamber, the bottom plate dividing the internal space of the acid hydrolysis chamber into a camera room and a container room arranged vertically, the camera device being disposed in the camera room and the container being disposed in the container room.

[0006] Optionally, the base plate is made of a transparent material.

[0007] Optionally, the lens on the camera device is attached to the base plate, and the shooting range of the lens is not less than the bottom of the container.

[0008] Optionally, the container is placed on the base plate, with the lens of the camera device directly below the container.

[0009] Optionally, the information processing system includes an image processing system and a data processing system. The image processing system receives a state image acquired by the camera device and processes the state image into an information set. The data processing system calculates the diameter of the particles in the state image based on the information set.

[0010] Optionally, the camera device is a CCD camera or a digital camera module.

[0011] Optionally, the camera device captures an image of the state of the particles inside the container every thirty seconds.

[0012] Compared with the prior art, the beneficial effects achieved by this utility model are as follows: The device for measuring particle diameter provided by this utility model uses a camera device installed below a container to capture images of the particles inside the container. These images are then processed by an information processing system to determine the diameter of the particles inside the container. This allows for observation of the diameter of dissolved particles. The diameter measurement is more accurate due to the image processing, thus avoiding over-dissolution or missed dissolution of particles. The device provided by this utility model has a simple structure and is easy to use. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of the device in the embodiment of this utility model.

[0014] Explanation of reference numerals in the attached figures: 1. Dissolving chamber; 2. Base plate; 3. Camera room; 4. Camera device; 5. Container; 6. Particles; 7. Solvent; 8. Image processing system; 9. Data processing system. Detailed Implementation

[0015] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the present invention or its application or use.

[0016] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more. In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0017] Example 1

[0018] This embodiment provides a device for measuring particle diameter, including a container 5 and a camera device 4. The container 5 contains particles 6 to be dissolved and a solvent 7 for dissolving the particles 6. The camera device 4 is positioned directly below the container 5, and by capturing images of the bottom of the container 5, the dissolution status of the particles 6 in the container 5 at a certain moment can be obtained. Both the container 5 and the camera device 4 are installed in an acid hydrolysis chamber 1. The acid hydrolysis chamber 1 is provided with a base plate 2, which divides the interior of the acid hydrolysis chamber 1 into upper and lower spaces. The lower space, which is smaller, is the camera chamber 3, and the upper space, which is larger, is the container chamber. When the camera device 4 is in operation, the container 5 is installed in the container chamber and placed on the upper surface of the base plate 2. The lens of the camera device 4 is close to the lower surface of the base plate 2, and the lens is located directly below the container 5. The field of view of the lens is larger than the bottom of the container 5. Both the container 5 and the base plate 2 are made of transparent material, and the camera device 4 captures images of the bottom of the container 5.

[0019] The camera device 4 is connected to the information processing system. The state images captured by the camera device 4 are transmitted to the information processing system for processing to obtain the diameter of the particle 6 in the state images. The information processing system includes an image processing system 8 and a data processing system 9. The image processing system 8 receives the state images collected by the camera device 4 and processes the state images into an information set, which is then sent to the data processing system 9. The data processing system 9 calculates the diameter of the particle 6 using the information set.

[0020] Image processing system 8 first preprocesses the received state image, mainly removing factors that affect particle 6 identification. Then, it separates the particle region from the background region in the preprocessed state image. Next, it identifies each individual particle 6 within the particle region, eliminating invalid areas. The identified individual particles 6 are marked and numbered, and the pixel dimensions of each particle 6 and its region are extracted. The extracted pixel dimensions and particle 6 numbers (number of particles 6) are then organized into a structured information set and transmitted to data processing system 9. Data processing system 9 converts the pixel dimensions of the received information set into physical dimensions, that is, converts the particle features from pixels to millimeters or micrometers, and then calculates the diameter of particle 6. For example, if particle 6 is equivalent to a circle, the pixel area S obtained after converting the pixel dimensions of particle 6 is the diameter of particle 6. The diameter of each particle 6 in the state image is calculated, and the calculated average value can be used to represent the diameter of particle 6 in the state image.

[0021] The camera device 4 takes a picture of the state of the particle 6 every thirty seconds to obtain the real-time diameter of the particle 6. By the difference in the diameter of the particle 6 in the previous two state images, the diameter of the dissolved particle 6 can be determined, thereby determining whether the impurities on the outer layer of the particle 6 have been dissolved, thus avoiding over-dissolution or dissolution omission.

[0022] In the process of layered dissolution analysis of the outer layer, inner layer, and seed crystal metal impurities and B and P impurities of granular silicon, the apparatus provided in this embodiment is used. Granular silicon and the corresponding solvent 7 are loaded into container 5, and then container 5 is placed on the bottom plate 2 of acid hydrolysis chamber 1. A camera device 4 is installed below the bottom plate 2. The camera device 4 can be a CCD camera or other digital camera module. Container 5 is placed above the camera device 4. The camera device 4 takes a picture every 30 seconds to obtain the state image of the particles 6 in container 5. The obtained state image is uploaded to a computer with functional modules of image processing system 8 and data processing system 9. After computer processing, the real-time diameter of particle 6 is obtained. The difference between the diameters of the granular silicon before and after is calculated to obtain the diameter of the dissolved particles. Alternatively, when the diameter of the granular silicon reaches a set value, it is determined that a certain substance is completely dissolved and the dissolution of that substance is stopped.

[0023] The device provided in this embodiment obtains the diameter of particle 6 by acquiring a state image of the particle. The measured diameter of particle 6 is more accurate, and it can more accurately determine whether the substance on particle 6 has been completely dissolved, thereby avoiding the omission of the target substance on particle 6 or the excessive dissolution of other substances on the particle, which would affect the subsequent use of particle 6.

[0024] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A device for measuring particle diameter, characterized in that, The device includes a container and a camera. The container is used to hold the particles to be dissolved and the solvent used to dissolve the particles. The container is made of transparent material, and the camera is located below the container to capture images of the state of the particles inside the container. It also includes an information processing system electrically connected to the camera device, which processes the state image to obtain the diameter of the particle.

2. The apparatus for measuring particle diameter according to claim 1, characterized in that, It also includes an acid hydrolysis chamber, which is equipped with a base plate that divides the interior space of the acid hydrolysis chamber into a camera room and a container room arranged vertically. The camera device is located in the camera room, and the container is located in the container room.

3. The apparatus for measuring particle diameter according to claim 2, characterized in that, The base plate is made of transparent material.

4. The apparatus for measuring particle diameter according to claim 2 or 3, characterized in that, The lens on the camera device is close to the base plate, and the shooting range of the lens is not less than the bottom of the container.

5. The apparatus for measuring particle diameter according to claim 2, characterized in that, The container is placed on the base plate, and the lens of the camera device is located directly below the container.

6. The apparatus for measuring particle diameter according to claim 1, characterized in that, The information processing system includes an image processing system and a data processing system. The image processing system receives state images acquired by the camera device and processes the state images into an information set. The data processing system calculates the diameter of the particles in the state images based on the information set.

7. The apparatus for measuring particle diameter according to claim 1, characterized in that, The camera device is a CCD camera or a digital camera module.

8. The apparatus for measuring particle diameter according to claim 1, characterized in that, The camera device captures an image of the state of the particles inside the container every thirty seconds.

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