Flow field tracking particle suitable for high-salt and low-illuminance liquid environment
By designing a flow field tracking particle with adjustable density, combining non-toxic polymer materials and high reflectivity fluorescent particles, the problem that the prior art is difficult to use effectively in high salt and low illumination environments is solved, and efficient tracking of fluid research under different salt ratios and low illumination conditions is achieved.
Patent Information
- Application Number
- CN202510135582.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-07
- Publication Date
- 2025-04-29
AI Technical Summary
Existing flow field tracking particles are difficult to use effectively in high-salt and low-light liquid environments, and cannot adapt to fluid research under different salt ratios and low-light illumination conditions at the same time.
A flow field tracking particle including the core and the outer layer was designed. The core density was greater than that of the outer layer. The outer layer was mixed with pigments and fluorescent materials. The fluorescent particles were evenly distributed. The particles were spindle-shaped with a density of 0.95 g/cm3 - 1.1 g/cm3. Both the outer layer and the inner layer were made of non-toxic polymer materials.
The flow field tracking particles can effectively track the fluid movement state in high salt and low light illumination environments. They are suitable for seawater and freshwater environments with different salt ratios. Non-toxic polymer materials will not contaminate water bodies, and the fluorescent materials on the outer layer provide self-luminous effects at low illumination.
Smart Images
Figure CN119899658A_ABST
Abstract
Description
Technical Field
[0001] The invention belongs to the technical field of fluid measurement, and in particular relates to a flow field tracking particle suitable for a high-salt and low-light illumination liquid environment. Background Art
[0002] The flow state tracking technology uses holographic video analysis and recognition methods to determine the speed and direction of material changes at a point in space by analyzing the position of the fluid in space through the principle of binocular vision. Existing holographic video analysis methods are mainly used in pure / less-interference environments, but in a fluid tracking environment, the flow speed of the fluid cannot be accurately tracked due to the transparency of the fluid and the interference of bubbles. The bubbles are spherical and the local rotation form of the fluid cannot be identified.
[0003] In view of the above situation, flow field tracking particles are currently mostly used to assist in analyzing the flow state of liquid environments. However, in fluid research, especially for fluid research in seawater and freshwater environments with different salt ratios, and in low-light environments, accurately tracking the flow field is very challenging. Existing flow field tracking particles often cannot meet the requirements of effective use in high-salt and low-light liquid environments at the same time. For example, some particles have a fixed density and cannot adapt to liquid environments with density changes caused by different salt ratios; at the same time, they are difficult to be effectively captured by video equipment under low light illumination. Summary of the invention
[0004] In view of this, the purpose of the present invention is to provide a flow field tracking particle suitable for high-salinity and low-light illumination liquid environments. The present invention aims to solve the problem that existing flow field tracking particles have poor applicability and are difficult to be effectively used in high-salinity and low-light illumination liquid environments.
[0005] To achieve the above object, the present invention provides a flow field tracking particle suitable for a high-salt and low-light illumination liquid environment, comprising an inner core and an outer layer, wherein the density of the inner core is greater than the density of the outer layer, and the outer layer of the flow field tracking particle is mixed with a pigment and a fluorescent material, and the fluorescent particles of the fluorescent material are evenly distributed on the outer layer surface of the flow field tracking particle; The flow field tracking particles are spindle-shaped, with an aspect ratio of 3.0-4.0, a radial dimension of 2 mm, and a length of 6 mm-8 mm.
[0006] Furthermore, the density of the flow field tracking particles is 0.95 g / cm 3 - 1.1 g / cm 3 .
[0007] Furthermore, the outer layer and the inner core of the flow field tracking particle are both made of non-toxic polymer materials.
[0008] Furthermore, the outer layer of the flow field tracking particle is made of one or more of polyethylene, polypropylene, polystyrene, polyvinyl chloride, and polylactic acid. When the raw material of the outer layer of the flow field tracking particle includes polyvinyl chloride, a plasticizer is added.
[0009] Furthermore, the inner core of the flow field tracking particle is made of one or more of polyvinyl chloride, polylactic acid, polyester, chitosan, and silicone rubber. When the raw material of the inner core of the flow field tracking particle includes polyvinyl chloride, a plasticizer is added.
[0010] Furthermore, the flow field tracking particles are prepared by mold forming or 3D printing.
[0011] Furthermore, the fluorescent material is uniformly doped into the outer surface of the flow field tracking particles through mixing, heating and molding processes.
[0012] The present invention also provides an application of flow field tracking particles suitable for high-salt and low-light illumination liquid environments, wherein the flow field tracking particles are applied to fluid tracking to analyze the motion state of various parts of the fluid; Before use, the flow field tracking particles need to be irradiated with a mixed light source of 430 nm-580 nm, and the irradiation time is greater than 5 min.
[0013] The beneficial effects of the present invention are: 1. The flow field tracking particles of the present invention are applied to fluid tracking and are used to analyze the motion state of each part of the fluid, which is convenient for holographic video tracking of the fluid state. The particles have stronger applicability and are suitable for fluid research in seawater and freshwater environments with different salt ratios, and are suitable for low-light illumination environments.
[0014] 2. It is possible to prepare flow field tracking particles of corresponding density using non-toxic polymer materials according to the liquid environment, so as to adapt to the tracking of fluids of different densities. At the same time, non-toxic polymer materials will not pollute the water body and are easy to degrade.
[0015] 3. The outer surface of the flow field tracking particles is evenly doped with fluorescent particles with high reflectivity, which has a self-luminous effect and meets the tracking needs under low illumination conditions.
[0016] Other advantages, objectives and features of the present invention will be described in the following description to some extent, and to some extent, will be obvious to those skilled in the art based on the following examination and study, or can be taught from the practice of the present invention. The objectives and other advantages of the present invention can be realized and obtained through the following description. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] Figure 1 This is a schematic diagram of the structure of a flow field tracking particle suitable for a high-salt and low-light illumination liquid environment according to the present invention; The reference numerals in the figure are as follows: outer layer 1, inner core 2. DETAILED DESCRIPTION
[0018] In order to make the technical solutions, advantages and purposes of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the described embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work belong to the protection scope of this application.
[0019] like Figure 1 As shown, the present invention provides a flow field tracking particle suitable for high-salt and low-light intensity liquid environments, comprising an inner core 2 and an outer layer 1, wherein the density of the inner core 2 is greater than the density of the outer layer 1, and the outer layer 1 of the flow field tracking particle is mixed with a pigment and a fluorescent material with high reflectivity, and the fluorescent particles of the fluorescent material are evenly distributed on the surface of the outer layer 1 of the flow field tracking particle.
[0020] The flow field tracking particles are spindle-shaped, with an aspect ratio of 4.0, a radial dimension of 2mm, and a length of 6mm - 8mm. This spindle-shaped structure and specific size design, on the one hand, the size of the particles will not affect the flow state of the fluid, and will flip under the driving effect of the fluid; on the other hand, the spindle-shaped structure is conducive to capturing the state of the fluid through holographic video equipment, thereby analyzing the laminar or turbulent state of the fluid.
[0021] The density of the flow field tracking particle is 0.95 g / cm 3 - 1.1 g / cm 3 Such flow field tracking particles can be used in seawater and freshwater environments with different salinity ratios.
[0022] As a preferred embodiment of the present invention, the outer layer 1 and the inner core 2 of the flow field tracking particle are both made of non-toxic polymer materials, so that the flow field tracking particle will not cause pollution when entering the water body.
[0023] The outer layer 1 of the flow field tracking particle is made of one or more of polyethylene, polypropylene, polystyrene, polyvinyl chloride, and polylactic acid. When the raw material of the outer layer 1 of the flow field tracking particle includes polyvinyl chloride, a plasticizer is added; The inner core 2 of the flow field tracking particle is made of one or more of polyvinyl chloride, polylactic acid, polyester, chitosan, and silicone rubber. When the raw material of the inner core 2 of the flow field tracking particle includes polyvinyl chloride, a plasticizer is added.
[0024] As a preferred embodiment of this embodiment, the flow field tracking particles are prepared by mold forming or 3D printing.
[0025] As a preferred embodiment of this embodiment, the optical material is uniformly doped into the surface of the outer layer 1 of the flow field tracking particle through mixing, heating and molding processes.
[0026] The present invention is suitable for flow field tracking particles in high-salt and low-light illumination liquid environments, and is mainly used for fluid tracking to analyze the motion state of various parts of the fluid. Before use, the flow field tracking particles need to be irradiated with a mixed light source of 430 nm-580 nm, and the irradiation time needs to be greater than 5 min, so that the flow field tracking particles can have enough luminescence time in the low-illuminance liquid environment, so that the flow field tracking particles can be clearly evaluated and captured by the video.
[0027] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solution of the present invention can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution, which should be included in the protection scope of the present invention.
Claims
1. A flow field tracking particle suitable for high-salinity and low-light liquid environments, characterized by: It comprises an inner core and an outer layer, wherein the density of the inner core is greater than that of the outer layer, the outer layer of the flow field tracking particle is mixed with pigment and fluorescent material, and the fluorescent particles of the fluorescent material are evenly distributed on the surface of the outer layer of the flow field tracking particle; The flow field tracking particles are spindle-shaped, with an aspect ratio of 3.0-4.0, a radial dimension of 2 mm, and a length of 6 mm-8 mm.
2. The flow field tracking particle suitable for high-salinity and low-light illumination liquid environment according to claim 1, characterized in that: The density of the flow field tracking particle is 0.95 g / cm 3 - 1.1 g / cm 3 .
3. The flow field tracking particle suitable for high-salinity and low-light illumination liquid environment according to claim 2, characterized in that: The outer layer and the inner core of the flow field tracking particle are both made of non-toxic polymer materials.
4. The flow field tracking particle suitable for high-salinity and low-light illumination liquid environment according to claim 3, characterized in that: The outer layer of the flow field tracking particle is made of one or more of polyethylene, polypropylene, polystyrene, polyvinyl chloride, and polylactic acid. When the raw material of the outer layer of the flow field tracking particle includes polyvinyl chloride, a plasticizer is added.
5. The flow field tracking particle suitable for high-salinity and low-light illumination liquid environment according to claim 4, characterized in that: The inner core of the flow field tracking particle is made of one or more of polyvinyl chloride, polylactic acid, polyester, chitosan, and silicone rubber. When the raw material of the inner core of the flow field tracking particle includes polyvinyl chloride, a plasticizer is added.
6. The flow field tracking particle suitable for high-salinity and low-light illumination liquid environment according to claim 5, characterized in that: The flow field tracking particles are prepared by mold forming or 3D printing.
7. The flow field tracking particle suitable for high-salinity and low-light illumination liquid environment according to claim 6, characterized in that: The fluorescent material is uniformly doped into the outer surface of the flow field tracking particles through mixing, heating and molding processes.
8. An application of a flow field tracking particle in a high-salinity and low-light illumination liquid environment as claimed in any one of claims 1 to 7, characterized in that: The flow field tracking particles are applied to fluid tracking and used to analyze the motion state of each part of the fluid; Before use, the flow field tracking particles need to be irradiated with a mixed light source of 430 nm-580 nm, and the irradiation time is greater than 5 min.