A transparent medium imaging system based on bubble control

Abstract

The present invention provides a transparent medium imaging system based on bubble control, which realizes communication by changing the solidification rate of a liquid transparent medium, controlling the distribution of trapped bubbles in the solidified transparent medium and imaging the trapped bubbles. The present invention is a brand-new application direction of trapped bubbles, which turns the extreme low temperature conditions in cold climate areas into advantages, realizes low-temperature imaging, and overcomes the difficulties brought by extreme low temperature to electronic imaging. The system has high precision, sensitive response, simple and reliable device, and is easy to carry. In addition, the present invention belongs to imaging technology under natural light, which overcomes the influence of natural strong light on the electronic imaging effect, and can avoid light pollution caused by electronic imaging.

Description

Technical Field

[0001] The invention belongs to the field of imaging technology, and in particular relates to a transparent medium imaging system based on bubble control. Background Art

[0002] Imaging technology has multiple meanings in modern life. It not only provides a wealth of entertainment content, but is also an important tool for information acquisition and communication. Imaging communication has the advantages of intuitiveness and immediacy, which can effectively reduce misunderstandings that may occur during communication and greatly improve communication efficiency. Current imaging communication methods mainly rely on the luminous imaging of electronic products. Extreme environmental conditions, such as severe cold or humidity, will have a negative impact on the normal operation of electronic products.

[0003] The weather is cold in high latitudes. For example, the average annual temperature in both Antarctica and the Arctic is far below freezing. In winter, the temperature in Antarctica can even drop to around -90 degrees Celsius, making it the coldest place on Earth. In addition, most cold regions are sparsely populated and cover a wide area. When working in such open areas, communication between personnel is a prerequisite for ensuring safety. Image communication has become the preferred communication method due to its accuracy and intuitiveness, but due to the influence of low temperatures, the reliability of image technology based on electronic products is difficult to guarantee, causing communication problems.

[0004] The existing imaging methods mainly include LED imaging, liquid crystal imaging, and projection imaging. The patent "Outdoor LED imaging control method, device and system" with patent application number 202410213440.9 adopts LED imaging and improves the problem of blurred imaging when the outdoor light is strong. However, one of the primary challenges faced by LED imaging in cold regions is the demand for electricity. As the temperature decreases, the chemical reaction rate of the battery will slow down, resulting in a decrease in the discharge capacity of the battery, a slower charging speed, and even possible failure to charge and discharge normally. In addition to the power consumption problem, the patent "Liquid crystal display and its visual angle difference improvement method" with patent application number 201710204062.8 is also prone to cracks and deformation at extremely low temperatures. This is because the material of the liquid crystal screen will become brittle and easily damaged at low temperatures. One of the major difficulties faced by the patent "Projection imaging system and imaging method for controlling projection brightness according to the brightness of the light channel" with patent application number 200910189382.6 in polar applications also includes light problems. Outdoor light will seriously affect the projection effect, resulting in blurred projection.

[0005] Therefore, finding a reliable and convenient method suitable for imaging in a low-temperature environment is a technical problem that needs to be solved urgently. Summary of the invention

[0006] To solve the above problems, the present invention provides a transparent medium imaging system based on bubble control, which controls the distribution of trapped bubbles in the solidified transparent medium and images them by changing the solidification rate of the liquid transparent medium. It has a simple structure and high reliability.

[0007] A transparent medium imaging system based on bubble control includes a refrigeration component 1, a temperature control component 2, a container 3 with a transparent medium inside, a data acquisition component 7, and a host computer 8;

[0008] The refrigeration component 1 is used to provide cold energy to solidify the transparent medium to the container 3, so that the transparent medium forms a series of trapped bubbles during the process of directional solidification when it encounters cold; wherein different cold energy corresponds to different solidification rates;

[0009] The temperature control component 2 is used to control the surface temperature of the refrigeration component 1 at different times according to the image to be developed, thereby adjusting the solidification rate of different areas of the transparent medium; wherein trapped bubbles are formed in the area where the solidification rate is greater than the critical rate;

[0010] The data acquisition component 7 is used to acquire the medium image after the transparent medium is solidified;

[0011] The host computer 8 is used to display the medium image according to the gray value information, wherein the gray value of the shadow area with trapped bubbles is greater than the set threshold value T1, and the gray value of the transparent area without trapped bubbles is less than the set threshold value T2.

[0012] Furthermore, when a single container 3 is used for one-dimensional imaging, the refrigeration assembly 1 is installed at the bottom of the container 3 to form a line imaging unit. Then, the method for performing one-dimensional imaging of the single container 3 is as follows:

[0013] Divide the container 3 into two or more layered areas from bottom to top, and determine the layered area that needs to be the shadow area and the layered area that needs to be the transparent area according to the image to be developed;

[0014] During the process of the transparent medium being directional solidified from bottom to top when being cooled, when solidifying to the layered area that needs to become the shadow area, the temperature control component 2 lowers the surface temperature of the refrigeration component 1 to the set temperature value T3, so that the solidification rate of the layered area that needs to become the shadow area is greater than the critical rate; when solidifying to the layered area that needs to become the transparent area, the temperature control component 2 raises the surface temperature of the refrigeration component 1 to the set temperature value T4, so that the solidification rate of the layered area that needs to become the transparent area is not greater than the critical rate;

[0015] After the transparent medium is completely solidified, the data acquisition component 7 acquires an image of the medium;

[0016] The host computer 8 develops the image to be developed according to the gray value information of the medium image.

[0017] Furthermore, when two or more containers 3 are used for two-dimensional imaging, the refrigeration assembly 1 is installed at the bottom of the container 3 to form a line imaging unit. Then, the method for two or more containers 3 to perform two-dimensional imaging is as follows:

[0018] Arrange the containers 3 linearly, and divide the containers 3 into two or more layered areas from bottom to top, and determine the layered areas that need to become shadow areas and the layered areas that need to become transparent areas on the containers 3 according to the image to be developed;

[0019] During the process of directional solidification from bottom to top when the transparent medium of each container 3 is cooled, when solidified to the layered area that needs to become the shadow area, the temperature control component 2 reduces the surface temperature of the refrigeration component 1 corresponding to the container 3 where the layered area that needs to become the shadow area is located to the set temperature value T3, so that the solidification rate of the layered area that needs to become the shadow area is greater than the critical rate; when solidified to the layered area that needs to become the transparent area, the temperature control component 2 increases the surface temperature of the refrigeration component 1 corresponding to the container 3 where the layered area that needs to become the shadow area is located to the set temperature value T4, so that the solidification rate of the layered area that needs to become the transparent area is not greater than the critical rate;

[0020] After the transparent medium in each container 3 is completely solidified, the data acquisition component 7 acquires images of all the media;

[0021] The host computer 8 develops the images required to be developed according to the gray value information of all the medium images.

[0022] Furthermore, when more than two containers 3 are used for three-dimensional imaging, the refrigeration assembly 1 is installed at the bottom of the container 3 to form a line imaging unit. Then, the method for performing three-dimensional imaging of more than two containers 3 is as follows:

[0023] Arrange the containers 3 in a plane and divide the containers 3 into two or more layered areas from bottom to top, and determine the layered areas on the containers 3 that need to be shadow areas and the layered areas that need to be transparent areas according to the image to be developed;

[0024] During the process of directional solidification from bottom to top when the transparent medium of each container 3 is cooled, when solidified to the layered area that needs to become the shadow area, the temperature control component 2 reduces the surface temperature of the refrigeration component 1 corresponding to the container 3 where the layered area that needs to become the shadow area is located to the set temperature value T3, so that the solidification rate of the layered area that needs to become the shadow area is greater than the critical rate; when solidified to the layered area that needs to become the transparent area, the temperature control component 2 increases the surface temperature of the refrigeration component 1 corresponding to the container 3 where the layered area that needs to become the shadow area is located to the set temperature value T4, so that the solidification rate of the layered area that needs to become the transparent area is not greater than the critical rate;

[0025] After the transparent medium in each container 3 is completely solidified, the data acquisition component 7 acquires images of all the media;

[0026] The host computer 8 develops the images required to be developed according to the gray value information of all the medium images.

[0027] Furthermore, when more than two containers 3 are used for one-dimensional imaging, the refrigeration assembly 1 is installed on the back of the container 3 to form a point imaging unit. Then, the method for performing one-dimensional imaging of more than two containers 3 is as follows:

[0028] Arrange the containers 3 linearly, and determine the containers 3 that need to become shadow areas and the containers 3 that need to become transparent areas according to the image to be developed;

[0029] The temperature control component 2 lowers the surface temperature of the refrigeration component 1 corresponding to the container 3 that needs to become the shadow area to the set temperature value T3, so that the solidification rate of the container 3 that needs to become the shadow area is greater than the critical rate; the temperature control component 2 increases the surface temperature of the refrigeration component 1 corresponding to the container 3 that needs to become the transparent area to the set temperature value T4, so that the solidification rate of the container 3 that needs to become the transparent area is not greater than the critical rate;

[0030] After the transparent medium in each container 3 is completely solidified, the data acquisition component 7 acquires images of all the media;

[0031] The host computer 8 develops the images required to be developed according to the gray value information of all the medium images.

[0032] Furthermore, when two or more containers 3 are used for two-dimensional imaging, the refrigeration assembly 1 is installed on the back of the container 3 to form a point imaging unit. Then, the method for two or more containers 3 to perform two-dimensional imaging is as follows:

[0033] Arrange the containers 3 in a plane, and determine the containers 3 that need to become shadow areas and the containers 3 that need to become transparent areas according to the image to be developed;

[0034] The temperature control component 2 lowers the surface temperature of the refrigeration component 1 corresponding to the container 3 that needs to become the shadow area to the set temperature value T3, so that the solidification rate of the container 3 that needs to become the shadow area is greater than the critical rate; the temperature control component 2 increases the surface temperature of the refrigeration component 1 corresponding to the container 3 that needs to become the transparent area to the set temperature value T4, so that the solidification rate of the container 3 that needs to become the transparent area is not greater than the critical rate;

[0035] After the transparent medium in each container 3 is completely solidified, the data acquisition component 7 acquires images of all the media;

[0036] The host computer 8 develops the images required to be developed according to the gray value information of all the medium images.

[0037] Furthermore, the gray value information of any medium image is obtained by:

[0038] All pixels with the same ordinate are equivalent to mass points, and the average grayscale value of all pixels with the same ordinate is taken as the grayscale value corresponding to the mass point;

[0039] The grayscale values ​​corresponding to the particles on different horizontal coordinates are used as the grayscale value information of the medium image.

[0040] Furthermore, the grayscale value of any medium image is obtained as follows:

[0041] The average grayscale value of all pixels on the medium image is taken as the grayscale value information of the medium image.

[0042] Furthermore, the refrigeration assembly 1 includes a converter 101, a refrigerator 102, a heat-conducting copper plate 103 and a heat-insulating cotton 104 which are arranged adjacent to each other and overlapped in sequence, wherein the upper edge of the heat-conducting copper plate 103 protrudes out of the overlapping area; two transparent acrylic plates sandwich the protruding upper edge of the heat-conducting copper plate 103 to form a container 3 in the form of a Hele-Shaw box.

[0043] Further, the temperature control component 2 includes a constant temperature water bath 201 and a programmable DC power supply 202;

[0044] The data acquisition component 7 includes a data acquisition unit 701, a temperature and humidity sensor 702, a SLR camera 703 and a cold light source 704;

[0045] The converter 101 with a refrigerant of adjustable temperature inside is connected to the constant temperature water bath 201, the refrigerator 102 is connected to the programmable DC power supply 202, and the programmable DC power supply 202 is further connected to the host computer 8; wherein the programmable DC power supply 202 sets the output voltage at different times according to the image to be displayed, and the refrigerator 102 is used to provide different cooling amounts for the refrigerant in the converter 101 under the control of different output voltages, so that the refrigerant adjusts the temperature of the heat-conducting copper plate 103 to the target temperature, thereby adjusting the solidification rate of different areas in the container 3; the refrigerant circulates between the constant temperature water bath 201 and the converter 101, and is used to return the refrigerant to a constant temperature;

[0046] The cold light source 704 serves as a backlight auxiliary for the transparent medium, the SLR camera 703 is used to collect photos and process videos of ice in the Hele-Shaw box and transmit them back to the host computer 8 for analysis and processing; the temperature and humidity sensor 702 is used to measure the temperature and humidity in the Hele-Shaw box, and transmit the temperature and humidity back to the host computer 8 through the data acquisition unit 701.

[0047] Beneficial effects:

[0048] 1. The present invention provides a transparent medium imaging system based on bubble control, which realizes communication by changing the solidification rate of the liquid transparent medium, controlling the distribution of trapped bubbles in the solidified transparent medium and imaging them; the present invention is a brand-new application direction of trapped bubbles, which turns the extreme low temperature conditions in cold climate areas into advantages, realizes the use of low-temperature imaging, and overcomes the difficulties brought by extreme low temperature to electronic imaging, and has high precision, sensitive response, simple and reliable device, and is easy to carry; in addition, the present invention belongs to the imaging technology under natural light, which overcomes the influence of natural strong light on the electronic imaging effect, and can avoid light pollution caused by electronic imaging.

[0049] 2. The present invention provides a transparent medium imaging system based on bubble control, which is expanded by line units to realize image display in two-dimensional and three-dimensional directions; and is expanded by point units to realize image display in one-dimensional and two-dimensional directions. It can be seen that the present invention can control the presence and distribution of trapped bubbles inside the transparent medium according to the input control signal, thereby realizing the reference imaging unit; and then expanding the reference imaging modularization of line units and point units, so as to realize complex imaging technologies in higher dimensions such as two-dimensional and three-dimensional. BRIEF DESCRIPTION OF THE DRAWINGS

[0050] Figure 1 A schematic diagram of the principle of a transparent medium imaging system based on bubble control provided by the present invention;

[0051] Figure 2 The principle analysis process of the imaging feasibility of a transparent medium imaging system based on bubble control provided by the present invention;

[0052] FIG3 (a) is a schematic diagram of bubble distribution in each layered area of ​​the container provided by the present invention;

[0053] FIG3( b ) is a schematic diagram of gray value curves in various layered areas of a container provided by the present invention;

[0054] Figure 4 A schematic diagram of a two-dimensional image obtained by linearly arranging three containers provided by the present invention;

[0055] Figure 5 A schematic diagram of a three-dimensional image obtained by arranging a plurality of containers provided by the present invention in a planar array;

[0056] Figure 6 A schematic diagram of a one-dimensional image obtained by linearly arranging multiple containers provided by the present invention;

[0057] Figure 7 A schematic diagram of a two-dimensional image obtained by arranging a plurality of containers provided by the present invention;

[0058] Figure 8A schematic structural diagram of a transparent medium imaging system based on bubble control provided by the present invention;

[0059] Fig. 9 A schematic diagram of the structure of the refrigeration assembly provided by the present invention;

[0060] FIG10( a ) is a schematic diagram of the actual distribution of bubbles in each layered area of ​​the container provided by the present invention;

[0061] FIG10( b ) is a schematic diagram of gray value curves in various layered areas of the container provided by the present invention;

[0062] FIG. 11 ( a ) is a schematic diagram of the display of the letter “F” achieved by linearly arranging three containers in three layered areas provided by the present invention;

[0063] FIG. 11( b ) is a schematic diagram of the display of the letter “H” achieved by linearly arranging three containers provided by the present invention in three layered areas. DETAILED DESCRIPTION

[0064] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application.

[0065] Most of the existing imaging methods belong to the type of electronic device imaging. Cold climate will pose great challenges to the normal use of electronic devices, such as power consumption problems, reliability problems, and clarity problems under strong outdoor light. Therefore, in order to solve the various defects of the existing imaging methods in cold climate areas, the present invention proposes a convenient and reliable imaging system suitable for application in low temperature environments. The system changes the solidification rate of the liquid transparent medium, controls the distribution of trapped bubbles in the solidified transparent medium, and displays the image to achieve communication; this is a new application direction for trapped bubbles, turning extreme low temperatures into advantages, with a simple structure and high reliability.

[0066] Specifically, the present invention provides a bubble control-based transparent medium imaging system, comprising a refrigeration component 1, a temperature control component 2, a container 3 containing a transparent medium, a data acquisition component 7, and a host computer 8;

[0067] The refrigeration component 1 is used to provide cold energy to solidify the transparent medium to the container 3, so that the transparent medium forms a series of trapped bubbles during the process of directional solidification when it encounters cold; wherein different cold energy corresponds to different solidification rates;

[0068] The temperature control component 2 is used to control the surface temperature of the refrigeration component 1 at different times according to the image to be developed, thereby adjusting the solidification rate of different areas of the transparent medium; wherein trapped bubbles are formed in the area where the solidification rate is greater than the critical rate;

[0069] The data acquisition component 7 is used to acquire the medium image after the transparent medium is solidified;

[0070] The host computer 8 is used to display the medium image according to the gray value information, wherein the gray value of the shadow area with trapped bubbles is greater than the set threshold value T1, and the gray value of the transparent area without trapped bubbles is less than the set threshold value T2.

[0071] like Figure 1 As shown, a schematic diagram of the principle of a device for imaging using trapped bubbles in a transparent medium is provided. The transparent medium mentioned can be any substance that solidifies at low temperatures, melts when heated, and can achieve low-temperature solidification, such as water and glass. The refrigeration component 1 provides the temperature required for the solidification of the transparent medium and is located at the bottom or back of the device. When it is located at the bottom, it constitutes a line imaging unit (one-dimensional), and when it is located at the back, it becomes a point imaging unit (zero-dimensional); the temperature control component 2 is connected to the refrigeration component 1 to quickly and accurately control the surface temperature of the refrigeration component to adjust the solidification rate of the transparent medium. The shell of the container 3 is transparent and heat-insulating, and it forms a cavity with the inside of the refrigeration component. Water is injected into the cavity to form a transparent medium solidification imaging area 4. During the solidification process, due to the heat preservation of the container, the solidification process proceeds in one direction, and the solidification front 5 continuously moves upward. By regulating the temperature, the trapped bubbles 6 are blocked in the ice layer to achieve the purpose of imaging.

[0072] It can be seen that the transparent medium imaging system based on bubble control of the present invention can realize reliable imaging in an extremely low temperature environment, and the method of imaging using trapped bubbles, such as Figure 2 As shown, the principle analysis scheme of the imaging feasibility of the system is as follows:

[0073] Process S0: Provides the feasibility principle of transparent medium imaging technology based on bubble control. That is, the generation of bubbles during solidification is related to the concentration of small bubbles on the solid-liquid interface. Only when the concentration reaches a certain value can larger bubbles grow and be captured by the solidification front to form trapped bubbles. The faster the solidification rate, the easier it is to capture bubbles. Conversely, if the solidification rate is lower than a certain limit, a bubble-free solid transparent medium will be formed.

[0074] Process S1: By changing the freezing temperature, the directional solidification rate can be controlled, thereby controlling the presence and distribution of bubbles in the ice, thereby achieving imaging.

[0075] Process S2: Taking into account the actual imaging requirements, such as operability, imaging rate, imaging accuracy and other factors, the imaging of the line imaging unit or the imaging of the point imaging unit is selected.

[0076] According to process S2, process S2 is further divided into:

[0077] Process S21: An imaging method using a line imaging unit as a basic element, that is, imaging is performed by controlling the layered distribution of bubbles in a container. A single container is a one-dimensional imaging unit, which requires a small number of containers and can achieve three-dimensional imaging. However, the operation is relatively difficult, and the display accuracy and clarity are relatively low.

[0078] Process S22: An imaging method using a point imaging unit as a basic element, that is, imaging is performed by controlling the presence or absence of bubbles in the container. A single container itself is a zero-dimensional imaging unit and can only represent the presence or absence of bubbles. A large number of containers are required, but the operation is simple and the display effect is accurate and clear.

[0079] According to process S21, process S21 is further divided into:

[0080] Process S211: Controlling the layered distribution of trapped bubbles after solidification of a transparent medium in a single container, the bubble area and the bubble-free area present different optical phenomena, forming a one-dimensional 0-1 distribution.

[0081] That is, when a single container 3 is used for one-dimensional imaging, the refrigeration assembly 1 is installed at the bottom of the container 3 to form a line imaging unit. Then, the method for performing one-dimensional imaging of the single container 3 is as follows:

[0082] The container 3 is divided into two or more layered areas from bottom to top, and the layered areas that need to become shadow areas and the layered areas that need to become transparent areas are determined according to the image to be developed; in the process of the transparent medium being directional solidified from bottom to top when it is cooled, when it solidifies to the layered area that needs to become the shadow area, the temperature control component 2 lowers the surface temperature of the refrigeration component 1 to the set temperature value T3, so that the solidification rate of the layered area that needs to become the shadow area is greater than the critical rate; when it solidifies to the layered area that needs to become the transparent area, the temperature control component 2 increases the surface temperature of the refrigeration component 1 to the set temperature value T4, so that the solidification rate of the layered area that needs to become the transparent area is not greater than the critical rate; after the transparent medium is completely solidified, the data acquisition component 7 acquires the medium image; the host computer 8 develops the image to be developed according to the grayscale value information of the medium image.

[0083] Process S212: Arrange multiple containers linearly, control the layered distribution of trapped bubbles after the transparent medium in each container solidifies, and the bubble area and the bubble-free area present different optical phenomena. Multiple containers are combined to form a two-dimensional plane pattern for imaging.

[0084] That is, when two or more containers 3 are used for two-dimensional imaging, the refrigeration assembly 1 is installed at the bottom of the container 3 to form a line imaging unit, and the method for two or more containers 3 to perform two-dimensional imaging is:

[0085] Arrange the containers 3 linearly, and divide the containers 3 into more than two layered areas from bottom to top. At the same time, determine the layered areas on the containers 3 that need to become shadow areas and the layered areas that need to become transparent areas according to the images to be developed. When the transparent medium of each container 3 solidifies from bottom to top when it is cooled, when it solidifies to the layered area that needs to become the shadow area, the temperature control component 2 reduces the surface temperature of the refrigeration component 1 corresponding to the container 3 where the layered area that needs to become the shadow area is located to the set temperature value T3, so that the solidification rate of the layered area that needs to become the shadow area is greater than the critical rate. When it solidifies to the layered area that needs to become the transparent area, the temperature control component 2 increases the surface temperature of the refrigeration component 1 corresponding to the container 3 where the layered area that needs to become the shadow area is located to the set temperature value T4, so that the solidification rate of the layered area that needs to become the transparent area is not greater than the critical rate. After the transparent medium of each container 3 is completely solidified, the data acquisition component 7 acquires all medium images. The host computer 8 develops the image to be developed according to the gray value information of all medium images.

[0086] Process S213: Arrange multiple containers in a plane, control the layered distribution of trapped bubbles after the transparent medium in each container solidifies, and the bubble area and the bubble-free area present different optical phenomena. Multiple containers are combined to form a three-dimensional pattern for imaging.

[0087] That is, when more than two containers 3 are used for three-dimensional imaging, the refrigeration assembly 1 is installed at the bottom of the container 3 to form a line imaging unit, and the method for performing three-dimensional imaging of more than two containers 3 is:

[0088] Arrange the containers 3 in a plane, and divide the containers 3 into more than two layered areas from bottom to top. At the same time, determine the layered areas on each container 3 that need to become shadow areas and the layered areas that need to become transparent areas according to the images to be developed. When the transparent medium of each container 3 solidifies from bottom to top when it is cooled, when it solidifies to the layered area that needs to become the shadow area, the temperature control component 2 reduces the surface temperature of the refrigeration component 1 corresponding to the container 3 where the layered area that needs to become the shadow area is located to the set temperature value T3, so that the solidification rate of the layered area that needs to become the shadow area is greater than the critical rate; when it solidifies to the layered area that needs to become the transparent area, the temperature control component 2 increases the surface temperature of the refrigeration component 1 corresponding to the container 3 where the layered area that needs to become the shadow area is located to the set temperature value T4, so that the solidification rate of the layered area that needs to become the transparent area is not greater than the critical rate; after the transparent medium in each container 3 is completely solidified, the data acquisition component 7 acquires all medium images; the host computer 8 develops the image to be developed according to the gray value information of all medium images.

[0089] According to process S22, process S22 is further divided into:

[0090] Process S221: Arrange multiple containers linearly, and control the presence or absence of trapped bubbles in each container after the transparent medium solidifies to form a one-dimensional 0-1 distribution.

[0091] That is, when more than two containers 3 are used for one-dimensional imaging, the refrigeration assembly 1 is installed on the back of the container 3 to form a point imaging unit, and the method for performing one-dimensional imaging of more than two containers 3 is:

[0092] Arrange the containers 3 linearly, and determine the containers 3 that need to become the shadow area and the containers 3 that need to become the transparent area according to the image to be developed; the temperature control component 2 lowers the surface temperature of the refrigeration component 1 corresponding to the container 3 that needs to become the shadow area to the set temperature value T3, so that the solidification rate of the container 3 that needs to become the shadow area is greater than the critical rate; the temperature control component 2 increases the surface temperature of the refrigeration component 1 corresponding to the container 3 that needs to become the transparent area to the set temperature value T4, so that the solidification rate of the container 3 that needs to become the transparent area is not greater than the critical rate; after the transparent medium in each container 3 is completely solidified, the data acquisition component 7 acquires all medium images; the host computer 8 develops the image to be developed according to the gray value information of all medium images.

[0093] Process S222: Arrange multiple containers in a plane, control the presence or absence of trapped bubbles after the transparent medium in each container solidifies, form two-dimensional text or pattern, and realize imaging.

[0094] That is, when two or more containers 3 are used for two-dimensional imaging, the refrigeration assembly 1 is installed on the back of the container 3 to form a point imaging unit, and the method for two or more containers 3 to perform two-dimensional imaging is:

[0095] The containers 3 are arranged in a plane, and the containers 3 that need to become the shadow area and the containers 3 that need to become the transparent area are determined according to the image to be developed; the temperature control component 2 lowers the surface temperature of the refrigeration component 1 corresponding to the container 3 that needs to become the shadow area to the set temperature value T3, so that the solidification rate of the container 3 that needs to become the shadow area is greater than the critical rate; the temperature control component 2 increases the surface temperature of the refrigeration component 1 corresponding to the container 3 that needs to become the transparent area to the set temperature value T4, so that the solidification rate of the container 3 that needs to become the transparent area is not greater than the critical rate; after the transparent medium in each container 3 is completely solidified, the data acquisition component 7 acquires all medium images; the host computer 8 develops the image to be developed according to the gray value information of all medium images.

[0096] According to the method flow of using trapped bubbles for imaging, if the imaging method of the line imaging unit is adopted, the refrigeration component is located at the bottom of the container. The following provides a specific method for controlling the layered distribution of bubbles to achieve imaging with the line imaging unit as the basic element, corresponding to process S21, the principle and implementation steps are as follows.

[0097] In the first step, the solidification container is divided into several layered areas. Taking Figure 3 (a) as an example, 101 to 106 are imaging areas, and 10 is the starting area. The layered area with bubbles is a shadow area, and the area without bubbles is a transparent area.

[0098] The second step is to carry out directional solidification of the transparent medium. During the solidification process, the temperature decreases steadily at a relatively slow rate, so that there are no trapped bubbles in the solidified transparent medium. If a layered area needs to become a shadow area, the temperature is quickly reduced and then quickly raised, so that the solidification rate exceeds the limit, and the target area can be solidified into a shadow area with trapped bubbles, while the solidification process of other areas is not affected; if a layered area needs to become a transparent area, the original temperature change rate can be kept unchanged.

[0099] The third step, if only a single container is used for imaging, that is, corresponding to process S211, the shadow area with bubbles in the stratified area is coded as "1", and the transparent area without bubbles is coded as "0". The identification of the shadow area and the transparent area is strictly judged by grayscale value to avoid visual deviation. All points with the same vertical coordinate are simplified into one point, and the grayscale value of these points is averaged to obtain the grayscale value of the point. The grayscale value of ice with bubbles is smaller, and a peak will be generated on the curve in the negative direction of the horizontal axis. The grayscale value curve corresponding to a certain area has a peak, as shown in Figure 3 (b), that is, the area represented by the code is 1, otherwise, it is judged as 0.

[0100] In the fourth step, if multiple containers are used for two-dimensional or three-dimensional imaging, corresponding to processes S212 and S213, it is only necessary to arrange the containers, control the layered distribution of bubbles in the containers, form text or patterns, and visually identify them. Figure 4 The three containers shown are arranged linearly, and the layered distribution of bubbles is controlled to form the letter "Z". Similarly, if more containers are arranged in a plane, a three-dimensional pattern can be formed, wherein the plane described in the plane arrangement at this time is a top-down plane, such as Figure 5 shown.

[0101] According to the method flow of using trapped bubbles for imaging, if the imaging method of the point imaging unit is adopted, the refrigeration component is located on the back of the container, and the specific method of controlling the presence or absence of bubbles to realize imaging with the point imaging unit as the basic element is provided below, corresponding to process S22, and the specific implementation steps are as follows.

[0102] The first step is to arrange and match multiple containers linearly or in a plane.

[0103] The second step is to control the presence or absence of trapped bubbles in each container.

[0104] In the third step, if multiple containers are arranged linearly, the presence or absence of trapped bubbles in the solid transparent medium in each container is controlled respectively. The darker color is the solid transparent medium with bubbles, and the lighter color is the solid transparent medium without bubbles, forming a one-dimensional image, such as Figure 6 As shown, the output of the encoding "1101001001" is achieved.

[0105] In the fourth step, if multiple containers are arranged in a plane, similarly, the presence or absence of trapped bubbles in the solid transparent medium in each container is controlled respectively. The darker color is the solid transparent medium with bubbles, and the lighter color is the solid transparent medium without bubbles. The solid transparent medium with bubbles is used as pixel points to construct graphics and combine them to form two-dimensional text and images, such as Figure 7 shown.

[0106] The following uses water as a transparent medium to introduce in detail an experimental system provided by the present invention that uses trapped bubbles in ice for imaging. The experimental system includes a refrigeration component 1, a temperature control component 2, an ice container 3, a data acquisition component 7, and a host computer 8. The temperature control component 2 includes a constant temperature water bath 201 and a programmable DC power supply 202. In a laboratory environment, the shell of the ice container 3 is made of a transparent acrylic plate with a thickness of 5 mm. The data acquisition component 7 includes a data acquisition unit 701, a temperature and humidity sensor 702, a SLR camera 703, and a cold light source 704. Figure 8 shown.

[0107] Furthermore, the refrigeration assembly 1 includes a converter 101, a refrigerator 102, a heat-conducting copper plate 103 and a heat-insulating cotton 104. Fig. 9 As shown. The converter 101, refrigerator 102, thermal copper plate 103 and thermal insulation cotton 104 are arranged adjacent to each other and overlapped in sequence, firmly fixed and fitted, wherein a small area of ​​the upper edge of the thermal copper plate 3 protrudes from the overlapping area. The converter 101 contains a temperature-adjustable refrigerant, and the refrigerator 102 can meet the purpose of precise temperature control by electric control. The two cooperate to quickly and accurately adjust the temperature of the thermal copper plate 103 to the target temperature. Two parallel transparent acrylic plates 3 clamp the protruding upper edge of the thermal copper plate 103 to form a Hele-Shaw box, and the middle of the box is a one-dimensional cavity, which is filled with water to form an ice imaging area 4.

[0108] The converter 101 is connected to the constant temperature water bath 201, the refrigerator 102 is connected to the programmable DC power supply 202, and the programmable DC power supply 202 is connected to the host computer 8. The above devices together constitute the input end of the experimental device to achieve rapid and accurate control of the freezing temperature.

[0109] At the output end, the cold light source 704 is backlight-assisted, and the SLR camera 703 collects photos of ice in the Hele-Shaw box and video of the process and transmits them back to the host computer 8 for analysis and processing. At the same time, the temperature data in the Hele-Shaw box and the environmental data measured by the temperature and humidity sensor 702 are transmitted back to the host computer 8 through the data acquisition unit 701.

[0110] The experimental process includes the following steps:

[0111] The first step is to define the coding area of ​​the freezing container 3 and fill it with water. A certain margin should be kept between the water surface and the height of the container to leave room for volume expansion caused by freezing.

[0112] The second step is to turn on the constant temperature water bath 201 to cool, adjust its temperature to -30°C, turn on the cold light source 704, and turn on the data acquisition unit 701 to record data;

[0113] The third step is to wait until the temperature of the constant temperature water area 201 drops to -30°C and remains stable, start the coolant flow between the constant temperature water bath 201 and the converter 101, turn on the programmable DC power supply to execute the program, and turn on the camera 703 to take pictures;

[0114] In the fourth step, the ice layer in the ice imaging area 4 starts to grow at a rate designed by the program and locks the bubbles in the set area. The camera 703 records the image of the ice imaging area and transmits it back to the host computer 8. The actual image captured is shown in FIG10 (a).

[0115] In the fifth step, the grayscale values ​​of the captured image are averaged according to the layered areas. The corresponding average grayscale values ​​are shown in Figure 10 (b). The layered areas with peak values ​​are determined as bubble areas, which are coded as "1", and the layered areas without peak values ​​are determined as transparent areas, which are coded as "0". Thus, by controlling the temperature change at the input end, the corresponding image can be displayed at the output end, realizing 0-1 distribution imaging.

[0116] It should be noted that in addition to using grayscale values ​​to identify the distribution of bubbles, the present invention can also use AI image recognition and other means to identify the bubble distribution information in the image, which will not be elaborated in the present invention.

[0117] In the sixth step, if there is a need for two-dimensional or three-dimensional imaging, multiple containers are arranged to control the layered distribution of trapped bubbles in the ice of each container to form an image. As shown in Figures 11(a) and 11(b), three containers are linearly arranged to achieve the imaging of the letters "F" and "H" in three layered areas.

[0118] It can be seen that the present invention proposes a display system of a temperature-controllable transparent medium directional solidification line unit and a point unit. According to the input control signal, the directional solidification rate of the transparent medium in the display system of the line unit and the point unit is controlled to control the presence and distribution of trapped bubbles inside, thereby realizing a reference display unit; at the same time, the present invention can also be expanded using line units to realize image display in two-dimensional and three-dimensional directions; in addition, the present invention can also be expanded using point units to realize image display in one-dimensional and two-dimensional directions.

[0119] Of course, the present invention may have many other embodiments. Without departing from the spirit and essence of the present invention, those skilled in the art may certainly make various corresponding changes and modifications based on the present invention, but these corresponding changes and modifications should all fall within the scope of protection of the claims attached to the present invention.

Claims

1. A transparent medium imaging system based on bubble control, characterized in that: It comprises a refrigeration component (1), a temperature control component (2), a container (3) containing a transparent medium, a data acquisition component (7), and a host computer (8); The refrigeration component (1) is used to provide cold energy to the container (3) for solidifying the transparent medium, so that the transparent medium forms a series of trapped bubbles during the process of directional solidification when it encounters cold; wherein different cold energy corresponds to different solidification rates; The temperature control component (2) is used to control the surface temperature of the refrigeration component (1) at different times according to the image to be developed, thereby adjusting the solidification rate of different areas of the transparent medium; wherein trapped bubbles are formed in the area where the solidification rate is greater than the critical rate; The data acquisition component (7) is used to acquire a medium image after the transparent medium is solidified; The host computer (8) is used to display the image according to the gray value information of the medium image, wherein the gray value of the shadow area with trapped bubbles is greater than a set threshold value T1, and the gray value of the transparent area without trapped bubbles is less than a set threshold value T2; The refrigeration assembly (1) comprises a converter (101), a refrigerator (102), a heat-conducting copper plate (103) and a heat-insulating cotton (104) arranged adjacent to each other and overlapping in sequence, wherein the upper edge of the heat-conducting copper plate (103) protrudes out of the overlapping area; two transparent acrylic plates sandwich the protruding upper edge of the heat-conducting copper plate (103) to form a container (3) in the form of a Hele-Shaw box; The temperature control component (2) comprises a constant temperature water bath (201) and a programmable direct current power supply (202); The data acquisition component (7) comprises a data acquisition unit (701), a temperature and humidity sensor (702), a single-lens reflex camera (703) and a cold light source (704); A converter (101) containing a refrigerant with adjustable temperature is connected to a constant temperature water bath (201), a refrigerator (102) is connected to a programmable DC power supply (202), and the programmable DC power supply (202) is further connected to a host computer (8); wherein the programmable DC power supply (202) sets the output voltage at different times according to the image to be displayed, and the refrigerator (102) is used to provide different cooling amounts for the refrigerant in the converter (101) under the control of different output voltages, so that the refrigerant adjusts the temperature of the heat-conducting copper plate (103) to the target temperature, thereby adjusting the solidification rate of different areas in the container (3); the refrigerant circulates between the constant temperature water bath (201) and the converter (101) to return the refrigerant to a constant temperature; The cold light source (704) serves as a backlight auxiliary for the transparent medium. The single-lens reflex camera (703) is used to collect photos of ice formation in the Hele-Shaw box and video recording of the process and transmit them back to the host computer (8) for analysis and processing. The temperature and humidity sensor (702) is used to measure the temperature and humidity in the Hele-Shaw box and transmit the temperature and humidity back to the host computer (8) through the data acquisition unit (701).

2. A bubble-controlled transparent medium imaging system as claimed in claim 1, characterized in that: When a single container (3) is used for one-dimensional imaging, the refrigeration assembly (1) is installed at the bottom of the container (3) to form a line imaging unit. The method for performing one-dimensional imaging of the single container (3) is as follows: Dividing the container (3) into two or more layered areas from bottom to top, and determining the layered area to be a shadow area and the layered area to be a transparent area according to the image to be displayed; During the process of the transparent medium being directional solidified from bottom to top when being cooled, when solidifying to a layered area that needs to become a shadow area, the temperature control component (2) lowers the surface temperature of the refrigeration component (1) to a set temperature value T3, so that the solidification rate of the layered area that needs to become a shadow area is greater than a critical rate; when solidifying to a layered area that needs to become a transparent area, the temperature control component (2) raises the surface temperature of the refrigeration component (1) to a set temperature value T4, so that the solidification rate of the layered area that needs to become a transparent area is not greater than a critical rate; After the transparent medium is completely solidified, the data acquisition component (7) acquires an image of the medium; The host computer (8) develops the image to be developed according to the gray value information of the medium image.

3. A transparent medium imaging system based on bubble control as claimed in claim 1, characterized in that: When two or more containers (3) are used for two-dimensional imaging, the refrigeration assembly (1) is installed at the bottom of the container (3) to form a line imaging unit. The method for two or more containers (3) to perform two-dimensional imaging is as follows: Arranging the containers (3) linearly, and dividing the containers (3) into two or more layered areas from bottom to top, and determining the layered areas on the containers (3) that need to become shadow areas and the layered areas that need to become transparent areas according to the image to be developed; During the process of the transparent medium in each container (3) being directional solidified from bottom to top when being cooled, when solidified to the layered area that needs to become the shadow area, the temperature control component (2) reduces the surface temperature of the refrigeration component (1) corresponding to the container (3) where the layered area that needs to become the shadow area is located to the set temperature value T3, so that the solidification rate of the layered area that needs to become the shadow area is greater than the critical rate; when solidified to the layered area that needs to become the transparent area, the temperature control component (2) increases the surface temperature of the refrigeration component (1) corresponding to the container (3) where the layered area that needs to become the shadow area is located to the set temperature value T4, so that the solidification rate of the layered area that needs to become the transparent area is not greater than the critical rate; After the transparent medium in each container (3) is completely solidified, the data acquisition component (7) acquires images of all the media; The host computer (8) displays the images required to be displayed according to the gray value information of all medium images.

4. A bubble-controlled transparent medium imaging system as claimed in claim 1, characterized in that: When two or more containers (3) are used for three-dimensional imaging, the refrigeration assembly (1) is installed at the bottom of the container (3) to form a line imaging unit. The method for performing three-dimensional imaging of the two or more containers (3) is as follows: Arranging the containers (3) in a plane, and dividing the containers (3) into two or more layered areas from bottom to top, and determining the layered areas on the containers (3) that need to become shadow areas and the layered areas that need to become transparent areas according to the image to be developed; During the process of the transparent medium in each container (3) being directional solidified from bottom to top when being cooled, when solidified to the layered area that needs to become the shadow area, the temperature control component (2) reduces the surface temperature of the refrigeration component (1) corresponding to the container (3) where the layered area that needs to become the shadow area is located to the set temperature value T3, so that the solidification rate of the layered area that needs to become the shadow area is greater than the critical rate; when solidified to the layered area that needs to become the transparent area, the temperature control component (2) increases the surface temperature of the refrigeration component (1) corresponding to the container (3) where the layered area that needs to become the shadow area is located to the set temperature value T4, so that the solidification rate of the layered area that needs to become the transparent area is not greater than the critical rate; After the transparent medium in each container (3) is completely solidified, the data acquisition component (7) acquires images of all the media; The host computer (8) displays the images required to be displayed according to the gray value information of all medium images.

5. The transparent medium imaging system based on bubble control as claimed in claim 1, characterized in that: When two or more containers (3) are used for one-dimensional imaging, the refrigeration assembly (1) is installed on the back of the container (3) to form a point imaging unit. The method for performing one-dimensional imaging of the two or more containers (3) is as follows: Arrange the containers (3) linearly, and determine the containers (3) that need to become shadow areas and the containers (3) that need to become transparent areas according to the image to be developed; The temperature control component (2) lowers the surface temperature of the refrigeration component (1) corresponding to the container (3) that needs to become the shadow area to a set temperature value T3, so that the solidification rate of the container (3) that needs to become the shadow area is greater than the critical rate; the temperature control component (2) raises the surface temperature of the refrigeration component (1) corresponding to the container (3) that needs to become the transparent area to a set temperature value T4, so that the solidification rate of the container (3) that needs to become the transparent area is not greater than the critical rate; After the transparent medium in each container (3) is completely solidified, the data acquisition component (7) acquires images of all the media; The host computer (8) displays the images required to be displayed according to the gray value information of all medium images.

6. A bubble control based transparent medium imaging system as claimed in claim 1, characterized in that: When two or more containers (3) are used for two-dimensional imaging, the refrigeration assembly (1) is installed on the back of the container (3) to form a point imaging unit. The method for two or more containers (3) to perform two-dimensional imaging is as follows: Arranging the containers (3) in a plane, and determining the containers (3) that need to become shadow areas and the containers (3) that need to become transparent areas according to the image to be developed; The temperature control component (2) lowers the surface temperature of the refrigeration component (1) corresponding to the container (3) that needs to become the shadow area to a set temperature value T3, so that the solidification rate of the container (3) that needs to become the shadow area is greater than the critical rate; the temperature control component (2) raises the surface temperature of the refrigeration component (1) corresponding to the container (3) that needs to become the transparent area to a set temperature value T4, so that the solidification rate of the container (3) that needs to become the transparent area is not greater than the critical rate; After the transparent medium in each container (3) is completely solidified, the data acquisition component (7) acquires images of all the media; The host computer (8) displays the images required to be displayed according to the gray value information of all medium images.

7. A transparent medium imaging system based on bubble control as claimed in any one of claims 2 to 4, characterized in that: The method for obtaining the gray value information of any medium image is: All pixels with the same ordinate are equivalent to mass points, and the average grayscale value of all pixels with the same ordinate is taken as the grayscale value corresponding to the mass point; The grayscale values ​​corresponding to the particles on different horizontal coordinates are used as the grayscale value information of the medium image.

8. A transparent medium imaging system based on bubble control as claimed in claim 5 or 6, characterized in that: The method for obtaining the grayscale value of any medium image is: The average grayscale value of all pixels on the medium image is taken as the grayscale value information of the medium image.

Images