Apparent volume measurement device, method and equipment

Abstract

The present application provides an apparent volume measurement device, method and equipment, which belongs to the field of battery technology. The apparent volume measurement device includes: a measuring container, an ultrasonic excitation component, an ultrasonic receiving component and a processor. The measuring container is used to hold a sample to be tested and a liquid, and the liquid is an ultrasonic transmission medium. The ultrasonic excitation component is used to emit ultrasonic waves to the measuring container, and the ultrasonic receiving component is used to receive ultrasonic signals of the ultrasonic waves passing through the measuring container. The processor is used to determine a first liquid surface contour image of the liquid surface according to a first ultrasonic signal obtained by the ultrasonic receiving component before the sample to be tested is placed in the measuring container, and to determine a second liquid surface contour image of the liquid surface according to a second ultrasonic signal obtained after the sample to be tested is placed in the measuring container, and determine the apparent volume of the sample to be tested through the first liquid surface contour image and the second liquid surface contour image. It can meet the measurement requirements of irregularly shaped samples to be tested and improve the accuracy of apparent volume measurement.

Description

Technical Field

[0001] The present application relates to the field of battery technology, and in particular to an apparent volume measurement device, method and equipment. Background Art

[0002] In the process of solid-state battery densification detection, the apparent volume of the solid-state battery is measured. The porosity of the solid-state battery can be calculated through the apparent volume to detect the densification degree of the solid-state battery. That is, the accuracy of the apparent volume measurement will affect the accuracy of the densification degree detection.

[0003] Therefore, how to improve the accuracy of apparent volume measurement is a technical problem that needs to be solved urgently. Summary of the invention

[0004] The present application aims to solve at least one of the technical problems in the background technology. To this end, one object of the present application is to provide an apparent volume measurement device, method and equipment to improve the accuracy of apparent volume measurement.

[0005] The embodiment of the first aspect of the present application provides an apparent volume measurement device, including: a measuring container, an ultrasonic excitation component, an ultrasonic receiving component and a processor. The measuring container is used to hold a sample to be tested and a liquid, and the liquid is an ultrasonic transmission medium. The ultrasonic excitation component is used to emit ultrasonic waves to the measuring container, the ultrasonic receiving component is used to receive ultrasonic signals of the ultrasonic waves passing through the measuring container, and the processor is used to determine a first liquid surface contour image of the liquid surface according to a first ultrasonic signal obtained by the ultrasonic receiving component before the sample to be tested is placed in the measuring container, and to determine a second liquid surface contour image of the liquid surface according to a second ultrasonic signal obtained after the sample to be tested is placed in the measuring container, and determine the apparent volume of the sample to be tested through the first liquid surface contour image and the second liquid surface contour image; wherein the ultrasonic frequency corresponding to the first ultrasonic signal is lower than the ultrasonic frequency corresponding to the second ultrasonic signal.

[0006] In the technical solution of the embodiment of the present application, the sample to be tested is placed in a liquid, and the sample to be tested will displace a part of the liquid, that is, the liquid level will rise, and the contour image of the liquid level is obtained by using ultrasonic signals, thereby detecting the change in the liquid level, so that the apparent volume of the sample to be tested can be obtained, which can meet the measurement requirements of irregularly shaped samples to be tested, and the ultrasonic frequency corresponding to the ultrasonic signal imaged after the sample is placed is higher, which improves the resolution of the image and reduces the interference of the sample to be tested on the liquid level measurement, thereby improving the accuracy of the liquid level measurement. Compared with the method of calculating the apparent volume by measuring the size, the accuracy of the apparent volume measurement is improved.

[0007] In some embodiments, the apparent volume measurement device further includes: an excitation controller connected to the ultrasonic excitation component signal. The excitation controller is configured to control the ultrasonic excitation component to emit a first ultrasonic wave before the sample to be measured is placed in the measurement container, and to control the ultrasonic excitation component to emit a second ultrasonic wave after the sample to be measured is placed in the measurement container. The excitation controller is used to control the frequency of the ultrasonic wave so that the first ultrasonic wave and the second ultrasonic wave have good penetration to penetrate the measurement container, the liquid and the sample to be measured, so as to be received by the ultrasonic receiving component.

[0008] In some embodiments, the ultrasonic excitation assembly includes a plurality of ultrasonic excitation units, and the plurality of ultrasonic excitation units are arranged at intervals along the circumference of the measurement container, thereby improving the stability and accuracy of the apparent volume measurement.

[0009] In some embodiments, the ultrasonic receiving assembly includes a plurality of ultrasonic receiving units, and the plurality of ultrasonic receiving units are arranged at intervals along the circumference of the measuring container, thereby improving the stability and accuracy of the apparent volume measurement.

[0010] In some embodiments, the ultrasonic excitation component and the ultrasonic receiving component are respectively located on opposite sides of the measuring container and are respectively attached to the outer surface of the measuring container, so that the ultrasonic wave can pass through the measuring container and be received by the ultrasonic receiving component, while reducing the loss of the ultrasonic wave during propagation.

[0011] In some embodiments, the measuring container includes a container body, a liquid injection port connected to the container body, and a sample inlet connected to the container body and spaced from the liquid injection port, the sample inlet being used to put the sample in. By providing the liquid injection port and the sample inlet being independent of each other, it is convenient to put the sample in the measuring container.

[0012] In some embodiments, the viscosity of the liquid is greater than or equal to 3000 mPa·s and less than or equal to 10000 mPa·s. By selecting a liquid with a higher viscosity, the phenomenon of the liquid entering into the gaps of the sample to be measured is reduced, thereby improving the accuracy of the apparent volume measurement.

[0013] An embodiment of the second aspect of the present application provides an apparent volume measurement method, including: obtaining a first ultrasonic signal of a measuring container containing liquid before a sample to be tested is placed therein; obtaining a second ultrasonic signal of the measuring container after the sample to be tested is placed therein; determining a first liquid surface contour image of the liquid surface according to the first ultrasonic signal, determining a second liquid surface contour image of the liquid surface according to the second ultrasonic signal, and determining the apparent volume of the sample to be tested through the first liquid surface contour image and the second liquid surface contour image; wherein the liquid is an ultrasonic transmission medium, and the ultrasonic frequency corresponding to the first ultrasonic signal is lower than the ultrasonic frequency corresponding to the second ultrasonic signal.

[0014] In some embodiments, a first liquid surface contour image of the liquid surface is determined according to a first ultrasonic signal, a second liquid surface contour image of the liquid surface is determined according to a second ultrasonic signal, and the apparent volume of the sample to be tested is determined by the first liquid surface contour image and the second liquid surface contour image, including: taking the liquid surface height at the preset contour position in the first liquid surface contour image as the first liquid surface height; taking the liquid surface height at the preset contour position in the second liquid surface contour image as the second liquid surface height. The liquid surface contour is imaged using ultrasonic signals, and the liquid surface height is determined by the liquid surface contour, which improves the accuracy of liquid surface height detection, thereby improving the accuracy of apparent volume measurement.

[0015] In some embodiments, the preset contour position is the lowest liquid level position, the highest liquid level position, or the liquid level contour position corresponding to any specified position at the bottom of the measuring container. By selecting the preset contour position as a unified reference point to determine the first liquid level height and the second liquid level height, the accuracy of the first liquid level height and the second liquid level height detection is improved, thereby improving the accuracy of the apparent volume measurement.

[0016] In some embodiments, determining a first liquid level contour image of the liquid level according to the first ultrasonic signal includes: determining the first liquid level contour image based on a portion of the first ultrasonic signal that is higher than a first preset signal threshold, and the remaining portion of the first ultrasonic signal that is lower than the first preset signal threshold; and wherein determining a second liquid level contour image of the liquid level according to the second ultrasonic signal includes: determining the second liquid level contour image based on a portion of the second ultrasonic signal that is higher than a second preset signal threshold, and the remaining portion of the second ultrasonic signal that is lower than the second preset signal threshold. The accuracy of liquid level detection is improved, thereby improving the accuracy of apparent volume measurement.

[0017] In some embodiments, the first preset signal threshold is smaller than the second preset signal threshold. By setting the first preset signal threshold to be smaller than the second preset signal threshold, the frequencies corresponding to the first ultrasonic wave and the second ultrasonic wave are adapted to improve the accuracy of liquid surface contour image detection.

[0018] The embodiment of the third aspect of the present application provides an apparent volume measurement device, including: a first acquisition module, a second acquisition module and a determination module. The first acquisition module is configured to acquire a first ultrasonic signal of a measuring container containing liquid before the sample to be tested is placed; wherein the liquid is an ultrasonic transmission medium. The second acquisition module is configured to acquire a second ultrasonic signal of the measuring container after the sample to be tested is placed. The determination module is configured to determine a first liquid surface contour image of the liquid surface according to the first ultrasonic signal, determine a second liquid surface contour image of the liquid surface according to the second ultrasonic signal, and determine the apparent volume of the sample to be tested through the first liquid surface contour image and the second liquid surface contour image.

[0019] An embodiment of the fourth aspect of the present application provides a computing device, comprising at least one processor; and at least one memory communicatively connected to the at least one processor, wherein the at least one memory stores instructions, which, when executed individually or collectively by the at least one processor, enable the computing device to execute the method described in the above embodiment.

[0020] An embodiment of the fifth aspect of the present application provides a computer-readable storage medium storing instructions, which, when executed individually or collectively by one or more processors of a computing device, enable the computing device to execute the method described in the above embodiment.

[0021] An embodiment of the sixth aspect of the present application provides a computer program product, comprising instructions, which, when executed individually or collectively by one or more processors of a computing device, cause the computing device to execute the method described in the above embodiment.

[0022] The above description is only an overview of the technical solution of the present application. In order to more clearly understand the technical means of the present application, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In the accompanying drawings, unless otherwise specified, the same reference numerals throughout the multiple drawings represent the same or similar parts or elements. These drawings are not necessarily drawn to scale. It should be understood that these drawings only depict some embodiments disclosed in the present application and should not be regarded as limiting the scope of the present application.

[0024] Figure 1 A schematic diagram of the exploded structure of an apparent volume measurement device according to some embodiments of the present application;

[0025] Figure 2 A schematic diagram of the apparent volume measurement principle of some embodiments of the present application;

[0026] Figure 3 A schematic cross-sectional view of an apparent volume measurement device according to some embodiments of the present application;

[0027] Figure 4 A schematic flow chart of a method for measuring apparent volume according to some embodiments of the present application;

[0028] Figure 5 This is a structural block diagram of an apparent volume measurement device according to some embodiments of the present application.

[0029] Description of reference numerals:

[0030] 100. Apparent volume measuring device

[0031] 10. Measuring container; 11. Container body; 12. Liquid filling port; 13. Inlet for the sample to be tested; 14. Branch pipe;

[0032] 20. Ultrasonic excitation assembly; 21. Ultrasonic excitation unit; 22. First wedge;

[0033] 30. Ultrasonic receiving assembly; 31. Ultrasonic receiving unit; 32. Probe body; 33. Second wedge;

[0034] 40. Excitation controller;

[0035] 200. Sample to be tested;

[0036] 300, liquid;

[0037] 400. Apparent volume measuring equipment;

[0038] 401, a first acquisition module; 402, a second acquisition module; 403, a determination module. DETAILED DESCRIPTION

[0039] The following embodiments of the technical solution of the present application are described in detail in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present application, and are therefore only used as examples, and cannot be used to limit the scope of protection of the present application.

[0040] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by technicians in the technical field to which this application belongs; the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" in the specification and claims of this application and the above-mentioned figure descriptions and any variations thereof are intended to cover non-exclusive inclusions.

[0041] In the description of the embodiments of the present application, the technical terms "first", "second", etc. are only used to distinguish different objects, and cannot be understood as indicating or implying relative importance or implicitly indicating the number, specific order or primary and secondary relationship of the indicated technical features. In the description of the embodiments of the present application, the meaning of "multiple" is more than two, unless otherwise clearly and specifically defined.

[0042] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0043] In the description of the embodiments of the present application, the term "and / or" is only a description of the association relationship of the associated objects, indicating that there may be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship.

[0044] In the description of the embodiments of the present application, the term "multiple" refers to more than two (including two). Similarly, "multiple groups" refers to more than two groups (including two groups), and "multiple pieces" refers to more than two pieces (including two pieces).

[0045] In the description of the embodiments of the present application, the technical terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, which are only for the convenience of describing the embodiments of the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the embodiments of the present application.

[0046] In the description of the embodiments of the present application, unless otherwise clearly specified and limited, technical terms such as "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the internal connection of two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0047] At present, judging from the development of the market situation, the application of batteries is becoming more and more extensive. Batteries are not only used in energy storage power systems such as hydropower, thermal power, wind power and solar power stations, but also widely used in electric vehicles such as electric bicycles, electric motorcycles, electric cars, as well as aerospace and other fields. With the continuous expansion of battery application fields, its market demand is also constantly expanding.

[0048] Solid-state batteries have the advantages of high energy density and good safety, and are one of the development directions of battery technology. In the process of solid-state battery production, it is necessary to test the degree of densification of solid-state batteries. The degree of densification test involves the determination of the apparent volume of solid-state batteries. The porosity of solid-state batteries can be calculated through the apparent volume to detect the degree of densification of solid-state batteries. For irregular parts, it is difficult to calculate the apparent volume by measuring the size, resulting in large errors in the measurement results of the apparent volume, which in turn leads to poor accuracy in the degree of densification test results of solid-state batteries.

[0049] Based on the above considerations, in order to solve the problem of poor accuracy in apparent volume measurement, an apparent volume measurement device, method and equipment are designed. The apparent volume measurement device includes: a measuring container, an ultrasonic excitation component, an ultrasonic receiving component and a processor. The measuring container is used to hold the sample to be tested and the liquid, and the liquid is an ultrasonic transmission medium. The ultrasonic excitation component is used to emit ultrasonic waves to the measuring container, the ultrasonic receiving component is used to receive the ultrasonic signal of the ultrasonic wave passing through the measuring container, and the processor is used to determine the first liquid surface contour image of the liquid surface according to the first ultrasonic signal obtained by the ultrasonic receiving component before the sample to be tested is placed in the measuring container, and determine the second liquid surface contour image of the liquid surface according to the second ultrasonic signal obtained after the sample to be tested is placed in the measuring container, and determine the apparent volume of the sample to be tested through the first liquid surface contour image and the second liquid surface contour image; wherein, the ultrasonic frequency corresponding to the first ultrasonic signal is lower than the ultrasonic frequency corresponding to the second ultrasonic signal.

[0050] By placing the sample to be tested into the liquid, the sample to be tested will displace a part of the liquid, that is, the liquid level will rise, and the contour image of the liquid surface is obtained by using ultrasonic signals, thereby detecting the change in the liquid level, and thus obtaining the apparent volume of the sample to be tested, which can meet the measurement requirements of irregularly shaped samples to be tested, and the ultrasonic signal imaged after the sample is placed has a higher ultrasonic frequency, which improves the image resolution and reduces the interference of the sample to be tested on the liquid level measurement, thereby improving the accuracy of the liquid level measurement. Compared with the method of calculating the apparent volume by measuring the size, the accuracy of the apparent volume measurement is improved.

[0051] The apparent volume measurement device, method and equipment disclosed in the embodiments of the present application can be used for, but not limited to, measuring the apparent volume of solid-state batteries, and can also be used for measuring the apparent volume of other samples.

[0052] Combination Figure 1 and Figure 2 As shown, Figure 1 This is a schematic diagram of the exploded structure of the apparent volume measurement device in some embodiments of the present application. Figure 2 Schematic diagram of the apparent volume measurement principle of some embodiments of the present application.

[0053] The embodiment of the present application provides an apparent volume measuring device 100, comprising: a measuring container 10, an ultrasonic excitation component 20, an ultrasonic receiving component 30 and a processor. The measuring container 10 is used to hold a sample 200 to be tested and a liquid 300, and the liquid 300 is an ultrasonic transmission medium. The ultrasonic excitation component 20 is used to emit ultrasonic waves to the measuring container 10, and the ultrasonic receiving component 30 is used to receive ultrasonic signals of the ultrasonic waves passing through the measuring container 10. The processor is used to determine a first liquid surface contour image of the liquid surface according to a first ultrasonic signal obtained by the ultrasonic receiving component 30 before the sample 200 to be tested is placed in the measuring container 10, and to determine a second liquid surface contour image of the liquid surface according to a second ultrasonic signal obtained after the sample 200 to be tested is placed in the measuring container 10, and determine the apparent volume of the sample 200 to be tested by the first liquid surface contour image and the second liquid surface contour image; wherein the ultrasonic frequency corresponding to the first ultrasonic signal is lower than the ultrasonic frequency corresponding to the second ultrasonic signal.

[0054] The measuring container 10 is a device with a certain volume, which can accommodate the sample 200 to be tested and a certain amount of liquid 300, and allows the sample 200 to be completely immersed in the liquid 300. The liquid 300 is an ultrasonic transmission medium, and it is understood that ultrasonic waves can propagate in the liquid 300.

[0055] In some embodiments, the liquid 300 may be paraffin liquid, cellulose acetate liquid, or polyacrylonitrile liquid, etc. Paraffin, cellulose acetate, or polyacrylonitrile is heated to a temperature above the melting point of each to make it liquid. For example, paraffin is heated to a temperature greater than or equal to 100 degrees Celsius and less than or equal to 130 degrees Celsius to obtain paraffin liquid, which may be heated to 100 degrees Celsius, 110 degrees Celsius, 120 degrees Celsius, or 130 degrees Celsius. The paraffin liquid thus obtained is used for measuring the apparent volume.

[0056] The ultrasonic excitation component 20 refers to a component capable of emitting ultrasonic waves. The ultrasonic excitation component 20 emits ultrasonic waves toward the measuring container 10 . The ultrasonic waves can pass through the measuring container 10 and the liquid 300 and the sample 200 to be measured in the measuring container 10 .

[0057] The ultrasonic receiving component 30 refers to a component capable of receiving ultrasonic waves passing through the measuring container 10 and obtaining ultrasonic signals based on the received ultrasonic waves. The ultrasonic signals may be any one or more of analog signals, digital signals and grayscale converted signals.

[0058] A processor may be a device with computing capabilities, such as a central processing unit (CPU), a graphics processing unit (GPU), a field-programmable gate array (FPGA), and an application-specific integrated circuit (ASIC), or any combination thereof.

[0059] In some embodiments, the apparent volume can be measured in such a way that the first ultrasonic signal and the second ultrasonic signal are grayscale converted signals, and after grayscale processing, the measuring container, the sample to be tested and the liquid can be distinguished, thereby extracting the image of the liquid 300. The processor obtains a first liquid surface contour image of the liquid 300 before the sample to be tested 200 is placed according to the first ultrasonic signal, and obtains a second liquid surface contour image of the liquid 300 after the sample to be tested 200 is placed according to the second ultrasonic signal, and determines the first liquid surface height from the first liquid surface contour image, and determines the second liquid surface height from the second liquid surface contour image. The liquid surface will rise after the sample to be tested is placed, that is, there is a difference between the first liquid surface height and the second liquid surface height, and the cross-sectional area of ​​the measuring container is constant. The volume corresponding to the part of the liquid whose liquid surface rises can be calculated by multiplying the difference by the cross-sectional area, and the volume is the apparent volume of the sample to be tested 200.

[0060] Among them, the first ultrasonic signal is obtained after the first ultrasonic wave passes through the measuring container 10 and the liquid 300. The objects through which the first ultrasonic wave passes are the measuring container 10 and the liquid 300. Since the measuring container 10 and the liquid 300 are different substances, the attenuation degree and speed of the ultrasonic wave propagating in these two substances are different. Therefore, the first ultrasonic signal can be imaged to distinguish the measuring container 10 and the liquid 300, thereby obtaining the first liquid level height of the liquid 300. The frequency of the first ultrasonic signal is defined as the first frequency.

[0061] Similarly, the second ultrasonic signal is obtained after the second ultrasonic wave passes through the measuring container 10, the liquid 300 and the sample 200 to be tested. The objects passed by the first ultrasonic wave are the measuring container 10, the liquid 300 and the sample 200 to be tested. Since the measuring container 10, the liquid 300 and the sample 200 to be tested are different substances, the attenuation degree and speed of the ultrasonic wave propagating in these three substances are different. Therefore, the second ultrasonic signal can be imaged to distinguish the measuring container 10, the liquid 300 and the sample 200 to be tested, thereby obtaining the second liquid level height of the liquid 300. The frequency of the second ultrasonic signal is defined as the second frequency.

[0062] Compared with the first ultrasonic wave, the second ultrasonic wave needs to penetrate the sample to be tested 200, that is, the sample to be tested needs to be imaged using the second ultrasonic signal. Compared with imaging using the first ultrasonic signal, more objects are imaged using the second ultrasonic signal. By setting the second frequency higher than the first frequency, the resolution of the second ultrasonic signal imaging is improved, thereby improving the imaging quality, which is conducive to distinguishing the measuring container, the sample to be tested and the liquid from the image, so as to reduce the interference of the sample to be tested on the liquid level measurement of the liquid, thereby improving the accuracy of the liquid level measurement.

[0063] In some embodiments, the first frequency ranges from greater than or equal to 5 MHz to less than or equal to 35 MHz, and the second frequency ranges from greater than or equal to 10 MHz to less than or equal to 50 MHz.

[0064] By placing the sample 200 to be tested into the liquid 300, the sample 200 to be tested will displace a portion of the liquid, that is, the liquid level of the liquid 300 will rise, and the contour image of the liquid level is obtained by using ultrasonic signals, thereby detecting the change in the liquid level, and thus the apparent volume of the sample 200 to be tested can be obtained, which can meet the measurement requirements of the irregularly shaped sample 200 to be tested, and the ultrasonic frequency corresponding to the ultrasonic signal imaged after the sample is placed is higher, which improves the resolution of the image, reduces the interference of the sample to be tested on the liquid level measurement, and thus improves the accuracy of the liquid level measurement. Compared with the method of calculating the apparent volume by measuring the size, the accuracy of the apparent volume measurement is improved.

[0065] like Figure 3 As shown, Figure 3 Schematic diagram of the cross-sectional structure of the apparent volume measurement device of some embodiments of the present application. According to some embodiments of the present application, the apparent volume measurement device 100 further includes: an excitation controller 40 connected to the ultrasonic excitation component 20 signal. The excitation controller 40 is configured to control the ultrasonic excitation component 20 to emit a first ultrasonic wave before the sample 200 to be tested is placed in the measuring container 10, and to control the ultrasonic excitation component 20 to emit a second ultrasonic wave after the sample 200 to be tested is placed in the measuring container 10.

[0066] The excitation controller 40 is used to control the frequency of the ultrasonic wave so that the first ultrasonic wave and the second ultrasonic wave have good penetrability to penetrate the measuring container 10 , the liquid 300 and the sample 200 to be measured, so as to be received by the ultrasonic receiving component 30 .

[0067] The frequency of the ultrasonic wave is controlled by the excitation controller 40 so that the first ultrasonic wave and the second ultrasonic wave can have good penetrability, thereby improving the accuracy of measuring the apparent volume of the sample to be tested.

[0068] like Figure 3As shown, according to some embodiments of the present application, the ultrasonic excitation assembly 20 includes a plurality of ultrasonic excitation units 21 , and the plurality of ultrasonic excitation units 21 are arranged at intervals along the circumference of the measurement container 10 .

[0069] The plurality of ultrasonic excitation units 21 are respectively connected to the excitation controller 40 by signals, and the excitation controller 40 can control the plurality of ultrasonic excitation units 21 to simultaneously emit ultrasonic waves to the measuring container 10 at a certain frequency.

[0070] In some embodiments, the ultrasonic excitation assembly 20 further includes a first wedge block 22 , and the plurality of ultrasonic excitation units 21 are fixed on the first wedge block 22 . The first wedge block 22 is in contact with the surface of the measurement container 10 .

[0071] By providing a plurality of ultrasonic excitation units 21 spaced apart circumferentially along the measuring container 10, the coverage area of ​​the ultrasonic excitation assembly 20 relative to the measuring container 10 is increased, so that ultrasonic waves can be emitted toward the measuring container 10 from multiple angles, further improving the stability and accuracy of the apparent volume measurement.

[0072] like Figure 3 As shown, according to some embodiments of the present application, the ultrasonic receiving assembly 30 includes a plurality of ultrasonic receiving units 31 , and the plurality of ultrasonic receiving units 31 are arranged at intervals along the circumference of the measuring container 10 .

[0073] In some embodiments, the ultrasonic receiving assembly 30 further includes a probe body 32 and a second wedge block 33 , a plurality of ultrasonic receiving units 31 are fixed between the probe body 32 and the second wedge block 33 , and the second wedge block 33 is in contact with the surface of the measuring container 10 .

[0074] By providing a plurality of ultrasonic receiving units 31 spaced apart circumferentially along the measuring container 10, the coverage area of ​​the ultrasonic receiving component 30 relative to the measuring container 10 is increased, so that the ultrasonic receiving component 30 can fully receive ultrasonic waves passing through the measuring container 10 to obtain accurate ultrasonic signals, thereby further improving the stability and accuracy of the apparent volume measurement.

[0075] Combination Figure 1 and Figure 3 As shown, according to some embodiments of the present application, the ultrasonic excitation component 20 and the ultrasonic receiving component 30 are respectively located on opposite sides of the measuring container 10 and are respectively attached to the outer surface of the measuring container 10 .

[0076] The ultrasonic excitation component 20 and the ultrasonic receiving component 30 are respectively located on two opposite sides of the measuring container 10 , that is, the ultrasonic excitation component 20 , the measuring container 10 and the ultrasonic receiving component 30 are arranged in sequence along the propagation direction of the ultrasonic wave.

[0077] In some embodiments, the cross section of the measuring container 10 is circular, and the areas covered by the ultrasonic excitation component 20 and the ultrasonic receiving component 30 on the measuring container 10 have a central angle of 180 degrees relative to the measuring container 10 .

[0078] By arranging the ultrasonic excitation component 20 and the ultrasonic receiving component 30 on opposite sides of the measuring container 10, the ultrasonic wave can pass through the measuring container 10 and be received by the ultrasonic receiving component 30. At the same time, the ultrasonic excitation component 20 and the ultrasonic receiving component 30 are respectively attached to the outer surface of the measuring container 10, thereby reducing the loss of the ultrasonic wave during propagation.

[0079] like Figure 1 As shown, according to some embodiments of the present application, the measuring container 10 includes a container body 11, a liquid injection port 12 connected to the container body 11, and a sample inlet 13 connected to the container body 11 and spaced apart from the liquid injection port 12, and the sample inlet 13 is used to place the sample 200 to be tested.

[0080] In some embodiments, the container body 11 is cylindrical, the liquid injection port 12 is configured as an opening at one end of the container body 11, the middle of the container body 11 is connected to one end of the branch pipe 14, and the sample inlet 13 is configured as an opening at the other end of the branch pipe 14. The axis of the branch pipe 14 is arranged at an acute angle to the axis of the container body 11.

[0081] By providing the liquid injection port 12 and the sample introduction port 13 which are independent of each other, it is convenient to put the sample 200 into the measuring container 10 .

[0082] According to some embodiments of the present application, the viscosity of the liquid 300 is greater than or equal to 3000 milliPascal·second and less than or equal to 10000 milliPascal·second.

[0083] The viscosity of the liquid 300 is greater than or equal to 3000 milliPascal·second and less than or equal to 10000 milliPascal·second, that is, the viscosity of the liquid 300 is relatively large. When the sample 200 to be tested is placed in the liquid 300, the liquid 300 is not easy to enter the gaps in the sample 200 to be tested. Therefore, the apparent volume measurement result obtained by measuring the volume of the liquid displaced by the sample 200 to be tested is more accurate.

[0084] By selecting the liquid 300 with a relatively large viscosity, the phenomenon of the liquid 300 entering into the gaps of the sample 200 to be tested is reduced, thereby improving the accuracy of the apparent volume measurement.

[0085] like Figure 4 As shown, an embodiment of the second aspect of the present application provides an apparent volume measurement method, comprising:

[0086] Step 410: Obtain a first ultrasonic signal from a measuring container containing liquid before the sample to be tested is placed therein.

[0087] Step 420, obtaining a second ultrasonic signal from the measuring container after the sample to be tested is placed therein.

[0088] Step 430, determine a first liquid surface contour image of the liquid according to the first ultrasonic signal, determine a second liquid surface contour image of the liquid according to the second ultrasonic signal, and determine the apparent volume of the sample to be tested through the first liquid surface contour image and the second liquid surface contour image.

[0089] The liquid is an ultrasonic transmission medium, and the ultrasonic frequency corresponding to the first ultrasonic signal is lower than the ultrasonic frequency corresponding to the second ultrasonic signal.

[0090] The apparent volume measurement method can be executed by a controller of the apparent volume measurement device or another computer device. The following takes the controller of the apparent volume measurement device as an example to specifically describe the method steps of this embodiment.

[0091] In step 410, the controller may issue a control instruction to the excitation controller, and the excitation controller controls the ultrasonic excitation component to emit a first ultrasonic wave to the measuring container. The first ultrasonic wave passes through the measuring container and the liquid and is received by the ultrasonic receiving component. The ultrasonic receiving component obtains a first ultrasonic signal based on the received ultrasonic wave. The first ultrasonic signal may be any one or more of an analog signal, a digital signal, and a grayscale-converted signal.

[0092] In step 420, the controller may issue a control instruction to the excitation controller, and the excitation controller controls the ultrasonic excitation component to emit a second ultrasonic wave to the measuring container, and the second ultrasonic wave passes through the measuring container, the liquid and the sample to be measured and is received by the ultrasonic receiving component.

[0093] In step 430, the controller may issue a processing instruction to the processor, and the processor processes the first ultrasonic signal and the second ultrasonic signal to obtain the apparent volume of the sample to be tested.

[0094] In some embodiments, the method of obtaining the apparent volume of the sample to be tested from the first ultrasonic signal and the second ultrasonic signal can be that the first ultrasonic signal and the second ultrasonic signal are grayscale converted signals, and after grayscale processing, the measuring container, the sample to be tested and the liquid can be distinguished, thereby extracting the image of the liquid. The processor obtains a first liquid surface contour image of the liquid before the sample to be tested is placed according to the first ultrasonic signal, and obtains a second liquid surface contour image of the liquid after the sample to be tested is placed according to the second ultrasonic signal. The first liquid surface height is determined by the first liquid surface contour image, and the second liquid surface height is determined by the second liquid surface contour image. After the sample to be tested is placed, the liquid surface will rise, that is, there is a difference between the first liquid surface height and the second liquid surface height. The cross-sectional area of ​​the measuring container is constant, and the volume corresponding to the part of the liquid whose liquid surface rises can be calculated by multiplying the difference by the cross-sectional area. This volume is the apparent volume of the sample to be tested.

[0095] Among them, the first ultrasonic signal is obtained after the first ultrasonic wave passes through the measuring container 10 and the liquid 300. The objects through which the first ultrasonic wave passes are the measuring container 10 and the liquid 300. Since the measuring container 10 and the liquid 300 are different substances, the attenuation degree and speed of the ultrasonic wave propagating in these two substances are different. Therefore, the first ultrasonic signal can be imaged to distinguish the measuring container 10 and the liquid 300, thereby obtaining the first liquid level height of the liquid 300. The frequency of the first ultrasonic signal is defined as the first frequency.

[0096] Similarly, the second ultrasonic signal is obtained after the second ultrasonic wave passes through the measuring container 10, the liquid 300 and the sample 200 to be tested. The objects passed by the first ultrasonic wave are the measuring container 10, the liquid 300 and the sample 200 to be tested. Since the measuring container 10, the liquid 300 and the sample 200 to be tested are different substances, the attenuation degree and speed of the ultrasonic wave propagating in these three substances are different. Therefore, the second ultrasonic signal can be imaged to distinguish the measuring container 10, the liquid 300 and the sample 200 to be tested, thereby obtaining the second liquid level height of the liquid 300. The frequency of the second ultrasonic signal is defined as the second frequency.

[0097] Compared with the first ultrasonic wave, the second ultrasonic wave needs to penetrate the sample to be tested 200, that is, the sample to be tested needs to be imaged using the second ultrasonic signal. Compared with imaging using the first ultrasonic signal, more objects are imaged using the second ultrasonic signal. By setting the second frequency higher than the first frequency, the resolution of the second ultrasonic signal imaging is improved, thereby improving the imaging quality, which is conducive to distinguishing the measuring container, the sample to be tested and the liquid from the image, so as to reduce the interference of the sample to be tested on the liquid level measurement of the liquid, thereby improving the accuracy of the liquid level measurement.

[0098] In some embodiments, the first frequency ranges from greater than or equal to 5 MHz to less than or equal to 35 MHz, and the second frequency ranges from greater than or equal to 10 MHz to less than or equal to 50 MHz.

[0099] By using ultrasonic signals to obtain the contour image of the liquid surface, the change in the liquid level is detected, so that the apparent volume of the sample to be tested can be obtained, which can meet the measurement requirements of irregularly shaped samples to be tested. After the sample is placed, the ultrasonic signal corresponding to the imaging has a higher ultrasonic frequency, which improves the image resolution and reduces the interference of the sample to be tested on the liquid level measurement, thereby improving the accuracy of the liquid level measurement. Compared with the method of calculating the apparent volume by measuring the size, the accuracy of the apparent volume measurement is improved.

[0100] According to some embodiments of the present application, step 430 includes: taking the liquid level at the preset contour position in the first liquid level contour image as the first liquid level height, taking the liquid level at the preset contour position in the second liquid level contour image as the second liquid level height, and determining the apparent volume of the sample to be tested based on the difference between the first liquid level height and the second liquid level height.

[0101] Since the measuring container, liquid and sample to be tested are different substances, the attenuation degree and speed of ultrasonic wave propagation in these three substances are different. Ultrasonic signal imaging is used to distinguish the measuring container, liquid and sample to be tested, so as to extract the image of the liquid and distinguish the liquid surface contour image on the liquid image. The preset contour position is the corresponding point on the liquid surface contour image, and the liquid level height is determined at this point.

[0102] By using ultrasonic signals to image the liquid surface contour and determine the liquid level from the liquid surface contour, the accuracy of liquid level detection is improved, thereby improving the accuracy of apparent volume measurement.

[0103] like Figure 2 As shown, according to some embodiments of the present application, the preset contour position is the lowest liquid level position, the highest liquid level position, or the liquid level contour position corresponding to any specified position at the bottom of the measuring container.

[0104] The preset contour position is used as a reference point for determining the first liquid level height and the second liquid level height, and the reference point for determining the first liquid level height and the reference point for determining the second liquid level height are determined so that the first liquid level height and the second liquid level height are determined by a unified reference point.

[0105] In some embodiments, the liquid surface is concave, and correspondingly, the liquid surface contour is arc-shaped. The lowest position m1 on the liquid surface contour can be selected as the preset contour position, or the highest position m2 on the liquid surface contour can be selected as the preset contour position, or the middle position m3 between the lowest position m1 and the highest position m2 can be selected as the preset contour position. The middle position m3 is selected by taking any specified position at the bottom of the measuring container as a reference point M, and drawing a straight line parallel to the vertical direction through the reference point M, and the point where the straight line intersects with the liquid surface contour is the middle position m3.

[0106] By selecting a preset contour position as a unified reference point to determine the first liquid level height and the second liquid level height, the accuracy of the first liquid level height and the second liquid level height detection is improved, thereby improving the accuracy of the apparent volume measurement.

[0107] According to some embodiments of the present application, determining a first liquid level contour image of a liquid level according to a first ultrasonic signal includes: determining the first liquid level contour image based on a portion of the first ultrasonic signal that is higher than a first preset signal threshold, and the remaining portion of the first ultrasonic signal that is lower than the first preset signal threshold. Determining a second liquid level contour image of a liquid level according to a second ultrasonic signal includes: determining a second liquid level contour image based on a portion of the second ultrasonic signal that is higher than a second preset signal threshold, and the remaining portion of the second ultrasonic signal that is lower than the second preset signal threshold.

[0108] In the process of imaging using the first ultrasonic signal, the first liquid level contour image is determined by the partial signal that is higher than the first preset signal threshold, that is, the pixel points of the partial signal that is higher than the first preset signal threshold are set to white, and correspondingly, the pixel points of the remaining partial signal that is lower than the first preset signal threshold are set to black, so that the first liquid level contour image presents an obvious black and white effect, which is more conducive to extracting the contour line in the image, thereby obtaining an accurate first liquid level contour image.

[0109] Similarly, in the process of imaging using the second ultrasonic signal, the second liquid level contour image is determined by the partial signal that is higher than the second preset signal threshold, that is, the pixel points of the partial signal that is higher than the second preset signal threshold are set to white, and correspondingly, the pixel points of the remaining partial signal that is lower than the second preset signal threshold are set to black, so that the second liquid level contour image presents an obvious black and white effect, which is more conducive to extracting the contour lines in the image, thereby obtaining an accurate second liquid level contour image.

[0110] In some embodiments, the value range of the first preset signal threshold and the second preset signal threshold is greater than or equal to 90 and less than or equal to 125.

[0111] By processing the liquid surface contour image using the first preset signal threshold and the second preset signal threshold, a more accurate liquid surface contour image can be obtained, thereby improving the accuracy of liquid surface height detection, and further improving the accuracy of apparent volume measurement.

[0112] According to some embodiments of the present application, the first preset signal threshold is lower than the second preset signal threshold.

[0113] In some embodiments, the objects imaged by the first ultrasonic signal are the measuring container and the liquid, and the objects imaged by the second ultrasonic signal are the measuring container, the liquid and the sample to be measured. The second frequency corresponding to the second ultrasonic signal is higher, so that the second ultrasonic signal has good imaging quality. Accordingly, the second preset signal threshold corresponding to the second ultrasonic signal is also higher.

[0114] By setting the first preset signal threshold to be smaller than the second preset signal threshold, the ultrasonic frequencies corresponding to the first ultrasonic signal and the second ultrasonic signal are adapted to improve the accuracy of liquid surface contour image detection.

[0115] like Figure 5 As shown, Figure 5 This is a structural block diagram of an apparent volume measurement device according to some embodiments of the present application.

[0116] The embodiment of the present application provides an apparent volume measurement device 400, comprising a first acquisition module 401, a second acquisition module 402 and a determination module 403. The first acquisition module 401 is configured to acquire a first ultrasonic signal of a measuring container containing a liquid before the sample to be tested is placed therein; wherein the liquid is an ultrasonic transmission medium. The second acquisition module 402 is configured to acquire a second ultrasonic signal of the measuring container after the sample to be tested is placed therein. The determination module 403 is configured to determine a first liquid surface contour image of the liquid surface according to the first ultrasonic signal, determine a second liquid surface contour image of the liquid surface according to the second ultrasonic signal, and determine the apparent volume of the sample to be tested through the first liquid surface contour image and the second liquid surface contour image.

[0117] In some embodiments, the determination module 403 is further configured to use the liquid level at the preset contour position in the first liquid level contour image as the first liquid level, and use the liquid level at the preset contour position in the second liquid level contour image as the second liquid level.

[0118] In some other embodiments, the determination module 403 is further configured to determine a first liquid level contour image based on a portion of the first ultrasonic signal that is higher than a first preset signal threshold and a remaining portion of the first ultrasonic signal that is lower than the first preset signal threshold, and to determine a second liquid level contour image based on a portion of the second ultrasonic signal that is higher than a second preset signal threshold and a remaining portion of the second ultrasonic signal that is lower than the second preset signal threshold.

[0119] The apparent volume measurement device 400 of this embodiment can meet the measurement requirements of irregularly shaped samples to be tested and improve the accuracy of apparent volume measurement.

[0120] A fourth aspect of an embodiment of the present application provides a computing device, comprising at least one processor; and at least one memory communicatively connected to the at least one processor, wherein the at least one memory stores instructions that, when executed individually or collectively by the at least one processor, enable the computing device to execute the method described in the above embodiment.

[0121] The various embodiments described above in the present application can be implemented in a digital electronic circuit system, an integrated circuit system, a field programmable gate array (FPGA), an application specific integrated circuit (ASIC), an application specific standard product (ASSP), a system on a chip (SOC), a load programmable logic device (CPLD), computer hardware, firmware, software, and / or a combination thereof. These various embodiments may include: being implemented in one or more computer programs, which may be executed and / or interpreted on a programmable system including at least one programmable processor, which may be a dedicated or general programmable processor, which may receive data and instructions from a storage system, at least one input device, and at least one output device, and transmit data and instructions to the storage system, the at least one input device, and the at least one output device.

[0122] A fifth aspect of an embodiment of the present application provides a computer-readable storage medium storing instructions, which, when executed individually or collectively by one or more processors of a computing device, cause the computing device to execute the method described in the above embodiment.

[0123] Computer readable media may be tangible media that may contain or store programs for use by or in conjunction with an instruction execution system, device, or equipment. Machine readable media may be machine readable signal media or machine readable storage media. Machine readable media may include, but are not limited to, electronic, magnetic, optical, electromagnetic, infrared, or semiconductor systems, devices, or equipment, or any suitable combination of the foregoing. More specific examples of machine readable storage media may include electrical connections based on one or more lines, portable computer disks, hard disks, random access memories (RAM), read-only memories (ROM), erasable programmable read-only memories (EPROM or flash memory), optical fibers, portable compact disk read-only memories (CD-ROM), optical storage devices, magnetic storage devices, or any suitable combination of the foregoing.

[0124] A sixth aspect of an embodiment of the present application provides a computer program product, comprising instructions, which, when executed individually or collectively by one or more processors of a computing device, cause the computing device to execute the method described in the above embodiment.

[0125] The embodiments of the present application are further described in detail below in conjunction with a specific implementation method.

[0126] The apparent volume measuring device 100 includes: a measuring container 10, an ultrasonic excitation component 20, an ultrasonic receiving component 30, an excitation controller 40 and a processor.

[0127] The measuring container 10 is located between the ultrasonic excitation component 20 and the ultrasonic receiving component 30, and is used to contain the sample 200 to be tested and the liquid 300, wherein the liquid 300 is an ultrasonic transmission medium. The measuring container 10 includes a container body 11 and a branch pipe 14 which are connected to each other, wherein the opening at one end of the container body 11 is configured as a liquid injection port 12, and the opening at one end of the branch pipe 14 is configured as a sample inlet 13 to be tested.

[0128] The ultrasonic excitation component 20 is used to emit ultrasonic waves to the measuring container 10. The ultrasonic excitation component 20 includes a first wedge block 22 and a plurality of ultrasonic excitation units 21 arranged along the circumference of the measuring container. The plurality of ultrasonic excitation units 21 are fixed on the first wedge block 22. The first wedge block 22 is in contact with the outer surface of the measuring container 10. The plurality of ultrasonic excitation units 21 are connected to the excitation controller 40 by signal. The excitation controller 40 is used to control the frequency of the ultrasonic waves emitted by the ultrasonic excitation units 21.

[0129] The ultrasonic receiving component 30 is used to receive ultrasonic signals transmitted through the measuring container 10. The ultrasonic receiving component 30 includes a probe body 32, a second wedge block 33 and a plurality of ultrasonic receiving units 31 arranged circumferentially along the measuring container. The second wedge block 33 is in contact with the outer surface of the measuring container 10, and the plurality of ultrasonic receiving units 31 are fixed between the probe body 32 and the second wedge block 33.

[0130] The processor is used to determine the apparent volume of the sample 200 according to the first ultrasonic signal acquired by the ultrasonic receiving component 30 before the sample 200 is placed in the measuring container 10 and the second ultrasonic signal acquired after the sample 200 is placed in the measuring container 10.

[0131] The measurement step of the apparent volume is to pre-add paraffin liquid into the measuring container 10, and the viscosity of the paraffin liquid is 7000 milliPascal seconds. The first ultrasonic wave of 10MHz is emitted by the ultrasonic excitation component 20 to perform the initial imaging of the paraffin liquid. During the image processing, the pixel points of the partial signal above the first preset signal threshold are set to white, and correspondingly, the pixel points of the remaining partial signal below the first preset signal threshold are set to black, so that the first liquid surface contour image presents an obvious black and white effect, which is more conducive to extracting the contour line in the image, thereby obtaining an accurate first liquid surface contour image, and obtaining the first liquid surface height from the first liquid surface contour image, which is recorded as H1.

[0132] The sample 200 to be tested is added into the measuring container 10, and the liquid level of the paraffin liquid rises. The second ultrasonic wave of 20 MHz is emitted by the ultrasonic excitation component 20 to perform secondary imaging on the paraffin liquid. During image processing, the pixel points of the partial signal above the second preset signal threshold are set to white, and correspondingly, the pixel points of the remaining partial signal below the second preset signal threshold are set to black, so that the second liquid level contour image presents an obvious black and white effect, which is more conducive to extracting the contour line in the image, thereby obtaining an accurate second liquid level contour image, and the second liquid level height is obtained from the second liquid level contour image, which is recorded as H2.

[0133] The height difference of the liquid level H=H2-H1, the cross-sectional area of ​​the measuring container 10 is constant, which is S, and then the apparent volume V of the sample 200 to be measured is V=H·S.

[0134] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them; although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein by equivalents; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application, and they should all be included in the scope of the claims and specification of the present application. In particular, as long as there is no structural conflict, the various technical features mentioned in the various embodiments can be combined in any way. The present application is not limited to the specific embodiments disclosed herein, but includes all technical solutions that fall within the scope of the claims.

Claims

1. An apparent volume measuring device, characterized in that: include: A measuring container, used for containing a sample to be measured and a liquid, wherein the liquid is an ultrasonic transmission medium; An ultrasonic excitation component, used for emitting ultrasonic waves to the measuring container; An ultrasonic receiving component, used for receiving an ultrasonic signal of the ultrasonic wave passing through the measuring container; the ultrasonic excitation component and the ultrasonic receiving component are respectively located on two opposite sides of the measuring container; a processor, configured to determine a first liquid surface contour image of the liquid surface of the liquid according to a first ultrasonic signal acquired by the ultrasonic receiving component before the sample to be tested is placed in the measuring container, and to determine a second liquid surface contour image of the liquid surface of the liquid according to a second ultrasonic signal acquired after the sample to be tested is placed in the measuring container, and to determine an apparent volume of the sample to be tested through the first liquid surface contour image and the second liquid surface contour image; and an excitation controller connected to the ultrasonic excitation component by signal, the excitation controller being used to control the frequency of the ultrasonic wave; the excitation controller being configured to control the ultrasonic excitation component to emit a first ultrasonic wave before the sample to be tested is placed in the measuring container, and to control the ultrasonic excitation component to emit a second ultrasonic wave after the sample to be tested is placed in the measuring container; The wave frequency of the first ultrasound wave corresponding to the first ultrasound signal is lower than the wave frequency of the second ultrasound wave corresponding to the second ultrasound signal.

2. The apparent volume measuring device according to claim 1, characterized in that: The ultrasonic excitation component includes a plurality of ultrasonic excitation units; The plurality of ultrasonic excitation units are arranged at intervals along the circumference of the measurement container.

3. The apparent volume measuring device according to claim 1, characterized in that: The ultrasonic receiving assembly includes a plurality of ultrasonic receiving units; the plurality of ultrasonic receiving units are arranged at intervals along the circumference of the measuring container.

4. The apparent volume measuring device according to any one of claims 1 to 3, characterized in that: The ultrasonic excitation component and the ultrasonic receiving component are respectively attached to the outer surface of the measuring container.

5. The apparent volume measuring device according to any one of claims 1 to 3, characterized in that: The measuring container comprises: Container body; a liquid filling port communicated with the container body; and A sample inlet for testing is communicated with the container body and spaced apart from the liquid injection port, and the sample inlet for testing is used for placing the sample to be tested.

6. The apparent volume measuring device according to any one of claims 1 to 3, characterized in that: The viscosity of the liquid is greater than or equal to 3000 mPa·s and less than or equal to 10000 mPa·s.

7. A method for measuring apparent volume, characterized in that: include: Acquire a first ultrasonic signal of a measuring container containing liquid before the sample to be tested is placed therein; Acquire a second ultrasonic signal of the measuring container after the sample to be tested is placed therein; Determine a first liquid surface contour image of the liquid surface according to the first ultrasonic signal, determine a second liquid surface contour image of the liquid surface according to the second ultrasonic signal, and determine the apparent volume of the sample to be tested by using the first liquid surface contour image and the second liquid surface contour image; Wherein, the liquid is an ultrasonic transmission medium, and the ultrasonic frequency corresponding to the first ultrasonic signal is lower than the ultrasonic frequency corresponding to the second ultrasonic signal.

8. The apparent volume measurement method according to claim 7, characterized in that: The method of determining a first liquid surface contour image of the liquid surface according to the first ultrasonic signal, determining a second liquid surface contour image of the liquid surface according to the second ultrasonic signal, and determining the apparent volume of the sample to be tested by using the first liquid surface contour image and the second liquid surface contour image comprises: The liquid level height at the preset contour position in the first liquid level contour image is taken as the first liquid level height; the liquid level height at the preset contour position in the second liquid level contour image is taken as the second liquid level height, and the apparent volume of the sample to be tested is determined based on the difference between the first liquid level height and the second liquid level height.

9. The apparent volume measurement method according to claim 8, characterized in that: The preset contour position is a minimum liquid level position, a maximum liquid level position, or a liquid level contour position corresponding to any specified position at the bottom of the measuring container.

10. The apparent volume measurement method according to claim 9, characterized in that: The step of determining a first liquid level contour image of the liquid level according to the first ultrasonic signal comprises: Determine the first liquid level contour image based on a portion of the first ultrasonic signal that is higher than a first preset signal threshold and a remaining portion of the first ultrasonic signal that is lower than the first preset signal threshold; And wherein, determining a second liquid level contour image of the liquid level according to the second ultrasonic signal comprises: The second liquid level contour image is determined based on a portion of the second ultrasonic signal that is higher than a second preset signal threshold and a remaining portion of the second ultrasonic signal that is lower than the second preset signal threshold.

11. The apparent volume measurement method according to claim 10, characterized in that: The first preset signal threshold is smaller than the second preset signal threshold.

12. An apparent volume measuring device, characterized in that: include: A first acquisition module is configured to acquire a first ultrasonic signal from a measuring container containing a liquid before the sample to be tested is placed therein; wherein the liquid is an ultrasonic transmission medium; A second acquisition module is configured to acquire a second ultrasonic signal of the measuring container after the sample to be tested is placed therein; A determination module is configured to determine a first liquid surface contour image of the liquid surface according to the first ultrasonic signal, determine a second liquid surface contour image of the liquid surface according to the second ultrasonic signal, and determine the apparent volume of the sample to be tested through the first liquid surface contour image and the second liquid surface contour image.

13. A computing device, characterized in that: include: at least one processor; as well as At least one memory is communicatively connected to the at least one processor, the at least one memory stores instructions, and when the instructions are executed by the at least one processor individually or collectively, the computing device performs the method of any one of claims 7 to 11.

14. A computer-readable storage medium, characterized in that: Instructions are stored, which, when executed individually or collectively by one or more processors of a computing device, cause the computing device to perform the method of any one of claims 7 to 11.

15. A computer program product, characterized in that The method comprises instructions which, when executed individually or collectively by one or more processors of a computing device, cause the computing device to perform the method of any one of claims 7 to 11.

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