Irregular solid density measuring device and method based on liquid level height

Abstract

The invention relates to the technical field of density (and volume) measurement of objects, and particularly provides a density measurement device and method for irregular solids based on liquid level height, and the method comprises the following steps: determining a first distance between a distance detection part and a floater part under the condition that a to-be-measured object is not placed; determining a second distance between the distance detection part and the floater part under the condition that the object to be detected is placed in the containing space of the floating container; under the condition that the to-be-detected object is directly placed in the second container, determining a third distance between the distance detection part and the floater part; and determining the density of the object to be measured according to the first distance, the second distance and the third distance. With such a configuration, it is possible to determine the density of an object to be measured having an irregular shape on the basis of the change in the liquid level (the height of the float portion changes with the change in the liquid level).

Description

Technical Field

[0001] This application belongs to the technical field of measuring the density and volume of objects, and particularly relates to a device and method for measuring the density of irregular solids based on the liquid level height. Background Art

[0002] Taking an object with uniform density as an example, it can include an object that is fixedly connected or integrally formed. Taking the integrally formed object as an example, quite a number of objects present an irregular contour shape. Specifically, people's requirements for objects usually include requirements in terms of function and vision. For the former, the object may present a certain irregular contour shape due to factors such as limiting, avoiding, and fitting. For the latter, the object may present a more diverse contour shape due to individual factors of the designer. In this case, the object is more likely to have an irregular contour shape. In addition, due to factors such as processing technology limitations, there will also be a difference between the contour shape of the object and the ideal shape, and this difference will cause a certain degree of uncontrollable difference between the object and the design size, thus showing a certain degree of irregular contour shape.

[0003] Density (and volume) is a basic property of an object and it is necessary to be able to obtain it. In practice, there is a need to quantify the density (and volume) of objects of any shape. During the learning process, the inventor encountered the problem type of measuring the density of solids by the floating and sinking method. The problem-solving idea of this problem type is to determine a fixed density based on the phenomenon that "the change in the liquid level height will occur when the measured solid is in different floating and sinking state positions". Inspired by the problem-solving idea of this problem type, the inventor believes that a reasonable measurement scheme for the density of irregularly shaped objects can be given based on this principle. It should be noted that the irregularly shaped objects mentioned in this application should be understood as irregularly shaped and non-absorbent solids.

[0004] After consulting relevant materials, within the scope of knowledge systems mastered and understandable by the inventor, no structure identical to this application was found. In addition, some of the solutions found have defects such as high structural complexity and room for further improvement in accuracy.

[0005] Therefore, the inventor proposes this application to achieve the measurement of the density (and volume) of solids, especially irregular solids. Summary of the Invention

[0006] In order to at least partly solve the above technical problems and / or at least part of the above technical problems, this application proposes a device and method for measuring the density of irregular solids based on the liquid level height.

[0007] In a first aspect, the present application provides a density measurement device for irregular solids based on liquid level height, the device comprising: (1) a container part, which includes: a first container; and a second container capable of communicating with the first container; (2) a floating part, which includes: a float part capable of floating in the liquid contained in the first container; and a floating container capable of floating in the liquid contained in the second container, and the floating container is formed with a containing space where the object to be measured can be placed; (3) a distance detection component arranged to be able to detect the height change of the float part in the first container.

[0008] With such a configuration, it is possible to determine the density of the object to be measured based on the height change of the float part, and then the volume of the object to be measured can be determined according to actual requirements.

[0009] It can be understood that those skilled in the art can determine to use any reasonable distance detection component according to actual requirements to determine the height change of the float part.

[0010] In addition, those skilled in the art can determine the structural forms of the first container / second container / float part / floating container, the way to achieve communication between the first container and the second container, the structural form of the containing space formed by the floating container, etc. according to actual requirements.

[0011] For the above-mentioned density measurement device for irregular solids based on liquid level height, in a possible implementation manner, the float part includes: a float matrix; and at least one protruding structure arranged on the float matrix.

[0012] With such a configuration, it is possible to improve the stability and uniformity in the horizontal plane of the float part.

[0013] It can be understood that those skilled in the art can determine the structural form, number and the way of arranging on the float matrix of the protruding structure according to actual requirements. Exemplarily, the protruding structure can be a dot structure, a strip structure, a block structure, a plate structure, etc. For example, if the protruding structure is a strip structure, the strip structure is arranged on the side of the float part in a vertically extending or helically coiled manner.

[0014] For the above-mentioned density measurement device for irregular solids based on liquid level height, in a possible implementation manner, the float matrix has an annular side wall, and the at least one protruding structure includes a plurality of them, and the plurality of protruding structures are arranged along the circumferential direction of the annular side wall.

[0015] With such a configuration, it is possible to ensure the stability and horizontal uniformity of the float part.

[0016] It can be understood that those skilled in the art can determine the distribution manner of the protruding structure on the annular side wall according to actual needs. Exemplarily, the protruding structure is a strip-shaped structure extending along the axial direction of the annular side wall.

[0017] For the above density measurement device for irregular solids based on the liquid level height, in a possible implementation manner, the float matrix is a centrosymmetric structure.

[0018] With such a configuration, it is possible to avoid phenomena such as roll caused by gravity imbalance, thereby ensuring the accuracy of the measurement.

[0019] It can be understood that those skilled in the art can determine the structural form of the float matrix according to actual needs. For example, it can be a plate-shaped part, a columnar part, a hollow structure, etc.

[0020] For the above density measurement device for irregular solids based on the liquid level height, in a possible implementation manner, the float matrix includes: a first matrix; a second matrix, which forms an annular cavity, and the annular cavity surrounds the outside of the first matrix; a plurality of support ribs, and both ends of the support ribs are fixedly connected or integrally formed with the first matrix and the inner wall of the annular cavity respectively.

[0021] With such a configuration, a possible structural form of the float matrix is given. At this time, the first matrix is the measurement area. For example, the first matrix can be a columnar structure, a cylindrical structure, etc.

[0022] For the above density measurement device for irregular solids based on the liquid level height, in a possible implementation manner, the device includes: a mounting matrix, the first container can be arranged on the mounting matrix, and the distance detection component is arranged on the mounting matrix.

[0023] For the above density measurement device for irregular solids based on the liquid level height, in a possible implementation manner, the mounting matrix of the device includes: a base, which can be placed at the target mounting position; wherein, a buffer structure is arranged at the bottom of the base close to the target mounting position.

[0024] With such a configuration, it is possible to effectively prevent the interference of environmental vibration factors on the measurement. For example, the buffer structure can be a buffer pad, etc.

[0025] For the above density measurement device for irregular solids based on the liquid level height, in a possible implementation manner, the material of the float part includes polytetrafluoroethylene; and / or the floating container is configured with a counterweight; and / or the distance detection component is a laser displacement sensor (in the assembled state, the laser displacement sensor is above the float part); and / or the device is configured with a temperature detection component, and the temperature detection component can detect the temperature of the liquid contained in the first container; and / or the device is configured with a mass measurement component, and the mass measurement component is used to measure the mass of the object to be measured.

[0026] Since polytetrafluoroethylene has good hydrophobicity, it will not cause changes in the water surface height due to its own water absorption, thus affecting the measurement accuracy of the device. Among them, the setting of the counterweight can effectively prevent the floating container from tilting in the second container and other phenomena, and reduce the probability of the floating container colliding with the second container. Since water is involved in the measurement scheme, through consulting materials and research, the inventor learned that under different temperature conditions, the density of water is different. Specifically, the density of water will decrease as the temperature increases. Therefore, through the configuration of the temperature detection component, it is possible to more accurately obtain the density of the liquid based on the temperature of the liquid, thereby ensuring the accuracy of the measurement. In addition, in the case where it is necessary to further determine the volume of the object to be measured, according to the measurement result of the mass measurement component, double measurement of density and volume can be achieved. For example, the mass measurement component can be a balance, etc. Obviously, it is also possible not to configure the mass measurement component and determine the mass of the object to be measured by means such as directly reading the outer package information or measuring the mass at other positions different from the density measurement device for irregular solids based on the liquid level height.

[0027] In a second aspect, the present application provides a measurement method for a density measurement device for irregular solids based on the liquid level height. The measurement method includes the following steps: determining a first distance between the distance detection component and the float part when the object to be measured is not placed; determining a second distance between the distance detection component and the float part when the object to be measured is placed in the accommodation space of the floating container; determining a third distance between the distance detection component and the float part when the object to be measured is directly placed in the second container; and determining the density of the object to be measured according to the first distance, the second distance, and the third distance.

[0028] With such a configuration, it is possible to determine the density of the object to be measured through the height data in three states.

[0029] It should be noted that the first / second / third distance between the "distance detection component and the float part" should be understood as the distance between the detection point of the distance detection component and the measurement area of the float part. Taking the aforementioned "the float base includes: a first base; a second base formed with an annular cavity, the annular cavity surrounding the outside of the first base; and a plurality of support ribs, both ends of the support ribs being fixedly connected or integrally formed with the first base and the inner wall of the annular cavity" as an example, the measurement area of the float part at this time should be the position of the approximate center of the first base.

[0030] It can be understood that this method has all the technical effects of the density measurement device for irregular solids based on the liquid level height described in any one of the foregoing, and will not be elaborated here.

[0031] For the measurement method of the density measurement device for irregular solids based on the liquid level height, in a possible implementation manner, the method further includes: obtaining the mass of the object to be measured; calculating the volume of the object to be measured according to the mass and the determined density of the object to be measured.

[0032] With such a configuration, it is possible to further determine the volume of the object to be measured according to the determined density.

[0033] In the preferred implementation manner of the present application, the measurement device has the advantages of being structurally compact and easy to operate. Obviously, the measurement device is applicable to directly measuring the density of both regular and irregular solids in an object, and is also applicable to directly measuring the density of solids with a density greater than and less than that of water. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for the description of the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present application, and those of ordinary skill in the art can also obtain other drawings based on these drawings without creative efforts.

[0035] Figure 1 A three-dimensional structural schematic diagram of a density measurement device for irregular solids based on the liquid level height according to an embodiment of the present application is shown;

[0036] Figure 2 An exploded structural schematic diagram of a density measurement device for irregular solids based on the liquid level height according to an embodiment of the present application is shown;

[0037] Figure 3 A structural schematic diagram of the float part in a density measurement device for irregular solids based on the liquid level height according to an embodiment of the present application is shown; Figure 1 ;

[0038] Figure 4 Schematic structure of the float part in the density measurement device for irregular solids based on liquid level height according to an embodiment of the present application Figure 2 ; and

[0039] Figure 5 Flow chart showing the density measurement method for irregular solids based on liquid level height according to an embodiment of the present application

[0040] In the attached drawings:

[0041] 100. Density measurement device for irregular solids based on liquid level height

[0042] 1. Container part

[0043] 11. First container; 12. Second container; 13. Connecting pipe

[0044] 2. Floating part

[0045] 21. Float part

[0046] 211. Float matrix

[0047] 2111. First matrix

[0048] 2112. Second matrix; 21121. Annular cavity

[0049] 2113. Support rib

[0050] 212. Protruding structure

[0051] 22. Floating container

[0052] 3. Mounting matrix

[0053] 31. Base; 311. First mounting position

[0054] 32. Bracket; 321. Second mounting position

[0055] 4. Distance detection component Detailed implementation mode

[0056] The preferred implementation modes of the present application will be described below with reference to the accompanying drawings. Those skilled in the art should understand that these implementation modes are only used to explain the technical principle of the present application and are not intended to limit the protection scope of the present application

[0057] Embodiments of the present application will be described in detail below. Examples of the embodiments are shown in the accompanying drawings, where the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the accompanying drawings are exemplary and are only used to explain the present application, and should not be construed as a limitation of the present application.

[0058] Those skilled in the art of the present technology can understand that, unless specifically stated otherwise, the singular forms "a", "an", "the" and "said" used herein may also include the plural forms. It should be further understood that the term "comprising" used in the specification of the present application means the presence of the described features, integers, steps, operations, elements and / or components, but does not exclude the presence or addition of one or more other features, integers, steps, operations, elements, components and / or their groups. It should be understood that when we say that an element is "connected" or "coupled" to another element, it can be directly connected or coupled to other elements, or there may also be intermediate elements. In addition, the "connection" or "coupling" used herein may include wireless connection or coupling. The phrase "and / or" used herein includes any and all combinations of any one of the one or more related listed items.

[0059] Those skilled in the art can understand that, unless otherwise defined, all terms (including technical terms and scientific terms) used herein have the same meaning as the general understanding of those of ordinary skill in the art to which the present application belongs. It should also be understood that terms such as those defined in a general dictionary should be understood to have a meaning consistent with the meaning in the context of the prior art, and will not be interpreted with an idealized or overly formal meaning unless defined as here.

[0060] In addition, for better illustration of the present application, numerous specific details are given in the following specific embodiments. Those skilled in the art should understand that the present application can also be implemented without some specific details. In some instances, the principles of laser sensors well-known to those skilled in the art are not described in detail in order to highlight the gist of the present application.

[0061] Mainly referring to Figures 1 to 4, in a possible implementation, the density measurement device 100 for irregular solids based on the liquid level height mainly includes a container part 1, a floating part 2, a mounting base 3, and a distance detection component 4. Among them, the container part 1 includes a first container 11 and a second container 12 that are communicated with each other. The floating part 2 mainly includes a float part 21 and a floating container 22. The float part 21 can be in a natural floating state in the liquid contained in the first container 11, and the floating container 22 can be in a floating state in the liquid contained in the second container 12. The floating container 22 is formed with a containing space, and the object to be measured can be placed in the containing space. As in this example, the liquid is pure water. Among them, the mounting base 3 is mainly used to place the first container 11 and install the distance detection component 4. The distance detection component 4 is mainly used to determine the height change of the float part in different states by detecting the distance between it and the measurement area of the float part 21.

[0062] As in this embodiment, the distance detection component 4 is a laser displacement sensor. Exemplarily, a BL-30NZ type laser sensor (with a measurement center distance of 30 mm) is adopted, that is, the effective data can be measured when the distance between the float surface and the laser sensor is within the range of 25 - 35 mm in the space, and the accuracy can reach 0.01 mm. The reason is as follows: Through theoretical simulation and calculation, when the object to be measured is a small solid such as jade, metal, or plexiglass, the height change of the liquid level may be between a few tenths and one point several millimeters. For such a small change amplitude of the liquid level height, how to accurately measure the height is one of the core problems that the device has to face to ensure its reliability.

[0063] In this way, by placing the float part 21 and the floating container 22 in different containers respectively, when the object to be measured is placed in the containing space of the floating container 22, the stability of the float part 21 is greatly increased. For example, the movement amount of the float part 21 in the horizontal plane will be greatly reduced. Since the movement amount of the float part 21 in the horizontal plane will directly affect the position of the measurement point, it will interfere with the repeatability of the measurement point. For example, it is necessary to deal with the interference by means of multi-point detection, multiple detections, etc.

[0064] On the premise that the movement amount of the float part 21 in the horizontal plane is greatly reduced, for example, the accuracy of the measurement can be ensured by fixed single-point measurement. Compared with the multi-point measurement method, the number of distance detection components 4 is reduced, and the cost of the device can be significantly reduced on the premise of ensuring the measurement accuracy.

[0065] In a possible implementation, the installation base 3 includes a base 31 at the bottom and a bracket 32 disposed on the base 31. The bracket 32 includes a vertical portion and a horizontal portion. A first installation position 311 is provided on the upper surface of the base 31. The first container 11 can be placed in the first installation position 311. A second installation position 321 is provided on the horizontal portion, and the distance detection component 4 can be disposed in the second installation position 321. For example, a buffer structure can be provided below the base 31. The buffer structure can be a polyurethane backing plate to effectively prevent environmental vibration factors such as personnel walking and the experimental table being touched from interfering with the measurement results.

[0066] In a possible implementation, the first container 11 and the second container 12 are communicated with each other through a connecting pipe 13 at a position near the bottom. For example, the first container 11 serves as the main cup with an inner diameter of 100 mm, and the second container 12 serves as the auxiliary cup with an inner diameter of 75 mm. The heights of both the main cup and the auxiliary cup are 160 mm, and both are made of acrylic material.

[0067] In a possible implementation, the float part 21 mainly includes a float base body 211 and at least one protruding structure 212. The float base body 211 can be in a natural floating state in the liquid in the first container 11. The arrangement of the protruding structure 212 can reduce the contact area and frictional resistance between the float base body 211 and the inner wall of the first container 11.

[0068] In a possible implementation, the float base body 211 has an annular side wall, and a plurality of protruding structures 212 are circumferentially arranged on the annular side wall. In this example, the protruding structure 212 is a strip structure extending along the axial direction of the annular side wall and having a length less than the axial dimension of the annular side wall.

[0069] In a possible implementation, the float base body 211 is a centrosymmetric structure to avoid phenomena such as the float part 21 tilting inside the first container 11 due to the unbalanced gravity distribution of different layouts of the float base body 211, thereby ensuring the stability of the measurement process. In this example, the float base body 211 includes a first base body 2111 and a second base body 2112. The first base body 2111 is generally a cylindrical structure. For example, the measurement area of the float part is approximately at the axial center position of the upper end of the cylindrical structure. The second base body 2112 forms an annular cavity 21121 surrounding the outside of the first base body 2111, and a plurality of support ribs 2113 are provided between the outer wall of the cylindrical structure and the inner wall of the annular cavity 21121.

[0070] In a possible embodiment, the material of the float part 21 is polytetrafluoroethylene, and the floating container 22 is equipped with a counterweight. Since polytetrafluoroethylene has good hydrophobicity, it will not cause changes in the water surface height due to its own water absorption, thereby affecting the measurement accuracy of the device. The setting of the counterweight can ensure the posture stability of the floating container 22 in the second container 12. As in this example, the counterweight is a lead sinker, and a 3D-printed pla structure for installing and configuring the lead sinker can be glued to the bottom of the floating container 22 with waterproof glue. Exemplarily, the mass of the lead sinker is 100g and the length is 63mm.

[0071] Considering that it may be inconvenient to take out a smaller object to be tested after it is placed in the floating container, the floating container may be provided with a holding structure for placing the object to be tested. For example, the holding structure is an auxiliary frame made of a light extruded board material, based on which the auxiliary frame with the sample to be tested can be taken out from the containing space of the second container.

[0072] In a possible implementation, a temperature sensor may be provided in the second container. Referring to Table 1 below, the density of water varies under different temperature conditions, so based on the detection result of the temperature sensor, the density of water under the current temperature condition may be more accurately obtained by looking up the table.

[0073] Table 1 Correspondence between water density and temperature

[0074]

[0075] In addition, the density measuring device of irregular solid based on liquid level of the present application can be equipped with a mass measuring component, such as a balance. For example, based on the density of the object to be measured, the mass of the object to be measured can be measured by the balance, and then the volume of the object to be measured can be calculated.

[0076] The density measuring device for irregular solids based on liquid level can be used to measure the density (and volume) of irregular solid objects. Figure 5 In a possible implementation manner, the method for measuring irregular solids mainly includes the following steps:

[0077] S510, determining a first distance h1 between the distance detection component and the measuring area of ​​the float part without placing the object to be measured;

[0078] S520, when the object to be detected is placed in the floating container, determining a second distance h2 between the distance detection component and the measuring area of ​​the float part;

[0079] S530. When the object to be measured is directly placed into the second container, determine the third distance h3 between the distance detection component and the measurement area of the float part;

[0080] S540. Determine the density ρ of the object to be measured according to the first distance h1, the second distance h2, and the third distance h3 待测物体 ;

[0081] S550. Determine the volume V of the object to be measured according to the determined density of the object to be measured and the obtained mass of the object to be measured 待测物体 .

[0082] Among them, the density of the object to be measured is calculated by the following formula:

[0083]

[0084] Such as ρ therein 液体 can be determined by looking up a table. Specifically, referring to Table 1 above, according to the pre-established mapping relationship between the temperature and density of the liquid, determine the density of the liquid at this time according to the liquid temperature detected by the temperature detection component.

[0085] Among them, the volume V of the object to be measured 被测物体 can be calculated by the following formula:

[0086]

[0087] Among them, such as the mass m of the object to be measured can be directly measured by a balance 待测物体 .

[0088] It should be noted that although the above embodiments describe each step in a specific order, those skilled in the art can understand that in order to achieve the effects of this application, different steps do not necessarily have to be executed in such an order. They can be executed simultaneously or in other orders, and certain steps can also be added, replaced, or omitted. For example, the order of S510 - S530 can be swapped.

[0089] It should be noted that although the above is introduced by taking the above specific method as an example, those skilled in the art can understand that this application should not be limited to this. In fact, users can flexibly adjust relevant steps and parameters in the steps according to actual application scenarios and other situations. For example, the first distance h1, the second distance h2, and the third distance h3 are determined by using a multiple detection method.

[0090] If the inventor uses multiple samples of different specifications (such as material, size, shape, etc.) as the objects to be measured to test the accuracy of this application, the test shows that the deviations between the measurement results of the device of this application for samples such as polytetrafluoroethylene, aluminum heat sinks, and plexiglass and the theoretical values are -0.89%, 0.95%, and 2% respectively (refer to Tables 2 to 4 in the following text). It can be seen that the device has high measurement accuracy.

[0091] Referring to Table 2, taking polytetrafluoroethylene as an example, the average density of four measurements is 2009.08 kg / m 3 , and the coefficient of variation is 1.74%. The deviation from the actual density of the sample (2.027 g / cm 3 ) is -0.89%.

[0092] Table 2 Measurement results and analysis for the sample of polytetrafluoroethylene

[0093]

[0094] Referring to Table 3, taking the aluminum heat sink as an example, the measured density is 2.726×10 3 kg / m 3 , and the deviation from the theoretical density (2.7×10 3 kg / m 3 ) is 0.95%, and the deviation from the actual density of the sample (2.709 g / cm 3 ) is 0.63%.

[0095] Table 3 Measurement results for the sample of aluminum heat sink

[0096]

[0097] Based on the measurement results in Table 3, the measured density ρ 被测物体 ==(h1 - h2) / (h1 - h3)×0.997043×1000 = 2725.58 kg / m 3 = 2.726×10 3 kg / m 3 . The deviation between the measured density and the theoretical density of aluminum material (about 2.7×10 3 kg / m 3 ) is (2.726 - 2.7) / 2.7×100% = 0.95%.

[0098] Referring to Table 4, taking plexiglass as an example, the measured density is 1.203×10 3 kg / m 3 , and the deviation from the theoretical density (1.18×10 3 kg / m3 ) The deviation from it is 2%, compared with the actual density of the sample (1.198 g / cm 3 ) The deviation from it is 0.42%.

[0099] Table 4 Measurement results for the sample plexiglass

[0100]

[0101] Based on the measurement results in Table 4, the measured density ρ 被测物体 =(h1 - h2) / (h1 - h3)×0.997537×1000 = 1203.71 kg / m 3 = 1.203×10 3 kg / m 3 , the deviation between the measured density and the theoretical density of plexiglass (about 1.18×10 3 kg / m 3 ) is (1.203 - 1.18) / 1.18×100% = 2%.

[0102] In addition, referring to Table 5, the inventor submitted the object to be measured (sample) to a third party for testing. By comparing and analyzing the test results of the third party with the measured results obtained by using this device, the scientificity and accuracy of the device can be further verified. For example, the sample submitted to the third party for testing and the sample measured by using this device should be the same sample.

[0103] Table 5 Comparative analysis between the measured results obtained by using this device and the measurement results of the third party

[0104]

[0105] It can be seen that in the preferred embodiment of this application, by placing the float part with floating properties and the floating container in the first container and the second container that communicate with each other respectively, and detecting the height change of the float part by the laser distance sensor as the distance detection component, the density of the object to be measured with irregular shape can be determined. Since the float part has almost no movement amount in the horizontal plane and the dimension of the float part along the thickness direction of the contour size (substantially a disc-shaped structure) is substantially uniform, the measurement accuracy of the distance can be ensured by a fixed distance detection component (detecting the center of the first substrate). In addition, by configuring a temperature detection component, the measurement accuracy of the density of the object to be measured is further improved. By configuring a mass measurement component, the volume of the object to be measured can be determined on the basis of determining the density of the object to be measured.

[0106] In addition, the device of the present application also has the advantages of being portable and movable. Therefore, it has certain application and popularization significance for learning scenarios or other scenarios where it is necessary to timely know the density (and volume) of any item. Exemplarily, in addition to different contour shapes, different types of jade usually also have different densities. In such a functional scenario, the density measurement device of the present application can be used to measure the density and volume of jade.

[0107] So far, the technical solutions of the present application have been described in conjunction with the preferred embodiments shown in the drawings. However, it is easy for those skilled in the art to understand that the protection scope of the present application is obviously not limited to these specific embodiments. Without departing from the principle of the present application, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will all fall within the protection scope of the present application.

Claims

1. A density measurement device for irregular solids based on the liquid level height, characterized in that The device includes: (1) A container part, which includes: A first container; and A second container, which can communicate with the first container with each other; (2) A floating part, which includes: A float part, which can float in the liquid contained in the first container; and A floating container, which can float in the liquid contained in the second container, and The floating container is formed with a containing space, and the object to be measured can be placed in the containing space; (3) A distance detection component, which is arranged to be able to detect the state change of the float part in the first container.

2. The density measurement device for irregular solids based on liquid level height according to claim 1, characterized in that, The float part includes: A float base body; and At least one protruding structure, which is arranged on the float base body.

3. The density measurement device for an irregular solid based on the liquid level height according to claim 2, characterized in that, The float base body has an annular side wall, The at least one protruding structure includes a plurality of them, and the plurality of protruding structures are arranged along the circumferential direction of the annular side wall.

4. The density measurement device for irregular solids based on liquid level height according to claim 2, wherein The float base body is a centrosymmetric structure.

5. The density measurement device for an irregular solid based on the liquid level height according to claim 4, characterized in that, The float base body includes: A first base body; A second base body, which is formed with an annular cavity, and the annular cavity surrounds the outside of the first base body; A plurality of support ribs, and both ends of the support ribs are respectively fixedly connected or integrally formed with the first base body and the inner wall of the annular cavity.

6. The density measurement device for an irregular solid based on the liquid level height according to claim 1, wherein The device includes: A mounting base body, the first container can be arranged on the mounting base body, and the distance detection component is arranged on the mounting base body.

7. The density measuring device for irregular solids based on liquid level height according to claim 6, characterized in that, The mounting base body The device includes: A base, which can be placed at the target mounting position; Wherein, a buffer structure is arranged at the bottom of the base.

8. The density measurement device for an irregular solid based on the liquid level height according to claim 1, characterized in that, The material of the float part includes polytetrafluoroethylene; and / or The floating container is configured with a counterweight; and / or The distance detection component is a laser displacement sensor; and / or The device is configured with a temperature detection component, and the temperature detection component can detect the temperature of the liquid contained in the first container; and / or The device is configured with a mass measurement component, and the mass measurement component is used to measure the mass of the object to be measured.

9. A measuring method of a density measuring device for an irregular solid based on liquid level height according to any one of claims 1 to 8, characterized in that, The measurement method includes the following steps: In the case of not placing the object to be measured, determine the first distance between the distance detection component and the float part; In the case of putting the object to be measured into the containing space of the floating container, determine the second distance between the distance detection component and the float part; In the case of directly putting the object to be measured into the second container, determine the third distance between the distance detection component and the float part; According to the first distance, the second distance and the third distance, determine the density of the object to be measured.

10. The measuring method of the density measuring device for irregular solids based on the liquid level height according to claim 9, characterized in that, The method further includes: Obtain the mass of the object to be measured; According to the mass and the determined density of the object to be measured, calculate the volume of the object to be measured.

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