Liquid weight non-contact measurement method

Abstract

The invention discloses a liquid weight non-contact measurement method, and relates to the technical field of container measurement, and the liquid weight non-contact measurement method comprises the steps: measuring the temperature information of a solution in a container; measuring the reflected signal intensity of the solution in the container under the temperature information; acquiring density information of the solution in the container according to the temperature information and the reflected signal intensity; measuring volume information of the solution in the container; and calculating weight information of the solution in the container according to the volume information and the density information. According to the technical scheme, the density of the solution can be measured only by measuring the temperature information of the solution in the container, sending the signal waves to the solution in the container through the transceiver and depending on the intensity of the reflected signals returned by the signal waves, complete non-contact measurement is achieved, pollution is avoided, and the measurement accuracy is improved. And the density of the solution stored in the container for a long time can be monitored.

Description

Technical Field

[0001] The present invention relates to the technical field of container measurement, and particularly relates to a non-contact measurement method for the weight of a liquid. Background Art

[0002] In many industrial fields such as food fermentation and alcohol brewing, the accurate measurement of the volume, density, and weight of liquids in irregular containers remains an urgent problem to be solved.

[0003] Taking the wine jars in the liquor industry as an example, in the brewing and storage processes of Maotai-flavor liquor, enterprises have long faced challenges in accurately measuring the base liquor. There are no effective monitoring and management measures for phenomena such as leakage of wine jars and theft of liquor by internal employees. At the same time, due to the inability to achieve accurate measurement, it is difficult to realize the mortgage and credit expansion of core assets.

[0004] The wine storage warehouses of liquor enterprises are not in a constant humidity and temperature environment and are greatly affected by the external temperature. It is known that the temperature in the wine warehouse is generally between 0°C and 30°C. The temperature is relatively high in summer, reaching 30°C; the temperature is relatively low in winter, dropping to 0°C. The density of the liquor body is significantly affected by temperature. To achieve non-contact accurate measurement of the density of the liquor body in a closed container, the influence of temperature must be considered.

[0005] The main component of the base liquor is ethanol, which belongs to flammable and explosive substances. Therefore, the base liquor warehouse is a dangerous goods warehouse with strict explosion protection, and all high-power active devices are prohibited from being placed except for emergency equipment. It is necessary to develop real-time accurate measurement equipment for base liquor that meets the characteristics of accuracy, passivity, low power, and explosion protection. One of the functions of the equipment is to achieve non-contact accurate measurement of the density of the liquor body in a closed container, and the density of the liquor body stored in the wine warehouse changes with the storage years and temperature.

[0006] Existing technical solutions only simply achieve the function of measuring the weight of the base liquor in the wine jar, with poor accuracy, resulting in poor product reliability and difficulty in industrial promotion. Among them, the density monitoring of the liquor body is only carried out by contact measurement before the wine jar is sealed, which is easy to cause pollution, and the influence caused by the change of the density of the base liquor during long-term storage is not considered, and there is no real-time monitoring. Summary of the Invention

[0007] The main object of the present invention is to propose a non-contact measurement method for the weight of a liquid, aiming to solve the technical problems in the existing technology that only the weight measurement function of the wine jar can be monitored, the density of the base liquor in the wine jar can only be measured by contact, which is easy to cause pollution, and the monitoring and measurement of the change in the density of the base liquor during long-term storage cannot be achieved.

[0008] To achieve the above object, the present invention proposes a non-contact measurement method for the weight of a liquid, and the non-contact measurement method for the weight of a liquid includes: Measuring the temperature information of the solution in the container; Measure the reflection signal intensity of the solution in the container at the temperature information; Obtain the density information of the solution in the container according to the temperature information and the reflection signal intensity; Measure the volume information of the solution in the container; Calculate the weight information of the solution in the container according to the volume information and the density information.

[0009] In one embodiment, the step of obtaining the density information of the solution in the container according to the temperature information and the reflection signal intensity includes: Obtain the preset temperature of the preset solution; Measure the preset density and preset signal intensity corresponding to the preset solution at the preset temperature; Associate the preset temperature with the corresponding preset density and preset signal intensity and save them as a data packet in the database; Search for a data packet corresponding to the temperature information and the reflection signal intensity in the database, and use the corresponding preset density in the data packet as the density information.

[0010] In one embodiment, the step of associating the preset temperature with the corresponding preset density and preset signal intensity and saving them as a data packet in the database includes: Generate a first characteristic function according to multiple preset signal intensities and the corresponding preset densities; Associate the preset temperature with the first characteristic function and save them as the data packet in the database.

[0011] In one embodiment, the step of searching for a data packet corresponding to the temperature information and the reflection signal intensity in the database, and using the corresponding preset density in the data packet as the density information includes: Obtain the preset temperature corresponding to the temperature information and its associated first characteristic function; Obtain the preset density corresponding to the reflection signal intensity according to the first characteristic function and the reflection signal intensity; Use the preset density as the density information.

[0012] In one embodiment, the step of obtaining the preset temperature corresponding to the temperature information and its associated first characteristic function includes: Calculate the difference between the temperature information and the preset temperature; Judge whether the absolute value of the difference is less than or equal to a preset difference; When the absolute value of the difference is less than or equal to the preset difference, obtain the first characteristic function associated with the preset temperature.

[0013] In one embodiment, the preset solution has multiple types; the steps of associating the preset temperature with the first characteristic function and saving it as the data packet in the database include: Obtain the type of the preset solution; Associate the type, the preset temperature with the first characteristic function and save it as the data packet in the database.

[0014] In one embodiment, after the step of calculating the weight information of the solution in the container according to the volume information and the density information, the following steps are further included: Obtain the alcohol content information of the solution in the container according to the density information and the temperature information.

[0015] In one embodiment, the steps of obtaining the alcohol content information of the solution in the container according to the density information and the temperature information include: Obtain the corresponding preset alcohol content and preset density of multiple preset solutions at the same preset temperature; Associate the preset temperature with the corresponding preset density and preset alcohol content and save it as a data packet in the database; Search for a data packet corresponding to the temperature information and the density information in the database, and use the corresponding preset alcohol content in the data packet as the alcohol content information.

[0016] In one embodiment, the steps of associating the preset temperature with the corresponding preset density and preset alcohol content and saving it as a data packet in the database include: Generate a second characteristic function according to multiple preset densities and the corresponding preset alcohol contents; Associate the preset temperature with the second characteristic function and save it as the data packet in the database.

[0017] In one embodiment, the steps of searching for a data packet corresponding to the temperature information and the density information in the database and using the corresponding preset alcohol content in the data packet as the alcohol content information include: Obtain the second characteristic function associated with the preset temperature according to the temperature information; Obtain the preset alcohol content corresponding to the density information according to the density information and the second characteristic function; Use the preset alcohol content as the alcohol content information.

[0018] The technical solution of the present invention only needs to measure the temperature information of the solution in the container, and send a signal wave into the solution in the container through the transceiver device. The density of the solution can be measured by relying on the intensity of the reflected signal returned by the signal wave, realizing completely non-contact measurement, avoiding pollution, and being able to monitor the density of the solution in the container stored for a long time. Description of the Drawings

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on the structures shown in these drawings.

[0020] Figure 1 Schematic flow chart of the first embodiment of the non-contact measurement method for liquid weight of the present invention; Figure 2 Schematic flow chart of the second embodiment of the non-contact measurement method for liquid weight of the present invention; Figure 3 Schematic flow chart of the third embodiment of the non-contact measurement method for liquid weight of the present invention; Figure 4 Schematic flow chart of the fourth embodiment of the non-contact measurement method for liquid weight of the present invention; Figure 5 Schematic flow chart of the fifth embodiment of the non-contact measurement method for liquid weight of the present invention; Figure 6 Schematic flow chart of the sixth embodiment of the non-contact measurement method for liquid weight of the present invention; Figure 7 Schematic flow chart of the seventh embodiment of the non-contact measurement method for liquid weight of the present invention; Figure 8 Schematic flow chart of the eighth embodiment of the non-contact measurement method for liquid weight of the present invention; Figure 9 Schematic diagram of the first characteristic function of the non-contact measurement method for liquid weight of the present invention; Figure 10 Schematic diagram of the second characteristic function of the non-contact measurement method for liquid weight of the present invention; Figure 11 Schematic diagram of the structure of the non-contact measurement method for liquid weight of the present invention; Figure 12 Schematic diagram of the transceiver of the detection signal of the non-contact measurement method for liquid weight of the present invention.

[0021] Explanation of the reference numerals: 1. Height and density monitoring integrated device; 2. Density monitoring transceiver device.

[0022] The realization, functional features and advantages of the object of the present invention will be further described with reference to the embodiments and the accompanying drawings. Detailed implementation manners

[0023] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts belong to the scope of protection of the present invention.

[0024] It should be noted that if there are directional indications (such as up, down, left, right, front, back...) involved in the embodiments of the present invention, the directional indications are only used to explain the relative position relationship and movement conditions between components in a certain specific posture. If the specific posture changes, the directional indications will also change accordingly.

[0025] In addition, if there are descriptions such as "first", "second", etc. involved in the embodiments of the present invention, the descriptions of "first", "second", etc. are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of the features. In addition, if "and / or" or "and / or" appears throughout the text, its meaning includes three parallel solutions. Taking "A and / or B" as an example, it includes solution A, solution B, or a solution where A and B are satisfied simultaneously. In addition, the technical solutions between the embodiments can be combined with each other, but it must be based on the fact that those of ordinary skill in the art can implement it. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0026] The present invention proposes a non-contact measurement method for the weight of a liquid.

[0027] Please refer to Figure 1 , Figure 1 which is a schematic flowchart of the first embodiment of the non-contact measurement method for the weight of a liquid of the present invention. The non-contact measurement method for the weight of a liquid includes the following steps: Step S10: Measure the temperature information of the solution in the container; Step S20: Measure the reflection signal intensity of the solution in the container under the temperature information; Step S30: Obtain the density information of the solution in the container according to the temperature information and the reflection signal intensity; Step S40: Measure the volume information of the solution in the container; Step S50: Calculate the weight information of the solution in the container according to the volume information and the density information.

[0028] In this embodiment, the container is taken as an example of a wine jar, and the solution in the container is base wine. First, the temperature of the solution in the container is measured by a temperature detection device to obtain temperature information. The temperature detection device can adopt an infrared temperature detection device, etc. The temperature detection device has been maturely applied in various fields and will not be elaborated here.

[0029] Subsequently, the reflection signal intensity of the solution in the container is detected by a density detection transceiver device. Please refer to Figure 11 and Figure 12 . A height and density monitoring integrated device 1 is also provided at the top of the container. At the same time, a density monitoring transceiver device 2 is provided on the outer wall of the container. The height and density monitoring integrated device 1 is connected to the density monitoring transceiver device 2 through a wire. The height and density monitoring integrated device 1 activates the density monitoring transceiver device 2 to emit an electromagnetic wave signal or an ultrasonic wave signal A. The detection signal B passes through the container and the solution, is attenuated and reflected, and is received by the density monitoring transceiver device 2. Finally, the density information matching the temperature information and the reflection signal intensity is searched in the database.

[0030] In addition, in this embodiment, the height and density monitoring integrated device 1 can also measure the liquid level height of the solution in the container. Compared with a regular container, the proportion of the solution relative to the volume of the container can be obtained through the liquid level height of the solution, so as to obtain the volume of the solution. Compared with an irregular container, the method of searching for the relative volume ratio of the liquid level height in the container in the database can be adopted, etc.

[0031] The liquid weight in the container is calculated by the following formula: Formula 1: ; where, in Formula 1, m is the mass, that is, the weight of the liquid. ρ is the density information, v is the liquid volume. After calculation, the change of the liquid weight in the container can be monitored in real time.

[0032] The technical solution of the present invention only needs to measure the temperature information of the solution in the container, and send a signal wave to the solution in the container through a transceiver device. Relying on the reflection signal intensity returned by the signal wave, the density measurement of the solution can be realized. It realizes completely non-contact measurement, avoids pollution, and can monitor the density of the solution in the container stored for a long time.

[0033] Further, please refer to Figure 2 , Figure 2Schematic flowchart of the second embodiment of the non-contact measurement method for the weight of a liquid according to the present invention. Step S30 includes: Step S31: Obtain the preset temperature of the preset solution; Step S32: Measure the preset density and preset signal strength corresponding to the multiple preset solutions at multiple different preset temperatures; Step S33: Associate the preset temperature with the corresponding preset density and preset signal strength and save them as a data packet in the database; Step S34: Search for the data packet corresponding to the temperature information and the reflection signal strength in the database, and use the corresponding preset density in the data packet as the density information.

[0034] Specifically, before setting, samples of multiple different preset solutions are taken and actually measured. The alcohol content of different preset solutions is different, which leads to different preset densities of the preset solutions. Among them, each preset temperature has a corresponding set of preset density and preset signal strength. Therefore, by actually sampling and analyzing multiple samples, a database is established first. The number of samples collected in the database should be greater than or equal to 300 to ensure uniform coverage of various storage environments.

[0035] During the measurement process, different preset temperatures are also likely to affect the preset density and preset signal strength of the preset solution. Therefore, in this embodiment, the preset temperature of the preset solution can also be adjusted, that is, the preset density and the corresponding preset signal strength of multiple preset solutions at different preset temperatures are collected respectively. Considering that the temperature range of the wine cellar is 0°C - 30°C, taking the preset temperature range as (0°C, 30°C) as an example, sampling is performed at intervals of the preset temperature difference, and the preset temperature difference can be set to 0.1°C - 1°C. At each preset temperature, the density of the solution is actually measured and recorded as the preset density; and the signal strength of the solution is actually measured and recorded as the preset signal strength. And the preset temperature, preset density and preset signal strength of the solution are associated and stored in the database. And a data packet is generated and stored in the database every time the preset temperature difference is reached. To ensure that the number of samples is greater than or equal to 300, the preset temperature difference should satisfy 300 samplings in the range of (0°C - 30°C).

[0036] When there are enough samples in the database, after measuring the temperature information and reflection signal strength of the solution, they are input into the database for matching and searching. When the preset temperature of the data packet is consistent with the temperature information and the preset signal strength is consistent with the reflection signal strength, the preset density in the data packet is used as the density information of the solution.

[0037] Further, please refer to Figure 3 , Figure 3It is a schematic flowchart of the third embodiment of the non-contact measurement method for the liquid weight of the present invention. Step S33 includes: Step S331: Generate a first characteristic function according to the multiple preset signal strengths and their corresponding preset densities; Step S332: Associate the preset temperature with the first characteristic function and save it as the data packet in the database.

[0038] When enough samples are collected, it is not difficult to find that there is a linear relationship between the preset density and the preset signal strength among multiple preset solutions at the same preset temperature. The first characteristic function is obtained by fitting. Please refer to Figure 9 , establish a coordinate system with the signal strength as the horizontal axis and the density as the vertical axis. Fit multiple groups of data to obtain the first characteristic function. In this embodiment, the first characteristic function is obtained by fitting under the condition that the room temperature is 24°C, that is, the preset temperature is 24°C.

[0039] In this embodiment, the method of obtaining the first characteristic function by fitting multiple samples can, on the one hand, improve the detection range and accuracy. When the temperature information of the solution to be measured is determined, the corresponding first characteristic function is found through the database, and then the measured reflection signal strength is substituted into the first characteristic function for calculation. On the other hand, by substituting the first characteristic function for calculation, it avoids the time-consuming problem of traversing and searching due to a large number of samples in the database, and improves the search speed.

[0040] Further, please refer to Figure 4 , Figure 4 It is a schematic flowchart of the fourth embodiment of the non-contact measurement method for the liquid weight of the present invention. Step S34 includes: Step S341: Obtain the preset temperature corresponding to the temperature information and its associated first characteristic function; Step S342: Obtain the preset density corresponding to the reflection signal strength according to the first characteristic function and the reflection signal strength; Step S343: Take the preset density as the density information.

[0041] Specifically, search for the preset temperature matching the temperature information in the database, and obtain the first characteristic function associated with the preset temperature. Then substitute the reflection signal strength into the first characteristic function, calculate the corresponding preset density through calculation, and assign the preset density to the density information for display.

[0042] Further, due to the inevitable errors caused during the measurement or counting process of the instrument, a preset difference should also be introduced during the judgment process to further improve the detection accuracy.

[0043] Step S341 specifically includes: Step S3411: Calculate the difference between the temperature information and the preset temperature; Step S3412: Determine whether the absolute value of the difference is less than or equal to a preset difference; Step S3413: When the absolute value of the difference is less than or equal to the preset difference, obtain the first characteristic function associated with the preset temperature.

[0044] In the actual calculation process, there may be a situation where the preset temperature pre-stored in the database is not completely consistent with the temperature information. Therefore, to improve the detection accuracy, in this embodiment, during the search process, by calculating the difference between the temperature information and the preset temperature, the absolute value of this difference is compared with the preset difference. When the absolute value of the difference is less than or equal to the preset difference, it means that the preset temperature and the temperature information are consistent, thus avoiding the situation of search failure.

[0045] Among them, the magnitude of the preset difference can be adjusted according to actual needs, such as determined by the storage environment or factors that can cause errors during measurement, etc.

[0046] Further, please refer to Figure 5 , Figure 5 which is a schematic flowchart of the fifth embodiment of the non-contact measurement method for the liquid weight of the present invention. Step S332 includes: Step S3321: Obtain the type of the preset solution; Step S3322: Associate the type, the preset temperature, and the first characteristic function and save them as the data packet in the database.

[0047] In this embodiment, due to different brewing methods, the base liquor includes multiple different types. To further improve the search accuracy and speed. In this embodiment, when establishing the database, the known types of preset solutions can also be directly associated with the data packet. Therefore, when the type of the solution to be measured can be determined, it can be matched and identified through its type and the type in the data packet. Among them, the type can be the brand, fragrance type, round, year, etc. of the preset solution.

[0048] It can be understood that for the same type of preset solution, at the same temperature, its signal intensity and density are only related to its alcohol content, that is, the first characteristic function generated by it is unique. When saving to the database, the type of the preset solution can be associated with its corresponding first characteristic function.

[0049] Thus, when the type of the solution to be measured is known, the corresponding first characteristic function can be found more quickly through its type, thereby improving the detection efficiency and at the same time improving the detection accuracy.

[0050] It should be noted that when the corresponding data packet is still not found after traversing the database, the current solution to be measured can be actually measured and calculated, and the measurement results can be saved to the database to expand the number of database samples and improve the measurement compatibility and reliability.

[0051] Further, please refer to Figure 6 , Figure 6 which is a schematic flowchart of the sixth embodiment of the non-contact liquid weight measurement method of the present invention. After step S50, it further includes: Step S60: Obtain the alcohol content information of the solution in the container according to the density information and the temperature information.

[0052] In this embodiment, when the solution to be measured is base liquor, the alcohol content information of the solution can be directly obtained according to its density information and temperature information during measurement.

[0053] Specifically, step S60 further includes: Step S61: Obtain the corresponding preset alcohol content and preset density of a variety of preset solutions at the same preset temperature; Step S62: Associate the preset temperature, the corresponding preset density, and the preset alcohol content and save them as a data packet in the database; Step S63: Search for the data packet corresponding to the temperature information and the density information in the database, and use the corresponding preset alcohol content in the data packet as the alcohol content information.

[0054] Further, please refer to Figure 7 , Figure 7 which is a schematic flowchart of the seventh embodiment of the non-contact liquid weight measurement method of the present invention. Step S62 includes: Step S621: Generate a second characteristic function according to the multiple preset densities and the corresponding preset alcohol contents one by one; Step S622: Associate the preset temperature with the second characteristic function and save it as the data packet in the database.

[0055] At the beginning of establishing the database, when measuring the alcohol content and density of multiple different types of base liquor, it can be determined that there is the same linear relationship between them. Therefore, in this embodiment, please refer to Figure 10 , and establish a coordinate system with the alcohol content as the horizontal axis and the density as the vertical axis. Fit multiple groups of data to obtain a second characteristic function. In this embodiment, the second characteristic function is obtained by fitting under the condition that the room temperature is 24 °C, that is, the preset temperature is 24 °C.

[0056] Similarly, during measurement, by directly substituting the density information into the second characteristic function, the detection range and accuracy can be improved. When the measured density information is between two adjacent preset density sample values, it can be substituted into the second characteristic function for calculation. On the other hand, by substituting into the second characteristic function for calculation, the problem of long time consumption due to traversing and searching when there are many samples in the database is avoided, which is beneficial to improving the search speed.

[0057] It should be noted that, in order to further improve the detection accuracy, in this embodiment, when establishing the database, the preset solution can still be classified when measuring the alcohol content, that is, the second characteristic function is associated with the type of the preset solution. To avoid the error influence caused by factors such as the brand and year of the base liquor.

[0058] It should be noted that through the analysis and research of the data stored in the database, it can be known that there is a linear relationship between the preset alcohol content and the preset density under the same preset temperature, and there is a unique and corresponding relationship between the preset signal intensity and the preset density at the same preset temperature. Therefore, it can be inferred that there is also a certain linear relationship between the preset signal intensity and the preset density, and the corresponding characteristic function is obtained by fitting.

[0059] Further, please refer to Figure 8 , Figure 8 which is a schematic flowchart of the eighth embodiment of the non-contact measurement method for the liquid weight of the present invention. Step S63 includes: Step S631: Obtain the second characteristic function associated with the preset temperature according to the temperature information; Step S632: Obtain the preset alcohol content corresponding to the density information according to the density information and the second characteristic function; Step S633: Use the preset alcohol content as the alcohol content information.

[0060] Specifically, after substituting the measured temperature information into the first characteristic function, the corresponding preset density is obtained through calculation. And the result is consistent after comparing the preset density with the preset signal intensity and the reflected signal intensity associated with the current preset density numerical node.

[0061] Then substitute the preset density into the second characteristic function, and the corresponding preset alcohol content is obtained through calculation, so as to determine the alcohol content information of the solution to be measured.

[0062] It should be noted that when the type is associated with the second characteristic function in the database and the type of the solution to be measured can be determined before measurement, the type of the solution to be measured can be input into the database as an optional condition to improve the measurement efficiency and the measurement accuracy at the same time.

[0063] The above are only exemplary embodiments of the present invention, and do not limit the protection scope of the present invention accordingly. Any equivalent structural transformation made under the technical concept of the present invention by using the content of the specification and drawings of the present invention, or any direct / indirect application in other related technical fields is included in the protection scope of the present invention.

Claims

1. A non-contact method for measuring liquid weight, characterized in that: The non-contact liquid weight measurement method comprises: Measuring the temperature information of the solution in the container; Measuring the reflected signal intensity of the solution in the container under the temperature information; Acquire density information of the solution in the container according to the temperature information and the intensity of the reflected signal; Measure the volume information of the solution in the container; The weight information of the solution in the container is calculated according to the volume information and the density information.

2. The non-contact liquid weight measurement method according to claim 1, characterized in that: The step of obtaining density information of the solution in the container according to the temperature information and the intensity of the reflected signal comprises: obtaining a preset temperature of a preset solution; Measuring the preset density and the preset signal strength corresponding to the plurality of the preset solutions at the preset temperature; Associating the preset temperature with the preset density and the preset signal strength corresponding thereto and saving them as a data packet in a database; The database is searched for a data packet corresponding to the temperature information and the reflected signal strength, and the preset density corresponding to the data packet is used as the density information.

3. The non-contact liquid weight measurement method according to claim 2, characterized in that: The step of associating the preset temperature with the corresponding preset density and the preset signal strength and saving them as a data packet in a database comprises: Generate a first characteristic function according to the plurality of preset signal strengths and the preset densities corresponding thereto; The preset temperature is associated with the first characteristic function and is saved in the database as the data packet.

4. The non-contact liquid weight measurement method according to claim 3, characterized in that: The steps of searching the database for a data packet corresponding to the temperature information and the reflected signal strength, and using the preset density corresponding to the data packet as the density information include: Acquire the preset temperature corresponding to the temperature information and the first characteristic function associated therewith; Acquire the preset density corresponding to the reflection signal strength according to the first characteristic function and the reflection signal strength; The preset density is used as the density information.

5. The non-contact liquid weight measurement method according to claim 4, characterized in that: The step of acquiring the preset temperature corresponding to the temperature information and the first characteristic function associated therewith comprises: Calculating the difference between the temperature information and the preset temperature; Determine whether the absolute value of the difference is less than or equal to a preset difference; When the absolute value of the difference is less than or equal to the preset difference, the first characteristic function associated with the preset temperature is acquired.

6. The non-contact liquid weight measurement method according to claim 3, characterized in that: The preset solution has multiple types; the step of associating the preset temperature with the first characteristic function and saving the data packet in the database comprises: Obtaining the type of the preset solution; The type, the preset temperature and the first characteristic function are associated and saved in the database as the data packet.

7. The non-contact liquid weight measurement method according to claim 1, characterized in that: After the step of calculating the weight information of the solution in the container according to the volume information and the density information, the method further includes: The alcohol content information of the solution in the container is obtained according to the density information and the temperature information.

8. The non-contact liquid weight measurement method according to claim 7, characterized in that: The step of obtaining the alcohol content information of the solution in the container according to the density information and the temperature information comprises: Obtaining corresponding preset alcohol degrees and preset densities of multiple preset solutions at the same preset temperature; Associating the preset temperature with the corresponding preset density and the preset alcohol content and saving them as a data package in a database; The database is searched for a data packet corresponding to the temperature information and the density information, and the preset alcohol content corresponding to the data packet is used as the alcohol content information.

9. The non-contact liquid weight measurement method according to claim 8, characterized in that: The step of associating the preset temperature with the corresponding preset density and the preset alcohol content and saving them as a data package in a database comprises: Generate a second characteristic function according to the plurality of preset densities and the preset alcohol degrees corresponding thereto; The preset temperature is associated with the second characteristic function and is saved in the database as the data packet.

10. The non-contact liquid weight measurement method according to claim 9, characterized in that: The steps of searching the database for a data packet corresponding to the temperature information and the density information, and using the preset alcohol content corresponding to the data packet as the alcohol content information include: Acquire the second characteristic function associated with the preset temperature according to the temperature information; Acquire the preset alcohol content corresponding to the density information according to the density information and the second characteristic function; The preset alcohol content is used as the alcohol content information.

Images