A method and device for measuring horizontal temperature field

Abstract

The present invention relates to the field of temperature measurement technology, and provides a method and device for measuring a horizontal temperature field. The method comprises: selecting a basic thermal conductivity corresponding to the target preparation method adopted by the graphene to be measured; obtaining the actual density and the actual carbon-hydrogen ratio of the graphene to be measured; determining a thermal conductivity correction value according to the actual density and the actual carbon-hydrogen ratio of the graphene to be measured; using the thermal conductivity correction value, correcting the basic thermal conductivity corresponding to the target preparation method to obtain the corrected thermal conductivity of the graphene to be measured; and calculating the horizontal temperature field of the graphene to be measured by the corrected thermal conductivity. Therefore, the method only needs to obtain the target preparation method and the actual density and the actual carbon-hydrogen ratio of the graphene to be measured, and can finally calculate the horizontal temperature field of the graphene to be measured. Compared with the current method of measuring the horizontal temperature field of graphene by specific measuring equipment, the method is more efficient and can also reduce costs.

Description

Technical Field

[0001] The present invention relates to the technical field of temperature measurement, and in particular to a method and device for measuring a horizontal temperature field. Background Art

[0002] As a two-dimensional material, graphene's horizontal temperature field is one of its key parameters. The horizontal temperature field of graphene can reflect the temperature distribution on the graphene surface, so the horizontal temperature field has an important influence on the performance of graphene. In particular, in the application process of graphene, it is usually necessary to first obtain its horizontal temperature field, and then combine its horizontal temperature field to determine the specific purpose and usage of graphene. Therefore, obtaining the horizontal temperature field of graphene is often a prerequisite for graphene application. For example, in heat dissipation equipment, when graphene needs to be used as a component material of the heat dissipation equipment, its horizontal temperature field needs to be obtained first.

[0003] In the system disclosed in patent CN218157642U, the first temperature value, the second temperature value and the third temperature value are determined respectively by thermocouples, infrared thermal imagers and temperature cloud maps, and then the horizontal temperature field is determined by comparing the first temperature value, the second temperature value and the third temperature value. In addition, in practical applications, methods such as micro-electrothermal systems and graphene temperature sensors can also be used to measure the horizontal temperature field of graphene.

[0004] However, the above-mentioned methods are mainly to measure the horizontal temperature field of graphene by combining specific measuring equipment. These measurement methods using specific measuring equipment are, on the one hand, inefficient and difficult to apply to scenarios that require large-scale and rapid acquisition of the horizontal temperature field of graphene. On the other hand, due to the use of specific measuring equipment, the cost is often high. Summary of the invention

[0005] The present invention provides a method and device for measuring a horizontal temperature field. The method of measuring the horizontal temperature field of graphene by using a specific measuring device leads to the problems of low efficiency and high cost.

[0006] In one aspect, the present invention provides a method for measuring a horizontal temperature field, comprising:

[0007] According to the target preparation method adopted by the graphene to be tested, selecting the basic thermal conductivity corresponding to the target preparation method;

[0008] Obtaining the actual density and actual carbon-hydrogen ratio of the graphene to be measured;

[0009] Determining a thermal conductivity correction value according to the actual density and the actual carbon-hydrogen ratio of the graphene to be measured;

[0010] Using the thermal conductivity correction value, correcting the basic thermal conductivity corresponding to the target preparation method to obtain the corrected thermal conductivity of the graphene to be tested;

[0011] The horizontal temperature field of the graphene to be measured is calculated by the corrected thermal conductivity.

[0012] In an optional embodiment of the present application, the method further includes:

[0013] Generate a basic thermal conductivity corresponding to a current preparation method in advance, wherein the current preparation method is specifically any one of various graphene preparation methods; and, in generating the basic thermal conductivity corresponding to the current preparation method, the following steps are included:

[0014] Obtaining graphene samples prepared by the current preparation method under multiple groups of different preparation parameters;

[0015] The thermal conductivity of each group of graphene samples was measured;

[0016] The average thermal conductivity of each group of graphene samples was calculated as the basic thermal conductivity corresponding to the current preparation method.

[0017] In an optional embodiment of the present application, the thermal conductivity of each group of graphene samples is measured respectively, specifically including measuring the thermal conductivity of each group of graphene samples respectively in the following manner:

[0018] irradiating the graphene sample with a laser so as to increase the temperature of the irradiated area of ​​the graphene sample;

[0019] Acquiring the actual temperature of the irradiated area and the actual temperature of the surrounding area of ​​the irradiated area in the graphene sample;

[0020] The thermal conductivity of the graphene sample is calculated according to the actual temperature of the irradiated area and the actual temperature of the surrounding area of ​​the irradiated area.

[0021] In an optional embodiment of the present application, obtaining the actual density and the actual carbon-hydrogen ratio of the graphene to be measured specifically includes: obtaining the actual density and the actual carbon-hydrogen ratio of the graphene to be measured input through a user operation interface.

[0022] In an optional embodiment of the present application, the method further includes: determining a target preparation method adopted for the graphene to be tested according to a selection operation performed by a user on a user operation interface.

[0023] In an optional embodiment of the present application, determining the thermal conductivity correction value according to the actual density and the actual carbon-hydrogen ratio of the graphene to be measured specifically includes:

[0024] Determining a first correction value of density to thermal conductivity according to the actual density of the graphene to be measured;

[0025] Determining a second correction value of the carbon-hydrogen ratio to thermal conductivity according to the actual carbon-hydrogen ratio of the graphene to be measured;

[0026] Calculating the thermal conductivity correction value according to the first correction value and the second correction value;

[0027] In an optional embodiment of the present application, according to the actual density of the graphene to be measured, determining a first correction value of density to thermal conductivity specifically includes calculating the first correction value by the following formula:

[0028] P1=α×(ρ 实际 -ρ 平均 );

[0029] Wherein, P1 is the calculated first correction value; α is the correlation coefficient between the density and thermal conductivity of graphene, and α is greater than 0; ρ 实际 is the actual density of the graphene to be measured; ρ 平均 The average density of graphene prepared by the target preparation method.

[0030] In an optional embodiment of the present application, according to the actual carbon-hydrogen ratio of the graphene to be measured, determining a second correction value of the carbon-hydrogen ratio to the thermal conductivity specifically includes calculating the second correction value by the following formula:

[0031] P2=β1×(Q 实际 -Q 平均 ) + β2×(Q 实际 -Q 平均 ) 2 ;

[0032] Wherein, P2 is the second correction value; β1 and β2 are correlation coefficients between the carbon-hydrogen ratio of graphene and thermal conductivity, wherein β1 and β2 are both greater than 0, and β1 is greater than β2; Q 实际 is the actual carbon-hydrogen ratio of the graphene to be measured; Q 平均 The average carbon-to-hydrogen ratio of graphene prepared by the target preparation method.

[0033] In an optional embodiment of the present application, the method is applied to an industrial computer of a heat dissipation device, wherein the industrial computer is provided with a user operation interface so that a user can input actual density and actual carbon-hydrogen ratio and perform selected operations through the user operation interface.

[0034] In another aspect, the present invention provides a device for measuring a horizontal temperature field, comprising:

[0035] A selection unit, configured to select a basic thermal conductivity corresponding to a target preparation method adopted by the graphene to be tested;

[0036] An acquisition unit, used for acquiring the actual density and the actual carbon-hydrogen ratio of the graphene to be measured;

[0037] A determination unit, used to determine a thermal conductivity correction value according to an actual density and an actual carbon-hydrogen ratio of the graphene to be measured;

[0038] A correction unit, configured to correct a basic thermal conductivity corresponding to the target preparation method using the thermal conductivity correction value, so as to obtain a corrected thermal conductivity of the graphene to be measured;

[0039] The second determining unit is used to determine the horizontal temperature field of the graphene to be measured through the corrected thermal conductivity.

[0040] The present invention provides a method for measuring a horizontal temperature field, the method comprising selecting a basic thermal conductivity corresponding to the target preparation method according to the target preparation method adopted by the graphene to be measured, then obtaining the actual density and actual carbon-hydrogen ratio of the graphene to be measured, then determining a thermal conductivity correction value according to the actual density and actual carbon-hydrogen ratio of the graphene to be measured, and then using the thermal conductivity correction value to correct the basic thermal conductivity corresponding to the target preparation method, thereby obtaining the corrected thermal conductivity of the graphene to be measured, and then calculating the horizontal temperature field of the graphene to be measured by the corrected thermal conductivity. Obviously, the method does not need to measure the horizontal temperature field of the graphene by a specific measuring device, but by the target preparation method adopted by the graphene to be measured, first selecting the basic thermal conductivity corresponding to the target preparation method, and then combining the actual density and actual carbon-hydrogen ratio of the graphene to be measured, to calculate the thermal conductivity correction value, and then using the thermal conductivity correction value to the basic thermal conductivity, to obtain the corrected thermal conductivity, so that the horizontal temperature field of the graphene to be measured can be calculated by the corrected thermal conductivity. Therefore, in the process of obtaining the horizontal temperature field of the graphene to be tested, it is only necessary to obtain the target preparation method adopted by the graphene to be tested, as well as the actual density and actual carbon-hydrogen ratio of the graphene to be tested, and finally to infer the horizontal temperature field of the graphene to be tested. Compared with the current method of measuring the horizontal temperature field of graphene through specific measuring equipment, this method is more efficient and more suitable for scenarios that require large-scale and rapid acquisition of the horizontal temperature field of graphene. In addition, since no specific measuring equipment is required, the cost can also be reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0042] Figure 1A schematic diagram of a specific process of a method for measuring a horizontal temperature field provided by the present invention;

[0043] Figure 2 A schematic diagram of a specific process of generating a basic thermal conductivity in the horizontal temperature field measurement method provided by the present invention;

[0044] Figure 3 A schematic diagram of the specific structure of a device for measuring a horizontal temperature field provided by the present invention;

[0045] Figure 4 It is a structural schematic diagram of the electronic device provided by the present invention. DETAILED DESCRIPTION

[0046] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be clearly and completely described below in conjunction with the drawings of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0047] As mentioned above, currently the horizontal temperature field of graphene is mainly measured by combining specific measuring equipment. These measurement methods using specific measuring equipment are, on the one hand, inefficient and difficult to apply to scenarios that require large-scale and rapid acquisition of the horizontal temperature field of graphene. On the other hand, due to the use of specific measuring equipment, the cost is often high.

[0048] In view of this, the embodiment of the present application provides a method and device for measuring a horizontal temperature field, which can be used to obtain the horizontal temperature field of graphene efficiently and at low cost. For ease of understanding, the embodiment of the present application can be described as a whole here. For example, the technical solution provided by the embodiment of the present application can be applied to software products or hardware products. For example, the method provided by the embodiment of the present application can be designed as an application (i.e., a software product), and then the application is installed in the industrial computer of the heat dissipation device to apply the method provided by the embodiment of the present application. For example, the method provided by the embodiment of the present application can also be implemented by a hardware product, and the method provided by the embodiment of the present application can be executed by the control chip of the industrial computer of the heat dissipation device.

[0049] like Figure 1 As shown, it is a flow chart of the method for measuring the horizontal temperature field provided in the embodiment of the present application. In this example, the method is applied to a software product as an example for explanation, for example, the application is installed in the industrial computer of the heat dissipation device. The method may include:

[0050] Step S11: According to the target preparation method adopted by the graphene to be tested, a basic thermal conductivity corresponding to the target preparation method is selected.

[0051] In step S11, the graphene to be tested specifically refers to the graphene whose horizontal temperature field needs to be measured, and the preparation method used when preparing the graphene to be tested is the target preparation method. For example, when a user needs to measure the horizontal temperature field of a graphene sample, the graphene sample is the graphene to be tested, and the preparation method used by the graphene to be tested is the target preparation method.

[0052] It should be noted that, in practical applications, graphene can usually be prepared by a variety of different preparation methods, and the graphene prepared by these different preparation methods, due to the different preparation principles, often has certain differences in thermal conductivity between the graphene prepared by different preparation methods, and this difference may be caused by differences in the purity of the graphene, the hydrogen content of the graphene, the specific surface area, etc. Among them, the preparation method of graphene can usually include micromechanical exfoliation, oxidation-reduction method, liquid phase exfoliation method, chemical vapor deposition method, SiC epitaxial growth method, etc., and there are often certain differences in the basic thermal conductivity between these different preparation methods.

[0053] For example, the hydrogen content of graphene prepared by micromechanical exfoliation is often lower than that of graphene prepared by redox method, and there are certain differences in other parameters of graphene prepared by the two preparation methods, which makes it inevitable that there will be certain differences in thermal conductivity between the graphene prepared by the two preparation methods. This difference is caused by the preparation method itself.

[0054] Of course, even if the graphene prepared by the same preparation method is different in preparation parameters such as temperature, pressure, reaction time, pH value, etc., the thermal conductivity of graphene will be different. Therefore, in this application, for different preparation methods, the basic thermal conductivity is determined respectively, and the basic thermal conductivity characterizes the average value of the thermal conductivity of the graphene prepared under different preparation parameters in the preparation method. For example, for a certain preparation method, even if there are fluctuations in its specific preparation parameters during the preparation process, the average value of the thermal conductivity of the graphene prepared under different preparation parameters in the preparation method is usually relatively stable; of course, after determining the basic thermal conductivity of the preparation method, the actual parameters of the graphene to be measured can be further combined to correct the basic thermal conductivity, so as to obtain the corrected thermal conductivity, and then determine the horizontal temperature field of the graphene to be measured.

[0055] Therefore, before step S11, for the graphene to be tested, the target preparation method used by the graphene to be tested can be obtained first, and then the basic thermal conductivity corresponding to the target preparation method is selected according to the target preparation method used by the graphene to be tested. For example, the basic thermal conductivities corresponding to various graphene preparation methods can be integrated in the application, so that after obtaining the target preparation method used by the graphene to be tested, the basic thermal conductivity corresponding to the target preparation method can be selected by query.

[0056] Among them, for the method of obtaining the target preparation method used by the graphene to be tested, for example, a user operation interface can be set in the industrial computer, so that the user can perform a selection operation through the user operation interface to input the target preparation method used by the graphene to be tested. For example, the user operation interface can include various preparation methods of graphene, and the user can directly select a certain preparation method, thereby inputting it into the industrial computer as the target preparation method used by the graphene to be tested.

[0057] Step S12: obtaining the actual density and the actual carbon-hydrogen ratio of the graphene to be measured.

[0058] Of course, the user can also input other parameters to the industrial computer through the above-mentioned user operation interface, for example, the user can also input the actual density and actual carbon-hydrogen ratio of the graphene to be measured through the user operation interface. Thus, in step S12, the specific method of obtaining the actual density and actual carbon-hydrogen ratio of the graphene to be measured can be to obtain the actual density and actual carbon-hydrogen ratio of the graphene to be measured input through the user operation interface.

[0059] The actual density of the graphene to be measured can be measured by a density measuring device or a related density measuring method, which is not specifically limited here. For example, after the user measures the actual density of the graphene to be measured by a density measuring device or a related density measuring method in advance, the user can input the actual density into the industrial computer through the user operation interface.

[0060] In practical applications, the actual carbon-to-hydrogen ratio of the graphene to be tested can usually be determined by an element analyzer. For example, a certain amount of graphene to be tested can be weighed and placed in an element analyzer for measurement to obtain the actual carbon-to-hydrogen ratio of the graphene to be tested. Of course, after obtaining the actual carbon-to-hydrogen ratio of the graphene to be tested, the user can input the actual carbon-to-hydrogen ratio into the industrial computer through the user operation interface.

[0061] Step S13: determining a thermal conductivity correction value according to the actual density and the actual carbon-hydrogen ratio of the graphene to be measured.

[0062] In the embodiments of the present application, relevant technicians have found through analysis that the density and carbon-hydrogen ratio of graphene have a great influence on its thermal conductivity. For example, when the density is within a certain range, the density and thermal conductivity show a positive correlation. Of course, the carbon-hydrogen ratio also has a great influence on the thermal conductivity of graphene. Therefore, the basic principle of the embodiments of the present application is to correct the basic thermal conductivity by the actual density and the actual carbon-hydrogen ratio on the basis of the basic thermal conductivity. In this way, in step S13, the thermal conductivity correction value is determined according to the actual density and the actual carbon-hydrogen ratio of the graphene to be measured.

[0063] There are usually multiple specific implementations of step S13 in practical applications. For example, one method can determine a first correction value of density to thermal conductivity based on the actual density of the graphene to be measured, and determine a second correction value of carbon-hydrogen ratio to thermal conductivity based on the actual carbon-hydrogen ratio of the graphene to be measured. After obtaining the first correction value and the second correction value, further calculate the thermal conductivity correction value based on the first correction value and the second correction value. For example, after obtaining the first correction value and the second correction value, the sum of the first correction value and the second correction value can be used as the calculated thermal conductivity correction value.

[0064] In addition, regarding the specific method of determining the first correction value of density to thermal conductivity based on the actual density of the graphene to be measured, it is found through measurements based on a large amount of data that within a certain density range, the effect of the density of graphene on its thermal conductivity is roughly linear, so the first correction value can be calculated by formula 1 as shown below.

[0065] P1=α×(ρ 实际 -ρ 平均 )Formula 1

[0066] In the formula 1, P1 is the calculated first correction value; α is the correlation coefficient between the density and thermal conductivity of graphene, wherein α is greater than 0, which means that the density and thermal conductivity of graphene are positively correlated. In practical applications, the specific value of α can be obtained through actual testing or estimated through experience; ρ 实际 is the actual density of the graphene to be measured; ρ 平均 The average density of graphene prepared by the target preparation method reflects the average value of the density of graphene prepared under various preparation parameters in the target preparation method.

[0067] For this 平均In practical applications, for example, multiple groups of graphene samples can be prepared by the target preparation method under multiple groups of different preparation parameters, and then the density of each group of graphene samples is measured, and the average density of each group of graphene samples is calculated. Since the average value is the average density of the graphene samples prepared under multiple groups of different preparation parameters in the same preparation method (i.e., the target preparation method), the average value can be used as the average density of the graphene prepared by the target preparation method, that is, ρ 平均 .

[0068] In practical applications, due to the 平均 The value of is more related to the preparation method, so it is usually possible to determine ρ in advance for various preparation methods by the above method. 平均 The average density ρ of graphene prepared by various preparation methods is determined by 平均 , so in formula 1, according to the ρ 平均 As a parameter, the ρ is directly obtained through the target preparation method. 平均 The value of .

[0069] By fitting the measured data, it is found that the relationship between the carbon-hydrogen ratio and thermal conductivity of graphene is not linear, and within a certain range of carbon-hydrogen ratio, it is roughly a quadratic function relationship. Therefore, according to the actual carbon-hydrogen ratio of the graphene to be measured, the specific method of determining the second correction value of the carbon-hydrogen ratio for thermal conductivity can be calculated by the following formula 2.

[0070] P2=β1×(Q 实际 -Q 平均 ) + β2×(Q 实际 -Q 平均 ) 2 Formula 2

[0071] In the second formula, P2 is the calculated second correction value; β1 and β2 are the correlation coefficients between the carbon-hydrogen ratio of graphene and the thermal conductivity, wherein β1 and β2 are both greater than 0, and β1 is usually greater than β2. In practical applications, the specific values ​​of β1 and β2 can be obtained through actual tests; Q 实际 is the actual carbon-hydrogen ratio of the graphene to be tested; Q 平均 The average carbon-to-hydrogen ratio of graphene prepared by the target preparation method reflects the average value of the carbon-to-hydrogen ratio of graphene prepared under various preparation parameters in the target preparation method.

[0072] In practical applications, for example, multiple groups of graphene samples can be prepared by the target preparation method under multiple groups of different preparation parameters, and then the carbon-hydrogen ratio of each group of graphene samples is measured, and the average carbon-hydrogen ratio of each group of graphene samples is calculated as the Q平均 .

[0073] Similar to ρ 平均 , because the Q 平均 The value is also more related to the preparation method, so the Q of graphene prepared by various preparation methods can usually be determined in advance. 平均 , so in formula 2, the Q of the target preparation method can be directly obtained through the target preparation method 平均 value, thereby improving efficiency.

[0074] By using the above formula 1 and formula 2, the first correction value of density to thermal conductivity and the second correction value of carbon-hydrogen ratio to thermal conductivity can be calculated respectively, and then the first correction value and the second correction value can be summed to calculate the thermal conductivity correction value, that is, the thermal conductivity correction value P=P1+P2.

[0075] Step S14: using the thermal conductivity correction value, correcting the basic thermal conductivity corresponding to the target preparation method to obtain the corrected thermal conductivity of the graphene to be measured.

[0076] After obtaining the thermal conductivity correction value through the above step S13, in step S14, the thermal conductivity correction value can be used to correct the basic thermal conductivity corresponding to the target preparation method, so as to obtain the corrected thermal conductivity of the graphene to be measured. For a specific correction method, for example, the sum of the thermal conductivity correction value and the basic thermal conductivity can be calculated to obtain the corrected thermal conductivity of the graphene to be measured. That is, the corrected thermal conductivity P'=P+P", wherein P' is the corrected thermal conductivity of the graphene to be measured, P is the thermal conductivity correction value, and P" is the basic thermal conductivity corresponding to the target preparation method.

[0077] Step S15: Calculate the horizontal temperature field of the graphene to be measured by using the corrected thermal conductivity.

[0078] After the corrected thermal conductivity of the graphene to be measured is obtained through the above-mentioned step S14, the horizontal temperature field of the graphene to be measured can be calculated through the corrected thermal conductivity. Specifically, the actual boundary temperature of the graphene to be measured can be further obtained, so as to calculate the horizontal temperature field of the graphene to be measured in combination with the heat conduction equation. Among them, the actual boundary temperature of the graphene to be measured can be input through the user operation interface; of course, since the cost of the temperature sensor is relatively low, the actual boundary temperature of the graphene to be measured can also be obtained by actually measuring the temperature sensor in practical applications. In addition, since the method of calculating the horizontal temperature field in combination with the heat conduction equation through thermal conductivity and boundary temperature is a currently known technology, it is not repeated here.

[0079] The method for measuring the horizontal temperature field provided by the embodiment of the present application is adopted, and the method includes selecting the basic thermal conductivity corresponding to the target preparation method according to the target preparation method adopted by the graphene to be measured, and then obtaining the actual density and actual carbon-hydrogen ratio of the graphene to be measured, and then determining the thermal conductivity correction value according to the actual density and actual carbon-hydrogen ratio of the graphene to be measured, and then using the thermal conductivity correction value to correct the basic thermal conductivity corresponding to the target preparation method, so as to obtain the corrected thermal conductivity of the graphene to be measured, and then calculating the horizontal temperature field of the graphene to be measured by the corrected thermal conductivity. Obviously, in this method, it is not necessary to measure the horizontal temperature field of the graphene by a specific measuring device, but by the target preparation method adopted by the graphene to be measured, first selecting the basic thermal conductivity corresponding to the target preparation method, and then combining the actual density and actual carbon-hydrogen ratio of the graphene to be measured, to calculate the thermal conductivity correction value, and then using the thermal conductivity correction value to the basic thermal conductivity, to obtain the corrected thermal conductivity, so that the horizontal temperature field of the graphene to be measured can be calculated by the corrected thermal conductivity. Therefore, in the process of obtaining the horizontal temperature field of the graphene to be tested, it is only necessary to obtain the target preparation method adopted by the graphene to be tested, as well as the actual density and actual carbon-hydrogen ratio of the graphene to be tested, and finally to infer the horizontal temperature field of the graphene to be tested. Compared with the current method of measuring the horizontal temperature field of graphene through specific measuring equipment, this method is more efficient and more suitable for scenarios that require large-scale and rapid acquisition of the horizontal temperature field of graphene. In addition, since no specific measuring equipment is required, the cost can also be reduced.

[0080] It should be further explained that in the embodiments of the present application, since the basic implementation principle is to correct the basic thermal conductivity based on the basic thermal conductivity (that is, the basic thermal conductivity corresponding to the target preparation method) in combination with the actual density and actual carbon-hydrogen ratio of the graphene to be tested, thereby obtaining the corrected thermal conductivity, and further inferring the horizontal temperature field of the graphene to be tested, it is crucial to determine the basic thermal conductivity corresponding to the preparation method, which can be further explained here.

[0081] In the method provided in the embodiment of the present application, the basic thermal conductivity corresponding to the current preparation method can be generated in advance for the current preparation method, wherein the current preparation method is specifically any one of various graphene preparation methods. In other words, any graphene preparation method can be used as the current preparation method and enter the method provided in the embodiment of the present application to generate the basic thermal conductivity corresponding to the current preparation method in advance. Figure 2 As shown, generating the basic thermal conductivity corresponding to the current preparation method includes the following steps:

[0082] Step S21: obtaining graphene samples prepared by the current preparation method under multiple sets of different preparation parameters.

[0083] For example, taking the preparation of graphene by the redox method as an example, multiple groups of graphene samples can be prepared by the redox method at different pH values. In order to improve the accuracy, the number of graphene samples can be 5 groups or more, and the larger the number, the higher the accuracy of the basic thermal conductivity corresponding to the current preparation method that is finally calculated.

[0084] Step S22: measuring the thermal conductivity of each group of graphene samples respectively.

[0085] In practical applications, there may be many specific implementation methods for step S22. The present application may use the following method to measure the thermal conductivity of each group of graphene samples. Specifically, the thermal conductivity of each group of graphene samples may be measured in the following manner: the graphene sample is irradiated with a laser so that the temperature of the irradiated area of ​​the graphene sample increases, and then the actual temperature of the irradiated area and the actual temperature of the surrounding area of ​​the irradiated area in the graphene sample are obtained, and then the thermal conductivity of the graphene sample is calculated based on the actual temperature of the irradiated area and the actual temperature of the surrounding area of ​​the irradiated area.

[0086] For example, we can select any group of graphene samples and use laser to irradiate a certain area (i.e., the irradiated area) in the graphene sample. In this way, the temperature of the irradiated area will obviously increase. Then, we can collect the actual temperature of the irradiated area and the actual temperature of the surrounding area of ​​the irradiated area. Obviously, the actual temperature of the irradiated area and the actual temperature of the surrounding area will have a temperature difference due to the heat conduction of the graphene sample. In this way, we can calculate the thermal conductivity of the graphene sample based on the actual temperature of the irradiated area and the actual temperature of the surrounding area of ​​the irradiated area. For example, the thermal conductivity of the graphene sample can be calculated based on the actual temperature of the irradiated area, the actual temperature of the surrounding area, and the distance between the areas.

[0087] Step S23: Calculate the average thermal conductivity of each group of graphene samples as the basic thermal conductivity corresponding to the current preparation method.

[0088] After the thermal conductivity of each group of graphene samples is measured and obtained through the above step S22, an average value (which may be an arithmetic average value) of the thermal conductivity of each group of graphene samples may be calculated, and the average value may be used as the basic thermal conductivity corresponding to the current preparation method.

[0089] Based on the same inventive concept as the method for measuring the horizontal temperature field provided in the embodiment of the present application, the embodiment of the present application can also provide a device for measuring the horizontal temperature field, such as Figure 3The specific structural diagram of the measuring device 30 is shown. If there is any unclear point in the embodiment of the device, please refer to the content in the method embodiment. The measuring device 30 may include: a selection unit 301, an acquisition unit 302, a determination unit 303, a correction unit 304 and a second determination unit 305, wherein:

[0090] A selection unit 301 is used to select a basic thermal conductivity corresponding to a target preparation method adopted by the graphene to be tested;

[0091] An acquisition unit 302 is used to acquire the actual density and the actual carbon-hydrogen ratio of the graphene to be measured;

[0092] A determination unit 303 is used to determine a thermal conductivity correction value according to the actual density and the actual carbon-hydrogen ratio of the graphene to be measured;

[0093] A correction unit 304 is used to correct the basic thermal conductivity corresponding to the target preparation method by using the thermal conductivity correction value to obtain the corrected thermal conductivity of the graphene to be measured;

[0094] The second determining unit 305 is used to determine the horizontal temperature field of the graphene to be measured by using the corrected thermal conductivity.

[0095] Since the measuring device 30 adopts the same inventive concept as the method for measuring the horizontal temperature field provided in the embodiment of the present application, the measuring device 30 can also solve the technical problem if the method can solve the technical problem. Specifically, it is obvious that the measuring device 30 does not need to use a specific measuring device to measure the horizontal temperature field of graphene, but first selects the basic thermal conductivity corresponding to the target preparation method adopted by the graphene to be measured, and then calculates the thermal conductivity correction value in combination with the actual density and actual carbon-hydrogen ratio of the graphene to be measured, and then uses the thermal conductivity correction value to the basic thermal conductivity to obtain the corrected thermal conductivity, so that the horizontal temperature field of the graphene to be measured can be inferred by the corrected thermal conductivity. Therefore, in the process of obtaining the horizontal temperature field of the graphene to be tested, it is only necessary to obtain the target preparation method adopted by the graphene to be tested, as well as the actual density and actual carbon-hydrogen ratio of the graphene to be tested, and finally to infer the horizontal temperature field of the graphene to be tested. Compared with the current method of measuring the horizontal temperature field of graphene through specific measuring equipment, this method is more efficient and more suitable for scenarios that require large-scale and rapid acquisition of the horizontal temperature field of graphene. In addition, since no specific measuring equipment is required, the cost can also be reduced.

[0096] In practical applications, by combining the measuring device 30 with other relevant technologies, such as adopting a distributed layout of the measuring device 30, or combining the relevant technologies of cloud computing, the deployment of the measuring device 30 in the cloud is within the protection scope of this application. In addition, the measuring device 30 is combined with a specific hardware device, such as deploying the measuring device 30 in the industrial computer of the heat dissipation device, thereby improving the commercial value of the heat dissipation device.

[0097] In practical applications, the measuring device 30 may further include a basic thermal conductivity generating unit for generating a basic thermal conductivity corresponding to the current preparation method in advance, wherein the current preparation method is specifically any one of various graphene preparation methods; and, in generating the basic thermal conductivity corresponding to the current preparation method, it may include: obtaining graphene samples prepared by the current preparation method under multiple groups of different preparation parameters; measuring the thermal conductivity of each group of graphene samples respectively; and calculating the average thermal conductivity of each group of graphene samples as the basic thermal conductivity corresponding to the current preparation method.

[0098] Among them, measuring the thermal conductivity of each group of graphene samples respectively can specifically include measuring the thermal conductivity of each group of graphene samples respectively in the following manner: irradiating the graphene sample with a laser to increase the temperature of the irradiated area in the graphene sample; obtaining the actual temperature of the irradiated area and the actual temperature of the surrounding area of ​​the irradiated area in the graphene sample; and calculating the thermal conductivity of the graphene sample according to the actual temperature of the irradiated area and the actual temperature of the surrounding area of ​​the irradiated area.

[0099] Wherein, obtaining the actual density and the actual carbon-hydrogen ratio of the graphene to be measured may specifically include: obtaining the actual density and the actual carbon-hydrogen ratio of the graphene to be measured input through a user operation interface.

[0100] The measuring device 30 may further include a target preparation method determination unit, which is used to determine the target preparation method used for the graphene to be measured according to the selected operation of the user on the user operation interface.

[0101] Among them, determining the thermal conductivity correction value according to the actual density and actual carbon-hydrogen ratio of the graphene to be measured can specifically include: determining a first correction value of density to thermal conductivity according to the actual density of the graphene to be measured; determining a second correction value of carbon-hydrogen ratio to thermal conductivity according to the actual carbon-hydrogen ratio of the graphene to be measured; and calculating the thermal conductivity correction value according to the first correction value and the second correction value.

[0102] Wherein, determining the first correction value of density to thermal conductivity according to the actual density of the graphene to be measured may specifically include calculating the first correction value by the following formula:

[0103] P1=α×(ρ 实际 -ρ 平均 );

[0104] Wherein, P1 is the calculated first correction value; α is the correlation coefficient between the density and thermal conductivity of graphene, and α is greater than 0; ρ 实际 is the actual density of the graphene to be measured; ρ 平均 The average density of graphene prepared by the target preparation method.

[0105] Wherein, determining the second correction value of the carbon-hydrogen ratio to the thermal conductivity according to the actual carbon-hydrogen ratio of the graphene to be measured may specifically include calculating the second correction value by the following formula:

[0106] P2=β1×(Q 实际 -Q 平均 ) + β2×(Q 实际 -Q 平均 ) 2 ;

[0107] Wherein, P2 is the second correction value; β1 and β2 are correlation coefficients between the carbon-hydrogen ratio of graphene and thermal conductivity, wherein β1 and β2 are both greater than 0, and β1 is usually greater than β2; Q 实际 is the actual carbon-hydrogen ratio of the graphene to be measured; Q 平均 The average carbon-to-hydrogen ratio of graphene prepared by the target preparation method.

[0108] The measuring device 30 can be applied to an industrial computer of a heat dissipation device, wherein the industrial computer is provided with a user operation interface so that the user can input the actual density and the actual carbon-hydrogen ratio through the user operation interface, and perform selection operations.

[0109] Figure 4 An example of a physical structure diagram of an electronic device is shown in FIG. Figure 4As shown, the electronic device may include: a processor (processor) 410, a communication interface (Communications Interface) 420, a memory (memory) 430 and a communication bus 440, wherein the processor 410, the communication interface 420, and the memory 430 complete mutual communication through the communication bus 440. The processor 410 can call the logic instructions in the memory 430 to execute the horizontal temperature field measurement method provided in the embodiment of the present application, the method comprising selecting the basic thermal conductivity corresponding to the target preparation method according to the target preparation method adopted by the graphene to be measured; obtaining the actual density and actual carbon-hydrogen ratio of the graphene to be measured; determining the thermal conductivity correction value according to the actual density and actual carbon-hydrogen ratio of the graphene to be measured; using the thermal conductivity correction value, correcting the basic thermal conductivity corresponding to the target preparation method to obtain the corrected thermal conductivity of the graphene to be measured; and calculating the horizontal temperature field of the graphene to be measured by the corrected thermal conductivity.

[0110] Obviously, since the processor 410 can call the logical instructions in the memory 430 to execute the method provided in the embodiment of the present application, in the process of obtaining the horizontal temperature field of the graphene to be tested, it is only necessary to obtain the target preparation method adopted by the graphene to be tested, as well as the actual density and actual carbon-hydrogen ratio of the graphene to be tested, and the horizontal temperature field of the graphene to be tested can be finally inferred. Compared with the current method of measuring the horizontal temperature field of graphene through specific measuring equipment, it is more efficient and more suitable for scenarios that require large-scale and rapid acquisition of the horizontal temperature field of graphene. In addition, since no specific measuring equipment is required, the cost can also be reduced, thereby solving the problems in the prior art.

[0111] In addition, the logic instructions in the above-mentioned memory 430 can be implemented in the form of a software functional unit and can be stored in a computer-readable storage medium when it is sold or used as an independent product. Based on this understanding, the technical solution of the present invention, in essence, or the part that contributes to the prior art or the part of the technical solution, can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including a number of instructions for a computer device (which can be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the method described in each embodiment of the present invention. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), disk or optical disk, etc. Various media that can store program codes.

[0112] On the other hand, the present invention also provides a computer program product, which includes a computer program. The computer program can be stored on a non-transitory computer-readable storage medium. When the computer program is executed by a processor, the computer can execute the horizontal temperature field measurement method provided in the embodiment of the present application, the method including selecting a basic thermal conductivity corresponding to the target preparation method adopted by the graphene to be measured; obtaining the actual density and actual carbon-hydrogen ratio of the graphene to be measured; determining a thermal conductivity correction value based on the actual density and actual carbon-hydrogen ratio of the graphene to be measured; using the thermal conductivity correction value, correcting the basic thermal conductivity corresponding to the target preparation method to obtain the corrected thermal conductivity of the graphene to be measured; and inferring the horizontal temperature field of the graphene to be measured by the corrected thermal conductivity.

[0113] Obviously, since the computer program is executed by the processor, the computer can execute the horizontal temperature field measurement method provided in the embodiment of the present application. Therefore, in the process of obtaining the horizontal temperature field of the graphene to be measured, it is only necessary to obtain the target preparation method adopted by the graphene to be measured, as well as the actual density and actual carbon-hydrogen ratio of the graphene to be measured, and finally the horizontal temperature field of the graphene to be measured can be inferred. Compared with the current method of measuring the horizontal temperature field of graphene through specific measuring equipment, it is more efficient and more suitable for scenarios that require large-scale and rapid acquisition of the horizontal temperature field of graphene. Moreover, since no specific measuring equipment is required, the cost can also be reduced, thereby solving the problems in the prior art.

[0114] On the other hand, the present invention also provides a non-transitory computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, is the method for measuring the horizontal temperature field provided in an embodiment of the present application.

[0115] The device embodiments described above are merely illustrative, wherein the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, they may be located in one place, or they may be distributed on multiple network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the scheme of this embodiment. Ordinary technicians in this field can understand and implement it without paying creative labor.

[0116] Through the description of the above implementation methods, those skilled in the art can clearly understand that each implementation method can be implemented by means of software plus a necessary general hardware platform, and of course, can also be implemented by hardware. Based on this understanding, the above technical solution is essentially or the part that contributes to the prior art can be embodied in the form of a software product, and the computer software product can be stored in a computer-readable storage medium, such as ROM / RAM, a disk, an optical disk, etc., including a number of instructions for a computer device (which can be a personal computer, a server, or a network device, etc.) to execute the methods described in each embodiment or some parts of the embodiments.

[0117] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention 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 make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A method for measuring a horizontal temperature field, characterized in that: include: According to the target preparation method adopted by the graphene to be tested, selecting the basic thermal conductivity corresponding to the target preparation method; Obtaining the actual density and actual carbon-hydrogen ratio of the graphene to be measured; Determining a thermal conductivity correction value according to the actual density and the actual carbon-hydrogen ratio of the graphene to be measured; Using the thermal conductivity correction value, correcting the basic thermal conductivity corresponding to the target preparation method to obtain the corrected thermal conductivity of the graphene to be tested; The horizontal temperature field of the graphene to be measured is calculated by the corrected thermal conductivity.

2. The method according to claim 1, characterized in that The method further comprises: Generate a basic thermal conductivity corresponding to a current preparation method in advance, wherein the current preparation method is specifically any one of various graphene preparation methods; and, in generating the basic thermal conductivity corresponding to the current preparation method, the following steps are included: Obtaining graphene samples prepared by the current preparation method under multiple groups of different preparation parameters; The thermal conductivity of each group of graphene samples was measured; The average thermal conductivity of each group of graphene samples was calculated as the basic thermal conductivity corresponding to the current preparation method.

3. The method according to claim 2, characterized in that The thermal conductivity of each group of graphene samples is measured respectively, specifically, for each group of graphene samples, the thermal conductivity is measured by the following method: irradiating the graphene sample with a laser so as to increase the temperature of the irradiated area of ​​the graphene sample; Acquiring the actual temperature of the irradiated area and the actual temperature of the surrounding area of ​​the irradiated area in the graphene sample; The thermal conductivity of the graphene sample is calculated according to the actual temperature of the irradiated area and the actual temperature of the surrounding area of ​​the irradiated area.

4. The method according to claim 1, characterized in that: Acquiring the actual density and the actual carbon-hydrogen ratio of the graphene to be measured specifically includes: acquiring the actual density and the actual carbon-hydrogen ratio of the graphene to be measured input through a user operation interface.

5. The method according to claim 1, characterized in that The method further includes: determining a target preparation method adopted by the graphene to be tested according to a selection operation performed by a user on a user operation interface.

6. The method according to claim 1, characterized in that Determining a thermal conductivity correction value according to the actual density and the actual carbon-hydrogen ratio of the graphene to be measured specifically includes: Determining a first correction value of density to thermal conductivity according to the actual density of the graphene to be measured; Determining a second correction value of the carbon-hydrogen ratio to thermal conductivity according to the actual carbon-hydrogen ratio of the graphene to be measured; The thermal conductivity correction value is calculated according to the first correction value and the second correction value.

7. The method according to claim 6, characterized in that According to the actual density of the graphene to be measured, a first correction value of density to thermal conductivity is determined, specifically comprising calculating the first correction value by the following formula: P1=α×(ρ 实际 - r 平均 ); Wherein, P1 is the calculated first correction value; α is the correlation coefficient between the density and thermal conductivity of graphene, and α is greater than 0; ρ 实际 is the actual density of the graphene to be measured; ρ 平均 The average density of graphene prepared by the target preparation method.

8. The method according to claim 6, characterized in that According to the actual carbon-hydrogen ratio of the graphene to be measured, a second correction value of the carbon-hydrogen ratio to the thermal conductivity is determined, specifically comprising calculating the second correction value by the following formula: P2=β1×(Q 实际 - Q 平均 ) + β2×(Q 实际 - Q 平均 ) 2 ; Wherein, P2 is the second correction value; β1 and β2 are correlation coefficients between the carbon-hydrogen ratio of graphene and thermal conductivity, wherein β1 and β2 are both greater than 0, and β1 is greater than β2; Q 实际 is the actual carbon-hydrogen ratio of the graphene to be measured; Q 平均 The average carbon-to-hydrogen ratio of graphene prepared by the target preparation method.

9. The method according to claim 1, characterized in that: The method is applied to an industrial computer of a heat dissipation device, wherein the industrial computer is provided with a user operation interface, so that a user can input actual density and actual carbon-hydrogen ratio through the user operation interface, and perform selection operations.

10. A device for measuring horizontal temperature field, characterized in that: include: A selection unit, configured to select a basic thermal conductivity corresponding to a target preparation method adopted by the graphene to be tested; An acquisition unit, used for acquiring the actual density and the actual carbon-hydrogen ratio of the graphene to be measured; A determination unit, used to determine a thermal conductivity correction value according to an actual density and an actual carbon-hydrogen ratio of the graphene to be measured; A correction unit, configured to correct a basic thermal conductivity corresponding to the target preparation method using the thermal conductivity correction value, so as to obtain a corrected thermal conductivity of the graphene to be measured; The second determining unit is used to determine the horizontal temperature field of the graphene to be measured through the corrected thermal conductivity.

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