Method, device and equipment for determining reference parameters of parts in vehicle, medium and product

Abstract

The invention discloses a reference parameter determination method, device and equipment for parts in a vehicle, a medium and a product. The method comprises the following steps: acquiring a first concentration threshold value and a second concentration threshold value of volatile organic compounds in a vehicle, wherein a second temperature corresponding to the second concentration threshold value is higher than a first temperature corresponding to the first concentration threshold value; simulation is carried out based on the first predicted initial emission concentration, the distribution coefficient and the diffusion coefficient of the in-vehicle part at the first temperature to obtain a first alternative volatile organic compound concentration of the in-vehicle part, and simulation is carried out based on the second predicted initial emission concentration, the distribution coefficient and the diffusion coefficient of the in-vehicle part at the second temperature to obtain a second alternative volatile organic compound concentration of the in-vehicle part; and obtaining a second alternative volatile organic compound concentration of the in-vehicle part, and determining the minimum value of the first alternative volatile organic compound concentration and the second alternative volatile organic compound concentration as the reference volatile organic compound concentration of the in-vehicle part. Through the technical scheme of the invention, the reference parameter determination efficiency and accuracy can be improved.

Description

Technical Field

[0001] Embodiments of the present invention relate to the technical field of vehicles, and in particular, to a method, device, equipment, medium and product for determining reference parameters of in-vehicle components. Background Art

[0002] In-vehicle components such as seats, instrument panels, carpets, ceilings, and sealing strips are generally made of petrochemical products such as plastics, leathers, and adhesives, and contain a certain amount of volatile organic compound components. When the concentration of volatile organic compounds in the vehicle is relatively high, it will endanger the health of the driver and passengers. Therefore, it is necessary to set a limit value for the concentration of volatile organic compounds in the vehicle. When the measured concentration of volatile organic compounds in the vehicle exceeds the limit value, it is considered that the volatile organic compounds in the vehicle do not meet the standard.

[0003] Generally, the method of reducing the concentration of volatile organic compounds in the vehicle is to reduce the concentration of volatile organic compounds contained in the in-vehicle components before loading. Reducing the concentration of volatile organic compounds contained in the in-vehicle components before loading can effectively improve the air quality in the vehicle and ensure the health of the driver and passengers. However, reducing the concentration of volatile organic compounds in the components requires the use of more environmentally friendly raw materials or more environmental protection treatment processes, which will increase the cost.

[0004] In order to minimize the cost on the premise that the concentration of volatile organic compounds in the vehicle meets the standard, the massive test experience method is generally used to statistically obtain the limit value of the concentration of volatile organic compounds in the in-vehicle components. There are the following problems with the above method: First, it takes a long time; second, the accuracy of the statistical results is relatively low. Summary of the Invention

[0005] Embodiments of the present invention provide a method, device, equipment, medium and product for determining reference parameters of in-vehicle components, which can improve the efficiency and accuracy of determining the reference parameters of in-vehicle components.

[0006] According to one aspect of the present invention, there is provided a method for determining reference parameters of in-vehicle components, including:

[0007] Obtaining a first concentration threshold and a second concentration threshold of volatile organic compounds in the vehicle, where the second temperature corresponding to the second concentration threshold is higher than the first temperature corresponding to the first concentration threshold;

[0008] Performing a simulation based on the first predicted initial emission concentration, partition coefficient, and diffusion coefficient of the in-vehicle component at the first temperature to obtain a first alternative volatile organic compound concentration of the in-vehicle component, where the first predicted initial emission concentration of the in-vehicle component at the first temperature is determined according to the first concentration threshold and a first adjustment parameter;

[0009] Performing simulation based on the second predicted initial emission concentration, partition coefficient, and diffusion coefficient of the in-vehicle component at the second temperature to obtain the second alternative volatile organic compound concentration of the in-vehicle component, wherein the second predicted initial emission concentration of the in-vehicle component at the second temperature is determined according to the second concentration threshold and the second adjustment parameter;

[0010] Determine the minimum value between the first alternative volatile organic compound concentration and the second alternative volatile organic compound concentration as the reference concentration of volatile organic compounds of the in-vehicle component.

[0011] According to another aspect of the present invention, there is provided a device for determining reference parameters of an in-vehicle component, the device comprising:

[0012] A concentration threshold acquisition module, configured to acquire a first concentration threshold and a second concentration threshold of volatile organic compounds in the vehicle, wherein the second temperature corresponding to the second concentration threshold is higher than the first temperature corresponding to the first concentration threshold;

[0013] A first alternative volatile organic compound concentration determination module, configured to perform simulation based on the first predicted initial emission concentration, partition coefficient, and diffusion coefficient of the in-vehicle component at the first temperature to obtain the first alternative volatile organic compound concentration of the in-vehicle component, wherein the first predicted initial emission concentration of the in-vehicle component at the first temperature is determined according to the first concentration threshold and the first adjustment parameter;

[0014] A second alternative volatile organic compound concentration determination module, configured to perform simulation based on the second predicted initial emission concentration, partition coefficient, and diffusion coefficient of the in-vehicle component at the second temperature to obtain the second alternative volatile organic compound concentration of the in-vehicle component, wherein the second predicted initial emission concentration of the in-vehicle component at the second temperature is determined according to the second concentration threshold and the second adjustment parameter;

[0015] A reference concentration determination module for volatile organic compounds of the in-vehicle component, configured to determine the minimum value between the first alternative volatile organic compound concentration and the second alternative volatile organic compound concentration as the reference concentration of volatile organic compounds of the in-vehicle component.

[0016] According to another aspect of the present invention, there is provided an electronic device, the electronic device comprising:

[0017] At least one processor; and

[0018] A memory communicatively connected to the at least one processor; wherein,

[0019] The memory stores a computer program executable by the at least one processor, and when the computer program is executed by the at least one processor, the at least one processor is enabled to execute the method for determining reference parameters of in-vehicle components according to any embodiment of the present invention.

[0020] According to another aspect of the present invention, there is provided a computer-readable storage medium storing computer instructions for causing a processor to implement the method for determining reference parameters of in-vehicle components according to any embodiment of the present invention when executed.

[0021] According to another aspect of the present invention, there is provided a computer program product, and when the computer program is executed by a processor, it implements the method for determining reference parameters of in-vehicle components as described in any one of the embodiments of the present invention.

[0022] The technical solution of this embodiment, by obtaining a first concentration threshold and a second concentration threshold of volatile organic compounds in the vehicle, where the second temperature corresponding to the second concentration threshold is higher than the first temperature corresponding to the first concentration threshold; based on the first predicted initial emission concentration, partition coefficient, and diffusion coefficient of in-vehicle components at the first temperature for simulation to obtain a first alternative volatile organic compound concentration of in-vehicle components, and based on the second predicted initial emission concentration, partition coefficient, and diffusion coefficient of in-vehicle components at the second temperature for simulation to obtain a second alternative volatile organic compound concentration of in-vehicle components, and determining the minimum value of the first alternative volatile organic compound concentration and the second alternative volatile organic compound concentration as the reference concentration of volatile organic compounds of in-vehicle components, can improve the efficiency and accuracy of determining reference parameters.

[0023] It should be understood that the content described in this part is not intended to identify the key or important features of the embodiments of the present invention, nor is it used to limit the scope of the present invention. Other features of the present invention will become easily understood through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention, and thus should not be regarded as limiting the scope. For those of ordinary skill in the art, other related drawings can be obtained based on these drawings without creative efforts.

[0025] Figure 1 is a flowchart of the first method for determining reference parameters of in-vehicle components in the embodiments of the present invention;

[0026] Figure 2 is a flowchart of the second method for determining reference parameters of in-vehicle components in the embodiments of the present invention;

[0027] Figure 3 It is a schematic structural diagram of a device for determining reference parameters of in-vehicle components in an embodiment of the present invention;

[0028] Figure 4 It is a schematic structural diagram of an electronic device in an embodiment of the present invention. Detailed implementation manners

[0029] In order to enable those skilled in the art to better understand the solution of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below 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. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0030] It should be noted that the terms "first", "second", etc. in the description and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects, and do not necessarily need to be used to describe a specific order or sequence. It should be understood that such data can be interchanged under appropriate circumstances so that the embodiments of the present invention described here can be implemented in an order different from those illustrated or described here. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusion. For example, a process, method, system, product or device including a series of steps or units does not necessarily have to be limited to those steps or units clearly listed, but may include other steps or units not clearly listed or inherent to these processes, methods, products or devices.

[0031] It can be understood that before using the technical solutions disclosed in the embodiments of the present disclosure, the types, usage scopes, usage scenarios, etc. of the personal information involved in the present disclosure should be informed to users and the authorization of users should be obtained in an appropriate manner in accordance with relevant laws and regulations.

[0032] In the related art in this field, in-vehicle components produced from petroleum-based chemical raw materials will emit volatile organic compounds into the vehicle cabin. When the concentration of volatile organic compounds in the vehicle is relatively high, it will endanger the physical health of the driver and passengers. Therefore, a maximum allowable limit value needs to be set for the concentration of volatile organic compounds in the vehicle. When the measured concentration of volatile organic compounds in the vehicle exceeds the limit value, it is considered that the concentration of volatile organic compounds in the vehicle does not meet the standard and technical means need to be used to reduce the concentration of volatile organic compounds in the vehicle.

[0033] The most commonly used technical means is to separately reduce the VOC concentrations of components such as automotive seats, instrument panels, lower instrument panels, door trim panels, pillar sills, rear quarter panels, carpets, headliners, and trunk lids. Reducing the VOC concentrations of these components requires the use of more environmentally friendly raw materials or more environmental protection treatment processes, which will increase costs. The greater the degree of reduction, the higher the cost.

[0034] In order to minimize costs on the premise that the concentration of volatile organic compounds in the vehicle meets the standard, it is necessary to establish a quantitative relationship between the limit value of the concentration of volatile organic compounds in the vehicle and the limit values of the concentrations of volatile organic compounds in each component. Thus, it is only necessary to control the concentration of volatile organic compounds in each component not to exceed its limit value to predict that the concentration of volatile organic compounds in the vehicle will not exceed the limit value.

[0035] Currently, there are mainly three technical solutions to establish the quantitative relationship between the limit value of the concentration of volatile organic compounds in the vehicle and the limit values of the concentrations of volatile organic compounds in each component, which are described separately as follows.

[0036] The first existing technical solution: is the massive test experience method currently used by most automotive enterprises, which takes several months, has poor timeliness, lacks theoretical derivation, and has poor rationality. Specifically, the massive test experience method conducts tests on the VOC concentrations of each component and the whole vehicle produced by them, accumulates data, analyzes the data change trend, forms trend - directional or semi - quantitative experience, and sets the limit values of the VOC concentrations of each component based on experience to achieve the decomposition of the vehicle index to the component index. This method requires the actual production of the whole vehicle and the conduct of VOC concentration tests. If the VOC concentration in the vehicle does not meet the standard, it is necessary to reduce the VOC concentrations of each component and then produce the whole vehicle again and conduct VOC concentration tests. This process is repeated for multiple rounds, consuming a long time and delaying the new vehicle launch plan. Moreover, it is difficult to analyze the accurate quantitative correlation between the VOC concentration of the whole vehicle and the VOC concentrations of each component, and the rationality of the limit values of the VOC concentrations of the components set based on experience is insufficient, and the risk level is difficult to evaluate.

[0037] The second existing technical solution: is the special design test analysis method used by a few automotive enterprises, which takes several weeks and has relatively poor timeliness. Place each component in a sealed test chamber with a volume equivalent to that of the passenger compartment. By successively removing a certain component (the one - removal method), or only placing a certain component each time and controlling the initial VOC concentration in the sealed test chamber (the one - remaining method), and then conducting VOC concentration tests, to analyze the contribution of a certain component to the VOC concentration in the vehicle, and then set the limit values of the VOC concentrations of each component. Compared with the first existing technical solution, this method saves the actual production link of the whole vehicle and multiple rounds of repeated tests, but still requires at least one VOC concentration test for each type of component, consuming a long time.

[0038] The third prior art solution: It is the computer numerical simulation analysis method used by a very small number of automobile enterprises, which takes several hours to several days and has poor timeliness. By using the key emission parameters of volatile organic compounds of each component, including the initial emission concentration, partition coefficient, diffusion coefficient, emission thickness, emission area, ambient temperature, emission time, emission space, the layout position between each component, etc., a simulation emission model is constructed in the computer, and the concentration of volatile organic compounds in the vehicle interior is obtained through numerical calculation. If the concentration of volatile organic compounds in the vehicle interior obtained by simulation calculation does not meet the standard, then the initial emission concentration of each component is reduced and the simulation calculation is performed again, repeating this process for multiple rounds. Until the concentration of volatile organic compounds in the vehicle interior obtained by simulation calculation meets the standard, and then using the initial emission concentration of each component and other key emission parameters at this time, the concentration limit values of volatile organic compounds of each component are respectively obtained through simulation calculation. Compared with the first two prior art solutions, this method saves the actual emission test link of volatile organic compounds of the whole vehicle or each component, and instead performs the simulation emission test of volatile organic compounds in the computer program, so it takes less time, but still needs to repeatedly perform the simulation calculation including all components for multiple rounds. In the case of limited computer computing power, it still takes a long time to wait to get the result.

[0039] In view of the problems existing in the related art, the present disclosure proposes a method for determining reference parameters of vehicle interior components. This method for determining reference parameters of vehicle interior components can be used to determine the reference parameters of vehicle interior components, and can improve the efficiency and accuracy of determining the reference parameters of vehicle interior components. The following details the implementation of determining the reference parameters of vehicle interior components in the embodiments of the present invention:

[0040] Embodiment 1

[0041] Figure 1 It is a flowchart of the first method for determining reference parameters of vehicle interior components provided by an embodiment of the present invention. This embodiment is applicable to the situation of determining reference parameters of vehicle interior components. This method can be executed by the device for determining reference parameters of vehicle interior components in the embodiments of the present invention. The device can be implemented in software and / or hardware, such as Figure 1 As shown, the method specifically includes the following steps:

[0042] S101. Obtain a first concentration threshold and a second concentration threshold of volatile organic compounds in the vehicle interior, where the second temperature corresponding to the second concentration threshold is higher than the first temperature corresponding to the first concentration threshold.

[0043] In this embodiment, volatile organic compounds (VOCs) generally refer to organic compounds with a boiling point not exceeding 250°C, a saturated vapor pressure exceeding 133.32 Pa at room temperature, and can exist in the air in the form of vapor at normal temperature. Volatile organic compounds include benzene, toluene, ethylbenzene, xylene, styrene, formaldehyde, acetaldehyde, acrolein, etc. When the concentration of volatile organic compounds is relatively high, it will endanger the physical health of vehicle occupants.

[0044] In this embodiment, the first concentration threshold can be a normal temperature threshold, and the second concentration threshold can be a high temperature threshold. The concentration threshold can also be called the concentration limit value, which is the concentration artificially set by automobile enterprises when managing the health and environmental protection performance of products. When the temperature inside the vehicle is the first temperature, if the measured value of the volatile organic compound concentration inside the vehicle is higher than the first concentration threshold, the whole vehicle does not meet the standard; when the temperature inside the vehicle is the second temperature, if the measured value of the volatile organic compound concentration inside the vehicle is higher than the second concentration threshold, the whole vehicle does not meet the standard. The first concentration threshold includes the first concentration thresholds of various volatile organic compounds. For example, it can be that the first concentration threshold includes: the first concentration threshold of benzene, the first concentration threshold of toluene, the first concentration threshold of ethylbenzene, the first concentration threshold of xylene, the first concentration threshold of styrene, the first concentration threshold of formaldehyde, the first concentration threshold of acetaldehyde, the first concentration threshold of acrolein, etc. The second concentration threshold includes the second concentration thresholds of various volatile organic compounds. For example, it can be that the second concentration threshold includes: the second concentration threshold of benzene, the second concentration threshold of toluene, the second concentration threshold of ethylbenzene, the second concentration threshold of xylene, the second concentration threshold of styrene, the second concentration threshold of formaldehyde, the second concentration threshold of acetaldehyde, the second concentration threshold of acrolein, etc.

[0045] In this embodiment, the first temperature can be 25°C, and the second temperature can be 65°C.

[0046] S102. Perform simulation based on the first predicted initial emission concentration, partition coefficient, and diffusion coefficient of the vehicle interior components at the first temperature to obtain the first alternative volatile organic compound concentration of the vehicle interior components.

[0047] In this embodiment, the first predicted initial emission concentration of the vehicle interior components at the first temperature is determined according to the first concentration threshold and the first adjustment parameter.

[0048] In this embodiment, the initial emission concentration is the cumulative concentration of a certain VOC contained in the component that can be emitted into the surrounding air from the zero moment to an infinite time, represented by the symbol C0, and the unit is μg / m 3 , and the subscript "0" represents "zero moment".

[0049] In this embodiment, the partition coefficient is a thermodynamic term, denoted by the symbol K, which is dimensionless. The partition coefficient is a parameter that describes the partitioning equilibrium of volatile organic compounds between a gas and the surface of a solid. It represents the concentration ratio of VOCs in the gas phase and the solid phase under specific conditions. The partition coefficient can be determined experimentally. For example, by switching between the sealed and ventilation modes of an environmental chamber, adsorption and emission experiments are conducted on fiber fabric samples to determine the equilibrium concentration of VOCs in the environmental chamber in the sealed state and the hourly concentration of VOCs in the direct current ventilation state. After the VOC emission from the component reaches the concentration equilibrium state, the partition coefficient is the ratio of the VOC concentration C m on the surface of the component to the VOC concentration C a in the surrounding air, that is, K = C m / C a . At a certain temperature and pressure, the partition coefficient of a certain component is a constant, which can be obtained by a mature test method and recorded in a table for reference.

[0050] In this embodiment, the diffusion coefficient is the rate of natural diffusion of a certain VOC in a certain interior component from a higher concentration position to a lower concentration position due to molecular thermal motion and the existence of a concentration gradient, denoted by the symbol D, with the unit of m 2 / s.

[0051] In this embodiment, the first adjustment parameter can be determined according to the partition coefficient and reduction ratio of the vehicle interior component at the first temperature. It should be noted that the first adjustment parameters of different vehicle interior components may be different.

[0052] In this embodiment, the vehicle interior component can be an interior component, such as a seat, instrument panel, carpet, ceiling, sealing strip, etc.

[0053] In this embodiment, the partition coefficient of the vehicle interior component at the second temperature can be obtained by querying the corresponding relationship table of components, temperature, and partition coefficient. For example, the corresponding relationship table of components, temperature, and partition coefficient can include: the partition coefficient of component A1 at temperature B1 is K A1，B1 , the partition coefficient of component A1 at temperature B2 is K A1，B2 , the partition coefficient of component A2 at temperature B1 is K A2，B1 , and the partition coefficient of component A2 at temperature B2 is K A2，B2 .

[0054] In this embodiment, the diffusion coefficient of the vehicle interior component at the second temperature can be obtained by querying the corresponding relationship table of components, temperature, and diffusion coefficient. For example, the corresponding relationship table of components, temperature, and diffusion coefficient can include: the diffusion coefficient of component A1 at temperature B1 is D A1，B1, the diffusion coefficient of component A1 at temperature B2 is D A1，B2 , the diffusion coefficient of component A2 at temperature B1 is D A2，B1 , the diffusion coefficient of component A2 at temperature B2 is D A2，B2 .

[0055] In this embodiment, the partition coefficient and diffusion coefficient of the in-vehicle components at the second temperature can be obtained by querying the corresponding relationship table of components, temperature, partition coefficient and diffusion coefficient. The corresponding relationship table of components, temperature, partition coefficient and diffusion coefficient may include: the partition coefficient of component A1 at temperature B1 is K A1，B1 , and the diffusion coefficient is D A1，B1 , the partition coefficient of component A1 at temperature B2 is K A1，B2 [[ID=1&]]], and the diffusion coefficient is D A1，B2 , the partition coefficient of component A2 at temperature B1 is K A2，B1 , and the diffusion coefficient is D A2，B1 , the partition coefficient of component A2 at temperature B2 is K A2，B2 , and the diffusion coefficient is D A2，B2 .

[0056] In a specific example, based on the first predicted initial emission concentration (formaldehyde), partition coefficient and diffusion coefficient of the in-vehicle component A1 at the first temperature, simulation is performed to obtain the first alternative formaldehyde concentration of the in-vehicle component A1. Based on the first predicted initial emission concentration (formaldehyde), partition coefficient and diffusion coefficient of the in-vehicle component A2 at the first temperature, simulation is performed to obtain the first alternative formaldehyde concentration of the in-vehicle component A2. Based on the first predicted initial emission concentration (formaldehyde), partition coefficient and diffusion coefficient of the in-vehicle component A3 at the first temperature, simulation is performed to obtain the first alternative formaldehyde concentration of the in-vehicle component A3. The determination method of the alternative concentration of other volatile organic compounds is similar to that of the formaldehyde alternative concentration and will not be elaborated here.

[0057] Optionally, before determining the first predicted initial emission concentration of the in-vehicle components at the first temperature according to the first concentration threshold and the first adjustment parameter, it further includes:

[0058] Determine the first adjustment parameter according to the partition coefficient and reduction ratio of the in-vehicle components at the first temperature, where the reduction ratio is equal to the ratio of the measured initial emission concentration of the in-vehicle components at the first temperature to the measured initial emission concentration at the second temperature.

[0059] In this embodiment, the partition coefficient of the in-vehicle components at the first temperature can be obtained by querying the correspondence table of components, temperature, and partition coefficient. For example, the correspondence table of components, temperature, and partition coefficient may include: the partition coefficient of component A1 at temperature B1 is K A1，B1 , the partition coefficient of component A1 at temperature B2 is K A1，B2 , the partition coefficient of component A2 at temperature B1 is K A2，B1 , the partition coefficient of component A2 at temperature B2 is K A2，B2 .

[0060] In this embodiment, the measured initial emission concentration of the in-vehicle components at the first temperature and the measured initial emission concentration at the second temperature can be obtained by querying the correspondence table of components, temperature, and measured initial emission concentration. For example, the correspondence table of components, temperature, and measured initial emission concentration may include: the measured initial emission concentration of component A1 at temperature B1 is C 0_A1，B1_实测 , the measured initial emission concentration of component A1 at temperature B2 is C 0_A1，B2_实测 , the partition coefficient of component A2 at temperature B1 is C 0_A2，B1_实测 , the measured initial emission concentration of component A2 at temperature B2 is C 0_A2，B2_实测 . In a specific example, by looking up the table, the measured value C of the initial emission concentration of the components at room temperature of 25°C 0_25_实测 , and the measured value C of the initial emission concentration at high temperature of 65°C 0_65_实测 are obtained. These two measured values are obtained by performing VOC emission tests on each component at 25°C and 65°C respectively. The higher the temperature, the greater the VOC emission concentration and the faster the VOC molecule diffusion. Therefore, the VOC concentration at 65°C is higher than that at 25°C. Dividing C 0_25_实测 by C 0_65_实测 can calculate the reduction ratio.

[0061] In this embodiment, the method for determining the first adjustment parameter based on the partition coefficient and the reduction ratio of the in-vehicle components at the first temperature may be: taking the ratio of the partition coefficient and the reduction ratio of the in-vehicle components at the first temperature as the first adjustment parameter.

[0062] The technical solution provided by the embodiment of the present invention can obtain a more accurate first predicted initial emitting concentration of each in-vehicle component at the first temperature based on the first adjustment parameter of each in-vehicle component determined according to the distribution coefficient and reduction ratio of the in-vehicle component at the first temperature, and the first concentration threshold. Then, simulation is performed based on the more accurate first predicted initial emitting concentration of each in-vehicle component at the first temperature to obtain a more accurate first candidate volatile organic compound concentration of the in-vehicle component.

[0063] Optionally, determining the first adjustment parameter according to the distribution coefficient and reduction ratio of the in-vehicle component at the first temperature includes:

[0064] The ratio of the distribution coefficient and the reduction ratio of the in-vehicle component at the first temperature is determined as a first adjustment parameter.

[0065] In this embodiment, the predicted initial emitting concentration of the vehicle interior components at the first temperature is equal to the product of the first concentration threshold and the distribution coefficient of the vehicle interior components at the first temperature. The reason for this calculation is that the normal temperature test condition for VOC in the vehicle is generally 25°C and the emission is continuously carried out for 16 hours. At the end of the test, the VOC in the vehicle is approximately in an emitting equilibrium state, that is, the VOC concentration distribution in all parts of the vehicle interior air is approximately uniform and equal, and the value is VOC 常 , which is the first concentration threshold; the VOC concentration distribution inside each component is also approximately uniform and equal. According to the definition of the distribution coefficient, the predicted initial emitting concentration of the vehicle components at the first temperature is approximately equal to VOC 常 *K 常 . K 常 is the distribution coefficient of the vehicle interior components at the first temperature. It should be noted that the predicted initial emitting concentration of the vehicle interior components at the first temperature calculated here is 1% to 10% lower than the theoretical initial emitting concentration of the components at the first temperature. This is because the emitting concentration in the components will decrease after 16 hours of continuous emission at room temperature. This degree of reduction is difficult to accurately calculate due to the influence of the VOC concentration emitted by other components. In order to simplify the derivation process and shorten the derivation time, this reduction is ignored here, and the VOC concentration limit of the components finally derived will also be smaller (stricter).

[0066] In a specific example, the predicted initial emanation concentration C of a component at room temperature 25°C is calculated. 0_25_预测 =VOC 常 *K 25 For example, C 0_25_预测_甲醛 =VOC 常_甲醛 *K 25_甲醛 =30 μg / m 3 *263=7890 μg / m3 。The first adjustment parameter = K 25 / Reduction ratio, reduction ratio = C 0_25_实测 / C 0_65_实测 。

[0067] In this embodiment, the first predicted initial emission concentration of in-vehicle components at the first temperature is equal to the ratio of the predicted initial emission concentration of in-vehicle components at the first temperature to the reduction ratio.

[0068] In a specific example, the first predicted initial emission concentration C of in-vehicle components at a high temperature of 65 °C 0_65_预测1 = C 0_25_预测 / C 0_25_实测 *C 0_65_实测 。The reason for converting to the initial emission concentration C0 at 65 °C is that the VOC performance verification test for components is carried out at 65 °C. For example, C 0_65_预测1_甲醛 = C 0_25_预测_甲醛 / C 0_25_实测_甲醛 *C 0_65_实测_甲醛 = 7890 μg / m 3 / 7000 μg / m 3 *29300 μg / m 3 ≈ 33025 μg / m 3 。

[0069] The technical solution provided by the embodiment of the present invention, according to the ratio of the partition coefficient and the reduction ratio of the in-vehicle components at the first temperature, and the first concentration threshold, can obtain a more accurate first predicted initial emission concentration of each in-vehicle component at the first temperature, and then based on the more accurate first predicted initial emission concentration of each in-vehicle component at the first temperature, perform simulation to obtain a more accurate first alternative volatile organic compound concentration of the in-vehicle components.

[0070] Optionally, based on the first predicted initial emission concentration, partition coefficient and diffusion coefficient of the in-vehicle components at the first temperature, perform simulation to obtain the first alternative volatile organic compound concentration of the in-vehicle components, including:

[0071] Input the first predicted initial emission concentration, partition coefficient and diffusion coefficient of the in-vehicle components at the first temperature into the in-vehicle component simulation emission model, and perform simulation on the volatile organic compound emission process of the components in a preset limited space to obtain the first alternative volatile organic compound concentration of the in-vehicle components corresponding to the second preset time, where the second preset time is less than the first preset time.

[0072] In this embodiment, the second preset time may be 2 hours. The first preset time may be 4 hours. The embodiments of the present invention do not limit this.

[0073] In this embodiment, since there are various in-vehicle components, the in-vehicle component simulation emission model also includes the simulation emission models corresponding to the respective components. This embodiment conducts the simulation of the emission process of in-vehicle components in a preset finite space based on the computational fluid dynamics principle. The simulation models are all three-dimensional finite element numerical simulation models, and the simulation is three-dimensional finite element numerical simulation, which is implemented based on a three-dimensional finite element numerical simulation software.

[0074] It should be noted that in addition to inputting the first predicted initial emission concentration, partition coefficient, and diffusion coefficient of the in-vehicle components at the first temperature into the in-vehicle component simulation emission model, data such as the emission thickness, emission area, emission time, and emission space of the components also need to be input into the in-vehicle component simulation emission model. If the data such as the emission thickness, emission area, emission time, and emission space of the components are not input, they will be set to default values. The embodiments of the present invention do not limit this.

[0075] In this embodiment, the constraint conditions of the in-vehicle component simulation emission model include: the first predicted initial emission concentration constraint of the in-vehicle components at the first temperature and the control equation constraint. In this embodiment, Fick's second law of diffusion is used as one control equation, and Henry's law is used as the other control equation. This is because, according to the computational fluid dynamics theory, the gas diffusion at any position follows Fick's second law of diffusion; and the concentration of the gas in different media also needs to follow Henry's law. It should be noted that Fick's second law of diffusion and Henry's law include the diffusion coefficient and partition coefficient of the medium. Substituting the diffusion coefficient and partition coefficient of each component into Fick's second law of diffusion and Henry's law, the control equations can be obtained. After the two constraint conditions are constructed, the simulation software automatically calculates the concentration of volatile organic compounds at each diffusion moment according to these constraint conditions. Furthermore, the first alternative volatile organic compound concentration of the in-vehicle components is obtained.

[0076] In this embodiment, the first predicted initial emission concentration, partition coefficient, and diffusion coefficient of the in-vehicle components at the first temperature are input into the in-vehicle component simulation emission model to conduct the simulation of the volatile organic compound emission process of the components in a preset finite space, and a volatile organic compound concentration curve is obtained (the volatile organic compound concentration curve includes the volatile organic compound concentrations corresponding to different times, the abscissa is time, and the ordinate is the volatile organic compound concentration). The volatile organic compound concentration corresponding to the second preset time in the volatile organic compound concentration curve is determined as the first alternative volatile organic compound concentration.

[0077] The technical solution provided by the embodiment of the present invention can improve the accuracy of the obtained first alternative volatile organic compound concentration by inputting the first predicted initial emission concentration, partition coefficient, and diffusion coefficient of the in-vehicle component at the first temperature into the in-vehicle component simulation emission model, and performing simulation on the volatile organic compound emission process of the component in a preset limited space to obtain the first alternative volatile organic compound concentration of the in-vehicle component corresponding to the second preset time.

[0078] S103. Perform simulation based on the second predicted initial emission concentration, partition coefficient, and diffusion coefficient of the in-vehicle component at the second temperature to obtain the second alternative volatile organic compound concentration of the in-vehicle component.

[0079] In this embodiment, the second predicted initial emission concentration of the in-vehicle component at the second temperature is determined according to the second concentration threshold and the second adjustment parameter.

[0080] In this embodiment, the second adjustment parameter can be determined according to the partition coefficient and the measured initial emission concentration of the in-vehicle component at the third temperature and the measured initial emission concentration of the in-vehicle component at the second temperature. It should be noted that the third temperature can be the temperature of the in-vehicle component collected after heating the vehicle in a sunlight simulation environmental chamber at the first irradiation intensity for the first preset time.

[0081] In this embodiment, the method of performing simulation based on the second predicted initial emission concentration, partition coefficient, and diffusion coefficient of the in-vehicle component at the second temperature to obtain the second alternative volatile organic compound concentration of the in-vehicle component can be: inputting the second predicted initial emission concentration, partition coefficient, and diffusion coefficient of the in-vehicle component at the second temperature into the in-vehicle component simulation emission model, and performing simulation on the volatile organic compound emission process of the component in a preset limited space to obtain the second alternative volatile organic compound concentration of the in-vehicle component corresponding to the second preset time, where the second preset time is less than the first preset time.

[0082] Optionally, before determining the second predicted initial emission concentration of the in-vehicle component at the second temperature according to the second concentration threshold and the second adjustment parameter, it further includes:

[0083] Determine the second adjustment parameter according to the partition coefficient and the measured initial emission concentration of the in-vehicle component at the third temperature and the measured initial emission concentration of the in-vehicle component at the second temperature.

[0084] In this embodiment, the third temperature can be greater than the first temperature and less than the second temperature, or can be greater than the second temperature.

[0085] Optionally, the third temperature is the temperature of the in-vehicle components collected after heating the vehicle in a sunlight simulation environmental chamber at a first irradiation intensity for a first preset time.

[0086] In a specific example, the third temperature is the self-temperature of the in-vehicle components collected by a temperature sensor after heating the vehicle in a sunlight simulation environmental chamber at an irradiation intensity of 400 W / m2 or 900 W / m2 for 4 h.

[0087] It should be noted that the third temperature can also be the self-temperature of the in-vehicle components collected by a temperature sensor after the vehicle is placed in actual sites such as by the roadside, in the desert, or by the sea.

[0088] In this embodiment, the partition coefficient of the in-vehicle components at the third temperature can be obtained by querying the corresponding relationship table of components, temperature, and partition coefficient. For example, the corresponding relationship table of components, temperature, and partition coefficient may include: the partition coefficient of component A1 at temperature B1 is K A1，B1 , the partition coefficient of component A1 at temperature B2 is K A1，B2 , the partition coefficient of component A2 at temperature B1 is K A2，B1 , the partition coefficient of component A2 at temperature B2 is K A2，B2 .

[0089] In this embodiment, the measured initial emission concentration of the in-vehicle components at the third temperature can be obtained by querying the corresponding relationship table of components, temperature, and measured initial emission concentration. For example, the corresponding relationship table of components, temperature, and measured initial emission concentration may include: the measured initial emission concentration of component A1 at temperature B1 is C 0_A1，B1_实测 , the measured initial emission concentration of component A1 at temperature B2 is C 0_A1，B2_实测 , the partition coefficient of component A2 at temperature B1 is C 0_A2，B1_实测 , the measured initial emission concentration of component A2 at temperature B2 is C 0_A2，B2_实测 .

[0090] In this embodiment, the determination method of the measured initial emission concentration of the in-vehicle components at the second temperature is similar to the determination method of the measured initial emission concentration of the in-vehicle components at the third temperature, and will not be elaborated here.

[0091] In this embodiment, the method for determining the second adjustment parameter based on the partition coefficient and the measured initial emission concentration of the vehicle interior components at the third temperature and the measured initial emission concentration of the vehicle interior components at the second temperature may be as follows: Simulate based on the measured initial emission concentration, partition coefficient, and diffusion coefficient of the vehicle interior components at the third temperature to obtain the simulated surface concentration of the vehicle interior components at the third temperature; Determine the second adjustment parameter based on the partition coefficient and the simulated surface concentration of the vehicle interior components at the third temperature and the measured initial emission concentration of the vehicle interior components at the second temperature.

[0092] According to the technical solution provided by the embodiment of the present invention, based on the second adjustment parameter determined according to the partition coefficient and the measured initial emission concentration of the vehicle interior components at the third temperature and the measured initial emission concentration of the vehicle interior components at the second temperature, and the second concentration threshold, the second predicted initial emission concentration of each vehicle interior component at the second temperature can be obtained more accurately. Furthermore, simulate based on the more accurate second predicted initial emission concentration of each vehicle interior component at the second temperature to obtain a more accurate second alternative volatile organic compound concentration of the vehicle interior components.

[0093] Optionally, determining the second adjustment parameter based on the partition coefficient and the measured initial emission concentration of the vehicle interior components at the third temperature and the measured initial emission concentration of the vehicle interior components at the second temperature includes:

[0094] Simulate based on the measured initial emission concentration, partition coefficient, and diffusion coefficient of the vehicle interior components at the third temperature to obtain the simulated surface concentration of the vehicle interior components at the third temperature.

[0095] In this embodiment, the method for simulating based on the measured initial emission concentration, partition coefficient, and diffusion coefficient of the vehicle interior components at the third temperature to obtain the simulated surface concentration of the vehicle interior components at the third temperature may be as follows: Input the measured initial emission concentration, partition coefficient, and diffusion coefficient of the vehicle interior components at the third temperature into the vehicle interior component simulation emission model, and perform simulation on the volatile organic compound emission process of the components in a preset limited space to obtain the simulated surface concentration of the vehicle interior components at the third temperature corresponding to the first preset time.

[0096] In this embodiment, the first preset time may be 4 hours. The embodiment of the present invention does not limit this.

[0097] It should be noted that, in addition to inputting the measured initial emission concentration, partition coefficient, and diffusion coefficient of the in-vehicle components at the third temperature into the in-vehicle component simulation emission model, data such as the emission thickness, emission area, emission time, and emission space of the components also need to be input into the in-vehicle component simulation emission model. If the data such as the emission thickness, emission area, emission time, and emission space of the components are not input, they will be set to default values. The embodiments of the present invention do not limit this.

[0098] In this embodiment, the constraint conditions of the in-vehicle component simulation emission model include: the measured initial emission concentration constraint and the control equation constraint of the in-vehicle components at the third temperature. In this embodiment, Fick's second law of diffusion is used as one control equation, and Henry's law is used as another control equation. This is because, according to the computational fluid dynamics theory, the gas diffusion at any position follows Fick's second law of diffusion; and the concentration of the gas in different media also needs to follow Henry's law. It should be noted that Fick's second law of diffusion and Henry's law include the diffusion coefficient and partition coefficient of the medium. Substituting the diffusion coefficient and partition coefficient of each component into Fick's second law of diffusion and Henry's law, the control equation can be obtained. After the two constraint conditions are constructed, the simulation software automatically calculates the concentration of volatile organic compounds at each diffusion moment according to these constraint conditions. Furthermore, the simulated surface concentration of the in-vehicle components at the third temperature is obtained.

[0099] In this embodiment, the measured initial emission concentration, partition coefficient, and diffusion coefficient of the in-vehicle components at the third temperature are input into the in-vehicle component simulation emission model to simulate the volatile organic compound emission process of the components in a preset finite space, and a volatile organic compound concentration curve is obtained (the volatile organic compound concentration curve includes the volatile organic compound concentration corresponding to different times, the abscissa is time, and the ordinate is the volatile organic compound concentration). The volatile organic compound concentration corresponding to the first preset time in the volatile organic compound concentration curve is determined as the simulated surface concentration of the in-vehicle components at the third temperature.

[0100] The technical solution provided by the embodiments of the present invention can improve the accuracy of the simulated surface concentration of the in-vehicle components at the third temperature by inputting the measured initial emission concentration, partition coefficient, and diffusion coefficient of the in-vehicle components at the third temperature into the in-vehicle component simulation emission model, simulating the volatile organic compound emission process of the components in a preset finite space, and obtaining the simulated surface concentration of the in-vehicle components at the third temperature corresponding to the first preset time.

[0101] According to the partition coefficient and simulated surface concentration of the in-vehicle components at the third temperature, and the measured initial emission concentration of the in-vehicle components at the second temperature, a second adjustment parameter is determined.

[0102] In this embodiment, the method for determining the second adjustment parameter based on the partition coefficient and the simulated surface concentration of the in-vehicle component at the third temperature and the measured initial emission concentration of the in-vehicle component at the second temperature may be as follows: determining a third adjustment parameter according to the ratio of the partition coefficient and the simulated surface concentration of the in-vehicle component at the third temperature; and determining the second adjustment parameter according to the product of the third adjustment parameter and the measured initial emission concentration of the in-vehicle component at the second temperature.

[0103] The technical solution provided by the embodiment of the present invention pre-simulates based on the measured initial emission concentration, partition coefficient and diffusion coefficient of the in-vehicle component at the third temperature to obtain the simulated surface concentration of the in-vehicle component at the third temperature; and then determines the second adjustment parameter according to the partition coefficient and the simulated surface concentration of the in-vehicle component at the third temperature and the measured initial emission concentration of the in-vehicle component at the second temperature. It can more accurately determine the second adjustment parameter.

[0104] Optionally, determining the second adjustment parameter according to the partition coefficient and the simulated surface concentration of the in-vehicle component at the third temperature and the measured initial emission concentration of the in-vehicle component at the second temperature includes:

[0105] Determining a third adjustment parameter according to the ratio of the partition coefficient and the simulated surface concentration of the in-vehicle component at the third temperature.

[0106] In this embodiment, the predicted surface concentration of the in-vehicle component at the third temperature is equal to the product of the second concentration threshold and the partition coefficient of the in-vehicle component at the third temperature. The calculation logic here is similar to the calculation logic of the predicted initial emission concentration of the in-vehicle component at the first temperature. The difference is that at the relatively high third temperature and the relatively short emission time, the non-uniformity of the VOC concentration distribution in the component is relatively large. Therefore, the surface concentration needs to be deduced first, and then the initial emission concentration is deduced. The "surface" can be defined as any thickness at 5%, 10% and 15% of the emission thickness direction of the component. For example, the predicted surface concentration VOC of formaldehyde in the front row seat after 4h of emission at 45°C 45_表层_推导_甲醛 = VOC 高_甲醛 *K 45_甲醛 = 100 μg / m 3 * 191 = 19100 μg / m 3 .

[0107] In this embodiment, the diffusion coefficient of the component at the third temperature and the measured initial emission concentration of the in-vehicle component at the third temperature can be obtained by looking up a table. The measured initial emission concentration, partition coefficient, and diffusion coefficient of the in-vehicle component at the third temperature are input into the in-vehicle component simulation emission model to simulate the volatile organic compound emission process of the component in a preset finite space, and the simulated surface concentration of the in-vehicle component at the third temperature corresponding to the first preset time is obtained.

[0108] Determine a second adjustment parameter according to the product of the third adjustment parameter and the measured initial emission concentration of the in-vehicle component at the second temperature.

[0109] In this embodiment, the product of the ratio of the predicted surface concentration of the in-vehicle component at the third temperature to the simulated surface concentration of the in-vehicle component at the third temperature and the measured initial emission concentration of the in-vehicle component at the third temperature is determined as the predicted initial emission concentration of the in-vehicle component at the third temperature.

[0110] In this embodiment, the predicted initial emission concentration C of the in-vehicle component at the third temperature 0_T_预测 = VOC T_表层_预测 / VOC T_4h_表层_仿真 * C 0_T_实测 . T is the third temperature, VOC T_表层_预测 is the predicted surface concentration of the in-vehicle component at the third temperature. VOC T_4h_表层_仿真 is the simulated surface concentration of the in-vehicle component at the third temperature, and C 0_T_实测 is the measured initial emission concentration of the in-vehicle component at the third temperature. The logic of the calculation here is that the ratio between the predicted value and the measured value of the initial emission concentration at the third temperature is equal to the ratio between the predicted value and the simulated value of the surface concentration.

[0111] In this embodiment, the product of the ratio of the predicted initial emission concentration of the in-vehicle component at the third temperature to the measured initial emission concentration of the in-vehicle component at the third temperature and the measured initial emission concentration of the in-vehicle component at the second temperature is determined as the second predicted initial emission concentration of the in-vehicle component at the second temperature. It should be noted that the reason for converting to the initial emission concentration at the second temperature is that the VOC performance verification test of the component is performed at the second temperature.

[0112] In the technical solution provided by the embodiment of the present invention, a third adjustment parameter is determined in advance according to the ratio of the partition coefficient and the simulated surface concentration of the vehicle interior component at the third temperature; then, a second adjustment parameter is determined according to the product of the third adjustment parameter and the measured initial emission concentration of the vehicle interior component at the second temperature. Since the ratio between the predicted value and the measured value of the initial emission concentration at the third temperature is equal to the ratio between the predicted value and the simulated value of the surface concentration, the second adjustment parameter can be determined more accurately in the above manner.

[0113] S104. Determine the minimum value of the first alternative volatile organic compound concentration and the second alternative volatile organic compound concentration as the reference concentration of volatile organic compounds of the vehicle interior component.

[0114] In this embodiment, the reference concentration of volatile organic compounds of the vehicle interior component can be the reference concentration of volatile organic compounds of the seat, or the reference concentration of volatile organic compounds of the instrument panel, or the reference concentration of volatile organic compounds of the carpet, or the reference concentration of volatile organic compounds of the ceiling, or the reference concentration of volatile organic compounds of the sealing strip. It should be noted that the driver's seat, the passenger seat and the rear seats belong to different vehicle interior components.

[0115] In a specific example, the reference concentration of volatile organic compounds of the instrument panel includes: the reference concentration of benzene, toluene, ethylbenzene, xylene, styrene, formaldehyde, acetaldehyde, acrolein, etc. of the instrument panel. The embodiment of the present invention does not limit this.

[0116] In this embodiment, the reference concentration of volatile organic compounds of the vehicle interior component is the limit value of the concentration of volatile organic compounds of the vehicle interior component, and can also be called the VOC index of the vehicle interior component. When the measured value of the VOC concentration of the vehicle interior component A1 is higher than the VOC index of the vehicle interior component A1, the vehicle interior component A1 fails to meet the standard.

[0117] The technical solution of this embodiment is to obtain the first concentration threshold and the second concentration threshold of volatile organic compounds (VOCs) in the vehicle interior, where the second temperature corresponding to the second concentration threshold is higher than the first temperature corresponding to the first concentration threshold; perform simulations based on the first predicted initial emission concentration, partition coefficient, and diffusion coefficient of vehicle interior components at the first temperature to obtain the first alternative VOC concentration of the vehicle interior components; perform simulations based on the second predicted initial emission concentration, partition coefficient, and diffusion coefficient of the vehicle interior components at the second temperature to obtain the second alternative VOC concentration of the vehicle interior components; and determine the minimum value of the first alternative VOC concentration and the second alternative VOC concentration as the reference VOC concentration of the vehicle interior components, which can solve the problems of poor rationality and long time consumption in determining the reference parameters of vehicle interior components in the prior art, and can improve the determination efficiency and accuracy of the reference parameters of vehicle interior components.

[0118] Embodiment 2

[0119] Figure 2 It is a flowchart of the second method for determining the reference parameters of vehicle interior components in the embodiments of the present invention. This embodiment is optimized based on the above embodiment. As Figure 2 shown, the method specifically includes the following steps:

[0120] S201. Obtain the first concentration threshold of volatile organic compounds in the vehicle interior.

[0121] In this embodiment, the vehicle interior VOC concentration limit is obtained by looking up a table. The vehicle interior VOC concentration limit includes: the first concentration threshold (normal temperature limit VOC 常 ). The first concentration limit is artificially set, and the setting basis is to be lower than the limits of various evaluation standards, or lower than the limits of competing models, or lower than the relevant limits of the previous version, so as to maintain a technological competitive advantage for vehicle interior VOCs. For example, it can be that the normal temperature limit VOC 常_甲醛 of formaldehyde in the vehicle interior = 30 μg / m 3 .

[0122] S202. Obtain the partition coefficient of vehicle interior components at the first temperature.

[0123] In this embodiment, the partition coefficient of vehicle interior components at the first temperature can be obtained by looking up a table. For example, it can be that the partition coefficient K 25 of vehicle interior components at normal temperature of 25 °C is obtained by looking up a table. For example, the partition coefficient K [[ID=3]] 25_甲醛 of formaldehyde in the front row seats is obtained by looking up a table = 263.

[0124] S203. Calculate the predicted initial emission concentration of vehicle interior components at the first temperature according to the first concentration threshold and the partition coefficient of vehicle interior components at the first temperature.

[0125] In this embodiment, the product of the first concentration threshold and the distribution coefficient of the in-vehicle component at the first temperature is determined as the predicted initial emitting concentration of the in-vehicle component at the first temperature.

[0126] In a specific example, the first temperature is 25°C. The predicted initial radiable concentration C of the component at 25°C is calculated. 0_25_预测 =VOC 常 *K 25 The reason for this calculation is that the VOC test condition in the car is generally to continue to emit at 25℃ for 16 hours. At the end of the test, the VOC in the car is close to reaching the equilibrium state, that is, the VOC concentration distribution in the air in the car is approximately uniform and equal, and its value is VOC 常 The VOC concentration distribution inside each component is also approximately uniform and equal. According to the definition of the distribution coefficient, its value C 0_25_预测 Approximately equal to VOC 常 *K 25 It should be noted that the C calculated here is 0_25_预测 Compared with the theoretical component C 0_25 The limit is 1% to 10% smaller because the emitting concentration in components decreases after 16 hours of continuous emission at 25°C. This degree of reduction is difficult to accurately calculate due to the influence of VOC concentrations emitted by other components. To simplify the derivation process and shorten the time required, this reduction is ignored here. As a result, the final derived component VOC concentration limit will be lower (stricter).

[0127] For example, C 0_25_预测_甲醛 =VOC 常_甲醛 *K 25_甲醛 =30 μg / m 3 *263=7890 μg / m 3 .

[0128] S204 : Obtain the measured initial radiable concentration of the vehicle interior components at the first temperature and the measured initial radiable concentration at the second temperature.

[0129] In this embodiment, the measured initial radiable concentration of the component at the first temperature and the measured initial radiable concentration at the second temperature are obtained by looking up the table.

[0130] In a specific example, the first temperature is 25°C and the second temperature is 65°C. The measured initial radiable concentration C of the component at room temperature of 25°C is obtained by looking up the table. 0_25_实测, and the measured initial emission concentration at a high temperature of 65°C. These two measured values are obtained by performing VOC emission tests on each component at 25°C and 65°C respectively. The higher the temperature, the greater the VOC emission concentration and the faster the VOC molecule diffusion. Therefore, the VOC concentration at 65°C is higher than that at 25°C. Divide C 0_25_实测 by C 0_65_实测 to calculate the reduction ratio.

[0131] S205. Determine the ratio of the predicted initial emission concentration of the in-vehicle components at the first temperature to the reduction ratio as the first predicted initial emission concentration of the in-vehicle components at the first temperature.

[0132] In this embodiment, it is illustrated with the first temperature being 25°C and the second temperature being 65°C. Calculate the first predicted initial emission concentration C 0_65_预测1 = C 0_25_预测 / C 0_25_实测 * C 0_65_实测 . The reason for converting to the initial emission concentration C0 at 65°C is that the VOC performance verification test for the components is performed at 65°C. For example, C 0_65_预测1_甲醛 = C 0_25_预测_甲醛 / C 0_25_实测_甲醛 * C 0_65_实测_甲醛 = 7890 μg / m 3 / 7000 μg / m 3 * 29300 μg / m 3 ≈ 33025 μg / m 3 .

[0133] S206. Perform simulation based on the first predicted initial emission concentration, partition coefficient, and diffusion coefficient of the in-vehicle components at the first temperature to obtain the first alternative volatile organic compound concentration.

[0134] In this embodiment, it is illustrated with the first temperature being 25°C and the second temperature being 65°C. Look up the partition coefficient K 65 and diffusion coefficient D 65 of the components at the high temperature of 65°C. For example, K 65_甲醛 = 145, D 65_甲醛 = 9.2e-9 m 2 / s. Substitute C 0_65_预测1 , K 65 , D 65 into the component simulation emission model to calculate the first alternative volatile organic compound concentration VOC 65_2h_1 . Substitute C 0_65_预测1 , K 65 , D 65Enter data such as the emission thickness, emission area, emission time, and emission space of the components into the component simulation emission model. After about ten seconds of software calculation, the first alternative volatile organic compound concentration VOC of the components under the input parameter limitations can be predicted. 65_2h_1 This concentration value is gradually derived based on the in-vehicle VOC concentration limit at room temperature of 25°C. If the in-vehicle VOC concentration limit VOC 常 increases, VOC 65_2h_1 also increases; if VOC 常 decreases, VOC 65_2h_1 also decreases, and the change ratio of VOC 65_2h_1 is equal to the change ratio of VOC 常 . Calculate the VOC concentration after 2 hours of simulation emission at 65°C here and use it as the VOC concentration limit of the components because the emission for 2 hours at 65°C is the test condition for the VOC performance inspection of the components in actual production. For example, through the simulation emission model calculation, the first alternative volatile organic compound concentration VOC 65_2h_1 of the components = 90 μg / m 3 . If the measured VOC concentration value VOC 65_2h_实测 after 2 hours of its emission at 65°C = 130 μg / m 3 , that is, VOC 65_2h_实测 > VOC 65_2h_1 , then the application of this component on the vehicle will cause the in-vehicle VOC concentration to exceed VOC 常 , that is, the in-vehicle VOC concentration does not meet the standard.

[0135] S207. Obtain the second concentration threshold of the volatile organic compounds in the vehicle interior.

[0136] In this embodiment, look up the in-vehicle VOC concentration limit in a table. The in-vehicle VOC concentration limit also includes: the second concentration threshold (high-temperature limit VOC 高 ). The second concentration threshold is set artificially, and the setting basis is lower than the limits of various evaluation standards, or lower than the limits of competing models, or lower than the relevant limits of the previous version, so as to maintain a technological competitive advantage for the in-vehicle VOC. For example, it can be that the high-temperature limit VOC 高_甲醛 of formaldehyde in the vehicle interior = 100 μg / m 3 .

[0137] S208. Obtain the self-temperature (the third temperature) of the components in the vehicle interior under the high temperature of the whole vehicle.

[0138] In this embodiment, look up the self-temperature T (the third temperature) of the components under the high temperature of the whole vehicle in a table. The self-temperature T of the components will affect the values of the partition coefficient and the diffusion coefficient. The conditions causing the high temperature of the whole vehicle may be caused by direct sunlight when the vehicle is placed outdoors, or the vehicle is placed in a sunlight simulation environmental chamber at 400 W / m2 or 900 W / m 2 caused by heating for 4 h under the same irradiation intensity. Since the positions of the components in the vehicle are different, the areas and angles of receiving light are different, and their thermal conductivities and reflectivities are also different. Therefore, even in the same vehicle, the self - temperatures T of the components are different and can be measured by temperature sensors. For example, the self - temperature of the front row seat after 4 h of light irradiation at 400 W / m 2 in the whole vehicle is about 45°C.

[0139] S209. Calculate the predicted surface concentration of the in - vehicle components at the third temperature according to the distribution coefficient and the second concentration threshold of the in - vehicle components at the third temperature.

[0140] In this embodiment, look up the distribution coefficient K of the component at the third temperature T in the table. T . For example, the K of formaldehyde in the front row seat at 45°C 45_甲醛 = 191. Multiply the distribution coefficient of the in - vehicle component at the third temperature by the second concentration threshold to determine the predicted surface concentration of the in - vehicle component at the third temperature. For example, the predicted surface concentration VOC T_表层_预测 of the component at the third temperature T 高 = VOC T *K 45_表层_预测_甲醛 . Here, the calculation logic is similar to S203. The difference is that at the higher third temperature T and the shorter emission time, the non - uniformity of the VOC concentration distribution in the component is larger. Therefore, the surface concentration needs to be derived first, and then the initial emission concentration. The "surface layer" can be defined as at least one of the thicknesses of 5%, 10%, and 15% in the emission thickness direction of the component. For example, the predicted surface concentration VOC 高_甲醛 of formaldehyde in the front row seat after 4 h of emission at 45°C 45_甲醛 = VOC 3 *K 3 = 100 μg / m

[0141] S210. Based on the measured initial emission concentration, distribution coefficient, and diffusion coefficient of the in - vehicle components at the third temperature, perform a simulation to obtain the simulated surface concentration of the components at the third temperature.

[0142] In this embodiment, look up the distribution coefficient and diffusion coefficient of the in - vehicle components at the third temperature in the table. Input the measured initial emission concentration, distribution coefficient, and diffusion coefficient of the in - vehicle components at the third temperature into the in - vehicle component simulation emission model, and perform a simulation on the volatile organic compound emission process of the components in the preset limited space to obtain the simulated surface concentration of the components at the third temperature corresponding to the first preset time.

[0143] In this embodiment, the diffusion coefficient D of the component at the third temperature T is obtained by looking up a table T and the measured value C of the initial emission concentration 0_T_实测 . For example, it can be that D of formaldehyde in the front row seat at 45 °C 45_甲醛 = 7.6e-9 m 2 / s, C 0_45_实测_甲醛 = 18000 μg / m 3 .

[0144] In this embodiment, C 0_T_实测 , K T , and D T are substituted into the in-vehicle component simulation emission model, and the simulated surface concentration VOC of the component at the third temperature T is calculated T_4h_表层_仿真 . The in-vehicle component simulation emission model described here is the same as the one used in S206. The difference is that the input values of C0, K, and D are different, and the emission time is changed from 2 h to 4 h. For example, it can be that the VOC of the component is calculated through the in-vehicle component simulation emission model 45_4h_表层_仿真_甲醛 = 17000 μg / m 3 .

[0145] S211. Determine the predicted initial emission concentration of the component at the third temperature by multiplying the ratio of the predicted surface concentration of the component at the third temperature to the simulated surface concentration of the component at the third temperature by the measured initial emission concentration of the component at the third temperature

[0146] In this embodiment, the predicted initial emission concentration C of the component at the third temperature T is calculated 0_T_预测 = VOC T_表层_预测 / VOC T_4h_表层_仿真 * C 0_T_实测 . The logic of the calculation here is that the ratio between the predicted value and the measured value of the initial emission concentration C0 at the third temperature T is equal to the ratio between the predicted value and the simulated value of the surface concentration. For example, it can be that the predicted initial emission concentration C of formaldehyde in the front row seat at 4 °C 0_45_预测_甲醛 = VOC 45_表层_预测_甲醛 / VOC 45_4h_表层_仿真_甲醛 * C 0_45_实测_甲醛 = 19100 μg / m 3 / 17000 μg / m 3 * 18000 μg / m 3 ≈ 20224 μg / m 3 .

[0147] S212. Determine the second predicted initial emission concentration of the component at the second temperature by multiplying the ratio of the predicted initial emission concentration of the component at the third temperature to the measured initial emission concentration of the component at the third temperature by the measured initial emission concentration of the component at the second temperature.

[0148] In this embodiment, taking the second temperature as 65 °C as an example for illustration. Look up the measured initial emission concentration C of the component at the third temperature T 0_T_实测 , and the measured initial emission concentration C at the high temperature of 65 °C 0_65_实测 . The usage logic of these two measured values is the same as that described in S204.

[0149] In this embodiment, taking the second temperature as 65 °C as an example for illustration. Calculate the predicted initial emission concentration C of the component at the high temperature of 65 °C 0_65_预测2 = C 0_T_预测 / C 0_T_实测 * C 0_65_实测 . The reason for converting to the initial emission concentration C0 at 65 °C is that the VOC performance verification test of the component is carried out at 65 °C. For example, it can be illustrated with the third temperature being 45 °C, the second temperature being 65 °C, and the volatile organic compound being formaldehyde. C 0_65_预测2_甲醛 = C 0_45_预测_甲醛 / C 0_45_实测_甲醛 * C 0_65_实测_甲醛 = 20224 μg / m 3 / 19500 μg / m 3 * 37600 μg / m 3 ≈ 39000 μg / m 3 .

[0150] S213. Based on the second predicted initial emission concentration, partition coefficient, and diffusion coefficient of the component at the second temperature, perform a simulation to obtain the second alternative volatile organic compound concentration of the component.

[0151] In this embodiment, taking the second temperature as 65 °C as an example for illustration. Look up the partition coefficient K of the component at the high temperature of 65 °C 65 and the diffusion coefficient D 65 .

[0152] In this embodiment, taking the second temperature as 65 °C as an example for illustration. Substitute C 0_65_预测2 , K 65 , D 65 into the in-vehicle component simulation emission model, and calculate the second alternative volatile organic compound concentration VOC of the in-vehicle component 65_2h_2 . This step has the same logic as S206, and the difference is that it is from the in-vehicle VOC concentration limit VOC at high temperature 高Derive the VOC concentration limit value of the parts. For example, it can be the second alternative volatile organic compound concentration VOC of the in-vehicle parts calculated through the simulation emission model 65_2h_2 = 106 μg / m 3 .

[0153] In the embodiments of the present invention, when the basic data such as the initial emission concentration C0, partition coefficient K, and diffusion coefficient D of the parts can be found in tabular materials such as chemical engineering manuals and enterprise technical documents, by using the method for determining the reference parameters of in-vehicle parts disclosed in the embodiments of the present invention, the calculation of the reference parameters of in-vehicle parts can be completed in a short time, which is significantly better than the time-consuming of several hours to several months in the prior art solutions, and improves the timeliness of determining the reference parameters of in-vehicle parts.

[0154] S214. Determine the minimum value of the first alternative volatile organic compound concentration and the second alternative volatile organic compound concentration as the reference concentration of volatile organic compounds of the in-vehicle parts.

[0155] In this embodiment, the second temperature is taken as 65 °C as an example for illustration. Set the smaller value of VOC 65_2h_1 and VOC 65_2h_2 as the reference concentration of volatile organic compounds of the in-vehicle parts. For example, if the VOC 65_2h_1_甲醛 = 90 μg / m 3 、VOC 65_2h_2_甲醛 = 106 μg / m 3 , then the reference concentration of volatile organic compounds of formaldehyde in the front row seat should be set to 90 μg / m 3 . As long as the measured value of the formaldehyde concentration of each in-vehicle part is not higher than the reference concentration of formaldehyde, it can ensure that the concentration of formaldehyde in the vehicle is not higher than 30 μg / m 3 at normal temperature and not higher than 100 μg / m 3 at high temperature.

[0156] The technical solution of this embodiment obtains the first concentration threshold and the second concentration threshold of volatile organic compounds in the vehicle interior, where the second temperature corresponding to the second concentration threshold is higher than the first temperature corresponding to the first concentration threshold. Based on the first predicted initial emission concentration, partition coefficient, and diffusion coefficient of vehicle interior components at the first temperature, a simulation is performed to obtain the first alternative volatile organic compound concentration of the vehicle interior components. Based on the second predicted initial emission concentration, partition coefficient, and diffusion coefficient of vehicle interior components at the second temperature, a simulation is performed to obtain the second alternative volatile organic compound concentration of the vehicle interior components. The minimum value of the first alternative volatile organic compound concentration and the second alternative volatile organic compound concentration is determined as the reference concentration of volatile organic compounds of the vehicle interior components, saving the actual test and measurement links and eliminating the need for repeated multi-round iterative simulations. Therefore, the timeliness of determining the reference parameters of vehicle interior components is improved. In addition, in the embodiments of the present invention, each calculation formula or step is based on the physical laws of VOC emission and appropriate simplified assumptions. Therefore, the reference concentrations of volatile organic compounds of each component obtained have interpretability (uniqueness of calculation results), and the systematic errors introduced by the simplified assumptions are estimable (concentration deviation within about 10%), thereby improving the accuracy of determining the reference parameters of vehicle interior components.

[0157] Embodiment III

[0158] Figure 3 FIG. is a schematic structural diagram of a device for determining reference parameters of vehicle interior components provided by an embodiment of the present invention. This embodiment is applicable to the situation of determining reference parameters of vehicle interior components. The device can be implemented in software and / or hardware, and can be integrated in any device that provides the function of determining reference parameters of vehicle interior components, such as Figure 3 As shown, the device for determining reference parameters of vehicle interior components specifically includes: a concentration threshold acquisition module 301, a first alternative volatile organic compound concentration determination module 302, a second alternative volatile organic compound concentration determination module 303, and a reference concentration determination module 304 of volatile organic compounds of vehicle interior components.

[0159] Among them, the concentration threshold acquisition module is used to acquire the first concentration threshold and the second concentration threshold of volatile organic compounds in the vehicle interior, where the second temperature corresponding to the second concentration threshold is higher than the first temperature corresponding to the first concentration threshold.

[0160] The first alternative volatile organic compound concentration determination module is used to perform a simulation based on the first predicted initial emission concentration, partition coefficient, and diffusion coefficient of vehicle interior components at the first temperature to obtain the first alternative volatile organic compound concentration of the vehicle interior components, where the first predicted initial emission concentration of the vehicle interior components at the first temperature is determined according to the first concentration threshold and the first adjustment parameter.

[0161] The second alternative volatile organic compound concentration determination module is configured to perform simulation based on the second predicted initial emission concentration, partition coefficient, and diffusion coefficient of the vehicle interior components at the second temperature, so as to obtain the second alternative volatile organic compound concentration of the vehicle interior components, where the second predicted initial emission concentration of the vehicle interior components at the second temperature is determined according to the second concentration threshold and the second adjustment parameter;

[0162] The volatile organic compound reference concentration determination module of the vehicle interior components is configured to determine the minimum value of the first alternative volatile organic compound concentration and the second alternative volatile organic compound concentration as the volatile organic compound reference concentration of the vehicle interior components.

[0163] The above product can execute the method for determining reference parameters of vehicle interior components provided in any embodiment of the present invention, and has functional modules and beneficial effects corresponding to the execution of the method.

[0164] Embodiment 4

[0165] Figure 4 FIG. shows a schematic structural diagram of an electronic device 60 that can be used to implement an embodiment of the present invention. The electronic device is intended to represent various forms of digital computers, such as, laptop computers, desktop computers, workstations, personal digital assistants, servers, blade servers, mainframe computers, and other suitable computers. The electronic device can also represent various forms of mobile devices, such as, personal digital processing, cellular phones, smart phones, wearable devices (such as helmets, glasses, watches, etc.) and other similar computing devices. The components shown herein, their connections and relationships, and their functions are merely examples and are not intended to limit the implementation of the present invention described and / or claimed herein.

[0166] As Figure 4 shown, the electronic device 60 includes at least one processor 61, and a memory communicatively connected to at least one processor 61, such as a read-only memory (ROM) 62, a random access memory (RAM) 63, etc., where the memory stores a computer program executable by at least one processor, and the processor 61 can perform various appropriate actions and processes according to the computer program stored in the read-only memory (ROM) 62 or the computer program loaded from the storage unit 68 into the random access memory (RAM) 63. In the RAM 63, various programs and data required for the operation of the electronic device 60 can also be stored. The processor 61, the ROM 62, and the RAM 63 are connected to each other through a bus 64. The input / output (I / O) interface 65 is also connected to the bus 64.

[0167] Multiple components in the electronic device 60 are connected to the I / O interface 65, including: an input unit 66, such as a keyboard, a mouse, etc.; an output unit 67, such as various types of displays, speakers, etc.; a storage unit 68, such as a magnetic disk, an optical disc, etc.; and a communication unit 69, such as a network card, a modem, a wireless communication transceiver, etc. The communication unit 69 allows the electronic device 60 to exchange information / data with other devices via a computer network such as the Internet and / or various telecommunication networks.

[0168] The processor 61 can be various general-purpose and / or special-purpose processing components with processing and computing capabilities. Some examples of the processor 61 include, but are not limited to, a central processing unit (CPU), a graphics processing unit (GPU), various dedicated artificial intelligence (AI) computing chips, various processors running machine learning model algorithms, a digital signal processor (DSP), and any suitable processor, controller, microcontroller, etc. The processor 61 executes the various methods and processes described above, such as the method for determining reference parameters of in-vehicle components.

[0169] In some embodiments, the method for determining reference parameters of in-vehicle components can be implemented as a computer program, which is tangibly contained in a computer-readable storage medium, such as the storage unit 68. In some embodiments, part or all of the computer program can be loaded and / or installed onto the electronic device 60 via the ROM 62 and / or the communication unit 69. When the computer program is loaded into the RAM 63 and executed by the processor 61, one or more steps of the method for determining reference parameters of in-vehicle components described above can be executed. Alternatively, in other embodiments, the processor 61 can be configured to execute the method for determining reference parameters of in-vehicle components in any other suitable manner (e.g., by means of firmware).

[0170] The various embodiments of the systems and technologies described above in this article can be implemented in digital electronic circuit systems, integrated circuit systems, field-programmable gate arrays (FPGAs), application-specific integrated circuits (ASICs), application-specific standard products (ASSPs), systems-on-chip (SOCs), complex programmable logic devices (CPLDs), computer hardware, firmware, software, and / or combinations thereof. These various embodiments can include: being implemented in one or more computer programs, which can be executed and / or interpreted on a programmable system including at least one programmable processor, and the programmable processor can be a special or general programmable processor, and can receive data and instructions from a storage system, at least one input device, and at least one output device, and transmit the data and instructions to the storage system, the at least one input device, and the at least one output device.

[0171] A computer program for implementing the method of the present invention can be written in any combination of one or more programming languages. These computer programs can be provided to a processor of a general-purpose computer, a special-purpose computer, or other programmable data processing device, such that when the computer programs are executed by the processor, the functions / operations specified in the flowchart and / or block diagram are implemented. The computer programs can be executed entirely on the machine, partially on the machine, executed partially on the machine and partially on a remote machine as an independent software package, or executed entirely on a remote machine or server.

[0172] In the context of the present invention, a computer-readable storage medium can be a tangible medium that can contain or store a computer program for use by or in connection with an instruction execution system, apparatus, or device. The computer-readable storage medium can include, but is not limited to, electronic, magnetic, optical, electromagnetic, infrared, or semiconductor systems, apparatus, or devices, or any suitable combination of the foregoing. Alternatively, the computer-readable storage medium can be a machine-readable signal medium. More specific examples of the machine-readable storage medium would include an electrical connection based on one or more wires, a portable computer disk, a hard disk, a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disc read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing.

[0173] In order to provide interaction with a user, the systems and techniques described herein can be implemented on an electronic device having: a display device (e.g., a CRT (cathode ray tube) or LCD (liquid crystal display) monitor) for displaying information to the user; and a keyboard and a pointing device (e.g., a mouse or a trackball) through which the user can provide input to the electronic device. Other kinds of devices can also be used to provide interaction with the user; for example, the feedback provided to the user can be any form of sensory feedback (e.g., visual feedback, auditory feedback, or tactile feedback); and input from the user can be received in any form (including acoustic input, voice input, or tactile input).

[0174] The systems and techniques described herein can be implemented in a computing system including backend components (e.g., as a data server), or a computing system including middleware components (e.g., an application server), or a computing system including frontend components (e.g., a user computer having a graphical user interface or a web browser through which a user can interact with an implementation of the systems and techniques described herein), or a computing system including any combination of such backend components, middleware components, or frontend components. The components of the system can be interconnected to each other by digital data communication in any form or medium (e.g., a communication network). Examples of communication networks include: local area network (LAN), wide area network (WAN), blockchain network, and the Internet.

[0175] A computing system can include a client and a server. The client and the server are generally far from each other and typically interact through a communication network. The client - server relationship is created by computer programs running on respective computers and having a client - server relationship with each other. The server can be a cloud server, also known as a cloud computing server or cloud host, which is a host product in the cloud computing service system, and solves the defects of difficult management and weak business scalability existing in traditional physical hosts and VPS services.

[0176] In one embodiment, the embodiment of the present invention further includes a computer program product, which includes a computer program that, when executed by a processor, implements the method for determining reference parameters of vehicle interior components according to any embodiment of the present invention.

[0177] In the process of implementation, the computer program product can write computer program code for performing the operations of the present invention in one or more programming languages or combinations thereof. The programming languages include object - oriented programming languages such as Java, Smalltalk, C++, and also include conventional procedural programming languages such as the "C" language or similar programming languages. The program code can be executed entirely on the user's computer, partially on the user's computer, executed as an independent software package, partially on the user's computer and partially on a remote computer, or entirely on a remote computer or server. In the case of a remote computer, the remote computer can be connected to the user's computer through any type of network - including a local area network (LAN) or a wide area network (WAN)—or can be connected to an external computer (e.g., by connecting through an Internet service provider via the Internet).

[0178] It should be understood that the various forms of processes shown above can be used, with steps reordered, added or deleted. For example, the steps recited in the present invention can be executed in parallel, sequentially or in a different order, as long as the desired results of the technical solution of the present invention can be achieved, and no limitation is made herein.

[0179] The above specific embodiments do not constitute a limitation on the protection scope of the present invention. Those skilled in the art should understand that various modifications, combinations, sub - combinations and substitutions can be made according to design requirements and other factors. Any modifications, equivalent substitutions and improvements made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A method for determining reference parameters of in-vehicle components, characterized in that, Including: Obtaining a first concentration threshold and a second concentration threshold of volatile organic compounds in the vehicle interior, where the second temperature corresponding to the second concentration threshold is higher than the first temperature corresponding to the first concentration threshold; Performing a simulation based on the first predicted initial emission concentration, partition coefficient, and diffusion coefficient of vehicle interior components at the first temperature to obtain the first alternative volatile organic compound concentration of the vehicle interior components, where the first predicted initial emission concentration of the vehicle interior components at the first temperature is determined according to the first concentration threshold and the first adjustment parameter; Performing a simulation based on the second predicted initial emission concentration, partition coefficient, and diffusion coefficient of the vehicle interior components at the second temperature to obtain the second alternative volatile organic compound concentration of the vehicle interior components, where the second predicted initial emission concentration of the vehicle interior components at the second temperature is determined according to the second concentration threshold and the second adjustment parameter; Determining the minimum value of the first alternative volatile organic compound concentration and the second alternative volatile organic compound concentration as the reference concentration of volatile organic compounds of the vehicle interior components.

2. The method according to claim 1, characterized in that, Before determining the first predicted initial emission concentration of the vehicle interior components at the first temperature according to the first concentration threshold and the first adjustment parameter, it further includes: Determining the first adjustment parameter according to the partition coefficient and reduction ratio of the vehicle interior components at the first temperature, where the reduction ratio is equal to the ratio of the measured initial emission concentration of the vehicle interior components at the first temperature to the measured initial emission concentration at the second temperature.

3. The method according to claim 2, wherein Determining the first adjustment parameter according to the partition coefficient and reduction ratio of the vehicle interior components at the first temperature includes: Determining the ratio of the partition coefficient and reduction ratio of the vehicle interior components at the first temperature as the first adjustment parameter.

4. The method according to claim 1, characterized in that Before determining the second predicted initial emission concentration of the vehicle interior components at the second temperature according to the second concentration threshold and the second adjustment parameter, it further includes: Determining the second adjustment parameter according to the partition coefficient and measured initial emission concentration of the vehicle interior components at a third temperature and the measured initial emission concentration of the vehicle interior components at the second temperature.

5. The method according to claim 4, wherein Determining the second adjustment parameter according to the partition coefficient and measured initial emission concentration of the vehicle interior components at a third temperature and the measured initial emission concentration of the vehicle interior components at the second temperature includes: Performing a simulation based on the measured initial emission concentration, partition coefficient, and diffusion coefficient of the vehicle interior components at the third temperature to obtain the simulated surface concentration of the vehicle interior components at the third temperature; Determining the second adjustment parameter according to the partition coefficient and simulated surface concentration of the vehicle interior components at the third temperature and the measured initial emission concentration of the vehicle interior components at the second temperature.

6. The method according to claim 5, wherein Determining the second adjustment parameter according to the partition coefficient and simulated surface concentration of the vehicle interior components at the third temperature and the measured initial emission concentration of the vehicle interior components at the second temperature includes: Determine a third adjustment parameter according to the ratio of the partition coefficient and the simulated surface concentration of the in-vehicle component at the third temperature; Determine a second adjustment parameter according to the product of the third adjustment parameter and the measured initial emission concentration of the in-vehicle component at the second temperature.

7. The method according to any one of claims 4 to 6, characterized in that, The third temperature is the temperature of the in-vehicle component collected after the vehicle is heated in a sunlight simulation environmental chamber at a first irradiation intensity for a first preset time.

8. The method according to any one of claims 1-7, characterized in that, Based on the first predicted initial emission concentration, partition coefficient, and diffusion coefficient of the in-vehicle component at the first temperature, perform a simulation to obtain the first alternative volatile organic compound concentration of the in-vehicle component, including: Input the first predicted initial emission concentration, partition coefficient, and diffusion coefficient of the in-vehicle component at the first temperature into the in-vehicle component simulation emission model, and perform a simulation of the volatile organic compound emission process of the component in a preset finite space to obtain the first alternative volatile organic compound concentration of the in-vehicle component corresponding to the second preset time, where the second preset time is less than the first preset time.

9. A reference parameter determination device for in-vehicle components, characterized in that, Including: A concentration threshold acquisition module for acquiring a first concentration threshold and a second concentration threshold of volatile organic compounds in the vehicle, where the second temperature corresponding to the second concentration threshold is higher than the first temperature corresponding to the first concentration threshold; A first alternative volatile organic compound concentration determination module for performing a simulation based on the first predicted initial emission concentration, partition coefficient, and diffusion coefficient of the in-vehicle component at the first temperature to obtain the first alternative volatile organic compound concentration of the in-vehicle component, where the first predicted initial emission concentration of the in-vehicle component at the first temperature is determined according to the first concentration threshold and the first adjustment parameter; A second alternative volatile organic compound concentration determination module for performing a simulation based on the second predicted initial emission concentration, partition coefficient, and diffusion coefficient of the in-vehicle component at the second temperature to obtain the second alternative volatile organic compound concentration of the in-vehicle component, where the second predicted initial emission concentration of the in-vehicle component at the second temperature is determined according to the second concentration threshold and the second adjustment parameter; A volatile organic compound reference concentration determination module for the in-vehicle component, which determines the minimum value of the first alternative volatile organic compound concentration and the second alternative volatile organic compound concentration as the volatile organic compound reference concentration of the in-vehicle component.

10. An electronic device, characterized in that, The electronic device includes: At least one processor; and A memory communicatively connected to the at least one processor; where The memory stores a computer program executable by the at least one processor, and when the computer program is executed by the at least one processor, the at least one processor can execute the method for determining the reference parameters of the in-vehicle component according to any one of claims 1-8.

11. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores computer instructions for causing a processor to execute the method for determining the reference parameters of the in-vehicle component according to any one of claims 1-8 when executed.

12. A computer program product, characterized in that, The computer program product includes a computer program which, when executed by a processor, implements the method for determining reference parameters of in-vehicle components according to any one of claims 1-8.

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