Method and device for determining the health status of silk cultural relics

Abstract

This application provides a method and device for determining the health of a silk artifact. The method includes: obtaining the initial brightness, initial intrinsic viscosity, parameter values of multiple environmental parameters, cumulative illumination time, and cumulative exposure time of the silk artifact; determining the brightness change of the silk artifact to a target prediction time using a brightness change function model based on the cumulative illumination time, cumulative exposure time, and parameter values of the multiple environmental parameters; determining the intrinsic viscosity change of the silk artifact to a target prediction time using an intrinsic viscosity change function model based on the cumulative illumination time, cumulative exposure time, and parameter values of the multiple environmental parameters; and determining the health of the silk artifact at the target prediction time based on the initial brightness, initial intrinsic viscosity, brightness change, and intrinsic viscosity change. This solution can relatively accurately predict the health of a silk artifact at a specific time, reducing the complexity of determining the health of the silk artifact.

Description

Technical Field

[0001] The present application relates to the field of data processing technology, and in particular to a method and device for determining the health status of silk cultural relics. Background Art

[0002] Since silk cultural relics are protein fabrics, they are easily affected by light, temperature, humidity and microorganisms, causing aging and degradation, resulting in damage such as cracking and decay.

[0003] To better protect silk cultural relics, it is necessary to monitor the degree of deterioration of silk cultural relics in a timely manner within the collection environment so that appropriate conservation measures can be effectively implemented based on the deterioration of the silk cultural relics. However, currently, staff can only judge the current degree of deterioration of silk cultural relics based on experience, which is complex and difficult. Moreover, in many cases, in order to ensure timely and effective protection of silk cultural relics, it is necessary to predict the degree of deterioration of silk cultural relics at a certain point in the future in advance so that appropriate protective measures can be formulated and implemented in advance. However, it is currently impossible to effectively predict the health of silk cultural relics. Summary of the Invention

[0004] In view of this, the present application provides a method and device for determining the health of silk cultural relics, which can more accurately determine the health status of silk cultural relics in the present and future time, and reduce the complexity of determining the health status of silk cultural relics.

[0005] To achieve the above objectives, the present application provides a method for determining the health of silk cultural relics, comprising:

[0006] Obtain the initial lightness and initial intrinsic viscosity of silk cultural relics when they are preserved in museums;

[0007] Determining the cumulative illumination time and cumulative exposure time of the silk cultural relic to the harmful gas environment within a target evaluation time period, wherein the target evaluation time period is the period from the time the silk cultural relic is stored and entered into the museum to a target prediction time, wherein the target prediction time is the time at which the health status of the silk cultural relic needs to be predicted;

[0008] Obtaining parameter values of a plurality of environmental parameters in the museum that affect the brightness change and the intrinsic viscosity change of the silk cultural relic;

[0009] Determining, based on the cumulative illumination time, the cumulative exposure time, and the parameter values of the multiple environmental parameters, a brightness change function model of the silk cultural relic from the time of entry to the target predicted time, wherein the brightness change function model is a function model fitted based on the relationship between the brightness change of the silk cultural relic in the experimental environment and the illumination time, the exposure time to the harmful gas environment, and the experimental values of the multiple environmental parameters;

[0010] Determining, based on the cumulative illumination time, the cumulative exposure time, and the values of multiple environmental parameters, a change in the intrinsic viscosity of the silk cultural relic from the time of entry to the target predicted time using an intrinsic viscosity change function model, wherein the intrinsic viscosity change function model is a function model fitted based on the relationship between the change in the intrinsic viscosity of the silk cultural relic in the experimental environment and the illumination time, the exposure time to the harmful gas environment, and the experimental values of the multiple environmental parameters;

[0011] The health of the silk cultural relic at the target prediction moment is determined based on the initial lightness, the initial intrinsic viscosity, the lightness change and the intrinsic viscosity change.

[0012] In another aspect, the present application further provides a device for determining the health of a silk cultural relic, comprising:

[0013] An initial value obtaining unit, used to obtain the initial lightness and initial intrinsic viscosity of the silk cultural relic when it is preserved in a museum;

[0014] a time determination unit, configured to determine the cumulative illumination time and cumulative exposure time of the silk cultural relic to the harmful gas environment within a target evaluation time period, wherein the target evaluation time period is the period from the time the silk cultural relic is stored and entered into the museum to a target prediction time, wherein the target prediction time is the time at which the health status of the silk cultural relic needs to be predicted;

[0015] a parameter obtaining unit, configured to obtain parameter values of a plurality of environmental parameters in the museum that affect changes in brightness and intrinsic viscosity of the silk cultural relic;

[0016] a brightness determination unit, configured to determine, based on the cumulative illumination time, the cumulative exposure time, and the parameter values of the plurality of environmental parameters, a brightness change function model for determining a brightness change of the silk cultural relic from the time of entry to the museum to the target predicted time, wherein the brightness change function model is a function model fitted based on the relationship between the brightness change of the silk cultural relic in the experimental environment and the illumination time, the exposure time to the harmful gas environment, and the experimental values of the plurality of environmental parameters;

[0017] a viscosity determination unit, configured to determine, based on the cumulative illumination time, the cumulative exposure time, and the parameter values of the plurality of environmental parameters, a change in the intrinsic viscosity of the silk cultural relic from the time of entry to the museum to the target predicted time using an intrinsic viscosity change function model, wherein the intrinsic viscosity change function model is a function model fitted based on the relationship between the change in the intrinsic viscosity of the silk cultural relic in the experimental environment and the illumination time, the exposure time to the harmful gas environment, and the experimental values of the plurality of environmental parameters;

[0018] The health determination unit is used to determine the health of the silk cultural relic at the target prediction time based on the initial lightness, the initial intrinsic viscosity, the lightness change and the intrinsic viscosity change.

[0019] As can be seen above, in this application, the inventors, through extensive data testing and verification, have determined that the degree of deterioration of silk cultural relics exhibits a unique relationship with their lightness and intrinsic viscosity. Furthermore, based on the lightness and intrinsic viscosity variations of silk fabrics in the experimental environment, the inventors have fitted lightness and intrinsic viscosity variation function models for silk fabrics. On this basis, in this application, as long as the parameter values of multiple environmental parameters that affect the brightness changes and characteristic viscosity changes of silk cultural relics in the museum are obtained, and the cumulative illumination time and cumulative exposure time of the silk cultural relics in the harmful gas environment from the time they enter the museum to the predicted time to be evaluated are determined, the brightness change function model and the characteristic viscosity change function model can be used to accurately predict the brightness change and characteristic viscosity change of the silk cultural relics from the time they enter the museum to the predicted time. Therefore, combined with the initial characteristic viscosity and initial brightness of the silk cultural relics when they enter the museum and the predicted brightness change and characteristic viscosity change, the health of the silk cultural relics at any time at present and in the future can be determined more accurately and flexibly, which not only reduces the difficulty and complexity of determining the health of silk cultural relics, but also makes it possible to adopt timely and effective protection plans based on the deterioration of the silk cultural relics in advance. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are merely embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without any creative work.

[0021] Figure 1 A schematic flow chart of a method for determining the health status of silk cultural relics provided in an embodiment of the present application is shown;

[0022] Figure 2Another flow chart of the method for determining the health status of silk cultural relics provided in an embodiment of the present application is shown;

[0023] Figure 3 The figure shows a curve diagram of the change in brightness of silk fabrics with a low degree of aging over time under the conditions of fixed light intensity and humidity and different temperatures.

[0024] Figure 4 The figure shows a curve diagram of the change in brightness of a silk fabric with a high degree of aging over time under the conditions of fixed light intensity and humidity and different temperatures.

[0025] Figure 5 The figure shows a curve diagram of the change of the intrinsic viscosity of a silk fabric with a low degree of aging over time under the conditions of fixed light intensity and humidity and different temperatures;

[0026] Figure 6 The figure shows a curve diagram of the change of the intrinsic viscosity of a silk fabric with a high degree of aging over time under the conditions of fixed light intensity and humidity and different temperatures;

[0027] Figure 7 The figure shows a curve diagram of the change in brightness of silk fabrics with a low degree of aging over time when the temperature is fixed but the concentration multiple of harmful gases and humidity are changed;

[0028] Figure 8 A schematic diagram showing the relationship between the concentration multiple of harmful gases and the brightness change of silk fabrics with a low degree of aging under constant temperature and humidity conditions is shown;

[0029] Figure 9 The figure shows a curve diagram of the change in brightness of a silk fabric with a high degree of aging over time when the temperature is fixed but the concentration multiple of harmful gases and humidity are changed;

[0030] Figure 10 A schematic diagram showing the relationship between the concentration multiple of harmful gases and the brightness change of silk fabrics with a high degree of aging under constant temperature and humidity conditions is shown;

[0031] Figure 11 The figure shows a curve showing the change of the intrinsic viscosity of a silk fabric with a low degree of aging over time under the condition of constant temperature and changes in the concentration multiple of harmful gases and humidity;

[0032] Figure 12 A schematic diagram showing the relationship between the gas concentration multiple of harmful gases and the change in the intrinsic viscosity of silk fabrics with a low degree of aging under constant temperature and humidity;

[0033] Figure 13 The figure shows a curve showing the change of the intrinsic viscosity of a silk fabric with a high degree of aging over time when the temperature is fixed and the concentration multiple of harmful gases and humidity are changed;

[0034] Figure 14 A schematic diagram showing the relationship between the concentration multiple of harmful gases and the change in intrinsic viscosity of silk fabrics with a high degree of aging under constant temperature and humidity conditions is shown;

[0035] Figure 15 A schematic diagram showing a comparison of two silk cultural relic samples in an embodiment of the present application

[0036] Figure 16 A schematic diagram of the composition structure of an apparatus for determining the health status of silk cultural relics provided in an embodiment of the present application is shown. DETAILED DESCRIPTION

[0037] The following will be combined with the drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0038] like Figure 1 As shown, it shows a flow chart of the method for determining the health level of silk cultural relics provided in an embodiment of the present application. The method of this embodiment can be applied to any computer device, such as a personal computer or server, without limitation.

[0039] The method of this embodiment may include the following steps:

[0040] S101, obtaining the initial lightness and initial intrinsic viscosity of the silk cultural relic when it is preserved in the museum.

[0041] The brightness of a silk cultural relic is the brightness of the silk fabric as a cultural relic, and the brightness of a silk fabric refers to the degree of lightness or darkness of the silk fabric.

[0042] The initial brightness refers to the brightness of the silk cultural relic when it is brought into the museum (preserved in the museum). The value of the initial brightness can be obtained by testing the brightness of the silk cultural relic when the silk cultural relic is brought into the museum.

[0043] Intrinsic viscosity is one of the viscosity indicators. Silk fabrics are made of silk protein, a biopolymer. The breakage of its polymer chains is the key reason for the decline in its mechanical properties. A decrease in polymer molecular weight is often accompanied by a decrease in intrinsic viscosity, and the relationship generally conforms to the Mark-Houwink-Sakuradada equation. Mark-Houwink-Sakuradada provides the relationship between the intrinsic viscosity [η] of a polymer solution and the molecular weight (also known as the viscosity-average molecular weight) M of the polymer: [η] = KMα, where K and α are Mark-Houwink parameters. Based on this, the degradation of silk fabrics can be analyzed by measuring the intrinsic viscosity.

[0044] The initial intrinsic viscosity of a silk cultural relic refers to the intrinsic viscosity of the silk cultural relic at the time of its arrival at the museum. This can be determined by testing the intrinsic viscosity of the silk cultural relic at the time of its arrival at the museum.

[0045] It can be seen that since the initial brightness and characteristic viscosity of silk cultural relics are determined and can be tested when they enter the museum, the initial brightness and initial characteristic viscosity are both known values.

[0046] S102, determining the cumulative illumination time and the cumulative exposure time of the silk cultural relics in the harmful gas environment during the target evaluation time period.

[0047] The target evaluation period is the period from the time the silk cultural relic is preserved and enters the museum to the target prediction time, and the target prediction time is the time when the health of the silk cultural relic needs to be predicted.

[0048] For example, suppose you need to predict the health status of a silk artifact at a point in time two years after the current moment. Then the target prediction moment is the moment two years after the current moment.

[0049] The cumulative illumination time is based on the total cumulative duration that the silk cultural relics actually receive illumination during the target evaluation period.

[0050] It is understandable that for a silk cultural relic, the exhibition schedule for the cultural relic is fixed within a certain period of time (e.g., each year or each quarter). The exhibition schedule can indicate the time periods during which the cultural relic needs to be displayed in the display cabinet. Based on this, the exhibition schedule can be used to determine the exhibition time of the cultural relic in the museum display cabinet and the storage time in the warehouse during the target evaluation period. Moreover, the daily light exposure time of the museum display cabinet and the daily light exposure time of the warehouse are also known and determined.

[0051] On this basis, the cumulative illumination time can be determined by the user based on the exhibition table of the silk cultural relic and the daily illumination conditions of the silk cultural relic in the exhibition hall and the storeroom. The cumulative illumination time can also be calculated by a computer device, for example, the computer device calculates the total illumination time of the silk cultural relic during the target evaluation period based on the exhibition table and the pre-set daily illumination time of the silk cultural relic in the display case and the daily illumination time of the silk cultural relic in the storeroom.

[0052] The cumulative exposure time refers to the total duration that the silk cultural relics are exposed to the hazardous gas environment within the museum. This cumulative exposure time can be estimated by the user or calculated by computer equipment based on the exhibition schedule of the silk cultural relics, the daily exposure time of the silk cultural relics in the display cabinet, and the daily exposure time of the silk cultural relics in the storage room. There are no restrictions on this.

[0053] S103, obtaining parameter values of multiple environmental parameters that affect the brightness change and intrinsic viscosity change of silk cultural relics in the museum.

[0054] The parameter value of the environmental parameter refers to the specific value of the environmental parameter. For example, the parameter value of the storage temperature is the temperature value of the storage temperature.

[0055] For example, the multiple environmental parameters may include: the storage temperature of the silk cultural relics in the museum, the storage relative humidity of the silk cultural relics in the museum, the light intensity of the silk cultural relics, and the relative concentration of harmful gases in the museum relative to the set collection standard concentration.

[0056] The storage temperature of the silk cultural relics in the museum can be the measured temperature of the museum's display case or warehouse, and can be determined based on the specific conditions or duration of time the silk cultural relics to be evaluated have been in the museum's display case or warehouse. Of course, it can also be determined based on a comprehensive combination of the temperatures of the museum's display case or warehouse, or based on the temperatures of the display case and warehouse and the duration of time the silk cultural relics have been in the display case and warehouse during the target evaluation period, without limitation.

[0057] Similarly, the storage relative humidity can be the measured relative humidity of a display case or a warehouse in a museum, and can be determined based on the specific conditions or duration of time the silk cultural relic to be evaluated has been in the display case or warehouse. Of course, the storage relative humidity can also be determined based on a comprehensive assessment of the relative humidity of the display case and warehouse, or further based on the duration of time the silk cultural relic has been in the display case or warehouse during the target evaluation period, without limitation.

[0058] The light intensity of silk cultural relics can be measured by using an instrument for measuring light radiation illuminance, and there is no restriction on this.

[0059] The set collection standard concentration can be the standard concentration of harmful gases set in the current museum collection standards. For example, according to the provisions of the national industry standard "Museum Building Design Standard" (JGJ66-2015), the concentration limit of SO2 and NO2 in the air of collection warehouses and exhibition halls is 0.05mg / m 3 and 0.08 mg / m 3 Based on this, the relative concentration of harmful gases in a museum relative to the set collection standard concentration can be a multiple of the measured actual concentration of harmful gases in the museum relative to the collection standard concentration.

[0060] The parameter values of multiple environmental parameters can be determined in advance in combination with the measurement values of corresponding instruments, and the parameter values of the environmental parameters measured by the instruments can be sent to the computer device, or input into the computer device by the user, without limitation.

[0061] The above is an example of several environmental parameters that affect the brightness change and intrinsic viscosity change of silk fabrics. In actual applications, there may be other possible environmental parameters, which are not limited.

[0062] S104, based on the cumulative illumination time, the cumulative exposure time and the parameter values of multiple environmental parameters, using the brightness change function model, determine the brightness change of the silk cultural relic from the time of entry to the target prediction time.

[0063] The brightness change function model is a fitted function model based on the relationship between the brightness change of the silk fabric in the experimental environment and the light exposure time, exposure time to the harmful gas environment, and experimental values of multiple environmental parameters. The light exposure time here is the cumulative time the silk fabric was exposed to light in the experimental environment, and the exposure time is similarly the cumulative time the silk fabric was exposed to the harmful gas environment in the experimental environment.

[0064] It is understandable that the change in brightness of a silk cultural relic from the moment it enters the museum to the target prediction moment is the difference between the brightness of the silk cultural relic at the target prediction moment and the initial brightness of the silk cultural relic. However, in actual application scenarios, it is difficult to measure the brightness of the silk cultural relic in real time after the silk cultural relic enters the museum, and it is also impossible to determine the brightness of the silk cultural relic at a certain moment in the future through measurement.

[0065] Based on this, in this application, the brightness of silk fabrics can be tested in an experimental environment under different lighting durations, different exposure times in a harmful gas environment, and different parameter values of multiple environmental parameters (experimental values in the experimental environment). The relationship between the brightness change of the silk fabric and these parameters can be fitted to obtain a brightness change function model, and then the brightness change function model and related parameters can be used to more accurately predict the brightness change of silk cultural relics in a collection environment.

[0066] Of course, the process of fitting the brightness change function model can also take into account the difference between the brightness change of silk fabrics in the experimental environment and the brightness change in the museum environment. The details will be explained later and will not be repeated here.

[0067] S105 , based on the cumulative illumination time, the cumulative exposure time and the parameter values of multiple environmental parameters, using the characteristic viscosity change function model, determine the change in the characteristic viscosity of the silk cultural relic from the time of entry to the target prediction time.

[0068] The intrinsic viscosity change function model is a function model fitted based on the relationship between the intrinsic viscosity change of silk fabrics in the experimental environment and the illumination time, the exposure time to the harmful gas environment and the experimental values of multiple environmental parameters.

[0069] Similar to constructing a brightness change function model, this application simulates experimental scenarios of silk fabrics under different lighting times, exposure times to harmful gases, and different values of multiple environmental parameters, and measures the changes in the characteristic viscosity of the silk fabrics, thereby fitting a change function model of the silk fabrics to accurately reflect the changes in the characteristic viscosity of the silk fabrics caused by the influence of cumulative lighting time, cumulative exposure time, and parameter values of multiple environmental parameters.

[0070] S106, determining the health of the silk cultural relic at the target prediction time based on the initial brightness, the initial intrinsic viscosity, the brightness change, and the intrinsic viscosity change.

[0071] The inventors of this application have discovered through research that there are a variety of indicators that can reflect the degree of deterioration of silk fabrics, such as crystallinity, orientation, and amino acid content. However, the relationship between these indicators is unclear, and there is no obvious pattern in the changes of some indicators. It is difficult to objectively and accurately predict the degree of deterioration of silk fabrics at a certain point in the future.

[0072] The inventors of this application have determined, through comparison and verification of a large amount of data, that there is a specific pattern between the lightness and characteristic viscosity of silk fabrics and the degree of deterioration of silk fabrics in museum collections. By using the lightness and characteristic viscosity of silk cultural relics as quantifiable indicators, it is possible to more reliably determine the degree of deterioration of silk cultural relics caused by changes in various parameters in the museum environment.

[0073] For example, the predicted lightness of a silk artifact at the target prediction time can be determined by combining the initial lightness and the change in lightness. Similarly, the predicted intrinsic viscosity of a silk artifact at the target prediction time can be determined by combining the initial intrinsic viscosity and the change in intrinsic viscosity. Based on this, the health of the silk artifact can be determined by combining the degradation degree associated with the predicted lightness and the degradation degree associated with the predicted intrinsic viscosity.

[0074] For example, in one possible implementation, before determining the health of a silk cultural relic, a pre-set baseline brightness and baseline intrinsic viscosity applicable to the silk cultural relic can be obtained. Accordingly, the health of the silk cultural relic at the target prediction time can be determined based on the baseline brightness, baseline intrinsic viscosity, initial brightness, initial intrinsic viscosity, change in brightness, and change in intrinsic viscosity.

[0075] The reference brightness can be the brightness of a silk fabric of the same silk type as the silk cultural relic in its optimal state. For example, the reference brightness can be based on the brightness of freshly produced silk fabric. Of course, the specific value of the reference brightness can be set as needed. For example, the reference brightness can be set to a constant of 100.

[0076] Similarly, the baseline intrinsic viscosity can be the intrinsic viscosity of a silk fabric belonging to the same silk category as the silk cultural relic, in its optimal state, and can also be set as needed. For example, the intrinsic viscosity of newly produced fresh silk can be used as the baseline intrinsic viscosity, and the specific value can be obtained through testing. Of course, depending on the silk category to which the silk cultural relic belongs, the baseline intrinsic viscosity may also vary. For example, using mulberry silk as the benchmark, the baseline intrinsic viscosity can be 0.2980. For other silk materials, the specific value can be measured and set as needed.

[0077] In an optional approach, the present application can also pre-simulate a large number of parameters such as light, temperature, humidity, and harmful gas conditions in the experimental environment to construct a silk health assessment model for evaluating the health of the silk cultural relic. Based on this, the present application can use the silk health assessment model provided by the following formula 1 to determine the health of the silk cultural relic at the target prediction time:

[0078]

[0079] Among them, H is the health level of silk cultural relics; L0 * is the reference brightness; L M * is the initial brightness of the silk cultural relic when it enters the museum; ΔL * is the brightness change of the silk cultural relic; [η]0 is the base intrinsic viscosity; [η]M is the initial characteristic viscosity of the silk cultural relic when it enters the museum; Δ[η] is the change in the characteristic viscosity of the silk cultural relic.

[0080] It can be seen that by substituting the values of relevant parameters into the evaluation model shown in Formula 1, the health status of silk cultural relics at the target prediction time can be determined.

[0081] In the present application, the health of silk cultural relics can intuitively reflect the degree of deterioration of the silk cultural relics. For example, the higher the health of the silk cultural relics, the lower the degree of deterioration of the silk cultural relics.

[0082] As can be seen above, in this application, the inventors, through extensive data testing and verification, have determined that the degree of deterioration of silk cultural relics exhibits a unique relationship with their lightness and intrinsic viscosity. Furthermore, based on the lightness and intrinsic viscosity variations of silk fabrics in the experimental environment, the inventors have fitted lightness and intrinsic viscosity variation function models for silk fabrics.

[0083] On this basis, in this application, as long as the parameter values of multiple environmental parameters that affect the brightness changes and characteristic viscosity changes of silk cultural relics in the museum are obtained, and the cumulative illumination time and cumulative exposure time of the silk cultural relics in the harmful gas environment from the time they enter the museum to the predicted time to be evaluated are determined, the brightness change function model and the characteristic viscosity change function model can be used to accurately predict the brightness change and characteristic viscosity change of the silk cultural relics from the time they enter the museum to the predicted time. Therefore, combined with the initial characteristic viscosity and initial brightness of the silk cultural relics when they enter the museum and the predicted brightness change and characteristic viscosity change, the health of the silk cultural relics at any time at present and in the future can be determined more accurately and flexibly, which not only reduces the difficulty and complexity of determining the health of silk cultural relics, but also makes it possible to adopt timely and effective protection plans based on the deterioration of the silk cultural relics in advance.

[0084] It can be understood that based on the scenarios of silk fabrics simulated in an experimental environment under different lighting times, exposure times to harmful gases, and parameter values of multiple environmental parameters, and by measuring the changes in the characteristic viscosity and brightness of the silk fabrics, a brightness change function model and a characteristic viscosity change function model can be constructed respectively.

[0085] It is understandable that for silk textile artifacts of different silk types, different brightness change function models and characteristic viscosity change function models can be constructed respectively; of course, if silk textile artifacts of different silk types have little influence on brightness change and characteristic viscosity change, the same set of brightness change function models and a set of characteristic viscosity change function models can also correspond to silk textile artifacts of different silk types.

[0086] In particular, the inventors of this application discovered through research that, depending on the degree of aging of silk fabrics, the changes in lightness and intrinsic viscosity caused by various factors also vary. Based on this, the inventors of this application constructed different lightness change function models and intrinsic viscosity change function models for silk fabrics of different aging degrees.

[0087] For ease of understanding, the following is an explanation based on an implementation. Figure 2 , which shows another flow chart of the method for determining the health level of silk cultural relics in an embodiment of the present application. The method of this embodiment may include:

[0088] S201, obtaining the initial brightness and initial intrinsic viscosity of the silk cultural relic when it is preserved in the museum, as well as a pre-set reference brightness and reference intrinsic viscosity applicable to the silk cultural relic.

[0089] It should be noted that, considering that museums may periodically or irregularly remove silk cultural relics and test their lightness and intrinsic viscosity before re-preserving them in the museum, in order to more accurately predict the health of silk cultural relics, after each test of the lightness and intrinsic viscosity of a silk cultural relic, the time of re-preservation in the museum can be used as the latest entry time, and the lightness of the silk cultural relic last tested is used to update the initial lightness of the silk cultural relic, and the initial intrinsic viscosity of the silk cultural relic last tested is used to more accurately predict the lightness and intrinsic viscosity changes of the silk cultural relic at any time after the last test, and accurately determine the health of the silk cultural relic.

[0090] S202, determining the cumulative illumination time and the cumulative exposure time of the silk cultural relic in the harmful gas environment within the target evaluation time period.

[0091] The target evaluation time period is the time period from the time the silk cultural relic is preserved and entered into the museum to the target prediction time, and the target prediction time is the time when the health of the silk cultural relic needs to be predicted.

[0092] S203 , obtaining parameter values of multiple environmental parameters in the museum that affect the brightness change and the intrinsic viscosity change of the silk cultural relic.

[0093] As previously mentioned, the multiple environmental parameters may include: the storage temperature of the silk cultural relic in the museum, the relative humidity of the silk cultural relic in the museum, the light intensity of the silk cultural relic, and the relative concentration of harmful gases in the museum relative to the set collection standards. For detailed descriptions, please refer to the previous content and will not be repeated here.

[0094] For the above steps S201 to S203 , reference can be made to the relevant introduction of the previous embodiment and will not be repeated here.

[0095] S204, determining the brightness aging category and the characteristic viscosity aging category of the silk textile cultural relic at the time of entry into the museum.

[0096] In this application, the brightness aging category can be divided into two categories: low brightness aging and high brightness aging. Therefore, the brightness aging category of silk cultural relics at the time of entering the museum can be low brightness aging or high brightness aging.

[0097] It is understandable that, since the initial brightness of the silk cultural relic at the time of entry is known, a brightness aging threshold can be set. If the initial brightness is not less than the set brightness aging threshold, it is determined that the brightness aging degree of the silk cultural relic is low, and the brightness aging category of the silk cultural relic belongs to low brightness aging; if the initial brightness is less than the brightness aging threshold, it is determined that the brightness aging degree of the silk cultural relic is high, and the brightness aging category of the silk cultural relic belongs to high brightness aging. For example, the brightness aging threshold can be set to 65. Accordingly, if the initial brightness is less than 65, it is determined that the brightness aging category of the silk cultural relic belongs to high brightness aging.

[0098] Of course, the brightness aging category of the silk textile artifacts at the time of entry into the museum can also be input by the user, and there is no restriction on this.

[0099] Among them, the characteristic viscosity aging category is divided into two types: low-level characteristic viscosity aging and high-level characteristic viscosity aging. Therefore, the characteristic viscosity aging category of silk textile cultural relics at the time of entering the museum belongs to low-level characteristic viscosity aging or high-level characteristic viscosity aging.

[0100] Similar to determining the brightness aging category, a characteristic viscosity aging threshold can be set in advance. If the initial characteristic viscosity of the silk cultural relic at the time of entering the museum is not less than the set characteristic viscosity aging threshold, the characteristic viscosity aging category of the silk cultural relic is determined to be low-degree characteristic viscosity aging; conversely, if the initial characteristic viscosity of the silk cultural relic at the time of entering the museum is less than the set characteristic viscosity aging threshold, the characteristic viscosity aging category of the silk cultural relic is determined to be high-degree characteristic viscosity aging.

[0101] For example, the intrinsic viscosity aging threshold may be 0.12. If the initial intrinsic viscosity of a silk artifact is not less than 0.12, the intrinsic viscosity aging category of the silk artifact is determined to be low intrinsic viscosity aging. Conversely, if the initial intrinsic viscosity of the silk artifact is less than 0.12, the silk artifact is determined to be high intrinsic viscosity aging.

[0102] Of course, the intrinsic viscosity aging category of the silk textile artifacts can also be input by the user, and there is no restriction on this.

[0103] S205. If the brightness aging category of the silk cultural relic belongs to low brightness aging, the brightness change of the silk cultural relic from the time of entry into the museum to the target prediction time is determined using the first brightness change function model based on the cumulative illumination time, the cumulative exposure time and the parameter values of multiple environmental parameters.

[0104] S206. If the brightness aging category of the silk cultural relic belongs to high brightness aging, the brightness change of the silk cultural relic from the time of entry into the museum to the target prediction time is determined using the second brightness change function model based on the cumulative illumination time, the cumulative exposure time and the parameter values of multiple environmental parameters.

[0105] Among them, the first brightness change function model is a function model fitted based on the relationship between the brightness change of the first type of silk fabric in the experimental environment and the illumination time, the exposure time to the harmful gas environment and the experimental values of the multiple environmental parameters.

[0106] The second brightness change function model is a function model fitted based on the relationship between the brightness change of the second type of silk fabric in the experimental environment and the illumination time, the exposure time in the harmful gas environment and the experimental values of the multiple environmental parameters.

[0107] Among them, the lightness aging category of the first type of silk fabric belongs to low lightness aging, and the lightness aging category of the second type of silk fabric is high lightness aging.

[0108] In one possible implementation, in order to determine the brightness changes and characteristic viscosity changes of silk cultural relics as accurately as possible, in this application, obtaining multiple environmental parameters in the museum may include: the storage temperature of the silk cultural relics in the museum, the storage relative humidity of the silk cultural relics in the museum, the light intensity of the silk cultural relics, and the relative concentration of harmful gases in the museum relative to the set collection standards.

[0109] On this basis, this application also needs to simulate the brightness changes of different types of silk fabrics in environments with different temperatures, humidity, light levels, and relative concentrations of harmful gases under experimental conditions. Based on this, in this application, the first brightness change function model obtained through experimental fitting can be shown as the following formula 2:

[0110]

[0111] Among them, Formula 2 is applicable to the case where the initial brightness of the silk cultural relic at the time of entering the museum is not less than the set brightness aging threshold (for example, the brightness aging threshold is 65).

[0112] Similarly, the second brightness change function model fitted in this application can be shown as the following formula 3:

[0113]

[0114] Among them, Formula 3 is applicable to the case where the initial brightness of the silk cultural relic at the time of entering the museum is less than the set brightness aging threshold (for example, the brightness aging threshold is 65).

[0115] In the above formulas 2 and 3, ΔL * is the brightness change; T is the storage temperature of silk cultural relics in the museum (unit: degrees Celsius, ℃); E is the light intensity of the silk cultural relics (unit: lux, lux); RH is the relative humidity of the silk cultural relics in the museum (unit: percent, %); c is the relative concentration of harmful gases in the museum (dimensionless number);

[0116] t1 is the cumulative illumination time of silk cultural relics (unit: hour, h), and t2 is the cumulative exposure time of silk cultural relics (unit: hour, h).

[0117] S207, if the intrinsic viscosity aging category of the silk cultural relic is low-level intrinsic viscosity aging, based on the cumulative illumination time, the cumulative exposure time and the parameter values of multiple environmental parameters, the first intrinsic viscosity change function model is used to determine the intrinsic viscosity change of the silk cultural relic from the time of entry into the museum to the target prediction time.

[0118] S208: If the intrinsic viscosity aging category of the silk cultural relic is high intrinsic viscosity aging, a second intrinsic viscosity change function model is used to determine a change in the intrinsic viscosity of the silk cultural relic from the time of entry to the museum to the target prediction time based on the cumulative illumination time, the cumulative exposure time, and the values of multiple environmental parameters.

[0119] The first intrinsic viscosity change function model is a function model fitted based on the relationship between the intrinsic viscosity change of the third type of silk fabric in the experimental environment and the light exposure time, the exposure time to the harmful gas environment, and the experimental values of multiple environmental parameters;

[0120] The second intrinsic viscosity change function model is a function model fitted based on the relationship between the intrinsic viscosity change of the fourth type of silk fabric in the experimental environment and the illumination time, the exposure time to the harmful gas environment and the experimental values of multiple environmental parameters.

[0121] Among them, the intrinsic viscosity aging category of the third type of silk fabric belongs to low degree of intrinsic viscosity aging, and the intrinsic viscosity aging category of the fourth type of silk fabric belongs to high degree of intrinsic viscosity aging.

[0122] In one possible implementation, as described above, in order to determine the change in the characteristic viscosity of silk cultural relics as accurately as possible, multiple environmental parameters may include: the storage temperature of the silk cultural relics in the museum, the storage relative humidity of the silk cultural relics in the museum, the light intensity of the silk cultural relics, and the relative concentration of harmful gases in the museum relative to the set collection standards.

[0123] On this basis, this application also needs to simulate the changes in the intrinsic viscosity of different types of silk fabrics in environments with different temperatures, humidity, light intensity, and relative concentrations of harmful gases under experimental conditions. Based on this, in this application, the first intrinsic viscosity change function model obtained through experimental fitting can be shown as the following formula 4:

[0124]

[0125] Similarly, the second intrinsic viscosity variation function model is shown in the following formula 5:

[0126]

[0127] In Formula 4 and Formula 5, Δη is the change in intrinsic viscosity;

[0128] The other parameters are the same as those in the previous formula 2 and formula 3 and will not be repeated here.

[0129] For example, Formula 4 may be applicable when the initial intrinsic viscosity is greater than or equal to 0.12, while Formula 5 may be applicable when the initial intrinsic viscosity is less than 0.12.

[0130] S209, based on the reference brightness, reference intrinsic viscosity, initial brightness, initial intrinsic viscosity, brightness change and intrinsic viscosity change, using a silk health evaluation model, determine the health of the silk cultural relic at the target prediction time.

[0131] The silk fabric health evaluation model can be found in the previous formula 1 and will not be described in detail here.

[0132] This step S209 is explained by taking the silk fabric health evaluation model to determine the health of the silk fabric cultural relic as an example. The other methods mentioned above are also applicable to this embodiment and will not be described in detail here.

[0133] In order to more clearly understand the fitting or construction of the several models mentioned above in this application, the following is an example of the construction of a health evaluation model, and the use of silk fabrics with different degrees of lightness aging and characteristic viscosity aging to conduct experiments under different experimental environments, and fitting a first lightness change function model, a second lightness change function model, a first characteristic viscosity change function model and a second characteristic viscosity change function model. A possible process is explained as an example.

[0134] First, the formula for evaluating the health level H of silk fabrics (also applicable to silk cultural relics) is defined as follows:

[0135]

[0136] Among them, g(t) is the lightness L of silk fabric * The functional relationship between η and time t, h(t) is the functional relationship between the intrinsic viscosity [η] of silk fabric and time t.

[0137] Among them, after research, it was found that: lightness L * The functional relationship between t and time is as follows:

[0138]

[0139] Where L0 * is the reference brightness, such as the brightness of fresh silk fabrics (which can be regarded as a constant of 100), L M * is the initial brightness of the silk cultural relic in the collection environment (tested at the time of collection and can be regarded as a constant), Δ L * It is the brightness change (also referred to as brightness change value in this application) of the silk cultural relic after time t (such as the target evaluation time period mentioned above).

[0140] Environmental factors will affect L * As time increases, Δ L * gradually increases, and g(t1) gradually decreases.

[0141] The intrinsic viscosity [η] and time t have a functional relationship as shown in the following formula 8:

[0142]

[0143] Where [η]0 is the reference intrinsic viscosity, for example, the intrinsic viscosity of fresh silk can be used (which can be obtained by testing fresh silk and can be regarded as a constant), [η] M is the initial intrinsic viscosity of the silk cultural relic in the collection environment (tested at the time of collection and can be regarded as a constant), and Δ[η] is the change in the intrinsic viscosity of the silk cultural relic after time t (also referred to as the intrinsic viscosity change value in this application).

[0144] Environmental factors will affect the rate of change of Δ[η]. As time t increases, Δ[η] gradually decreases and h(t) gradually decreases.

[0145] The following deduces the functional model of the lightness change and intrinsic viscosity change of silk cultural relics by combining the influence of different factors:

[0146] 1. Analysis of the silk fabric deterioration prediction model dominated by light factors

[0147] 1. Analyze the brightness change value ΔL * Relationship with temperature T

[0148] 1.1. For silk fabrics with low aging degree

[0149] For silk fabrics that were pre-aged for 5 hours (at this time, the lightness aging degree is relatively low), the experimental results of each group were obtained as shown in Table 1:

[0150] Table 1

[0151]

[0152] The brightness change ΔL constructed based on Table 1 * The curve of change over time is as follows Figure 3 As shown. Figure 3 The horizontal axis represents time, and the vertical axis represents the brightness change. The two curves correspond to the brightness change curves over time under two different lighting environments in Table 1.

[0153] Combined with Table 1 and Figure 3 It can be seen that the influence of temperature on the lightness change trend of silk fabrics is not significant, and there is only a small change in the coefficient b of the logarithmic term to be determined in the fitting equation. In addition, the effect of temperature on the reaction rate follows the Arrhenius formula. Therefore, within a certain temperature range, it can be considered that the temperature T and the logarithmic coefficient b are linearly related, thus fitting the equation shown in the following formula 9:

[0154] b = 0.02207T + 3.862 (Formula 9);

[0155] Therefore, when the light intensity is constant (i.e. 100,000 lux), in an environment with a temperature of T, the brightness change value of the silk fabric at any time is ΔL * It can be expressed as formula 10:

[0156] ΔL*=(0.02207T+3.862)ln(t+1) (Formula 10);

[0157] Furthermore, considering that the experimental illumination condition was 100,000 lux, while the current collection environmental control standard requires an annual exposure limit of 50,000 lux / hour, according to the inverse principle, one hour of exposure under the experimental lighting conditions is approximately equivalent to two years of exposure under the current collection environmental control standard. Therefore, after conversion, for silk fabrics with a low degree of aging, the actual cumulative exposure time t1 (unit: hours) yields the following relationship, as shown in Formula 11:

[0158]

[0159] Wherein, E is the actual light intensity of the silk fabric, and the unit is lux.

[0160] 1.2. For silk fabrics with a high degree of aging

[0161] For silk fabrics that were pre-aged for 30 hours (at this time, the lightness aging degree is relatively high), the experimental results of each group were obtained as shown in Table 2:

[0162] Table 2

[0163]

[0164] The brightness change ΔL obtained based on the lighting environment shown in Table 2 * The curve of change over time is as follows Figure 4 As shown. Figure 4 The horizontal axis represents time, and the vertical axis represents the brightness change. The two curves correspond to the brightness change curves over time under two different lighting environments in Table 2.

[0165] The influence of temperature on the lightness trend of silk fabrics is not significant. The logarithmic coefficient b only changes slightly. The effect of temperature on the reaction rate follows the Arrhenius formula. Therefore, within a certain temperature range, it can be considered that the temperature T and the logarithmic coefficient b are linearly related, thus fitting the equation shown in the following formula 12:

[0166] b=0.02179T+2.269 (Formula 12);

[0167] Therefore, when the light intensity is constant (100,000 lux), in an environment with a temperature of T, after any time t1 (unit: h), the brightness change value ΔL* of a silk cultural relic with a high degree of aging can be expressed as the following formula 13:

[0168]

[0169] The relevant parameters in the above formula are the same as those introduced above and will not be repeated here.

[0170] 2. Analyze the relationship between the change in intrinsic viscosity and temperature

[0171] 2.1. For silk fabrics with low aging degree

[0172] For silk fabrics that were pre-aged for 5 hours (at this time, the intrinsic viscosity aging degree is low), the experimental results of each group are shown in Table 3:

[0173] Table 3

[0174]

[0175] Based on the experimental results under the corresponding environment in Table 3, the variation curve of the intrinsic viscosity change Δ[η] over time is constructed as follows: Figure 5 As shown. Figure 5 and subsequent Figure 6 The horizontal axis represents time, and the vertical axis represents the change in intrinsic viscosity. Figure 5 The two curves correspond to the curves of brightness change over time under two different lighting environments shown in Table 3.

[0176] Combined with Table 3 and Figure 5 It can be seen that the influence of temperature on the lightness change trend of silk fabrics is not significant, the logarithmic coefficient b only changes slightly, and the effect of temperature on the reaction rate follows the Arrhenius formula. Therefore, within a certain temperature range, it can be considered that the temperature T and the logarithmic coefficient b are linearly related, thus fitting the equation shown in Formula 14:

[0177] b=9.667*10 -6 T+0.01127 (Formula 14);

[0178] Therefore, when the relative humidity is constant (60%), in an environment with a temperature of T, after any time t1 (unit: hours, h), the change in the intrinsic viscosity Δ[η] of a silk cultural relic with a low degree of aging can be expressed as the following formula 15:

[0179]

[0180] Among them, the relevant parameters can be found in the previous introduction and will not be repeated here.

[0181] 2.2. For silk fabrics with a high degree of aging

[0182] For silk fabrics pre-aged for 30 hours (at this time, the intrinsic viscosity aging degree is relatively high), the experimental results of each group are shown in Table 4:

[0183] Table 4

[0184]

[0185] Based on the experimental results under the corresponding environment in Table 4, the variation curve of the intrinsic viscosity change Δ[η] over time is constructed as follows: Figure 6 Show. Figure 6 The two curves correspond to the curves of brightness change over time under two different lighting environments shown in Table 4.

[0186] Combined with Table 4 and Figure 6 It can be seen that the influence of temperature on the lightness change trend of silk fabrics is not significant, the logarithmic coefficient b only changes slightly, and the effect of temperature on the reaction rate follows the Arrhenius formula. Therefore, within a certain temperature range, it can be considered that the temperature T and the logarithmic coefficient b are linearly related, thus fitting the equation shown in the following formula 16:

[0187] b=1.000*10 -5 *T+0.005000 (Formula 16);

[0188] Therefore, when the relative humidity is constant and the temperature is T, after any time t1 (unit: h), the change in the intrinsic viscosity of a silk artifact with a high degree of aging is:

[0189]

[0190] The relevant parameters are described above.

[0191] 2. Analysis of the prediction model for silk fabric degradation dominated by harmful gas corrosion factors

[0192] 1. Analyze the brightness change value ΔL * Model of change law

[0193] 1.1 Analysis of silk fabrics with low initial aging degree

[0194] For silk fabrics that were pre-aged for 5 hours, the experimental results of each group shown in Table 5 were obtained through experiments:

[0195] Table 5

[0196]

[0197] Table 5 shows the lightness change trends of silk fabrics under various experimental parameters. Figure 7 As shown by the curves in .

[0198] On this basis, we further analyzed the relationship between the concentration of mixed harmful gases (i.e. the multiple of the gas concentration relative to the collection standard concentration) c and the brightness change value ΔL of the silk fabric when the relative humidity of the environment is constant. * Relationship:

[0199] Through analysis, we can get Figure 8The relationship between the gas concentration multiple c and the logarithmic coefficient b is shown. Figure 8 The horizontal axis is the gas concentration multiple, and the vertical axis is the coefficient b. Figure 8 , fitting the equation shown in the following formula 18:

[0200] b = -3.853 + 0.6355 ln ( c + 458.4 ) (Formula 18);

[0201] Based on this, when the relative humidity is constant, in an environment with a mixed harmful gas concentration c, after any time t2 (unit: h) (that is, the cumulative exposure time to the harmful gas), the brightness change value of the silk cultural relic is:

[0202] ΔL*=[−3.853+0.6355ln(c+458.4)]ln(t2+1) (Formula 19);

[0203] Based on Table 5, the relationship between relative humidity RH and the lightness change value ΔL* of silk fabrics when the concentration of mixed harmful gases is constant is further analyzed:

[0204] The analysis shows that increasing the relative humidity of the environment slightly increases the brightness of silk fabrics. The relationship between the gas concentration multiple c and the logarithmic coefficient b is as follows:

[0205]

[0206] Therefore, when the concentration of mixed harmful gases is constant, in an environment with a relative humidity of RH, after any time t2 (unit: h), the brightness change value of a silk cultural relic with a low degree of aging can be expressed as Formula 21:

[0207]

[0208] Based on the introduction in Section 1.1, in an environment with a concentration of mixed harmful gases of c and a relative humidity of RH, after any time t2, the brightness change value of a silk fabric with a low degree of aging can be expressed as Formula 22:

[0209]

[0210] The relevant parameters in the above formula can be found in the relevant introduction in the previous experimental process and will not be repeated here.

[0211] 1.2 Analysis of Silk Fabrics with a High Degree of Aging

[0212] For silk fabrics pre-aged for 30 hours, the experimental results of each group shown in Table 6 were obtained through experiments:

[0213] Table 6

[0214]

[0215] Table 6 shows the lightness change trends of silk fabrics under various experimental parameters. Figure 9 As shown by the curves in . Figure 9 The horizontal axis is time, and the vertical axis is the brightness change.

[0216] Based on the above analysis, the concentration of mixed harmful gases c and the brightness change value ΔL of silk fabrics are analyzed when the relative humidity of the environment is constant. * Relationship:

[0217] After analysis, the relationship between the gas concentration multiple c and the logarithmic coefficient b can be obtained as follows: Figure 10 As shown. Figure 10 The horizontal axis is the gas concentration multiple, and the vertical axis is b. Finally, the equation shown in Formula 23 is fitted:

[0218] b = -12.78 + 1.732ln(c + 1670.6) (Formula 23);

[0219] Therefore, when the relative humidity is constant and the concentration of the mixed harmful gas is c, after any time t2 (unit: h), the brightness change value of the silk cultural relic can be expressed as Formula 24:

[0220] ΔL * =[-12.78+1.732ln(c+1670.6)]ln(t2+1) (Formula 24);

[0221] Furthermore, the relationship between relative humidity RH and the brightness change of silk fabrics is analyzed when the concentration of mixed harmful gases is constant:

[0222] The analysis shows that increasing the relative humidity slightly increases the brightness of silk fabrics. The relationship between the gas concentration multiple c and the logarithmic coefficient b is fitted as shown in Formula 25:

[0223]

[0224] Therefore, when the concentration of mixed harmful gases is constant, in an environment with a relative humidity of RH, after any time t2, the brightness change value of a silk cultural relic with a high degree of aging can be expressed as the following formula 26:

[0225]

[0226] Based on the introduction in Section 1.2, in an environment with a concentration of mixed harmful gases at a multiple of c and a relative humidity of RH, after any time t2, the brightness change value of a silk fabric with a high degree of aging can be expressed as Formula 27:

[0227]

[0228] 2. Analyze the relationship between the change in intrinsic viscosity and the concentration of mixed gas

[0229] 2.1 Analysis of silk fabrics with low aging degree

[0230] For silk fabrics that were pre-aged for 5 hours, the experimental results shown in Table 7 were obtained:

[0231] Table 7

[0232]

[0233] Table 7 shows the trend of the intrinsic viscosity of silk fabrics under various experimental parameters. Figure 11 As shown by the curves in . Figure 11 The horizontal axis is time, and the vertical axis is the change in intrinsic viscosity.

[0234] Based on this, firstly, the relationship between the concentration c of mixed harmful gases and the change in the intrinsic viscosity of silk fabrics is analyzed when the relative humidity of the environment is constant:

[0235] After analysis, the relationship between the gas concentration multiple c and the logarithmic coefficient b can be obtained as follows: Figure 12 As shown. Figure 12 The horizontal axis is the gas concentration multiple, and the vertical axis is the coefficient b. Figure 12 , we can fit the equation shown in the following formula 28:

[0236] b = -0.005520 + 0.002060 ( c + 19.31 ) (Formula 28);

[0237] Therefore, when the relative humidity is constant, in an environment with a mixed harmful gas concentration c, after any time t2, the change in the intrinsic viscosity of a silk cultural relic with a low degree of aging is:

[0238] Δ[η]=-[0.005520+0.002060 ln(c+19.31)]ln(t2+1) (Formula 29);

[0239] Secondly, the relationship between relative humidity RH and the change in intrinsic viscosity of silk fabrics is analyzed when the concentration of mixed harmful gases is constant:

[0240] After analysis, it was found that increasing the relative humidity of the environment slightly increases the intrinsic viscosity of silk fabrics. Based on this, the relationship between the gas concentration multiple c and the logarithmic coefficient b is fitted as shown in Formula 30:

[0241]

[0242] Therefore, when the concentration of the mixed harmful gas is constant (c=5000), in an environment with a relative humidity of RH, after any time t2, the change in the intrinsic viscosity of a silk cultural relic with a low degree of aging can be expressed as Formula 31:

[0243]

[0244] Based on the introduction in Section 2.1, in an environment with a mixed gas concentration multiple of c and a relative humidity of RH, after any time t2, the change in the intrinsic viscosity of a silk artifact with a low degree of aging can be expressed as Formula 32:

[0245]

[0246] 2.2 Analysis of Silk Fabrics with a High Degree of Aging

[0247] For silk fabrics pre-aged for 30 hours, the experimental results of each group shown in Table 8 were obtained through experiments:

[0248] Table 8

[0249]

[0250] Table 8 shows the trend of the intrinsic viscosity of silk fabrics under various experimental parameters. Figure 13 As shown by the curves in . Figure 13 The horizontal axis is time, and the vertical axis is the change in intrinsic viscosity.

[0251] First, based on the above experimental data, the relationship between the concentration multiple c of mixed harmful gases and the intrinsic viscosity of silk fabrics is analyzed when the relative humidity of the environment is constant.

[0252] After analysis, the relationship between the gas concentration multiple c and the logarithmic coefficient b is as follows: Figure 14 As shown. Combined Figure 14 , the following formula is obtained after fitting:

[0253] b=-0.001240+7.884*10 -4 *ln(c+4.989) (Formula 33);

[0254] Therefore, when the relative humidity is constant and the concentration of the mixed harmful gas is a multiple of c, after any time t2, the change in the intrinsic viscosity of the silk cultural relic with a high degree of aging can be expressed as the following formula 34:

[0255] Δ[η]=[-0.001240+7.884*10 -4 *ln(c+4.989)]ln(t2+1) (Formula 34);

[0256] Secondly, combined with the experimental data in Table 8, the relationship between relative humidity RH and the intrinsic viscosity Δ[η] of silk fabrics when the concentration of mixed harmful gases is constant is analyzed.

[0257] Analysis shows that increasing the relative humidity slightly increases the intrinsic viscosity of silk fabrics. Fitting reveals that the relationship between the gas concentration factor c and the logarithmic coefficient b is as follows:

[0258]

[0259] Therefore, when the concentration of mixed harmful gases is constant, in an environment with a relative humidity of RH, after any time t2 (unit: h), the change in the intrinsic viscosity of a silk cultural relic with a high degree of aging can be expressed as follows:

[0260]

[0261] Based on the introduction in Section 2.2, when the concentration of the mixed gas environment is c and the relative humidity is RH, after any time t2 (unit: h), the change in the intrinsic viscosity of a silk cultural relic with a high degree of aging can be expressed as follows:

[0262]

[0263] Combining the above arguments with the previous formula 11 and formula 22, we can get the brightness change of the silk cultural relic Δ L * The first brightness change function model related to the museum environment (as shown in Formula 2) can be obtained by combining Formula 13 and Formula 27 to obtain the second brightness change function model shown in Formula 3 above.

[0264] Accordingly, by combining Formula 15 and Formula 32, we can obtain the first characteristic viscosity change function model (shown in Formula 4) that relates the characteristic viscosity change of silk cultural relics to the museum environment. By combining Formula 17 and Formula 37, we can obtain the second characteristic viscosity change function model shown in Formula 5.

[0265] To understand the benefits of this solution, let's briefly explain it with a specific application:

[0266] In the part of the model affected by pollutants, according to the provisions of the national industry standard "Museum Building Design Standard" (JGJ66-2015), the concentration of SO2 and NO2 in the air of collection storage rooms and exhibition halls is limited to 0.05mg / m 3 and 0.08 mg / m 3 According to the data from museums in various places, the concentration of NO2 is generally 5-10 times higher than that of SO2, which is consistent with the concentration of NO2 (or NO X) concentration is higher than the SO2 concentration (for example, in 2022, the annual average concentrations of SO2 and NO2 in Beijing’s atmospheric environment were 3 μg / m 3 , 23 μg / m 3 ), and according to the mechanism, NO2 is more destructive to silk fabrics than SO2. Therefore, unless the SO2 concentration in a museum collection environment is abnormally high, such as SO2 concentration is more than 5 times that of NO2, the c in the model can be simply used. Processing, otherwise use to be processed.

[0267] Regarding the lighting impact part of the model, according to the "Museum Lighting Design Code" (GB / T 23863-2009), silk fabrics (silk embroidery) are exhibits that are particularly sensitive to light. The standard illumination value is not higher than 50lx, and the annual exposure limit is 50,000lx*h. Specific calculations can be made by each museum based on actual exhibition conditions.

[0268] The following example illustrates this: for example, a well-preserved silk cultural relic, its L M * =70, [η] M =0.21, its original health can be calculated If the display illumination is 15 lx, the display cabinet temperature is 20°C, the humidity is 65%, and the pollutant gas concentration is c = 2, and the change in the health of the cultural relic after two years t1 = 6000 h (i.e., the exhibition time is 6000 h, which is the cumulative exposure time mentioned above, and the same applies to the subsequent), and t2 = 17520 h (the actual time of two years, i.e., the time the silk cultural relic has been in the display cabinet, which is the cumulative exposure time of the silk cultural relic to the temperature, and the same applies to the subsequent), then the brightness change of the silk cultural relic should be substituted into the model to calculate the following:

[0269]

[0270] The brightness change due to sunlight can be calculated using the first half of the above equation, which is 2.7622. The brightness change due to pollutants can be calculated using the second half, which is 0.6213. This shows that the impact of lighting on exhibitions is greater than that of pollutants. However, based on the expressions in the equations, unless the pollutant concentration c exceeds the standard, its impact is minimal.

[0271] Under this condition, the viscosity of the silk cultural relics is substituted into the model and calculated as follows:

[0272]

[0273] The portion of the intrinsic viscosity change due to light, calculated using the first half of the above equation, is -0.007358. The portion of the intrinsic viscosity change due to pollutants, calculated using the second half of the above equation, is -0.007679. This shows that light and pollutants have almost identical effects on the intrinsic viscosity of silk fabrics, and the intrinsic viscosity is more sensitive to changes in pollutant concentration.

[0274] Health level at this time

[0275] Correspondingly, the change in health level ΔH = -0.0647, and it can be found that the health level has decreased significantly.

[0276] However, if, in order to protect the silk fabrics, the exhibition time within these two years is reduced to half of the original time, that is, 3000 hours, the light intensity is also reduced to 10lx, the pollutant gas concentration is controlled at c = 0.5, and other conditions remain unchanged, the calculation is re-calculated as follows:

[0277]

[0278] Among them, the brightness change caused by light can be obtained using the first half of the above formula, and the brightness change value of this part is 1.1291; the brightness change caused by polluted gas can be obtained using the second half of the above formula, and the brightness change value of this part is 0.4199.

[0279]

[0280] Among them, the change in intrinsic viscosity caused by light can be calculated using the first half of the above formula, and the change in intrinsic viscosity of this part is -0.003008; the change in intrinsic viscosity caused by polluted gas can be calculated using the second half of the above formula, and the change in intrinsic viscosity of this part is -0.005844.

[0281] Health level at this time

[0282] ΔH=-0.0329, the rate of decline in the health of silk fabrics slowed down significantly.

[0283] As the collection time increases, the brightness of the silk artifacts will gradually increase, which is reflected in the g(t) value in the model changing from At the same time, the intrinsic viscosity [η] of silk artifacts gradually decreases, which is reflected in the h(t) value in the model from If no measures are taken to protect the silk cultural relics, the health level H value will gradually decrease.

[0284] As for the cultural relics samples in poor preservation conditions, take two ancient silk cultural relics fragments from a Han tomb in a certain city A as an example. Figure 15 As shown, the two silk textile artifacts are called Sample No. 1 and Sample No. 2 respectively.

[0285] Samples 1 and 2 both date to the Han Dynasty. Sample 1 is complete, has a light yellow surface, and good mechanical properties. Sample 2 is significantly damaged, has a dark brown to black surface, sparse warp and weft lines, and is prone to flocculence and brittleness.

[0286] Through measurement, the initial lightness of sample No. 1 is 46.98, the initial intrinsic viscosity is 0.145, while the initial lightness of sample No. 2 is 37.74, the initial specific viscosity is 0.116. The initial health level H1 of sample No. 1 and the initial health level H2 of sample No. 2 can be calculated:

[0287]

[0288]

[0289] If the same conditions are used, such as the illumination of 15 lx, the temperature of the display cabinet of 20 ° C, the humidity of 65%, and the concentration of pollutants c = 2, and the time t1 = 6000 h (i.e., the exhibition time is 6000 h) and t2 = 17520 h (i.e., the time the silk cultural relics are in the display cabinet during the two years), the changes are as follows:

[0290] First is sample number 1:

[0291]

[0292] Among them, the brightness change caused by light can be obtained using the first half of the above formula, and the brightness change value of this part is 1.7361; the brightness change caused by pollutant gas can be obtained using the second half of the above formula, and the brightness change value of this part is 0.7405.

[0293]

[0294] The change in intrinsic viscosity caused by light can be calculated using the first half of the above formula, which is -0.008000. The change in intrinsic viscosity caused by polluted gas can be calculated using the second half of the above formula, which is -0.007680.

[0295] At this time, using the previous health calculation formula, the health level of sample No. 1 can be calculated as follows:

[0296]

[0297] Combined with the initial health level of sample No. 1, the change in health level of sample No. 1 is -0.0373.

[0298] Then comes sample number 2:

[0299] Its ΔL * Same as sample No. 1.

[0300]

[0301] Among them, the change in intrinsic viscosity caused by light can be calculated using the first half of the above formula, and the change in intrinsic viscosity of this part is -0.001370; the change in intrinsic viscosity caused by polluted gas can be calculated using the second half of the above formula, and the change in intrinsic viscosity of this part is -0.001007.

[0302] At this point, combined with the health degree calculation formula, the health degree of sample No. 2 can be expressed as follows:

[0303]

[0304] Correspondingly, the change in health level of sample 2 is -0.0165

[0305] Generally speaking, the textile industry believes that color difference ΔE>2 can be distinguished by the naked eye, and silk fabrics are generally dyed into insensitive colors, such as yellow and red, and are easy to distinguish when ΔE>4. Here, we will not consider the influence of redness and yellowness on color difference, and define ΔL * >4 is the warning value for silk fabrics to be removed from the exhibition. In addition, Δ[η]<-0.05 is defined as the warning value for removal of silk fabrics. If the silk fabrics reach this state, they should be removed from the exhibition immediately for protection (or their lifespan should be fully considered and the exhibition conditions should be improved to extend their lifespan). If the exhibition illumination is 15lx, the display cabinet temperature is 20℃, the humidity is 65%, and the pollutant gas concentration is c=2, where the exhibition time is t1(h) and the display cabinet time (i.e., the total time) is t2(h), then for sample No. 1, when it reaches the warning state for removal of the exhibition, by substituting the above relevant formula, the ΔL value of sample No. 1 can be calculated. * =4, Δ[η]=-0.05, specifically as follows:

[0306]

[0307]

[0308] Simplifying, we can get the following formula 38 and formula 39:

[0309]

[0310]

[0311] Considering that the silk fabric is in poor condition, if its exhibition time t1 is 20% of the total time t2, that is, t1 = 0.2t2, substituting the simplified formula 38 and formula 39 into the calculation, we can get:

[0312] In formula 38, t2≈74000h (8.45 years) (exponential function, just squeeze to get the approximate value), and in formula 39, t2≈980000h (111.87 years).

[0313] It can be seen that under this condition, the change in brightness of the silk fabric is more obvious than the change in relative viscosity. The light intensity and other conditions need to be strictly controlled during the exhibition. Otherwise, after 8-9 years, the brightness value (and obviously the color difference value) of the cultural relic will change visibly to the naked eye, affecting both the appearance and the life of the cultural relic.

[0314] Among them, museums can carry out monitoring and protection work according to the actual situation of the museum and silk textile cultural relics. For example, for silk textile cultural relics that were in good condition when they were collected (such as their L M * >65 or [η] M >0.1), such cultural relics may be on display for a long time. By testing the condition of the cultural relics when they were collected (if no test was conducted when they were collected, such as the silk cultural relics were collected 20 years ago, the first test time, such as some time in 2023, can be selected as the benchmark point) and substituting it into this model, we can know how much time has passed (the deterioration cycle of cultural relics is long, and it may take 10 years or even decades for obvious changes to occur) and how much the health of the cultural relics has changed, so that we can calmly carry out continuous monitoring and carry out corresponding protection work. A brief introduction to the testing method:

[0315] Lightness L in the model M * A colorimeter is recommended for direct testing. Typically, due to the large size of silk artifacts, multiple points (at least five) must be tested and the average value calculated. Each point must be tested five times to obtain the average value. This test is non-destructive to silk artifacts.

[0316] Intrinsic viscosity [η] in the model M It is advisable to use a 0.45mm inner diameter Ubbelohde viscometer to perform the test using the dilution method. This test may slightly damage silk cultural relics. A small amount of fallen fragments or silk threads can be used for testing. The details are as follows:

[0317] Prepare 9.3 mol / L lithium bromide solution, take a small amount of silk cultural relic sample and dissolve it in 8 ml of this solution to obtain solution A. Adjust the water bath to maintain the test environment at 20 ° C. First, measure the outflow time T0 of the pure solvent, then measure the outflow time T1 of solution A. Then, add 4 ml, 4 ml, and 8 ml of lithium bromide solution respectively for dilution, and measure the outflow time of each time as T. 2 / 3 , T 1 / 2 With T 1 / 3 , the intrinsic viscosity [η] is obtained by inverse calculation using Huggins empirical formula and Kraemer formula M Before each test, the system must be left to stand for 10 minutes to keep the system temperature constant. Each test is performed 3 times and the average is taken. The maximum error should be within 0.2s.

[0318] Corresponding to the method for determining the health level of silk cultural relics in the present application, the present application also provides a device for determining the health level of silk cultural relics.

[0319] like Figure 16 , which shows a schematic diagram of the composition structure of a device for determining the health status of silk cultural relics provided in an embodiment of the present application. The device of this embodiment may include:

[0320] An initial value obtaining unit 1601 is used to obtain the initial lightness and initial intrinsic viscosity of the silk cultural relic when it is preserved in a museum;

[0321] The time determination unit 1602 is configured to determine the cumulative illumination time and cumulative exposure time of the silk cultural relic to the harmful gas environment within a target evaluation time period, wherein the target evaluation time period is the period from the time the silk cultural relic is stored and entered into the museum to a target prediction time, wherein the target prediction time is the time at which the health status of the silk cultural relic needs to be predicted;

[0322] A parameter obtaining unit 1603 is configured to obtain parameter values of a plurality of environmental parameters in the museum that affect the brightness change and the intrinsic viscosity change of the silk cultural relic;

[0323] a brightness determination unit 1604 configured to determine, based on the cumulative illumination time, the cumulative exposure time, and the parameter values of the multiple environmental parameters, a brightness change function model for determining a brightness change of the silk cultural relic from the time of entry to the target predicted time, wherein the brightness change function model is a function model fitted based on the relationship between the brightness change of the silk cultural relic in the experimental environment and the illumination time, the exposure time to the harmful gas environment, and the experimental values of the multiple environmental parameters;

[0324] The viscosity determination unit 1605 is configured to determine the change in the intrinsic viscosity of the silk cultural relic from the time of entry to the target predicted time based on the cumulative illumination time, the cumulative exposure time, and the parameter values of the multiple environmental parameters using an intrinsic viscosity change function model, wherein the intrinsic viscosity change function model is a function model fitted based on the relationship between the change in the intrinsic viscosity of the silk cultural relic in the experimental environment and the illumination time, the exposure time to the harmful gas environment, and the experimental values of the multiple environmental parameters;

[0325] The health determination unit 1606 is configured to determine the health of the silk textile artifact at the target prediction time based on the initial lightness, the initial intrinsic viscosity, the lightness change, and the intrinsic viscosity change.

[0326] In a possible implementation, the device further includes:

[0327] a reference obtaining unit, configured to obtain a preset reference lightness and a reference intrinsic viscosity applicable to the silk cultural relic before the health determining unit determines the health of the silk cultural relic at the target prediction time;

[0328] The health determination unit includes:

[0329] The health determination subunit is used to determine the health of the silk cultural relic at the target prediction time based on the reference brightness, reference intrinsic viscosity, initial brightness, initial intrinsic viscosity, brightness change and intrinsic viscosity change.

[0330] In an optional manner, the health determination unit specifically determines the health of the silk cultural relic at the target prediction time based on the reference lightness, reference intrinsic viscosity, initial lightness, initial intrinsic viscosity, lightness change, and intrinsic viscosity change using a silk health evaluation model;

[0331] The silk fabric health evaluation model is as follows:

[0332]

[0333] Among them, H is the health level of silk cultural relics;

[0334] L0 * is the reference brightness; L M * is the initial brightness; ΔL * is the brightness change; [η]0 is the base intrinsic viscosity; [η] M is the initial intrinsic viscosity; Δ[η] is the change in intrinsic viscosity.

[0335] In yet another possible implementation, the apparatus further includes:

[0336] a first category determination unit configured to determine, before the brightness determination unit determines the brightness change of the silk cultural relic from the time of entry to the target prediction time, a brightness aging category to which the silk cultural relic belongs at the time of entry, the brightness aging category being one of low brightness aging and high brightness aging;

[0337] The brightness determination unit includes:

[0338] a first brightness determination unit configured to determine, if the brightness aging category of the silk cultural relic belongs to low brightness aging, a brightness change amount of the silk cultural relic from the time of entry to the target prediction time using a first brightness change function model based on the cumulative illumination time, the cumulative exposure time, and the parameter values of the multiple environmental parameters, wherein the first brightness change function model is a function model fitted based on the relationship between the brightness change of the first type of silk fabric in an experimental environment and the illumination time, the exposure time to the harmful gas environment, and the experimental values of the multiple environmental parameters; the brightness aging category of the first type of silk fabric belongs to low brightness aging;

[0339] A second brightness determination unit is configured to determine, if the brightness aging category of the silk cultural relic belongs to high brightness aging, the brightness change of the silk cultural relic from the time of entry to the target prediction time using a second brightness change function model based on the cumulative illumination time, the cumulative exposure time and the parameter values of the multiple environmental parameters; the second brightness change function model is a function model fitted based on the relationship between the brightness change of the second type of silk fabric in the experimental environment and the illumination time, the exposure time to the harmful gas environment and the experimental values of the multiple environmental parameters, wherein the brightness aging category of the second type of silk fabric is high brightness aging.

[0340] In yet another possible implementation, the apparatus further includes:

[0341] a second category determination unit for determining, before determining the change in intrinsic viscosity of the silk cultural relic from the time of entry to the target prediction time, an intrinsic viscosity aging category to which the silk cultural relic belongs at the time of entry, the intrinsic viscosity aging category being one of low intrinsic viscosity aging and high intrinsic viscosity aging;

[0342] The intrinsic viscosity determination unit comprises:

[0343] a first intrinsic viscosity determination unit configured to determine, if the intrinsic viscosity aging category of the silk cultural relic is low intrinsic viscosity aging, a change in the intrinsic viscosity of the silk cultural relic from the time of entry to the museum to the target predicted time using a first intrinsic viscosity change function model based on the cumulative illumination time, the cumulative exposure time, and the parameter values of multiple environmental parameters; wherein the first intrinsic viscosity change function model is a function model fitted based on the relationship between the intrinsic viscosity change of a third type of silk fabric in an experimental environment and the illumination time, the exposure time to a harmful gas environment, and the experimental values of the multiple environmental parameters; the intrinsic viscosity aging category of the third type of silk fabric is low intrinsic viscosity aging;

[0344] The second characteristic viscosity determination unit is used to determine, if the characteristic viscosity aging category of the silk cultural relic is high degree of characteristic viscosity aging, based on the cumulative illumination time, the cumulative exposure time and the parameter values of multiple environmental parameters, using a second characteristic viscosity change function model to determine the change in the characteristic viscosity of the silk cultural relic from the time of entry into the museum to the target prediction time; the second characteristic viscosity change function model is a function model fitted based on the relationship between the characteristic viscosity change of the fourth type of silk fabric in the experimental environment and the illumination time, the exposure time in the harmful gas environment and the experimental values of the multiple environmental parameters; the characteristic viscosity aging category of the fourth type of silk fabric is high degree of characteristic viscosity aging.

[0345] It should be noted that the various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other. At the same time, the features described in the various embodiments in this specification can be replaced or combined with each other, so that professionals in this field can implement or use this application. For device embodiments, since they are basically similar to method embodiments, the description is relatively simple, and the relevant parts can be referred to the partial description of the method embodiment.

[0346] Finally, it should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such process, method, article, or device. In the absence of further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of additional identical elements in the process, method, article, or device comprising the element.

[0347] The above description of the disclosed embodiments will enable one skilled in the art to implement or use the present application. Various modifications to these embodiments will be readily apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application is not limited to the embodiments shown herein, but is intended to conform to the widest scope consistent with the principles and novel features disclosed herein.

[0348] The above is only a preferred embodiment of the present application. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present application. These improvements and modifications should also be regarded as the scope of protection of the present application.

Claims

1. A method for determining the health of silk cultural relics, characterized in that: include: Obtain the initial lightness and initial intrinsic viscosity of silk cultural relics when they are preserved in museums; Determining the cumulative illumination time and cumulative exposure time of the silk cultural relic to the harmful gas environment within a target evaluation time period, wherein the target evaluation time period is the period from the time the silk cultural relic is stored and entered into the museum to a target prediction time, wherein the target prediction time is the time at which the health status of the silk cultural relic needs to be predicted; Obtaining parameter values of a plurality of environmental parameters in the museum that affect the brightness change and the intrinsic viscosity change of the silk cultural relic; Determining, based on the cumulative illumination time, the cumulative exposure time, and the parameter values of the multiple environmental parameters, a brightness change function model of the silk cultural relic from the time of entry to the target predicted time, wherein the brightness change function model is a function model fitted based on the relationship between the brightness change of the silk cultural relic in the experimental environment and the illumination time, the exposure time to the harmful gas environment, and the experimental values of the multiple environmental parameters; Determining, based on the cumulative illumination time, the cumulative exposure time, and the values of multiple environmental parameters, a change in the intrinsic viscosity of the silk cultural relic from the time of entry to the target predicted time using an intrinsic viscosity change function model, wherein the intrinsic viscosity change function model is a function model fitted based on the relationship between the change in the intrinsic viscosity of the silk cultural relic in the experimental environment and the illumination time, the exposure time to the harmful gas environment, and the experimental values of the multiple environmental parameters; The health of the silk cultural relic at the target prediction moment is determined based on the initial lightness, the initial intrinsic viscosity, the lightness change and the intrinsic viscosity change.

2. The method according to claim 1, characterized in that Before determining the health status of the silk cultural relic at the target prediction time, the method further includes: Obtaining a preset reference lightness and a reference intrinsic viscosity applicable to the silk cultural relic; The determining of the health of the silk cultural relic at the target prediction time based on the initial lightness, the initial intrinsic viscosity, the lightness change, and the intrinsic viscosity change includes: The health of the silk cultural relic at the target prediction moment is determined based on the reference brightness, reference intrinsic viscosity, initial brightness, initial intrinsic viscosity, brightness change and intrinsic viscosity change.

3. The method according to claim 2, characterized in that Determining the health of the silk cultural relic at the target prediction time based on the reference lightness, reference intrinsic viscosity, initial lightness, initial intrinsic viscosity, lightness change, and intrinsic viscosity change includes: Determining the health of the silk cultural relic at the target prediction time using a silk health assessment model based on the reference lightness, reference intrinsic viscosity, initial lightness, initial intrinsic viscosity, lightness change, and intrinsic viscosity change; The silk fabric health evaluation model is as follows: Among them, H is the health level of silk cultural relics; L0 * is the reference brightness; L M * is the initial brightness; ΔL * is the brightness change; [η]0 is the base intrinsic viscosity; [η] M is the initial intrinsic viscosity; Δ[η] is the change in intrinsic viscosity.

4. The method according to claim 1, wherein Before determining the brightness change of the silk cultural relic from the time of entering the museum to the target predicted time, the method further includes: Determining the lightness aging category of the silk textile cultural relic at the time of entry into the museum, wherein the lightness aging category is one of two categories: low lightness aging and high lightness aging; Determining the brightness change of the silk cultural relic from the time of entry to the target prediction time using a brightness change function model based on the cumulative illumination time, the cumulative exposure time, and the parameter values of the multiple environmental parameters includes: If the brightness aging category of the silk cultural relic belongs to low brightness aging, determining a brightness change of the silk cultural relic from the time of entry to the target prediction time using a first brightness change function model based on the cumulative illumination time, the cumulative exposure time, and the parameter values of the plurality of environmental parameters; If the brightness aging category of the silk cultural relic belongs to high brightness aging, determining the brightness change of the silk cultural relic from the time of entry to the target prediction time using a second brightness change function model based on the cumulative illumination time, the cumulative exposure time, and the parameter values of the multiple environmental parameters; The first brightness change function model is a function model fitted based on the relationship between the brightness change of the first type of silk fabric in the experimental environment and the illumination time, the exposure time to the harmful gas environment, and the experimental values of the multiple environmental parameters; The second brightness change function model is a function model fitted based on the relationship between the brightness change of the second type of silk fabric in the experimental environment and the illumination time, the exposure time to the harmful gas environment, and the experimental values of the multiple environmental parameters; The lightness aging category of the first type of silk fabric is low lightness aging, and the lightness aging category of the second type of silk fabric is high lightness aging.

5. The method according to claim 4, characterized in that The multiple environmental parameters include: the storage temperature of the silk cultural relics in the museum, the relative humidity of the silk cultural relics in the museum, the light intensity of the silk cultural relics, and the relative concentration of harmful gases in the museum relative to the set collection standard concentration; The first brightness transformation function model is as follows: The second brightness change function model is as follows: Where, ΔL * is the brightness change; T is the storage temperature of the silk cultural relic in the museum; E is the light intensity of the silk cultural relic; RH is the relative humidity of the silk cultural relic in the museum; c is the relative concentration of harmful gases in the museum; t1 is the cumulative illumination time of the silk textile cultural relic, and t2 is the cumulative exposure time of the silk textile cultural relic.

6. The method according to claim 1, characterized in that Before determining the change in the intrinsic viscosity of the silk cultural relic from the time of entry to the target prediction time, the method further includes: Determining the intrinsic viscosity aging category of the silk cultural relic at the time of entry into the museum, wherein the intrinsic viscosity aging category is one of low intrinsic viscosity aging and high intrinsic viscosity aging; The method of determining the change in the intrinsic viscosity of the silk cultural relic from the time of entry to the target prediction time using an intrinsic viscosity change function model based on the cumulative illumination time, the cumulative exposure time, and the parameter values of the plurality of environmental parameters includes: If the intrinsic viscosity aging category of the silk cultural relic is low intrinsic viscosity aging, determining a change in the intrinsic viscosity of the silk cultural relic from the time of entry to the target prediction time using a first intrinsic viscosity change function model based on the cumulative illumination time, the cumulative exposure time, and the parameter values of the plurality of environmental parameters; If the intrinsic viscosity aging category of the silk cultural relic is high intrinsic viscosity aging, determining a change in the intrinsic viscosity of the silk cultural relic from the time of entry to the target prediction time using a second intrinsic viscosity change function model based on the cumulative illumination time, the cumulative exposure time, and the values of the plurality of environmental parameters; The first intrinsic viscosity change function model is a function model fitted based on the relationship between the intrinsic viscosity change of the third type of silk fabric in the experimental environment and the light exposure time, the exposure time to the harmful gas environment, and the experimental values of the multiple environmental parameters; The second intrinsic viscosity change function model is a function model fitted based on the relationship between the intrinsic viscosity change of the fourth type of silk fabric in the experimental environment and the light exposure time, the exposure time to the harmful gas environment and the experimental values of the multiple environmental parameters; The intrinsic viscosity aging category of the third type of silk fabric belongs to low intrinsic viscosity aging, and the intrinsic viscosity aging category of the fourth type of silk fabric belongs to high intrinsic viscosity aging.

7. The method according to claim 6, characterized in that The multiple environmental parameters include: the storage temperature of the silk cultural relics in the museum, the relative humidity of the silk cultural relics in the museum, the light intensity of the silk cultural relics, and the relative concentration of harmful gases in the museum relative to the set collection standard concentration; The first intrinsic viscosity variation function model is as follows: The second intrinsic viscosity variation function model is as follows: Where Δη is the change in intrinsic viscosity; T is the storage temperature of the silk cultural relic in the museum; E is the light intensity of the silk cultural relic; RH is the relative humidity of the silk cultural relic in the museum; c is the relative concentration of harmful gases in the museum; t1 is the cumulative illumination time of the silk textile cultural relic, and t2 is the cumulative exposure time of the silk textile cultural relic.

8. A device for determining the health of silk cultural relics, characterized in that: include: An initial value obtaining unit, used to obtain the initial lightness and initial intrinsic viscosity of the silk cultural relic when it is preserved in a museum; a time determination unit, configured to determine the cumulative illumination time and cumulative exposure time of the silk cultural relic to the harmful gas environment within a target evaluation time period, wherein the target evaluation time period is the period from the time the silk cultural relic is stored and entered into the museum to a target prediction time, wherein the target prediction time is the time at which the health status of the silk cultural relic needs to be predicted; a parameter obtaining unit, configured to obtain parameter values of a plurality of environmental parameters in the museum that affect changes in brightness and intrinsic viscosity of the silk cultural relic; a brightness determination unit, configured to determine, based on the cumulative illumination time, the cumulative exposure time, and the parameter values of the plurality of environmental parameters, a brightness change function model for determining a brightness change of the silk cultural relic from the time of entry to the museum to the target predicted time, wherein the brightness change function model is a function model fitted based on the relationship between the brightness change of the silk cultural relic in the experimental environment and the illumination time, the exposure time to the harmful gas environment, and the experimental values of the plurality of environmental parameters; a viscosity determination unit, configured to determine, based on the cumulative illumination time, the cumulative exposure time, and the parameter values of the plurality of environmental parameters, a change in the intrinsic viscosity of the silk cultural relic from the time of entry to the museum to the target predicted time using an intrinsic viscosity change function model, wherein the intrinsic viscosity change function model is a function model fitted based on the relationship between the change in the intrinsic viscosity of the silk cultural relic in the experimental environment and the illumination time, the exposure time to the harmful gas environment, and the experimental values of the plurality of environmental parameters; The health determination unit is used to determine the health of the silk cultural relic at the target prediction time based on the initial lightness, the initial intrinsic viscosity, the lightness change and the intrinsic viscosity change.

9. The device according to claim 8, characterized in that Also includes: a reference obtaining unit, configured to obtain a preset reference lightness and a reference intrinsic viscosity applicable to the silk cultural relic before the health determining unit determines the health of the silk cultural relic at the target prediction time; The health determination unit includes: The health determination subunit is used to determine the health of the silk cultural relic at the target prediction time based on the reference brightness, reference intrinsic viscosity, initial brightness, initial intrinsic viscosity, brightness change and intrinsic viscosity change.

10. The device according to claim 8, characterized in that Also includes: a first category determination unit configured to determine, before the brightness determination unit determines the brightness change of the silk cultural relic from the time of entry to the target prediction time, a brightness aging category to which the silk cultural relic belongs at the time of entry, the brightness aging category being one of low brightness aging and high brightness aging; The brightness determination unit includes: a first brightness determination unit configured to determine, if the brightness aging category of the silk cultural relic belongs to low brightness aging, a brightness change amount of the silk cultural relic from the time of entry to the target prediction time using a first brightness change function model based on the cumulative illumination time, the cumulative exposure time, and the parameter values of the multiple environmental parameters, wherein the first brightness change function model is a function model fitted based on the relationship between the brightness change of the first type of silk fabric in an experimental environment and the illumination time, the exposure time to the harmful gas environment, and the experimental values of the multiple environmental parameters; the brightness aging category of the first type of silk fabric belongs to low brightness aging; A second brightness determination unit is configured to determine, if the brightness aging category of the silk cultural relic belongs to high brightness aging, the brightness change of the silk cultural relic from the time of entry to the target prediction time using a second brightness change function model based on the cumulative illumination time, the cumulative exposure time and the parameter values of the multiple environmental parameters; the second brightness change function model is a function model fitted based on the relationship between the brightness change of the second type of silk fabric in the experimental environment and the illumination time, the exposure time to the harmful gas environment and the experimental values of the multiple environmental parameters, wherein the brightness aging category of the second type of silk fabric is high brightness aging.

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