A method for monitoring the withering process of white tea based on relevant marker physicochemical parameters

Abstract

The present invention relates to a white tea withering process monitoring method based on relevant marker physical and chemical parameters, and relates to the field of data processing technology. The method comprises: before performing compound withering, detecting the spreading thickness of the white tea during compound withering, and generating first thickness adjustment information; during the compound withering process, acquiring compound withering information at multiple historical compound withering time points, and adjusting the compound withering parameters during the compound withering process; before performing hot-air withering, detecting the spreading thickness of the white tea during hot-air withering, and generating second thickness adjustment information; during the hot-air withering process, acquiring hot-air withering information at multiple historical hot-air withering time points, and adjusting the hot-air withering parameters during the hot-air withering process based on the hot-air withering information at multiple historical hot-air withering time points. The method has the advantages of completing automatic monitoring of the white tea withering process, making the white tea withering more standardized based on the relevant marker physical and chemical parameters, and improving the withering quality of the white tea.

Description

Technical Field

[0001] The present invention relates to the technical field of data processing, and in particular to a method for monitoring the withering process of white tea based on relevant marker physical and chemical parameters. Background Art

[0002] White tea, one of China's six major tea varieties, is a specialty of Fujian Province, primarily produced in Fuding, Zhenghe, Songxi, and Jianyang. White tea is characterized by intact, fully hairy buds, a fresh, fragrant aroma, a clear, yellow-green liquor, and a light, sweet, and lingering flavor. It is a lightly fermented tea and a special treasure among Chinese teas. It gets its name from the fact that the finished tea, often featuring buds covered in white hairs, resembles silver and snow.

[0003] White tea processing consists of only two steps: withering and roasting. While the raw materials are fundamental to white tea's quality, withering is crucial. The withering process involves both physical and chemical changes, namely physical withering and chemical withering. Chemical withering lags behind physical withering, occurring concurrently with physical withering after the physical withering process has completed its transformation. Chemical withering is central to the development of white tea's quality characteristics. Chemical withering is achieved under specific temperature, relative humidity, and airflow conditions, controlled by the rate of water loss. This rate of water loss determines the degree of chemical withering and the resulting quality of the white tea.

[0004] At present, the monitoring of tea withering process is mostly done manually, which not only has low processing efficiency but also makes it difficult to ensure the quality of tea, and can no longer meet the needs of the development of the tea industry.

[0005] Therefore, it is necessary to provide a white tea withering process monitoring method based on relevant marker physical and chemical parameters, which is used to complete the automated monitoring of the white tea withering process. Based on the relevant marker physical and chemical parameters, the white tea withering is made more standardized and the withering quality of the white tea is improved. Summary of the Invention

[0006] One of the embodiments of the present specification provides a method for monitoring the withering process of white tea based on relevant marker physical and chemical parameters, including: before performing double withering, detecting the spreading thickness of the white tea after double withering, and generating first thickness adjustment information based on the spreading thickness of the white tea after double withering; during the double withering process, obtaining the double withering information at multiple historical double withering time points, and adjusting the double withering parameters in the double withering process based on the double withering information at multiple historical double withering time points; before performing hot air withering, detecting the spreading thickness of the white tea after hot air withering, and generating second thickness adjustment information based on the spreading thickness of the white tea after hot air withering; during the hot air withering process, obtaining the hot air withering information at multiple historical hot air withering time points, and adjusting the hot air withering parameters in the hot air withering process based on the hot air withering information at multiple historical hot air withering time points.

[0007] Furthermore, before performing the double withering, the double withering spreading thickness of the white tea is detected, and the first thickness adjustment information is generated based on the double withering spreading thickness of the white tea, including: after spreading the white tea on the double withering screen, obtaining the point cloud information of the white tea on the double withering screen; based on the point cloud information of the white tea on the double withering screen, determining the double withering spreading thickness of the white tea; when the double withering spreading thickness of the white tea does not meet the preset double withering spreading thickness condition, generating the first thickness adjustment information based on the double withering spreading thickness of the white tea.

[0008] Furthermore, before performing the double withering, the double withering spreading thickness of the white tea is detected, and the first thickness adjustment information is generated based on the double withering spreading thickness of the white tea, which also includes: when the double withering spreading thickness of the white tea meets the preset double withering spreading thickness condition, based on the point cloud information of the white tea on the double withering screen, determining the spreading uniformity of the white tea on the double withering screen; when the spreading uniformity of the white tea on the double withering screen does not meet the preset spreading uniformity requirement, the first thickness adjustment information is generated based on the spreading uniformity of the white tea on the double withering screen.

[0009] Furthermore, the compound withering process includes a natural withering stage and a light withering stage; during the compound withering process, compound withering information at multiple historical compound withering time points is obtained, and based on the compound withering information at multiple historical compound withering time points, the compound withering parameters in the compound withering process are adjusted, including: in the natural withering stage, the ambient temperature, ambient wind speed, ambient relative humidity and water loss rate at multiple historical natural withering time points are obtained; based on the ambient temperature, ambient wind speed, ambient relative humidity and water loss rate at multiple historical natural withering time points, it is determined whether the ambient temperature, ambient relative humidity and ambient wind speed need to be adjusted.

[0010] Furthermore, during the compound withering process, compound withering information at multiple historical compound withering time points is obtained, and based on the compound withering information at multiple historical compound withering time points, the compound withering parameters in the compound withering process are adjusted, including: in the light withering stage, the light intensity, ambient temperature, ambient wind speed, ambient relative humidity and water loss rate at multiple historical light withering time points are obtained; based on the light intensity, ambient temperature, ambient wind speed, ambient relative humidity and water loss rate at multiple historical light withering time points, it is determined whether the light intensity, ambient temperature, ambient relative humidity and ambient wind speed need to be adjusted.

[0011] Furthermore, before hot air withering, the hot air withering thickness of the white tea is detected, and second thickness adjustment information is generated based on the hot air withering thickness of the white tea, including: after spreading the white tea on the hot air withering screen, the point cloud information of the white tea on the hot air withering screen is obtained; based on the point cloud information of the white tea on the hot air withering screen, the hot air withering thickness of the white tea is determined; when the hot air withering thickness of the white tea does not meet the preset hot air withering thickness condition, the second thickness adjustment information is generated based on the hot air withering thickness of the white tea.

[0012] Furthermore, the hot air withering process includes a first hot air withering stage, a second hot air withering stage and a third hot air withering stage; during the hot air withering process, hot air withering information at multiple historical hot air withering time points is obtained, and based on the compound withering information at multiple historical hot air withering time points, the hot air withering parameters in the hot air withering process are adjusted, including: in the first hot air withering stage, withering temperatures, withering wind speeds, withering relative humidity and withering water loss rates at multiple locations inside the hot air withering equipment at multiple historical first hot air withering time points are obtained, and based on the withering temperatures, withering wind speeds, withering relative humidity and withering water loss rates at multiple locations inside the hot air withering equipment at multiple historical first hot air withering time points, it is determined whether the working parameters of the hot air withering equipment in the first hot air withering stage are adjusted; in the second hot air withering stage, withering temperatures, withering wind speeds, withering relative humidity and withering water loss rates at multiple locations inside the hot air withering equipment at multiple historical first hot air withering time points are obtained. The withering temperatures, withering wind speeds, withering relative humidity and withering water loss rates at multiple locations inside the hot air withering equipment at multiple historical second hot air withering time points are obtained. Based on the withering temperatures, withering wind speeds, withering relative humidity and withering water loss rates at multiple locations inside the hot air withering equipment at multiple historical second hot air withering time points, it is judged whether to adjust the working parameters of the hot air withering equipment in the second hot air withering stage; in the third hot air withering stage, the withering temperatures, withering wind speeds, withering relative humidity and withering water loss rates at multiple locations inside the hot air withering equipment at multiple historical third hot air withering time points are obtained. Based on the withering temperatures, withering wind speeds, withering relative humidity and withering water loss rates at multiple locations inside the hot air withering equipment at multiple historical third hot air withering time points, it is judged whether to adjust the working parameters of the hot air withering equipment in the third hot air withering stage.

[0013] Furthermore, determining multiple locations inside the hot air withering equipment includes: establishing a hot air withering equipment model; generating multiple candidate setting schemes based on a set of constraints, wherein the candidate setting schemes include at least one candidate monitoring point; for each of the candidate setting schemes, calculating the priority score of the candidate setting scheme based on the hot air withering equipment model; determining a target candidate setting scheme from the multiple candidate setting schemes based on the priority score of each of the candidate setting schemes; and determining multiple locations inside the hot air withering equipment based on the target candidate setting schemes.

[0014] Furthermore, the method further includes: after hot air withering is completed, collecting image information and point cloud information of the white tea; and determining the withering quality of the white tea based on the image information and point cloud information of the white tea.

[0015] Furthermore, determining the withering quality of the white tea based on the image information and point cloud information of the white tea includes: determining the color information of the white tea based on the image information of the white tea; determining the morphological information of the white tea based on the point cloud information of the white tea; and determining the withering quality of the white tea based on the color information of the white tea and the morphological information of the white tea.

[0016] Compared with the existing technology, the method for monitoring the withering process of white tea based on relevant physical and chemical parameters provided in this specification has at least the following beneficial effects:

[0017] 1. By monitoring the thickness of the tea leaves before double withering and the double withering parameters during double withering, as well as monitoring the thickness of the tea leaves before hot air withering and the hot air withering parameters during hot air withering, the withering process of white tea can be automatically monitored. Based on relevant physical and chemical parameters, the withering of white tea can be more standardized, thereby improving the withering quality of white tea.

[0018] 2. Through point cloud information, more accurate monitoring of the thickness of the spread before compound withering and hot air withering is achieved, effectively avoiding poor withering effect caused by uneven thickness or thickness that does not meet the preset requirements;

[0019] 3. After withering, monitor the withering quality of white tea to avoid subsequent processing of white tea with poor withering quality, and provide information basis for the optimization of subsequent withering process. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] This specification will be further described in the form of exemplary embodiments, which will be described in detail with reference to the accompanying drawings. These embodiments are not limiting, and in these embodiments, like numbers represent like structures, wherein:

[0021] Figure 1 This is a flow chart of a method for monitoring the withering process of white tea based on relevant marker physical and chemical parameters shown in one embodiment of the present application;

[0022] Figure 2 is a flow chart of generating first thickness adjustment information shown in an embodiment of the present application;

[0023] Figure 3 This is a flow chart showing how to determine multiple locations inside a hot air withering device in one embodiment of the present application. DETAILED DESCRIPTION

[0024] In order to more clearly illustrate the technical solutions of the embodiments of this specification, the following briefly introduces the drawings required for describing the embodiments.

[0025] A white tea withering process monitoring method based on relevant marker physicochemical parameters can be applied to the following white tea withering processes:

[0026] Process 1: Compound withering.

[0027] Among them, compound withering includes natural withering stage and light withering stage.

[0028] During the natural withering stage, the thickness of the white tea on the compound withering screen is 1.5 to 3 cm, the natural withering time is 1 to 1.5 hours, the humidity is 63% to 78%, the water loss rate is 2% to 5%, and it is turned over 2 to 3 times in the middle.

[0029] During the light withering stage, the light intensity of the artificial light source used to illuminate the white tea is 8950-14680 lux, the light withering time is 1.5-2.25 hours, the humidity is 64%-83%, and the water loss rate is 5%-10%.

[0030] Process 2: Hot air withering.

[0031] During the hot air withering stage, the thickness of the white tea laid on the hot air withering screen is 20 to 30 cm, wherein the hot air withering process includes the first hot air withering stage, the second hot air withering stage and the third hot air withering stage.

[0032] The first hot air withering stage lasts for 4 hours, with a withering temperature of 24±1°C, a relative humidity of 70%, and a water loss rate of 10% to 12%.

[0033] The second hot air withering stage lasts for 6 hours, with a withering temperature of 28±1°C, a relative humidity of 62%, and a water loss rate of 10% to 15%.

[0034] The third hot air withering stage lasts for 6 hours, with a withering temperature of 30±1°C, a relative humidity of 50%, and a water loss rate of 10% to 15%.

[0035] Figure 1 FIG. 1 is a flow chart of a method for monitoring the withering process of white tea based on relevant marker physicochemical parameters in one embodiment of the present application. Figure 1 As shown, a method for monitoring the withering process of white tea based on relevant marker physicochemical parameters may include the following process:

[0036] Step 110: Before performing the double withering, the thickness of the double withering white tea is detected, and first thickness adjustment information is generated based on the thickness of the double withering white tea.

[0037] Figure 2 This is a flow chart of generating the first thickness adjustment information shown in an embodiment of the present application, such as Figure 2 As shown, in some embodiments, generating the first thickness adjustment information may include the following steps:

[0038] After spreading the white tea on the compound withering screen, obtaining the point cloud information of the white tea on the compound withering screen;

[0039] Determine the thickness of the white tea compound withering screen based on the point cloud information of the white tea on the compound withering screen;

[0040] When the double-withering and spreading thickness of the white tea does not meet the preset double-withering and spreading thickness condition, generating first thickness adjustment information based on the double-withering and spreading thickness of the white tea;

[0041] When the compound withering and spreading thickness of the white tea meets the preset compound withering and spreading thickness condition, determining the spreading uniformity of the white tea on the compound withering sieve based on the point cloud information of the white tea on the compound withering sieve;

[0042] When the spreading uniformity of the white tea on the compound withering screen does not meet the preset spreading uniformity requirement, first thickness adjustment information is generated based on the spreading uniformity of the white tea on the compound withering screen.

[0043] Specifically, the thickness of the white tea at multiple locations can be determined based on the point cloud information of the white tea on the compound withering screen. The thickness of the white tea at multiple locations is weighted and summed to determine the compound withering and spreading thickness of the white tea. For example, the compound withering and spreading thickness of the white tea can be calculated using the following formula:

[0044]

[0045] Among them, T (average,1) The thickness of the white tea compound withering is a n is the preset weight, T (n,1) is the thickness of white tea at the nth position on the compound withering screen, and N is the total number of positions selected on the compound withering screen.

[0046] Among them, the preset compound withering spreading thickness condition can be that the compound withering spreading thickness is within a preset range (for example, 1.5 to 3 cm). When the compound withering spreading thickness of white tea meets the preset range, the compound withering spreading thickness of white tea meets the preset compound withering spreading thickness condition.

[0047] It can be understood that when the compound withering and spreading thickness of white tea does not meet the preset compound withering and spreading thickness condition, the first thickness adjustment information is generated based on the difference between the compound withering and spreading thickness of white tea and the preset interval. At this time, the first thickness adjustment information can include the difference.

[0048] Furthermore, the degree of uniformity of spreading of white tea on the compound withering screen can be calculated based on the following formula:

[0049]

[0050] Among them, D (uniformity,1) It refers to the degree of uniformity of spreading of white tea on the compound withering screen.

[0051] It is understood that the preset spreading uniformity requirement may be that the spreading uniformity of the white tea on the compound withering screen is less than a preset threshold. When the spreading uniformity of the white tea on the compound withering screen does not meet the preset spreading uniformity requirement, a location where the difference between the thickness of the white tea and the thickness of the compound withering screen is greater than a preset thickness difference threshold can be determined, and first thickness adjustment information can be generated based on this location. In this case, the first thickness adjustment information may include information such as the coordinates of the location.

[0052] After completing the thickness adjustment work, the thickness monitoring work of step 110 can be performed again until the thickness and spreading uniformity of the detected white tea compound withering meet the preset requirements, and then the subsequent withering work is allowed to proceed.

[0053] Step 120 : During the compound withering process, compound withering information at multiple historical compound withering time points is obtained, and compound withering parameters in the compound withering process are adjusted based on the compound withering information at multiple historical compound withering time points.

[0054] Specifically, step 120 may include the following process:

[0055] During the compound withering process, compound withering information at a plurality of historical compound withering time points is obtained, and compound withering parameters in the compound withering process are adjusted based on the compound withering information at the plurality of historical compound withering time points, including:

[0056] During the natural withering stage, the ambient temperature, ambient wind speed, ambient relative humidity and water loss rate at multiple historical natural withering time points are obtained;

[0057] Based on the ambient temperature, ambient wind speed, ambient relative humidity and water loss rate at multiple historical natural withering time points, determine whether the ambient temperature, ambient relative humidity and ambient wind speed need to be adjusted;

[0058] During the light withering stage, light intensity, ambient temperature, ambient wind speed, ambient relative humidity and water loss rate at multiple historical light withering time points are obtained;

[0059] Based on the light intensity, ambient temperature, ambient wind speed, ambient relative humidity and water loss rate at multiple historical light withering time points, it is determined whether the light intensity, ambient temperature, ambient relative humidity and ambient wind speed need to be adjusted.

[0060] Specifically, in the natural withering stage, it can be determined whether the ambient temperature, ambient wind speed, ambient relative humidity and water loss rate at multiple historical natural withering time points meet the preset ambient temperature requirements, ambient wind speed requirements, ambient relative humidity requirements and water loss rate requirements. If they meet the requirements, there is no need to adjust the ambient temperature, ambient relative humidity and ambient wind speed. If they do not meet the requirements, a prompt message will be issued to prompt the user to adjust the ambient temperature, ambient relative humidity and ambient wind speed. In the light withering stage, it can be determined whether the light intensity, ambient temperature, ambient wind speed, ambient relative humidity and water loss rate at multiple historical light withering time points meet the preset ambient temperature requirements, ambient wind speed requirements, ambient relative humidity requirements and water loss rate requirements. If they meet the requirements, there is no need to adjust the ambient temperature, ambient relative humidity and ambient wind speed. If they do not meet the requirements, a prompt message will be issued to prompt the user to adjust the ambient temperature, ambient relative humidity and ambient wind speed.

[0061] Step 130: Before hot air withering, detect the thickness of the white tea spread by hot air withering, and generate second thickness adjustment information based on the thickness of the white tea spread by hot air withering.

[0062] In some embodiments, step 130 specifically includes the following process:

[0063] After the white tea is spread on the hot air withering screen, the point cloud information of the white tea on the hot air withering screen is obtained;

[0064] Determine the thickness of the hot-air withering white tea based on the point cloud information of the white tea on the hot-air withering screen;

[0065] When the hot air withering spreading thickness of the white tea does not meet the preset hot air withering spreading thickness condition, generating second thickness adjustment information based on the hot air withering spreading thickness of the white tea;

[0066] When the hot air withering spreading thickness of the white tea meets the preset hot air withering spreading thickness condition, the spreading uniformity of the white tea on the hot air withering screen is determined based on the point cloud information of the white tea on the hot air withering screen;

[0067] When the spreading uniformity of the white tea on the hot air withering screen does not meet the first preset spreading uniformity requirement, first thickness adjustment information is generated based on the spreading uniformity of the white tea on the hot air withering screen.

[0068] Specifically, the thickness of the white tea at multiple locations can be determined based on the point cloud information of the white tea on the hot air withering screen. The thickness of the white tea at multiple locations is weighted and summed to determine the thickness of the hot air withered white tea. For example, the hot air withered white tea thickness can be calculated using the following formula:

[0069]

[0070] Among them, T (average,2) The thickness of the hot air withering white tea is m is the preset weight, T (m,2) is the thickness of the white tea at the mth position on the hot air withering screen, and M is the total number of positions selected on the hot air withering screen.

[0071] Among them, the preset hot air withering spreading thickness condition can be that the hot air withering spreading thickness is within a preset range (for example, 20 to 30 cm). When the hot air withering spreading thickness of white tea meets the preset range, the hot air withering spreading thickness of white tea meets the preset hot air withering spreading thickness condition.

[0072] It can be understood that when the hot air withering thickness of the white tea does not meet the preset hot air withering thickness condition, the second thickness adjustment information is generated based on the difference between the hot air withering thickness of the white tea and the preset interval. At this time, the first thickness adjustment information can include the difference.

[0073] Furthermore, the degree of uniformity of spreading of white tea on the hot air withering screen can be calculated based on the following formula:

[0074]

[0075] Among them, D (uniformity,2) It refers to the degree of uniformity of spreading of white tea on the hot air withering screen.

[0076] It is understood that the preset spreading uniformity requirement may be that the spreading uniformity of the white tea on the hot air withering screen is less than a preset threshold. When the spreading uniformity of the white tea on the hot air withering screen does not meet the preset spreading uniformity requirement, a location where the difference between the thickness of the white tea and the thickness of the hot air withering screen is greater than a preset thickness difference threshold can be determined, and first thickness adjustment information can be generated based on this location. In this case, the second thickness adjustment information may include information such as the coordinates of this location.

[0077] After completing the thickness adjustment work, the thickness monitoring work of step 130 can be performed again until the detected white tea hot air withering spreading thickness and spreading uniformity meet the preset requirements, and then the subsequent hot air withering work is allowed to proceed.

[0078] Step 140 : During the hot air withering process, hot air withering information at multiple historical hot air withering time points is obtained, and hot air withering parameters of the hot air withering process are adjusted based on the hot air withering information at multiple historical hot air withering time points.

[0079] In some embodiments, step 140 specifically includes the following process:

[0080] In the first hot air withering stage, the withering temperature, withering wind speed, withering relative humidity and withering water loss rate of multiple locations inside the hot air withering equipment at multiple historical first hot air withering time points are obtained. Based on the withering temperature, withering wind speed, withering relative humidity and withering water loss rate of multiple locations inside the hot air withering equipment at multiple historical first hot air withering time points, it is determined whether to adjust the working parameters of the hot air withering equipment in the first hot air withering stage. For example, it can be determined whether the withering temperature, withering wind speed, withering relative humidity and withering water loss rate at multiple historical first hot air withering time points meet the preset withering temperature requirements, withering wind speed requirements, withering relative humidity requirements and withering water loss rate requirements. If so, there is no need to adjust the working parameters of the hot air withering equipment in the first hot air withering stage. If not, a prompt message is issued to prompt the user to adjust the working parameters of the hot air withering equipment in the first hot air withering stage.

[0081] In the second hot air withering stage, the withering temperature, withering wind speed, withering relative humidity and withering water loss rate of multiple locations inside the hot air withering equipment at multiple historical second hot air withering time points are obtained. Based on the withering temperature, withering wind speed, withering relative humidity and withering water loss rate of multiple locations inside the hot air withering equipment at multiple historical second hot air withering time points, it is determined whether to adjust the working parameters of the hot air withering equipment in the second hot air withering stage. For example, it can be determined whether the withering temperature, withering wind speed, withering relative humidity and withering water loss rate at multiple historical second hot air withering time points meet the preset withering temperature requirements, withering wind speed requirements, withering relative humidity requirements and withering water loss rate requirements. If so, there is no need to adjust the working parameters of the hot air withering equipment in the second hot air withering stage. If not, a prompt message is issued to prompt the user to adjust the working parameters of the hot air withering equipment in the second hot air withering stage.

[0082] In the third hot air withering stage, the withering temperature, withering wind speed, withering relative humidity and withering water loss rate of multiple locations inside the hot air withering equipment at multiple historical third hot air withering time points are obtained. Based on the withering temperature, withering wind speed, withering relative humidity and withering water loss rate of multiple locations inside the hot air withering equipment at multiple historical third hot air withering time points, it is determined whether the working parameters of the hot air withering equipment in the third hot air withering stage are adjusted. For example, it can be determined whether the withering temperature, withering wind speed, withering relative humidity and withering water loss rate at multiple historical third hot air withering time points meet the preset withering temperature requirements, withering wind speed requirements, withering relative humidity requirements and withering water loss rate requirements. If so, there is no need to adjust the working parameters of the hot air withering equipment in the third hot air withering stage. If not, a prompt message is issued to prompt the user to adjust the working parameters of the hot air withering equipment in the third hot air withering stage.

[0083] Figure 3 This is a flow chart showing a method for determining multiple locations inside a hot air withering device according to an embodiment of the present application. Figure 3 As shown, in some embodiments, multiple locations inside the hot air withering device are determined, including:

[0084] Establishing a hot air withering equipment model, wherein the hot air withering equipment model may be a physical model simulating the hot air withering equipment;

[0085] Based on the constraint condition set, multiple candidate setting schemes are generated, wherein the candidate setting scheme includes at least one candidate monitoring point, and the constraint condition set may include a number constraint of the candidate monitoring points (e.g., a maximum number constraint, a minimum number constraint, etc.) and a distance constraint between two adjacent candidate monitoring points (e.g., a maximum distance constraint, a minimum distance constraint, etc.);

[0086] For each candidate setting scheme, calculate the priority score of the candidate setting scheme based on the hot air withering equipment model;

[0087] determining a target candidate setting scheme from the plurality of candidate setting schemes based on the priority score of each candidate setting scheme;

[0088] Based on the target candidate setting scheme, multiple locations inside the hot air withering equipment are determined.

[0089] Specifically, for each candidate setting scheme, after the candidate setting scheme is determined, multiple monitoring devices can be installed in the hot air withering equipment model according to the candidate setting scheme. The monitoring equipment is used to obtain information such as withering temperature, withering wind speed, and withering relative humidity, and perform a simulated white tea hot air withering experiment according to preset experimental parameters (for example, experimental temperature, experimental wind speed, and experimental relative humidity). The priority score of the candidate setting scheme is calculated through the data obtained by multiple monitoring devices during the experiment.

[0090] For example, the priority score of the candidate setting scheme can be calculated based on the correlation between the data obtained by multiple monitoring devices during the experiment and the preset experimental parameters and the data redundancy of multiple monitoring devices. Specifically, the correlation between the data obtained by multiple monitoring devices during the experiment and the preset experimental parameters can be calculated based on the similarity between the data obtained by multiple monitoring devices during the experiment and the preset experimental parameters, and the data redundancy of multiple monitoring devices can be calculated based on the overlap of the monitoring areas of the monitoring devices. The higher the correlation between the data obtained by multiple monitoring devices during the experiment and the preset experimental parameters, the greater the priority score of the candidate setting scheme, and the higher the data redundancy of multiple monitoring devices, the smaller the priority score of the candidate setting scheme.

[0091] As an example only, the priority score of the candidate setting solution can be calculated based on the following formula:

[0092]

[0093] Among them, S priority Set the priority score for the candidate solution, b1 and b2 are preset weights, S i The similarity between the data obtained by the monitoring equipment of the i-th candidate monitoring point included in the candidate setting scheme and the preset experimental parameters, D redundance The data redundancy of multiple monitoring devices for candidate setting solutions.

[0094] It can be understood that the candidate setting scheme with the largest priority score can be used as the target candidate setting scheme, and multiple positions inside the hot air withering equipment can be determined based on the target candidate setting scheme, and monitoring equipment can be installed at the determined multiple positions.

[0095] In some embodiments, a method for monitoring the withering process of white tea based on relevant marker physicochemical parameters may include step 150 , determining the withering quality of the white tea.

[0096] Specifically, step 150 may include the following process:

[0097] After hot air withering is completed, the image information and point cloud information of the white tea are collected;

[0098] Determine the withering quality of white tea based on its image and point cloud information

[0099] In some embodiments, determining the withering quality of white tea based on the image information and point cloud information of the white tea includes:

[0100] determining color information of the white tea based on the image information of the white tea;

[0101] Determine the morphological information of the white tea based on the point cloud information of the white tea;

[0102] The withering quality of white tea is determined based on the color information and morphological information of white tea.

[0103] During the withering process, the leaf tips, leaf margins, and young stems lose water faster than the leaf surface, and the leaf back loses water faster than the leaf surface, resulting in an imbalance between surface tension and leaf back tension. When the water loss rate of the buds and leaves drops to 20% to 25% (70% to 80% dry), the leaf margins curl up, and the leaf tips and stem ends tilt up due to water loss, making the leaves resemble the bottom of a boat, forming the natural leaf shape of white tea. In addition, due to the low water content of tea leaves, the enzyme activity is extremely weak, and the decomposition and conversion of chlorophyll is relatively stable. The retained chlorophyll components give the leaves a dark olive or gray olive color.

[0104] Specifically, the quality determination model can be used to determine the color information of the white tea based on the image information of the white tea, and to determine the morphological information of the white tea based on the point cloud information of the white tea, thereby determining the withering quality of the white tea. The quality determination model can be a machine learning model such as an artificial neural network (ANN) model, a recurrent neural network (RNN) model, a long short-term memory network (LSTM) model, or a bidirectional recurrent neural network (BRNN) model.

[0105] Finally, it should be understood that the embodiments described in this specification are intended only to illustrate the principles of the embodiments of this specification. Other variations may also fall within the scope of this specification. Therefore, by way of example and not limitation, alternative configurations of the embodiments of this specification may be considered consistent with the teachings of this specification. Accordingly, the embodiments of this specification are not limited to the embodiments explicitly described and illustrated in this specification.

Claims

1. A method for monitoring the withering process of white tea based on relevant marker physicochemical parameters, characterized in that: include: Before performing the double withering, detecting the thickness of the white tea after double withering, and generating first thickness adjustment information based on the thickness of the white tea after double withering; During the compound withering process, obtaining compound withering information at a plurality of historical compound withering time points, and adjusting compound withering parameters in the compound withering process based on the compound withering information at the plurality of historical compound withering time points; Before hot-air withering, detecting the thickness of the white tea spread by hot-air withering, and generating second thickness adjustment information based on the thickness of the white tea spread by hot-air withering; During the hot air withering process, hot air withering information at multiple historical hot air withering time points is obtained, and hot air withering parameters of the hot air withering process are adjusted based on the hot air withering information at the multiple historical hot air withering time points; Before performing the double withering, the thickness of the white tea double withering is detected, and first thickness adjustment information is generated based on the thickness of the white tea double withering, including: After spreading the white tea on the compound withering screen, obtaining the point cloud information of the white tea on the compound withering screen; Determining the compound withering and spreading thickness of the white tea based on the point cloud information of the white tea on the compound withering sieve. Specifically, determining the thickness of the white tea at multiple positions based on the point cloud information of the white tea on the compound withering sieve, and performing weighted summation of the thicknesses of the white tea at the multiple positions to determine the compound withering and spreading thickness of the white tea; When the double-withering and spreading thickness of the white tea does not meet the preset double-withering and spreading thickness condition, the first thickness adjustment information is generated based on the double-withering and spreading thickness of the white tea.

2. The method for monitoring the withering process of white tea based on relevant marker physicochemical parameters according to claim 1, characterized in that: Before performing the double withering, the method further comprises: detecting the thickness of the double withering white tea; and generating first thickness adjustment information based on the double withering white tea thickness. When the compound withering and spreading thickness of the white tea meets a preset compound withering and spreading thickness condition, determining the spreading uniformity of the white tea on the compound withering sieve based on the point cloud information of the white tea on the compound withering sieve; When the spreading uniformity of the white tea on the compound withering screen does not meet the preset spreading uniformity requirement, the first thickness adjustment information is generated based on the spreading uniformity of the white tea on the compound withering screen.

3. The method for monitoring the withering process of white tea based on relevant marker physicochemical parameters according to claim 1, characterized in that: The compound withering process includes a natural withering stage and a light withering stage; The method includes obtaining compound withering information at a plurality of historical compound withering time points during the compound withering process, and adjusting compound withering parameters in the compound withering process based on the compound withering information at the plurality of historical compound withering time points, including: During the natural withering stage, obtaining the ambient temperature, ambient wind speed, ambient relative humidity, and water loss rate at multiple historical natural withering time points; Based on the ambient temperature, ambient wind speed, ambient relative humidity and water loss rate at multiple historical natural withering time points, determine whether the ambient temperature, ambient relative humidity and ambient wind speed need to be adjusted.

4. The method for monitoring the withering process of white tea based on relevant marker physicochemical parameters according to claim 3, characterized in that: The method includes obtaining compound withering information at a plurality of historical compound withering time points during the compound withering process, and adjusting compound withering parameters in the compound withering process based on the compound withering information at the plurality of historical compound withering time points, including: During the light withering stage, light intensity, ambient temperature, ambient wind speed, ambient relative humidity, and water loss rate are obtained at multiple historical light withering time points; Based on the light intensity, ambient temperature, ambient wind speed, ambient relative humidity and water loss rate at multiple historical light withering time points, determine whether the light intensity, ambient temperature, ambient relative humidity and ambient wind speed need to be adjusted.

5. A method for monitoring the withering process of white tea based on relevant marker physicochemical parameters according to any one of claims 1 to 4, characterized in that: Before hot air withering, detecting the thickness of the white tea spread by hot air withering, and generating second thickness adjustment information based on the thickness of the white tea spread by hot air withering, includes: After the white tea is spread on the hot air withering screen, the point cloud information of the white tea on the hot air withering screen is obtained; Determining the hot-air withering spreading thickness of the white tea based on the point cloud information of the white tea on the hot-air withering screen; When the hot air withering spreading thickness of the white tea does not meet the preset hot air withering spreading thickness condition, the second thickness adjustment information is generated based on the hot air withering spreading thickness of the white tea.

6. A method for monitoring the withering process of white tea based on relevant marker physicochemical parameters according to any one of claims 1 to 4, characterized in that: The hot air withering process includes a first hot air withering stage, a second hot air withering stage and a third hot air withering stage; During the hot air withering process, hot air withering information at multiple historical hot air withering time points is obtained, and hot air withering parameters in the hot air withering process are adjusted based on the composite withering information at the multiple historical hot air withering time points, including: obtaining, in the first hot air withering stage, withering temperatures, withering wind speeds, withering relative humidity, and withering water loss rates at multiple locations within the hot air withering equipment at multiple historical first hot air withering time points, and determining whether to adjust operating parameters of the hot air withering equipment in the first hot air withering stage based on the withering temperatures, withering wind speeds, withering relative humidity, and withering water loss rates at multiple locations within the hot air withering equipment at multiple historical first hot air withering time points; in the second hot air withering stage, obtaining withering temperatures, withering wind speeds, withering relative humidity, and withering water loss rates at multiple locations within the hot air withering equipment at multiple historical second hot air withering time points, and determining whether to adjust operating parameters of the hot air withering equipment in the second hot air withering stage based on the withering temperatures, withering wind speeds, withering relative humidity, and withering water loss rates at multiple locations within the hot air withering equipment at multiple historical second hot air withering time points; In the third hot air withering stage, the withering temperature, withering wind speed, withering relative humidity and withering water loss rate of multiple locations inside the hot air withering equipment at multiple historical third hot air withering time points are obtained. Based on the withering temperature, withering wind speed, withering relative humidity and withering water loss rate of multiple locations inside the hot air withering equipment at multiple historical third hot air withering time points, it is determined whether the working parameters of the hot air withering equipment in the third hot air withering stage are adjusted.

7. The method for monitoring the withering process of white tea based on relevant marker physicochemical parameters according to claim 6, characterized in that: Determine multiple locations inside the hot air withering device, including: Establish a hot air withering equipment model; Based on the constraint condition set, generating a plurality of candidate setting schemes, wherein the candidate setting schemes include at least one candidate monitoring point; For each of the candidate setting schemes, calculating a priority score of the candidate setting scheme based on the hot air withering equipment model; determining a target candidate setting solution from the plurality of candidate setting solutions based on the priority score of each candidate setting solution; Based on the target candidate setting scheme, multiple positions inside the hot air withering equipment are determined.

8. A method for monitoring the withering process of white tea based on relevant marker physicochemical parameters according to any one of claims 1 to 4, characterized in that: Also includes: After hot air withering is completed, the image information and point cloud information of the white tea are collected; The withering quality of the white tea is determined based on the image information and the point cloud information of the white tea.

9. The method for monitoring the withering process of white tea based on relevant marker physicochemical parameters according to claim 8, characterized in that: The determining the withering quality of the white tea based on the image information and the point cloud information of the white tea includes: determining color information of the white tea based on the image information of the white tea; determining morphological information of the white tea based on the point cloud information of the white tea; The withering quality of the white tea is determined based on the color information of the white tea and the morphological information of the white tea.

Images