A tobacco leaf conditioning control method and device, electronic equipment and storage medium

Abstract

A tobacco leaf moisture control method and device, electronic equipment and storage medium are disclosed. Each batch of tobacco leaves includes multiple tobacco leaves, different types of tobacco leaves correspond to different leaf group numbers, and different batches of tobacco leaves are arranged according to a preset leaf group number arrangement mode. The tobacco leaf flow, incoming moisture of the tobacco leaves and target outlet moisture are obtained when the tobacco leaves are moisturized. The standard water addition amount is determined according to the tobacco leaf flow, incoming moisture and target outlet moisture. The outlet moisture maximum value and minimum value of the arrangement serial number in the previous batch of tobacco leaves reflect the moisture absorption characteristics of the tobacco leaves of this type under the first water addition ratio. The water addition ratio of the current batch of tobacco leaves is adjusted according to the outlet moisture maximum value and minimum value of the previous batch of tobacco leaves, so that the outlet moisture of the current batch of tobacco leaves is closer to the target outlet moisture, and the controllability of the outlet moisture of the tobacco leaves is increased. Moreover, through iteration of the water addition ratio of different batches of tobacco leaves, the water addition ratio can be stabilized, and the reliability is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of tobacco leaf moisture regeneration control, and in particular to a tobacco leaf moisture regeneration control method, device, electronic equipment and storage medium. Background Art

[0002] In tobacco production, leaf temperature and moisture content have always been core concerns for tobacco companies, playing a decisive role in product quality. The outlet moisture content of tempered tobacco leaves is affected by a variety of factors. Excluding equipment factors, the amount of water added is the most significant factor. Because water is added at the material inlet, while moisture detection occurs after processing, at a distance from the outlet, the time difference is 3 to 5 minutes. This significant lag in detection and control makes traditional PID (Proportion Integral Differential) control incapable of precisely controlling the amount of water added to regulate the outlet moisture content. Furthermore, existing tobacco leaf formulations utilize leaves of varying years, origins, and grades, resulting in significant variations in hygroscopicity between individual leaves. Even the use of advanced predictive PID algorithms cannot improve control accuracy.

[0003] For these reasons, most tobacco companies use the following method for tobacco leaf conditioning: Operators, based on their personal experience, control the water addition ratio according to the readings of infrared moisture meters at the inlet and outlet. A programmable logic controller (PLC) calculates the opening of the pneumatic diaphragm valve based on the manually set water addition ratio in real time, adjusting the instantaneous water addition flow rate to control the outlet moisture content.

[0004] However, the PLC lacks automatic feedback control for changes in outlet moisture. This control approach requires high operator skill, and control results and accuracy vary from operator to operator, negatively impacting product homogeneity. Furthermore, manual judgment is random and delayed, and manual intervention in water ratios still creates lags in the overall system. Summary of the Invention

[0005] The invention provides a tobacco leaf moisture regain control method to solve the tobacco leaf moisture regain control problem.

[0006] In a first aspect, the present invention provides a tobacco leaf moisture regeneration control method. The tobacco leaf moisture regeneration control method comprises: each batch of tobacco leaves includes multiple tobacco leaves, different types of tobacco leaves correspond to different leaf group numbers, and different batches of tobacco leaves are fed according to a preset leaf group number arrangement. The tobacco leaf moisture regeneration control method comprises:

[0007] Obtain tobacco leaf flow rate, incoming moisture content, and target outlet moisture content during rehumidification;

[0008] Determining a standard water addition amount according to the tobacco leaf flow rate, the incoming material moisture content, and the target outlet moisture content;

[0009] For the current tobacco leaf in the current batch, obtain the first water addition ratio, maximum outlet moisture value, and minimum outlet moisture value of the tobacco leaf with the same feeding sequence number in the previous batch of tobacco leaves;

[0010] determining a second water addition ratio for the current tobacco sheet according to the first water addition ratio, the maximum outlet moisture value, the minimum outlet moisture value, and the target outlet moisture value;

[0011] The humidifying device is controlled to humidify the current tobacco sheet according to the standard water addition amount and the second water addition ratio.

[0012] In a second aspect, the present invention provides a tobacco leaf moisture regeneration control device, comprising:

[0013] The parameter acquisition module is used to obtain the tobacco leaf flow rate, the incoming moisture content of the tobacco leaves, and the target outlet moisture content during the rehumidification process;

[0014] A standard water addition amount determination module is used to determine the standard water addition amount according to the tobacco leaf flow rate, the incoming material moisture content and the target outlet moisture content;

[0015] A water addition ratio data acquisition module is used to obtain, for the current tobacco leaf in the current batch of tobacco leaves, the first water addition ratio, the maximum outlet moisture value, and the minimum outlet moisture value of the tobacco leaf with the same feeding sequence number in the previous batch of tobacco leaves;

[0016] a second water addition ratio determination module, configured to determine a second water addition ratio for the current tobacco sheet according to the first water addition ratio, the maximum outlet moisture value, the minimum outlet moisture value, and the target outlet moisture value;

[0017] The tobacco sheet humidification module is used to control the humidification device to humidify the current tobacco sheet according to the standard water addition amount and the second water addition ratio.

[0018] In a third aspect, the present invention provides an electronic device, comprising:

[0019] at least one processor; and

[0020] a memory communicatively connected to the at least one processor; wherein,

[0021] The memory stores a computer program that can be executed by the at least one processor, and the computer program is executed by the at least one processor so that the at least one processor can execute the tobacco leaf moisture regeneration control method described in the first aspect of the present invention.

[0022] In a fourth aspect, the present invention provides a computer-readable storage medium storing computer instructions, wherein the computer instructions are used to enable a processor to implement the tobacco leaf moisture regeneration control method described in the first aspect of the present invention when executed.

[0023] The embodiment of the present invention provides a tobacco leaf rehumidification control method, wherein each batch of tobacco leaves includes multiple tobacco leaves, different types of tobacco leaves correspond to different leaf group numbers, and different batches of tobacco leaves are fed according to a preset leaf group number arrangement method to obtain the tobacco leaf flow rate, incoming moisture content and target outlet moisture content of the tobacco leaves during rehumidification; a standard water addition amount is determined based on the tobacco leaf flow rate, incoming moisture content and target outlet moisture content, and for the current tobacco leaf in the current batch of tobacco leaves, the first water addition ratio, maximum outlet moisture content and minimum outlet moisture content of the tobacco leaf with the same feeding number in the previous batch of tobacco leaves are obtained; the second water addition ratio of the current tobacco leaf is determined based on the first water addition ratio, maximum outlet moisture content, minimum outlet moisture content and target outlet moisture content, and the humidification device is controlled to humidify the current tobacco leaf according to the standard water addition amount and the second water addition ratio. The maximum and minimum outlet moisture values ​​of the numbered tobacco leaves from the previous batch reflect the hygroscopic characteristics of that type of tobacco at the first water addition ratio. Adjusting the water addition ratio of the current batch of tobacco leaves based on the maximum and minimum outlet moisture values ​​of the previous batch of tobacco leaves can bring the outlet moisture of the current batch of tobacco leaves closer to the target outlet moisture, increasing the controllability of the tobacco leaves' outlet moisture. Furthermore, by iterating the water addition ratio of different batches of tobacco leaves, the water addition ratio can be stabilized, improving the reliability of tobacco leaf processing.

[0024] It should be understood that the content described in this section is not intended to identify the key or important features of the embodiments of the present invention, nor is it intended to limit the scope of the present invention. Other features of the present invention will become readily understood through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0026] Figure 1 This is a flow chart of a tobacco leaf moisture regain control method provided in Example 1 of the present invention;

[0027] Figure 2 This is a schematic diagram of a process for collecting outlet moisture provided by the first embodiment of the present invention;

[0028] Figure 3 This is a flow chart of a tobacco leaf moisture regain control method provided in Example 2 of the present invention;

[0029] Figure 4 This is a structural diagram of a humidifying device provided in Example 2 of the present invention;

[0030] Figure 5 This is a schematic structural diagram of a tobacco leaf moisture regain control device provided in a third embodiment of the present invention;

[0031] Figure 6 It is a structural diagram of an electronic device provided in Embodiment 4 of the present invention. DETAILED DESCRIPTION

[0032] In order to enable those skilled in the art to better understand the solutions of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts should fall within the scope of protection of the present invention.

[0033] Example 1

[0034] Figure 1 This is a flow chart of a tobacco leaf moisture control method provided in the first embodiment of the present invention. This embodiment is applicable to the case where the water addition ratio of tobacco leaf moisture is controlled. The method can be executed by a tobacco leaf moisture control device. The tobacco leaf moisture control device can be implemented in the form of hardware and / or software. The tobacco leaf moisture control device can be configured in an electronic device. Figure 1 As shown, the tobacco leaf moisture regain control method includes:

[0035] S101. Obtaining the tobacco leaf flow rate during the rehumidification of the tobacco leaves, the incoming moisture content of the tobacco leaves, and the target outlet moisture content.

[0036] The leaves, stems and stalks of tobacco plants can all be made into tobacco, which can be specifically divided into foot leaves, middle and lower leaves, waist leaves, top leaves, etc. Each type is packaged into at least one piece of tobacco leaf. There are as many as 26 specific types of tobacco leaves, and each type corresponds to a specific part of the tobacco leaf.

[0037] Before the tobacco leaves are tempered, they are packaged in batches. Each batch of tobacco leaves includes multiple pieces of tobacco leaves. The packaging specifications of each batch and each piece of tobacco leaves are the same. Different types of tobacco leaves correspond to different leaf group numbers, and different batches of tobacco leaves are fed according to the preset leaf group number arrangement. It should be noted that different types of tobacco leaves can be fed repeatedly, which is specifically determined by the tobacco recipe. For example, the arrangement of the leaf group numbers is: 1233455678, among which the tobacco leaves with leaf group numbers 3 and 5 are fed twice, and a total of 10 pieces of tobacco leaves are fed, and the feeding sequence numbers are 1-10.

[0038] The tobacco leaf flow can be obtained through an electronic belt scale, that is, the electronic belt scale flow.

[0039] The incoming moisture content and target export moisture content of tobacco are both known and stored in the data. Different brands have different incoming moisture content. For example, the incoming moisture content can be 12%-13%, while the target export moisture content can be determined based on actual demand, such as 18%. When determining the tobacco brand, the incoming moisture content and target export moisture content of that brand can be directly retrieved.

[0040] S102. Determine the standard water addition amount based on the tobacco leaf flow rate, incoming material moisture content, and target outlet moisture content.

[0041] The standard water addition amount is calculated according to the following formula:

[0042]

[0043] Among them, W is the standard water addition amount, Y is the tobacco flow rate, L a is the incoming material moisture, L b The target outlet moisture.

[0044] S103. For the current tobacco leaf in the current batch of tobacco leaves, obtain the first water addition ratio, the maximum outlet moisture value, and the minimum outlet moisture value of the tobacco leaf with the same feeding sequence number in the previous batch of tobacco leaves.

[0045] Water is added at the entrance of the tobacco material, and moisture detection is carried out after the tobacco is processed, at a certain distance from the discharge port, with a time difference of 3 to 5 minutes. The weight of a piece of tobacco can be 200 kg, and it is also divided into multiple feedings during processing. For example, if 20 kg is fed at a time, 10 feedings can be made. After each feeding and rehydration, the outlet moisture can be collected once. After the entire piece of tobacco is fully rehydrated, the maximum and minimum outlet moisture values ​​can be obtained from multiple outlet moisture values. The first water addition ratio can be known during the rehydration process.

[0046] Different batches of tobacco leaves are fed according to a preset leaf group number arrangement. That is, tobacco leaves with the same feeding sequence number from the previous batch and the current batch are of the same type and are fed in the same order. However, for tobacco leaves of the same type but different feeding sequences, the water addition ratio is not very useful. For example, the leaf group number arrangement is: 123345. Among them, tobacco leaves with leaf group number 3 are fed twice, with feeding sequences 1-6. For tobacco leaves with feeding sequence 3 and leaf group number 3, the previous tobacco leaves have leaf group numbers 1 and 2. For tobacco leaves with feeding sequence 4 and leaf group number 3, the previous tobacco leaves have leaf group numbers 1, 2, and 3. After each type of tobacco leaf is processed in the rehumidifier, the rehumidifier environment also changes accordingly, that is, the humidity and temperature of the rehumidifier change. Therefore, even for tobacco leaves of the same type, if the feeding sequence is different, that is, the feeding sequence is different, and the corresponding rehumidifier environment is different, the required water addition ratio may also be different.

[0047] Therefore, in this embodiment, the first water addition ratio, the maximum outlet moisture value and the minimum outlet moisture value of the tobacco leaves with the same feeding number in the previous batch of tobacco leaves are obtained as basic data for calculating the second water addition ratio of the current tobacco leaves.

[0048] S104. Determine a second water addition ratio for the current tobacco sheet according to the first water addition ratio, the maximum outlet moisture value, the minimum outlet moisture value, and the target outlet moisture value.

[0049] The maximum and minimum outlet moisture values ​​of the serially numbered tobacco leaves in the previous batch reflect the hygroscopic characteristics of this type of tobacco leaves at the first water addition ratio. Generally speaking, the maximum outlet moisture value of a piece of tobacco leaf indicates the maximum extent of water absorption, and the minimum outlet moisture value indicates the minimum extent of water absorption. Generally speaking, it will tend to one direction, that is, the tobacco leaf has better water absorption and faster water absorption rate, or the tobacco leaf has poorer water absorption and slower water absorption rate.

[0050] Since different batches of tobacco leaves are fed according to the preset arrangement of leaf group numbers, the first water addition ratio of the previous batch of tobacco leaves with the same feeding sequence number can be used as the reference data for water addition of the current tobacco leaves. The water addition ratio of the current batch of tobacco leaves is adjusted according to the maximum and minimum outlet moisture values ​​of the previous batch of tobacco leaves, and the target outlet moisture value is the adjustment standard when adjusting the water addition ratio. For example, when the maximum outlet moisture value is larger than the target outlet moisture value, it means that this type of tobacco leaf has good water absorption and a fast water absorption rate, and the water addition ratio can be reduced accordingly. When the minimum outlet moisture value is smaller than the target outlet moisture value, it means that this type of tobacco leaf has poor water absorption and a slow water absorption rate, and the water addition ratio can be increased accordingly. This can make the outlet moisture value of the current batch of tobacco leaves closer to the target outlet moisture value, thereby increasing the controllability of the outlet moisture value of the tobacco leaves.

[0051] S105 , controlling the humidifying device to humidify the current tobacco sheet according to the standard water addition amount and the second water addition ratio.

[0052] The product of the standard water addition amount and the second water addition ratio is the actual water addition amount. This actual water addition amount can be used to control the humidification device to humidify the current tobacco leaf, so that the outlet moisture of the current tobacco leaf approaches the target outlet moisture. Initially, when the first batch of tobacco leaves enters the rehumidifier, the second water addition ratio is 1. Subsequent batches of tobacco leaves can be adjusted based on the water addition ratio of the previous batch. This cycle iterates until the water addition ratio reaches a stable value.

[0053] In order to clearly illustrate the process of adjusting the moisture content of tobacco leaves at the outlet, the following example is used to illustrate the process. The process of adjusting the moisture content of tobacco leaves at the outlet includes the following steps:

[0054] a. Matching of humidifying device and determining the amount of water to be added to each component of the humidifying device;

[0055] Add a set of water addition control devices (including large flow valve and small flow valve), and corresponding steam injection devices (including steam devices). The large flow valve, small flow valve and steam device are collectively referred to as humidification devices, which atomize water to increase the temperature and humidification of tobacco leaves.

[0056] b. Arrange and write the tobacco leaves. For the first batch of tobacco leaves, the initial water addition ratio is 1, and the maximum and minimum moisture values ​​are 0. For tobacco leaves other than the first batch, the water addition ratio is determined based on the water addition ratio, maximum and minimum outlet moisture values, and target outlet moisture values ​​of the tobacco leaves with the same feeding sequence in the previous batch.

[0057] c. When the equipment is in production, the tobacco leaves flow through the electronic scale. When the accumulated value of the tobacco leaf flow is greater than 5kg, the counter value is 1 (corresponding to the feeding sequence number), the first piece of tobacco leaves begins to enter the rehumidifier, and the humidification device begins to add water according to the water addition ratio;

[0058] d. After all the tobacco leaves of the current feed sequence number have been processed, the moisture content of the tobacco leaves is tested at the outlet;

[0059] e. Until all tobacco leaves are processed and the export moisture is tested, the processing of the current batch of tobacco leaves is completed.

[0060] In an optional example, assume that the current batch of tobacco leaves contains 38 pieces of tobacco leaves, each piece weighs 200 kg, and the total weight is 7600 kg. Figure 2 As shown in FIG, the process of collecting the outlet moisture of multiple tobacco leaves in a batch of tobacco leaves and the calculation process of the next water addition ratio are as follows:

[0061] S1. Start.

[0062] S2. Select the brand of tobacco leaves with the current leaf group number and transfer the brand-related data to the production unit.

[0063] S3: The accumulated value of tobacco leaf flow is greater than 0 and the count is 1.

[0064] S4. If the accumulated tobacco flow rate is greater than 200, the count is 2, moisture is collected, and the maximum and minimum moisture values ​​of the first piece of tobacco and the next water addition ratio are calculated.

[0065] S5. The accumulated value of tobacco flow is greater than 400, the count is 3, moisture is collected, and the maximum and minimum moisture values ​​of the second piece of tobacco and the next water addition ratio are calculated.

[0066] S6. Continue processing according to the above rules. When the accumulated value of tobacco flow is greater than or equal to 7600, collect the moisture content and count it to 39. Start calculating the maximum and minimum moisture content of the 38th piece of tobacco and the next water addition ratio.

[0067] S7. Save the data as relevant data of the current brand.

[0068] It should be noted that in this example, the water addition ratio for the next batch is calculated during the processing process, but in this embodiment one, the water addition ratio is calculated after the production of the previous batch of tobacco leaves is completed and before the production of the current batch of tobacco leaves (equivalent to the next batch). The calculation method is the same, only the timing of the calculation is different.

[0069] The embodiment of the present invention provides a tobacco leaf rehumidification control method, wherein each batch of tobacco leaves includes multiple tobacco leaves, different types of tobacco leaves correspond to different leaf group numbers, and different batches of tobacco leaves are fed according to a preset leaf group number arrangement method to obtain the tobacco leaf flow rate, incoming moisture content and target outlet moisture content of the tobacco leaves during rehumidification; a standard water addition amount is determined based on the tobacco leaf flow rate, incoming moisture content and target outlet moisture content, and for the current tobacco leaf in the current batch of tobacco leaves, the first water addition ratio, maximum outlet moisture content and minimum outlet moisture content of the tobacco leaf with the same feeding number in the previous batch of tobacco leaves are obtained; the second water addition ratio of the current tobacco leaf is determined based on the first water addition ratio, maximum outlet moisture content, minimum outlet moisture content and target outlet moisture content, and the humidification device is controlled to humidify the current tobacco leaf according to the standard water addition amount and the second water addition ratio. The maximum and minimum outlet moisture values ​​of the numbered tobacco leaves from the previous batch reflect the hygroscopic characteristics of that type of tobacco at the first water addition ratio. Adjusting the water addition ratio of the current batch of tobacco leaves based on the maximum and minimum outlet moisture values ​​of the previous batch of tobacco leaves can bring the outlet moisture of the current batch of tobacco leaves closer to the target outlet moisture, increasing the controllability of the tobacco leaves' outlet moisture. Furthermore, by iterating the water addition ratio of different batches of tobacco leaves, the water addition ratio can be stabilized, improving the reliability of tobacco leaf processing.

[0070] Example 2

[0071] Figure 3 This is a flow chart of a tobacco leaf moisture regeneration control method provided in the second embodiment of the present invention. The embodiment of the present invention is optimized based on the above-mentioned first embodiment. Figure 3 As shown, the tobacco leaf moisture regain control method includes:

[0072] S301. Obtain the tobacco leaf flow rate during the rehumidification of the tobacco leaves, the incoming moisture content of the tobacco leaves, and the target outlet moisture content.

[0073] S302. Determine the standard water addition amount according to the tobacco leaf flow rate, incoming material moisture content, and target outlet moisture content.

[0074] S303. For the current tobacco leaf in the current batch of tobacco leaves, obtain the first water addition ratio, the maximum outlet moisture value, and the minimum outlet moisture value of the tobacco leaf with the same feeding sequence number in the previous batch of tobacco leaves.

[0075] S301-S303 of this embodiment are similar to S101-S103 of the first embodiment. For details, please refer to S101-S103 and will not be described here.

[0076] S304: Calculate a first difference between the maximum outlet moisture value and the target outlet moisture value, and calculate a second difference between the minimum outlet moisture value and the target outlet moisture value.

[0077] The first difference and the second difference represent the parameters of the water absorption characteristics of this type of tobacco leaves. For example, for tobacco leaves with better water absorption, the maximum value of their outlet moisture is larger, then the absolute value of the first difference is larger, and the degree of deviation from the target outlet moisture is larger. For tobacco leaves with poorer water absorption, the minimum value of their outlet moisture is smaller, then the absolute value of their second difference is larger, and the degree of deviation from the target outlet moisture is also larger.

[0078] Since it is impossible to determine whether the water absorption of each type of tobacco leaf is better or worse, in order to adapt to different types of tobacco leaves, that is, tobacco leaves with different water absorption, the first difference between the maximum outlet moisture and the target outlet moisture, as well as the second difference between the minimum outlet moisture and the target outlet moisture, are calculated as parameters to measure the water absorption of the tobacco leaves.

[0079] S305: Determine whether the first difference and the second difference are both within a preset difference range.

[0080] This is an ideal value for the target outlet moisture. In actual implementation, even with the same water addition ratio, the outlet moisture may vary due to differences in incoming material moisture, environment, climate, equipment, etc. Therefore, a preset difference range can be set to determine whether the first difference and the second difference are both within the preset difference range. If so, execute S306 and S308; if not, execute S307 and S308.

[0081] The preset difference range may be ±1%.

[0082] S306: Use the first water addition ratio as the second water addition ratio of the current tobacco sheet.

[0083] When the first difference and the second difference are both within the preset difference range, it means that the water addition ratio meets the standard requirements, then the water addition ratio can continue to be used, that is, the first water addition ratio is used as the second water addition ratio of the current tobacco sheet, and there is no need to iteratively calculate the water addition ratio.

[0084] S307: Calculate the second water addition ratio of the current tobacco sheet according to the first water addition ratio, the first difference, the second difference and the target outlet moisture.

[0085] When the first difference and the second difference are outside the preset difference range, it indicates that the water addition ratio does not meet the standard requirement, and iterative calculation of the water addition ratio is required.

[0086] Specifically, the value with the larger absolute value between the first difference and the second difference can be determined as the iteration parameter, and the second water addition ratio of the current tobacco sheet can be calculated according to the first water addition ratio, the iteration parameter and the target outlet moisture.

[0087] The second water addition ratio is calculated according to the following formula:

[0088]

[0089] in, is the first water addition ratio of the tobacco leaf with the feeding sequence number N in the Tth batch of tobacco leaves, is the second water addition ratio of the tobacco leaf with the feed number N in the T+1th batch of tobacco leaves, L T_Nmax 、L T_Nmin are the maximum and minimum outlet moisture values ​​of tobacco leaves with feed number N in the Tth batch of tobacco leaves, L b The target outlet moisture.

[0090] That is, the iterative parameter used to adjust the water addition ratio is determined based on the absolute values ​​of the first and second differences. Generally speaking, there's a bias toward one direction: better water absorption and a faster rate of water absorption, or worse water absorption and a slower rate of water absorption. Therefore, the first / second difference with the larger absolute value is selected as the iterative parameter. It can be seen that when the iterative parameter is greater than the target outlet moisture, the second water addition ratio is reduced compared to the first water addition ratio coefficient. When the iterative parameter is less than the target outlet moisture, the second water addition ratio is increased compared to the first water addition ratio coefficient. That is, when the tobacco sheet has better water absorption, resulting in a higher moisture content, the water addition ratio is reduced. When the tobacco sheet has poorer water absorption, resulting in a lower moisture content, the water addition ratio is increased, thereby bringing the tobacco sheet's outlet moisture content to the target outlet moisture content. In this process, only the water addition ratio and outlet moisture content need to be considered, without having to worry about the tobacco processing process in the rehumidifier or modifying the processing machinery. This simplifies the tobacco moisture adjustment method, resulting in high efficiency and excellent results.

[0091] For example, the target outlet moisture ratio is 18%, and the preset difference range is ±1%. The water addition ratio of the next batch of the same feed number is shown in the following table:

[0092]

[0093] S308: Control the humidifying device to humidify the current tobacco sheet according to the standard water addition amount and the second water addition ratio.

[0094] In an optional embodiment, the humidifying device includes a large flow valve, a small flow valve and a steam device, that is, the amount of water added is the sum of the three, such as Figure 4 As shown, Figure 4 This is a schematic diagram of the humidification device, which includes a water supply device 1, a steam device 2, a hot air device 3, and an atomization device 4. The high-flow valve and the low-flow valve are collectively referred to as the water supply device 1. The high-flow valve and the steam device are constant-flow water supply devices, while the low-flow valve is a variable-flow water supply device.

[0095] In an optional embodiment, the humidification device is controlled to humidify the current tobacco sheet according to the standard water addition amount and the second water addition ratio, including: calculating the product of the standard water addition amount and the second water addition ratio to obtain the target water addition amount, calculating the difference between the target water addition amount and the water supply flow of the large flow valve and the steam device to obtain the actual water supply flow of the small flow valve, and controlling the humidification device to humidify the current tobacco sheet according to the water supply flow of the large flow valve and the steam device and the actual water supply flow.

[0096] For example, if the flow rate of the large flow valve is 140kg / h, the flow rate of the steam device is 50kg / h, the standard water addition amount is 200kg / h, the water addition coefficient is 1.2, and the target water addition amount is 240kg / h, then the actual water supply flow rate of the small flow valve can be calculated as: 240-140-50=50kg / h.

[0097] In another optional embodiment, the humidification device is controlled to humidify the current tobacco sheet according to the standard water addition amount and the second water addition ratio, including: calculating the difference between the standard water addition amount and the water supply flow of the large flow valve and the steam device to obtain the standard water supply flow of the small flow valve, calculating the product of the second water addition ratio and the standard water supply flow to obtain the actual water supply flow of the small flow valve, and controlling the humidification device to humidify the current tobacco sheet according to the water supply flow of the large flow valve and the steam device and the actual water supply flow.

[0098] For example, if the high-flow valve has a flow rate of 140 kg / h, the steam unit has a flow rate of 50 kg / h, and the standard water addition rate is 200 kg / h, then the standard water supply flow rate of the low-flow valve can be calculated to be 10 kg / h. At the second water addition ratio of 1.2, the actual water supply flow rate of the low-flow valve is 12 kg / h. For example, if the low-flow valve has a water supply flow rate range of 0-100 kg / h, with 50 kg / h as the middle number, and the water supply flow rate of the low-flow valve is adjustable, it can be used to adjust the water addition ratio from 0 to 2.

[0099] Of course, for the same type of tobacco leaves, the calculation method of the actual water supply flow of the small flow valve is different, and the adjusted second water addition ratio is also different. However, the final adjustment effect is that the outlet moisture tends to the target outlet moisture.

[0100] Example 3

[0101] Figure 5 This is a schematic diagram of the structure of a tobacco leaf moisture regain control device provided in Example 3 of the present invention. Figure 5 As shown, the tobacco leaf moisture regain control device includes:

[0102] Parameter acquisition module 501, used to obtain tobacco leaf flow rate, incoming tobacco leaf moisture content, and target outlet tobacco leaf moisture content during conditioning;

[0103] A standard water addition amount determination module 502 is configured to determine a standard water addition amount based on the tobacco leaf flow rate, the incoming material moisture content, and the target outlet moisture content;

[0104] The water addition ratio data acquisition module 503 is used to obtain, for the current tobacco leaf in the current batch of tobacco leaves, the first water addition ratio, the maximum outlet moisture value, and the minimum outlet moisture value of the tobacco leaf with the same feed sequence number in the previous batch of tobacco leaves;

[0105] A second water addition ratio determination module 504 is configured to determine a second water addition ratio for the current tobacco sheet based on the first water addition ratio, the maximum outlet moisture value, the minimum outlet moisture value, and the target outlet moisture value;

[0106] The tobacco sheet humidification module 505 is used to control the humidification device to humidify the current tobacco sheet according to the standard water addition amount and the second water addition ratio.

[0107] In an optional embodiment, the standard water addition amount is calculated according to the following formula:

[0108]

[0109] Among them, W is the standard water addition amount, Y is the tobacco flow rate, L a is the incoming material moisture, L b The target outlet moisture.

[0110] In an optional embodiment, the second water addition ratio determination module 504 includes:

[0111] a difference calculation submodule, configured to calculate a first difference between the maximum outlet moisture value and the target outlet moisture value, and to calculate a second difference between the minimum outlet moisture value and the target outlet moisture value;

[0112] A difference judgment submodule is used to judge whether the first difference and the second difference are both within a preset difference range; if so, the content executed by the water addition ratio determination submodule is executed; if not, the content executed by the water addition ratio calculation submodule is executed;

[0113] a water addition ratio determination submodule, configured to use the first water addition ratio as the second water addition ratio for the current tobacco sheet;

[0114] The water addition ratio calculation submodule is used to calculate the second water addition ratio of the current tobacco sheet based on the first water addition ratio, the first difference, the second difference and the target outlet moisture.

[0115] Based on the previous embodiment, the water addition ratio calculation submodule includes:

[0116] an iteration parameter determining unit, configured to determine the value having the larger absolute value between the first difference and the second difference as an iteration parameter;

[0117] A water addition ratio determination unit is used to calculate the second water addition ratio of the current tobacco sheet based on the first water addition ratio, the iteration parameter and the target outlet moisture.

[0118] Based on the previous embodiment, the second water addition ratio is calculated according to the following formula:

[0119]

[0120] in, is the first water addition ratio of the tobacco leaf with the feeding sequence number N in the Tth batch of tobacco leaves, is the second water addition ratio of the tobacco leaf with the feed number N in the T+1th batch of tobacco leaves, L T_Nmax 、L T_Nmin are the maximum and minimum outlet moisture values ​​of tobacco leaves with feed number N in the Tth batch of tobacco leaves, L b The target outlet moisture.

[0121] In an optional embodiment, the humidification device includes a large flow valve, a small flow valve and a steam device, the large flow valve and the steam device are constant flow water supply devices, the small flow valve is a variable flow valve water supply device, and the smoke sheet humidification module 505 includes:

[0122] a target water addition amount calculation submodule, configured to calculate the product of the standard water addition amount and the second water addition ratio to obtain a target water addition amount;

[0123] The first submodule for calculating water supply flow rate is used to calculate the difference between the target water addition amount and the water supply flow rate of the large flow valve and the steam device to obtain the actual water supply flow rate of the small flow valve;

[0124] The first submodule for humidifying the tobacco slices is used to control the humidification device to humidify the current tobacco slices according to the water supply flow of the large flow valve and the steam device and the actual water supply flow.

[0125] In an optional embodiment, the humidification device includes a large flow valve, a small flow valve and a steam device, the large flow valve and the steam device are constant flow water supply devices, the small flow valve is a variable flow valve water supply device, and the smoke sheet humidification module 505 includes:

[0126] A standard water supply flow calculation submodule is used to calculate the difference between the standard water addition amount and the water supply flow of the large flow valve and the steam device to obtain the standard water supply flow of the small flow valve;

[0127] A second water supply flow calculation submodule is configured to calculate the product of the second water addition ratio and the standard water supply flow to obtain the actual water supply flow of the small flow valve;

[0128] The second submodule for humidifying the tobacco slices is used to control the humidification device to humidify the current tobacco slices according to the water supply flow of the large flow valve and the steam device and the actual water supply flow.

[0129] The tobacco leaf moisture regain control device provided in the embodiment of the present invention can execute the tobacco leaf moisture regain control method provided in any embodiment of the present invention, and has the corresponding functional modules and beneficial effects of the execution method.

[0130] Example 4

[0131] Figure 6 A schematic diagram of an electronic device 40 that can be used to implement an embodiment of the present invention is shown. The electronic device is intended to represent various forms of digital computers, such as laptop computers, desktop computers, workstations, personal digital assistants, servers, blade servers, mainframe computers, and other suitable computers. The components shown herein, their connections and relationships, and their functions are merely examples and are not intended to limit the implementation of the present invention described and / or claimed herein.

[0132] like Figure 6 As shown, the electronic device 40 includes at least one processor 41 and a memory, such as a read-only memory (ROM) 42, a random access memory (RAM) 43, etc., which is communicatively connected to the at least one processor 41. The memory stores a computer program that can be executed by the at least one processor, and the processor 41 can perform various appropriate actions and processes according to the computer program stored in the read-only memory (ROM) 42 or the computer program loaded from the storage unit 48 into the random access memory (RAM) 43. Various programs and data required for the operation of the electronic device 40 can also be stored in the RAM 43. The processor 41, ROM 42, and RAM 43 are connected to each other via a bus 44. An input / output (I / O) interface 45 is also connected to the bus 44.

[0133] Multiple components in the electronic device 40 are connected to the I / O interface 45, including an input unit 46, such as a keyboard, a mouse, etc.; an output unit 47, such as various types of displays, speakers, etc.; a storage unit 48, such as a magnetic disk, an optical disk, etc.; and a communication unit 49, such as a network card, a modem, a wireless communication transceiver, etc. The communication unit 49 allows the electronic device 40 to exchange information / data with other devices via a computer network such as the Internet and / or various telecommunication networks.

[0134] Processor 41 can be any general-purpose and / or specialized processing component with processing and computing capabilities. Examples of processor 41 include, but are not limited to, a central processing unit (CPU), a graphics processing unit (GPU), various specialized artificial intelligence (AI) computing chips, various processors running machine learning model algorithms, digital signal processors (DSPs), and any other suitable processor, controller, microcontroller, etc. Processor 41 executes the various methods and processes described above, such as the tobacco leaf moisture recovery control method.

[0135] In some embodiments, the tobacco leaf moisture control method can be implemented as a computer program tangibly embodied in a computer-readable storage medium, such as storage unit 48. In some embodiments, part or all of the computer program can be loaded and / or installed on electronic device 40 via ROM 42 and / or communication unit 49. When the computer program is loaded into RAM 43 and executed by processor 41, one or more steps of the tobacco leaf moisture control method described above can be performed. Alternatively, in other embodiments, processor 41 can be configured to execute the tobacco leaf moisture control method in any other suitable manner (e.g., via firmware).

[0136] Various embodiments of the systems and techniques described above can be implemented in digital electronic circuit systems, integrated circuit systems, field programmable gate arrays (FPGAs), application specific integrated circuits (ASICs), application specific standard products (ASSPs), system-on-chip systems (SOCs), complex programmable logic devices (CPLDs), computer hardware, firmware, software, and / or combinations thereof. These various embodiments can include being implemented in one or more computer programs that are executable and / or interpreted on a programmable system that includes at least one programmable processor, which can be a special purpose or general purpose programmable processor that can receive data and instructions from a storage system, at least one input device, and at least one output device, and transmit data and instructions to the storage system, the at least one input device, and the at least one output device.

[0137] Computer programs for implementing the methods of the present invention may be written in any combination of one or more programming languages. These computer programs may be provided to a processor of a general-purpose computer, a special-purpose computer, or other programmable data processing device, such that when the computer program is executed by the processor, the functions / operations specified in the flowcharts and / or block diagrams are implemented. The computer program may be executed entirely on the machine, partially on the machine, as a stand-alone software package, partially on the machine and partially on a remote machine, or entirely on a remote machine or server.

[0138] In the context of the present invention, computer-readable storage medium can be a tangible medium that can contain or store a computer program for use by an instruction execution system, device or equipment or used in combination with an instruction execution system, device or equipment. Computer-readable storage medium can include but is not limited to electronic, magnetic, optical, electromagnetic, infrared or semiconductor systems, devices or equipment, or any suitable combination of the foregoing. Alternatively, computer-readable storage medium can be a machine-readable signal medium. A more specific example of a machine-readable storage medium can include an electrical connection based on one or more lines, a portable computer disk, a hard disk, a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disk read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing.

[0139] To provide interaction with a user, the systems and techniques described herein can be implemented on an electronic device having: a display device (e.g., a CRT (cathode ray tube) or LCD (liquid crystal display) monitor) for displaying information to the user; and a keyboard and pointing device (e.g., a mouse or trackball) through which the user can provide input to the electronic device. Other types of devices can also be used to provide interaction with the user; for example, the feedback provided to the user can be any form of sensory feedback (e.g., visual feedback, auditory feedback, or tactile feedback); and input from the user can be received in any form (including acoustic input, voice input, or tactile input).

[0140] The systems and techniques described herein can be implemented in a computing system that includes back-end components (e.g., as a data server), or a computing system that includes middleware components (e.g., an application server), or a computing system that includes front-end components (e.g., a user computer with a graphical user interface or web browser through which a user can interact with implementations of the systems and techniques described herein), or a computing system that includes any combination of such back-end components, middleware components, or front-end components. The components of the system can be interconnected by any form or medium of digital data communication (e.g., a communication network). Examples of communication networks include: a local area network (LAN), a wide area network (WAN), a blockchain network, and the Internet.

[0141] A computing system may include clients and servers. The clients and servers are typically remote from each other and typically interact via a communication network. This client-server relationship arises through computer programs running on the respective computers, creating a client-server relationship. The server may be a cloud server, also known as a cloud computing server or cloud host. This server is a hosting product within the cloud computing service ecosystem that addresses the management difficulties and limited scalability of traditional physical hosting and VPS services.

[0142] It should be understood that the various forms of the processes shown above can be used to reorder, add, or delete steps. For example, the steps described in the present invention can be performed in parallel, sequentially, or in a different order, as long as the desired results of the technical solution of the present invention can be achieved. This is not limited herein.

[0143] The above specific embodiments do not limit the scope of protection of the present invention. Those skilled in the art will appreciate that various modifications, combinations, sub-combinations, and substitutions may be made based on design requirements and other factors. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention are intended to be included within the scope of protection of the present invention.

Claims

1. A tobacco leaf moisture regeneration control method, characterized in that: Each batch of tobacco leaves includes multiple tobacco leaves. Different types of tobacco leaves correspond to different leaf group numbers. Different batches of tobacco leaves are fed according to a preset arrangement of leaf group numbers. Tobacco leaves with the same feeding sequence number in the previous batch and the current batch are of the same type. The tobacco leaf moisture regeneration control method includes: Obtaining the tobacco leaf flow rate, incoming moisture content, and target outlet moisture content during rehumidification of the tobacco leaves; the incoming moisture content is 12%-13%; Determining a standard water addition amount according to the tobacco leaf flow rate, the incoming material moisture content, and the target outlet moisture content; For a current tobacco leaf in a current batch of tobacco leaves, obtain the first water addition ratio, maximum outlet moisture value, and minimum outlet moisture value of tobacco leaves with the same feed number from a previous batch of tobacco leaves. The maximum outlet moisture value and the minimum outlet moisture value reflect the hygroscopic characteristics of this type of tobacco leaf at the first water addition ratio. determining a second water addition ratio for the current tobacco sheet according to the first water addition ratio, the maximum outlet moisture value, the minimum outlet moisture value, and the target outlet moisture value; controlling the humidification device to humidify the current tobacco sheet according to the standard water addition amount and the second water addition ratio; The determining of the second water addition ratio of the current tobacco sheet according to the first water addition ratio, the maximum outlet moisture value, the minimum outlet moisture value, and the target outlet moisture value includes: Calculating a first difference between the maximum outlet moisture and the target outlet moisture, and calculating a second difference between the minimum outlet moisture and the target outlet moisture; Determining whether the first difference and the second difference are both within a preset difference range; If yes, use the first water adding ratio as the second water adding ratio of the current tobacco sheet; If not, calculating a second water addition ratio for the current tobacco sheet according to the first water addition ratio, the first difference, the second difference, and the target outlet moisture; The calculating the second water addition ratio of the current tobacco sheet according to the first water addition ratio, the first difference, the second difference, and the target outlet moisture includes: Determine the value with the larger absolute value between the first difference and the second difference as an iteration parameter; Calculating a second water addition ratio for the current tobacco sheet according to the first water addition ratio, the iteration parameter, and the target outlet moisture; The second water addition ratio is calculated according to the following formula: in, is the first water addition ratio of the tobacco leaf with the feeding sequence number N in the Tth batch of tobacco leaves, is the second water addition ratio of the tobacco leaf with the feed number N in the T+1th batch of tobacco leaves, L T_Nmax 、L T_Nmin are the maximum and minimum outlet moisture values ​​of tobacco leaves with feed number N in the Tth batch of tobacco leaves, L b The target outlet moisture.

2. The tobacco leaf moisture regain control method according to claim 1, wherein: The standard water addition amount is calculated according to the following formula: Among them, W is the standard water addition amount, Y is the tobacco flow rate, L a is the incoming material moisture, L b The target outlet moisture.

3. The tobacco leaf moisture regain control method according to claim 1, wherein: The humidifying device includes a large flow valve, a small flow valve and a steam device, wherein the large flow valve and the steam device are constant flow water supply devices, and the small flow valve is a variable flow valve water supply device. The humidifying device is controlled to humidify the current tobacco sheet according to the standard water addition amount and the second water addition ratio, including: Calculating the product of the standard water addition amount and the second water addition ratio to obtain a target water addition amount; Calculating the difference between the target water addition amount and the water supply flow of the large flow valve and the steam device to obtain the actual water supply flow of the small flow valve; The humidifying device is controlled to humidify the current tobacco sheet according to the water supply flow of the large flow valve and the steam device and the actual water supply flow.

4. The tobacco leaf moisture regain control method according to claim 1, wherein: The humidifying device includes a large flow valve, a small flow valve and a steam device, wherein the large flow valve and the steam device are constant flow water supply devices, and the small flow valve is a variable flow valve water supply device. The humidifying device is controlled to humidify the current tobacco sheet according to the standard water addition amount and the second water addition ratio, including: Calculating the difference between the standard water addition amount and the water supply flow of the large flow valve and the steam device to obtain the standard water supply flow of the small flow valve; Calculating the product of the second water addition ratio and the standard water supply flow rate to obtain the actual water supply flow rate of the small flow valve; The humidifying device is controlled to humidify the current tobacco sheet according to the water supply flow of the large flow valve and the steam device and the actual water supply flow.

5. A tobacco leaf moisture regeneration control device, characterized in that: The packaging specifications of each batch and each piece of tobacco leaves are the same. Different types of tobacco leaves correspond to different leaf group numbers. Different batches of tobacco leaves are fed according to the preset leaf group number arrangement method. The tobacco leaves with the same feeding sequence number in the previous batch and the current batch are of the same type. The device includes: The parameter acquisition module is used to obtain the tobacco leaf flow rate, the incoming moisture content of the tobacco leaves, and the target outlet moisture content during the rehumidification process; A standard water addition amount determination module is used to determine the standard water addition amount according to the tobacco leaf flow rate, the incoming material moisture content and the target outlet moisture content, wherein the incoming material moisture content is 12%-13%; A water addition ratio data acquisition module is used to obtain, for a current tobacco leaf in a current batch of tobacco leaves, a first water addition ratio, a maximum outlet moisture value, and a minimum outlet moisture value of tobacco leaves with the same feed sequence number from a previous batch of tobacco leaves, wherein the maximum outlet moisture value and the minimum outlet moisture value reflect the hygroscopic characteristics of this type of tobacco leaf at the first water addition ratio; a second water addition ratio determination module, configured to determine a second water addition ratio for the current tobacco sheet according to the first water addition ratio, the maximum outlet moisture value, the minimum outlet moisture value, and the target outlet moisture value; a tobacco sheet humidification module, configured to control a humidification device to humidify the current tobacco sheet according to the standard water addition amount and the second water addition ratio; The second water addition ratio determination module includes: a difference calculation submodule, configured to calculate a first difference between the maximum outlet moisture value and the target outlet moisture value, and to calculate a second difference between the minimum outlet moisture value and the target outlet moisture value; A difference judgment submodule is used to judge whether the first difference and the second difference are both within a preset difference range; if so, the content executed by the water addition ratio determination submodule is executed; if not, the content executed by the water addition ratio calculation submodule is executed; a water addition ratio determination submodule, configured to use the first water addition ratio as the second water addition ratio for the current tobacco sheet; a water addition ratio calculation submodule, configured to calculate a second water addition ratio for the current tobacco sheet based on the first water addition ratio, the first difference, the second difference, and the target outlet moisture; The water addition ratio calculation submodule includes: an iteration parameter determining unit, configured to determine the value having the larger absolute value between the first difference and the second difference as an iteration parameter; a water addition ratio determination unit, configured to calculate a second water addition ratio for the current tobacco sheet according to the first water addition ratio, the iteration parameter, and the target outlet moisture content; The second water addition ratio is calculated according to the following formula: in, is the first water addition ratio of the tobacco leaf with the feeding sequence number N in the Tth batch of tobacco leaves, is the second water addition ratio of the tobacco leaf with the feed number N in the T+1th batch of tobacco leaves, L T_Nmax 、L T_Nmin are the maximum and minimum outlet moisture values ​​of tobacco leaves with feed number N in the Tth batch of tobacco leaves, L b The target outlet moisture.

6. An electronic device, characterized in that: The electronic device comprises: at least one processor; and a memory communicatively connected to the at least one processor; wherein, The memory stores a computer program that can be executed by the at least one processor, and the computer program is executed by the at least one processor so that the at least one processor can execute the tobacco leaf moisture regeneration control method according to any one of claims 1 to 4.

7. A computer-readable storage medium, characterized in that The computer-readable storage medium stores computer instructions, and the computer instructions are used to enable a processor to implement the tobacco leaf moisture regeneration control method according to any one of claims 1 to 4 when executed.

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