System and method for intelligently regulating and controlling temperature and humidity in tobacco baking process

Abstract

The invention discloses an intelligent regulation and control system and method for temperature and humidity in the tobacco baking process, and relates to the technical field of intelligent regulation and control of tobacco baking, and the system comprises a tobacco yellowing period monitoring module, a tobacco color fixing period monitoring module, a tobacco stem drying period monitoring module, a tobacco baking evaluation module, an early warning terminal and a database. Through temperature and humidity baking monitoring under each layer of a tobacco yellowing period, a color fixing period and a stem drying period, omnibearing monitoring during corresponding baking of the tobacco is further realized, accurate temperature and humidity regulation and control of the tobacco under each layer stage is realized, effective temperature and humidity regulation and control in the corresponding baking process of the tobacco are further guaranteed, and the tobacco quality is improved. And meanwhile, data acquisition is performed on the tobaccos finished in the three stages after regulation and control, and the finished product quality of corresponding baking of the tobaccos is judged, so that whether the temperature and humidity regulation during corresponding baking of the tobaccos is effective or not is known, and therefore, efficient and intelligent tobacco baking guarantee is realized, and the tobacco baking quality is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of intelligent control of tobacco baking, and in particular to a system and method for intelligent control of temperature and humidity in a tobacco baking process. Background Art

[0002] Baking is a necessary process for tobacco shaping, so it is necessary to monitor and control the temperature and humidity of the tobacco during the baking process to ensure the effective shaping and shaping quality of the tobacco. By monitoring the baking temperature and humidity of the tobacco in the three stages according to the type of tobacco, targeted intelligent regulation can be achieved, thereby improving the overall quality and baking efficiency of tobacco baking and reducing the probability of quality risks in tobacco baking.

[0003] Prior art, such as the invention patent application with publication number CN118224831A, discloses a solar-assisted heating intelligently controlled tobacco drying method and system. This system relates to the technical field of tobacco curing management. The system comprises: a curing room with a solar collector and an angle adjuster installed at the top; a heating chamber equipped with a steam jet pump and a condenser, each connected to the solar collector; an auxiliary circulation system connected to a circulating air chamber within the heating chamber for air circulation; an auxiliary heating system equipped with a steam jet pump and an evaporator; and a controller connected to the auxiliary heating system and the auxiliary circulation system to control output. This method addresses the technical problems of existing tobacco curing processes, such as low energy efficiency, high energy consumption, environmental pollution, high costs, and an inability to precisely control temperature and humidity during the tobacco curing process.

[0004] With respect to the above scheme, there are the following technical problems: the above invention mainly solves the problems of low energy utilization rate, high energy consumption, environmental pollution and high cost in the tobacco baking process, and monitors the baking temperature and humidity of tobacco corresponding to the yellowing period, color fixing period and dry grain period, so as to realize timely and effective temperature and humidity control to ensure the quality of tobacco baking. The initial baking parameter range of tobacco corresponding to the yellowing period is not analyzed according to the type of tobacco baking, and the baking monitoring of tobacco in the yellowing period cannot be performed. It is impossible to judge whether the initial baking parameters of tobacco corresponding to the yellowing period need to be adjusted. The color fixing period is not monitored and understood, and the intelligent adjustment of the parameters of tobacco corresponding to the color fixing period is not realized. The tobacco in the dry grain period is not monitored, and the baking situation of tobacco corresponding to the dry grain period cannot be timely understood. It is impossible to know whether the baking temperature and humidity of tobacco in the dry grain period are compliant, and timely and efficient intelligent regulation cannot be performed, which reduces the baking quality and efficiency of tobacco. Summary of the Invention

[0005] In view of the above-mentioned technical deficiencies, the purpose of the present invention is to provide a system and method for intelligently controlling temperature and humidity in a tobacco baking process.

[0006] In order to solve the above technical problems, the present invention adopts the following technical solution: The present invention provides an intelligent temperature and humidity control system for the tobacco baking process, including: a tobacco yellowing period monitoring module, which is used to analyze and obtain the initial baking parameter range of the tobacco corresponding to the yellowing period according to the type of tobacco baking, and perform baking monitoring on the tobacco during the yellowing period to determine whether the initial baking parameters of the tobacco corresponding to the yellowing period need to be adjusted.

[0007] The tobacco color-fixing period monitoring module is used to monitor the tobacco's baking status during the color-fixing period after the tobacco has completed the yellowing period, and then analyze and obtain parameter adjustments for the tobacco during the color-fixing period.

[0008] The tobacco drying period monitoring module is used to monitor the tobacco during the drying period after the tobacco has completed the color-fixing period, obtain tobacco drying images corresponding to the drying period, and analyze the temperature and humidity control of the tobacco during the drying period.

[0009] The tobacco baking evaluation module is used to obtain the physical appearance data of the tobacco during the baking process, and then determine the quality of the finished product of the tobacco.

[0010] The early warning terminal is used to issue an early warning when the quality of the finished tobacco product corresponding to the baking is unqualified.

[0011] In a second aspect, the present invention provides an intelligent temperature and humidity control method for the tobacco baking process, including: F1, tobacco yellowing period monitoring: according to the type of tobacco baking, the initial baking parameter range of the tobacco corresponding to the yellowing period is analyzed and obtained, and the tobacco is baked during the yellowing period to determine whether the initial baking parameters of the tobacco corresponding to the yellowing period need to be adjusted.

[0012] F2. Monitoring of tobacco color-fixing period: After the tobacco has finished the yellowing period, monitor the tobacco's baking status during the color-fixing period, and then analyze and adjust the parameters for the color-fixing period.

[0013] F3. Tobacco Drying Period Monitoring: After the tobacco has completed the color-fixing period, the tobacco is monitored during the drying period. Tobacco drying images corresponding to the drying period are obtained, and the temperature and humidity control of the tobacco during the drying period is analyzed.

[0014] F4. Tobacco Curing Evaluation: Obtain the physical appearance data of the tobacco during the curing process, and then predict the quality of the finished tobacco product.

[0015] F5. Early warning: Issue an early warning when the quality of the tobacco product corresponding to the baking is unqualified.

[0016] Compared with the prior art, the beneficial effects of the present invention are: 1. The present invention provides an intelligent temperature and humidity control system and method for the tobacco baking process. By monitoring the temperature and humidity of tobacco at various levels during the yellowing period, color fixing period and dry tendon period, all-round monitoring of the tobacco during baking is achieved, and precise temperature and humidity control of the tobacco at various stages is achieved, further ensuring effective temperature and humidity control during the tobacco baking process. At the same time, data is acquired from the tobacco that has completed the three stages after control, and the quality of the finished product of the tobacco is determined. In this way, whether the temperature and humidity adjustment during the tobacco baking is effective is understood, thereby achieving efficient and intelligent tobacco baking guarantees, improving tobacco baking quality and efficiency, reducing the probability of tobacco quality problems, and improving the benefits generated by the quality of herb baking.

[0017] 2. By analyzing the initial baking parameter range of tobacco during the yellowing period and judging whether the initial baking parameters of tobacco during the yellowing period need to be adjusted, efficient monitoring of tobacco baking during the yellowing period can be achieved, forming an effective guarantee for tobacco baking.

[0018] 3. Monitor the baking status of tobacco during the color-fixing period, and then analyze and adjust the parameters of tobacco during the color-fixing period to achieve accurate color setting of tobacco, avoiding the problem of uneven tobacco color caused by inaccurate temperature and humidity control.

[0019] 4. Monitor tobacco during the drying period, obtain tobacco drying images during the drying period, analyze the temperature and humidity control during the drying period, and achieve effective control of the tobacco during the drying period to further ensure the quality of the tobacco during the drying period.

[0020] 5. Obtain the physical appearance data of the tobacco during the baking process, and then determine the quality of the finished tobacco product, thereby achieving efficient and intelligent tobacco baking guarantees, improving tobacco baking quality and efficiency, and reducing the probability of tobacco quality problems. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0022] Figure 1 This is a schematic diagram of the system structure connection of the present invention.

[0023] Figure 2 The figure is a schematic flow chart of the steps for implementing the method of the present invention. DETAILED DESCRIPTION

[0024] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments 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 are within the scope of protection of the present invention.

[0025] See also Figure 1 As shown, the intelligent temperature and humidity control system for the tobacco baking process includes a tobacco yellowing period monitoring module, a tobacco color fixing period monitoring module, a tobacco dry period monitoring module, a tobacco baking evaluation module, an early warning terminal and a database.

[0026] The tobacco yellowing period monitoring module is connected to the tobacco color fixing period monitoring module and the database respectively. The tobacco color fixing period monitoring module is connected to the tobacco dry period monitoring module. The tobacco baking evaluation module is connected to the early warning terminal and the database respectively.

[0027] The tobacco yellowing period monitoring module is used to analyze the tobacco's initial baking parameter range corresponding to the yellowing period according to the type of tobacco baking, and perform baking monitoring on the tobacco during the yellowing period to determine whether the initial baking parameters of the tobacco corresponding to the yellowing period need to be adjusted.

[0028] It should be noted that based on the type of tobacco, each tobacco type is matched from the database, and the baking process corresponding to the same tobacco type is used as the current tobacco baking process, namely the yellowing period, color fixing period and dry tendon period.

[0029] It should be noted that the tobacco baking type is set by tobacco manufacturers, and the corresponding baking manufacturing is carried out; the various historical baking types include flue-cured tobacco, white tobacco and spice tobacco.

[0030] In a specific embodiment, the analysis obtains the initial baking parameter interval of the tobacco corresponding to the yellowing period. The specific analysis process is as follows: the baking type corresponding to the tobacco is compared with the historical baking types corresponding to the tobacco stored in the database. If the baking type corresponding to the tobacco is the same as a historical baking type corresponding to the tobacco stored in the database, the initial parameter interval of the tobacco corresponding to the historical baking type stored in the database during baking is used as the initial baking parameter interval of the tobacco corresponding to the yellowing period.

[0031] In a specific embodiment, the determination of whether the initial baking parameters of the tobacco corresponding to the yellowing period need to be adjusted is carried out in the following specific judgment process: Q1. The tobacco is baked by selecting parameters within the initial baking parameter range, and then real-time monitoring of the tobacco during the yellowing period is performed, and the yellowing speed of the tobacco during baking is preset, and a baking image of the tobacco corresponding to the yellowing period is obtained at the same time. If the yellowing speed corresponding to the tobacco in the yellowing period during baking is inconsistent with the preset yellowing speed, it is determined that the initial baking parameters of the tobacco corresponding to the yellowing period need to be changed and adjusted, or if it is extracted from the baking image of the tobacco corresponding to the yellowing period that the tobacco leaf surface is larger than the initial tobacco leaf surface and the tobacco is adhered to the grill, it is determined that the initial baking parameters of the tobacco corresponding to the yellowing period need to be changed and adjusted. If the yellowing speed corresponding to the tobacco is consistent with the preset and there is no expansion of the tobacco leaf surface and tobacco adhesion, it is determined that the initial baking parameters of the tobacco corresponding to the yellowing period do not need to be changed and adjusted.

[0032] Q2. When the yellowing speed of the yellowing tobacco exceeds the set value, it is determined that the temperature of the yellowing tobacco during baking is too high, resulting in extremely rapid changes in the tobacco. The parameters selected during baking are used as the upper temperature limit, and the temperature of the yellowing tobacco is lowered based on the upper temperature limit. When the yellowing speed of the yellowing tobacco during baking is lower than the set value, it is determined that the temperature and humidity of the yellowing tobacco during baking are too low, resulting in the tobacco having no power to drive the change. The temperature parameters and humidity parameters selected during baking are used as the basic values ​​for parameter increase.

[0033] Q3. When the tobacco leaves in the yellowing stage swell or become larger or the tobacco sticks together, it is determined that the temperature and humidity during baking of the tobacco in the yellowing stage are too high. The temperature and humidity parameters selected during baking are used as the baking upper limits, and the baking parameters of the tobacco in the yellowing stage are lowered based on the upper limits to determine whether the initial baking parameters of the tobacco in the yellowing stage need to be adjusted.

[0034] It should be noted that if the initial baking parameter range is 32-42°C and the humidity is 75%-55% RH, and the temperature selected when starting baking is 40°C and the humidity is 60%, when the baking state of the tobacco in the yellowing period does not meet the set standards, the selected parameters will be used as the basis for adjusting the baking parameters of the tobacco in the yellowing period upward or downward; the yellowing speed is set by professional tobacco manufacturers as a reference value for observing whether the tobacco baking is qualified.

[0035] By analyzing the initial baking parameter range of tobacco during the yellowing period and judging whether the initial baking parameters of tobacco during the yellowing period need to be adjusted, efficient monitoring of tobacco baking during the yellowing period can be achieved, forming an effective guarantee for tobacco baking.

[0036] The tobacco color-fixing period monitoring module is used to monitor the tobacco's baking status during the color-fixing period after the tobacco has completed the yellowing period, and then analyze and obtain parameter adjustments for the tobacco during the color-fixing period.

[0037] In a specific embodiment, the monitoring of the baking state of the tobacco corresponding to the color fixing period, the specific monitoring process is as follows: when the tobacco is switched to the baking in the color fixing period, the temperature is increased and the humidity is decreased based on the preset intervals of the upper temperature limit and the lower humidity limit of the yellowing period corresponding to the tobacco, and then the baking of the tobacco corresponding to the color fixing period is performed, the temperature parameters are increased and the humidity parameters are decreased based on the preset interval time, and the state and tissue structure of the tobacco corresponding to the color fixing period are monitored. When the tobacco leaves turn from yellow to green or the mesophyll bulges during baking in the color fixing period, the increase of the temperature parameters and the decrease of the humidity parameters are stopped, and the corresponding temperature and humidity parameters at this time are recorded, indicating that the temperature and humidity parameters of the tobacco corresponding to the color fixing period are incorrectly controlled, and the parameters of the tobacco corresponding to the color fixing period need to be adjusted.

[0038] It should be noted that professional tobacco manufacturers preset the interval temperature increase value and humidity decrease value to meet the tobacco baking requirements of the corresponding color-fixing period, thereby ensuring that the tobacco is effectively fixed in color during the color-fixing period and laying a good foundation for subsequent baking.

[0039] In a specific embodiment, the analysis obtains the parameter adjustment of the tobacco corresponding to the color fixing period, and the specific analysis process is as follows: when the tobacco leaves show abnormal state during the color fixing period, it indicates that the temperature parameter of the tobacco corresponding to the color fixing period increases too high, the humidity increases too low, and the increasing interval is too short. Then, the previous temperature value of the increasing temperature parameter of the color fixing period is used as the upper limit of the temperature baking of the tobacco corresponding to the color fixing period, and the previous humidity value of the decreasing humidity parameter of the tobacco during the color fixing period is used as the lower limit of the humidity baking of the tobacco corresponding to the color fixing period. At the same time, the increasing interval is increased, and the temperature decrease and humidity increase of the tobacco corresponding to the color fixing period are executed according to the adjusted interval. The state of the tobacco leaves corresponding to the adjusted interval is observed. If there is no change, the interval time of the temperature decrease and humidity increase is superimposed again until the leaves of the tobacco corresponding to the color changing period do not turn green and bulge. The parameter adjustment of the tobacco corresponding to the color fixing period is obtained by this analysis.

[0040] It should be noted that if the initial tobacco baking corresponding to the color-fixing period is: the preset incremental interval time is half an hour to increase the temperature by one degree and the humidity is executed by 5% decrease, the increase in the incremental interval time is based on the original preset incremental interval time, thereby increasing the interval time, such as half an hour, one hour, one and a half hours, etc.; the previous temperature value and humidity value of the increasing temperature parameter and the decreasing humidity parameter are set as the temperature baking upper limit and the humidity baking lower limit because the current temperature has caused the leaves to be in an abnormal state, so it means that the current temperature and humidity are not suitable for the tobacco baking corresponding to the color-fixing period, so the value should be extrapolated forward.

[0041] Monitor the tobacco's baking status during the color-fixing period, and then analyze and adjust the tobacco parameters during the color-fixing period to achieve precise color setting of the tobacco, avoiding uneven tobacco color caused by inaccurate temperature and humidity control.

[0042] The tobacco drying period monitoring module is used to monitor the tobacco during the drying period after the tobacco has completed the color-fixing period, obtain tobacco drying images corresponding to the drying period, and analyze the temperature and humidity control of the tobacco during the drying period.

[0043] In a specific embodiment, the tobacco is baked during the dry rib period to obtain a tobacco baking image corresponding to the dry rib period. The specific acquisition process is as follows: when the tobacco is switched to baking during the dry rib period, the temperature and humidity are controlled based on the last temperature, humidity and interval duration of the tobacco baking during the color-fixing period. The temperature of the tobacco corresponding to the dry rib period is increased and the humidity is decreased in sequence according to the interval duration. After observing the changes in temperature and humidity at each interval duration, the tobacco baking image corresponding to the dry rib period is obtained, and the corresponding leaf features at each interval duration are extracted. If the tobacco veins appear dark red or the leaves are partially charcoal black, the temperature and humidity data of the current tobacco corresponding to the dry rib period are recorded.

[0044] In a specific embodiment, the analysis of the temperature and humidity control of tobacco corresponding to the dry gluten period is as follows: when abnormal veins or leaf characteristics appear during the baking of tobacco in the dry gluten period, it indicates that the temperature and humidity parameters of the tobacco corresponding to the dry gluten period do not meet the baking standards. Based on the current temperature and humidity of the tobacco corresponding to the dry gluten period, gradient control in terms of decreasing and increasing is performed, and corresponding ventilation is provided on the basis of humidity control to analyze the temperature and humidity control of the tobacco corresponding to the dry gluten period.

[0045] It should be noted that if the current temperature is c and the humidity is s, the gradient control is executed in a decreasing manner such as c-1, c-2, c-3, ..., ..., cn, and the gradient control is executed in an increasing manner such as s+1, s+2, s+3, ..., ..., s+m.

[0046] Monitor tobacco during the drying period, obtain tobacco drying images during the drying period, analyze the temperature and humidity control during the drying period, achieve effective control of the tobacco during the drying period, and further ensure the quality of the tobacco during the drying period.

[0047] The tobacco baking evaluation module is used to obtain the physical appearance data of the tobacco during the baking process, and then determine the quality of the finished product of the tobacco.

[0048] In a specific embodiment, the judgment obtains the quality of the finished product of the tobacco corresponding to the baking, and the specific judgment process is as follows: by obtaining the physical appearance data of the tobacco during the baking process, including the color tone and the number of brown spots on the leaf surface, and extracting the qualified standard interval of the tobacco corresponding to the baking product data from the database, and then analyzing the basic state value of the tobacco corresponding to the baking, when the basic state value of the tobacco corresponding to the baking is 1, it is determined that the quality of the finished product of the tobacco corresponding to the baking is qualified, and it is determined that the temperature and humidity control of the tobacco during different baking periods is effective. When the basic state value of the tobacco corresponding to the baking is -1, it is determined that the quality of the finished product of the tobacco corresponding to the baking is unqualified, and it is determined that the temperature and humidity control of the tobacco during different baking periods is invalid, and there is a problem with temperature and humidity control, thereby predicting the quality of the finished product of the tobacco corresponding to the baking.

[0049] It should be noted that the tobacco baking equipment has a camera function, which can monitor in real time the tobacco image during the tobacco baking process, and then extract the physical appearance data of the tobacco during the tobacco baking process from the tobacco image.

[0050] It should be noted that by analyzing the quality of the finished tobacco products, we can understand whether the temperature and humidity control measures corresponding to the current tobacco baking are correct and effective, so as to ensure the quality of tobacco baking.

[0051] In a specific embodiment, the analysis obtains the basic state value of tobacco corresponding to baking, and the specific analysis process is as follows: by calculating the formula: Where M is the basic state value of tobacco corresponding to baking, p is the number of finished product data, p∈[1,2], 1 and 2 are the color tone and the number of brown spots on the leaf surface respectively, p is the pth finished product data of the tobacco corresponding to the baking process, and χ′ is the qualified standard interval of the tobacco corresponding to the baking process data.

[0052] It should be noted that the qualified standard range is set by professional tobacco manufacturers; the qualified standard range is a reference value used to determine whether the temperature and humidity control of the current tobacco during the baking process is effective. If it is not effective, there will be quality problems with the tobacco quality. If it is effective, the quality of the tobacco is qualified; the color tone and the number of brown spots on the leaves included in the physical appearance data correspond to their respective qualified standard ranges, namely the qualified standard range for color tone and the qualified standard range for the number of brown spots on the leaves.

[0053] The physical appearance data of the tobacco during the baking process is obtained, and then the quality of the finished tobacco product is determined, thereby achieving efficient and intelligent tobacco baking guarantees, improving tobacco baking quality and efficiency, and reducing the probability of tobacco quality problems.

[0054] The database is used to store tobacco curing types, historical curing types, physical appearance data and qualified standard intervals.

[0055] The early warning terminal is used to issue an early warning when the quality of the finished tobacco product corresponding to the baking is unqualified.

[0056] See also Figure 2 As shown, the intelligent temperature and humidity control method for the tobacco baking process includes: F1, tobacco yellowing period monitoring: according to the type of tobacco baking, the initial baking parameter range of the tobacco corresponding to the yellowing period is analyzed and obtained, and the tobacco is baked during the yellowing period to determine whether the initial baking parameters of the tobacco corresponding to the yellowing period need to be adjusted.

[0057] F2. Monitoring of tobacco color-fixing period: After the tobacco has finished the yellowing period, monitor the tobacco's baking status during the color-fixing period, and then analyze and adjust the parameters for the color-fixing period.

[0058] F3. Tobacco Drying Period Monitoring: After the tobacco has completed the color-fixing period, the tobacco is monitored during the drying period. Tobacco drying images corresponding to the drying period are obtained, and the temperature and humidity control of the tobacco during the drying period is analyzed.

[0059] F4. Tobacco Curing Evaluation: Obtain the physical appearance data of the tobacco during the curing process, and then predict the quality of the finished tobacco product.

[0060] F5. Early warning: Issue an early warning when the quality of the tobacco product corresponding to the baking is unqualified.

[0061] The embodiment of the present invention monitors the temperature and humidity of tobacco during the yellowing, color-fixing and dry-stem stages, thereby achieving all-round monitoring of the tobacco during baking, and achieving precise control of the temperature and humidity of the tobacco at each stage, further ensuring effective control of the temperature and humidity during the tobacco baking process. At the same time, data is acquired from the tobacco that has completed the three stages after control, and the quality of the finished product of the tobacco baked is determined. In this way, whether the temperature and humidity adjustment during the tobacco baking is effective is understood, thereby achieving efficient and intelligent tobacco baking guarantees, improving tobacco baking quality and efficiency, reducing the probability of tobacco quality problems, and improving the benefits generated by the quality of herb baking.

[0062] The above content is merely an example and explanation of the concept of the present invention. Those skilled in the art may make various modifications or additions to the described specific embodiments or replace them in a similar manner. As long as they do not deviate from the concept of the invention or exceed the scope defined in this specification, they should all fall within the scope of protection of the present invention.

Claims

1. Intelligent temperature and humidity control system for tobacco baking process, characterized by: include: The tobacco yellowing period monitoring module is used to analyze the tobacco's initial baking parameter range corresponding to the yellowing period according to the type of tobacco baking, and perform baking monitoring on the tobacco during the yellowing period to determine whether the initial baking parameters of the tobacco corresponding to the yellowing period need to be adjusted; The tobacco color-fixing period monitoring module is used to monitor the tobacco's color-fixing period baking status after the tobacco has finished the yellowing period, and then analyze and obtain the parameter adjustment for the tobacco's color-fixing period; The tobacco drying period monitoring module is used to monitor the tobacco during the drying period after the tobacco has completed the color fixing period, obtain tobacco drying images corresponding to the drying period, and analyze the temperature and humidity control of the tobacco during the drying period; The tobacco baking evaluation module is used to obtain the physical appearance data of the tobacco during the baking process and then determine the quality of the finished tobacco product; The early warning terminal is used to issue an early warning when the quality of the finished tobacco product corresponding to the baking is unqualified.

2. The intelligent temperature and humidity control system for tobacco baking process according to claim 1, characterized in that: The analysis obtained the initial baking parameter range of tobacco corresponding to the yellowing period. The specific analysis process is as follows: The baking type corresponding to the tobacco is compared with the historical baking types corresponding to the tobacco stored in the database. If the baking type corresponding to the tobacco is the same as a historical baking type corresponding to the tobacco stored in the database, the initial parameter range of the tobacco corresponding to the historical baking type stored in the database during baking is used as the initial baking parameter range corresponding to the yellowing period of the tobacco.

3. The intelligent temperature and humidity control system for tobacco baking process according to claim 2, characterized in that: The specific judgment process for determining whether the initial baking parameters of tobacco corresponding to the yellowing period need to be adjusted is as follows: Q1. Tobacco is baked by selecting parameters within the initial baking parameter range, and then real-time monitoring of the tobacco during baking in the yellowing period is performed, and the yellowing speed of the tobacco during baking is preset, and a baking image of the tobacco during the yellowing period is obtained. If the yellowing speed of the tobacco during the yellowing period is inconsistent with the preset yellowing speed, it is determined that the initial baking parameters of the tobacco during the yellowing period need to be changed and adjusted; or if it is extracted from the baking image of the tobacco during the yellowing period that the tobacco leaf surface is larger than the initial tobacco leaf surface and the tobacco is adhered to the grill, it is determined that the initial baking parameters of the tobacco during the yellowing period need to be changed and adjusted; if the yellowing speed of the tobacco is consistent with the preset and there is no expansion of the tobacco leaf surface or adhesion of the tobacco, it is determined that the initial baking parameters of the tobacco during the yellowing period do not need to be changed and adjusted; Q2. When the yellowing speed of tobacco in the yellowing stage exceeds the set value, it is determined that the temperature during baking of the tobacco in the yellowing stage is too high, causing the tobacco to change rapidly. The parameters selected during baking are used as the upper temperature limit, and the temperature of the tobacco in the yellowing stage is adjusted downward based on the upper temperature limit. When the yellowing speed of tobacco in the yellowing stage is lower than the set value, it is determined that the temperature and humidity during baking of the tobacco in the yellowing stage are too low, resulting in the tobacco having no power to drive the change. The temperature and humidity parameters selected during baking are used as the basic values ​​for parameter adjustment. Q3. When the tobacco leaves in the yellowing stage swell or become larger or the tobacco sticks together, it is determined that the temperature and humidity during baking of the tobacco in the yellowing stage are too high. The temperature and humidity parameters selected during baking are used as the baking upper limits, and the baking parameters of the tobacco in the yellowing stage are lowered based on the upper limits to determine whether the initial baking parameters of the tobacco in the yellowing stage need to be adjusted.

4. The intelligent temperature and humidity control system for tobacco baking process according to claim 3, characterized in that: The specific monitoring process of monitoring the baking status of tobacco corresponding to the color fixing period is as follows: When the tobacco is switched to baking in the color-fixing period, the temperature will be increased and the humidity will be decreased based on the preset intervals of the upper temperature limit and lower humidity limit of the yellowing period of the tobacco, and then the tobacco will be baked in the corresponding color-fixing period. The temperature parameters will be increased and the humidity parameters will be decreased based on the preset interval time, and the state and tissue structure of the tobacco in the color-fixing period will be monitored. When the tobacco leaves turn from yellow to green or the mesophyll bulges during baking in the color-fixing period, the temperature parameters will be stopped from being increased and the humidity parameters will be stopped from being decreased, and the corresponding temperature and humidity parameters at this time will be recorded. This indicates that the temperature and humidity parameters of the tobacco in the color-fixing period are incorrectly controlled, and the parameters of the tobacco in the color-fixing period need to be adjusted.

5. The intelligent temperature and humidity control system for tobacco baking process according to claim 4, characterized in that: The analysis results in parameter adjustment for the tobacco color-fixing period. The specific analysis process is as follows: When tobacco leaves are in abnormal condition during the color-fixing period, it indicates that the temperature parameter of the tobacco corresponding to the color-fixing period increases too high, the humidity increases too low, and the increasing interval is too short. Therefore, the previous temperature value of the increasing temperature parameter of the color-fixing period is used as the upper limit of the temperature baking of the tobacco corresponding to the color-fixing period, and the previous humidity value of the decreasing humidity parameter of the tobacco during the color-fixing period is used as the lower limit of the humidity baking of the tobacco corresponding to the color-fixing period. At the same time, the increasing interval is increased, and the temperature decrease and humidity increase of the tobacco corresponding to the color-fixing period are carried out according to the adjusted interval. The state of the tobacco leaves corresponding to the adjusted interval is observed. If there is no change, the interval lengths of the temperature decrease and humidity increase are superimposed again until the leaves of the tobacco corresponding to the color-fixing period do not turn green and bulge. The parameter adjustment of the tobacco corresponding to the color-fixing period is obtained through analysis.

6. The intelligent temperature and humidity control system for tobacco baking process according to claim 5, characterized in that: The tobacco baking monitoring during the dry rib period is performed to obtain tobacco baking images corresponding to the dry rib period. The specific acquisition process is as follows: When the tobacco is switched to the drying period, the temperature and humidity are controlled based on the last temperature, humidity and interval time of the tobacco during the color-fixing period. The temperature of the tobacco during the drying period is increased and the humidity is decreased in sequence according to the interval time. After observing the changes in temperature and humidity at each interval time, the tobacco drying period image is obtained, and the leaf features corresponding to each interval time are extracted. If the tobacco veins appear dark red or the leaves are partially charcoal black, the temperature and humidity data of the current tobacco during the drying period are recorded.

7. The intelligent temperature and humidity control system for tobacco baking process according to claim 6, characterized in that: The analysis of the temperature and humidity control of tobacco during the dry period is as follows: When abnormal veins or leaf characteristics appear during tobacco baking in the dry gluten period, it indicates that the temperature and humidity parameters of the tobacco corresponding to the dry gluten period do not meet the baking standards. Based on the current temperature and humidity of the tobacco corresponding to the dry gluten period, gradient control in terms of decreasing and increasing is performed, and corresponding ventilation is provided on the basis of humidity control to analyze the temperature and humidity control of the tobacco corresponding to the dry gluten period.

8. The intelligent temperature and humidity control system for tobacco baking process according to claim 7, characterized in that: The determination is to obtain the quality of the finished product corresponding to the baking of tobacco, and the specific determination process is as follows: By obtaining the physical appearance data of tobacco during the baking process, including color tone and the number of brown spots on the leaf surface, and extracting the qualified standard range of tobacco baking product data from the database, the basic state value of tobacco baking is obtained by analysis. When the basic state value of tobacco baking is 1, it is determined that the quality of the tobacco baking product is qualified, and the temperature and humidity control of tobacco during different baking periods is effective. When the basic state value of tobacco baking is -1, it is determined that the quality of the tobacco baking product is unqualified, and the temperature and humidity control of tobacco during different baking periods is invalid, and there is a problem with temperature and humidity control. In this way, the quality of the tobacco baking product can be predicted.

9. The intelligent temperature and humidity control system for tobacco baking process according to claim 8, characterized in that: The analysis obtains the basic state value of tobacco corresponding to baking, and the specific analysis process is as follows: By calculation formula: Where M is the basic state value of tobacco corresponding to baking, p is the number of finished product data, p∈[1,2], 1 and 2 are the color tone and the number of brown spots on the leaf surface respectively, p is the pth finished product data of the tobacco corresponding to the baking process, and χ′ is the qualified standard interval of the tobacco corresponding to the baking process data.

10. The method for intelligently controlling temperature and humidity in the tobacco baking process according to any one of claims 1 to 9, characterized in that: include: F1. Tobacco Yellowing Period Monitoring: Based on the tobacco curing type, the initial curing parameter range corresponding to the yellowing period is analyzed and monitored during the tobacco yellowing period to determine whether the initial curing parameters for the yellowing period need to be adjusted. F2. Tobacco color-fixing period monitoring: After the tobacco has finished the yellowing period, the tobacco's baking status during the color-fixing period is monitored, and the parameters for the color-fixing period are analyzed and adjusted accordingly. F3. Tobacco Drying Stage Monitoring: After the tobacco has completed the color-fixing stage, the tobacco is monitored during the drying stage. Tobacco drying images of the tobacco are acquired, and the temperature and humidity control during the drying stage are analyzed. F4. Tobacco Curing Evaluation: Obtain physical appearance data of tobacco during the curing process to predict the quality of the finished product. F5. Early warning: Issue an early warning when the quality of the tobacco product corresponding to the baking is unqualified.

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