Loosening and dampening machine control method, system, equipment and medium

Abstract

The invention provides a method, a system and equipment for controlling a loosening and damping machine and a medium. The method comprises the following steps: acquiring incoming material characteristics; the circulating air speed is adjusted based on the incoming material characteristics so that the incoming materials can reach the outlet material temperature; and adjusting the process gas set temperature of the loosening and dampening machine based on the outlet material temperature feedback. According to the loose damping machine control method, system and equipment and the medium, the intelligent recognition technology is combined, incoming material characteristics are pre-judged through weight and vision, the air speed is controlled according to the incoming material characteristics, the heating requirement for poor material characteristics is met, meanwhile, the temperature feedback control technology is adopted, the outlet material temperature problem is solved, and closed-loop control over quality index points is constructed. In addition, feed-forward incoming material collection control can be provided according to the weight according to the incoming material characteristics.

Description

Technical Field

[0001] The present application belongs to the technical field of cigarette processing, and relates to a control method, system, equipment and medium of a loosening and rehumidifying machine. Background Art

[0002] The loosening and rehumidifying machine is an important equipment in the silk thread making process. It can loosen the leaves and increase the moisture content and temperature of the sliced ​​tobacco, which has the effect of improving the processing resistance and sensory quality of the tobacco leaves. Among them, the hot air temperature is an important process indicator of the loosening and rehumidifying process, and is also a key factor in ensuring the production quality of tobacco leaves. The fluctuation of hot air temperature will affect the re-penetration rate, outlet moisture and temperature, and directly affect the processing and sensory quality of tobacco leaves.

[0003] At present, the hot air temperature regulation of the loose rehumidification machine mainly relies on the heat exchanger installed in the hot air duct to heat the circulating air for temperature control. The principle of automatic regulation is: the platinum thermal resistor installed on the air duct measures the temperature in the pipeline, and then transmits the temperature signal to the temperature transmitter in the electric control cabinet. After the temperature transmitter compares the temperature information with the set value, it transmits the electrical signal to the electrical converter, which is then converted into a gas signal, and then controls the opening of the pneumatic diaphragm regulating valve on the steam pipeline to adjust the amount of steam entering the heat exchanger to achieve the purpose of temperature control.

[0004] However, this adjustment mode cannot meet the heating requirements according to the characteristics of the incoming materials. It can only directly adjust the amount of steam entering the heat exchanger based on experience, which in turn affects the loosening and rehumidification treatment effect. In addition, it is impossible to perform closed-loop temperature control, and the temperature fluctuates greatly during the adjustment process, which can easily have a negative impact on the incoming material processing. In addition, the current loosening and rehumidification machine cannot provide feedforward incoming material collection control. Summary of the invention

[0005] The present application provides a loose rehumidification machine control method, system, equipment and medium, which are used to solve the technical problem that the prior art lacks a control method for the loose rehumidification machine to achieve different heating requirements of material characteristics based on adjusting wind speed and temperature closed-loop control.

[0006] In a first aspect, the present application provides a loose rehumidification machine control method, comprising obtaining incoming material characteristics; adjusting the circulation wind speed based on the incoming material characteristics so that the incoming material reaches an outlet material temperature; and adjusting the process gas set temperature of the loose rehumidification machine based on the outlet material temperature feedback.

[0007] In an implementation of the first aspect, obtaining the characteristics of the incoming material includes: identifying the incoming material as tobacco leaves or artificial tobacco leaves based on weight and pixels.

[0008] In an implementation of the first aspect, the weight of the incoming material is obtained based on a static scale to preliminarily identify the incoming material as tobacco leaves or artificial tobacco leaves; and the edge pixels of the incoming material are obtained based on a pixel recognition sensor to ultimately identify the incoming material as tobacco leaves or artificial tobacco leaves.

[0009] In an implementation of the first aspect, adjusting the circulating wind speed based on the incoming material characteristics so that the incoming material reaches the outlet material temperature includes: adjusting the circulating wind speed based on the outlet standard temperature of the tobacco leaves or the artificial tobacco leaves so that the incoming material reaches the outlet material temperature.

[0010] In an implementation of the first aspect, adjusting the circulating air speed based on the outlet standard temperature of the tobacco leaves or the artificial tobacco leaves includes: obtaining the compensation temperature of the tobacco leaves or the artificial tobacco leaves based on the outlet standard temperature; and adjusting the circulating air speed based on the compensation temperature and the process gas set temperature.

[0011] In an implementation of the first aspect, adjusting the process gas set temperature of the loose rehumidifier based on the outlet material temperature feedback includes: proportionally controlling the process gas set temperature based on the outlet material temperature and the outlet standard temperature.

[0012] In an implementation manner of the first aspect, feedforward incoming material collection is controlled based on the incoming material characteristics.

[0013] In the second aspect, the present application provides a loose rehumidification machine control system, including an identification module for identifying incoming materials based on weight and pixels; a wind speed adjustment module for adjusting the circulating wind speed based on the incoming materials so that the incoming materials reach the outlet material temperature; and a feedback adjustment module for adjusting the process gas set temperature of the loose rehumidification machine based on the outlet material temperature feedback.

[0014] In a third aspect, the present application provides a computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, implements the loose rehumidification machine control method described in the first aspect of the present application.

[0015] In a fourth aspect, the present application provides an electronic device comprising: a memory configured to store a computer program; and a processor communicatively connected to the memory, the processor being configured to call the computer program to execute the loose rehumidification machine control method described in the first aspect of the present application.

[0016] The method, system, device and medium for controlling a loose rehumidification machine described in the present application have the following beneficial effects: combining intelligent recognition technology, predicting the characteristics of incoming materials by weight and vision, and controlling the wind speed to achieve the heating requirements of materials with poor characteristics, while using temperature feedback control technology to solve the problem of outlet material temperature and build a closed-loop control of quality index points. In addition, the present application can also provide feedforward incoming material collection control according to weights based on incoming material characteristics. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 Shown is a flow chart of a loosening and moistening machine control method described in an embodiment of the present application.

[0018] Figure 2 Shown is a flow chart of a loosening and moistening machine control method described in an embodiment of the present application.

[0019] Figure 3 Shown is a schematic diagram of sampling tobacco and artificial tobacco according to an embodiment of the present application.

[0020] Figure 4 Shown is a schematic diagram of pixel identification of tobacco according to an embodiment of the present application.

[0021] Figure 5 Shown is a schematic diagram of pixel identification of artificial tobacco according to an embodiment of the present application.

[0022] Figure 6 Shown is a flow chart of a loosening and moistening machine control method described in an embodiment of the present application.

[0023] Figure 7 Shown is a flow chart of a loosening and moistening machine control method described in an embodiment of the present application.

[0024] Figure 8 Shown is a schematic diagram of the architecture of a loose rehumidification machine control system according to an embodiment of the present application.

[0025] Fig. 9 Shown is a schematic diagram of the structure of an electronic device described in an embodiment of the present application. DETAILED DESCRIPTION

[0026] The following describes the embodiments of the present application through specific examples, and those skilled in the art can easily understand other advantages and effects of the present application from the contents disclosed in this specification. The present application can also be implemented or applied through other different specific embodiments, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present application. It should be noted that the following embodiments and features in the embodiments can be combined with each other without conflict.

[0027] It should be noted that the illustrations provided in the following embodiments are only schematic illustrations of the basic concept of the present application, and thus the drawings only show components related to the present application rather than being drawn according to the number, shape and size of components in actual implementation. In actual implementation, the type, quantity and proportion of each component may be changed at will, and the component layout may also be more complicated.

[0028] The embodiment of the present application provides a control method, system, device and medium for a loose rehumidification machine, which combines intelligent recognition technology, predicts the characteristics of incoming materials by weight and vision, and controls the wind speed to achieve the heating requirements of materials with poor characteristics. At the same time, the temperature feedback control technology is adopted to solve the problem of outlet material temperature and build a closed-loop control of quality index points. In addition, the present application can also provide feedforward incoming material collection control according to the weight based on the characteristics of the incoming materials.

[0029] See also Figure 1 As shown, a loosening and moistening machine control method provided by an embodiment of the present application includes the following steps S1 to S3:

[0030] S1: Obtain incoming material characteristics.

[0031] Specifically, in the slicing production process, the material characteristics of the incoming materials are identified by weight and pixels, that is, the incoming materials are judged to be tobacco leaves or artificial tobacco leaves based on weight and pixels.

[0032] Specifically, Figure 2 As shown, step S1 includes steps S11 to S12.

[0033] S11: Obtain the weight of the incoming material based on a static scale to preliminarily identify whether the incoming material is tobacco leaf or artificial tobacco leaf.

[0034] Specifically, the weight of tobacco leaves and artificial tobacco leaves is different. After the incoming material stops on the static scale through photoelectric signal detection, the weight of the outgoing material can be obtained to determine whether it is tobacco leaves or artificial tobacco leaves.

[0035] Specifically, the heavier ones are artificial tobacco leaves.

[0036] S12: Acquire the edge pixels of the incoming material based on the pixel recognition sensor to finally identify the incoming material as tobacco leaves or artificial tobacco leaves.

[0037] Specifically, tobacco leaves and artificial tobacco leaves have a large color gamut difference. Therefore, the weight judgment of step S11 can be compensated by edge pixel recognition in step S12 to make up for the error, making the incoming material judgment more accurate and providing a basis for subsequent loosening and moisture regaining processing.

[0038] Specifically, Figures 3 to 5As shown in the figure, under the same area, the sampled tobacco leaves (left) and artificial tobacco leaves (right) were found to have large color differences, whether they were the front or back or the tobacco leaves of a cigarette pack. According to the chromaticity comparison, the difference reached 23%. The chromaticity of artificial tobacco leaves was more uniform, with a chromaticity difference of 4%.

[0039] Therefore, the pixel recognition sensor can accurately recognize tobacco leaves and artificial tobacco leaves through the learning calculation of the edge pixel calculator. The edge pixel recognition records of the two are shown in Table 1.

[0040] Table 1 Pixel recognition sensor test record

[0041]

[0042] It can be seen that in actual identification of tobacco leaves, the edge pixels can reach a value of more than 25,000. When identifying the edge pixels of artificial tobacco leaves, the values ​​are all below 20,000. Therefore, this method can identify tobacco leaves and artificial tobacco leaves with a high degree of accuracy.

[0043] It should be noted that the pixel recognition sensor may be any sensor available on the market that can perform edge pixel calculation, and no limitation is imposed on it herein.

[0044] It should be noted that step S1 uses the front-end intelligent recognition technology in the slicing production link, and adopts the cascade recognition method of weight and pixel recognition to improve the accuracy of identifying incoming materials, which will provide a basis for the research on feedforward detection of cigarette packages. At the same time, it also realizes the ability to provide feedforward incoming material collection control according to the weight based on the characteristics of the incoming materials, which is conducive to the standardization and intelligence of cigarette production and processing.

[0045] S2: adjusting the circulation wind speed based on the incoming material characteristics so that the incoming material reaches the outlet material temperature.

[0046] Specifically, the circulating wind speed is adjusted based on the outlet standard temperature of the tobacco leaves or the artificial tobacco leaves so that the incoming materials reach the outlet material temperature.

[0047] Specifically, in the main body control of the loosening and moistening machine, step S2 realizes the response to the feedforward by adjusting the circulating air damper, thereby ensuring the production temperature and better loosening and moistening the incoming materials.

[0048] Specifically, Figure 6 As shown, step S2 includes steps S21 to S22.

[0049] S21: obtaining a compensation temperature of the tobacco leaf or the artificial tobacco leaf based on the outlet standard temperature.

[0050] Specifically, when tobacco leaves or artificial tobacco leaves enter the drum of the loosening and rehumidifying machine, the temperature meter on the hot air duct detects the current temperature, and the compensation temperature of the tobacco leaves or artificial tobacco leaves can be obtained according to the current temperature and the outlet standard temperature. That is, compensation temperature = outlet standard temperature - current temperature

[0051] S22: Adjusting the circulating air speed based on the compensation temperature and the set temperature of the process gas.

[0052] Specifically, the circulating wind speed is adjusted according to the compensation temperature and the set temperature of the process gas (the temperature of the hot air input to the drum for loosening and rehumidification treatment) to control the input hot air and achieve heating of the incoming material based on the wind speed.

[0053] Specifically, the adjustment amount of the air door of the loose rehumidification machine is calculated, and the wind speed is adjusted by adjusting the air door to achieve the heating requirement of the incoming materials.

[0054] Specifically, the upper limit of the circulating damper of the loose rehumidifier is 12.5%, and the lower limit is 17.5%. That is, the influence range of the circulating damper on the temperature increase is between 12.5% ​​and 17.5% of the current temperature.

[0055] Preferably, the influence range of the circulating air door on the temperature is determined to be between 6.25% and 8.75%. At this time, the influence value of the circulating wind speed is converted according to the compensation temperature of the tobacco leaves or artificial tobacco leaves, and the circulating air door controller is controlled accordingly to adjust the wind speed.

[0056] It should be noted that the process gas set temperature is set according to the host computer.

[0057] S3: adjusting the set temperature of the process gas of the loose rehumidification machine based on the outlet material temperature feedback.

[0058] Specifically, the set temperature of the process gas is proportionally controlled based on the outlet material temperature and the outlet standard temperature.

[0059] Specifically, the outlet material temperature of the loose rehumidification machine is measured by an outlet temperature sensor, and the temperature deviation value is obtained based on the outlet material temperature and the outlet standard temperature.

[0060] Temperature deviation value = outlet standard temperature - outlet material temperature

[0061] Specifically, the correction ratio of the temperature feedback adjustment amount to the process gas temperature controller is set to 10%. The proportional calculation is performed according to the temperature deviation value and fed back to the process gas temperature controller. The closed-loop control of the temperature is achieved by modifying the PLC feedback program.

[0062] Temperature feedback proportional adjustment amount = temperature deviation value x 10%

[0063] like Figure 7 As shown, the overall flow chart of the loose rehumidification machine control method provided by this application is shown. According to the test of the loose rehumidification machine in the actual workshop, the CPK value collected by the test batch SPCD system was 3.44, the PPK value was 2.05, and the standard deviation SD was 0.4841. According to statistics from November 15 to November 29, 2022, 97 batches of CPK were produced with an average of 3.23, an average of 1.83, and a standard deviation of 0.5465. Improve process quality indicators by 30%. PPK deviation SD is reduced by 20%.

[0064] Therefore, the control method of the loose rehumidification machine provided by the present application combines intelligent recognition technology, predicts the characteristics of the incoming materials by weight and vision, and controls the wind speed to achieve the heating requirements of the materials with poor characteristics. At the same time, the temperature feedback control technology is adopted to solve the problem of the temperature of the outlet materials and build a closed-loop control of the quality index point. In addition, the present application can also provide feedforward incoming material collection control according to the weight based on the characteristics of the incoming materials.

[0065] The protection scope of the method for controlling the loosening and rehumidifying machine described in the embodiment of the present application is not limited to the execution order of the steps listed in the present embodiment. All solutions implemented by adding, reducing or replacing steps in the prior art based on the principles of the present application are included in the protection scope of the present application.

[0066] The embodiment of the present application also provides a loose moisture regaining machine control system, which can implement the loose moisture regaining machine control method described in the present application, but the implementation device of the loose moisture regaining machine control method described in the present application includes but is not limited to the structure of the loose moisture regaining machine control system listed in the present embodiment. All structural deformations and replacements of the prior art made according to the principles of the present application are included in the protection scope of the present application.

[0067] like Figure 8 As shown, the loose dehumidification machine control system provided in this embodiment includes an identification module 10 , a wind speed adjustment module 20 , and a feedback adjustment module 30 .

[0068] The identification module 10 is used to identify incoming materials based on weight and pixels.

[0069] The wind speed regulating module 20 is used to regulate the circulating wind speed based on the incoming material so that the incoming material reaches the outlet material temperature;

[0070] The feedback adjustment module 30 is used to adjust the set temperature of the process gas of the loose rehumidification machine based on the outlet material temperature feedback.

[0071] Specifically, the identification module 10 identifies the characteristics of the incoming materials through a static scale and a pixel identification sensor, and after determining that it is tobacco leaves or artificial tobacco leaves, it is sent to the loosening and rehumidification machine for loosening and rehumidification processing. At this time, the wind speed adjustment module 20 adjusts the circulation damper in the loosening and rehumidification machine based on the characteristics of the incoming materials, and controls the process gas input into the drum by adjusting the wind speed, so as to achieve the heating requirements based on the different characteristics of the incoming materials. After the loosening and rehumidification machine is processed, the feedback adjustment module 30 measures the outlet material temperature through the outlet temperature sensor, and proportionally controls the set temperature of the process gas based on the outlet standard temperature, so as to construct a closed-loop control of the quality index point.

[0072] The present application also provides an electronic device. Fig. 9 As shown, this embodiment provides an electronic device 90, which includes: a memory 901, configured to store a computer program; and a processor 902, which is communicatively connected to the memory 901 and configured to call the computer program to execute the method for controlling the loose rehumidifying machine.

[0073] The memory 901 includes: ROM (Read Only Memory image), RAM (Random Access Memory), a disk, a USB flash drive, a memory card or an optical disk, and other media that can store program codes.

[0074] The processor 902 is connected to the memory 901 and is used to execute the computer program stored in the memory 901 so that the electronic device executes the above-mentioned method for controlling the loosening and moisturizing machine.

[0075] Preferably, the processor 902 can be a general-purpose processor, including a central processing unit (CPU), a network processor (NP), etc.; it can also be a digital signal processor (DSP), an application specific integrated circuit (ASIC), a field programmable gate array (FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components.

[0076] In the several embodiments provided in the present application, it should be understood that the disclosed system, device or method can be implemented in other ways. For example, the device embodiments described above are only schematic. For example, the division of modules / units is only a logical function division. There may be other division methods in actual implementation, such as multiple modules or units can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be an indirect coupling or communication connection through some interfaces, devices or modules or units, which can be electrical, mechanical or other forms.

[0077] The modules / units described as separate components may or may not be physically separated, and the components displayed as modules / units may or may not be physical modules, that is, they may be located in one place, or they may be distributed on multiple network units. Some or all of the modules / units may be selected according to actual needs to achieve the purpose of the embodiments of the present application. For example, the functional modules / units in the various embodiments of the present application may be integrated into one processing module, or each module / unit may exist physically separately, or two or more modules / units may be integrated into one module / unit.

[0078] Those of ordinary skill in the art should further appreciate that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, computer software, or a combination of the two. In order to clearly illustrate the interchangeability of hardware and software, the composition and steps of each example have been generally described in the above description according to function. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Professional and technical personnel can use different methods to implement the described functions for each specific application, but such implementation should not be considered to be beyond the scope of this application.

[0079] The present application embodiment also provides a computer-readable storage medium. A person of ordinary skill in the art can understand that all or part of the steps in the method for implementing the above embodiment can be completed by instructing the processor through a program, and the program can be stored in a computer-readable storage medium, and the storage medium is a non-transitory medium, such as a random access memory, a read-only memory, a flash memory, a hard disk, a solid-state hard disk, a magnetic tape, a floppy disk, an optical disc, and any combination thereof. The above storage medium can be any available medium that can be accessed by a computer or a data storage device such as a server or a data center that includes one or more available media integrated. The available medium can be a magnetic medium (e.g., a floppy disk, a hard disk, a tape), an optical medium (e.g., a digital video disc (DVD)), or a semiconductor medium (e.g., a solid-state disk (SSD)), etc.

[0080] The present application embodiment may also provide a computer program product, the computer program product including one or more computer instructions. When the computer instructions are loaded and executed on a computing device, the process or function described in the embodiment of the present application is generated in whole or in part. The computer instructions may be stored in a computer-readable storage medium, or transmitted from one computer-readable storage medium to another computer-readable storage medium, for example, the computer instructions may be transmitted from a website site, computer or data center by wired (e.g., coaxial cable, optical fiber, digital subscriber line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.) mode to another website site, computer or data center.

[0081] When the computer program product is executed by a computer, the computer executes the method described in the above method embodiment. The computer program product may be a software installation package, and when the above method is required, the computer program product may be downloaded and executed on a computer.

[0082] The descriptions of the processes or structures corresponding to the above-mentioned figures have different emphases. For parts that are not described in detail in a certain process or structure, please refer to the relevant descriptions of other processes or structures.

[0083] The above embodiments are merely illustrative of the principles and effects of the present application and are not intended to limit the present application. Anyone familiar with the technology may modify or change the above embodiments without violating the spirit and scope of the present application. Therefore, all equivalent modifications or changes made by a person of ordinary skill in the art without departing from the spirit and technical ideas disclosed in the present application shall still be covered by the claims of the present application.

Claims

1. A loose rehumidification machine control method, characterized in that: include: Obtaining incoming material characteristics; Adjusting the circulation wind speed based on the incoming material characteristics so that the incoming material reaches the outlet material temperature; The process gas set temperature of the loose rehumidifier is adjusted based on the outlet material temperature feedback.

2. The control method of the loosening and moistening machine according to claim 1, characterized in that: The characteristics of incoming materials include: Identify incoming material as tobacco leaf or artificial leaf based on weight and pixels.

3. The control method of the loosening and moistening machine according to claim 2, characterized in that: include: Obtaining the weight of the incoming material based on a static scale to preliminarily identify the incoming material as the tobacco leaf or the artificial tobacco leaf; Based on the pixel recognition sensor, the edge pixels of the incoming material are obtained to finally identify the incoming material as the tobacco leaf or the artificial tobacco leaf.

4. The control method of the loosening and moistening machine according to claim 2, characterized in that: Adjusting the circulating wind speed based on the incoming material characteristics so that the incoming material reaches the outlet material temperature includes: The circulating wind speed is adjusted based on the outlet standard temperature of the tobacco leaves or the artificial tobacco leaves so that the incoming materials reach the outlet material temperature.

5. The control method of the loosening and moistening machine according to claim 4 is characterized in that: Adjusting the circulating wind speed based on the outlet standard temperature of the tobacco leaves or the artificial tobacco leaves includes: Obtaining a compensation temperature of the tobacco leaf or the artificial tobacco leaf based on the outlet standard temperature; The circulating air speed is adjusted based on the compensation temperature and the process gas set temperature.

6. The control method of the loosening and moistening machine according to claim 4, characterized in that: Adjusting the process gas set temperature of the loose rehumidifier based on the outlet material temperature feedback includes: The process gas set temperature is proportionally controlled based on the outlet material temperature and the outlet standard temperature.

7. The control method of the loosening and moistening machine according to claim 1 is further characterized in that: Feedforward incoming material collection is controlled based on the incoming material characteristics.

8. A control system for a loose rehumidification machine, characterized in that: include: Identification module, used to obtain the characteristics of incoming materials; A wind speed adjustment module, used for adjusting the circulating wind speed based on the incoming material characteristics so that the incoming material reaches the outlet material temperature; A feedback regulation module is used to adjust the set temperature of the process gas of the loose rehumidification machine based on the outlet material temperature feedback.

9. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the loose moisture conditioning machine control method according to any one of claims 1 to 7 is implemented.

10. An electronic device, characterized in that: The device comprises: A memory storing a computer program; A processor is communicatively connected to the memory, and executes the loose rehumidification machine control method described in any one of claims 1 to 7 when calling the computer program.

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