Tobacco shred outlet flow control method, device and equipment of tobacco shred storage cabinet and medium

Abstract

The invention discloses a tobacco shred outlet flow control method, device and equipment of a tobacco shred storage cabinet and a medium. The method comprises the steps that in response to shred discharging starting operation for a target tobacco shred storage cabinet, a bottom belt motor of the target tobacco shred storage cabinet is started based on the initial frequency; the real-time discharging flow of the target batch of tobacco shreds in the target tobacco shred storage cabinet driven by a discharging bottom belt of the bottom belt motor with the initial frequency is determined; according to the real-time tobacco shred outlet flow, the predicted feeding flow of a next process carrier corresponding to the target tobacco shred storage cabinet is determined; and a feeding flow threshold value is determined, the initial frequency of the bottom belt motor is adjusted according to the predicted feeding flow and the feeding flow threshold value, and the target frequency is obtained. Based on the technical scheme of the invention, cut tobacco shortage or blockage in the cigarette production process can be effectively avoided, and the working smoothness of each process is ensured.

Description

Technical Field

[0001] The present invention relates to the field of computer application technology, and in particular to a method, device, equipment and medium for controlling the outflow rate of a tobacco storage cabinet. Background Art

[0002] In the cigarette production line, the tobacco storage cabinet supplies tobacco to the tobacco temporary storage cabinet or tobacco limiting tube and other process carriers. It is understandable that the flow of tobacco in and out between processes needs to be adjusted according to the actual situation to avoid serious tobacco shortage or blockage, which may cause the production line to be interrupted.

[0003] In the related technology, the tobacco quantity is usually monitored in real time in the tobacco storage cabinet, tobacco temporary storage cabinet and tobacco limiting tube and other processes, and in case of shortage or blockage, the tobacco inlet and outlet flow of the related processes is timely regulated to avoid interruption of the production line. However, this method cannot avoid the shortage or blockage of tobacco on the production line. Summary of the invention

[0004] The present invention provides a method, device, equipment and medium for controlling the flow rate of tobacco shreds from a tobacco storage cabinet, so as to solve the technical problem that the current method for controlling the flow rate of tobacco shreds from a tobacco storage cabinet cannot avoid tobacco shortage or blockage on the production line.

[0005] According to one aspect of the present invention, a method for controlling the flow rate of tobacco outflow from a tobacco storage cabinet is provided, the method comprising:

[0006] In response to a tobacco outlet start operation for a target tobacco silo, starting the bottom belt motor of the target tobacco silo based on a preliminary frequency;

[0007] Determine the real-time discharge flow rate of the target batch of shredded tobacco in the target shredded tobacco storage cabinet driven by the discharge bottom belt of the bottom belt motor at the preliminary frequency;

[0008] Determine the predicted feed flow rate of the next process carrier corresponding to the target tobacco storage cabinet according to the real-time tobacco output flow rate;

[0009] A feed flow threshold is determined, and the preliminary frequency of the bottom belt motor is adjusted according to the predicted feed flow and the feed flow threshold to obtain a target frequency.

[0010] According to another aspect of the present invention, a tobacco outlet flow control device for a tobacco storage cabinet is provided, the device comprising:

[0011] A wire-out starting module, configured to start the bottom belt motor of the target tobacco storage cabinet based on a preliminary frequency in response to a wire-out starting operation for the target tobacco storage cabinet;

[0012] A discharge determination module, used for determining a real-time discharge flow rate of a target batch of shredded tobacco in the target shredded tobacco storage cabinet driven by the discharge bottom belt of the bottom belt motor at the preliminary frequency;

[0013] A discharge prediction module, used to determine the predicted feed flow rate of the next process carrier corresponding to the target tobacco storage cabinet according to the real-time discharge flow rate;

[0014] The frequency adjustment module is used to determine a feed flow threshold, and adjust the preliminary frequency of the bottom belt motor according to the predicted feed flow and the feed flow threshold to obtain a target frequency.

[0015] According to another aspect of the present invention, there is provided an electronic device, the electronic device comprising:

[0016] at least one processor; and

[0017] a memory communicatively connected to the at least one processor; wherein,

[0018] The memory stores a computer program executable 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 method for controlling the outlet flow rate of a tobacco storage cabinet described in any embodiment of the present invention.

[0019] According to another aspect of the present invention, a computer-readable storage medium is provided, wherein the computer-readable storage medium stores computer instructions for enabling a processor to implement the method for controlling the flow rate of tobacco hopper according to any embodiment of the present invention when the computer instructions are executed.

[0020] The technical solution of the embodiment of the present invention is to start the bottom belt motor of the target tobacco storage cabinet based on the preliminary frequency in response to the tobacco discharge start operation for the target tobacco storage cabinet; determine the real-time discharge flow rate of the target batch of tobacco in the target tobacco storage cabinet driven by the discharge bottom belt of the bottom belt motor at the preliminary frequency; determine the predicted feed flow rate of the next process carrier corresponding to the target tobacco storage cabinet according to the real-time discharge flow rate; determine the feed flow rate threshold, and adjust the preliminary frequency of the bottom belt motor according to the predicted feed flow rate and the feed flow rate threshold to obtain the target frequency. The effect of predicting the feed flow rate of the next process carrier based on the real-time discharge flow rate of the storage cabinet is achieved, and the motor frequency of the storage cabinet is adjusted in advance based on the predicted feed flow rate of the next process carrier, which effectively avoids the shortage or blockage of tobacco in the next process carrier and ensures the working smoothness of the next process carrier. The problem of the traditional method of real-time monitoring of the tobacco amount of each process and making relevant adjustments after the shortage or blockage occurs is solved.

[0021] It should be understood that the contents described in this section are not intended to identify the key or important features of the embodiments of the present invention, nor are they intended to limit the scope of the present invention. Other features of the present invention will become easily understood through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] 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.

[0023] Figure 1 This is a flow chart of a method for controlling the flow rate of tobacco cuts from a tobacco storage cabinet according to Embodiment 1 of the present invention;

[0024] Figure 2 This is a simulation diagram of a tobacco outlet flow control system of a tobacco storage cabinet provided according to an embodiment of the present invention;

[0025] Figure 3 is a simulation diagram of a target tobacco storage cabinet provided according to an embodiment of the present invention;

[0026] Figure 4 is a flow chart of a method for controlling the flow rate of tobacco shreds from a tobacco storage cabinet according to a second embodiment of the present invention;

[0027] Figure 5 2 is a schematic diagram of the structure of a tobacco outlet flow control device of a tobacco storage cabinet provided according to a third embodiment of the present invention;

[0028] Figure 6 It is a structural schematic diagram of an electronic device for implementing the tobacco outlet flow control method of a tobacco storage cabinet according to an embodiment of the present invention. DETAILED DESCRIPTION

[0029] In order to enable those skilled in the art to better understand the scheme of the present invention, the technical scheme 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 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 creative work should fall within the scope of protection of the present invention.

[0030] It should be noted that the terms "first", "second", etc. in the specification and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the present invention described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units that are clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0031] Embodiment 1

[0032] Figure 1 A flowchart of a method for controlling the flow rate of tobacco shreds from a tobacco storage cabinet is provided for the first embodiment of the present invention. This embodiment is applicable to the case where the flow rate of tobacco shreds from a tobacco storage cabinet is controlled by prediction. The method can be performed by a flow rate control device for tobacco shreds from a tobacco storage cabinet. The flow rate control device for tobacco shreds from a tobacco storage cabinet can be implemented in the form of hardware and / or software. The flow rate control device for tobacco shreds from a tobacco storage cabinet can be configured in a computer. Figure 1 As shown, the method includes:

[0033] S110 , in response to a tobacco extraction start operation for a target tobacco cabinet, start the bottom belt motor of the target tobacco cabinet based on a preliminary frequency.

[0034] The target tobacco storage cabinet can be understood as a tobacco carrier at a process node in the cigarette production process. The target tobacco storage cabinet can be used to temporarily store tobacco, and can also be used to provide tobacco to the next process. Usually, the next process carrier of the next process corresponding to the target tobacco storage cabinet can be a tobacco temporary storage cabinet or a tobacco limiting tube. The tobacco transmission between the target tobacco storage cabinet and the next process carrier can be achieved by a tobacco conveyor belt. Figure 2 As shown, Figure 2 1 is a simulation diagram of a tobacco shredded storage cabinet outlet flow control system according to an embodiment of the present invention, wherein 11 represents a target tobacco shredded storage cabinet, 22 represents a next process carrier, and 33 represents a tobacco shredded conveyor belt.

[0035] The thread-out starting operation can be understood as an operation of starting the bottom belt motor of the target cut tobacco storage cabinet. Optionally, the thread-out starting operation can be a triggering operation for a thread-out starting control.

[0036] The bottom belt motor can be used to drive the discharge bottom belt.

[0037] The discharge bottom belt can be used to convey the tobacco in the target tobacco storage cabinet to the tobacco conveyor belt connected to the target tobacco storage cabinet; this process is the tobacco discharge process of the tobacco storage cabinet.

[0038] The preliminary frequency may be understood as the starting frequency of the bottom belt motor.

[0039] Optionally, the preliminary frequency is determined based on the cabinet structure parameters of the target tobacco cabinet, the static tobacco density of the target batch of tobacco, a preset target discharge flow rate and a speed change value of the discharge bottom belt at a unit frequency.

[0040] Wherein, the static stacking height is determined by an infrared ranging sensor installed on the target tobacco storage cabinet.

[0041] The static tobacco density is determined according to the tobacco type of the target batch of tobacco in the target tobacco storage cabinet and the static storage time of the target batch of tobacco in the target tobacco storage cabinet.

[0042] Optionally, before starting the bottom belt motor of the target tobacco storage cabinet based on the preliminary frequency, the method further comprises:

[0043] Determine the static stacking height of the target batch of shredded tobacco in the target shredded tobacco storage cabinet in the first direction by using an infrared distance measuring sensor;

[0044] Determine the cabinet structure parameters of the target tobacco cabinet, the static tobacco density of the target batch of tobacco, the preset target discharge flow rate and the speed change value of the discharge bottom belt under unit frequency;

[0045] The preliminary frequency is determined according to the static stacking height, the cabinet structural parameters, the static tobacco density, the target discharge flow rate and the speed change value.

[0046] The infrared distance measuring sensor may have an infrared distance measuring function.

[0047] In an embodiment of the present invention, the infrared distance measuring sensor is installed in the target tobacco storage cabinet. Figure 3 As shown, Figure 3 It is a simulation diagram of a target tobacco storage cabinet provided according to an embodiment of the present invention.

[0048] The infrared distance measuring sensor may be installed in the area indicated by 1101. 1102 indicates the discharge port of the target tobacco storage cabinet. 1103 may indicate the target batch of tobacco, and it is understood that, in general, the accumulation of tobacco is uneven and the accumulation surface of tobacco is undulating. 1104 indicates the discharge bottom belt.

[0049] Optionally, the step of determining the static stacking height of the target batch of shredded tobacco in the target shredded tobacco storage cabinet in the first direction by using an infrared ranging sensor comprises:

[0050] The installation position of the infrared distance measuring sensor is taken as the origin to determine the static stacking height of the target batch of tobacco in the target tobacco storage cabinet in the first direction.

[0051] In the embodiment of the present invention, the first direction may be perpendicular to the discharge bottom belt.

[0052] The static stacking height can be understood as the stacking height of the static target batch of tobacco in the first direction related to the infrared ranging sensor before the tobacco is produced. In the embodiment of the present invention, the static stacking height is related to the actual installation position of the infrared ranging sensor and the actual stacking condition of the target batch of tobacco, and is not specifically limited here.

[0053] The cabinet structural parameter may be understood as a structural parameter related to the target cut tobacco cabinet. In an embodiment of the present invention, the cabinet structural parameter may be the length of the inner area of ​​the target cut tobacco cabinet in the second direction, i.e., the cabinet width. The second direction may be perpendicular to the first direction, and the second direction may be parallel to the conveying direction of the discharge bottom belt.

[0054] The target discharge flow rate can be understood as a target value related to the discharge flow rate. In the embodiment of the present invention, the target discharge flow rate is the discharge flow rate of the target tobacco storage cabinet pre-set based on user needs and scenario needs.

[0055] The speed variation value may be understood as the speed variation value of the discharging bottom belt at a unit frequency. In the embodiment of the present invention, the speed variation value may be related to the property of the target tobacco storage (eg, storage cabinet model) and may be a fixed value.

[0056] The static tobacco density can be understood as the density of the static target batch of tobacco before being produced.

[0057] Optionally, determining the static tobacco density of the target batch of tobacco shreds includes:

[0058] Determining the tobacco category of the target batch of tobacco, wherein the tobacco category is determined according to the supply source of the target batch of tobacco;

[0059] Determining the static storage time of the target batch of shredded tobacco in the target shredded tobacco storage cabinet;

[0060] The static tobacco density of the target batch of tobacco shreds is determined according to the static storage time and the type of tobacco shreds.

[0061] The tobacco category can be understood as the category of the target batch of tobacco. Generally, tobacco provided by different supply sources has different densities. In the embodiment of the present invention, the original tobacco density of tobacco of different tobacco categories can be different. The original tobacco density can be understood as the density of tobacco before the tobacco is stored in the target tobacco storage cabinet.

[0062] The static storage time can be understood as the time for statically storing the target batch of tobacco in the target tobacco storage cabinet. Exemplarily, the static storage time can be 6 hours, 12 hours or 48 hours.

[0063] In the embodiment of the present invention, the static tobacco density of the target batch of tobacco is positively correlated with the static storage time. That is, as the static storage time increases, the stacking height of the tobacco will decrease and the tobacco density will increase. In addition, the static tobacco density of the target batch of tobacco is also positively correlated with the original tobacco density corresponding to the tobacco category.

[0064] Specifically, the determining of the preliminary frequency according to the static stacking height, the cabinet structural parameters, the static tobacco density, the target discharge flow rate and the speed change value can be implemented based on the following formula:

[0065] F1=A1 / [W×H1×ρ1×V1];

[0066] Among them, F1 represents the preliminary frequency, A1 represents the target discharge flow rate, W represents the storage cabinet structure parameter, H1 represents the static stacking height, ρ1 represents the static tobacco density, and V1 represents the speed change value.

[0067] S120, determining a real-time discharge flow rate of a target batch of shredded tobacco in the target shredded tobacco storage cabinet driven by the discharge bottom belt of the bottom belt motor at the preliminary frequency.

[0068] The real-time discharge flow rate may be understood as the real-time discharge flow rate of the target batch of shredded tobacco.

[0069] In the embodiment of the present invention, the real-time discharge flow rate may be related to the real-time tobacco density of the target batch of tobacco, the real-time tobacco density of the target batch of tobacco, the bottom belt speed of the bottom belt motor at the preliminary frequency, and the cabinet structure parameters.

[0070] The real-time tobacco density is related to the tobacco category and the real-time storage time of the target batch of tobacco. The real-time stacking height can be understood as the stacking height of the target batch of tobacco in the first direction related to the infrared ranging sensor during the real-time tobacco output process.

[0071] Optionally, the determining of the real-time discharge flow rate of the target batch of shredded tobacco in the target shredded tobacco storage cabinet driven by the discharge bottom belt of the bottom belt motor at the preliminary frequency comprises:

[0072] Determine the real-time stacking height of the target batch of shredded tobacco in the target shredded tobacco storage cabinet in the first direction by using an infrared distance measuring sensor;

[0073] Determine the real-time tobacco density of the target batch of tobacco, and determine the preliminary bottom belt speed of the bottom belt motor at the preliminary frequency;

[0074] The real-time discharge flow rate of the target batch of shredded tobacco in the target shredded tobacco storage cabinet is determined according to the real-time stacking height, the real-time shredded tobacco density, the preliminary bottom belt speed and the cabinet structural parameters.

[0075] Specifically, the real-time discharge flow rate of the target batch of shredded tobacco in the target shredded tobacco storage cabinet is determined according to the real-time stacking height, the real-time shredded tobacco density, the preliminary bottom belt speed and the cabinet structure parameters, which can be achieved based on the following formula:

[0076] A2=V2×W×H2×ρ2;

[0077] Among them, A2 represents the real-time discharge flow rate, V2 represents the initial bottom belt speed, W represents the storage cabinet structure parameters, H2 represents the real-time stacking height, and ρ2 represents the real-time tobacco density.

[0078] S130, determining the predicted feed flow rate of the carrier of the next process corresponding to the target tobacco storage cabinet according to the real-time tobacco output flow rate.

[0079] The next process carrier can be understood as the tobacco carrier of the next process corresponding to the target tobacco storage cabinet. Exemplarily, the next process carrier can be a tobacco temporary storage cabinet or a tobacco limiting tube.

[0080] The predicted feed flow rate can be understood as the predicted feed flow rate of the carrier of the next process at the predicted time point. The time interval between the predicted time point and the real-time time point corresponding to the real-time tobacco output flow rate is related to the installation position of the infrared distance sensor, the bottom belt speed, the conveyor belt length of the tobacco conveyor belt between processes (between the target tobacco storage cabinet and the carrier of the next process) and the corresponding conveying speed of the tobacco conveyor belt.

[0081] S140, determining a feed flow threshold, and adjusting the preliminary frequency of the bottom belt motor according to the predicted feed flow and the feed flow threshold to obtain a target frequency.

[0082] Among them, the feed flow threshold can be understood as the upper limit threshold of the feed flow set for the carrier of the next process. In the embodiments of the present invention, the feed flow threshold is related to the scenario requirements and is not specifically limited herein.

[0083] The target frequency can be understood as the frequency of the bottom belt motor obtained by adjustment.

[0084] Optionally, the preliminary frequency of the bottom belt motor is adjusted according to the numerical comparison relationship between the predicted feed flow and the feed flow threshold. Specifically, let S2 represent the predicted feed flow and S represent the feed flow threshold. Then, when S2 = S, the preliminary frequency remains unchanged; when S2 > S, the preliminary frequency is reduced based on a preset step size to reduce the wire output flow; when S2 < S, the preliminary frequency is increased based on a preset step size to increase the wire output flow.

[0085] Optionally, after obtaining the target frequency, it further includes:

[0086] Determine the tobacco accumulation information of the carrier of the next process;

[0087] Adjust the target frequency according to the tobacco accumulation information to obtain the adjusted target frequency.

[0088] Among them, the tobacco accumulation information can characterize the accumulation situation of tobacco in the carrier of the next process.

[0089] Optionally, the tobacco accumulation information can characterize whether there is material in the front cabinet, middle cabinet, and rear cabinet in the temporary storage cabinet respectively, or can characterize whether there is material in the high-level pipe, middle-level pipe, and low-level pipe in the tobacco limited pipe respectively.

[0090] In the embodiments of the present invention, the tobacco accumulation information can be directly obtained through a Programmable Logic Controller (PLC).

[0091] The technical solution of the embodiment of the present invention is to start the bottom belt motor of the target tobacco storage cabinet based on the preliminary frequency in response to the tobacco discharge start operation for the target tobacco storage cabinet; determine the real-time discharge flow rate of the target batch of tobacco in the target tobacco storage cabinet driven by the discharge bottom belt of the bottom belt motor at the preliminary frequency; determine the predicted feed flow rate of the next process carrier corresponding to the target tobacco storage cabinet according to the real-time discharge flow rate; determine the feed flow rate threshold, and adjust the preliminary frequency of the bottom belt motor according to the predicted feed flow rate and the feed flow rate threshold to obtain the target frequency. The effect of predicting the feed flow rate of the next process carrier based on the real-time discharge flow rate of the storage cabinet is achieved, and the motor frequency of the storage cabinet is adjusted in advance based on the predicted feed flow rate of the next process carrier, which effectively avoids the shortage or blockage of tobacco in the next process carrier and ensures the working smoothness of the next process carrier. The problem of the traditional method of real-time monitoring of the tobacco amount of each process and making relevant adjustments after the shortage or blockage occurs is solved.

[0092] Embodiment 2

[0093] Figure 4 This is a flow chart of a method for controlling the flow rate of tobacco shreds from a tobacco storage cabinet provided in the second embodiment of the present invention. This embodiment is a refinement of the method for determining the predicted feed flow rate of the next process carrier corresponding to the target tobacco shreds storage cabinet according to the real-time flow rate of tobacco shreds as described in the above embodiment. Figure 4 As shown, the method includes:

[0094] S210 , in response to a tobacco extraction start operation for a target tobacco cabinet, start the bottom belt motor of the target tobacco cabinet based on a preliminary frequency.

[0095] S220, determining the real-time discharge flow rate of the target batch of shredded tobacco in the target shredded tobacco storage cabinet driven by the discharge bottom belt of the bottom belt motor at the preliminary frequency.

[0096] S230, determining the real-time time point corresponding to the real-time wire output flow rate.

[0097] S240, determining the time interval between processes, and determining the predicted time point according to the real time point and the time interval between processes.

[0098] The time interval between the processes is the time interval for transferring the tobacco from the distance measuring position of the infrared distance measuring sensor to the position of the feed port of the carrier of the next process. Figure 3 , Figure 3 The purple point may be a distance measurement position point, which is the intersection of a target straight line and the discharge bottom belt, and the target straight line is determined based on the installation point of the infrared distance measurement sensor and the first direction.

[0099] Optionally, determining the time interval between processes includes:

[0100] Determine the transmission distance between the target discharge port of the target tobacco storage cabinet and the infrared distance sensor in the second direction by using an infrared distance sensor;

[0101] Determine the conveyor belt length of the tobacco conveyor belt between the target tobacco storage cabinet and the next process carrier and the corresponding conveying speed of the tobacco conveyor belt;

[0102] Determine a first time interval according to the conveying pitch and the preliminary bottom belt speed, and determine a second time interval according to the conveying belt length and the conveying speed;

[0103] An inter-process time interval is determined according to the first time interval and the second time interval.

[0104] The second direction may be perpendicular to the first direction and parallel to the conveying direction of the discharge bottom belt.

[0105] The conveyor belt length can be understood as the length of the tobacco conveyor belt.

[0106] In an embodiment of the present invention, when the infrared ranging sensor is installed directly above the target discharge port of the target tobacco storage cabinet, the transmission distance is 0; otherwise, the transmission distance is a positive value greater than 0.

[0107] The specific installation position of the infrared distance measuring sensor on the target tobacco storage cabinet can be determined according to the actual hardware structure of the target tobacco storage cabinet, and is not specifically limited here.

[0108] The conveying speed may be understood as the tobacco conveying speed of the tobacco conveyor belt. In the embodiment of the present invention, the conveying speed may be related to the actual production scene of the production line, and is not specifically limited here.

[0109] The first time interval can be understood as the time interval for transferring the tobacco from the distance measuring position to the discharge port of the target tobacco storage cabinet.

[0110] The second time interval can be understood as the time interval for transferring the tobacco from the discharge port of the target tobacco storage cabinet to the feed port of the carrier of the next process.

[0111] Specifically, the sum of the first time interval and the second time interval is used as the inter-process time interval.

[0112] S250, using the real-time discharge flow rate at the real-time time point as the predicted feed flow rate of the carrier of the next process at the predicted time point.

[0113] For example, the real-time time point is time point a, the time interval between the processes is x, and the real-time discharge flow rate at time point a is S a ; then the predicted time point b = a + x; S a As the predicted feed flow rate of the next process carrier at the next process carrier at time point b.

[0114] S260, determining a feed flow threshold, and adjusting the preliminary frequency of the bottom belt motor according to the predicted feed flow and the feed flow threshold to obtain a target frequency.

[0115] The technical solution of the embodiment of the present invention determines the real-time point corresponding to the real-time wire flow rate; determines the time interval between processes, determines the predicted time point according to the real-time point and the time interval between processes; and uses the real-time discharge flow rate at the real-time point as the predicted feed flow rate of the carrier of the next process at the predicted time point. This improves the prediction accuracy of the feed flow rate of the carrier of the next process.

[0116] The following is a further overall description of the method for controlling the flow rate of tobacco storage cabinets:

[0117] The current material height H of the tobacco storage cabinet is obtained through the infrared distance sensor; the tobacco storage time T1 of each tobacco storage cabinet is obtained through the PLC; the tobacco is stored in the storage cabinet, and the height of the tobacco will decrease over time, causing density changes. According to the relationship between different brands of tobacco leaves and different storage times, the current tobacco density ρ of the tobacco storage cabinet is obtained.

[0118] Set the initial frequency of the bottom belt motor of the tobacco storage cabinet. The initial frequency can be calculated according to the formula or set according to the empirical value.

[0119] Obtain the distance L between each tobacco storage cabinet and the temporary storage cabinet or limiting tube of the next process (including the conveyor belt length between processes and the distance between the infrared distance sensor and the discharge port in the tobacco conveying direction); calculate the conveying time interval T between each tobacco storage cabinet and the carrier of the next process according to the bottom belt speed V of each tobacco storage cabinet, the conveyor belt speed between processes and the distance L;

[0120] According to the current material height H, the current tobacco density ρ, the cabinet width and the bottom belt speed, the current cabinet discharge flow S1 is calculated; through the stack delay (transmission time interval T), the predicted feed flow S2 of the next process carrier of each tobacco cabinet is obtained.

[0121] When S2=set flow, it remains unchanged; when S2>set flow, the frequency of the current storage cabinet bottom belt motor should be reduced to reduce the amount of material discharged from the cabinet; when S2<set flow, the frequency of the current storage cabinet bottom belt motor should be increased to increase the amount of material discharged from the cabinet.

[0122] The material status of the carrier of the next process is obtained through PLC, such as the material presence signals at the front, middle and back positions of the temporary storage cabinet, and the material presence signals at the high, middle and low positions of the limiting tube, and the frequency of the motor at the bottom of the storage cabinet is adjusted again according to the obtained signals.

[0123] The technical solution of the present invention is applicable to tobacco of various brands and has high versatility. It can ensure the stability of the flow of inlet and outlet materials in each process and reduce the start and stop of equipment in the production line. Through stack delay, the flow of material discharge from the storage cabinet to the feed flow of the next process is predicted, and the frequency of the motor at the bottom of the storage cabinet is controlled in advance, thereby eliminating the control hysteresis that cannot avoid tobacco shortage or blockage due to real-time monitoring.

[0124] Embodiment 3

[0125] Figure 5 This is a schematic diagram of the structure of a tobacco outlet flow control device for a tobacco storage cabinet provided in Embodiment 3 of the present invention. Figure 5 As shown, the device includes: a wire-out starting module 310 , a wire-out determining module 320 , a wire-out predicting module 330 and a frequency adjusting module 340 .

[0126] Among them, the wire discharge start module 310 is used to respond to the wire discharge start operation for the target tobacco storage cabinet, and start the bottom belt motor of the target tobacco storage cabinet based on the preliminary frequency; the discharge determination module 320 is used to determine the real-time discharge flow rate of the target batch of tobacco in the target tobacco storage cabinet driven by the discharge bottom belt of the bottom belt motor at the preliminary frequency; the discharge prediction module 330 is used to determine the predicted feed flow rate of the next process carrier corresponding to the target tobacco storage cabinet according to the real-time wire discharge flow rate; the frequency adjustment module 340 is used to determine the feed flow rate threshold, and adjust the preliminary frequency of the bottom belt motor according to the predicted feed flow rate and the feed flow rate threshold to obtain the target frequency.

[0127] The technical solution of the embodiment of the present invention is to start the bottom belt motor of the target tobacco storage cabinet based on the preliminary frequency in response to the tobacco discharge start operation for the target tobacco storage cabinet; determine the real-time discharge flow rate of the target batch of tobacco in the target tobacco storage cabinet driven by the discharge bottom belt of the bottom belt motor at the preliminary frequency; determine the predicted feed flow rate of the next process carrier corresponding to the target tobacco storage cabinet according to the real-time discharge flow rate; determine the feed flow rate threshold, and adjust the preliminary frequency of the bottom belt motor according to the predicted feed flow rate and the feed flow rate threshold to obtain the target frequency. The effect of predicting the feed flow rate of the next process carrier based on the real-time discharge flow rate of the storage cabinet is achieved, and the motor frequency of the storage cabinet is adjusted in advance based on the predicted feed flow rate of the next process carrier, which effectively avoids the shortage or blockage of tobacco in the next process carrier and ensures the working smoothness of the next process carrier. The problem of the traditional method of real-time monitoring of the tobacco amount of each process and making relevant adjustments after the shortage or blockage occurs is solved.

[0128] Optionally, the tobacco outlet flow control device of the tobacco storage cabinet further includes: a first infrared distance measurement module, a related data determination module and a preliminary frequency determination module;

[0129] Wherein, the first infrared distance measuring module is used to determine the static stacking height of the target batch of tobacco in the target tobacco storage cabinet in the first direction through an infrared distance measuring sensor before starting the bottom belt motor of the target tobacco storage cabinet based on the preliminary frequency;

[0130] The relevant data determination module is used to determine the cabinet structure parameters of the target tobacco cabinet, the static tobacco density of the target batch of tobacco, the preset target discharge flow rate and the speed change value of the discharge bottom belt under unit frequency;

[0131] The preliminary frequency determination module is used to determine the preliminary frequency according to the static stacking height, the cabinet structural parameters, the static tobacco density, the target discharge flow rate and the speed change value.

[0132] Optionally, the relevant data determination module includes: a tobacco category determination unit, a storage time determination unit and a tobacco density determination unit;

[0133] The tobacco category determination unit is used to determine the tobacco category of the target batch of tobacco, wherein the tobacco category is determined according to the supply source of the target batch of tobacco;

[0134] The storage time determination unit is used to determine the static storage time of the target batch of shredded tobacco in the target shredded tobacco storage cabinet;

[0135] The shredded tobacco density determining unit is used to determine the static shredded tobacco density of the target batch of shredded tobacco according to the static storage time and the shredded tobacco category.

[0136] Optionally, the material discharging determination module 320 is specifically configured to:

[0137] Determine the real-time stacking height of the target batch of shredded tobacco in the target shredded tobacco storage cabinet in the first direction by using an infrared distance measuring sensor;

[0138] Determine the real-time tobacco density of the target batch of tobacco, and determine the preliminary bottom belt speed of the bottom belt motor at the preliminary frequency;

[0139] The real-time discharge flow rate of the target batch of shredded tobacco in the target shredded tobacco storage cabinet is determined according to the real-time stacking height, the real-time shredded tobacco density, the preliminary bottom belt speed and the cabinet structural parameters.

[0140] Optionally, the material discharge prediction module 330 includes: a time point determination unit, a time interval application unit, and a material discharge prediction unit;

[0141] Wherein, the time point determination unit is used to determine the real-time time point corresponding to the real-time wire output flow rate;

[0142] The time interval application unit is used to determine the time interval between processes, and determine the predicted time point according to the real time point and the time interval between processes;

[0143] The discharge prediction unit is used to use the real-time discharge flow rate at the real-time time point as the predicted feed flow rate of the carrier of the next process at the predicted time point.

[0144] Optionally, the time interval application unit includes: a second infrared ranging subunit, a transmission data determination subunit, a subinterval determination subunit, and a process interval determination subunit;

[0145] Wherein, the second infrared distance measuring subunit is used to determine the transmission distance between the target discharge port of the target tobacco storage cabinet and the infrared distance measuring sensor in the second direction through the infrared distance measuring sensor;

[0146] The transmission data determination subunit is used to determine the conveyor belt length of the tobacco conveyor belt between the target tobacco storage cabinet and the next process carrier and the corresponding transmission speed of the tobacco conveyor belt;

[0147] The sub-interval determination sub-unit is used to determine the first time interval according to the conveying pitch and the preliminary bottom belt speed, and determine the second time interval according to the conveying belt length and the conveying speed;

[0148] The process interval determination subunit is used to determine the time interval between processes according to the first time interval and the second time interval.

[0149] Optionally, the tobacco outlet flow control device of the tobacco storage cabinet further includes: a next process monitoring module and a frequency readjustment module;

[0150] The next process monitoring module is used to determine the tobacco accumulation information of the next process carrier after the target frequency is obtained;

[0151] The frequency readjustment module is used to adjust the target frequency according to the tobacco accumulation information to obtain the adjusted target frequency.

[0152] The tobacco outlet flow control device for a tobacco storage cabinet provided in an embodiment of the present invention can execute the tobacco outlet flow control method for a tobacco storage cabinet provided in any embodiment of the present invention, and has functional modules and beneficial effects corresponding to the execution method.

[0153] Embodiment 4

[0154] Figure 6 A schematic diagram of the structure of an electronic device 10 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 electronic device can also represent various forms of mobile devices, such as personal digital processing, cellular phones, smart phones, wearable devices (such as helmets, glasses, watches, etc.) and other similar computing devices. 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 required herein.

[0155] like Figure 6 As shown, the electronic device 10 includes at least one processor 11, and a memory connected to the at least one processor 11, such as a read-only memory (ROM) 12, a random access memory (RAM) 13, etc., wherein the memory stores a computer program that can be executed by at least one processor, and the processor 11 can perform various appropriate actions and processes according to the computer program stored in the read-only memory (ROM) 12 or the computer program loaded from the storage unit 18 to the random access memory (RAM) 13. In the RAM 13, various programs and data required for the operation of the electronic device 10 can also be stored. The processor 11, the ROM 12, and the RAM 13 are connected to each other through a bus 14. An input / output (I / O) interface 15 is also connected to the bus 14.

[0156] A number of components in the electronic device 10 are connected to the I / O interface 15, including: an input unit 16, such as a keyboard, a mouse, etc.; an output unit 17, such as various types of displays, speakers, etc.; a storage unit 18, such as a disk, an optical disk, etc.; and a communication unit 19, such as a network card, a modem, a wireless communication transceiver, etc. The communication unit 19 allows the electronic device 10 to exchange information / data with other devices through a computer network such as the Internet and / or various telecommunication networks.

[0157] The processor 11 may be a variety of general and / or special processing components with processing and computing capabilities. Some examples of the processor 11 include, but are not limited to, a central processing unit (CPU), a graphics processing unit (GPU), various special artificial intelligence (AI) computing chips, various processors running machine learning model algorithms, a digital signal processor (DSP), and any appropriate processor, controller, microcontroller, etc. The processor 11 executes the various methods and processes described above, such as a method for controlling the flow rate of a tobacco storage cabinet.

[0158] In some embodiments, the method for controlling the flow rate of the tobacco shredded cabinet can be implemented as a computer program, which is tangibly contained in a computer-readable storage medium, such as a storage unit 18. In some embodiments, part or all of the computer program can be loaded and / or installed on the electronic device 10 via the ROM 12 and / or the communication unit 19. When the computer program is loaded into the RAM 13 and executed by the processor 11, one or more steps of the method for controlling the flow rate of the tobacco shredded cabinet described above can be executed. Alternatively, in other embodiments, the processor 11 can be configured to execute the method for controlling the flow rate of the tobacco shredded cabinet by any other appropriate means (for example, by means of firmware).

[0159] Various implementations of the systems and techniques described above herein 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), systems on chips (SOCs), load programmable logic devices (CPLDs), computer hardware, firmware, software, and / or combinations thereof. These various implementations can include: being implemented in one or more computer programs that can be executed and / or interpreted on a programmable system including 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.

[0160] 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, so that when the computer program is executed by the processor, the functions / operations specified in the flow chart and / or block diagram are implemented. The computer program may be executed entirely on the machine, partially on the machine, partially on the machine and partially on a remote machine as a stand-alone software package, or entirely on a remote machine or server.

[0161] In the context of the present invention, a computer-readable storage medium may be a tangible medium that may contain or store a computer program for use by or in combination with an instruction execution system, device or equipment. A computer-readable storage medium may 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, a computer-readable storage medium may be a machine-readable signal medium. A more specific example of a machine-readable storage medium may 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.

[0162] To provide interaction with a user, the systems and techniques described herein may 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 a pointing device (e.g., a mouse or trackball) through which the user can provide input to the electronic device. Other types of devices may also be used to provide interaction with the user; for example, the feedback provided to the user may be any form of sensory feedback (e.g., visual feedback, auditory feedback, or tactile feedback); and input from the user may be received in any form (including acoustic input, voice input, or tactile input).

[0163] The systems and techniques described herein may be implemented in a computing system that includes backend 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 frontend components (e.g., a user computer with a graphical user interface or a 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 backend components, middleware components, or frontend components. The components of the system may 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.

[0164] A computing system may include a client and a server. The client and the server are generally remote from each other and usually interact through a communication network. The client and server relationship is generated by computer programs running on the corresponding computers and having a client-server relationship with each other. The server may be a cloud server, also known as a cloud computing server or cloud host, which is a host product in the cloud computing service system to solve the defects of difficult management and weak business scalability in traditional physical hosts and VPS services.

[0165] It should be understood that the various forms of processes shown above can be used to reorder, add or delete steps. For example, the steps described in the present invention can be executed in parallel, sequentially or in different orders, as long as the desired results of the technical solution of the present invention can be achieved, and this document does not limit this.

[0166] The above specific implementations do not constitute a limitation on the protection scope of the present invention. It should be understood by those skilled in the art that various modifications, combinations, sub-combinations and substitutions can be made according to design requirements and other factors. Any modification, equivalent substitution and improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A method for controlling the flow rate of tobacco cuts from a tobacco cut storage cabinet, characterized in that: include: In response to a tobacco outlet start operation for a target tobacco silo, starting the bottom belt motor of the target tobacco silo based on a preliminary frequency; Determine the real-time discharge flow rate of the target batch of shredded tobacco in the target shredded tobacco storage cabinet driven by the discharge bottom belt of the bottom belt motor at the preliminary frequency; Determine the predicted feed flow rate of the next process carrier corresponding to the target tobacco storage cabinet according to the real-time tobacco output flow rate; A feed flow threshold is determined, and the preliminary frequency of the bottom belt motor is adjusted according to the predicted feed flow and the feed flow threshold to obtain a target frequency.

2. The method according to claim 1, characterized in that Before starting the bottom belt motor of the target tobacco storage cabinet based on the preliminary frequency, the method comprises: Determine the static stacking height of the target batch of shredded tobacco in the target shredded tobacco storage cabinet in the first direction by using an infrared distance measuring sensor; Determine the cabinet structure parameters of the target tobacco cabinet, the static tobacco density of the target batch of tobacco, the preset target discharge flow rate and the speed change value of the discharge bottom belt under unit frequency; The preliminary frequency is determined according to the static stacking height, the cabinet structural parameters, the static tobacco density, the target discharge flow rate and the speed change value.

3. The method according to claim 2, characterized in that The step of determining the static tobacco density of the target batch of tobacco shreds comprises: Determining the tobacco category of the target batch of tobacco, wherein the tobacco category is determined according to the supply source of the target batch of tobacco; Determining the static storage time of the target batch of shredded tobacco in the target shredded tobacco storage cabinet; The static tobacco density of the target batch of tobacco shreds is determined according to the static storage time and the type of tobacco shreds.

4. The method according to claim 1, characterized in that: The step of determining the real-time discharge flow rate of the target batch of shredded tobacco in the target shredded tobacco storage cabinet driven by the discharge bottom belt of the bottom belt motor at the preliminary frequency comprises: Determine the real-time stacking height of the target batch of shredded tobacco in the target shredded tobacco storage cabinet in the first direction by using an infrared distance measuring sensor; Determine the real-time tobacco density of the target batch of tobacco, and determine the preliminary bottom belt speed of the bottom belt motor at the preliminary frequency; The real-time discharge flow rate of the target batch of shredded tobacco in the target shredded tobacco storage cabinet is determined according to the real-time stacking height, the real-time shredded tobacco density, the preliminary bottom belt speed and the cabinet structural parameters.

5. The method according to claim 1, characterized in that: The step of determining the predicted feed flow rate of the next process carrier corresponding to the target tobacco storage cabinet according to the real-time tobacco output flow rate includes: Determine the real-time time point corresponding to the real-time wire output flow rate; Determine the time interval between processes, and determine the predicted time point according to the real time point and the time interval between processes; The real-time discharge flow rate at the real-time time point is used as the predicted feed flow rate of the carrier of the next process at the predicted time point.

6. The method according to claim 5, characterized in that Determining the time interval between processes includes: Determine the transmission distance between the target discharge port of the target tobacco storage cabinet and the infrared distance sensor in the second direction by using an infrared distance sensor; Determine the conveyor belt length of the tobacco conveyor belt between the target tobacco storage cabinet and the next process carrier and the corresponding conveying speed of the tobacco conveyor belt; Determine a first time interval according to the conveying pitch and the preliminary bottom belt speed, and determine a second time interval according to the conveying belt length and the conveying speed; An inter-process time interval is determined according to the first time interval and the second time interval.

7. The method according to claim 1, characterized in that After obtaining the target frequency, the method further includes: Determining the tobacco accumulation information of the carrier of the next process; The target frequency is adjusted according to the tobacco accumulation information to obtain the adjusted target frequency.

8. A tobacco cut flow rate control device for a tobacco cut storage cabinet, characterized in that: include: A wire-out starting module, configured to start the bottom belt motor of the target tobacco storage cabinet based on a preliminary frequency in response to a wire-out starting operation for the target tobacco storage cabinet; A discharge determination module, used for determining a real-time discharge flow rate of a target batch of shredded tobacco in the target shredded tobacco storage cabinet driven by the discharge bottom belt of the bottom belt motor at the preliminary frequency; A discharge prediction module, used to determine the predicted feed flow rate of the next process carrier corresponding to the target tobacco storage cabinet according to the real-time discharge flow rate; The frequency adjustment module is used to determine a feed flow threshold, and adjust the preliminary frequency of the bottom belt motor according to the predicted feed flow and the feed flow threshold to obtain a target frequency.

9. 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 executable 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 method for controlling the outlet flow rate of a tobacco storage cabinet according to any one of claims 1-7.

10. 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 method for controlling the flow rate of tobacco cutter output from a tobacco cutter storage cabinet according to any one of claims 1 to 7 when the processor executes the instructions.

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