Discharging flow control method and device

Abstract

The embodiment of the invention discloses a discharging flow control method and device. The method is applied to a tobacco making system, and the tobacco making system comprises a flow sensor, a discharging conveying belt, a before-shredding feeding machine connected with the discharging conveying belt, a blanking device connected with the before-shredding feeding machine and a shredding machine connected with the blanking device. The discharging conveying belt is used for conveying tobacco leaves in at least one tobacco leaf storage cabinet to the before-shredding feeding machine, the before-shredding feeding machine comprises a first stock bin, and the flow sensor is used for detecting the flow of the tobacco leaves conveyed on the discharging conveying belt; the method comprises the following steps: acquiring current discharging data sent by a flow sensor; on the basis of the current discharging data, actual temporary storage tobacco leaf data of a blanking device are determined; and a first data deviation between the actual temporary storage tobacco leaf data of the blanking device and preset target temporary storage tobacco leaf data is determined, a first control instruction is generated based on the first data deviation, and the first control instruction is sent to a conveying belt motor so that the conveying belt motor can adjust the discharging flow of a discharging conveying belt.

Description

Technical Field

[0001] The embodiments of the present invention relate to the technical field of discharge flow control, and in particular to a discharge flow control method and device. Background Art

[0002] In the cigarette production process, leaf cutting is one of the key processes in the tobacco production line. Flow control before and after leaf cutting is crucial to ensure the stable operation of subsequent processes.

[0003] In the prior art, it is often necessary to rely on manual experience to determine the set discharge flow rate of the discharge conveyor belt on the shredding production line based on manual experience, so as to control the discharge conveyor belt to transport tobacco leaves to the dropper according to the set discharge flow rate. However, in the process of implementing the present invention, it is found that the prior art has at least the following technical problems: relying on manual experience leads to poor accuracy of the set discharge flow rate, the discharge flow rate does not match the shredding flow rate of the shredder, the shredder is prone to stop or the dropper is full, and the stability and reliability of the equipment operation are poor. Summary of the invention

[0004] The embodiment of the present invention provides a discharge flow control method and device to make the set discharge flow more accurate; at the same time, it avoids the situation where the cutter stops or the feeder is full, thereby achieving the purpose of improving the stability and reliability of each device in the cigarette making system.

[0005] According to one aspect of the present invention, a method for controlling a discharge flow rate is provided, which is applied to a cigarette making system, wherein the cigarette making system comprises a flow sensor, a discharge conveyor belt, a pre-shredding feeder connected to the discharge conveyor belt, a dropper connected to the pre-shredding feeder, and a shredder connected to the dropper; the discharge conveyor belt is used to convey tobacco leaves in at least one tobacco leaf storage cabinet to the pre-shredding feeder, the pre-shredding feeder comprises a first silo, and the flow sensor is used to detect the flow rate of tobacco leaves transmitted on the discharge conveyor belt; the method comprises:

[0006] Acquire the current discharge data sent by the flow sensor; wherein the current discharge data includes the flow rate of tobacco leaves transmitted on the discharge conveyor belt corresponding to the current time period;

[0007] Based on the current discharging data, determining the actual temporary storage tobacco leaf data of the dropper;

[0008] Determine a first data deviation between the actual temporarily stored tobacco leaf data of the dropper and the preset target temporarily stored tobacco leaf data, generate a first control instruction based on the first data deviation, and send the first control instruction to the conveyor belt motor so that the conveyor belt motor adjusts the discharge flow rate of the discharge conveyor belt.

[0009] According to another aspect of the present invention, a discharge flow control device is provided, which is arranged in a cigarette making system, wherein the cigarette making system comprises a flow sensor, a discharge conveyor belt, a pre-shredding feeder connected to the discharge conveyor belt, a dropper connected to the pre-shredding feeder, and a shredder connected to the dropper; the discharge conveyor belt is used to convey tobacco leaves in at least one tobacco leaf storage cabinet to the pre-shredding feeder, the pre-shredding feeder comprises a first silo, and the flow sensor is used to detect the flow rate of tobacco leaves transmitted on the discharge conveyor belt; the device comprises:

[0010] A current discharge data acquisition module, used to acquire the current discharge data sent by the flow sensor; wherein the current discharge data includes the flow rate of tobacco leaves transmitted on the discharge conveyor belt corresponding to the current time period;

[0011] A data determination module, used for determining the actual temporarily stored tobacco leaf data of the dropper based on the current discharge data;

[0012] An instruction generation module is used to determine a first data deviation between the actual temporarily stored tobacco leaf data of the dropper and the preset target temporarily stored tobacco leaf data, generate a first control instruction based on the first data deviation, and send the first control instruction to the conveyor belt motor so that the conveyor belt motor adjusts the discharge flow rate of the discharge conveyor belt.

[0013] The technical solution of the embodiment of the present invention is applied to a cigarette making system, which includes a flow sensor, a discharge conveyor belt, a pre-shredding feeder connected to the discharge conveyor belt, a dropper connected to the pre-shredding feeder, and a shredder connected to the dropper; the discharge conveyor belt is used to transport tobacco leaves in at least one tobacco storage cabinet to the pre-shredding feeder, the pre-shredding feeder includes a first silo, and the flow sensor is used to detect the flow rate of tobacco leaves transmitted on the discharge conveyor belt; by acquiring the current discharge data sent by the flow sensor, the actual temporary tobacco leaf data of the dropper is determined, and the first data deviation between the actual temporary tobacco leaf data of the dropper and the preset target temporary tobacco leaf data is determined, a first control instruction is generated based on the first data deviation, and the first control instruction is sent to the conveyor belt motor to enable the conveyor belt motor to adjust the discharge flow rate of the discharge conveyor belt. The technical solution of this embodiment does not need to rely on manual experience, and controls the discharge conveyor belt based on the first data deviation, so that the set discharge flow rate is more accurate; at the same time, it avoids the situation where the shredder stops or the dropper is full, which is beneficial to the stability and reliability of each equipment in the cigarette making system.

[0014] 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

[0015] 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.

[0016] Figure 1 is a flow chart of a discharge flow control method provided according to an embodiment of the present invention;

[0017] Figure 2 is a structural schematic diagram of a cigarette making system provided according to an embodiment of the present invention;

[0018] Figure 3 is a flow chart of another discharge flow control method provided according to an embodiment of the present invention;

[0019] Figure 4 is a structural schematic diagram of a discharge flow control device provided according to an embodiment of the present invention;

[0020] Figure 5 It is a structural schematic diagram of an electronic device for implementing the discharge flow control method of an embodiment of the present invention. DETAILED DESCRIPTION

[0021] 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.

[0022] 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 "etc." 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.

[0023] It should be noted that the collection, collection, updating, analysis, processing, use, transmission, storage and other aspects of user personal information involved in the technical solution of this disclosure are in compliance with the provisions of relevant laws and regulations, are used for legitimate purposes, and do not violate public order and good morals. Necessary measures are taken for user personal information to prevent illegal access to user personal information data and maintain the security of user personal information and network security.

[0024] Figure 1 This is a flow chart of a discharge flow control method provided according to an embodiment of the present invention. This embodiment can be applied to the case of controlling the flow of tobacco leaves transported by a discharge conveyor belt in a cigarette making system. The method can be executed by a discharge flow control device, which can be implemented in the form of hardware and / or software.

[0025] like Figure 1 As shown, the method of this embodiment may specifically include:

[0026] S110, obtaining current discharge data sent by the flow sensor.

[0027] It should be noted that the discharge flow control method is applied to the smoke making system. Figure 2 is a structural schematic diagram of a cigarette making system provided according to an embodiment of the present invention. Figure 2 As shown, the cigarette making system includes a flow sensor, a discharge conveyor belt, a pre-shredding feeder connected to the discharge conveyor belt, a dropper connected to the pre-shredding feeder, and a shredding machine connected to the dropper; the discharge conveyor belt is used to convey tobacco leaves in at least one tobacco leaf storage cabinet to the pre-shredding feeder, and the pre-shredding feeder includes a first silo. The cigarette making system also includes a pre-shredding feeder, an electronic belt scale, and a shredding machine.

[0028] The flow sensor is used to detect the flow of tobacco leaves transmitted on the discharge conveyor belt. The flow sensor can be installed on a bracket above the discharge conveyor belt. The flow sensor can be a three-dimensional visual volume flow sensor. The volume flow of tobacco leaves transmitted on the discharge conveyor belt can be detected by the three-dimensional visual volume flow sensor. The unit of the tobacco leaf volume flow is cubic meters per hour.

[0029] In this embodiment, the process of tobacco leaf processing includes: each tobacco leaf storage cabinet is used to store shredded tobacco leaves, the discharge conveyor belt is connected to at least one tobacco leaf storage cabinet, and the tobacco leaves in the tobacco leaf storage cabinet are transferred to the first material bin of the pre-shredding feeder, the pre-shredding feeder is connected to the dropper, and after processing the tobacco leaves in the first material bin, the processed tobacco leaves are transferred to the dropper; the dropper includes a lifting belt, and the tobacco leaves are transferred to the shredder through the lifting belt, and the shredder shreds the tobacco leaves and transfers the cut shredded tobacco to the pre-shredding feeder, and the shredded tobacco processed by the pre-shredding feeder is transferred to the electronic belt scale, and the electronic belt scale transfers the shredded tobacco to the shredder.

[0030] In a specific implementation, the flow sensor can detect the tobacco flow rate transmitted on the discharge conveyor belt in real time, and the tobacco flow rate collected in the current time period constitutes the current discharge data. The controller can obtain the current discharge data sent by the flow sensor. Among them, the current discharge data includes the tobacco flow rate transmitted on the discharge conveyor belt corresponding to the current time period. The tobacco flow rate can be a volume flow rate. The controller and the flow sensor can communicate based on the automation bus standard of Ethernet technology.

[0031] It should be noted that the tobacco flow data transported by the discharge conveyor belt can be periodically obtained from the flow sensor until the shredder stops shredding. The current time period is the acquisition period closest to the current moment; or the current time period can be a time period of a preset time from the current moment. The preset time can be 30 seconds, one minute, half an hour or one hour.

[0032] S120. Based on the current discharging data, determine the actual temporarily stored tobacco leaf data of the dropper.

[0033] The actual temporarily stored tobacco leaf data is the tobacco leaf information of the tobacco leaves stored by the dropper at the current moment; the tobacco leaf information includes the volume and / or weight of the tobacco leaves.

[0034] In this embodiment, the actual temporary tobacco leaf data of the feeder can be determined based on the working state of the shredder. Specifically, when the shredder is not working, the original tobacco leaf weight in the feeder at the start of the current time period can be determined; based on the current discharge data, the additional tobacco leaf weight of the tobacco leaf entering the feeder in the current time period can be determined, and the sum of the original tobacco leaf weight and the additional tobacco leaf weight is used as the actual temporary tobacco leaf data of the feeder.

[0035] When the shredder is working, when determining the actual temporary tobacco leaf data of the dropper, the tobacco leaf data of the tobacco leaves processed by the shredder needs to be taken into account. Optionally, based on the current discharging data, the specific implementation method of determining the actual temporary tobacco leaf data of the dropper includes: based on the preset shredding flow rate of the shredder, determining the cumulative weight of the shredding corresponding to the current time period of the shredder; based on the current discharging data, determining the cumulative transmission weight corresponding to the current time period of the discharging conveyor belt; determining the weight difference between the cumulative transmission weight and the cumulative shredding weight, and determining the actual temporary tobacco leaf data of the dropper based on the weight difference.

[0036] The preset shredded tobacco flow rate is the shredded tobacco flow rate set for the shredded tobacco cutter, and the shredded tobacco flow rate is the amount of shredded tobacco cut and processed per unit time. The amount of shredded tobacco may include volume or weight.

[0037] In a specific implementation, the preset shredded flow rate corresponding to each unit time included in the current time period can be obtained. When the amount of tobacco reflected by the preset shredded flow rate is volume, the density of the transmitted tobacco can be determined based on the tobacco properties of the transmitted tobacco. The product of the preset shredded flow rate and the density corresponding to each unit time is determined as the shredded weight flow rate for that unit time. The shredded weight flow rate corresponding to each unit time in the current time period is integrated and calculated, and the calculation result is used as the cumulative weight of the shredded. When the amount of tobacco reflected by the preset shredded flow rate is weight, the preset shredded flow rate corresponding to each unit time in the current time period can be directly integrated and calculated, and the calculation result is used as the cumulative weight of the shredded.

[0038] Furthermore, when the tobacco flow rate in the current discharging data reflects the volume of tobacco leaves, the discharging weight flow rate corresponding to the current time period can be determined based on the density of the tobacco leaves. The discharging weight flow rate corresponding to each unit time in the current time period is integrated and calculated, and the calculation result is used as the cumulative weight of the transmission. When the tobacco flow rate in the current discharging data reflects the weight of tobacco leaves, the tobacco flow rate corresponding to each unit time in the current time period can be directly integrated and calculated, and the calculation result is used as the cumulative weight of the transmission. In a specific implementation, if the amount of tobacco leaves in the dropper is 0 at the starting moment of the current time period, the weight difference between the cumulative weight of the transmission and the cumulative weight of the shredded leaves can be used as the actual temporary tobacco data of the dropper. If the amount of tobacco leaves in the dropper is not 0 at the starting moment of the current time period, the sum of the weight difference and the amount of tobacco leaves can be used as the actual temporary tobacco data.

[0039] In this embodiment, the input tobacco leaves, output tobacco leaves and the amount of tobacco leaves available at the start time of the dropper in the current time period are taken into consideration to accurately determine the actual temporarily stored tobacco leaf data.

[0040] S130, determining a first data deviation between the actual temporarily stored tobacco leaf data of the dropper and the preset target temporarily stored tobacco leaf data, generating a first control instruction based on the first data deviation, and sending the first control instruction to the conveyor belt motor so that the conveyor belt motor adjusts the discharge flow rate of the discharge conveyor belt.

[0041] It should be noted that in order to control the amount of tobacco leaves in the feeder so that it does not overflow, or when the amount of tobacco leaves is small and the space utilization rate of the feeder is low, the target temporary storage tobacco leaf data of the feeder can be set in advance, so that the available space of the feeder can be fully utilized and the overflow of tobacco leaves can be avoided as much as possible. Those skilled in the art can set the target temporary storage tobacco leaf data according to the actual volume of the feeder.

[0042] In a specific implementation, the actual temporary storage tobacco leaf data is the actual temporary storage tobacco leaf weight, and the target temporary storage tobacco leaf data is the target temporary storage tobacco leaf weight. The weight difference obtained by subtracting the target temporary storage tobacco leaf weight from the actual temporary storage tobacco leaf weight is determined as the first data deviation. A first control instruction can be generated based on the first data deviation. Exemplarily, if the first data deviation is a positive number, indicating that the actual temporary storage tobacco leaf weight is heavier than the target temporary storage tobacco leaf weight, a first control instruction for reducing the conveying speed of the discharge conveyor belt can be generated, and the first control instruction is sent to the conveyor belt motor, and the conveying speed of the discharge conveyor belt is reduced by adjusting the motor frequency of the conveyor belt motor. If the first data deviation is a negative number, indicating that the actual weight of the temporarily stored tobacco leaves is lighter than the target weight of the temporarily stored tobacco leaves, a second control instruction for increasing the conveying speed of the discharge conveyor belt can be generated, and the second control instruction can be sent to the conveyor belt motor. By adjusting the motor frequency of the conveyor belt motor, the conveying speed of the discharge conveyor belt is increased so that the weight difference between the actual weight of the temporarily stored tobacco leaves in the next time period and the target weight of the temporarily stored tobacco leaves is smaller than the weight difference between the actual weight of the temporarily stored tobacco leaves and the target weight of the temporarily stored tobacco leaves in the current time period.

[0043] Optionally, a first control instruction is generated based on the first data deviation, including: determining the product between actual temporarily stored tobacco leaf data and a preset multiple as a discharge flow correction coefficient; based on the discharge flow correction coefficient, determining a target discharge flow of the discharge conveyor belt, based on the target discharge flow, determining a target operating frequency of the conveyor belt motor, and generating a first control instruction based on the target operating frequency.

[0044] Exemplarily, the preset multiple may be 0.02.

[0045] In a specific implementation, based on the discharge flow correction coefficient, the method for determining the target discharge flow of the discharge conveyor belt includes:

[0046] Q1=Q2×(1+K1)

[0047] Among them, Q1 is the target discharge flow rate, Q2 is the preset shredding flow rate, and K1 is the discharge flow rate correction coefficient.

[0048] Furthermore, the product of the target discharge flow rate and the preset bottom belt frequency correction coefficient can be used as the target operating frequency. Through the first control instruction, the operating frequency of the conveyor belt motor can be set to the target operating frequency, so that the conveyor belt motor works according to the target operating frequency, and the weight difference between the actual temporary storage tobacco leaf weight and the target temporary storage tobacco leaf weight in the next time period is minimized. It should be noted that those skilled in the art can set the bottom belt frequency correction coefficient according to the actual application situation; for example, the bottom belt frequency correction coefficient can be set based on information such as the material, thickness, tension and load of the discharge conveyor belt. The bottom belt frequency correction coefficient can be 0.24.

[0049] In this embodiment, the discharge flow rate of the discharge conveyor belt can be periodically adjusted based on the tobacco flow rate data obtained in each cycle until the shredder stops the shredding operation.

[0050] This embodiment provides a method for generating a first control instruction, which combines the bottom belt frequency correction coefficient and the target discharge flow rate, so as to effectively control the discharge conveyor belt and try to avoid tobacco overflow in the dropper or low space occupancy.

[0051] In this embodiment, the cigarette making system also includes at least one first photoelectric tube, and the discharge conveyor belt is connected to the first silo; the first photoelectric tube is installed at a first preset height of the warehouse wall of the first silo; a first control instruction is generated based on the target operating frequency, including: based on the electrical signal sent by the first photoelectric tube, determining whether the height of the tobacco leaves stored in the first silo exceeds the first preset height; if so, updating the target operating frequency based on the first preset frequency replenishment amount, and generating the first control instruction based on the updated target operating frequency.

[0052] In a specific implementation, the electrical signal sent by the first photoelectric tube can be obtained, and the first photoelectric tube generates different electrical signals when it is blocked by tobacco leaves and when it is not blocked. Therefore, based on the electrical signal generated by the first photoelectric tube located at the first preset height, it can be determined whether the height of the tobacco leaves stored in the first silo exceeds the first preset height.

[0053] It should be noted that since the discharge conveyor belt is connected to the dropper through the first silo, changes in the target discharge flow rate will cause changes in the flow rate of tobacco leaves entering the first silo. In order to avoid the situation where the stored tobacco leaves in the first silo exceed the capacity of the first silo, the height of the stored tobacco leaves can be detected.

[0054] Specifically, the first preset height can be set as the top position of the first silo; or, the first preset height can be set as a position whose distance from the top position of the first silo is less than the preset distance. When the height of the stored tobacco leaves exceeds the first preset height, it means that the first silo is full; conversely, when the first preset height does not exceed the first preset height, it means that the first silo can continue to store tobacco leaves.

[0055] Further, when the height of the tobacco leaves stored in the first silo exceeds the first preset height, the frequency difference between the target operating frequency and the first preset frequency replenishment amount can be determined, the frequency difference can be updated to the target operating frequency, and the first control instruction can be generated based on the updated target operating frequency. When the height of the tobacco leaves stored in the first silo does not exceed the first preset height, the first control instruction can be generated according to the current target operating frequency. For example, the first preset frequency replenishment amount can be 0.05 Hz.

[0056] Before generating the first control instruction, this embodiment takes into account the storage situation of the tobacco leaves in the first silo. In order to avoid the overflow of tobacco leaves in the first silo, it determines whether the target operating frequency needs to be updated based on the height of the stored tobacco leaves to ensure the safety and stability of the cigarette making process.

[0057] The technical solution of the embodiment of the present invention is applied to a cigarette making system, which includes a flow sensor, a discharge conveyor belt, a pre-shredding feeder connected to the discharge conveyor belt, a dropper connected to the pre-shredding feeder, and a shredder connected to the dropper; the discharge conveyor belt is used to transport tobacco leaves in at least one tobacco storage cabinet to the pre-shredding feeder, the pre-shredding feeder includes a first silo, and the flow sensor is used to detect the flow rate of tobacco leaves transmitted on the discharge conveyor belt; by acquiring the current discharge data sent by the flow sensor, the actual temporary tobacco leaf data of the dropper is determined, and the first data deviation between the actual temporary tobacco leaf data of the dropper and the preset target temporary tobacco leaf data is determined, a first control instruction is generated based on the first data deviation, and the first control instruction is sent to the conveyor belt motor to enable the conveyor belt motor to adjust the discharge flow rate of the discharge conveyor belt. The technical solution of this embodiment does not need to rely on manual experience, and controls the discharge conveyor belt based on the first data deviation, so that the set discharge flow rate is more accurate; at the same time, it avoids the situation where the shredder stops or the dropper is full, which is beneficial to the stability and reliability of each equipment in the cigarette making system.

[0058] Figure 3 It is a flow chart of another discharge flow control method provided according to an embodiment of the present invention. In addition to the above embodiment, this embodiment also includes: determining the height comparison result between the height of the tobacco leaves that have fallen into the dropper and the second preset height based on the electrical signal sent by the second photoelectric tube; determining the target motor frequency of the lifting belt motor based on the height comparison result, the current motor frequency of the lifting belt motor and the second preset frequency supplement; generating a second control instruction based on the target motor frequency, and sending the second control instruction to the lifting belt motor. Among them, the explanations of the terms that are the same or corresponding to the above embodiments are not repeated here. Figure 3 As shown, the method includes:

[0059] S210, obtaining current discharge data sent by the flow sensor.

[0060] S220. Based on the current discharging data, determine the actual temporarily stored tobacco leaf data of the dropper.

[0061] S230, determining a first data deviation between the actual temporarily stored tobacco leaf data of the dropper and the preset target temporarily stored tobacco leaf data, generating a first control instruction based on the first data deviation, and sending the first control instruction to the conveyor belt motor so that the conveyor belt motor adjusts the discharge flow rate of the discharge conveyor belt.

[0062] In this embodiment, the pre-shredding feeder further includes a lifting belt for connecting the first silo and the dropper, and the cigarette making system further includes a lifting belt motor and at least one second photoelectric tube, and the second photoelectric tube is installed at a second preset height of the structural wall of the dropper. The lifting belt transports the tobacco leaves in the first silo to the dropper. The first photoelectric tube and the second photoelectric tube can be opposite-beam photoelectric tubes, and the output is a digital signal.

[0063] S240. Based on the electrical signal sent by the second photoelectric tube, determine the height comparison result between the height of the tobacco leaves that have fallen into the dropper and the second preset height; based on the height comparison result, the current motor frequency of the lifting belt motor and the second preset frequency supplement amount, determine the target motor frequency of the lifting belt motor.

[0064] In order to avoid the situation where the amount of tobacco leaves stored in the dropper is too small, resulting in the need to suspend the shredding process of the shredder due to the lack of tobacco leaves stored in the dropper, the height of the tobacco leaves that have fallen into the shredder can be detected. Specifically, the electrical signal sent by the second photoelectric tube can be periodically obtained until the shredder stops shredding. For example, the electrical signal is obtained once a minute according to a one-minute cycle. The second photoelectric tube generates different electrical signals when it is blocked by tobacco leaves and when it is not blocked. Therefore, it can be determined whether the height of the tobacco leaves that have fallen into the tobacco leaves exceeds the second preset height based on the electrical signal generated by the second photoelectric tube at the second preset height. The height comparison result may include that the height of the tobacco leaves that have fallen into the tobacco leaves exceeds the second preset height; or, the height of the tobacco leaves that have fallen into the tobacco leaves does not exceed the second preset height. Among them, the second preset height may be the middle value of the height of the dropper.

[0065] In this embodiment, the target motor frequency of the lifting belt motor is determined based on the height comparison result, the current motor frequency of the lifting belt motor and the second preset frequency replenishment amount, including: when the height comparison result is that the height of the tobacco leaves that have fallen into the tobacco leaves exceeds the second preset height, determining the frequency difference between the current motor frequency and the second preset frequency replenishment amount, and using the frequency difference as the target motor frequency; when the height comparison result is that the height of the tobacco leaves that have fallen into the tobacco leaves does not exceed the second preset height, determining the frequency sum between the current motor frequency and the second preset frequency replenishment amount, and using the frequency sum as the target motor frequency.

[0066] Specifically, when the height of the tobacco leaves that have fallen into the tobacco leaves exceeds the second preset height, in order to prevent the tobacco leaves in the defoliator from overflowing, the conveying speed of the lifting belt can be reduced by adjusting the working frequency of the lifting belt motor. Optionally, the preset cutting flow rate of the shredder at the current moment is determined, and the product of the preset cutting flow rate and the preset lifting belt frequency correction coefficient is used as the current motor frequency of the lifting belt motor; the frequency difference between the current motor frequency and the second preset frequency supplement amount is used as the target motor frequency. Exemplarily, the lifting belt frequency correction coefficient can be 0.005227111.

[0067] When the height comparison result shows that the height of the tobacco leaves that have fallen into the tobacco leaves does not exceed the second preset height, in order to avoid the situation where the shredder has no tobacco leaves to shred, the conveying speed of the lifting belt can be increased by adjusting the working frequency of the lifting belt motor. Optionally, the frequency and value between the current motor frequency and the second preset frequency supplement amount is used as the target motor frequency. For example, the second preset frequency spectrum supplement amount can be 0.05 Hz.

[0068] S250: Generate a second control instruction based on the target motor frequency, and send the second control instruction to the lifting belt motor.

[0069] Specifically, a second control instruction can be generated based on the target motor frequency, and the second control instruction can be sent to the lifting belt motor to control the lifting belt to work. Further, based on the electrical signal sent by the second photoelectric tube obtained in each cycle, the motor frequency of the lifting belt motor can be continuously adjusted until the wire cutting machine stops cutting.

[0070] This embodiment determines the relationship between the height of the tobacco leaves in the dropper and the second preset height through the electrical signal of the second photoelectric tube, thereby avoiding the situation where the shredder stops working due to having no tobacco leaves to cut, and also avoiding the situation where the tobacco leaves in the dropper overflow, thereby improving the operating stability and reliability of the lifting belt.

[0071] In this embodiment, the cigarette making system also includes at least one distance measuring sensor, and a pre-drying wire feeder connected to the wire cutter, the pre-drying wire feeder includes a second silo and a material distribution crane running in the second silo; the wire cutter includes a knife roller and a wire cutting controller; the distance measuring sensor is used to detect the distance between the material distribution crane and the warehouse wall of the second silo in the traveling direction.

[0072] The distance sensor emits a light beam to the end of the fabric crane close to the distance sensor. The measurement range of the distance sensor is (0-15) meters, and the measurement output is a (4-20) mA analog signal. Exemplarily, the distance sensor can be connected to the warehouse wall at the tail of the second silo. The fabric crane travels from the head of the second silo to the tail of the silo, and the distance between the head of the silo and the tail of the silo is L; the length of the body of the fabric crane is less than L. The distance sensor can detect the distance between the tail of the silo and one end of the fabric crane.

[0073] In this embodiment, the method also includes: obtaining the current distance value between the cloth vehicle and the warehouse wall of the second silo in the driving direction at the current collection moment collected by the ranging sensor; determining the actual temporary tobacco data in the second silo based on the current distance value, and determining the second data deviation corresponding to the second silo based on the preset temporary tobacco data and the actual temporary tobacco data corresponding to the second silo; determining the target speed of the knife roller based on the second data deviation, generating a third control instruction based on the target speed of the knife roller, and sending the third control instruction to the wire cutting controller to control the knife roller to operate at the target speed of the knife roller.

[0074] The current distance value is the distance between the cloth vehicle in the driving direction and the warehouse wall on the side where the distance measuring sensor is installed.

[0075] In a specific implementation, the current distance value corresponding to the current collection time collected by the distance measuring sensor can be periodically obtained during the material distribution process. Based on the current distance value, the actual temporary tobacco data in the second silo is determined, including: based on the current distance value and the preset movement mode of the material distribution vehicle, the actual temporary tobacco data in the second silo is determined.

[0076] In this embodiment, the body length of the distribution crane is half of the length of the second silo, that is, the body length of the distribution crane is set to 1 / 2L, so as to achieve the effect of fully distributing the material in the silo. The tail of the silo of the second silo is the discharging end, and the head of the silo is the feeding end. The distribution crane adopts the pile-finding method to distribute the material in the silo. Specifically, the distribution process may include two stages: the front half silo distribution and the back half silo distribution. The front half silo distribution refers to distributing the material from the half silo corresponding to the discharging end of the second silo, that is, the distribution belt corresponding to the distribution crane rotates forward, and the tobacco is evenly distributed in the front half of the second silo. As the height of the tobacco pile increases, the distribution crane retreats to continue distributing and ensure uniform distribution. When the distribution crane retreats to the midpoint of the second silo, that is, 1 / 2L, the distribution of the front half silo is completed, and the distribution crane can be reversed to prepare to start distributing the back half silo. Specifically, the cloth belt reverses, and the cloth carriage starts to cloth from the center of the second silo to the feed end. As the tobacco accumulation height increases, the cloth carriage continues to retreat to ensure that the entire rear half of the silo can be clothed evenly. When the cloth carriage retreats to the feed section of the second silo, the cloth of the rear half of the silo is completed.

[0077] The actual temporarily stored tobacco data is the ratio of the volume of stored tobacco to the total volume of the second silo. The preset movement mode is: the material distribution vehicle is close to the head of the second silo and moves toward the tail of the silo until the material distribution of the first half of the second silo is completed, and the material distribution vehicle reverses the movement.

[0078] In this embodiment, the current distribution stage can be determined based on the current distance value, the preset movement mode and the movement direction of the distribution vehicle. Specifically, when the movement direction is moving toward the tail of the silo, it means that the distribution area is the front half of the silo distribution, and the actual temporarily stored tobacco data is:

[0079] S=(H1-H2) / H1*50%

[0080] Among them, S represents the actual temporarily stored tobacco data, H1 is the distance value measured by the distance measuring sensor when the cloth carriage is close to the head of the second silo, and H2 is the current distance value.

[0081] When the movement direction is toward the head of the silo, it means that the material distribution area is the rear half of the silo, and the actual temporarily stored tobacco data is:

[0082] S=[1+(H1-H2)] / H1*50%

[0083] Among them, S represents the actual temporarily stored tobacco data, H1 is the distance value measured by the distance measuring sensor when the cloth carriage is close to the head of the second silo, and H2 is the current distance value.

[0084] This embodiment sets different ways of determining the actual temporarily stored tobacco data for different material distribution stages, which is beneficial to improving the accuracy and convenience of determining the actual temporarily stored tobacco data.

[0085] Furthermore, a difference obtained by subtracting the actual temporarily stored tobacco data from the preset temporarily stored tobacco data may be determined, and the difference may be used as the second data deviation. Those skilled in the art may determine the preset temporarily stored tobacco data according to actual application conditions, and this embodiment does not limit this.

[0086] In order to eliminate the deviation between the actual amount of temporarily stored tobacco in the second silo and the preset amount of temporarily stored tobacco, so that the tobacco in the second silo meets the set requirements and ensures the continuity of shredded tobacco cutting, the target speed of the knife roller can be determined based on the determined second data deviation, and a third control instruction is generated based on the target speed of the knife roller. The third control instruction is sent to the shredded tobacco cutting controller to control the knife roller to operate at the target speed of the knife roller, thereby adjusting the shredded tobacco flow rate by adjusting the speed of the knife roller, thereby reducing the deviation between the actual amount of temporarily stored tobacco and the preset amount of temporarily stored tobacco.

[0087] Specifically, based on the second data deviation, the implementation method of determining the target speed of the knife roller includes: taking the product of the second data deviation and the preset coefficient as the wire cutting flow correction coefficient; determining the target wire cutting flow of the wire cutter based on the wire cutting flow correction coefficient and the preset wire drying flow; determining the target speed of the knife roller of the wire cutter based on the target wire cutting flow, the preset wire cutting machine knife door height, the preset wire cutting width and the preset knife roller speed coefficient.

[0088] Optionally, the preset coefficient may be 0.03. The preset wire drying flow rate is a preset wire drying flow rate of the wire drying feeder. The product of the preset coefficient and the second data deviation may be used as a wire cutting flow rate correction coefficient. Based on the wire cutting flow rate correction coefficient and the preset wire drying flow rate, the target wire cutting flow rate of the wire cutting machine may be determined by:

[0089] Q3=Q4*(1+K2)

[0090] Among them, Q3 is the target wire cutting flow rate, Q4 is the preset wire drying flow rate, that is, the flow rate set by the electronic belt scale before wire drying issued by the wire making central control work order management system; K2 is the wire cutting flow rate correction coefficient.

[0091] When the second data deviation is less than 0, the target shredded wire flow rate should be less than the preset shredded wire flow rate to avoid stopping shredded wire due to the second silo being full. When the second data deviation is greater than 0, the target shredded wire flow rate needs to be greater than the preset shredded wire flow rate to avoid low occupancy of the second silo.

[0092] In a specific implementation, the product of the preset wire cutting machine blade door height and the preset wire cutting width can be determined as the first value; the ratio between the preset blade roller speed coefficient and the first value is determined, and the product between the ratio and the target wire cutting flow rate is determined, and the product is used as the blade roller target speed. In the case where the product between the determined ratio and the target wire cutting flow rate is a decimal, a rounding operation can be performed, and the rounded value is used as the blade roller target speed. Among them, the preset blade roller speed coefficient can be 5.853097.

[0093] In this embodiment, the rotation speed of the cutter roller changes with the change of the second data deviation of the material in the feeder silo, ensuring that the shredder will not stop shredding due to the feeder being full or short of material before drying, thereby improving the operating stability and reliability of the cutter roller of the shredder.

[0094] Figure 4 1 is a schematic diagram of the structure of a discharge flow control device provided according to an embodiment of the present invention, and the device is used to execute the discharge flow control method provided in any of the above embodiments. The device and the discharge flow control method of the above embodiments belong to the same inventive concept, and the details not described in detail in the embodiment of the discharge flow control device can refer to the embodiment of the above discharge flow control method.

[0095] In this embodiment, the device is arranged in a cigarette making system, which includes a flow sensor, a discharge conveyor belt, a pre-shredding feeder connected to the discharge conveyor belt, a dropper connected to the pre-shredding feeder, and a shredder connected to the dropper; the discharge conveyor belt is used to transport tobacco leaves in at least one tobacco leaf storage cabinet to the pre-shredding feeder, the pre-shredding feeder includes a first silo, and the flow sensor is used to detect the flow rate of tobacco leaves transmitted on the discharge conveyor belt; Figure 4 As shown, the device comprises:

[0096] The current discharge data acquisition module 10 is used to acquire the current discharge data sent by the flow sensor; wherein the current discharge data includes the tobacco flow rate transmitted on the discharge conveyor belt corresponding to the current time period;

[0097] The data determination module 11 is used to determine the actual temporary tobacco leaf data of the dropper based on the current discharge data;

[0098] The instruction generation module 12 is used to determine the first data deviation between the actual temporary storage tobacco leaf data of the dropper and the preset target temporary storage tobacco leaf data, generate a first control instruction based on the first data deviation, and send the first control instruction to the conveyor belt motor to enable the conveyor belt motor to adjust the discharge flow rate of the discharge conveyor belt.

[0099] Based on any optional technical solution in the embodiment of the present invention, optionally, the data determination module 11 includes:

[0100] The shredded wire cumulative weight determination submodule is used to determine the shredded wire cumulative weight corresponding to the shredded wire cutting machine in the current time period based on the preset shredded wire cutting flow rate of the shredded wire cutting machine;

[0101] The transmission cumulative weight determination submodule is used to determine the transmission cumulative weight corresponding to the discharge conveyor belt in the current time period based on the current discharge data;

[0102] The weight difference determination submodule is used to determine the weight difference between the cumulative transmission weight and the cumulative shredded weight, and determine the actual temporary tobacco leaf data of the dropper based on the weight difference.

[0103] Based on any optional technical solution in the embodiment of the present invention, optionally, the instruction generation module 12 includes:

[0104] The product determination submodule is used to determine the product between the actual temporarily stored tobacco leaf data and the preset multiple as a discharge flow correction coefficient;

[0105] The target discharge flow determination submodule is used to determine the target discharge flow of the discharge conveyor belt based on the discharge flow correction coefficient, determine the target operating frequency of the conveyor belt motor based on the target discharge flow, and generate a first control instruction based on the target operating frequency.

[0106] On the basis of any optional technical solution in the embodiment of the present invention, optionally, the cigarette making system further comprises at least one first photoelectric tube, the discharging conveyor belt is connected to the first silo; the first photoelectric tube is installed at a first preset height of the warehouse wall of the first silo;

[0107] The target discharge flow determination submodule includes:

[0108] A determination unit is used to determine whether the height of the tobacco leaves stored in the first silo exceeds a first preset height based on the electrical signal sent by the first photoelectric tube; if so, the target operating frequency is updated based on the first preset frequency replenishment amount, and a first control instruction is generated based on the updated target operating frequency.

[0109] On the basis of any optional technical solution in the embodiment of the present invention, optionally, the pre-shredding feeder further includes a lifting belt for connecting the first hopper and the dropper, the cigarette making system further includes a lifting belt motor and at least one second photoelectric tube, and the second photoelectric tube is installed at a second preset height of the structural wall of the dropper; the device further includes:

[0110] A height comparison result determination module is used to determine a height comparison result between the height of the tobacco leaves that have fallen into the dropper and a second preset height based on the electrical signal sent by the second photoelectric tube;

[0111] a target motor frequency determination module, configured to determine a target motor frequency of the lifting belt motor based on the height comparison result, the current motor frequency of the lifting belt motor, and a second preset frequency supplement amount;

[0112] The instruction sending module is used to generate a second control instruction based on the target motor frequency and send the second control instruction to the lifting belt motor.

[0113] Based on any optional technical solution in the embodiments of the present invention, optionally, the target motor frequency determination module includes:

[0114] A frequency difference determination submodule, for determining a frequency difference between the current motor frequency and the second preset frequency supplement amount when the height comparison result shows that the height of the tobacco leaves that have fallen into the tobacco leaves exceeds the second preset height, and using the frequency difference as the target motor frequency;

[0115] The frequency and value determination submodule is used to determine the frequency and value between the current motor frequency and the second preset frequency supplement amount when the height comparison result shows that the height of the tobacco leaves that have fallen into the tobacco leaves does not exceed the second preset height, and use the frequency and value as the target motor frequency.

[0116] On the basis of any optional technical solution in the embodiments of the present invention, optionally, the cigarette making system further includes at least one distance measuring sensor, and a pre-drying feeder connected to the shredder, the pre-drying feeder includes a second silo and a material distribution crane running in the second silo; the shredder includes a knife roller and a shredder controller; the distance measuring sensor is used to detect the distance between the material distribution crane and the warehouse wall of the second silo in the driving direction; the device also includes:

[0117] A current distance value acquisition module is used to acquire the current distance value between the cloth driving vehicle and the warehouse wall of the second silo in the driving direction at the current acquisition moment acquired by the distance measuring sensor;

[0118] A second data deviation determination module is used to determine the actual temporarily stored tobacco data in the second silo based on the current distance value, and determine the second data deviation corresponding to the second silo based on the preset temporarily stored tobacco data and the actual temporarily stored tobacco data corresponding to the second silo;

[0119] The third control instruction generating module is used to determine the target speed of the knife roller based on the second data deviation, generate a third control instruction based on the target speed of the knife roller, and send the third control instruction to the wire cutting controller to control the knife roller to operate at the target speed of the knife roller.

[0120] Based on any optional technical solution in the embodiment of the present invention, optionally, the body length of the material distribution crane is half of the length of the second silo; the second data deviation determination module includes:

[0121] The actual temporarily stored tobacco data determination submodule is used to determine the actual temporarily stored tobacco data of the second silo based on the current distance value and the preset movement mode of the material distribution crane.

[0122] Based on any optional technical solution in the embodiments of the present invention, optionally, the third control instruction generating module includes:

[0123] A shredded flow rate correction coefficient determination submodule, used to take the product of the second data deviation and the preset coefficient as the shredded flow rate correction coefficient;

[0124] A target shred flow rate determination submodule is used to determine a target shred flow rate of the shred cutter based on a shred flow rate correction coefficient and a preset shred drying flow rate;

[0125] The knife roller target transfer determination submodule is used to determine the knife roller target speed of the wire cutter based on the target wire cutting flow rate, the preset wire cutting machine knife door height, the preset wire cutting width and the preset knife roller speed coefficient.

[0126] The technical solution of the embodiment of the present invention is applied to a cigarette making system, which includes a flow sensor, a discharge conveyor belt, a pre-shredding feeder connected to the discharge conveyor belt, a dropper connected to the pre-shredding feeder, and a shredder connected to the dropper; the discharge conveyor belt is used to transport tobacco leaves in at least one tobacco storage cabinet to the pre-shredding feeder, the pre-shredding feeder includes a first silo, and the flow sensor is used to detect the flow rate of tobacco leaves transmitted on the discharge conveyor belt; by acquiring the current discharge data sent by the flow sensor, the actual temporary tobacco leaf data of the dropper is determined, and the first data deviation between the actual temporary tobacco leaf data of the dropper and the preset target temporary tobacco leaf data is determined, a first control instruction is generated based on the first data deviation, and the first control instruction is sent to the conveyor belt motor to enable the conveyor belt motor to adjust the discharge flow rate of the discharge conveyor belt. The technical solution of this embodiment does not need to rely on manual experience, and controls the discharge conveyor belt based on the first data deviation, so that the set discharge flow rate is more accurate; at the same time, it avoids the situation where the shredder stops or the dropper is full, which is beneficial to the stability and reliability of each equipment in the cigarette making system.

[0127] It is worth noting that in the embodiment of the above-mentioned discharge flow control device, the various units and modules included are only divided according to functional logic, but are not limited to the above-mentioned division, as long as the corresponding functions can be achieved; in addition, the specific names of the functional units are only for the convenience of distinguishing each other, and are not used to limit the scope of protection of the present invention.

[0128] Figure 5 1 is a schematic diagram of the structure of an electronic device for implementing the discharge flow control method of an embodiment of the present invention. The electronic device is intended to represent various forms of digital computers, such as laptop computers, desktop computers, workbenches, personal digital assistants, servers, blade servers, mainframe computers, and other suitable computers. The electronic device may 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.

[0129] like Figure 5As shown, the electronic device 20 includes at least one processor 21, and a memory connected to the at least one processor 21, such as a read-only memory (ROM) 22, a random access memory (RAM) 23, etc., wherein the memory stores a computer program that can be executed by at least one processor, and the processor 21 can perform various appropriate actions and processes according to the computer program stored in the read-only memory (ROM) 22 or the computer program loaded from the storage unit 28 to the random access memory (RAM) 23. In RAM23, various programs and data required for the operation of the electronic device 20 can also be stored. The processor 21, ROM22 and RAM23 are connected to each other through a bus 24. An input / output (I / O) interface 25 is also connected to the bus 24.

[0130] A number of components in the electronic device 20 are connected to the I / O interface 25, including: an input unit 26, such as a keyboard, a mouse, etc.; an output unit 27, such as various types of displays, speakers, etc.; a storage unit 28, such as a disk, an optical disk, etc.; and a communication unit 29, such as a network card, a modem, a wireless communication transceiver, etc. The communication unit 29 allows the electronic device 20 to exchange information / data with other devices through a computer network such as the Internet and / or various telecommunication networks.

[0131] The processor 21 may be a variety of general and / or special processing components with processing and computing capabilities. Some examples of the processor 21 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 21 executes the various methods and processes described above, such as a discharge flow control method.

[0132] In some embodiments, the discharge flow control method can be implemented as a computer program, which is tangibly contained in a computer-readable storage medium, such as a storage unit 28. In some embodiments, part or all of the computer program can be loaded and / or installed on the electronic device 20 via the ROM 22 and / or the communication unit 29. When the computer program is loaded into the RAM 23 and executed by the processor 21, one or more steps of the discharge flow control method described above can be performed. Alternatively, in other embodiments, the processor 21 can be configured to perform the discharge flow control method in any other appropriate manner (for example, by means of firmware).

[0133] 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.

[0134] 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.

[0135] 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.

[0136] 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).

[0137] 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.

[0138] 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.

[0139] This embodiment also provides a computer program product, including a computer program, which, when executed by a processor, implements the discharge flow control method provided in any embodiment of the present application.

[0140] In the process of implementation, the computer program product can be written in one or more programming languages ​​or a combination thereof to perform the computer program code of the present invention, including object-oriented programming languages, such as Java, Smalltalk, C++, and conventional procedural programming languages, such as "C" language or similar programming languages. The program code can be executed entirely on the user's computer, partially on the user's computer, as a separate software package, partially on the user's computer and partially on a remote computer, or entirely on a remote computer or server. In the case of a remote computer, the remote computer can be connected to the user's computer through any type of network, including a local area network (LAN) or a wide area network (WAN), or can be connected to an external computer (for example, using an Internet service provider to connect through the Internet).

[0141] 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.

[0142] 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 discharge flow, characterized in that: Applied to a cigarette making system, the cigarette making system comprises a flow sensor, a discharge conveyor belt, a pre-shredding feeder connected to the discharge conveyor belt, a dropper connected to the pre-shredding feeder, and a shredder connected to the dropper; the discharge conveyor belt is used to convey tobacco leaves in at least one tobacco leaf storage cabinet to the pre-shredding feeder, the pre-shredding feeder comprises a first silo, and the flow sensor is used to detect the flow rate of tobacco leaves transmitted on the discharge conveyor belt; the method comprises: Acquire the current discharge data sent by the flow sensor; wherein the current discharge data includes the flow rate of tobacco leaves transmitted on the discharge conveyor belt corresponding to the current time period; Based on the current discharge data, determining actual temporary tobacco leaf data of the dropper; Determine a first data deviation between the actual temporarily stored tobacco leaf data of the dropper and the preset target temporarily stored tobacco leaf data, generate a first control instruction based on the first data deviation, and send the first control instruction to the conveyor belt motor so that the conveyor belt motor adjusts the discharge flow rate of the discharge conveyor belt.

2. The method according to claim 1, characterized in that The step of determining actual temporarily stored tobacco leaf data of the dropper based on the current discharge data includes: Based on the preset cutting flow rate of the cutting machine, determining the cumulative cutting weight of the cutting machine corresponding to the current time period; Based on the current discharge data, determining the cumulative transmission weight of the discharge conveyor belt corresponding to the current time period; The weight difference between the cumulative weight of transmission and the cumulative weight of shredded tobacco is determined, and the actual temporary tobacco leaf data of the dropper is determined based on the weight difference.

3. The method according to claim 1, characterized in that The generating a first control instruction based on the first data deviation includes: Determine the product between the actual temporarily stored tobacco leaf data and the preset multiple as a discharge flow correction coefficient; Based on the discharge flow correction coefficient, the target discharge flow of the discharge conveyor belt is determined, based on the target discharge flow, the target operating frequency of the conveyor belt motor is determined, and based on the target operating frequency, the first control instruction is generated.

4. The method according to claim 3, characterized in that The cigarette making system further comprises at least one first photoelectric tube, the discharging conveyor belt is connected to the first silo; the first photoelectric tube is installed at a first preset height on the silo wall of the first silo; The generating the first control instruction based on the target operating frequency includes: Based on the electrical signal sent by the first photoelectric tube, determining whether the height of the tobacco leaves stored in the first silo exceeds the first preset height; If so, the target operating frequency is updated based on the first preset frequency supplement amount, and the first control instruction is generated based on the updated target operating frequency.

5. The method according to claim 1, characterized in that The pre-shredding feeder further comprises a lifting belt for connecting the first hopper and the dropper, the cigarette making system further comprises a lifting belt motor and at least one second photoelectric tube, the second photoelectric tube is installed at a second preset height of the structural wall of the dropper; the method further comprises: Based on the electrical signal sent by the second photoelectric tube, determining a height comparison result between the height of the tobacco leaves that have fallen into the dropper and the second preset height; determining a target motor frequency of the lifting belt motor based on the height comparison result, the current motor frequency of the lifting belt motor, and a second preset frequency supplement amount; A second control instruction is generated based on the target motor frequency, and the second control instruction is sent to the lifting belt motor.

6. The method according to claim 5, characterized in that The determining the target motor frequency of the lifting belt motor based on the height comparison result, the current motor frequency of the lifting belt motor and the second preset frequency supplement amount comprises: When the height comparison result shows that the height of the tobacco leaves that have fallen into the tobacco leaves exceeds the second preset height, determining the frequency difference between the current motor frequency and the second preset frequency supplement amount, and using the frequency difference as the target motor frequency; When the height comparison result is that the height of the tobacco leaves that have fallen into the tobacco leaves does not exceed the second preset height, the frequency and value between the current motor frequency and the second preset frequency supplement amount are determined, and the frequency and value are used as the target motor frequency.

7. The method according to claim 1, characterized in that The cigarette making system further includes at least one distance measuring sensor and a pre-drying feeder connected to the shredder, wherein the pre-drying feeder includes a second silo and a material distribution crane running in the second silo; the shredder includes a knife roller and a shredder controller; the distance measuring sensor is used to detect the distance between the material distribution crane and the warehouse wall of the second silo in the driving direction; the method further includes: Acquire the current distance value between the cloth driving vehicle and the warehouse wall of the second silo in the driving direction at the current collection moment collected by the distance measuring sensor; Based on the current distance value, determine the actual temporarily stored tobacco data in the second silo, and based on the preset temporarily stored tobacco data corresponding to the second silo and the actual temporarily stored tobacco data, determine the second data deviation corresponding to the second silo; Based on the second data deviation, a target rotation speed of the knife roller is determined, a third control instruction is generated based on the target rotation speed of the knife roller, and the third control instruction is sent to the wire cutting controller to control the knife roller to operate at the target rotation speed of the knife roller.

8. The method according to claim 7, characterized in that The body length of the material distribution vehicle is half of the length of the second silo; and the actual temporarily stored tobacco data in the second silo is determined based on the current distance value, including: Based on the current distance value and the preset movement mode of the material distribution crane, the actual temporary storage tobacco data of the second silo is determined.

9. The method according to claim 7, characterized in that: The step of determining a target rotation speed of the knife roller based on the second data deviation includes: The product of the second data deviation and the preset coefficient is used as the wire cutting flow correction coefficient; Determining a target wire cutting flow rate of the wire cutting machine based on the wire cutting flow rate correction coefficient and the preset wire drying flow rate; The target rotation speed of the blade roller of the blade cutting machine is determined based on the target cutting flow rate, the preset blade door height of the blade cutting machine, the preset cutting width and the preset blade roller rotation speed coefficient.

10. A discharge flow control device, characterized in that: The device is arranged in a cigarette making system, the cigarette making system includes a flow sensor, a discharge conveyor belt, a pre-shredding feeder connected to the discharge conveyor belt, a dropper connected to the pre-shredding feeder, and a shredding machine connected to the dropper; the discharge conveyor belt is used to transport tobacco leaves in at least one tobacco leaf storage cabinet to the pre-shredding feeder, the pre-shredding feeder includes a first silo, and the flow sensor is used to detect the flow rate of tobacco leaves transmitted on the discharge conveyor belt; the device includes: A current discharge data acquisition module, used to acquire the current discharge data sent by the flow sensor; wherein the current discharge data includes the flow rate of tobacco leaves transmitted on the discharge conveyor belt corresponding to the current time period; A data determination module, used for determining the actual temporarily stored tobacco leaf data of the dropper based on the current discharge data; An instruction generation module is used to determine a first data deviation between the actual temporarily stored tobacco leaf data of the dropper and the preset target temporarily stored tobacco leaf data, generate a first control instruction based on the first data deviation, and send the first control instruction to the conveyor belt motor so that the conveyor belt motor adjusts the discharge flow rate of the discharge conveyor belt.

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