A method of inserting a tobacco block and a computer storage medium

Abstract

The application discloses a tobacco block inserting and cutting method. The tobacco block is transported to an inserting and cutting mechanism for cutting by a conveying mechanism. The conveying mechanism comprises a conveying roller and a conveying belt sleeved on the conveying roller. The shaft end of the conveying roller is connected with a motor. The motor can drive the conveying roller to rotate around the axis thereof. The tobacco block inserting and cutting method comprises the following steps. A function relationship between the motor frequency and the conveying belt transmission speed is established. The actual running frequency of the motor at the current time is obtained every interval preset time. The actual running frequency is substituted into the function relationship to obtain the actual transmission speed of the conveying belt at the time. The advancing distance of the tobacco block on the conveying belt is calculated according to the actual transmission speed of the conveying belt at each time. The tobacco block is cut based on the advancing distance. The tobacco block can be uniformly cut, so that the stability of the subsequent process is ensured. The application further discloses a computer storage medium.

Description

Technical Field

[0001] This invention relates to the field of cigarette production technology, and in particular to a method for separating tobacco blocks and a computer storage medium. Background Technology

[0002] Currently, in the tobacco industry, before processing tobacco leaves, a loosening and rehydration process is required to increase their resilience and reduce breakage during subsequent processing. Since the initial tobacco leaves are stored in whole bales, they need to be cut into smaller pieces before loosening and rehydration. Specifically, after passing through a slicing machine, the bales are further transported to a splitting machine for splitting. Split pieces are more conducive to the loosening and rehydration process. However, currently, the tobacco pieces cut by the splitting machine often vary in size, and sometimes the excessively large size of the split pieces directly affects the effectiveness of the loosening and rehydration process. Summary of the Invention

[0003] The purpose of this invention is to solve the technical problem that tobacco blocks often exhibit inconsistent sizes after being cut by a splitting machine in the prior art. This invention provides a tobacco block splitting method that achieves uniform splitting of the tobacco blocks.

[0004] Based on this, an embodiment of the present invention discloses a method for cutting tobacco blocks. The tobacco blocks are transported by a conveying mechanism to a cutting mechanism for cutting. The conveying mechanism includes a conveying roller and a conveyor belt sleeved on the conveying roller. A motor is connected to the shaft end of the conveying roller, and the motor can drive the conveying roller to rotate around its axis. The method for cutting tobacco blocks includes:

[0005] Function establishment steps: Establish the functional relationship between motor frequency and conveyor belt speed;

[0006] Speed ​​acquisition steps: The actual operating frequency of the motor at the current moment is acquired once at a preset time interval, and the actual operating frequency is substituted into the function to obtain the actual transmission speed of the conveyor belt at that moment;

[0007] Cutting steps: Calculate the travel distance of the smoke block on the conveyor belt based on the actual transport speed of the conveyor belt at each moment, and cut the smoke block based on the travel distance.

[0008] By adopting the above technical solution, uniform or near-uniform interpolation of the smoke block can be achieved, which facilitates the stability of subsequent processes.

[0009] According to another specific embodiment of the present invention, the cutting step includes:

[0010] Sub-distance calculation steps: After obtaining the actual transmission speed of the conveyor belt each time, multiply the actual transmission speed by the preset time to obtain the travel sub-distance within that time period;

[0011] Accumulation step: After obtaining each sub-distance of a movement, the obtained sub-distances of the movement are accumulated and summed, and the accumulation result is judged;

[0012] If the accumulated result is less than the preset value, return to the previous step to perform the accumulation step;

[0013] If the accumulated result is greater than or equal to the preset value, the interpolation mechanism is controlled to cut the smoke block, the accumulated result is cleared to zero, and then the process returns to the accumulation step.

[0014] According to another specific embodiment of the present invention, the preset value is the ratio of the length of the smoke block to a positive integer.

[0015] According to another specific embodiment of the present invention, the function establishment step includes:

[0016] Obtain the number of pole pairs of the rotating magnetic field of the motor, the radius of the conveyor roller, and the thickness of the conveyor belt;

[0017] The first relationship between motor frequency and motor speed is constructed based on the number of pole pairs of the rotating magnetic field.

[0018] Based on the first relational expression, the radius of the conveyor roller, and the thickness of the conveyor belt, a functional relationship between the conveyor belt speed and the motor frequency is constructed.

[0019] According to another specific embodiment of the present invention, the function establishment step further includes:

[0020] Determine whether the motor is equipped with a speed reducer; if so, obtain the corresponding speed reduction ratio.

[0021] The first relationship between motor frequency and motor speed is constructed based on the number of pole pairs of the rotating magnetic field and the reduction ratio.

[0022] According to another specific embodiment of the present invention, the first relation is:

[0023]

[0024] Where N represents the motor speed, measured in revolutions per minute; F represents the motor frequency, measured in Hertz; i represents the reduction ratio; and P represents the number of pole pairs of the rotating magnetic field.

[0025] According to another specific embodiment of the present invention, the functional relationship between the conveyor belt speed and the motor frequency is as follows:

[0026]

[0027] Where v represents the conveyor belt speed in meters per second; R represents the radius of the conveyor roller in meters; H represents the thickness of the conveyor belt in meters; F represents the motor frequency in Hertz; i represents the reduction ratio; and P represents the number of pole pairs of the rotating magnetic field.

[0028] According to another specific embodiment of the present invention, the preset time is 0.02 seconds.

[0029] Accordingly, embodiments of the present invention also disclose a computer-readable storage medium storing instructions that, when executed on a computer, cause the computer to perform the above-described smoke block interleaving method. Attached Figure Description

[0030] Figure 1 This diagram shows a flowchart of a smoke block interpolation method provided by a specific embodiment of the present invention;

[0031] Figure 2 This diagram illustrates the structure of an electronic device according to a specific embodiment of the present invention.

[0032] Figure 3 This diagram illustrates the structural block diagram of a system-on-a-chip provided in a specific embodiment of the present invention. Detailed Implementation

[0033] The following specific embodiments illustrate the implementation of the present invention. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. Although the description of the present invention is presented in conjunction with preferred embodiments, this does not mean that the features of the invention are limited to these embodiments. On the contrary, the purpose of describing the invention in conjunction with embodiments is to cover other options or modifications that may be derived based on the claims of the present invention. To provide a deep understanding of the invention, many specific details will be included in the following description. The invention may also be implemented without using these details. Furthermore, to avoid confusion or obscuring the focus of the invention, some specific details will be omitted in the description. It should be noted that, unless otherwise specified, the embodiments and features in the embodiments of the present invention can be combined with each other.

[0034] It should be noted that in this specification, similar reference numerals and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0035] In the description of this embodiment, it should be noted that the terms "first," "second," etc., are only used for distinguishing descriptions and should not be construed as indicating or implying relative importance.

[0036] To make the objectives, technical solutions, and advantages of the present invention clearer, the embodiments of the present invention will be described in further detail below with reference to the accompanying drawings.

[0037] Generally, the smoke block is transported by a conveying mechanism to a cutting mechanism for cutting. The conveying mechanism includes a conveying roller and a conveyor belt fitted on the conveying roller. A motor is connected to the shaft end of the conveying roller, and the motor can drive the conveying roller to rotate around its axis.

[0038] The applicant discovered that the reason why the tobacco blocks were of different sizes after being separated was that the insertion speed of the separating machine was fixed, but the speed of the conveyor belt transporting the tobacco blocks was determined by the frequency of the conveyor roller motor. However, the frequency of the motor was affected by the subsequent electronic scale, which caused the frequency itself to change with the state of the electronic scale. This resulted in inconsistent widths of the tobacco blocks after separation, which was detrimental to the stability of subsequent processing.

[0039] Based on this, one embodiment of the present invention provides a method for inserting smoke blocks, such as... Figure 1 As shown, the method for inserting and separating smoke blocks specifically includes the following steps:

[0040] Function establishment step S1: Establish the functional relationship between motor frequency and conveyor belt speed.

[0041] Speed ​​acquisition step S2: The actual operating frequency of the motor at the current moment is acquired once at a preset time interval, and the actual operating frequency is substituted into the function to obtain the actual transmission speed of the conveyor belt at that moment.

[0042] Specifically, a frequency converter is connected to the motor. The frequency converter can be used to control the motor frequency, and the frequency converter usually communicates with the PLC via Ethernet. The PLC can read the frequency sent to the motor by the frequency converter at any time to know the motor frequency at each moment.

[0043] Cutting step S3: Calculate the travel distance of the smoke block on the conveyor belt based on the actual transport speed of the conveyor belt at each moment, and cut the smoke block based on the travel distance.

[0044] By adopting this scheme, when the smoke block reaches the insertion position, the insertion signal is sent to the insertion machine by calculating the running length of the smoke block, so as to achieve the purpose of uniform insertion.

[0045] Specifically, to achieve uniform cutting of the tobacco block through interpolation, a preset value can be set based on the actual length of the tobacco block and the intended number of pieces it will be cut into. The travel distance of the tobacco block is compared with this preset value in real time to determine whether cutting should be performed. More specifically, the calculation of the travel distance only begins when the head end of the tobacco block reaches the interpolation position. That is, the travel distance of the tobacco block does not need to be calculated before it reaches the interpolation position.

[0046] Optionally, a detection device can be installed on the insertion mechanism to detect the head end face of the smoke block (the end of the smoke block closest to the direction of movement of the smoke block is considered the head). When the detection device detects the head end face of the smoke block, it proves that the smoke block has reached the insertion position. At this time, the PLC can start calculating the travel distance of the smoke block, i.e., execute step S3. Specifically, the detection device can be set to correspond to the insertion blade position in the insertion mechanism.

[0047] For example, cutting step S3 specifically includes the following steps:

[0048] Sub-distance calculation step S31: After obtaining the actual transmission speed of the conveyor belt each time, multiply the actual transmission speed by the preset time to obtain the travel sub-distance within that time period.

[0049] Accumulation step S32: After obtaining each sub-distance of a journey, the obtained sub-distances of the journey are accumulated and summed, and the accumulation result is judged;

[0050] If the accumulated result is less than the preset value, return to execute the accumulation step S32;

[0051] If the accumulated result is greater than or equal to the preset value, the interpolation mechanism is controlled to cut the smoke block, the accumulated result is cleared to zero, and then the process returns to the execution of the accumulation step S32.

[0052] Specifically, the preset value can be set according to the length of the tobacco block and the number of segments. To achieve uniform cutting, the preset value can be the ratio of the length of the tobacco block to a positive integer. This positive integer can be set according to the actual situation. For example, if you want to cut the tobacco block into 5 segments evenly, then set the positive integer to 5; if you want to cut the tobacco block into 10 segments evenly, then set the positive integer to 10.

[0053] Optionally, the preset time can be 0.02 seconds. Taking a preset time of 0.02 seconds as an example, the above cutting step S3 can be designed in the software program as follows:

[0054] A) Set the conveyor belt speed as parameter v and the smoke block travel distance as parameter s;

[0055] B) Set parameter s to zero;

[0056] C) For each actual transmission speed parameter of the conveyor belt obtained, the value is assigned to parameter v, that is, parameter v = the currently obtained actual transmission speed; and using the relationship between parameter s and parameter v, s = 0.02v, the current travel distance of the smoke block is calculated, and the value of the travel distance is assigned to parameter s, that is, the calculation formula of parameter s in the program is designed as s = 0.02*v + s;

[0057] D) Determine if the value of parameter s is less than the preset value. If it is less than the preset value, return to step C); if the value of parameter s is greater than or equal to the preset value, control the interpolation mechanism to cut the smoke block and return to step B.

[0058] For example, the function creation step S1 specifically includes the following steps:

[0059] Step S11: Obtain the number of rotating magnetic field pole pairs of the motor, the radius of the conveyor roller, and the thickness of the conveyor belt.

[0060] Specifically, the number of rotating magnetic field pole pairs is usually indicated on the motor's nameplate, and the number of rotating magnetic field pole pairs can be obtained from the motor's nameplate; while the radius of the conveyor roller and the thickness of the conveyor belt can be actually measured using measuring tools (such as rulers).

[0061] Step S12: Construct the first relationship between motor frequency and motor speed based on the number of pole pairs of the rotating magnetic field.

[0062] Specifically, the first relation is:

[0063]

[0064] Where N represents the motor speed, measured in revolutions per minute; F represents the motor frequency, measured in Hertz; and P represents the number of rotating magnetic field pole pairs.

[0065] Optionally, some motors are equipped with a speed reducer, thus having a corresponding reduction ratio i, which affects the motor speed. Therefore, in some other embodiments of the present invention, the function establishment step S1 further includes:

[0066] After step S11 and before step S12, it is determined whether the motor is equipped with a speed reducer. If so, the corresponding speed reduction ratio is obtained.

[0067] At this point, the first relationship between the motor frequency and the motor speed in step S12 is established based on the number of pole pairs of the rotating magnetic field and the reduction ratio. The reduced motor speed (i.e., the first relationship) is as follows:

[0068]

[0069] Where N represents the motor speed, measured in revolutions per minute; F represents the motor frequency, measured in Hertz; i represents the reduction ratio; and P represents the number of pole pairs of the rotating magnetic field.

[0070] Step S13: Construct a functional relationship between the conveyor belt speed and the motor frequency based on the first relationship, the radius of the conveyor roller, and the thickness of the conveyor belt. Specifically, this functional relationship can be:

[0071]

[0072] Where v represents the conveyor belt speed in meters per second; R represents the radius of the conveyor roller in meters; H represents the thickness of the conveyor belt in meters; F represents the motor frequency in Hertz; i represents the reduction ratio; and P represents the number of pole pairs of the rotating magnetic field.

[0073] Since π, R, H, i, and P are fixed values, for the convenience of the following description, the formula is simplified as follows:

[0074] v=αF

[0075] in,

[0076] During operation, since the frequency F changes constantly, the cutting step S3 actually uses an integral approach, that is, it uses a subdivision method to calculate the travel distance of the smoke block. Taking an interval of 0.02 seconds as an example (specifically, the smaller the acquisition time, the higher the accuracy, so the acquisition time can be set according to the requirements):

[0077] Once the smoke block enters the interpolation region, a frequency is collected every 0.02 seconds, as shown in Table 1:

[0078] Time (in seconds) Frequency (unit: Hz) 0.02 F1 0.02 F2 0.02 F3 0.02 F4 0.02 F5 0.02 F6 0.02 F7 ┄ ┄ 0.02 Fm

[0079] Generally, the operating frequency of the motor varies between two adjacent frequencies. However, since we assume the acquisition time is sufficiently short, we can assume that the smoke block moves at a constant speed within a 0.02s time interval. That is, the motor frequency is assumed to be the same within this 0.02s time interval, and we take the value of the frequency acquired at the beginning of this time interval. For example, between F1 and F2, that is, within this 0.02s interval, assuming the motor frequency is F1, and the conveyor belt moves at a constant speed of αF1, using the speed-time formula, we can obtain the distance the smoke block travels every 0.02s as follows:

[0080] s=0.02αF

[0081] The corresponding distances can be obtained from this, as shown in Table 2:

[0082]

[0083]

[0084] Assuming the length of the smoke block is L, and it needs to be divided into n equal parts, the PLC will calculate and determine the travel distance S of the smoke block.

[0085] S = s1 + s2 + s3 + ... + sx

[0086] Suppose that when the sixth calculation is performed (i.e., x = 6), the calculated S satisfies... Then the interpolation machine starts interpolation, meaning that this interpolation is performed 0.12 seconds after the previous interpolation (i.e., 0.02 × 6 = 0.12).

[0087] The smoke block interleaving method provided in this embodiment of the invention can achieve uniform or near-uniform interleaving of smoke blocks, which facilitates the stability of subsequent processes.

[0088] Accordingly, the present invention also provides a computer storage medium storing instructions that, when executed by a computer, enable the computer to perform the above-described smoke block interleaving method.

[0089] Now for reference Figure 2 The diagram shows a block diagram of an electronic device 400 according to one embodiment of the present application. The electronic device 400 may include one or more processors 401 coupled to a controller hub 403. In at least one embodiment, the controller hub 403 communicates with the processor 401 via a multi-branch bus such as a Front Side Bus (FSB), a point-to-point interface such as a QuickPath Interconnect (QPI), or a similar connection. The processor 401 executes instructions controlling general types of data processing operations. In one embodiment, the controller hub 403 includes, but is not limited to, a Graphics & Memory Controller Hub (GMCH) (not shown) and an Input / Output Hub (IOH) (which may be on a separate chip) (not shown), wherein the GMCH includes memory and a graphics controller and is coupled to the IOH.

[0090] Electronic device 400 may also include a coprocessor 402 and a memory 404 coupled to a controller hub 403. Alternatively, one or both of the memory and GMCH may be integrated within the processor (as described in this application), with memory 404 and coprocessor 402 directly coupled to processor 401 and controller hub 403, which is located on a single chip with IOH.

[0091] Memory 404 may be, for example, Dynamic Random Access Memory (DRAM), Phase Change Memory (PCM), or a combination of both. Memory 404 may include one or more tangible, non-transitory computer-readable media for storing data and / or instructions. The computer-readable storage medium stores instructions, specifically, temporary and permanent copies of those instructions. The instructions may include, when executed by at least one of the processors, causing the electronic device 400 to perform, as... Figure 1 The instructions for the method are shown. When executed on a computer, the instructions cause the computer to perform the method disclosed in any or a combination of the above embodiments.

[0092] In one embodiment, the coprocessor 402 is a dedicated processor, such as, for example, a high-throughput MIC (Many Integrated Core) processor, a network or communication processor, a compression engine, a graphics processor, a GPGPU (General-purpose computing on graphics processing units), or an embedded processor, etc. Optional properties of the coprocessor 402 are indicated by dashed lines. Figure 2 middle.

[0093] In one embodiment, electronic device 400 may further include a network interface (NIC, Network Interface Controller) 406. Network interface 406 may include a transceiver for providing a radio interface for electronic device 400 to communicate with any other suitable device (such as a front-end module, antenna, etc.). In various embodiments, network interface 406 may be integrated with other components of electronic device 400. Network interface 406 can implement the functions of the communication unit in the above embodiments.

[0094] Electronic device 400 may further include input / output (I / O) devices 405. I / O 405 may include: a user interface designed to enable a user to interact with electronic device 400; a peripheral component interface designed to enable peripheral components to also interact with electronic device 400; and / or sensors designed to determine environmental conditions and / or location information related to electronic device 400.

[0095] It is worth noting that, Figure 2 This is merely an example. That is, although... Figure 2The electronic device 400 shown includes multiple devices such as a processor 401, a controller hub 403, and a memory 404. However, in practical applications, devices using the methods of this application may include only a portion of the devices in the electronic device 400. For example, it may include only the processor 401 and the network interface 406. Figure 2 The properties of the optional devices are shown by dashed lines.

[0096] Now for reference Figure 3 The diagram shown is a block diagram of a SoC (System on Chip) 500 according to an embodiment of this application. Figure 3 In the diagram, similar components share the same reference numerals. Additionally, dashed boxes are an optional feature for more advanced SoCs. Figure 3 In this SoC 500, the following components are included: an interconnect unit 550 coupled to the processor 510; a system proxy unit 580; a bus controller unit 590; an integrated memory controller unit 540; a group or one or more coprocessors 520, which may include integrated graphics logic, an image processor, an audio processor, and a video processor; a static random-access memory (SRAM) unit 530; and a direct memory access (DMA) unit 560. In one embodiment, the coprocessor 520 includes a dedicated processor, such as, for example, a network or communication processor, a compression engine, a GPGPU (General-purpose computing on graphics processing units), a high-throughput MIC processor, or an embedded processor.

[0097] Static Random Access Memory (SRAM) cell 530 may include one or more tangible, non-transitory computer-readable media for storing data and / or instructions. The computer-readable storage medium stores instructions, specifically, temporary and permanent copies of those instructions. These instructions may include: instructions that, when executed by at least one processor, cause the SoC to perform the method shown in Figure 1. When the instructions are executed on a computer, they cause the computer to perform the methods disclosed in the above embodiments.

[0098] All methods and implementations of this application can be implemented in the form of software, magnetic files, firmware, etc.

[0099] Program code can be applied to input instructions to perform the functions described herein and generate output information. The output information can be applied to one or more output devices in a known manner. For the purposes of this application, the processing system includes any system having a processor such as, for example, a digital signal processor (DSP), a microcontroller, an application-specific integrated circuit (ASIC), or a microprocessor.

[0100] The program code can be implemented using a high-level procedural language or an object-oriented programming language to communicate with the processing system. Assembly language or machine language can also be used when needed. In fact, the mechanisms described in this paper are not limited to any particular programming language. In either case, the language can be a compiled language or an interpreted language.

[0101] One or more aspects of at least one embodiment can be implemented by representational instructions stored on a computer-readable storage medium, the instructions representing various logics in a processor, which, when read by a machine, cause the machine to create logic for performing the techniques described herein. These representations, referred to as “IP (Intellectual Property) cores,” can be stored on a tangible computer-readable storage medium and provided to multiple customers or production facilities for loading into manufacturing machines that actually manufacture the logic or processor.

[0102] In some cases, an instruction translator can be used to translate instructions from a source instruction set to a target instruction set. For example, an instruction translator can transform (e.g., using static binary transformation, including dynamically compiled dynamic binary transformation), morph, emulate, or otherwise translate instructions into one or more other instructions that will be processed by the core. Instruction translators can be implemented in software, hardware, firmware, or a combination thereof. Instruction translators can be on the processor, off the processor, or partially on and partially off the processor.

[0103] While the present invention has been illustrated and described with reference to certain preferred embodiments, those skilled in the art should understand that the above description is a further detailed explanation of the invention in conjunction with specific embodiments, and should not be construed as limiting the specific implementation of the invention to these descriptions. Various changes in form and detail can be made by those skilled in the art, including several simple deductions or substitutions, without departing from the spirit and scope of the invention.

Claims

1. A method for cutting tobacco blocks, wherein the tobacco blocks are transported by a conveying mechanism to a cutting mechanism for cutting, the conveying mechanism comprising a conveying roller and a conveyor belt sleeved on the conveying roller, a motor connected to the shaft end of the conveying roller, the motor being capable of driving the conveying roller to rotate around its axis; characterized in that, The methods for separating smoke blocks include: Function establishment steps: Establish the functional relationship between motor frequency and conveyor belt speed; Speed ​​acquisition steps: The actual operating frequency of the motor at the current moment is acquired once at a preset time interval, and the actual operating frequency is substituted into the functional relationship to obtain the actual transmission speed of the conveyor belt at that moment; Cutting steps: Calculate the travel distance of the smoke block on the conveyor belt based on the actual transport speed of the conveyor belt at each moment, and cut the smoke block based on the travel distance; The function creation steps include: Obtain the number of rotating magnetic field pole pairs of the motor, the radius of the conveyor roller, and the thickness of the conveyor belt; A first relationship between the motor frequency and the motor speed is constructed based on the number of pole pairs of the rotating magnetic field. Based on the first relationship, the radius of the conveyor roller, and the thickness of the conveyor belt, construct the functional relationship between the conveyor belt speed and the motor frequency; The function creation steps also include: Determine whether the motor is equipped with a speed reducer; if so, obtain the corresponding speed reduction ratio. A first relationship between the motor frequency and the motor speed is constructed based on the number of pole pairs of the rotating magnetic field and the reduction ratio. The first relation is: ， Where N represents the motor speed, measured in revolutions per minute; F represents the motor frequency, measured in Hertz; i represents the reduction ratio; and P represents the number of pole pairs of the rotating magnetic field. The functional relationship between the conveyor belt speed and the motor frequency is: ， Where v represents the conveyor belt speed in meters per second; R represents the radius of the conveyor roller in meters; H represents the thickness of the conveyor belt in meters; F represents the motor frequency in Hertz; i represents the reduction ratio; and P represents the number of pole pairs of the rotating magnetic field. The cutting steps include: Sub-distance calculation steps: Each time the actual transmission speed of the conveyor belt is obtained, the actual transmission speed is multiplied by the preset time to obtain the travel sub-distance within that time period; Accumulation step: After obtaining each of the aforementioned sub-distances, the obtained sub-distances are accumulated and summed, and the accumulation result is judged; If the accumulated result is less than the preset value, then return to the accumulation step; If the accumulated result is greater than or equal to a preset value, the interpolation mechanism is controlled to cut the smoke block, the accumulated result is cleared to zero, and then the process returns to the accumulation step.

2. The method for separating smoke blocks as described in claim 1, characterized in that, The preset value is the ratio of the length of the smoke block to a positive integer.

3. The method for separating smoke blocks as described in claim 1, characterized in that, The preset time is 0.02 seconds.

4. A computer storage medium, characterized in that, The computer storage medium stores instructions that, when executed by the computer, cause the computer to perform the smoke block interleaving method as described in any one of claims 1 to 3.

Images