Tobacco feeder and method and device for preventing bridging thereof, storage medium

Abstract

The present disclosure relates to a tobacco feeder and a method and device for preventing the tobacco feeder from being lifted and a storage medium. The method for preventing the tobacco feeder from being lifted comprises: acquiring output signals of a first photocell and a second photocell of the tobacco feeder, wherein the first photocell and the second photocell are both steep angle photocells; comparing the output signals of the first photocell and the second photocell to determine whether the first photocell and the second photocell are faulty. The present disclosure can handle abnormal photocells in time and can avoid the tobacco feeder from being interrupted due to the failure of the included angle photocell or the anti-lifting photocell during production.

Description

Technical Field

[0001] This disclosure relates to the field of tobacco machinery, and in particular to a tobacco feeder and its anti-overhead method and device, and storage medium. Background Technology

[0002] The feeder is the main conveying equipment on the tobacco processing production line. It is generally used in conjunction with equipment such as the limiting tube and electronic belt scale to control the material flow rate, thereby reducing the fluctuation of the material flow rate.

[0003] In tobacco processing production lines, regulating feeders and silo feeders are frequently used to temporarily store tobacco shreds, buffer and stabilize the flow rate. Regulating feeders mainly consist of a steep-angle belt, a storage bin, and a frame. Silo feeders add a material spreading trolley and a material distribution trolley above the storage bin.

[0004] Before the feeder enters production, pre-laying is performed. The material is fed from the feed end at the rear of the storage bin. When the material height reaches the high feed level photocell, the horizontal belt of the storage bin moves forward. When the material height is lower than the low feed level photocell, the horizontal belt stops moving. The pre-laying is completed when the material moves to the position of the head photocell, and the system enters the production waiting state. During the pre-laying process, the angled feed photocell and the anti-overhead photocell do not participate in the control of the horizontal belt. The movement of the horizontal belt is controlled by the high feed level photocell and the low feed level photocell. Summary of the Invention

[0005] The inventors discovered through research that angle phototubes and anti-overhead phototubes are independent steep-angle phototubes. As long as either one is working properly, there will be no interruption of current. If one of the angle phototubes or the anti-overhead phototube malfunctions, it will not cause a interruption of current. In other words, it is not easy to detect the potential failure of one phototube. When the second phototube also malfunctions, it will inevitably cause a interruption of current.

[0006] In view of at least one of the above technical problems, this disclosure provides a tobacco feeder and its anti-overhead method and device, and storage medium, which can promptly handle abnormal photocells and avoid feeder interruption caused by failure of angle photocells or anti-overhead photocells during production.

[0007] According to one aspect of this disclosure, a method for preventing a tobacco feeder from being lifted off the ground is provided, comprising:

[0008] The output signals of the first phototube and the second phototube of the tobacco feeder are acquired, wherein both the first phototube and the second phototube are steep-angle phototubes with a feeding function.

[0009] By comparing the output signals of the first phototube and the second phototube, it can be determined whether the first phototube and the second phototube are faulty.

[0010] In some embodiments of this disclosure, the first phototube is an angled phototube, and the second phototube is an anti-overhead phototube.

[0011] In some embodiments of this disclosure, the step of comparing the output signals of the first phototube and the second phototube to determine whether the first phototube and the second phototube are faulty includes:

[0012] When the tobacco feeder is in production, the output signals of the first phototube and the second phototube are delayed. The output signals of the first phototube and the second phototube after the delay are compared to determine whether the first phototube and the second phototube have malfunctioned.

[0013] In some embodiments of this disclosure, when the tobacco feeder is in production, the feeder has material, the steep-angle belt is running, the horizontal belt gap is moving forward, the first phototube and the second phototube detect material most of the time, and intermittently detect no material.

[0014] In some embodiments of this disclosure, the step of delaying the output signals of the first phototube and the second phototube, comparing the output signals of the first phototube and the second phototube after the delay processing, and determining whether the first phototube and the second phototube are faulty includes:

[0015] The output signals of the first and second phototubes are processed by power-off delay to convert them into continuous material status signals of the first and second phototubes.

[0016] Compare whether the continuous material status signals of the first phototube and the second phototube are consistent;

[0017] If the material status signals of the first phototube and the second phototube are inconsistent, a delayed power-on process is performed. After the delayed power-on time is reached, it is determined that the first phototube or the second phototube is faulty, and a phototube abnormality alarm is issued.

[0018] In some embodiments of this disclosure, the step of performing power-off delay processing on the output signals of the first phototube and the second phototube to convert them into continuous material status signals for the first phototube and the second phototube includes:

[0019] When the output signal of the first phototube switches from the state with material to the state without material, the first phototube signal is maintained in the state with material for a first predetermined time. After the first predetermined time, the first phototube signal is switched to the state without material.

[0020] When the output signal of the second phototube switches from a material-containing state to a material-free state, the signal of the second phototube continues to be in the material-containing state for a first predetermined time. After the first predetermined time, the signal of the second phototube is switched to the material-free state.

[0021] In some embodiments of this disclosure, the step of delaying the output signals of the first phototube and the second phototube, comparing the output signals of the first phototube and the second phototube after the delay processing, and determining whether the first phototube and the second phototube are faulty includes:

[0022] When the output signal of the phototube indicates the presence of material, the output signal of the phototube is subjected to a power-on delay.

[0023] Determine whether the output signal of the phototube remains in the material presence state within the second predetermined time period;

[0024] If the output signal of the phototube remains in the state of having material within a second predetermined time, the phototube is determined to be abnormal, wherein the phototube is either the first phototube or the second phototube.

[0025] In some embodiments of this disclosure, the step of comparing the output signals of the first phototube and the second phototube to determine whether the first phototube and the second phototube are faulty includes:

[0026] If, when the tobacco feeder is stopped, one of the phototubes outputs a signal indicating the presence of material, while the other outputs a signal indicating the absence of material, then one of the phototubes is determined to be malfunctioning.

[0027] In some embodiments of this disclosure, when the tobacco feeder is in a stopped state, if the output signal of one of the first and second phototubes indicates the presence of material, and the output signal of the other phototube indicates the absence of material, then determining that one of the first and second phototubes is abnormal includes:

[0028] If the feeder stops, the steep-angle belt is not running, the photoelectric tube of the feed head does not detect material, and the horizontal belt is not running, and the detection status of the angle photoelectric tube is inconsistent with the detection status of the anti-overhead photoelectric tube, then it is determined that the first photoelectric tube or the second photoelectric tube is faulty. After a fourth predetermined time delay, a photoelectric tube abnormality alarm is issued.

[0029] In some embodiments of this disclosure, the step of comparing the output signals of the first phototube and the second phototube to determine whether the first phototube and the second phototube are faulty includes:

[0030] When the tobacco feeder is in a transition state, it is determined whether the duration of the first situation has reached the third predetermined time. The first situation is when the output signal of one of the phototubes, the first phototube and the second phototube, is in the state of having material and the output signal of the other phototube is in the state of having no material.

[0031] If the duration of the first situation reaches the third predetermined time, an abnormal alarm will be issued.

[0032] In some embodiments of this disclosure, the first predetermined time is 1 minute.

[0033] According to another aspect of this disclosure, a device for preventing a tobacco feeder from being lifted off the ground is provided, comprising:

[0034] The signal acquisition module is configured to acquire the output signals of the first phototube and the second phototube of the tobacco feeder, wherein both the first phototube and the second phototube are steep-angle phototubes with a feeding function.

[0035] The fault detection module is configured to compare the output signals of the first phototube and the second phototube to determine whether the first phototube and the second phototube are faulty.

[0036] According to another aspect of this disclosure, a device for preventing a tobacco feeder from being lifted off the ground is provided, comprising:

[0037] Memory, used to store instructions;

[0038] A processor is configured to execute the instructions, causing the tobacco feeder anti-overhead device to perform the method described in any of the above embodiments.

[0039] According to another aspect of this disclosure, a tobacco feeder is provided, including a tobacco feeder anti-overhead device as described in any of the above embodiments.

[0040] According to another aspect of this disclosure, a computer-readable storage medium is provided, wherein the computer-readable storage medium stores computer instructions that, when executed by a processor, implement the method as described in any of the above embodiments.

[0041] This disclosure can promptly handle abnormal photocells and prevent feeder interruptions caused by the failure of angled photocells or anti-overhead photocells during production. Attached Figure Description

[0042] To more clearly illustrate the technical solutions in the embodiments of this disclosure or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this disclosure. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0043] Figure 1 This is a schematic diagram of the structure of some embodiments of the tobacco feeder disclosed herein.

[0044] Figure 2A schematic diagram of the control timing of the photoelectric tube for the steep angle of the feeder and the photoelectric tube for the anti-overhead movement.

[0045] Figure 3 This is a schematic diagram of some embodiments of the method for preventing the tobacco feeder from being suspended in mid-air according to the present disclosure.

[0046] Figure 4 This is a schematic diagram of the abnormal alarm signal of the reset phototube in some embodiments of this disclosure.

[0047] Figure 5a This is a schematic diagram of the power-off delay processing of the angled phototube in some embodiments of this disclosure.

[0048] Figure 5b This is a schematic diagram of the anti-power-off delay processing for overhead phototubes in some embodiments of this disclosure.

[0049] Figure 6 This is a timing diagram illustrating the power-off delay processing in some embodiments of this disclosure.

[0050] Figure 7 This is a schematic diagram illustrating the abnormal alarm of the phototube during and after the feeding machine is in operation and shutdown states, as shown in some embodiments of this disclosure.

[0051] Figure 8a and Figure 8b This is a schematic diagram of power outage delay processing in some embodiments of this disclosure.

[0052] Figure 9a This is a timing diagram illustrating the power-off delay processing in some embodiments of this disclosure.

[0053] Figure 9b This is a schematic diagram of some embodiments of the method for preventing the tobacco feeder from being suspended in mid-air according to the present disclosure.

[0054] Figure 10 This is a schematic diagram of some embodiments of the anti-overhead device for the tobacco feeder disclosed herein.

[0055] Figure 11 This is a schematic diagram of the structure of some embodiments of the anti-overhead device for the tobacco feeder disclosed herein. Detailed Implementation

[0056] The technical solutions of the embodiments of this disclosure will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this disclosure, and not all embodiments. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit this disclosure or its application or use. All other embodiments obtained by those skilled in the art based on the embodiments of this disclosure without creative effort are within the scope of protection of this disclosure.

[0057] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps set forth in these embodiments do not limit the scope of this disclosure.

[0058] At the same time, it should be understood that, for ease of description, the dimensions of the various parts shown in the accompanying drawings are not drawn according to actual scale.

[0059] Techniques, methods, and equipment known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and equipment should be considered part of the specification.

[0060] In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values.

[0061] It should be noted that similar labels and letters in the following figures indicate similar items; therefore, once an item is defined in one figure, it does not need to be discussed further in subsequent figures.

[0062] Figure 1 This is a schematic diagram of the structure of some embodiments of the tobacco feeder disclosed herein. Figure 1 The tobacco feeder in this embodiment is an adjustable feeder. For example... Figure 1 As shown, the tobacco feeder disclosed herein mainly consists of a steep-angle belt, a storage bin, and a frame. The storage bin type feeder adds a material distribution trolley and a material spreading trolley above the storage bin.

[0063] Figure 1 The tobacco feeder of the embodiment may include a feeder storage box horizontal belt 1, a steep angle belt 2, a feeding roller 3, a feed angle photoelectric tube 4, a feed head photoelectric tube 5, a feed end 6, an anti-overhead diffuse reflection photoelectric tube 7, a feed low level photoelectric tube 8, a feed high level photoelectric tube 9, and a discharge hopper 10.

[0064] Before the feeder enters production, pre-laying is performed. The material is fed from the feed end 6 at the rear of the storage box. When the material height reaches the feed high level photoelectric tube 9, the horizontal belt 1 of the storage box moves forward. When the material height is lower than the feed low level photoelectric tube 8, the horizontal belt 1 stops moving. The material moves to the position of the head photoelectric tube 5, the pre-laying is completed, and the machine enters the production waiting state. During the pre-laying process, the angled material photoelectric tube 4 and the anti-overhead photoelectric tube 7 do not participate in the control of the horizontal belt 1. The movement of the horizontal belt is controlled by the feed low level photoelectric tube 8 and the feed high level photoelectric tube 9.

[0065] Figure 2This diagram illustrates the control timing of the angle photocell and anti-overhead photocell on the steep-angle belt of the feeder. When production conditions are met, the feeder enters production mode. The steep-angle belt 2 starts running. After a 1-second delay (T1) when the angle photocell 4 detects no material, the horizontal belt 1 moves forward, delivering material to the angle photocell position. The angle photocell detects material and stops moving the horizontal belt after a 2-second delay (T2). The steep-angle belt lifts the material to the discharge hopper 10, and the feeding roller pushes excess material down from the steep-angle belt to ensure uniform material distribution. After the feeder enters production mode, the horizontal belt movement is controlled by the angle photocell, not by the high-position or low-position feeding photocell. The horizontal belt moves forward when the angle photocell detects no material, and stops moving when it detects material.

[0066] Because materials often linger at the front end of the horizontal conveyor belt during production, the angle phototube detects material while the steep-angle conveyor belt is empty, causing a break in the material supply and disrupting continuous production. This affects both production efficiency and product quality. Misalignment of the angle phototubes or dirt on the relatively positioned acrylic glass can also cause flow interruptions. To prevent this, an anti-overhead phototube 7 is added. The anti-overhead phototube detects no material on the steep-angle conveyor belt for 1 second (T1), and the horizontal conveyor belt continues running. Once the anti-overhead phototube detects material, the horizontal conveyor belt stops. If the anti-overhead phototube fails to detect material for an extended period, the horizontal conveyor belt will run for 7 seconds (T3) before stopping. The maximum running time for the horizontal conveyor belt without material detection by the anti-overhead phototube is 7 seconds (T3). This is primarily to prevent malfunctions where the anti-overhead phototube is present but not detected. If the horizontal conveyor belt runs continuously for 7 seconds with material present, it can easily cause material blockage between the steep-angle conveyor belt and the feeding roller.

[0067] In some embodiments of this disclosure, such as Figure 2 As shown, T1 is 1 second, T2 is 2 seconds, T3 is 7 seconds, and T4 is less than 1 second.

[0068] The inventors discovered through research that adding an anti-overhead photocell to the feeder significantly reduced the probability of the feeder becoming overhead, making it difficult for it to become overhead under normal circumstances. However, it could not completely eliminate the possibility of the feeder becoming overhead.

[0069] The angle photocell and the anti-overhead photocell are independent steep-angle belt feeding photocells. As long as either one is working properly, there will be no flow interruption. If one of the angle photocells or the anti-overhead photocell malfunctions, it will not cause a flow interruption, meaning it is not easy to detect a potential photocell failure. However, when the second photocell also malfunctions, a flow interruption will inevitably occur. For example, if the anti-overhead photocell malfunctions, the feeder is essentially back to a state without the anti-overhead photocell installed, which will inevitably lead to a flow interruption. If the angle photocell is not aligned, it will continuously detect material. As long as the anti-overhead photocell is working, if there is a section of empty material on the feeder's horizontal belt, and the anti-overhead photocell detects no material, and after the horizontal belt runs for 7 seconds, the anti-overhead photocell still does not detect material, then a flow interruption will occur, and production will be interrupted.

[0070] In view of at least one of the above technical problems, this disclosure provides a tobacco feeder and its anti-overhead method and device, and storage medium. The disclosure will be described below through specific embodiments.

[0071] Figure 3 This diagram illustrates some embodiments of the tobacco feeder anti-overhead method disclosed herein. Preferably, this embodiment may utilize the tobacco feeder anti-overhead device of this disclosure or the tobacco feeder of this disclosure (e.g., Figure 1 The tobacco feeder in the embodiment is used for execution. Figure 3 The method of the embodiment may include at least one of steps 100 to 200, wherein:

[0072] Step 100: Obtain the output signals of the first phototube and the second phototube of the tobacco feeder, wherein the first phototube and the second phototube are both steep-angle phototubes with material feeding.

[0073] In some embodiments of this disclosure, the first phototube is an angled phototube, and the second phototube is an anti-overhead phototube.

[0074] In some embodiments of this disclosure, such as Figure 1 As shown, the first phototube is an angled through-beam phototube 4, and the second phototube is an anti-overhead diffuse reflection phototube 7.

[0075] In some embodiments of this disclosure, the feeder exists in four states: production state, shutdown state, transition state, and intermediate shutdown state, wherein:

[0076] (1) Production status: The feeder has material, the steep-angle belt is running, and the horizontal belt gap moves forward. By adjusting the position and angle of the angle phototube and the anti-overhead phototube, the angle phototube and the anti-overhead phototube can detect material most of the time and detect no material intermittently.

[0077] (2) The stop state is the steep angle belt and the horizontal belt stop state. There is no material in the feeder, the material head photoelectric tube 5 detects no material, and the included angle photoelectric tube and the anti-overhead photoelectric tube detect no material.

[0078] (3) The transition state is the transition from the shutdown state to the production state, or the transition from the production state to the shutdown state. The angle phototube and the anti-overhead phototube are difficult to predict the material detection state, so the alarm is shielded by delay.

[0079] (4) Mid-process stoppage occurs when production suddenly stops, leaving material in steep-angle or horizontal zones. The detection status of the material by the angle phototube and the anti-overhead phototube is difficult to predict. If the material head phototube 5 detects material, it indicates a mid-process stoppage. The material head phototube 5 is used to shield the phototube abnormal alarm for mid-process stoppage.

[0080] Step 200: Compare the output signals of the first phototube and the second phototube to determine whether the first phototube and the second phototube are faulty.

[0081] In some embodiments of this disclosure, for four states, step 200 may include at least one of steps 210 to 240, wherein:

[0082] Step 210: When the tobacco feeder is in production, the output signals of the first phototube and the second phototube are delayed, and the output signals of the first phototube and the second phototube after the delay are compared to determine whether the first phototube and the second phototube are faulty.

[0083] In some embodiments of this disclosure, when the tobacco feeder is in production, the feeder has material, the steep-angle belt is running, the horizontal belt gap is moving forward, the first phototube and the second phototube detect material most of the time, and intermittently detect no material.

[0084] In some embodiments of this disclosure, step 210 may include at least one of steps 211 to 213, wherein:

[0085] Step 211: The output signals of the first phototube and the second phototube are subjected to power-off delay processing and converted into continuous material status signals of the first phototube and the second phototube.

[0086] In some embodiments of this disclosure, step 211 may include: when the output signal of the first phototube switches from a material-containing state to a material-free state, maintaining the first phototube signal in a material-containing state for a first predetermined time T0, and after the first predetermined time T0, switching the first phototube signal to a material-free state; when the output signal of the second phototube switches from a material-containing state to a material-free state, maintaining the second phototube signal in a material-containing state for a first predetermined time T0, and after the first predetermined time T0, switching the second phototube signal to a material-free state.

[0087] In some embodiments of this disclosure, the first predetermined time is 1 minute.

[0088] In some embodiments of this disclosure, step 210 can be implemented by programming in a language such as Siemens S7.

[0089] Figure 4 This is a schematic diagram illustrating the abnormal alarm signal of the reset phototube in some embodiments of this disclosure. For example... Figure 4 As shown, step 210 may include: resetting the phototube abnormal alarm signal, the BOOL (Boolean type) state of M12.0 is always "0", and the program starts resetting the BOOL state of the phototube abnormal alarm DB139.DBX183.2 to 0. Figure 4 The reset of the phototube abnormal alarm can include: program loop scanning, first reset phototube abnormal alarm, M12.0 is of type BOOL and is always in the "0" state. In the ladder diagram, it is a normally closed point, indicating that the subsequent instruction R is powered on and executes the instruction to set the phototube abnormal alarm DB139.DBX 183.2(BOOL) to the "0" state.

[0090] Figure 5a This is a schematic diagram of the power-off delay processing of the angled phototube in some embodiments of this disclosure. Figure 5aThe delay-off processing of the angle photoelectric signal tube can include: when the inverter running signal DB66.DBX.0 (BOOL) is "1", the normally open contact in the ladder diagram is closed, the inverter running frequency is compared, the inverter running frequency is DB66.DBD362 (real number type), the CMP<>R instruction compares the real numbers input IN1 and IN2, which are not relative, in the program it means the inverter frequency is not equal to 0.0, I108.5 is the angle photoelectric tube input signal, "0" state indicates that the photoelectric tube detects material, the normally closed contact is open, the power-off delay T275 input terminal S is "1", the output BOOL state is "1"; I108.5 is the angle photoelectric tube input signal, "1" state indicates that the photoelectric tube detects no material, the normally closed contact is closed, the power-off delay T275 input terminal S is "0", the output BOOL state is "1", after 1 minute the T275 output BOOL state is "0". When the inverter's operating signal DB66.DBX.0(BOOL) is "0", the power-off delay T275 input R is "1", T275 is reset, and the output BOOL is "0".

[0091] Figure 5b This is a schematic diagram of the anti-power-off delay processing for overhead phototubes in some embodiments of this disclosure. Figure 5b A schematic diagram of the signal delay interruption handling for overhead phototubes is given. Figure 6 This is a timing diagram illustrating the power-off delay processing in some embodiments of this disclosure. For example... Figure 5a , Figure 5b and Figure 6 As shown, step 211 may include: the angled phototube detects material most of the time, but intermittently detects no material, and then processes this by using a 1-minute power-off delay, such as... Figure 5a As shown; the anti-overhead phototube detects material most of the time, but intermittently detects no material, and handles this by using a 1-minute power-off delay. Figure 5b As shown. Figure 5a and Figure 5b As shown, the BOOL state of DB66.DBX392.0 indicates steep-angle belt operation, I108.5 is the input signal for the angle phototube, DB66.DBD362 is the operating frequency of the steep-angle belt motor inverter, I16.0 is the input signal for the anti-overhead phototube, S-OFFDT is the power-off delay timer, and CMP<>R is the frequency comparator. The timing diagrams for power-off delay timers T275 and T277 are as follows. Figure 6 As shown, when the phototube detects material, the BOOL state of T275 or T277 is 1. When the phototube detects no material, the BOOL state returns to 0 after 1 minute (T0).

[0092] Step 212: Compare whether the continuous material presence status signals of the first phototube and the second phototube are consistent; if the continuous material presence status signals of the first phototube and the second phototube are inconsistent, then after a third predetermined power-on delay, issue a phototube abnormality alarm.

[0093] In some embodiments of this disclosure, step 212 may include: comparing whether the continuous material presence status signals of the first phototube and the second phototube are consistent; if the continuous material presence status signals of the first phototube and the second phototube are inconsistent, by power-on delay processing, the power-on delay reaches a third predetermined time, determining that the first phototube or the second phototube is faulty, and issuing a phototube abnormality alarm.

[0094] If the material status signals from the first and second phototubes are inconsistent, an alarm may be triggered if the signals are compared, potentially leading to false alarms. Since the generation process can encounter extreme situations, this disclosure incorporates a third predetermined time for processing or filtering, improving alarm accuracy and mitigating false alarms in extreme cases.

[0095] In some embodiments of this disclosure, the third predetermined time is 3 minutes.

[0096] Figure 7 This is a schematic diagram illustrating the abnormal alarm of the phototube during and after the feeding machine is in operation and shutdown states, as shown in some embodiments of this disclosure. Figure 7 This is used to ensure that the phototube states are consistent during production or transition periods. Figure 7 The upper part of Network 19 is used to implement alarms for production status or transition status; Figure 7 The lower part, Network 20, is used to implement alarms for shutdown or fault status.

[0097] In some embodiments of this disclosure, step 212 may include: Figure 7 As shown in the upper part, during the production of the feeder, T275 indicates that the phototube at the included angle has detected material, and T277 indicates that the anti-overhead phototube has detected material. If their states are inconsistent, the power-on delay timer T286 will delay for 3 minutes and then set the BOOL state of DB139.DBX183.2 to 1, triggering an alarm for abnormal phototube operation. Figure 7 In this context, S-OFFDT stands for Power-On Delay Unit.

[0098] In some embodiments of this disclosure, steps 211 to 212 may include: During the feeder's production state, the angle phototube and the anti-overhead phototube detect material most of the time, with intermittent detections of no material. A 1-minute power-off delay is used for processing, resulting in a continuous material signal from both the angle phototube and the anti-overhead phototube during production. By comparing the delayed signals, both the angle phototube and the anti-overhead phototube signals consistently indicate material. If the angle phototube signal indicates material but the anti-overhead phototube signal does not, a phototube anomaly is detected. Similarly, if the anti-overhead phototube signal indicates material but the angle phototube signal does not, a phototube anomaly is detected. The signal comparison is processed with a 3-minute power-on delay, shielding against false alarms triggered by extreme conditions and improving comparison accuracy.

[0099] In some embodiments of this disclosure, the intermittent detection time of the angle phototube and the anti-overhead phototube without material is less than 15 seconds, and the power-off delay processing is greater than 15 seconds to obtain a continuous state with material. In order to improve the reliability of mutual state detection, 1 minute is preferred.

[0100] The angled phototube and the anti-overhead phototube of this disclosure detect materials most of the time, but without power-off delay processing to form a continuous state of material presence, they cannot perform mutual state detection or such mutual state detection is simply unreliable.

[0101] In other embodiments of this disclosure, step 210 may further include at least one of steps 214 to 216, wherein:

[0102] Step 214: When the output signal of the phototube indicates the presence of material, the output signal of the phototube is subjected to a power-on delay process, wherein the phototube is a first phototube or a second phototube.

[0103] Step 215: Determine whether the output signal of the phototube remains in the state of having material within the second predetermined time period.

[0104] Step 216: If the output signal of the phototube continues to show a material presence for a second predetermined time, the phototube is determined to be malfunctioning.

[0105] In some embodiments of this disclosure, steps 214 to 216 may include: In the production state, the angled phototube and the anti-overhead phototube detect material most of the time, with intermittent detection of no material. If a phototube continuously detects material for an extended period, an anomaly is also identified. If the angled phototube and the anti-overhead phototube detect material, a 4-minute power-on delay is applied. If material is detected for 4 minutes, the phototube is determined to be abnormal. The power-on delay can generally be greater than 15 seconds, but 4 minutes is preferred to improve reliability.

[0106] In some embodiments of this disclosure, the second predetermined time is 4 minutes.

[0107] Figure 8a and Figure 8b This is a schematic diagram of power outage delay processing in some embodiments of this disclosure. Figure 8a The diagram illustrates the timeout alarm for the angle phototube detection. Specifically, it can include: alarming separately for abnormalities of the angle phototube during production. For example, the angle phototube is a through phototube. If the transmitting phototube and the receiving phototube are not aligned, it will cause the angle phototube to falsely detect the presence of material. Under normal circumstances, the angle phototube will detect no material within 15 seconds. Therefore, if it detects material for a long time, the phototube is also abnormal. Figure 8b A schematic diagram of the anti-overhead phototube detection timeout alarm is given. Figure 9a This is a timing diagram illustrating the power-off delay processing in some embodiments of this disclosure.

[0108] In some embodiments of this disclosure, steps 214 to 216 may include: detecting material with an angled phototube, and performing a 4-minute power-on delay, such as... Figure 8a As shown; if the overhead phototube detects material, it will be processed with a 4-minute power-on delay. Figure 8b As shown; the phototube continuously detects material for more than 4 minutes, the BOOL state of the power-on delay timer (S_ODT) T276 and T278 is 1, and the BOOL state of DB139.DBX183.2 is set to 1; the timing of the power-on delay timer T276 and T278 is as follows. Figure 9a As shown, when the phototube continuously detects material for more than 4 minutes, the BOOL status of T276 and T278 is 1.

[0109] Step 220: When the tobacco feeder is in a stopped state, if the output signal of one of the first phototubes and the second phototube is a material presence state and the output signal of the other phototube is a material absence state, then it is determined that one of the first phototubes and the second phototube is abnormal.

[0110] In some embodiments of this disclosure, step 220 may include: the feeder is stopped, there is no material in the feeder, the steep-angle belt is not running, and the material head photocell continuously detects no material. If one of the angle photocell and the anti-overhead photocell detects material and the other detects no material, one photocell is definitely abnormal.

[0111] In some embodiments of this disclosure, step 220 may include: if the shutdown status signals of the first phototube and the second phototube are inconsistent, determining that the first phototube or the second phototube is faulty, and issuing a phototube abnormality alarm.

[0112] In some embodiments of this disclosure, step 220 may include: if the detection status of the angle phototube is inconsistent with the detection status of the anti-overhead phototube when the feeder is stopped, the steep-angle belt is not running, the phototube does not detect material, and the horizontal belt is not running, then it is determined that the first phototube or the second phototube is faulty, and after a power-on delay of a fourth predetermined time, a phototube abnormality alarm is issued.

[0113] In some embodiments of this disclosure, the fourth predetermined time is 4 minutes.

[0114] Figure 7 This is a schematic diagram illustrating the abnormal alarm of the phototube during and after the feeding machine is in operation and shutdown states, as shown in some embodiments of this disclosure. Figure 7 The lower part, Network 20, is used to implement alarms for shutdown or fault states. For example... Figure 7 As shown in the lower part, step 213 may include: the Network 20 feeder stops, and in the state where the steep-angle belt DB66.DBX392.0 is not running, the photoelectric tube I108.4 of the material head does not detect material, and the horizontal belt M1007.5 is not running, the detection status of the angle photoelectric tube (I108.5) is inconsistent with the detection status of the anti-overhead photoelectric tube (I16.0), the power-on delay timer T279 delays for 4 minutes, the BOOL status of DB139.DBX183.2 is set to 1, and the photoelectric tube alarm is abnormal.

[0115] Step 230: When the tobacco feeder is in a transition state, determine whether the duration of the first situation has reached a third predetermined time. The first situation is when the output signal of one of the phototubes of the first phototube and the second phototube is in the state of having material and the output signal of the other phototube is in the state of having no material. If the duration of the first situation reaches the third predetermined time, issue an abnormal alarm.

[0116] The third preset time disclosed in this invention mainly shields false alarms caused by the uncertain state of the phototube during the transition state, thereby improving the accuracy of the alarm.

[0117] In some embodiments of this disclosure, the third predetermined time is 3 minutes.

[0118] In some embodiments of this disclosure, step 230 may include: a feeder transition state, the duration of which is generally within 2 minutes. The angle phototube and the anti-overhead phototube are difficult to predict the material detection state. An alarm shield is provided for the situation where one phototube detects material and the other does not detect material, and a 3-minute power-on delay is used for processing. If this situation continues for 3 minutes, an alarm is issued.

[0119] In some embodiments of this disclosure, such as Figure 7As shown in Network 19 in the upper part, step 230 may include: when the feeder is in a transition state, mainly to prevent false alarms, in Figure 7 The T286 power-on delay unit of network 19 is used for filtering and exclusion.

[0120] Step 240: When the feeder stops midway, the material detection status of the angle phototube and the anti-overhead phototube is difficult to predict. If the stop time exceeds 4 minutes, an alarm may be generated or no alarm may be generated. In this stop state, the phototube abnormal alarm is a false alarm. The detection head is used to detect whether there is material blocking the phototube.

[0121] This disclosure provides a method for mutual detection of the status of dual phototubes in the steep angle feeding section of a tobacco feeder. By comparing the output signal status of the phototubes at the included angle and the diffuse reflection anti-overhead phototube, abnormalities in the phototubes can be detected and dealt with in a timely manner. This avoids feeder interruptions caused by the failure of the included angle phototube or the anti-overhead phototube during production, which would affect product quality and ensure production continuity.

[0122] Figure 9b This diagram illustrates some embodiments of the tobacco feeder anti-overhead method disclosed herein. Preferably, this embodiment may utilize the tobacco feeder anti-overhead device of this disclosure or the tobacco feeder of this disclosure (e.g., Figure 1 The tobacco feeder in the embodiment is used for execution. Figure 9b The method of the embodiment may include at least one of steps 91 to 97, which are performed cyclically, wherein:

[0123] Step 71: Reset the phototube abnormal alarm.

[0124] In some embodiments of this disclosure, step 71 may include: Figure 4 The implementation of the reset phototube abnormal alarm signal in the embodiment.

[0125] Step 72, signal delay interruption processing of the angled phototube.

[0126] In some embodiments of this disclosure, step 72 may include: Figure 5a Example and step 211: Power-off delay processing of the angled phototube.

[0127] Step 73, handling the signal delay interruption of the overhead phototube.

[0128] In some embodiments of this disclosure, step 73 may include: Figure 5b Example and step 211: Delay processing for preventing power failure of overhead phototubes.

[0129] Step 74: Determine if the phototube status is consistent during production or transition. If the phototube status is inconsistent during production or transition, an alarm for phototube malfunction will be triggered.

[0130] In some embodiments of this disclosure, step 74 may include: Figure 7 The Network 19 in the upper part of the embodiment is used to implement alarms for production status or transition status. If the phototube status signal is inconsistent in the production status or transition status of the feeder before feeding, the phototube will alarm abnormally.

[0131] In some embodiments of this disclosure, step 74 may include: when the status signals of the phototubes are inconsistent during the production of the feeder before feeding in steps 211 and 212, an abnormal alarm is triggered by the phototubes.

[0132] In some embodiments of this disclosure, step 74 may include: when the feeder in step 230 is in a transitional state and the phototube status signal is inconsistent, the phototube alarm is triggered.

[0133] Step 75: Determine if the phototube status is consistent in the stopped state. If the phototube status is inconsistent in the stopped state, a phototube malfunction alarm will be triggered.

[0134] In some embodiments of this disclosure, step 75 may include: Figure 7 In the second half of the embodiment, in Network 20 or step 220, when the feeder is in a stopped state and the phototube status signal is inconsistent, the phototube will alarm abnormally.

[0135] Step 76, angle phototube detection timeout. If the angle phototube detection times out, an alarm will sound for phototube malfunction.

[0136] In some embodiments of this disclosure, step 76 may include: Figure 8a Example 214 to 216: Angle phototube detection timeout alarm.

[0137] Step 77: Overhead phototube detection timeout. If the overhead phototube detection times out, an alarm will sound for an abnormal phototube. After step 77, the program will cycle through the scan and execute step 71.

[0138] In some embodiments of this disclosure, step 77 may include: Figure 8b Example 214 to 216: Anti-overhead phototube detection timeout alarm.

[0139] Figure 10 These are schematic diagrams of some embodiments of the anti-overhead device for the tobacco feeder disclosed herein. Figure 10As shown, the tobacco feeder anti-overhead device of this disclosure may include a signal acquisition module 101 and a fault detection module 102, wherein:

[0140] The signal acquisition module 101 is configured to acquire the output signals of the first phototube and the second phototube of the tobacco feeder, wherein the first phototube and the second phototube are both steep-angle feed phototubes.

[0141] In some embodiments of this disclosure, the first phototube is an angled phototube, and the second phototube is an anti-overhead phototube.

[0142] The fault detection module 102 is configured to compare the output signals of the first phototube and the second phototube to determine whether the first phototube and the second phototube are faulty.

[0143] In some embodiments of this disclosure, the fault detection module 102 can be configured to delay the output signals of the first phototube and the second phototube when the tobacco feeder is in production, and compare the output signals of the first phototube and the second phototube after the delay processing to determine whether the first phototube and the second phototube have malfunctioned.

[0144] In some embodiments of this disclosure, when the tobacco feeder is in production, the feeder has material, the steep-angle belt is running, the horizontal belt gap is moving forward, the first phototube and the second phototube detect material most of the time, and intermittently detect no material.

[0145] In some embodiments of this disclosure, the fault detection module 102 can be configured to, when performing delay processing on the output signals of the first phototube and the second phototube, comparing the output signals of the first phototube and the second phototube after delay processing, and determining whether the first phototube and the second phototube are faulty, perform power-off delay processing on the output signals of the first phototube and the second phototube, converting them into continuous material presence status signals of the first phototube and the second phototube; compare whether the continuous material presence status signals of the first phototube and the second phototube are consistent; if the continuous material presence status signals of the first phototube and the second phototube are inconsistent, determine that the first phototube or the second phototube is faulty, and issue a phototube abnormality alarm.

[0146] In some embodiments of this disclosure, when the output signals of the first phototube and the second phototube are processed by power-off delay to be converted into continuous material presence signals of the first phototube and the second phototube, the fault detection module 102 can be configured to, when the output signal of the first phototube switches from a material presence state to a material absence state, continue to maintain the first phototube signal as a material presence state for a first predetermined time, and after the first predetermined time, switch the first phototube signal to a material absence state; when the output signal of the second phototube switches from a material presence state to a material absence state, continue to maintain the second phototube signal as a material presence state for a first predetermined time, and after the first predetermined time, switch the second phototube signal to a material absence state.

[0147] In some embodiments of this disclosure, the first predetermined time is 1 minute.

[0148] In some embodiments of this disclosure, when the output signals of the first phototube and the second phototube are delayed, and the output signals of the first phototube and the second phototube after the delay are compared to determine whether the first phototube and the second phototube are faulty, the fault detection module 102 can be configured to perform power-on delay processing on the output signal of the phototube when the output signal of the phototube is in a material presence state; determine whether the output signal of the phototube is continuously in a material presence state within a first predetermined time; and determine that the phototube is abnormal when the output signal of the phototube is continuously in a material presence state within the first predetermined time, wherein the phototube is the first phototube or the second phototube.

[0149] In some embodiments of this disclosure, the fault detection module 102 can be configured to determine that one of the phototubes is abnormal when the tobacco feeder is in a stopped state, if the output signal of one of the phototubes is in a material presence state and the output signal of the other phototube is in a material absence state.

[0150] In some embodiments of this disclosure, the fault detection module 102 can be configured to determine whether the duration of the first situation has reached a first predetermined time when the tobacco feeder is in a transition state, wherein the first situation is a situation where the output signal of one of the first phototubes and the second phototube is in a material presence state and the output signal of the other phototube is in a material absence state; if the duration of the first situation reaches the first predetermined time, an abnormal alarm is issued.

[0151] Figure 11 This is a schematic diagram of the structure of some embodiments of the anti-overhead device for the tobacco feeder disclosed herein. For example... Figure 11 As shown, the anti-overhead device for the tobacco feeder includes a memory 111 and a processor 112.

[0152] Memory 111 is used to store instructions, and processor 112 is coupled to memory 111. Processor 112 is configured to execute instructions stored in memory to implement the above embodiments (e.g., Figures 3 to 9b The method involved in any embodiment.

[0153] like Figure 11 As shown, the tobacco feeder anti-overhead device also includes a communication interface 113 for information exchange with other devices. Additionally, the tobacco feeder anti-overhead device includes a bus 114, through which the processor 112, communication interface 113, and memory 111 communicate with each other.

[0154] The memory 111 may include high-speed RAM, and may also include non-volatile memory, such as at least one disk storage device. The memory 111 may also be a memory array. The memory 111 may also be divided into blocks, and the blocks may be combined into virtual volumes according to certain rules.

[0155] Furthermore, processor 112 may be a central processing unit (CPU), an application-specific integrated circuit (ASIC), or one or more integrated circuits configured to implement embodiments of the present disclosure.

[0156] The above-described embodiments of this disclosure can add mutual detection of the steep-angle material feeding dual phototube detection status to all feeders. An alarm is triggered for abnormal phototubes. After 4 minutes of abnormality in the angle phototube and the anti-overhead phototube, an alarm is generated for phototube abnormality. Maintenance personnel can handle the situation in a timely manner to ensure that the system's steep-angle material feeding dual phototubes are in normal condition. This avoids feeder interruptions during production, which would affect product quality and ensure production continuity.

[0157] According to another aspect of this disclosure, a tobacco feeder (e.g.) is provided. Figure 1 The tobacco feeder of the embodiments may include any of the embodiments described above (e.g., Figure 10 or Figure 11 The anti-overhead device for the tobacco feeder described in the embodiment)

[0158] According to another aspect of this disclosure, a computer-readable storage medium is provided, wherein the computer-readable storage medium stores computer instructions that, when executed by a processor, implement any of the embodiments described above (e.g., Figures 3 to 9b The method described in any embodiment.

[0159] In some embodiments of this disclosure, the computer-readable storage medium may be a non-transitory computer-readable storage medium.

[0160] In this disclosure, the phototube of the feeder detects intermittent material presence during production. After a power-off delay, it transitions to a continuous material presence state, and a comparison is made to determine if the states are consistent. If they are inconsistent, a phototube malfunction alarm is triggered. In this disclosure, if the phototube detects material presence for an excessively long period during production, a phototube malfunction alarm is triggered. In this disclosure, a delay is used to shield the alarm during the feeder's transitional state, preventing false alarms.

[0161] Those skilled in the art will understand that embodiments of this disclosure can be provided as methods, apparatus, or computer program products. Therefore, this disclosure can take the form of a completely hardware embodiment, a completely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, this disclosure can take the form of a computer program product embodied on one or more computer-usable non-transitory storage media (including, but not limited to, disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.

[0162] This disclosure is described with reference to flowchart illustrations and / or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of this disclosure. It will be understood that each block of the flowchart illustrations and / or block diagrams, and combinations of blocks in the flowchart illustrations and / or block diagrams, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, special-purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create a machine for implementing the flowchart illustrations. Figure 1 One or more processes and / or boxes Figure 1 A device that provides the functions specified in one or more boxes.

[0163] These computer program instructions may also be stored in a computer-readable storage medium that can direct a computer or other programmable data processing device to function in a particular manner, such that the instructions stored in the computer-readable storage medium produce an article of manufacture including instruction means, which are implemented in a process Figure 1 One or more processes and / or boxes Figure 1 The function specified in one or more boxes.

[0164] These computer program instructions may also be loaded onto a computer or other programmable data processing equipment to cause a series of operational steps to be performed on the computer or other programmable equipment to produce a computer-implemented process, thereby providing instructions that execute on the computer or other programmable equipment for implementing the process. Figure 1 One or more processes and / or boxes Figure 1 The steps of the function specified in one or more boxes.

[0165] The tobacco feeder anti-overhead device, signal acquisition module, and fault detection module described above can be implemented as a general-purpose processor, programmable logic controller (PLC), digital signal processor (DSP), application-specific integrated circuit (ASIC), field-programmable gate array (FPGA), or other programmable logic device, discrete gate or transistor logic device, discrete hardware component, or any suitable combination thereof for performing the functions described in this application.

[0166] This concludes the detailed description of the present disclosure. To avoid obscuring the concept of the disclosure, some details known in the art have not been described. Those skilled in the art will fully understand how to implement the technical solutions disclosed herein based on the above description.

[0167] Those skilled in the art will understand that all or part of the steps of the above embodiments can be implemented by hardware, or by a program instructing the relevant hardware to implement them. The program can be stored in a non-transitory computer-readable storage medium, such as a read-only memory, a disk, or an optical disk.

[0168] The description in this disclosure is provided for illustrative and descriptive purposes only and is not intended to be exhaustive or to limit the disclosure to its forms. Many modifications and variations will be apparent to those skilled in the art. The embodiments were chosen and described in order to better illustrate the principles and practical application of this disclosure and to enable those skilled in the art to understand this disclosure and to design various embodiments with various modifications suitable for a particular purpose.

Claims

1. A method for preventing tobacco feeder from being lifted, comprising: obtaining output signals of first and second photocells of a tobacco feeder, wherein the first and second photocells are both steep angle with material photocells; comparing the output signals of the first and second photocells to determine whether the first and second photocells are faulty; wherein the comparing the output signals of the first and second photocells to determine whether the first and second photocells are faulty comprises: in a case that the tobacco feeder is in a production state, performing delay processing on the output signals of the first and second photocells, comparing the output signals of the first and second photocells after the delay processing to determine whether the first and second photocells are faulty; wherein the performing delay processing on the output signals of the first and second photocells, comparing the output signals of the first and second photocells after the delay processing to determine whether the first and second photocells are faulty comprises: performing power-off delay processing on the output signals of the first and second photocells to convert the output signals of the first and second photocells into continuous material presence signals; comparing the continuous material presence signals of the first and second photocells to determine whether the continuous material presence signals of the first and second photocells are consistent; in a case that the continuous material presence signals of the first and second photocells are inconsistent, performing power-on delay processing, and determining that the first or second photocell is faulty when the power-on delay reaches a third predetermined time, and issuing an abnormal photocell alarm.

2. The method of claim 1, wherein, The first photocell is an included angle photocell, and the second photocell is an anti-lifting photocell.

3. The method of claim 1 or 2, wherein, In a case that the tobacco feeder is in a production state, the feeder has material, the steep angle belt runs, the horizontal belt gap moves forward, the first and second photocells detect material most of the time, and the gap detects no material.

4. The method of claim 1 or 2, wherein, The performing power-off delay processing on the output signals of the first and second photocells to convert the output signals of the first and second photocells into continuous material presence signals comprises: in a case that the output signal of the first photocell switches from a material presence state to a material absence state, maintaining the first photocell signal as the material presence state for a first predetermined time, and switching the first photocell signal to the material absence state after the first predetermined time; in a case that the output signal of the second photocell switches from the material presence state to the material absence state, maintaining the second photocell signal as the material presence state for the first predetermined time, and switching the second photocell signal to the material absence state after the first predetermined time. 5.A method for preventing tobacco feeder from being lifted, comprising: obtaining output signals of first and second photocells of a tobacco feeder, wherein the first and second photocells are both steep angle with material photocells; comparing the output signals of the first and second photocells to determine whether the first and second photocells are faulty; wherein the comparing the output signals of the first and second photocells to determine whether the first and second photocells are faulty comprises: The output signals of the first photoelectric tube and the second photoelectric tube are processed by time delay when the tobacco feeder is in a production state, and whether the first photoelectric tube and the second photoelectric tube are faulty is determined by comparing the output signals of the first photoelectric tube and the second photoelectric tube after time delay processing; The output signals of the first photoelectric tube and the second photoelectric tube are processed by time delay when the tobacco feeder is in a production state, and whether the first photoelectric tube and the second photoelectric tube are faulty is determined by comparing the output signals of the first photoelectric tube and the second photoelectric tube after time delay processing; The output signal of the photoelectric tube is processed by time delay when the output signal of the photoelectric tube is in a material state; Whether the output signal of the photoelectric tube is continuously in a material state within a second predetermined time is determined; If the output signal of the photoelectric tube is continuously in a material state within the second predetermined time, it is determined that the photoelectric tube is abnormal, wherein the photoelectric tube is the first photoelectric tube or the second photoelectric tube.

6. The method of claim 1 or 2 or 5, wherein, The output signals of the first photoelectric tube and the second photoelectric tube are processed by time delay when the tobacco feeder is in a production state, and whether the first photoelectric tube and the second photoelectric tube are faulty is determined by comparing the output signals of the first photoelectric tube and the second photoelectric tube after time delay processing; If the output signal of one of the first photoelectric tube and the second photoelectric tube is in a material state and the output signal of the other photoelectric tube is in a non-material state when the tobacco feeder is in a shutdown state, it is determined that one of the first photoelectric tube and the second photoelectric tube is abnormal.

7. The method of claim 6, wherein, The output signals of the first photoelectric tube and the second photoelectric tube are processed by time delay when the tobacco feeder is in a production state, and whether the first photoelectric tube and the second photoelectric tube are faulty is determined by comparing the output signals of the first photoelectric tube and the second photoelectric tube after time delay processing; If the detection state of the included angle photoelectric tube is inconsistent with the detection state of the anti-arching photoelectric tube when the feeder is shutdown, the steep angle belt is not running, the material head does not detect material by the photoelectric tube, and the horizontal belt is not running, it is determined that the first photoelectric tube or the second photoelectric tube is faulty, and an abnormal alarm of the photoelectric tube is sent after time delay for a fourth predetermined time.

8. The method of claim 1 or 2 or 5, wherein, The output signals of the first photoelectric tube and the second photoelectric tube are processed by time delay when the tobacco feeder is in a production state, and whether the first photoelectric tube and the second photoelectric tube are faulty is determined by comparing the output signals of the first photoelectric tube and the second photoelectric tube after time delay processing; When the tobacco feeder is in a transition state, whether the duration of a first situation reaches a third predetermined time is determined, wherein the first situation is a situation that the output signal of one of the first photoelectric tube and the second photoelectric tube is in a material state and the output signal of the other photoelectric tube is in a non-material state; If the duration of the first situation reaches the third predetermined time, an abnormal alarm is sent.

9. A tobacco feeder anti-arching device, comprising: A signal acquisition module configured to acquire output signals of first and second photoelectric tubes of a tobacco feeder, wherein the first and second photoelectric tubes are both steep angle belt material photoelectric tubes; A fault detection module configured to compare the output signals of the first and second photoelectric tubes to determine whether the first and second photoelectric tubes are faulty; The fault detection module is configured to, in the case that the tobacco feeder is in a production state, perform time delay processing on the output signals of the first photoelectric tube and the second photoelectric tube, compare the output signals of the first photoelectric tube and the second photoelectric tube after time delay processing, and determine whether the first photoelectric tube and the second photoelectric tube have faults. The fault detection module is configured to, in the case that the output signals of the first photoelectric tube and the second photoelectric tube are compared, the output signals of the first photoelectric tube and the second photoelectric tube after time delay processing are compared, and whether the first photoelectric tube and the second photoelectric tube have faults are determined, perform power-off time delay processing on the output signals of the photoelectric tube in the case that the output signals of the photoelectric tube are in a material state, determine whether the output signals of the photoelectric tube are continuously in the material state within a second predetermined time, and determine that the photoelectric tube is abnormal in the case that the output signals of the photoelectric tube are continuously in the material state within the second predetermined time, wherein the photoelectric tube is the first photoelectric tube or the second photoelectric tube.

10. A tobacco feeder anti-overhead device, comprising: a signal acquisition module configured to acquire output signals of a first photoelectric tube and a second photoelectric tube of a tobacco feeder, wherein the first photoelectric tube and the second photoelectric tube are both steep angle with material photoelectric tubes; a fault detection module configured to compare the output signals of the first photoelectric tube and the second photoelectric tube, and determine whether the first photoelectric tube and the second photoelectric tube have faults; The fault detection module is configured to, in the case that the tobacco feeder is in a production state, perform time delay processing on the output signals of the first photoelectric tube and the second photoelectric tube, compare the output signals of the first photoelectric tube and the second photoelectric tube after time delay processing, and determine whether the first photoelectric tube and the second photoelectric tube have faults. The fault detection module is configured to, in the case that the output signals of the first photoelectric tube and the second photoelectric tube are compared, the output signals of the first photoelectric tube and the second photoelectric tube after time delay processing are compared, and whether the first photoelectric tube and the second photoelectric tube have faults are determined, perform power-off time delay processing on the output signals of the photoelectric tube in the case that the output signals of the photoelectric tube are in a material state, determine whether the output signals of the photoelectric tube are continuously in the material state within a second predetermined time, and determine that the photoelectric tube is abnormal in the case that the output signals of the photoelectric tube are continuously in the material state within the second predetermined time, wherein the photoelectric tube is the first photoelectric tube or the second photoelectric tube.

11. A tobacco feeder anti-overhead device, comprising: a memory for storing instructions; a processor for executing the instructions, so that the tobacco feeder anti-overhead device executes the method of any one of claims 1-8.

12. A tobacco feeder comprising the tobacco feeder anti-overhead device of any one of claims 9 to 11.

13. A computer readable storage medium, wherein, The computer readable storage medium stores computer instructions, which are executed by the processor to implement the method of any one of claims 1-8. The computer readable storage medium stores computer instructions, which are executed by the processor to implement the method of any one of claims 1-8.

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