Self-resetting method for disordered cigarette detection

Abstract

The invention discloses a self-resetting method for disordered cigarette detection, which comprises the following steps: in an initial state, carrying out disordered cigarette detection on a cigarette warehouse of a cigarette packaging unit, and giving an alarm when a disordered cigarette state is detected; in the door body opening stage, in response to the opening action of the smoke barrier door, the smoke barrier door displacement detection sensor is switched from the detection standby state to the triggering state, and alarming is stopped temporarily; a reset execution stage: in response to a reset instruction, stopping alarming; in the door body closing stage, in response to the closing action of the smoke barrier door, the smoke barrier door displacement detection sensor is switched from the trigger state to the detection standby state. According to the self-resetting method for disordered smoke detection, physical operation of opening the smoke barrier door can be directly mapped into a control signal, action, namely resetting control is achieved, the total delay from opening of the smoke barrier door to resetting is smaller than or equal to 250 ms, millisecond-level response is achieved, the resetting process after alarming does not need manual operation to the rear portion of equipment, potential safety hazards are eliminated, and the operation efficiency is improved. And the working efficiency is greatly improved.

Description

Technical Field

[0001] The present invention relates to the technical field of automatic detection of tobacco machinery, and more specifically, to a self-resetting method for detecting irregular smoke. Background Art

[0002] During the production process of cigarettes, cigarettes need to be transported. For example, after cigarettes are produced by cigarette making machines, they need to be transported to packaging machines. During the transportation process, cigarettes often need to be buffered by buffering equipment. During the process of cigarette transportation and the process of cigarette buffering equipment storing and discharging cigarettes, it is inevitable that cigarettes will be crooked. Crooked cigarettes are called "random cigarettes". Random cigarettes will cause cigarettes to have quality defects such as wrinkles, damage, and breakage. These defective cigarettes may be mixed into the finished cigarettes, causing quality defects in the finished products. In addition, the equipment shutdown and random cigarette handling caused by random cigarettes also increase the workload of operators and reduce the operating efficiency of the equipment.

[0003] The current GD packaging unit has the following technical defects: traditional alarm reset requires manual operation at the rear of the equipment, which poses a safety hazard and affects efficiency.

[0004] Therefore, there is an urgent need for a self-resetting method for smoke detection. Summary of the invention

[0005] The purpose of the present invention is to provide a self-resetting method for disorderly smoke detection to solve the problems in the above-mentioned prior art. The method can automatically reset after the disorderly smoke detection alarm, and the physical operation of opening the smoke barrier door is directly mapped to the control signal to realize the control of action and reset, and provide a three-in-one solution of online detection of cigarette quality, automatic alarm reset and equipment status interlocking control; the total delay from opening the smoke barrier door to completion of reset is ≤250ms, achieving millisecond-level response; based on machine vision, the alarm reset and control of disorderly smoke detection in the cigarette warehouse of the cigarette packaging unit are performed, which is particularly suitable for quality inspection and equipment interlocking control of medium and high-speed packaging machines such as GD and ZB47.

[0006] The present invention provides a self-resetting method for smoke detection, which includes:

[0007] Initial state: detect disorderly smoke in the cigarette storage of the cigarette packaging unit and give an alarm when disorderly smoke is detected;

[0008] Door opening stage: In response to the opening action of the smoke barrier door, the smoke barrier door displacement detection sensor for detecting the smoke barrier door displacement signal switches from the detection standby state to the trigger state, and stops the alarm for a short time;

[0009] Reset execution stage: respond to the reset instruction and stop the alarm;

[0010] Door closing stage: In response to the closing action of the smoke barrier door, the smoke barrier door displacement detection sensor for detecting the smoke barrier door displacement signal switches from a trigger state to a detection standby state.

[0011] The self-resetting method for smoke detection as described above, wherein preferably, the self-resetting control signals in the initial state, the door opening stage, the reset execution stage and the door closing stage include: a smoke barrier door displacement signal S1, an alarm status signal S3 and a watchdog pulse signal S4.

[0012] In the self-resetting method for smoke detection as described above, preferably, in the initial state, the smoke barrier door displacement signal S1 is at a low level, and the alarm state signal S3 is at a high level.

[0013] The self-resetting method for random smoke detection as described above, wherein preferably, in the initial state, random smoke detection is performed on the cigarette storage of the cigarette packaging unit, and an alarm is issued when a random smoke state is detected, including:

[0014] Based on machine vision, the cigarette packing unit cigarette warehouse is used for random cigarette detection;

[0015] The intelligent controller sends an alarm command to the alarm device based on the machine vision detection results of the smoke detection;

[0016] In response to the alarm instruction, the alarm device sounds an alarm and outputs a high level signal.

[0017] The self-resetting method for detecting disorderly cigarettes as described above, wherein preferably, the detecting disorderly cigarettes in the cigarette storage of the cigarette packaging machine unit based on machine vision comprises:

[0018] The cigarette warehouse of the cigarette packaging unit is inspected for irregular cigarettes through the dual-station AVT high frame rate camera and time-frequency flash light system.

[0019] In the self-resetting method for random smoke detection as described above, preferably, the intelligent controller sends an alarm instruction to the alarm according to the machine vision detection result of random smoke detection, including:

[0020] The intelligent controller compares the video parameter settings of normal and abnormal situations, and sends an alarm command to the alarm when the video parameter exceeds the preset threshold.

[0021] The self-resetting method for smoke detection as described above, wherein preferably, in the door opening stage, in response to the opening action of the smoke barrier door, the smoke barrier door displacement detection sensor for detecting the smoke barrier door displacement signal switches from the detection standby state to the trigger state, and temporarily stops the alarm, including:

[0022] At the initial moment of the door opening stage, in response to the operator opening the smoke barrier door, the smoke barrier door displacement signal S1 suddenly changes from a low level to a high level;

[0023] After a preset filtering delay, if the smoke barrier door displacement signal S1 continues to be a high level signal, the alarm state signal S3 is triggered and changes from a high level to a low level, and the alarm is temporarily reset.

[0024] The self-resetting method for smoke detection as described above, wherein preferably, in the reset execution stage, the step of responding to the reset instruction and stopping the alarm includes:

[0025] At the initial moment of the reset execution phase, the intelligent controller issues a reset command;

[0026] In response to the reset instruction of the intelligent controller, the alarm state signal S3 continues to be at a low level, and the alarm immediately stops the sound and light alarm;

[0027] During the reset execution phase, the smoke barrier door displacement signal S1 remains at a high level.

[0028] The self-resetting method for smoke disturbance detection as described above, wherein preferably, in the door closing stage, the smoke barrier door displacement detection sensor for detecting the smoke barrier door displacement signal in response to the closing action of the smoke barrier door switches from a trigger state to a detection standby state, including:

[0029] At the initial moment of the door closing stage, the operator completes the smoke handling process and closes the smoke barrier door. The smoke barrier door displacement signal S1 returns from a high level to a low level and re-enters the detection standby state;

[0030] The alarm status signal S3 remains at a low level until a new defect is triggered.

[0031] As described above, in the self-resetting method for smoke detection, preferably, in the initial state, the door opening stage, the reset execution stage and the door closing stage, the watchdog pulse signal S4 outputs pulses normally.

[0032] The present invention provides a self-resetting method for disorderly smoke detection, which can directly map the physical operation of opening the smoke barrier door into a control signal, realize the control of action-i.e. reset, and the total delay from the opening of the smoke barrier door to the completion of the reset is ≤250ms, realizing millisecond-level response. The reset process after the alarm does not require manual operation at the rear of the equipment, eliminating safety hazards and greatly improving work efficiency. A three-in-one solution of online detection of cigarette quality, automatic alarm reset and equipment status interlocking control is provided. The disorderly smoke detection in the cigarette warehouse of the cigarette packaging unit is alarm reset and controlled based on machine vision, which is particularly suitable for quality detection and equipment interlocking control of medium and high-speed packaging machines such as GD and ZB47. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] In order to make the purpose, technical solutions and advantages of the present invention more clear, the present invention will be further described below with reference to the accompanying drawings, in which:

[0034] Figure 1 A flow chart of an embodiment of a self-resetting method for smoke detection provided by the present invention;

[0035] Figure 2 This is a reset control timing diagram of an embodiment of the self-reset method for smoke detection provided by the present invention. DETAILED DESCRIPTION

[0036] Various exemplary embodiments of the present disclosure will now be described in detail with reference to the accompanying drawings. The description of the exemplary embodiments is merely illustrative and is in no way intended to limit the present disclosure and its application or use. The present disclosure can be implemented in many different forms and is not limited to the embodiments described herein. These embodiments are provided to make the present disclosure thorough and complete and to fully express the scope of the present disclosure to those skilled in the art. It should be noted that unless otherwise specifically stated, the relative arrangement of the components and steps, the composition of the materials, the numerical expressions and the numerical values ​​set forth in these embodiments should be interpreted as being merely exemplary and not as limiting.

[0037] The words "first", "second" and similar words used in this disclosure do not indicate any order, quantity or importance, but are only used to distinguish different parts. The words "include" or "comprises" and similar words mean that the elements before the word include the elements listed after the word, and do not exclude the possibility of including other elements. "Up", "down" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0038] In the present disclosure, when a specific component is described as being located between a first component and a second component, there may or may not be an intermediate component between the specific component and the first component or the second component. When a specific component is described as being connected to other components, the specific component may be directly connected to the other components without an intermediate component, or may not be directly connected to the other components but have an intermediate component.

[0039] All terms (including technical terms or scientific terms) used in the present disclosure have the same meanings as those understood by ordinary technicians in the field to which the present disclosure belongs, unless otherwise specifically defined. It should also be understood that terms defined in general dictionaries, such as general dictionaries, should be interpreted as having meanings consistent with their meanings in the context of the relevant technology, and should not be interpreted in an idealized or extremely formal sense, unless explicitly defined herein.

[0040] Technologies, methods, and equipment known to ordinary technicians in the relevant art may not be discussed in detail, but where appropriate, the technologies, methods, and equipment should be considered part of the specification.

[0041] like Figure 1 As shown, the self-resetting method for smoke detection provided in this embodiment includes the following steps in actual implementation:

[0042] Step S1, initial state: perform disorderly smoke detection on the cigarette storage of the cigarette packaging unit, and issue an alarm when disorderly smoke is detected.

[0043] The self-reset control signals in the initial state, the door opening stage, the reset execution stage and the door closing stage include: the smoke barrier door displacement signal S1, the alarm state signal S3 and the watchdog pulse signal S4. Among them, the door opening stage corresponds to the subsequent step S2, the reset execution stage corresponds to the subsequent step S3, and the door closing stage corresponds to the subsequent step S4.

[0044] Figure 2 shows the signal timing diagram of the reset control, in Figure 2 In the figure, the horizontal axis represents the time axis, the unit is milliseconds; the vertical axis represents the signal state, including high level or low level.

[0045] Figure 2 The definitions of the signals are as follows:

[0046] Signal S1 represents the displacement signal of the smoke barrier door. Specifically, through the detection of the smoke barrier door displacement detection sensor, when the smoke barrier door is opened, the fixed barrier bar at the bottom of the smoke barrier door leaves the smoke barrier door displacement detection sensor, and the smoke barrier door displacement detection sensor is triggered to obtain the smoke barrier door displacement signal. Among them, the smoke barrier door displacement detection sensor is a metal sensor, and the low level (0V) of signal S1 indicates: the door body is closed (the opening and closing angle of the smoke barrier door is <15°); the high level (24V) of signal S1 indicates: the door body is open (the opening and closing angle of the smoke barrier door is ≥25°).

[0047] Signal S3 represents an alarm status signal. Specifically, a high level indicates that the alarm is activated, and a low level indicates that the alarm is reset.

[0048] Signal S4 represents the watchdog pulse signal: Signal S4 is the system clock signal, which is a fixed pulse. The existence of this pulse can ensure the normal operation of the entire reset process. Signal S4 is a pulse signal with a period of 500ms and is used to monitor the operating status of the system.

[0049] In some embodiments of the present invention, the reset control signal also includes signal S2, which represents a valid signal after filtering signal S1. In one embodiment of the present invention, signal S2 can be obtained by delaying signal S1 through control software, and signal S2 can prevent short-term triggering of the smoke barrier door displacement detection sensor signal caused by machine vibration and other reasons. In another embodiment of the present invention, signal S2 is a stable signal obtained after processing by an RC filter circuit. Signal S2 is obtained by hardware filtering, which can resist mechanical vibration interference.

[0050] Specifically, in the initial state (corresponding to Figure 2 During the t0-t1 time period), the smoke barrier door displacement signal S1 is at a low level and the alarm status signal S3 is at a high level.

[0051] In one embodiment of the self-resetting method for smoke detection of the present invention, step S1 may specifically include:

[0052] Step S11: Based on machine vision, detect disorderly cigarettes in the cigarette storage of the cigarette packaging unit.

[0053] Specifically, in the present invention, a double-station AVT high frame rate camera and a time-frequency flash light system are used to detect disorderly cigarettes in the cigarette storage of a cigarette packaging unit. The pixel of the double-station AVT high frame rate camera is 1.8 million pixels.

[0054] Step S12: The intelligent (ARM) controller sends an alarm instruction to the alarm device according to the machine vision detection result of the smoke detection.

[0055] Specifically, the intelligent controller compares the video parameter settings of normal situations and abnormal situations, and sends an alarm instruction to the alarm after the video parameter exceeds a preset setting threshold.

[0056] Step S13: In response to the alarm instruction, the alarm device sounds an alarm and outputs a high level signal.

[0057] Among them, illustratively, the alarm mode of the alarm is sound and light alarm.

[0058] Step S2, door opening stage (corresponding to Figure 2 Time period t1-t2): In response to the opening action of the smoke barrier door, the smoke barrier door displacement detection sensor for detecting the smoke barrier door displacement signal switches from the detection standby state to the trigger state, and temporarily stops the alarm.

[0059] In one embodiment of the self-resetting method for smoke detection of the present invention, step S2 may specifically include:

[0060] Step S21 , at the initial moment (t1) of the door opening stage, in response to the operator opening the smoke barrier door, the smoke barrier door displacement signal S1 suddenly changes from a low level to a high level.

[0061] In the presence of mechanical vibration, the smoke barrier door displacement signal S1 may generate burrs.

[0062] Step S22: After a preset filtering delay (180ms-220ms, for example, 200ms) (corresponding to Figure 2 During the time period from t1+200ms to t2), if the smoke barrier door displacement signal S1 continues to be a high level signal, the alarm status signal S3 is triggered and changes from a high level to a low level, and the alarm is temporarily reset.

[0063] The preset time here is the signal filtering window T1, for example, 200 ms, which can eliminate jitter interference.

[0064] Step S3, reset execution phase (corresponding to Figure 2 t2-t3): In response to the reset instruction, the alarm stops.

[0065] In one embodiment of the self-resetting method for smoke detection of the present invention, step S3 may specifically include:

[0066] Step S31: At the initial moment (t2) of the reset execution phase, the intelligent controller issues a reset instruction.

[0067] Step S32, in response to the reset instruction of the intelligent controller, the alarm state signal S3 continues to be at a low level, and the alarm immediately stops the sound and light alarm.

[0068] Step S33: During the reset execution phase, the smoke barrier door displacement signal S1 remains at a high level.

[0069] Step S4, door closing stage (corresponding to Figure 2 Time period after t3): In response to the closing action of the smoke barrier door, the smoke barrier door displacement detection sensor for detecting the smoke barrier door displacement signal switches from a trigger state to a detection standby state.

[0070] In one embodiment of the self-resetting method for smoke detection of the present invention, step S4 may specifically include:

[0071] Step S41, at the initial moment (t3) of the door closing stage, the operator completes the smoke handling process and closes the smoke barrier door. The smoke barrier door displacement signal S1 is restored from a high level to a low level and re-enters the detection standby state.

[0072] in, Figure 2Where t3-t2 is the reset command response delay time T3, for example, 50ms. The reset command response delay time T3 is determined by the state of the smoke barrier door. When the smoke barrier door is closed, the smoke barrier door displacement signal S1 is low level, and when the smoke barrier door is opened, the smoke barrier door displacement signal S1 is high level. The time between the time t2 when the intelligent controller issues the reset command and the time (t3) when the operator closes the smoke barrier door is the reset command response delay time T3.

[0073] The total delay from the opening of the smoke barrier door to the completion of the reset is ≤250ms (t1 to t3 interval), achieving millisecond-level response.

[0074] Step S42: the alarm status signal S3 remains at a low level until a new defect is triggered.

[0075] Furthermore, if Figure 2 As shown, in the initial state, the door opening stage, the reset execution stage and the door closing stage, the watchdog pulse signal S4 outputs pulses normally. The watchdog timeout threshold T2 is ≤500ms. After exceeding the timeout threshold, the system restart will be triggered. The software watchdog can prevent the system from freezing.

[0076] Through the above analysis, it can be found that the effective signal S2 after filtering the signal S1 is actually a control signal, and the physical operation of opening the smoke barrier door can be directly mapped to the control signal to achieve action and reset.

[0077] The self-resetting method for disorderly smoke detection provided in the embodiment of the present invention can directly map the physical operation of opening the smoke barrier door into a control signal, realize the control of action-i.e. reset, and the total delay from the opening of the smoke barrier door to the completion of the reset is ≤250ms, realizing millisecond-level response. The reset process after the alarm does not require manual operation at the rear of the equipment, eliminating safety hazards and greatly improving work efficiency. It provides a three-in-one solution of online detection of cigarette quality, automatic alarm reset and equipment status interlocking control. It performs alarm reset and control on disorderly smoke detection in the cigarette warehouse of the cigarette packaging unit based on machine vision, which is particularly suitable for quality inspection and equipment interlocking control of medium and high-speed packaging machines such as GD and ZB47.

[0078] So far, various embodiments of the present disclosure have been described in detail. In order to avoid obscuring the concept of the present disclosure, some details known in the art are not described. Based on the above description, those skilled in the art can fully understand how to implement the technical solution disclosed here.

[0079] Although some specific embodiments of the present disclosure have been described in detail by way of examples, it should be understood by those skilled in the art that the above examples are for illustration only and are not intended to limit the scope of the present disclosure. It should be understood by those skilled in the art that the above embodiments may be modified or some technical features may be replaced by equivalents without departing from the scope and spirit of the present disclosure. The scope of the present disclosure is defined by the appended claims.

Claims

1. A self-resetting method for smoke detection, characterized in that: include: Initial state: detect disorderly smoke in the cigarette storage of the cigarette packaging unit and give an alarm when disorderly smoke is detected; Door opening stage: In response to the opening action of the smoke barrier door, the smoke barrier door displacement detection sensor for detecting the smoke barrier door displacement signal switches from the detection standby state to the trigger state, and stops the alarm for a short time; Reset execution stage: respond to the reset instruction and stop the alarm; Door closing stage: In response to the closing action of the smoke barrier door, the smoke barrier door displacement detection sensor for detecting the smoke barrier door displacement signal switches from a trigger state to a detection standby state.

2. The self-resetting method for smoke detection according to claim 1 is characterized in that: The self-reset control signals in the initial state, the door opening stage, the reset execution stage and the door closing stage include: a smoke barrier door displacement signal S1, an alarm state signal S3 and a watchdog pulse signal S4.

3. The self-resetting method for smoke detection according to claim 2 is characterized in that: In the initial state, the smoke barrier door displacement signal S1 is at a low level, and the alarm state signal S3 is at a high level.

4. The self-resetting method for smoke detection according to claim 2 is characterized in that: In the initial state, the cigarette packing unit cigarette warehouse is subjected to disorderly cigarette detection, and an alarm is issued when disorderly cigarette state is detected, including: Based on machine vision, the cigarette packing unit cigarette warehouse is used for random cigarette detection; The intelligent controller sends an alarm command to the alarm device based on the machine vision detection results of the smoke detection; In response to the alarm instruction, the alarm device sounds an alarm and outputs a high level signal.

5. The self-resetting method for smoke detection according to claim 4 is characterized in that: The method of detecting disorderly cigarettes in the cigarette storage of the cigarette packaging unit based on machine vision includes: The cigarette warehouse of the cigarette packaging unit is inspected for irregular cigarettes through the dual-station AVT high frame rate camera and time-frequency flash light system.

6. The self-resetting method for smoke detection according to claim 4, characterized in that: The intelligent controller sends an alarm instruction to the alarm device according to the machine vision detection result of the smoke detection, including: The intelligent controller compares the video parameter settings of normal and abnormal situations, and sends an alarm command to the alarm when the video parameter exceeds the preset threshold.

7. The self-resetting method for smoke detection according to claim 2, characterized in that: In the door opening stage, in response to the opening action of the smoke barrier door, the smoke barrier door displacement detection sensor for detecting the smoke barrier door displacement signal switches from the detection standby state to the trigger state and temporarily stops the alarm, including: At the initial moment of the door opening stage, in response to the operator opening the smoke barrier door, the smoke barrier door displacement signal S1 suddenly changes from a low level to a high level; After a preset filtering delay, if the smoke barrier door displacement signal S1 continues to be a high level signal, the alarm state signal S3 is triggered and changes from a high level to a low level, and the alarm is temporarily reset.

8. The self-resetting method for smoke detection according to claim 1, characterized in that: In the reset execution stage, the step of responding to the reset instruction and stopping the alarm includes: At the initial moment of the reset execution phase, the intelligent controller issues a reset command; In response to the reset instruction of the intelligent controller, the alarm state signal S3 continues to be at a low level, and the alarm immediately stops the sound and light alarm; During the reset execution phase, the smoke barrier door displacement signal S1 remains at a high level.

9. The self-resetting method for smoke detection according to claim 2, characterized in that: In the door closing stage, the smoke barrier door displacement detection sensor for detecting the smoke barrier door displacement signal switches from a trigger state to a detection standby state in response to the closing action of the smoke barrier door, including: At the initial moment of the door closing stage, the operator completes the smoke handling process and closes the smoke barrier door. The smoke barrier door displacement signal S1 returns from a high level to a low level and re-enters the detection standby state; The alarm status signal S3 remains at a low level until a new defect is triggered.

10. The self-resetting method for smoke detection according to claim 2, characterized in that: In the initial state, the door opening stage, the reset execution stage and the door closing stage, the watchdog pulse signal S4 outputs pulses normally.

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