CN111776664A - Tobacco blocking early warning method and device - Google Patents

Tobacco blocking early warning method and device Download PDF

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Publication number
CN111776664A
CN111776664A CN202010675186.6A CN202010675186A CN111776664A CN 111776664 A CN111776664 A CN 111776664A CN 202010675186 A CN202010675186 A CN 202010675186A CN 111776664 A CN111776664 A CN 111776664A
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early warning
tobacco
detection point
distance
filtering
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CN202010675186.6A
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CN111776664B (en
Inventor
张福新
李晨曦
张兵
刘振强
李高阳
葛托
李冬
赵冠荣
赵梦达
崔庆育
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Shanghai Tobacco Group Co Ltd
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Shanghai Tobacco Group Co Ltd
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
    • B65G43/00—Control devices, e.g. for safety, warning or fault-correcting
    • B65G43/08—Control devices operated by article or material being fed, conveyed or discharged
    • A—HUMAN NECESSITIES
    • A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24B—MANUFACTURE OR PREPARATION OF TOBACCO FOR SMOKING OR CHEWING; TOBACCO; SNUFF
    • A24B3/00—Preparing tobacco in the factory
    • A24B3/04—Humidifying or drying tobacco bunches or cut tobacco
    • A—HUMAN NECESSITIES
    • A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24B—MANUFACTURE OR PREPARATION OF TOBACCO FOR SMOKING OR CHEWING; TOBACCO; SNUFF
    • A24B3/00—Preparing tobacco in the factory
    • A24B3/10—Roasting or cooling tobacco
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
    • B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
    • B07B1/00—Sieving, screening, sifting, or sorting solid materials using networks, gratings, grids, or the like
    • B07B1/28—Moving screens not otherwise provided for, e.g. swinging, reciprocating, rocking, tilting or wobbling screens
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
    • B65G15/00—Conveyors having endless load-conveying surfaces, i.e. belts and like continuous members, to which tractive effort is transmitted by means other than endless driving elements of similar configuration
    • B65G15/30—Belts or like endless load-carriers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
    • B65G31/00—Mechanical throwing machines for articles or solid materials
    • B65G31/02—Mechanical throwing machines for articles or solid materials comprising belts
    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B21/00—Alarms responsive to a single specified undesired or abnormal condition and not otherwise provided for
    • G08B21/18—Status alarms
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
    • B65G2201/00—Indexing codes relating to handling devices, e.g. conveyors, characterised by the type of product or load being conveyed or handled
    • B65G2201/02—Articles
    • B65G2201/0202—Agricultural and processed food products
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
    • B65G2203/00—Indexing code relating to control or detection of the articles or the load carriers during conveying
    • B65G2203/04—Detection means
    • B65G2203/042—Sensors
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
    • B65G2203/00—Indexing code relating to control or detection of the articles or the load carriers during conveying
    • B65G2203/04—Detection means
    • B65G2203/042—Sensors
    • B65G2203/044—Optical
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P90/00—Enabling technologies with a potential contribution to greenhouse gas [GHG] emissions mitigation
    • Y02P90/02—Total factory control, e.g. smart factories, flexible manufacturing systems [FMS] or integrated manufacturing systems [IMS]

Abstract

The embodiment of the invention provides a tobacco blocking early warning method and device. The method comprises the following steps: acquiring the distance between the detection point and the top end of the tobacco leaf passing through the position right below the detection point; and if the height of the tobacco leaf stack is judged and known to meet the preset early warning condition according to the distance, sending an early warning signal. According to the tobacco blockage early warning method and device provided by the embodiment of the invention, the distance between the detection point and the top end of the tobacco passing through the position right below the detection point is obtained, and whether the height of the tobacco accumulation meets the preset early warning condition or not is judged according to the distance to carry out early warning.

Description

Tobacco blocking early warning method and device
Technical Field
The invention relates to the technical field of computers, in particular to a tobacco blocking early warning method and device.
Background
The problem of material blockage is a chronic disease in the production operation of a tobacco processing assembly line, tobacco leaves at a feeding section are often blocked and blocked due to the reasons of raw materials, process requirements and the like at a tobacco curing section of a tobacco processing workshop, the fault processing time of each blockage is obviously longer than that of other faults in the workshop, and great influence is caused on production continuity, process index control, product quality and the like.
At present, the tobacco blocking early warning is mainly carried out by a photoelectric detection or image processing method, but when the early warning is sent out by the method, the tobacco on a conveying belt is accumulated, the blocking is about to occur or occurs, the early warning is not timely enough, and the effect of preventing the blocking cannot be well played.
Disclosure of Invention
The embodiment of the invention provides a tobacco blockage early warning method and device, which are used for overcoming or at least partially overcoming the defect of untimely early warning in the prior art.
In a first aspect, an embodiment of the present invention provides a tobacco blockage early warning method, including:
acquiring the distance between a detection point and the top end of the tobacco leaf passing through the position right below the detection point;
and if the height of the tobacco leaf stack is judged and known to meet the preset early warning condition according to the distance, sending an early warning signal.
Preferably, the specific step of judging that the height of the tobacco leaf stack meets the preset early warning condition according to the distance comprises the following steps:
taking the distance as a sampling signal, filtering the sampling signal, and obtaining the current distance after filtering;
and if the current distance after filtering is judged and obtained to be smaller than a preset critical value, and the duration continuously smaller than the critical value reaches a preset duration threshold, the height of the tobacco leaf stack meets a preset early warning condition.
Preferably, the specific step of filtering the sampling signal includes:
and carrying out segment difference counting filtering on the sampling signals.
Preferably, after the step count filtering is performed on the sampling signal, the method further includes:
and performing moving average filtering on the sampling signal after the step difference counting filtering.
Preferably, the specific step of obtaining the distance between the detection point and the top end of the tobacco leaf passing through the position right below the detection point currently comprises:
and obtaining the distance between the detection point and the top end of the tobacco leaf passing through the position right below the detection point currently through laser ranging.
Preferably, before the obtaining of the distance between the detection point and the top end of the tobacco leaf passing through the position right below the detection point, the method further includes:
and determining the detection point according to the throwing parameters of the tobacco leaves.
Preferably, the specific step of determining the position of the detection point according to the throwing parameters of the tobacco leaves comprises:
acquiring the highest point of tobacco throwing accumulation according to the tobacco throwing parameters;
and selecting a point right above the highest point as the detection point.
In a second aspect, an embodiment of the present invention provides a tobacco blockage early warning device, including:
the distance measurement module is used for acquiring the distance between a detection point and the top end of the tobacco leaf passing through the position right below the detection point;
and the early warning module is used for sending out an early warning signal if the height of the tobacco leaf stack is judged to meet the preset early warning condition according to the distance.
In a third aspect, an embodiment of the present invention provides an electronic device, which includes a memory, a processor, and a computer program that is stored in the memory and is executable on the processor, and when the program is executed, the steps of the tobacco blockage warning method provided in any one of the various possible implementation manners of the first aspect are implemented.
In a fourth aspect, an embodiment of the present invention provides a non-transitory computer-readable storage medium, on which a computer program is stored, where the computer program, when executed by a processor, implements the steps of the tobacco blockage warning method according to any one of the various possible implementation manners of the first aspect.
According to the tobacco blockage early warning method and device provided by the embodiment of the invention, the distance between the detection point and the top end of the tobacco passing through the position right below the detection point is obtained, and whether the height of the tobacco accumulation meets the preset early warning condition or not is judged according to the distance to carry out early warning.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and those skilled in the art can also obtain other drawings according to the drawings without creative efforts.
Fig. 1 is a schematic flow chart of a tobacco blockage early warning method according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a tobacco blockage early warning device provided according to an embodiment of the present invention;
fig. 3 is a schematic physical structure diagram of an electronic device according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In order to overcome the problems in the prior art, the embodiment of the invention provides a tobacco blocking early warning method and a tobacco blocking early warning device.
Fig. 1 is a schematic flow chart of a tobacco blockage early warning method according to an embodiment of the invention. As shown in fig. 1, the method includes: and S101, obtaining the distance between the detection point and the top end of the tobacco leaf passing through the position right below the detection point.
Specifically, in the process that the tobacco leaves are conveyed through the conveyor belt, the tobacco leaves right below the currently-passing detection point are subjected to ranging according to a preset sampling interval, and the distance between the detection point and the top end of the tobacco leaves right below the currently-passing detection point is obtained.
The preset sampling interval may be in milliseconds.
The location of the detection point, including the height and distance from the drop point, may be predetermined. The embodiment of the present invention is not particularly limited thereto.
And S102, if the height of the tobacco leaf stack is judged to meet the preset early warning condition according to the distance, sending an early warning signal.
It can be understood that the tobacco leaves on the conveyor belt are continuously piled up too high, and blockage is easy to occur. The height of the detection point is fixed, so that the change of the distance between the detection point and the top end of the tobacco leaf passing through the position right below the detection point can reflect the change of the height of tobacco leaf stacking on the conveyor belt, and whether the height of the tobacco leaf stacking meets the preset early warning condition or not is judged.
The tobacco leaves are stacked to a too high height, which easily causes material blockage, so that the preset early warning condition can include the dimension of the height, such as a peak value or an equal average value.
It will be appreciated that occasional transient heights that are too high will not result in material blockage, in general. Therefore, the preset warning condition can also add a dimension of time, such as duration, to avoid false alarms caused by occasional transient altitude overshoot.
When the height of tobacco leaf pile up satisfies preset early warning condition, can send out at least one in early warning signals such as sound, light and electricity to remind the putty risk that will take place.
According to the embodiment of the invention, the distance between the detection point and the top end of the tobacco leaf passing through the position right below the detection point is obtained, whether the height of the tobacco leaf stack meets the preset early warning condition or not is judged according to the distance for early warning, and the method has the characteristics of accuracy, foresight, reliability and the like, can early warning more timely and accurately, has the characteristics of lower false alarm rate, higher reliability, accuracy, foresight, reliability and the like, can provide powerful support for ordered operation of a production line, enables an online early warning mode of the tobacco production line to be more diversified, can effectively avoid material blockage, reduce fault processing time, can improve the efficiency of tobacco production and reduce cost.
Based on the content of each embodiment, the specific steps of judging that the height of the tobacco leaf stack meets the preset early warning condition according to the distance include: and taking the distance as a sampling signal, filtering the sampling signal, and obtaining the filtered current distance.
Specifically, due to randomness and uncertainty of tobacco leaf accumulation, in order to effectively screen false alarm conditions, the distance between the collected detection point and the top end of the tobacco leaf passing through the position right below the detection point at present can be used as a sampling signal, and by filtering the sampling signal, under the condition that the numerical value is effective, the curve is smoothed, and the spine is eliminated.
And if the current distance after filtering is judged and obtained to be smaller than the preset critical value, and the duration continuously smaller than the critical value reaches the preset duration threshold, the height of the tobacco leaf stack meets the preset early warning condition.
Specifically, after the filtered current distance is obtained, whether the distance is smaller than a preset critical value is judged.
If the height of the tobacco leaves on the conveyor belt is less than the warning height, the tobacco leaves are stacked on the conveyor belt, and the tobacco leaves are blocked more probably; if the height of the tobacco leaves on the conveyor belt is less than the warning height, the probability of material blockage is low.
In order to avoid frequent alarm and unnecessary alarm caused by accidental overhigh instantaneous height, after the filtered current distance is judged and known to be smaller than a preset critical value, the time period from the sampling time of which the last judgment result is larger than the critical value before the current sampling time to the current sampling time is taken as the time duration that the current distance is smaller than the critical value, and the time length of the time duration is the time length which is continuously smaller than the critical value.
And the current sampling time refers to the sampling time corresponding to the current distance after filtering, and is the time for acquiring the distance between the detection point and the top end of the tobacco leaf passing through the position right below the detection point before filtering.
And after the duration which is continuously less than the critical value is obtained, judging whether the duration reaches a preset duration threshold value.
If the height does not reach the preset height, the change of the height of the tobacco leaf stack needing to be continuously followed is indicated, and an early warning signal is not sent temporarily; if the preset early warning condition is met, and an early warning signal is sent out.
According to the embodiment of the invention, the distance is used as the sampling signal, the sampling signal is filtered to obtain the filtered current distance, the filtered current distance is smaller than the preset critical value, and the time which is continuously smaller than the critical value reaches the preset time threshold value and is used as the early warning condition, so that false alarm can be effectively avoided, and the accuracy and reliability of early warning can be improved.
Based on the content of the foregoing embodiments, the specific step of filtering the sampling signal includes: and carrying out level difference counting filtering on the sampling signals.
Specifically, the basic idea of the step count filtering is: when there is a standard segment difference value, the 2-fold value of the segment difference value is automatically set to HIGH (HIGH), and the 1/2 value of the segment difference value is automatically set to LOW (LOW).
If the upper measurement value is A and the lower measurement value is B, then there is
HIGH | (a-B) × 2|, LOW | (a-B) ÷ 2 |.
If the current time is t, acquiring the step difference of the sampling values from the (t-n) th to the (t-1) th time, and determining a step difference interval, wherein the lower limit and the upper limit of the step difference interval are LOW and HIGH respectively; correspondingly, the upper limit and the lower limit of the section difference interval are subtracted from the height of the monitoring point to obtain a judgment interval; n is a preset first filtering period;
if the sampling value at the current moment is within the judgment interval, the output of the section difference counting filter at the t moment is the sampling value; if the sampling value at the current moment is lower than the lower limit of the judgment interval, the output of the section difference counting filter at the t moment is the lower limit of the judgment interval; and if the sampling value at the current moment is higher than the lower limit of the judgment interval, the output of the step difference counting filter at the t-th moment is the upper limit of the judgment interval.
Under the condition of ensuring the effective numerical value, the segment difference counting can make the output curve smooth and eliminate the sharp thorn.
According to the embodiment of the invention, the smooth curve is filtered through the segment difference counting, the spine is eliminated, the false alarm can be effectively avoided, and the accuracy and the reliability of the early warning can be improved.
Based on the content of the foregoing embodiments, after performing level difference count filtering on the sampling signal, the method further includes: and performing moving average filtering on the sampling signals subjected to the step difference counting filtering.
In particular, sporadic transient altitude is too high and may be referred to as random interference. For random interference, the step count filtering cannot be completely removed, so that after the step count filtering, the moving average filtering may be performed.
The step of moving average filtering comprises: designing a sampling container, setting a second filtering period N, regarding the collected values as a queue, performing bubble dereferencing on the data in a stack mode, wherein the self-defined number is (1, 2 and 3 … N), the first filtering value is an arithmetic mean value a in the sampling period, and the next filtering value is an arithmetic mean value from the 2 nd number to the N +1, and so on.
And if the current time is t, acquiring the arithmetic mean value of the sampling values after the step difference counting filtering from the (t-N +1) th time to the t-th time as the output of the sliding mean filtering at the t-th time.
The embodiment of the invention eliminates random interference through the moving average filtering, can effectively avoid false alarm and can improve the accuracy and reliability of early warning.
Based on the content of each embodiment, the specific step of obtaining the distance between the detection point and the top end of the tobacco leaf passing through the position right below the detection point currently comprises the following steps: and obtaining the distance between the detection point and the top end of the tobacco leaf passing through the position right below the detection point currently through laser ranging.
Specifically, as the tobacco leaves on the conveyor belt are conveyed continuously, the distance between the detection point and the top end of the tobacco leaves passing through the position right below the detection point can be obtained by a laser ranging method, and the distance can be measured quickly and timely.
The laser ranging can adopt a kirschner IL series laser ranging sensor. The kirnshi IL series laser ranging sensor is photoelectric detection equipment with an analog quantity output function, and mainly comprises an amplifier, a detection device and a transmission bus, wherein output signals can select signals such as switching value, 0-5V, 4-20mA, +/-5V and the like, so that the requirement on the accuracy and stability of a sampling value is high, and a 4-20mA signal with high anti-interference performance is selected as an output source.
According to the embodiment of the invention, the distance between the detection point and the top end of the tobacco leaf passing through the position right below the detection point is obtained through laser ranging, and the distance can be measured more quickly and timely, so that early warning can be performed more quickly and timely according to the distance.
Based on the content of each embodiment, before the distance between the detection point and the top end of the tobacco leaf passing through the position right below the detection point is obtained, the method further includes: and determining a detection point according to the throwing parameters of the tobacco leaves.
Specifically, detection points can be determined in advance according to the throwing parameters of the tobacco leaves so as to obtain higher early warning accuracy, reduce false alarms and improve reliability.
The material throwing parameters can comprise material throwing height, belt angular speed, carrier roller radius and the like.
The belt is used for throwing materials (throwing tobacco leaves), and is higher than the conveying belt.
According to the throwing parameters of the tobacco leaves, the throwing track of the tobacco leaves can be calculated, and a proper detection point is determined according to the throwing track of the tobacco leaves.
According to the embodiment of the invention, the detection points are determined according to the throwing parameters of the tobacco leaves, so that the accuracy and reliability of early warning can be improved.
Based on the content of each embodiment, the specific step of determining the position of the detection point according to the throwing parameter of the tobacco leaves comprises the following steps: and acquiring the highest point of tobacco throwing accumulation according to the tobacco throwing parameters.
Specifically, according to the throwing parameters of the tobacco leaves, the throwing track of the tobacco leaves is calculated, and the highest point of the tobacco leaf throwing accumulation is obtained.
In a common silk making process, the throwing height is 40cm, and the material is thrown in an area which is about 50cm long and 30cm wide on a vibrating groove with screening grids under the conveying of a belt.
L＝V*t
Figure BDA0002583792690000081
V＝ω*r
L＝ω*r*t≈60cm
Wherein L represents a throwing distance; v represents the horizontal velocity of the tobacco leaves; t represents the time of falling to the ground, and the time of dropping the tobacco leaves onto the conveyor belt from the throwing-out of the tobacco leaves; h represents the throwing height; g represents a gravity constant; ω represents belt angular velocity; r represents the idler radius.
According to the parameter calculation, the horizontal distance between the highest point of tobacco leaf throwing accumulation and the belt throwing point is 60 cm.
And selecting a point right above the highest point as a detection point.
Specifically, a proper height is selected right above the highest point of tobacco throwing and stacking, and a detection point is determined.
Preferably, the height of the detection point may be higher than the height of the throwing point.
According to the embodiment of the invention, the highest point of tobacco leaf throwing accumulation is obtained according to the tobacco leaf throwing parameters, and a point is selected right above the highest point to serve as a detection point, so that the accuracy and reliability of early warning can be improved.
Fig. 2 is a schematic structural diagram of a tobacco blockage early warning device provided by an embodiment of the invention. Based on the content of the above embodiments, as shown in fig. 2, the apparatus includes a ranging module 201 and an early warning module 202, where:
the distance measurement module 201 is used for acquiring the distance between the detection point and the top end of the tobacco leaf passing right below the detection point;
and the early warning module 202 is used for sending out an early warning signal if the tobacco leaf stacking height is judged and known to meet the preset early warning condition according to the distance.
Specifically, the distance measuring module 201 is electrically connected to the early warning module 202.
The distance measuring module 201, which may be a laser sensor, is fixed by a sensor holder that is movable in a vertical direction and rotatable 180 ° in a horizontal direction.
In the process of conveying the tobacco leaves through the conveyor belt, the distance measuring module 201 measures the distance of the tobacco leaves passing through the position right below the detection point at present according to a preset sampling interval, and the distance between the detection point and the top end of the tobacco leaves passing through the position right below the detection point at present is obtained.
The early warning module 202 judges whether the height of tobacco leaf stacking meets the preset early warning condition according to the distance between the detection point and the top end of the tobacco leaf passing through the position right below the detection point, and when the height of tobacco leaf stacking meets the preset early warning condition, at least one of sound, light, electricity and other early warning signals can be sent out to remind the user of the risk of material blockage to occur.
The specific method and process for realizing the corresponding functions of each module included in the tobacco blockage early warning device are described in the embodiment of the tobacco blockage early warning method, and are not described herein again.
The tobacco blockage early warning device is used for the tobacco blockage early warning method in each embodiment. Therefore, the description and definition in the tobacco blockage early warning method in the foregoing embodiments can be used for understanding the execution modules in the embodiments of the present invention.
According to the embodiment of the invention, the distance between the detection point and the top end of the tobacco leaf passing through the position right below the detection point is obtained, whether the height of the tobacco leaf stack meets the preset early warning condition or not is judged according to the distance for early warning, and the method has the characteristics of accuracy, foresight, reliability and the like, can early warning more timely and accurately, has the characteristics of lower false alarm rate, higher reliability, accuracy, foresight, reliability and the like, can provide powerful support for ordered operation of a production line, enables an online early warning mode of the tobacco production line to be more diversified, can effectively avoid material blockage, reduce fault processing time, can improve the efficiency of tobacco production and reduce cost.
Fig. 3 is a schematic physical structure diagram of an electronic device according to an embodiment of the present invention. Based on the content of the above embodiment, as shown in fig. 3, the electronic device may include: a processor (processor)301, a memory (memory)302, and a bus 303; wherein, the processor 301 and the memory 302 complete the communication with each other through the bus 303; the processor 301 is configured to call computer program instructions stored in the memory 302 and executable on the processor 301 to execute the tobacco blockage warning method provided by the above embodiments of the method, for example, including: acquiring the distance between the detection point and the top end of the tobacco leaf passing through the position right below the detection point; and if the height of the tobacco leaf stack is judged and known to meet the preset early warning condition according to the distance, sending an early warning signal.
Another embodiment of the present invention discloses a computer program product, which includes a computer program stored on a non-transitory computer readable storage medium, the computer program includes program instructions, and when the program instructions are executed by a computer, the computer can execute the tobacco blockage warning method provided by the above-mentioned method embodiments, for example, the method includes: acquiring the distance between the detection point and the top end of the tobacco leaf passing through the position right below the detection point; and if the height of the tobacco leaf stack is judged and known to meet the preset early warning condition according to the distance, sending an early warning signal.
Furthermore, the logic instructions in the memory 302 may be implemented in software functional units and stored in a computer readable storage medium when sold or used as a stand-alone product. Based on such understanding, the technical solutions of the embodiments of the present invention may be essentially implemented or make a contribution to the prior art, or may be implemented in the form of a software product stored in a storage medium and including instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the methods of the embodiments of the present invention. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and other various media capable of storing program codes.
Another embodiment of the present invention provides a non-transitory computer-readable storage medium, where the non-transitory computer-readable storage medium stores computer instructions, and the computer instructions enable a computer to execute the method for early warning of tobacco blockage according to the embodiments of the method, for example, the method includes: acquiring the distance between the detection point and the top end of the tobacco leaf passing through the position right below the detection point; and if the height of the tobacco leaf stack is judged and known to meet the preset early warning condition according to the distance, sending an early warning signal.
The above-described embodiments of the apparatus are merely illustrative, and the units described as separate parts may or may not be physically separate, and the parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of the present embodiment. One of ordinary skill in the art can understand and implement it without inventive effort.
Through the above description of the embodiments, those skilled in the art will clearly understand that each embodiment can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware. It is understood that the above-described technical solutions may be embodied in the form of a software product, which may be stored in a computer-readable storage medium, such as ROM/RAM, magnetic disk, optical disk, etc., and includes several instructions for enabling a computer device (which may be a personal computer, a server, or a network device, etc.) to execute the method of the above-described embodiments or some parts of the embodiments.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.

Claims (10)

1. A tobacco blocking early warning method is characterized by comprising the following steps:
acquiring the distance between a detection point and the top end of the tobacco leaf passing through the position right below the detection point;
and if the height of the tobacco leaf stack is judged and known to meet the preset early warning condition according to the distance, sending an early warning signal.
2. The tobacco blockage early warning method according to claim 1, wherein the specific step of judging whether the height of tobacco stacking meets the preset early warning condition according to the distance comprises the following steps:
taking the distance as a sampling signal, filtering the sampling signal, and obtaining the current distance after filtering;
and if the current distance after filtering is judged and obtained to be smaller than a preset critical value, and the duration continuously smaller than the critical value reaches a preset duration threshold, the height of the tobacco leaf stack meets a preset early warning condition.
3. The tobacco blockage early warning method according to claim 2, wherein the specific step of filtering the sampling signal comprises:
and carrying out segment difference counting filtering on the sampling signals.
4. The tobacco blockage early warning method according to claim 3, wherein after the step difference counting filtering is performed on the sampling signal, the method further comprises the following steps:
and performing moving average filtering on the sampling signal after the step difference counting filtering.
5. The tobacco blockage early warning method according to claim 1, wherein the specific step of obtaining the distance from the detection point to the top end of the tobacco leaf passing right below the detection point currently comprises:
and obtaining the distance between the detection point and the top end of the tobacco leaf passing through the position right below the detection point currently through laser ranging.
6. The tobacco blockage early warning method according to any one of claims 1 to 5, wherein before the distance between the detection point and the top end of the tobacco leaf passing through the position right below the detection point is obtained, the method further comprises the following steps:
and determining the detection point according to the throwing parameters of the tobacco leaves.
7. The tobacco blockage early warning method according to claim 6, wherein the specific step of determining the position of the detection point according to the throwing parameters of the tobacco leaves comprises the following steps:
acquiring the highest point of tobacco throwing accumulation according to the tobacco throwing parameters;
and selecting a point right above the highest point as the detection point.
8. The utility model provides a tobacco leaf putty early warning device which characterized in that includes:
the distance measurement module is used for acquiring the distance between a detection point and the top end of the tobacco leaf passing through the position right below the detection point;
and the early warning module is used for sending out an early warning signal if the height of the tobacco leaf stack is judged to meet the preset early warning condition according to the distance.
9. An electronic device comprising a memory, a processor and a computer program stored on the memory and executable on the processor, wherein the processor implements the steps of the method of any one of claims 1 to 7 when executing the program.
10. A non-transitory computer readable storage medium having stored thereon a computer program, wherein the computer program when executed by a processor implements the steps of the method according to any one of claims 1 to 7.
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