CN113928869B - Method and system for controlling feeding of expanded cut tobacco produced by tobacco shred manufacturing - Google Patents
Method and system for controlling feeding of expanded cut tobacco produced by tobacco shred manufacturing Download PDFInfo
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- CN113928869B CN113928869B CN202111317992.7A CN202111317992A CN113928869B CN 113928869 B CN113928869 B CN 113928869B CN 202111317992 A CN202111317992 A CN 202111317992A CN 113928869 B CN113928869 B CN 113928869B
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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
- B65G65/00—Loading or unloading
- B65G65/005—Control arrangements
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- 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
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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
- B65G2201/00—Indexing codes relating to handling devices, e.g. conveyors, characterised by the type of product or load being conveyed or handled
- B65G2201/04—Bulk
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- 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]
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- Manufacturing Of Cigar And Cigarette Tobacco (AREA)
Abstract
The invention provides a cabinet entering control method and a cabinet entering control system for expanded cut tobacco produced by tobacco shred manufacturing, belonging to the technical field of tobacco shred manufacturing, wherein the cabinet entering control method for the expanded cut tobacco produced by tobacco shred manufacturing comprises the following steps: detecting whether expanded cut tobacco passes through a blanking device in real time, and outputting a first signal or a second signal; obtaining the first signal or the second signal and judging whether the air supply condition is met; increasing an equivalent value every second according to the second signal to obtain an accumulated value; judging whether the accumulated value is larger than a preset weight threshold value or not; if the accumulated value is less than the preset weight threshold value, continuously keeping increasing one equivalent value per second; if the accumulated value is larger than the preset weight threshold value, issuing work order information according to the current MES system and sending the work order information to a storage cabinet; under the condition of basically not adding additional equipment, the control of the cabinet feeding process of the expanded cut tobacco is realized by the improved method and system, so that a good operation effect is achieved, and the method has high popularization value.
Description
Technical Field
The invention belongs to the technical field of tobacco shred manufacturing, and particularly relates to a cabinet feeding control method and system for expanded cut tobacco produced by tobacco shred manufacturing.
Background
The one-time moistening and cabinet-entering process of the expanded cut tobacco generally comprises two steps:
the method comprises the following steps: the tobacco shred cabinet entering process: after the expanded tobacco leaves are cut into shreds in the leaf processing procedure, the shreds are fed by wind power to a feeder for buffering in the expanded tobacco processing procedure, after the cabinet entering equipment is started for the first time, the expanded tobacco shreds are fed quantitatively, after the electronic belt scale is used for dynamic metering, the tobacco shreds enter a moisture regaining roller, under the action of a water adding and heating control loop, the tobacco shreds are conveyed to a belt of a cabinet entering distribution vehicle by a belt, and finally the tobacco shreds are moved in a point motion and a reciprocating motion of the cloth belt on the cloth vehicle to be uniformly laid in a storage cabinet. Thereby realizing the purposes of balancing moisture and components of the cut tobacco entering the cabinet and the fermentation process.
Step two: entering a cabinet tobacco shred information transmission process: after the cabinet entering equipment is started in sequence, the cut tobacco is quantitatively fed by the feeding lifting belt limiting tube, the electronic belt scale starts to measure under the control of a constant flow mode, and when the accumulated amount is larger than 50Kg, the accumulated amount can be transmitted into the storage cabinet according to the information of the work order issued by the MES system so as to provide information service for subsequent production.
The automatic storage process of the information of the tobacco shred entering the cabinet and the storage cabinet is realized through the two steps.
With the adjustment of the process route, the cut tobacco is fed by wind power and directly fed into a distribution vehicle, a distribution belt, a distribution vehicle and a distribution belt to be directly fed into a cabinet, and processing links such as a cabinet feeding machine, a belt scale, a moisture regain cylinder and the like are eliminated; on one hand, the breaking link is reduced, the insect breeding environment is reduced, and simultaneously, the energy consumption of water, electricity, gas and steam is saved. Although the tobacco shreds can be normally put into the cabinet, the tobacco shreds can normally carry out moisture balance, component balance and fermentation, the loss of the online weighing function of the tobacco shreds is caused due to the fact that a metering electronic belt scale is cancelled, the threshold value of the weighing accumulated value required by information transmission in the second step cannot be solved, the information of the storage cabinet cannot be normally transmitted, and great inconvenience is brought to the connection of production shifts.
Disclosure of Invention
The embodiment of the invention provides a cabinet entering control method and a cabinet entering control system for expanded cut tobacco in tobacco shred production, and aims to solve the problems that an online weighing function of cut tobacco is lost after a metering electronic belt scale is cancelled in the conventional cabinet entering control system for expanded cut tobacco, and a nominal accumulation value threshold value required by information transmission in the second step cannot be solved, so that the information of a storage cabinet cannot be normally transmitted, and great inconvenience is brought to the production shift connection.
In view of the above problems, the technical solution proposed by the present invention is:
a cabinet entering control method for expanded cut tobacco produced by tobacco shred manufacturing comprises the following steps:
detecting whether expanded cut tobacco passes through the blanking device in real time, and outputting a first signal or a second signal;
obtaining the first signal or the second signal and judging whether the wind conveying condition is met;
increasing an equivalent value every second according to the second signal to obtain an accumulated value;
judging whether the accumulated value is larger than the preset weight threshold value or not; if the accumulated value is less than the preset weight threshold value, continuously keeping increasing one equivalent value per second; and if the accumulated value is larger than the preset weight threshold value, issuing work order information according to the current MES system and sending the work order information to the storage cabinet.
As a preferred technical solution of the present invention, the detecting whether expanded cut tobacco passes through the blanking device in real time and outputting the first signal or the second signal specifically includes:
when detecting that the expanded cut tobacco passes through the blanking device in real time, outputting the first signal;
and outputting the second signal when detecting that the non-expanded cut tobacco passes through the blanking device in real time.
As a preferable technical solution of the present invention, the obtaining the first signal or the second signal to determine whether the wind power condition is met specifically includes:
if the irregular first signal and the irregular second signal are obtained, starting a timer, and enabling the tobacco shred pneumatic conveying equipment to be in a pneumatic conveying starting state;
and if the second signal is obtained, the timer is not started, and the tobacco shred pneumatic conveying equipment is in a normal state and has tobacco shred pneumatic conveying conditions.
As a preferred technical solution of the present invention, if the irregular first signal and the irregular second signal are obtained, the timer is started, and after the tobacco shred pneumatic conveying device is in the pneumatic conveying starting state, the method further includes:
and acquiring a first output duration of a first signal monitored by a timer in real time, and if the first output duration is greater than or equal to a first duration threshold, alarming and stopping the tobacco shred feeding equipment.
As a preferred technical scheme of the invention, the work order information comprises cut tobacco batch, name of the cigarette brand and code of the cigarette brand.
As a preferred technical solution of the present invention, after determining whether the accumulated value is greater than a preset weight threshold, the method further includes:
and acquiring a second output time length of the second signal monitored by the timer in real time, and judging the cut tobacco pneumatic conveying interruption or termination according to the second output time length.
As a preferred technical solution of the present invention, the obtaining a second output duration of the second signal monitored by the timer in real time, and determining interruption or end of tobacco shred air delivery according to the second output duration specifically includes:
if the second output time length is less than or equal to a second time length threshold value, judging that the tobacco shred pneumatic conveying is interrupted;
and if the second output time length is greater than a second time length threshold value, judging that the tobacco shred pneumatic conveying is finished.
On the other hand, the embodiment of the invention also provides a control system for feeding expanded cut tobacco into a cabinet in the tobacco shred production, which comprises the following steps:
the photoelectric tube is used for detecting whether expanded cut tobacco passes through the blanking device in real time and outputting a first signal or a second signal;
the obtaining module is used for obtaining the first signal or the second signal and judging whether the wind conveying condition is met;
the accumulation module is used for increasing an equivalent value every second according to the second signal to obtain an accumulated value;
and the judging module is used for judging whether the accumulated value is greater than a preset weight threshold value.
The technical scheme provided by the embodiment of the invention has the beneficial effects that at least: under the automatic operation state of the equipment, when a photoelectric tube detects a material signal, the material signal is accumulated at regular time according to a predefined equivalent value, so that an accumulated value is output, when the accumulated value is greater than a preset weight threshold value, the information of the storage cabinet can be transmitted, so that the normal transmission of batch information under a belt scale feeding mode is realized, under the condition that no new equipment is basically added, the control of the cabinet feeding process of expanded cut tobacco is realized through an improved method and a system, a good operation effect is achieved, and the popularization value is high.
The above description is only an overview of the technical solutions of the present invention, and the present invention can be implemented in accordance with the content of the description so as to make the technical means of the present invention more clearly understood, and the above and other objects, features, and advantages of the present invention will be more clearly understood.
Drawings
FIG. 1 is a flow chart of a method for controlling the feeding of expanded cut tobacco into a cabinet in the production of cut tobacco;
fig. 2 is a schematic structural diagram of a cabinet entering control system for producing expanded cut tobacco by tobacco shred manufacturing.
Description of reference numerals: 100. a photoelectric tube; 200. obtaining a module; 300. an accumulation module; 400. a judgment module; 500. and a monitoring module.
Description of the preferred embodiment
In order to make the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.
Thus, the following detailed description of the embodiments of the present invention, as presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
Examples
Referring to the attached figure 1, the invention provides a technical scheme: a cabinet feeding control method for expanded cut tobacco produced by tobacco shred manufacturing is characterized in that a photoelectric tube 100 is mounted at the outlet end of a blanking device and used for monitoring whether the outlet end of the blanking device is blocked or not in real time.
Among them, the photoelectric cell 100 is a basic photoelectric conversion device based on an external photoelectric effect. The photocell 100 may convert the optical signal into an electrical signal. The photoelectric cell 100 is divided into a vacuum photoelectric cell 100 and an air-filled photoelectric cell 100. The typical structure of the photocell 100 is that a spherical glass shell is vacuumized, a layer of photoelectric material is coated on the inner hemispherical surface to serve as a cathode, and a small spherical or small annular metal is placed in the center of a sphere to serve as an anode. If the ball is filled with low-pressure inert gas, the gas-filled photoelectric cell 100 is formed. The photoelectrons collide with gas molecules during their flight to the anode to ionize the gas, increasing the sensitivity of the photocell 100. The metal used as the photocathode comprises alkali metal, mercury, gold, silver and the like, and can meet the requirements of different wave bands. The photocell 100 has low sensitivity, large volume and is easy to break, and has been replaced by a solid-state photoelectric device.
The control method for feeding expanded cut tobacco into the cabinet comprises the following steps:
s1, detecting whether expanded cut tobacco passes through a blanking device in real time, and outputting a first signal or a second signal.
Specifically, when the expanded cut tobacco passing through the blanking device is detected in real time, the first signal is output; and outputting the second signal when detecting that the non-expanded cut tobacco passes through the blanking device in real time.
And S2, acquiring the first signal or the second signal and judging whether the wind conveying condition is met.
Specifically, if the irregular first signal and the irregular second signal are obtained, a timer is started, and the tobacco shred pneumatic conveying equipment is in a pneumatic conveying starting state; and if the second signal is obtained, the timer is not started, and the tobacco shred pneumatic conveying equipment is in a normal state and has tobacco shred pneumatic conveying conditions.
That is, since the cut tobacco is conveyed in an intermittent state, the photoelectric tube 100 is instantly connected or disconnected, and thus, the first signal and the second signal are irregular; and when the first signal does not exceed the first time length threshold value, the blanking device is in a non-blocking state.
Further, a first output duration of a first signal monitored by the timer in real time is obtained, and if the first output duration is greater than or equal to a first duration threshold value, the cut tobacco feeding equipment alarms and stops.
Therefore, it can be clear that if the first signal exceeds the first time threshold, namely the outlet end of the blanking device is in a material blocking state, the previous cut tobacco feeding equipment needs to output a material blocking alarm and stop feeding.
And S3, increasing an equivalent value every second according to the second signal to obtain an accumulated value.
It should be noted that the equivalent value is a parameter set according to the actual flow rate of the conveying equipment in the actual production process, and therefore, detailed description thereof is omitted here.
S4, judging whether the accumulated value is larger than the preset weight threshold value or not; if the accumulated value is smaller than the preset weight threshold value, continuously keeping increasing one equivalent value per second; and if the accumulated value is larger than the preset weight threshold value, issuing work order information according to the current MES system and sending the work order information to the storage cabinet.
And S5, acquiring a second output time length of the second signal monitored by the timer in real time, and judging cut tobacco pneumatic conveying interruption or ending according to the second output time length.
If the second output time length is less than or equal to a second time length threshold value, judging that the tobacco shred pneumatic conveying is interrupted; and if the second output time length is greater than a second time length threshold value, judging that the tobacco shred pneumatic conveying is finished.
Then, after the cut tobacco pneumatic conveying interruption is judged, the first signal can be received again, the equivalent value can be accumulated continuously and an accumulated value can be obtained, and finally, the work order information is issued under the condition that the equivalent value is equal to or larger than a preset threshold value; and after the judgment that the pneumatic conveying of the tobacco shreds is finished, clearing the accumulated value of the tobacco shreds this time and accumulating again.
In a preferred embodiment of the invention, the work order information includes tobacco shred batches, name of the cigarette brand and code of the cigarette brand.
Examples
Referring to the attached fig. 2, the embodiment of the present invention further discloses a control system for feeding expanded cut tobacco into a cabinet in the tobacco shred production, which comprises:
and the photoelectric tube 100 is used for detecting whether expanded cut tobacco passes through the blanking device in real time and outputting a first signal or a second signal.
An obtaining module 200, configured to obtain the first signal or the second signal, and determine whether the wind sending condition is met.
The accumulation module 300 is configured to increase an equivalent value every second according to the second signal to obtain an accumulated value.
The determining module 400 is configured to determine whether the accumulated value is greater than a preset weight threshold.
And the monitoring module 500 is configured to obtain a second output duration of the second signal monitored by the timer in real time, and judge that the cut tobacco pneumatic conveying is interrupted or ended according to the second output duration.
In the foregoing detailed description, various features are grouped together in a single embodiment for the purpose of streamlining the disclosure. This method of disclosure is not to be interpreted as reflecting an intention that the claimed embodiments of the subject matter require more features than are expressly recited in each claim. Rather, as the following claims reflect, invention lies in less than all features of a single disclosed embodiment. Thus, the following claims are hereby expressly incorporated into the detailed description, with each claim standing on its own as a separate preferred embodiment of the invention.
Those of skill would further appreciate that the various illustrative logical blocks, modules, circuits, and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware, computer software, or combinations of both. To clearly illustrate this interchangeability of hardware and software, various illustrative components, blocks, modules, circuits, and steps have been described above generally in terms of their functionality. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the overall system. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present disclosure.
The steps of a method or algorithm described in connection with the embodiments disclosed herein may be embodied directly in hardware, in a software module executed by a processor, or in a combination of the two. A software module may reside in RAM memory, flash memory, ROM memory, EPROM memory, EEPROM memory, registers, hard disk, a removable disk, a CD-ROM, or any other form of storage medium known in the art. An exemplary storage medium is coupled to the processor such the processor can read information from, and write information to, the storage medium. Of course, the storage medium may also be integral to the processor. The processor and the storage medium may reside in an ASIC. The ASIC may reside in a user terminal. Of course, the processor and the storage medium may reside as discrete components in a user terminal.
For a software implementation, the techniques described herein may be implemented with modules (e.g., procedures, functions, and so on) that perform the functions described herein. The software codes may be stored in memory units and executed by processors. The memory unit may be implemented within the processor or external to the processor, in which case it can be communicatively coupled to the processor via various means as is known in the art.
What has been described above includes examples of one or more embodiments. It is, of course, not possible to describe every conceivable combination of components or methodologies for purposes of describing the aforementioned embodiments, but one of ordinary skill in the art may recognize that many further combinations and permutations of various embodiments are possible. Accordingly, the embodiments described herein are intended to embrace all such alterations, modifications and variations that fall within the scope of the appended claims. Furthermore, to the extent that the term "includes" is used in either the detailed description or the claims, such term is intended to be inclusive in a manner similar to the term "comprising" as "comprising" is interpreted when employed as a transitional word in a claim. Furthermore, any use of the term "or" in the specification of the claims is intended to mean a "non-exclusive or".
Claims (6)
1. A cabinet feeding control method for expanded cut tobacco produced by tobacco shred manufacturing is characterized by comprising the following steps:
detecting whether expanded cut tobacco passes through the blanking device in real time, and outputting a first signal or a second signal; when detecting that expanded cut tobacco passes through the blanking device in real time, outputting the first signal, and when detecting that no expanded cut tobacco passes through the blanking device in real time, outputting the second signal;
obtaining the first signal or the second signal and judging whether the air supply condition is met; if the irregular first signal and the irregular second signal are obtained, a timer is started, tobacco shred pneumatic conveying equipment is in a starting pneumatic conveying state, and if the second signal is obtained, the timer is not started, the tobacco shred pneumatic conveying equipment is in a normal state, and tobacco shred pneumatic conveying conditions are met;
increasing an equivalent value every second according to the second signal to obtain an accumulated value;
judging whether the accumulated value is larger than a preset weight threshold value or not; if the accumulated value is smaller than the preset weight threshold value, continuously keeping increasing one equivalent value per second; and if the accumulated value is larger than the preset weight threshold value, issuing work order information according to the current MES system and sending the work order information to the storage cabinet.
2. The method for controlling feeding of expanded cut tobacco into a cabinet in tobacco shred production according to claim 1, wherein a timer is started when the irregular first signal and the irregular second signal are obtained, and the cut tobacco pneumatic conveying device is in a pneumatic conveying starting state, and the method further comprises the following steps of:
and acquiring a first output duration of a first signal monitored by a timer in real time, and if the first output duration is greater than or equal to a first duration threshold, alarming and stopping the tobacco shred feeding equipment.
3. The cabinet entering control method for the expanded cut tobacco produced by the tobacco shred manufacturing according to claim 1, wherein the work order information comprises cut tobacco batch, name of the cigarette brand and code of the cigarette brand.
4. The method for controlling the loading of the expanded cut tobacco produced by the tobacco shredding process according to claim 1, wherein after judging whether the accumulated value is greater than a preset weight threshold value, the method further comprises:
and acquiring a second output time length of the second signal monitored by the timer in real time, and judging the cut tobacco pneumatic conveying interruption or termination according to the second output time length.
5. The method according to claim 4, wherein the obtaining of the second output duration of the second signal monitored by the timer in real time and the judgment of the cut tobacco pneumatic conveying interruption or termination according to the second output duration specifically comprise:
if the second output time length is less than or equal to a second time length threshold value, judging that the tobacco shred air conveying is interrupted;
and if the second output time length is greater than a second time length threshold value, judging that the tobacco shred pneumatic conveying is finished.
6. A control system for feeding expanded cut tobacco produced by tobacco shred manufacturing into a cabinet is applied to the control method and the system for feeding the expanded cut tobacco produced by tobacco shred manufacturing according to any one of claims 1 to 5, and comprises the following steps:
the photoelectric tube is used for detecting whether expanded cut tobacco passes through the blanking device in real time and outputting a first signal or a second signal;
the obtaining module is used for obtaining the first signal or the second signal and judging whether the air supply condition is met;
the accumulation module is used for increasing an equivalent value every second according to the second signal to obtain an accumulated value;
and the judging module is used for judging whether the accumulated value is greater than a preset weight threshold value.
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| CN202111317992.7A CN113928869B (en) | 2021-11-09 | 2021-11-09 | Method and system for controlling feeding of expanded cut tobacco produced by tobacco shred manufacturing |
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| JPS48880Y1 (en) * | 1967-12-02 | 1973-01-10 | ||
| GB1495752A (en) * | 1974-03-12 | 1977-12-21 | Amf Inc | Continuous measurement of the bulk density of particulate material such as cut tobacco |
| CN100434002C (en) * | 2005-07-09 | 2008-11-19 | 胡海洋 | Method for measuring cut tobacco in air pipeline for cigarette machine and cut tobacco metering control instrument |
| CN1823636A (en) * | 2006-03-31 | 2006-08-30 | 将军烟草集团有限公司 | Metering and displaying method of tobacco mixed shred in tobacco shred storage cabinet |
| CN201506635U (en) * | 2009-08-14 | 2010-06-16 | 河南中烟工业有限责任公司 | Anti-blocking device for wind power transmission system |
| CN102445261A (en) * | 2011-09-29 | 2012-05-09 | 河南中烟工业有限责任公司 | Virtual metering method for accurate material cabinet feeding |
| CN103169149B (en) * | 2011-12-20 | 2016-04-20 | 上海烟草集团有限责任公司 | A kind of cut tobacco air classifier and selection by winnowing control method |
| CN203692524U (en) * | 2014-01-17 | 2014-07-09 | 江苏中烟工业有限责任公司 | Device for automatically removing fault of cut tobacco blocking of discharge opening of cut tobacco feeder |
| CN203959357U (en) * | 2014-05-22 | 2014-11-26 | 江苏中烟工业有限责任公司 | The blockage-prevention alarm device of storage cabinet feed system |
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| CN106418676B (en) * | 2016-11-21 | 2018-09-25 | 龙岩烟草工业有限责任公司 | The method for control speed of wire feeder motor for feeding, device and system |
| CN108636949B (en) * | 2018-04-10 | 2021-02-02 | 红云红河烟草(集团)有限责任公司 | Automatic dredging method and system for pipe blockage detection of wind power feeding system |
| CN110482247A (en) * | 2019-08-08 | 2019-11-22 | 河南中烟工业有限责任公司 | Tobacco leaf mass flow stabilising arrangement, material conveyor and mass flow detection method |
| CN112498999A (en) * | 2020-12-15 | 2021-03-16 | 华东理工大学 | Powder blanking device and method based on pulse ventilation |
| CN113317553B (en) * | 2021-05-31 | 2022-09-23 | 浙江中烟工业有限责任公司 | SACU tobacco shred air delivery controller online monitoring and diagnosing system |
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