CN105067560A - Automatic comparison type tobacco leaf moisture measurement channel adjustment method - Google Patents
Automatic comparison type tobacco leaf moisture measurement channel adjustment method Download PDFInfo
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- CN105067560A CN105067560A CN201510446601.XA CN201510446601A CN105067560A CN 105067560 A CN105067560 A CN 105067560A CN 201510446601 A CN201510446601 A CN 201510446601A CN 105067560 A CN105067560 A CN 105067560A
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Abstract
The present invention relates to an automatic comparison type tobacco leaf moisture measurement channel adjustment method, which comprises that: a plurality of online near infrared moisture measurement channels are arranged at the outlet of a leaf beating re-baking machine, the original moisture signal of tobacco leaf is real-timely acquired, the tobacco leaf having the same production place and the same grade can make the online moisture instrument measure out different values by adjusting the channels, the online moisture instrument is arranged in that each 0.2 is a channel, and when the one channel is adjusted, the value is changed by adopting 0.2 as the unit on the basis of the original data. According to the present invention, the parameters of the online near infrared moisture instrument are real-timely adjusted to minimize the error of the online prediction, such that the upgrading and the maintenance are convenient, the delay time of more than 20 min due to the manual adjustment on the moisture instrument error in the prior art is eliminated, the interface is remained for the use of the intelligent spc control technology, and the delaying time of the closed-loop system is eliminated.
Description
Technical field
The present invention relates to beating and double roasting process technical field, particularly relate to a kind of automatic contrast moisture content in leaves Measurement channel control method.
Background technology
Moisture controls there is very important status in the former cigarette processing of tobacco leaf rebaking factory, the moisture data of accurate measurement and control tobacco bale, great meaning is had to the quality of production promoting tobacco bale, in the automated production flow process of redrying factory, how carrying out the moisture data of accurate Measurement & Control tobacco bale, is not but a nothing the matter.
In the environmental factor of Redrying Factory online production, such as temperature, the factor of production, the production of different brackets flue-cured tobacco and the oneself factor of instrument make the data of Moisture Meter on-line checkingi and actual moisture be have certain deviation, bring certain misleading to online technique personnel control closed-loop system, and the process that test in laboratory goes out moisture also has the time delay of more than 20 minute, adjustment and control that the deviation of On-line near infrared analyzer Moisture Meter is certain can not be given timely, therefore we just think and regulate the various parameters of online Moisture Meter to reach the object of the excellent control of moisture according to the Real-Time Monitoring of moisture, bring a rising of quality to enterprise, but we are faced with such factor, the instability of flow of sheet cigarette, laboratory data result hysteresis quality out, and detect from Moisture Meter the one_to_one corresponding that laboratory samples, and also have the division dividing the route of three directions to casing from belt pulley, and the interval disparity of sample time, these factors are that our experiment on the spot brings very large difficulty, once we considered that all moisture in a period of time averaged and to make comparisons with the data in laboratory a period of time, afterwards through the proof of theory of probability normal distribution, and continuous several days to scene observation on the spot and experiment, we have negated this way, the moisture data of accurately real-time measurement tobacco bale, in the technological process of production of current Redrying Factory, remain one technical barrier.
Summary of the invention
In order to solve above-mentioned technical barrier, the invention provides a kind of automatic contrast moisture content in leaves Measurement channel control method, in this method, be provided with some moisture measurement passages, the moisture data that the moisture content in leaves value recorded by assay laboratory and online Moisture Meter are recorded in real time, and then draw the online function value of moisture content in leaves, then the moisture content in leaves value that records of comparative experiments room and online function value, regulate the Measurement channel of online Moisture Meter with the deviation between these two data, reach the object accurately measuring moisture content in leaves data.
To achieve these goals, the present invention is by the following technical solutions:
A kind of automatic contrast moisture content in leaves Measurement channel control method, the method comprises the steps:
1) bake machine exit at beating and double roasting and several On-line near infrared analyzer Moisture Meter Measurement channel are set, the initial condition sub-signal of Real-time Collection tobacco leaf, the tobacco leaf of the same place of production and grade can make online Moisture Meter measure different values by adjustment passage, On-line near infrared analyzer Moisture Meter is 0.2 1 passages, often adjust a passage, numerical value changes on the basis of raw data in units of 0.2;
2) the time t packed to sheet cigarette from roasting machine outlet On-line near infrared analyzer Moisture Meter is calculated
1, and the time point of documentary film cigarette packing sampling, vanning time, sample interval, and the moisture value that lab oven is worked it out;
3) data that a tobacco bale laboratory records are obtained automatically, according to the sample time of its record, the time t of Tobacco slice packing
2, the time t that vanning terminates
3, and release the On-line near infrared analyzer of roasting machine outlet relative to this sheet cigarette sample according to the principle that flow is retrodicted, the initial and end time of this detection is t
2-t
1, t
3-t
1, On-line near infrared analyzer Moisture Meter collection point number scale is during this period k;
4) with
for chronomere, be mapped to the end time initial for corresponding for sheet cigarette sample on-line checkingi
two collection point k on, w is
the real-time point value of moment collection moisture, is denoted as Φ this point set;
5) the continuous combination W of all collection points in units of k on in-line infrared water-measuring meter Φ is calculated
1:K,
w
k+1:2k, this k+1 kind is combined the disturbance moisture formed and is denoted as set omega.
6) the minor increment S of set of computations Ω and single-point laboratory sheet cigarette data:
7) system deviation of Continuous plus 10 points, computing formula is
As further improvement, described On-line near infrared analyzer Moisture Meter initial channel is set to 8 passages.
As further improvement, occur that 8 points are when raw material disturbance and time disturbance, 8 points are greater than 0.2, the Measurement channel of the On-line near infrared analyzer Moisture Meter then adjusted, the channel number of adjustment is K=max (k), wherein k*0.2≤Θ < (k+1) * 0.2.
The present invention makes minimum being convenient to of the error of on-line prediction upgrade, safeguard by the parameter of real-time adjustment On-line near infrared analyzer Moisture Meter, the time delay of more than 20 minute that before eliminating, artificial adjustment Moisture Meter error process is brought, give and use intelligent spc control technology to leave interface, eliminate the time delay of closed-loop system self.
Accompanying drawing explanation
Fig. 1 is experiment effect figure of the present invention;
Fig. 2 is system chart of the present invention.
Embodiment
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is made a detailed explanation.
The automatic contrast moisture content in leaves Measurement channel control method of one as described in Figure 1, the method comprises the steps:
1) bake machine exit at beating and double roasting and 8 On-line near infrared analyzer Moisture Meter Measurement channel are set, the initial condition sub-signal of Real-time Collection tobacco leaf, the tobacco leaf of the same place of production and grade can make online Moisture Meter measure different values by adjustment passage, On-line near infrared analyzer Moisture Meter is 0.2 1 passages, often adjust a passage, numerical value changes on the basis of raw data in units of 0.2;
2) the time t packed to sheet cigarette from roasting machine outlet On-line near infrared analyzer Moisture Meter is calculated
1, and the time point of documentary film cigarette packing sampling, vanning time, sample interval, and the moisture value that lab oven is worked it out;
3) data that a tobacco bale laboratory records are obtained automatically, according to the sample time of its record, the time t of Tobacco slice packing
2, the time t that vanning terminates
3, and release the On-line near infrared analyzer of roasting machine outlet relative to this sheet cigarette sample according to the principle that flow is retrodicted, the initial and end time of this detection is t
2-t
1, t
3-t
1, On-line near infrared analyzer Moisture Meter collection point number scale is during this period k;
4) with
for chronomere, be mapped to the end time initial for corresponding for sheet cigarette sample on-line checkingi
two collection point k on, w is
the real-time point value of moment collection moisture, is denoted as Φ this point set;
5) the continuous combination W of all collection points in units of K on in-line infrared water-measuring meter Φ is calculated
1:k,
w
k+1:2k, this k+1 kind is combined the disturbance moisture formed and is denoted as set omega.
6) the minor increment S of set of computations Ω and single-point laboratory sheet cigarette data:
7) system deviation of Continuous plus 10 points, computing formula is
Occur that 8 points are when raw material disturbance and time disturbance, 8 points are greater than 0.2, the Measurement channel of the On-line near infrared analyzer Moisture Meter then adjusted, the channel number of adjustment is K=max (k), wherein k*0.2≤Θ < (k+1) * 0.2.
Laboratory is detected moisture content in leaves, and we are designated as Ω the theorem in Euclid space that the moisture data of test in laboratory form
1.Online Moisture Meter detects data in every 5 seconds, and the theorem in Euclid space of these data composition is designated as Ω
2.The frequency of test in laboratory moisture content in leaves is indefinite, determine with need of production, have plenty of every three casees and just detect a case, also have plenty of every two casees and just detect a case, here a case is detected for every three casees, for the tobacco bale moisture data s of any two adjacent test in laboratory
1, s
2, might as well S be designated as
1at S
2detect before, represent the time with t, so
wherein Δ t just for we calculate each case vanning time be how many, we
be designated as S
2the counting of Moisture Meter on-line real-time measuremen, therefore
so we know S according to convention
2the moment point of online Moisture Meter collection pushes away forward
individual point should be just S
2a little, therefore we average to these data should be just the S of the on-line checkingi corresponding with laboratory in the institute of the water content detection of this case
2the on-line checkingi value of this case; Further, we calculate S now
2the real-time online moisture data that this case should detect, but we consider the undulatory property of flow again, and the problem of belt pulley shunting.
Claims (3)
1. an automatic contrast moisture content in leaves Measurement channel control method, it is characterized in that, the method comprises the steps:
1) bake machine exit at beating and double roasting and several On-line near infrared analyzer Moisture Meter Measurement channel are set, the initial condition sub-signal of Real-time Collection tobacco leaf, the tobacco leaf of the same place of production and grade can make online Moisture Meter measure different values by adjustment passage, On-line near infrared analyzer Moisture Meter is 0.2 1 passages, often adjust a passage, numerical value changes on the basis of raw data in units of 0.2;
2) the time t packed to sheet cigarette from roasting machine outlet On-line near infrared analyzer Moisture Meter is calculated
1, and the time point of documentary film cigarette packing sampling, vanning time, sample interval, and the moisture value that lab oven is worked it out;
3) data that a tobacco bale laboratory records are obtained automatically, according to the sample time of its record, the time t of Tobacco slice packing
2, the time t that vanning terminates
3, and release the On-line near infrared analyzer of roasting machine outlet relative to this sheet cigarette sample according to the principle that flow is retrodicted, the initial and end time of this detection is t
2-t
1, t
3-t
1, On-line near infrared analyzer Moisture Meter collection point number scale is during this period k;
4) with
for chronomere, be mapped to the end time initial for corresponding for sheet cigarette sample on-line checkingi
Two collection point k on, w is
The real-time point value of moment collection moisture, is denoted as Φ this point set;
5) the continuous combination of all collection points in units of k on in-line infrared water-measuring meter Φ is calculated
this k+1 kind is combined the disturbance moisture formed and is denoted as set omega.
6) the minor increment S of set of computations Ω and single-point laboratory sheet cigarette data:
What Φ characterized is that moisture is detected in sheet cigarette sampling experiment room and On-line near infrared analyzer detects moisture a raw material disturbance, with the minor increment in time disturbance;
7) system deviation of Continuous plus 10 points, computing formula is
2. the automatic contrast moisture content in leaves Measurement channel control method of one according to claim 1, is characterized in that: described On-line near infrared analyzer Moisture Meter initial channel is set to 8 passages.
3. the automatic contrast moisture content in leaves Measurement channel control method of one according to claim 2, it is characterized in that: occur that 8 points are when raw material disturbance and time disturbance, 8 points are greater than 0.2, the Measurement channel of the On-line near infrared analyzer Moisture Meter then adjusted, the channel number of adjustment is K=max (k), wherein k*0.2≤Θ < (k+1) * 0.2.
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CN107788567A (en) * | 2016-08-30 | 2018-03-13 | 上海创和亿电子科技发展有限公司 | Redrying machine, moisture control the acquisition methods and system of period of waves |
CN115349657A (en) * | 2022-08-28 | 2022-11-18 | 红云红河烟草(集团)有限责任公司 | System and method for early warning abnormity of online moisture meter in key process of wire making |
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CN115349657A (en) * | 2022-08-28 | 2022-11-18 | 红云红河烟草(集团)有限责任公司 | System and method for early warning abnormity of online moisture meter in key process of wire making |
CN115349657B (en) * | 2022-08-28 | 2023-10-24 | 红云红河烟草(集团)有限责任公司 | Abnormality early warning system and method for online moisture meter of wire making key process |
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