CN102885392B - A kind of technology for making tobacco threds Quality Monitoring Control System and method - Google Patents
A kind of technology for making tobacco threds Quality Monitoring Control System and method Download PDFInfo
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Abstract
The present invention relates to a kind of technology for making tobacco threds Quality Monitoring Control System and method, comprise index and formulate unit, data acquisition unit, data analysis unit and result identifying unit, achieve and control on the basis of data system in throwing, modeling analysis is carried out to the data collected, met most the index of current pipe tobacco requirement, equipment processing ability, machine direction, and SPC tracking judgement is carried out to index.Technique scheme effectively prevent technology for making tobacco threds parameter in prior art can not the technical problem of objective reaction actual production situation, is a kind of can monitoring fiber tow production process and the technology for making tobacco threds quality control method of automatic analysis and system.
Description
Technical field
The present invention relates to a kind of Quality Monitoring Control System and method, specifically a kind of cigar mill technology for making tobacco threds Quality Monitoring Control System and method, belong to technical field.
Background technology
At cigarette industry, Primary Processing is most important, and what pay close attention to most in Primary Processing is the stability and the controllability that ensure the quality of production, and in whole production process, there is the parameter affecting tobacco quality in a large number, as environment temperature, air moisture content, atmospheric pressure etc.At home, although there is cigarette industry standard, due to the difference of various places environment, quality of tobacco, capacity of equipment, processing method, there is different controling parameters in each enterprise in its fiber tow production process.How according to a large amount of controling parameters, more efficiently, accurately, easily controlling throwing quality, is the major issue that domestic all enterprises face.In actual production process, a large amount of enterprise technologist due to the data volume of Water demand too many, cause attending to one thing and lose sight of another.During fiber tow production, controlled Primary Processing by middle control data system, this system, on the basis that PLC controls automatically, automatically collects plc data and points out, and transfers data in PLC control system simultaneously.Technique person needs to carry out walkaround inspection to the data in throwing flow process, export in each production process, pay close attention to craft quality standard, but cannot judge for the supplied materials state of reality, due in production procedure, data volume is huge, and technique person cannot accomplish to analyze often criticizing product, more cannot accomplish to carry out horizontal and vertical analysis to each index.
In order to solve Primary Processing complicated difficult with the problem controlled and analyze; disclose a kind of method improving parameter control effect in silk making technology in Chinese patent literature CN102090703A, comprising: the steady state data and the unstable state data that gather the technological parameter in silk producing procedures; The Measure of Process Capability of technological parameter is calculated according to the steady state data of technological parameter; Respectively the Measure of Process Capability of technological parameter and unstable state data are changed, obtain the process capability evaluation value of technological parameter steady state data and unstable state data; Judge whether the steady state data of technological parameter and the process capability evaluation value of unstable state data reach each self-corresponding predetermined threshold value respectively, if wherein there is the process capability evaluation value not reaching predetermined threshold value, then adjustment operation is performed to this technological parameter.By the calculating to steady-state process and process capability evaluation value corresponding to the technological parameter in unstable state stage in this technical scheme, comprehensive quality condition investigating technological parameter, for follow-up parameter optimization provides foundation more realistic more comprehensively, the control effects after optimization can be improved.But, this technical scheme takes the division of steady state data and unstable state data to carry out the technological parameter in Primary Processing, to the division of steady state data and unstable state data, there is certain subjectivity herein, some data is stable state under certain conditions, be unstable state under certain state, therefore the method objectively can not reflect the actual state in Primary Processing, can not well instruct throwing production process.
Summary of the invention
Technical problem to be solved by this invention is that in prior art, technology for making tobacco threds parameter control method objectively can not reflect actual production situation, can not well instruct throwing production process, thus provides a kind of and can monitor fiber tow production process and the technology for making tobacco threds quality control method of automatic analysis and system.
For solving the problems of the technologies described above, the present invention is achieved by the following technical solutions: a kind of technology for making tobacco threds quality control method, comprises the steps:
(1) control historical data in data system in analyzing, obtain the index affecting technology for making tobacco threds quality, formulate the mark post value of each index, this index S PC(statistical Process Control is set) upper and lower bound that controls;
(2) setting follow the tracks of produce batch, in Primary Processing, therefrom control in data system the described desired value gathering described batch products;
(3) the described desired value collected is analyzed, compare with the mark post value of this index obtained in described step (1), when the described desired value collected exceeds the upper limit or in limited time lower of the SPC control of described index, carry out alarm indication;
(4) after this silk producing procedures completes, carry out SPC judgement, form SPC result of determination.
Technology for making tobacco threds quality control method of the present invention, also comprises step (5), after this batch of production completes, evaluates this batch, and carry out quantification treatment to this batch of quality.
Technology for making tobacco threds quality control method of the present invention, in described step (1), when the historical data of centering control data system is analyzed, add up the historical data of nearly 2 years, each batch of all qualified rate is added up, average level reach 99% be set to long-term smooth index, average level reach between 70%-99% for pay close attention to index, average level is less than 70% be set to and pay close attention to index, described concern index is the index affecting technology for making tobacco threds quality with paying close attention to index, and the mark post value of described index is the mean value of historical data.
Technology for making tobacco threds quality control method of the present invention, in described step (1), weight coefficient calculating is carried out on the described index affecting technology for making tobacco threds quality, the percentage of optimal value A2 shared by the difference of the mean value A1 that described weight coefficient Q is this index and this index optimal value A2.
3 of history normal data times of standard deviations, in described step (1), when arranging the upper and lower bound of described index S PC control, are set to bound by technology for making tobacco threds quality control method of the present invention.
Technology for making tobacco threds quality control method of the present invention, in described step (5), this batch is evaluated, and when quantification treatment is carried out to this batch of quality, the method adopted is as follows: according to the index obtained in step (1), if the mark post value of its index is x, currency is y, then current criteria score z is (1-|y-x|/x) * 100, then the higher explanation quality of score is better; Overall scores calculates by weight coefficient Q (n) of each index in step 1, then total score is M=∑ z*Q (n), n is each index.
A kind of technology for making tobacco threds Quality Monitoring Control System, comprising:
Index formulates unit: control the historical data in data system in analysis, obtains the index affecting technology for making tobacco threds quality, formulates the mark post value of each index, arranges the upper and lower bound that this index S PC controls;
Data acquisition unit, setting follow the tracks of produce batch, in Primary Processing, therefrom control in data system the described desired value gathering described batch products;
Data analysis unit, analyzes the described desired value collected, and compares with the mark post value of this index obtained in described step (1), when the described desired value collected exceeds the upper limit or in limited time lower of the SPC control of described index, carries out alarm indication;
Result identifying unit, after silk producing procedures completes, carries out SPC judgement, forms SPC result of determination.
Technology for making tobacco threds Quality Monitoring Control System of the present invention, also comprises evaluation unit, after this batch of production completes, evaluates this batch, carries out quantification treatment to this batch of quality.
Technique scheme of the present invention has the following advantages compared to existing technology:
(1) technology for making tobacco threds Quality Monitoring Control System of the present invention and method, control in throwing on the basis of data system, setting target formulates unit, data acquisition unit, data analysis unit and result identifying unit, modeling analysis is carried out to the data collected, met most current pipe tobacco requirement, equipment processing ability, the index of machine direction, and SPC tracking judgement is carried out to index, like this, just can determine to monitor and automatic analysis production process, the influence degree of bad parameter to pipe tobacco by the gross can also be predicted, and then can take measures in advance, index adjustment is carried out to lower road manufacturing procedure, thus ensure tobacco quality by the gross, can also judge according to SPC, the practical capacity of estimating apparatus, before equipment practical capacity is not up to standard, carry out improving or overhauling, ensure that capacity of equipment is sufficient.Technique scheme effectively prevent technology for making tobacco threds parameter in prior art can not the technical problem of objective reaction actual production situation, is a kind of can monitoring fiber tow production process and the technology for making tobacco threds quality control method of automatic analysis and system.
(2) technology for making tobacco threds Quality Monitoring Control System of the present invention and method, decrease hand labor intensity, improve the operability of PMS, method is by quantifying evaluated, facilitating homogenizes produces analysis, better can ensure the quality of product.
(3) technology for making tobacco threds Quality Monitoring Control System of the present invention and method, introduce the historical data of central control system and analyze, weed out a large amount of parameter irrelevant with batch quality, reduce technologist to propose the subjectivity of data, reduce the amount of labour of staff, thus obtain the index affecting technology for making tobacco threds quality, better can characterize the quality of this technology for making tobacco threds.
(4) technology for making tobacco threds Quality Monitoring Control System of the present invention and method, quantize each index, carry out SPC judgement, and evaluate, and adopt mark to characterize each index, mode by quantifying obtains evaluation result intuitively.
Accompanying drawing explanation
In order to make content of the present invention be more likely to be clearly understood, below in conjunction with accompanying drawing, the present invention is further detailed explanation, wherein,
Fig. 1 is the structural representation of technology for making tobacco threds Quality Monitoring Control System of the present invention;
Fig. 2 is Primary processing shop index name schematic diagram of the present invention;
Fig. 3 is Primary processing shop index mark post setting schematic diagram;
Fig. 4 is Primary processing shop batch tracking data confirmation figure;
Fig. 5 is that Primary processing shop batch trace analysis SPC schemes;
Fig. 6 is that Primary processing shop batch follows the tracks of score browse graph.
Detailed description of the invention
Embodiment 1:
Technology for making tobacco threds Quality Monitoring Control System of the present invention, comprises
Index formulates unit: control the historical data in data system in analysis, obtains the index affecting technology for making tobacco threds quality, formulates the mark post value of each index, arranges the upper and lower bound that this index S PC controls;
Data acquisition unit, setting follow the tracks of produce batch, in Primary Processing, therefrom control in data system the described desired value gathering described batch products;
Data analysis unit, analyzes the described desired value collected, and compares with the mark post value of this index obtained in described step (1), when the described desired value collected exceeds the upper limit or in limited time lower of the SPC control of described index, carries out alarm indication;
Result identifying unit, after silk producing procedures completes, carries out SPC judgement, forms SPC result of determination.
A kind of technology for making tobacco threds quality control method of the present invention, comprises the steps:
(1) control the historical data in data system in analyzing, obtain the index affecting technology for making tobacco threds quality, formulate the mark post value of each index, the upper and lower bound that this index S PC controls is set;
(2) setting follow the tracks of produce batch, in Primary Processing, therefrom control in data system the described desired value gathering described batch products;
(3) the described desired value collected is analyzed, compare with the mark post value of this index obtained in described step (1), when the described desired value collected exceeds the upper limit or in limited time lower of the SPC control of described index, carry out alarm indication;
(4) after this silk producing procedures completes, carry out SPC judgement, form SPC result of determination.
Embodiment 2:
On the basis of the technology for making tobacco threds Quality Monitoring Control System described in embodiment 1, also comprise evaluation unit, after this batch of production completes, this batch is evaluated, quantification treatment is carried out to this batch of quality.
A kind of technology for making tobacco threds quality control method described in the present embodiment, comprises the steps:
(1) control the historical data of nearly 2 years in data system in analyzing, obtain the index affecting technology for making tobacco threds quality, as shown in Figure 2.Meanwhile, by Preliminary screening, weed out a large amount of parameter irrelevant with batch quality, reduce technologist and propose the subjectivity of data, reduce the amount of labour of staff.Then according to the index affecting technology for making tobacco threds quality obtained, formulate the mark post value of each index, the upper and lower bound that this index S PC controls is set, as shown in Figure 3.
In this step, by each batch of all qualified rates statistics, average level has reached 99%, be then defined as long-term smooth index; Average level reaches 70% and is defined as concern index; Be less than 70% be defined as and pay close attention to index.Because " long-term smooth index " is stablized, and not the leading indicator affecting current Quality, so rejected.And " concern index " and " paying close attention to index " are the main cruxs affecting current Quality, therefore these indexs are divided into the index affecting technology for making tobacco threds quality.So carried out daily tracking, its mark post value is the mean value of historical data.The percentage of optimal value shared by the difference of the mean value A1 that its weight coefficient Q is this index and this index optimal value A2.Described optimal value is herein the standard value of corresponding index, and for the index of qualification rate equal percentage form, its optimal value is 100%, and for the index such as temperature, time, its optimal value is the standard value of this index, and described standard value pre-sets according to professional standard.
The computing formula of described weight coefficient Q is: Q=|A2-A1|/A2*100%, and this formula illustrates that the difference of A2 and A1 is less, and illustrate that this index is less to quality influence, then Q is less.
In this step, SPC being judged to the calculating of line, is bound by 3 times of standard deviations of history normal data.
(2) setting follow the tracks of produce batch, in Primary Processing, therefrom control in data system the described desired value gathering described batch products;
(3) the described desired value collected is analyzed, compare with the mark post value of this index obtained in described step (1), when the described desired value collected exceeds the upper limit or in limited time lower of the SPC control of described index, be then labeled as redness and point out.As shown in Figure 4.
In this step, according to the mark post value obtained in step (1) and bound, if go out boundary, then redden and point out, and mandatory requirement related personnel describes the condition of production at that time.
(4) after this silk producing procedures completes, carry out SPC judgement, form SPC result of determination, as shown in Figure 5.
In this step, SPC judgment basis is [GB/T4091-2001idt.ISO8258:1991], and [GB/T4091-2001idt.ISO8258:1991] is herein national standard.
(5) after this batch of production completes, this batch is evaluated, quantification treatment is carried out to this batch of quality, as shown in Figure 6.
In this step, for the index obtained in step (1), if its index mark post value is x, currency is defined as y, and (1-|y-x|/x) * 100 is defined as current criteria score z, then the higher explanation quality of score is better.During calculated population score, calculate by weight coefficient Q (n) of index n described in step 1 again, then total score M=∑ z*Q (n), n is each index, the weight system that Q (n) is index n, described index n is each index affecting technology for making tobacco threds quality in described step (1).
Obviously, above-described embodiment is only for clearly example being described, and the restriction not to embodiment.For those of ordinary skill in the field, can also make other changes in different forms on the basis of the above description.Here exhaustive without the need to also giving all embodiments.And thus the apparent change of extending out or variation be still among the protection domain of the invention.
Claims (7)
1. a technology for making tobacco threds quality control method, is characterized in that, comprises the steps:
(1) control the historical data in data system in analyzing, obtain the index affecting technology for making tobacco threds quality, formulate the mark post value of each index, the upper and lower bound that this index S PC controls is set;
Wherein, when the historical data of centering control data system is analyzed, add up the historical data of nearly 2 years, each batch of all qualified rate is added up, average level reach 99% be set to long-term smooth index, average level reach between 70%-99% for paying close attention to index, average level is less than 70% be set to and pay close attention to index, described concern index and to pay close attention to index be the described index affecting technology for making tobacco threds quality; The mark post value of described index is the mean value of historical data;
(2) setting follow the tracks of produce batch, in Primary Processing, therefrom control in data system the described desired value gathering described batch products;
(3) the described desired value collected is analyzed, compare with the mark post value of this index obtained in described step (1), when the described desired value collected exceeds the upper limit or in limited time lower of the SPC control of described index, carry out alarm indication;
(4) after this silk producing procedures completes, carry out SPC judgement, form SPC result of determination.
2. technology for making tobacco threds quality control method according to claim 1, is characterized in that, also comprises step (5), after this batch of production completes, evaluates this batch, and carry out quantification treatment to this batch of quality.
3. technology for making tobacco threds quality control method according to claim 2, it is characterized in that, in described step (1), weight coefficient calculating is carried out on the described index affecting technology for making tobacco threds quality, the percentage of optimal value A2 shared by the difference of the mean value A1 that described weight coefficient Q is this index and this index optimal value A2.
4. the technology for making tobacco threds quality control method according to claim 1 or 2 or 3, is characterized in that, in described step (1), when arranging the upper and lower bound of described index S PC control, 3 of history normal data times of standard deviations is set to bound.
5. technology for making tobacco threds quality control method according to claim 3, it is characterized in that, in described step (5), this batch is evaluated, and when carrying out quantification treatment to this batch of quality, the method for employing is as follows: according to the index obtained in step (1), if the mark post value of its index is x, currency is y, then current criteria score z is (1-|y-x|/x) * 100, then the higher explanation quality of score is better; Overall scores calculates by weight coefficient Q (n) of each index in step 1, then total score is M=∑ z*Q (n), n is each index.
6. a technology for making tobacco threds Quality Monitoring Control System, is characterized in that, comprising:
Index formulates unit: control the historical data in data system in analysis, obtains the index affecting technology for making tobacco threds quality, formulates the mark post value of each index, arranges the upper and lower bound that this index S PC controls; Wherein, when the historical data of centering control data system is analyzed, add up the historical data of nearly 2 years, each batch of all qualified rate is added up, average level reach 99% be set to long-term smooth index, average level reach between 70%-99% for paying close attention to index, average level is less than 70% be set to and pay close attention to index, described concern index and to pay close attention to index be the described index affecting technology for making tobacco threds quality; The mark post value of described index is the mean value of historical data;
Data acquisition unit, setting follow the tracks of produce batch, in Primary Processing, therefrom control in data system the described desired value gathering described batch products;
Data analysis unit, analyzes the described desired value collected, and the mark post value formulating this index that unit step obtains with index compares, and when the described desired value collected exceeds the upper limit or in limited time lower of the SPC control of described index, carries out alarm indication;
Result identifying unit, after silk producing procedures completes, carries out SPC judgement, forms SPC result of determination.
7. technology for making tobacco threds Quality Monitoring Control System according to claim 6, is characterized in that: also comprise evaluation unit, after this batch of production completes, evaluates this batch, carries out quantification treatment to this batch of quality.
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