CN101526454B - Cut tobacco elasticity on-line detection device and method thereof - Google Patents
Cut tobacco elasticity on-line detection device and method thereof Download PDFInfo
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- CN101526454B CN101526454B CN2009100798311A CN200910079831A CN101526454B CN 101526454 B CN101526454 B CN 101526454B CN 2009100798311 A CN2009100798311 A CN 2009100798311A CN 200910079831 A CN200910079831 A CN 200910079831A CN 101526454 B CN101526454 B CN 101526454B
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Abstract
The invention discloses a cut tobacco elasticity on-line detection device and a method thereof. The on-line detection device comprises an installation bracket, at least two cut tobacco thickness-measuring devices, a conveyer belt and a data acquisition and processing system. The cut tobacco thickness-measuring devices comprise a first cut tobacco thickness-measuring device and a second cut tobacco thickness-measuring device arranged above the conveyer belt. The first cut tobacco thickness-measuring device and the second cut tobacco thickness-measuring device are sequentially arranged at the installation bracket with a set interval along the moving direction of the conveyer belt. The central lines of the first cut tobacco thickness-measuring device and the second cut tobacco thickness-measuring device are consistent with the moving direction of the conveyer belt and are parallel with each other. The data acquisition and processing system is connected with the first cut tobacco thickness-measuring device and the second cut tobacco thickness-measuring device and is used for acquiring a first signal and a second signal which are obtained by measuring the thickness of cut tobacco respectively by the first cut tobacco thickness-measuring device and the second cut tobacco thickness-measuring device when the cut tobacco is conveyed on the conveyer belt, and the data acquisition and processing system is also used for obtaining the elasticity value of the cut tobacco according to the first signal and the second signal. The invention can realize on-line detection of the elasticity of the cut tobacco.
Description
Technical field
The present invention relates to the processing checkout equipment that grows tobacco, particularly relate to a kind of on-line measuring device that tobacco elasticity is measured in the pipe tobacco production run and method thereof.
Background technology
Tobacco elasticity is meant pipe tobacco applied certain pressure, within a certain period of time recovery capability behind the release of pressure.Tobacco elasticity is one of key factor that influences cigarette quality, and when tobacco elasticity was big, it was few to roll the used pipe tobacco amount of cigarette, good permeability during cigarette combustion; Tar in the flue gas, the content of nicotine and carbon monoxide are also few, and mouthfeel is good; When tobacco elasticity hour, it is many to roll the used pipe tobacco amount of cigarette, and gas penetration potential is bad during cigarette combustion; Tar in the flue gas, nicotine and carbon monoxide content are many, and mouthfeel is poor.Therefore can measure the elasticity of pipe tobacco in producing the pipe tobacco process timely, and in time it controlled, reach and stablize tobacco elasticity fluctuation range, raising tobacco elasticity value, this is significant to the quality that improves cigarette.
Each cigar mill of present China, the most grab sample off-line static measurement methods that adopt of tobacco elasticity, the step that this method is general is: at first be specimen preparation, each 70g that takes out gets 5 times from sample; Secondly, detecting instrument, the tobacco elasticity analyzer of being selected for use: sampling receptacle internal diameter 95mm, height 240mm, gauge head pressure is 7.4kg, the speed of exerting pressure (30 ± 3) mm/s, the time 7s that exerts pressure, interval time 10s; Electronic balance, 1/100g; Once more, the running program of obtaining tobacco elasticity is: the 70g sample of obtaining is put into sampling receptacle, apply the pressure of 7.4kg, the time 7s that exerts pressure writes down its height of specimen, and release of pressure 10s writes down its pipe tobacco height, and computing formula is following:
In the formula:
R-tobacco elasticity (%);
H
1-height of specimen when exerting pressure 7s (mm);
H
2Height of specimen behind the-release of pressure 10s (mm).
The samples using said method is measured 5 times, obtained 5 tobacco elasticity values, the mean value that calculates 5 times is as last tobacco elasticity value.
Above-mentioned grab sample off-line static measurement method far can not reflect pipe tobacco tobacco elasticity value and situation of change thereof in whole process of production timely and accurately, can not satisfy the production needs, and tobacco elasticity on-line detection device still belongs to blank at present.
Summary of the invention
Technical matters to be solved by this invention is to provide a kind of tobacco elasticity on-line detection device and method thereof, is used for the elasticity of pipe tobacco is realized online detection.
To achieve these goals, the invention provides a kind of tobacco elasticity on-line detection device, it is characterized in that, comprise mounting bracket, at least two pipe tobacco measuring thickness devices, conveying belt, data acquisition processing system;
Said pipe tobacco measuring thickness device comprises the first pipe tobacco measuring thickness device, the second pipe tobacco measuring thickness device that is positioned at said conveying belt top; The said first pipe tobacco measuring thickness device, the said second pipe tobacco measuring thickness device are set in turn on the said mounting bracket with the spacing of setting along the direction of motion of said conveying belt, and the center line of the said first pipe tobacco measuring thickness device, the said second pipe tobacco measuring thickness device is consistent with the direction of motion of said conveying belt and be parallel to each other;
Said data acquisition processing system; Connect the said first pipe tobacco measuring thickness device, the said second pipe tobacco measuring thickness device; Be used for when pipe tobacco is carried on said conveying belt; Gather first signal, secondary signal that thickness that the said first pipe tobacco measuring thickness device, the said second pipe tobacco measuring thickness device measure said pipe tobacco respectively obtains, and obtain the elasticity number of said pipe tobacco according to said first signal, said secondary signal.
Described tobacco elasticity on-line detection device, wherein, said data acquisition processing system comprises again:
Pipe tobacco thickness coefficient amending unit is used for the pipe tobacco thickness coefficient is revised, and obtains pipe tobacco thickness measuring correction factor;
The first tobacco elasticity processing unit connects said pipe tobacco thickness coefficient amending unit, is used for according to the following said elasticity number of tobacco elasticity calculated with mathematical model;
R=K
1 repaiies(H
1) * (H
2-H
1)/H
1* 100%
In the formula: R is the elasticity number (%) of pipe tobacco;
H
1Be first signal, the pipe tobacco thickness (mm) that the first pipe tobacco measuring thickness device is measured;
H
2Be secondary signal, the pipe tobacco thickness (mm) that the second pipe tobacco measuring thickness device is measured;
K
1 repaiies(H
1) be pipe tobacco thickness measuring correction factor.
Described tobacco elasticity on-line detection device, wherein, said first pipe tobacco measuring thickness device and/or the said second pipe tobacco measuring thickness device are pinch roller formula measuring thickness device, this pinch roller formula measuring thickness device comprises pinch roller, connecting rod, bolster, displacement transducer, transmitter;
Said bolster is connected with said pinch roller through said connecting rod, and said displacement transducer is connected with said bolster, and said first signal, said secondary signal are delivered to said data acquisition processing system through said transmitter.
Described tobacco elasticity on-line detection device, wherein, said displacement transducer is angular displacement sensor or linear movement pick-up.
Described tobacco elasticity on-line detection device, wherein, said on-line measuring device also comprises: pressure governor is used to regulate the pressure of said pinch roller to said pipe tobacco.
Described tobacco elasticity on-line detection device; Wherein, Said on-line measuring device also comprises: fixed material pipe; Be positioned at the said first pipe tobacco measuring thickness device, said second pipe tobacco measuring thickness device the place ahead, be installed in the pipe tobacco feeding port place of said conveying belt, be used to stablize the thickness of said pipe tobacco on said conveying belt.
Described tobacco elasticity on-line detection device; Wherein, Said on-line measuring device also comprises: the moisture in cut tobacco measuring instrument; Be installed in the place ahead of the said first pipe tobacco measuring thickness device or the rear of the said second pipe tobacco measuring thickness device, and be positioned at the center line top of the said first pipe tobacco measuring thickness device, the said second pipe tobacco measuring thickness device, be used for measuring greatly the time moisture of said pipe tobacco when the change of soil water content of said pipe tobacco.
Described tobacco elasticity on-line detection device, wherein, said data acquisition process also comprises:
The moisture in cut tobacco leveling factor unit is used for the moisture in cut tobacco coefficient is revised, and obtains the moisture in cut tobacco correction factor;
The second tobacco elasticity processing unit connects said pipe tobacco thickness amending unit, said moisture in cut tobacco leveling factor unit, is used for according to the following said elasticity number of tobacco elasticity calculated with mathematical model;
R=K
1 repaiies(H
1) * K
2 repair(H
2O) * (H
2-H
1)/H
1* 100%
In the formula, K
2 repair(H
2O) be the moisture in cut tobacco correction factor.
Described tobacco elasticity on-line detection device, wherein, said moisture in cut tobacco leveling factor unit draws different K with the known elasticity number that contains the different in moisture pipe tobacco through demarcation
2 repair(H
2O) value, thus K obtained
2 Repair(H
2O), carry out fitting a straight line with least square method again or carry out the polygometry match and try to achieve K with the change of soil water content of pipe tobacco relation
2 repair(H
2O) and first relational expression between moisture in cut tobacco, moisture value, said first relational expression measured according to said moisture in cut tobacco measuring instrument are obtained K
2 repair(H
2O).
Described tobacco elasticity on-line detection device; Wherein, Said on-line measuring device also comprises: the pipe tobacco temperature measuring set; Be installed in the place ahead of the said first pipe tobacco measuring thickness device or the rear of the said second pipe tobacco measuring thickness device, and be positioned at the center line top of the said first pipe tobacco measuring thickness device, the said second pipe tobacco measuring thickness device, be used for measuring greatly the time temperature of said pipe tobacco when the temperature variation of said pipe tobacco.
Described tobacco elasticity on-line detection device, wherein, said data acquisition process also comprises:
Pipe tobacco temperature coefficient amending unit is used for the pipe tobacco temperature coefficient is revised, and obtains the pipe tobacco temperature correction coefficient;
The 3rd tobacco elasticity processing unit connects said pipe tobacco thickness amending unit, said moisture in cut tobacco leveling factor unit, said pipe tobacco temperature coefficient amending unit, is used for according to the following said elasticity number of tobacco elasticity calculated with mathematical model;
R=K
1 repaiies(H
1) * K
2 repair(H
2O) * K
3 repair(T ℃) * (H
2-H
1)/H
1* 100%
In the formula, K
3 repair(T ℃) is the pipe tobacco temperature correction coefficient.
Described tobacco elasticity on-line detection device, wherein, said pipe tobacco temperature coefficient amending unit draws different K with the elasticity number of known different temperatures pipe tobacco through demarcation
3 repair(T ℃) value, thus K obtained
3 repairThe temperature variation relation of (T ℃) and pipe tobacco is carried out fitting a straight line with least square method again or is carried out the polygometry match and try to achieve K
3 repairSecond relational expression between (T ℃) and pipe tobacco temperature is obtained K according to said pipe tobacco temperature measuring set temperature value measured, said second relational expression
3 repair(T ℃) value.
To achieve these goals, the present invention also provides a kind of tobacco elasticity online test method, it is characterized in that, comprising:
Described tobacco elasticity online test method wherein, in the said step 3, further comprises: with the step of the elasticity number of the said pipe tobacco of following tobacco elasticity calculated with mathematical model;
R=K
1 repaiies(H
1) * (H
2-H
1)/H
1* 100%
In the formula: R is the elasticity (%) of pipe tobacco;
H
1Be first signal, the pipe tobacco thickness (mm) that the first pipe tobacco measuring thickness device is measured;
H
2Be secondary signal, the pipe tobacco thickness (mm) that the second pipe tobacco measuring thickness device is measured;
K
1 repaiies(H
1) be pipe tobacco thickness measuring correction factor.
Described tobacco elasticity online test method wherein, in the said step 3, further comprises: select the step mule that whether said pipe tobacco carried out moisture correction and/or temperature correction according to the operating mode situation of said pipe tobacco.
Described tobacco elasticity online test method; Wherein, in the said step 3, further comprise: when the change of soil water content of said pipe tobacco is big; Adopt drimeter to measure the moisture of said pipe tobacco, and with the step of the elasticity number of the said pipe tobacco of following tobacco elasticity calculated with mathematical model:
R=K
1 repaiies(H
1) * K
2 repair(H
2O) * (H
2-H
1)/H
1* 100%
In the formula, K
2 repair(H
2O) be the moisture in cut tobacco correction factor.
Described tobacco elasticity online test method, wherein, in the said step 3, the step of obtaining said moisture in cut tobacco correction factor is specially:
With the known elasticity number that contains the different in moisture pipe tobacco, draw different K through demarcation
2 repair(H
2O) value, thus K obtained
2 repair(H
2O), carry out fitting a straight line with least square method again or carry out the polygometry match and try to achieve K with the change of soil water content of pipe tobacco relation
2 repair(H
2O) and first relational expression between the moisture in cut tobacco, obtain K according to moisture value, said first relational expression measured
2 repair(H
2O).
Described tobacco elasticity online test method wherein, in the said step 3, further comprises: when the change of soil water content of said pipe tobacco is little, said pipe tobacco is not carried out the step of moisture correction, at this moment K
2 repair(H
2O)=1.
Described tobacco elasticity online test method wherein, in the said step 3, further comprises: when the temperature variation of said pipe tobacco is big, adopts temperature measuring set to measure the temperature of said pipe tobacco, and calculate the step of the elasticity number of said pipe tobacco with following formula:
R=K
1 repaiies(H
1) * K
2 repair(H
2O) * K
3 repair(T ℃) * (H
2-H
1)/H
1* 100%
In the formula, K
3 repair(T ℃) is the pipe tobacco temperature correction coefficient.
Described tobacco elasticity online test method, wherein, in the said step 3, the step of obtaining said pipe tobacco temperature correction coefficient is specially:
With the elasticity number of known different temperatures pipe tobacco, draw different K through demarcation
3 repair(T ℃) value, thus K obtained
3 repairThe temperature variation relation of (T ℃) and pipe tobacco is carried out fitting a straight line with least square method again or is carried out the polygometry match and try to achieve K
3 repairSecond relational expression between (T ℃) and pipe tobacco temperature is obtained K according to temperature value measured, said second relational expression
3 repair(T ℃) value.
Described tobacco elasticity online test method wherein, in the said step 3, further comprises: when the temperature variation of said pipe tobacco is little, said pipe tobacco is not carried out the step of temperature correction, at this moment K
3 repair(T ℃)=1.
Compared with prior art, technique effect of the present invention is:
1) on-line measurement replaces manual static to measure, and can save time, and is laborsaving.
2) on-line measurement can in time, accurate, full-range detect tobacco elasticity value size, distribution, fluctuating range, numerical value dynamic trend in the pipe tobacco production run, thereby for producing the decision maker new monitoring means is provided.
3) realization of the online detection means of tobacco elasticity can further realize the online process control of tobacco elasticity, dwindles the tobacco elasticity fluctuation range, improve the tobacco elasticity value, improves cigarette quality, practice thrift the pipe tobacco consumption, thereby brings bigger economic benefit for enterprise.
Describe the present invention below in conjunction with accompanying drawing and specific embodiment, but not as to qualification of the present invention.
Description of drawings
Fig. 1 a is a tobacco elasticity on-line detection device front view of the present invention;
Fig. 1 b is a tobacco elasticity on-line detection device vertical view of the present invention;
Fig. 2 a is a pipe tobacco measuring thickness device synoptic diagram of the present invention;
Fig. 2 b is the cellular construction synoptic diagram of data acquisition processing system;
Fig. 3 a is lever of the present invention-Weight type pressure governor front view;
Fig. 3 b is lever of the present invention-Weight type pressure governor vertical view;
Fig. 4 a has the tobacco elasticity on-line detection device front view of moisture in cut tobacco measuring instrument for the present invention;
Fig. 4 b has the tobacco elasticity on-line detection device vertical view of moisture in cut tobacco measuring instrument for the present invention;
Fig. 5 decides material pipe tobacco elasticity on-line detection device work synoptic diagram for the present invention has;
Fig. 6 a is precompressed wheel synoptic diagram of the present invention;
Fig. 6 b keeps pressure pinch roller synoptic diagram for the present invention;
Fig. 7 is K of the present invention
2 repair(H
2O) moisture correction process flow diagram;
Fig. 8 is a moisture in cut tobacco change curve synoptic diagram of the present invention;
Fig. 9 is the online testing process figure of tobacco elasticity of the present invention.
Wherein, Reference numeral:
1 mounting bracket, 2 pipe tobacco measuring thickness device A, 3 pipe tobacco measuring thickness device B
4 connecting rods, 5 pinch rollers, 6 conveying belt
7 data acquisition processing systems, 8 bolsters, 9 displacement transducers
10 transmitters, 11 weights, 12 moisture in cut tobacco measuring instruments
13 pipe tobaccos, 14 fixed material pipe 15 precompressed wheels
16 keep pressure pinch roller 100 tobacco elasticity on-line detection device
71 pipe tobacco thickness coefficient amending units, 72 moisture in cut tobacco leveling factor units
73 pipe tobacco temperature coefficient amending units, 74 first tobacco elasticity processing units
75 second tobacco elasticity processing units 76 the 3rd tobacco elasticity processing unit
Embodiment
Below in conjunction with accompanying drawing and embodiment technical scheme of the present invention is made further more detailed description.
Shown in Fig. 1 a, be tobacco elasticity on-line detection device front view of the present invention; Fig. 1 b is a tobacco elasticity on-line detection device vertical view of the present invention.
Pick-up unit of the present invention adopts two pinch rollers, and first pinch roller is exerted pressure to pipe tobacco and made pipe tobacco generation deformation, second pinch roller detect the distortion situation of pipe tobacco behind the release of pressure, can calculate the elasticity size of pipe tobacco thus.The invention provides a kind of tobacco elasticity on-line detection device 100, comprise mounting bracket 1, at least two pipe tobacco measuring thickness devices, conveying belt 6 and data acquisition processing systems 7.The pipe tobacco measuring thickness device comprises pipe tobacco measuring thickness device A 2 and pipe tobacco measuring thickness device B 3.Pipe tobacco measuring thickness device A 2 links to each other with data acquisition processing system 7 with pipe tobacco measuring thickness device B 3; Pipe tobacco measuring thickness device A 2, pipe tobacco measuring thickness device B 3 are arranged on the mounting bracket 1; Be positioned at the top of conveying belt 6; Direction of motion along conveying belt 6 is installed successively, and it is S that the pinch roller 5 of the pinch roller 5 of pipe tobacco measuring thickness device A 2 and pipe tobacco measuring thickness device B 3 is placed on the spacing that (contacts) on the conveying belt 6 between two pinch rollers, and the direction of motion of its center line and conveying belt 6 is consistent and parallel.Shown in Fig. 1 a, Fig. 1 b.
In the tobacco elasticity on-line detection device 100, what pipe tobacco measuring thickness device A 2 and/or pipe tobacco measuring thickness device B 3 adopted is pinch roller formula measuring thickness device, and this pinch roller formula measuring thickness device comprises connecting rod 4, pinch roller 5, bolster 8, displacement transducer 9 and transmitter 10.Wherein, displacement transducer 9 can be angular displacement sensor or linear movement pick-up, and the output signal of displacement transducer 9 is delivered to data acquisition processing system 7 through transmitter 10.Shown in Fig. 2 a.
Shown in Fig. 2 b, be the cellular construction synoptic diagram of data acquisition processing system.Data acquisition processing system 7 comprises: pipe tobacco thickness coefficient amending unit 71, moisture in cut tobacco leveling factor unit 72, pipe tobacco temperature coefficient amending unit 73, the first tobacco elasticity processing unit 74, the second tobacco elasticity processing unit 75, the 3rd tobacco elasticity processing unit 76.
Pipe tobacco thickness coefficient amending unit 71 is used for the pipe tobacco thickness coefficient is revised, and obtains pipe tobacco thickness measuring correction factor K
1 repaiies(H
1);
Moisture in cut tobacco leveling factor unit 72 is used for the moisture in cut tobacco coefficient is revised, and obtains moisture in cut tobacco correction factor K
2 repair(H
2O);
Pipe tobacco temperature coefficient amending unit 73 is used for the pipe tobacco temperature coefficient is revised, and obtains pipe tobacco temperature correction coefficient K
3 repair(T ℃);
The first tobacco elasticity processing unit 74 connects pipe tobacco thickness coefficient amending unit 71, is used for according to the following said elasticity number of tobacco elasticity calculated with mathematical model;
R=K
1 repaiies(H
1) * (H
2-H
1)/H
1* 100% (1)
In the formula: R is the elasticity number (%) of pipe tobacco;
H
1Be first signal, the pipe tobacco thickness (mm) that the first pipe tobacco measuring thickness device is measured;
H
2Be secondary signal, the pipe tobacco thickness (mm) that the second pipe tobacco measuring thickness device is measured;
K
1 repaiies(H
1) be pipe tobacco thickness measuring correction factor, i.e. the used pipe tobacco thickness measuring of timing signal COEFFICIENT K
1(H
1) modified value.
The second tobacco elasticity processing unit 75 connects pipe tobacco thickness amending unit 71, said moisture in cut tobacco leveling factor unit 72, is used for according to the following said elasticity number of tobacco elasticity calculated with mathematical model;
R=K
1 repaiies(H
1) * K
2 repair(H
2O) * (H
2-H
1)/H
1* 100% (2)
In the formula, K
2 repair(H
2O) be the moisture in cut tobacco correction factor, i.e. the used moisture in cut tobacco COEFFICIENT K of timing signal
2(H
2O) modified value.
The 3rd tobacco elasticity processing unit 76 connects pipe tobacco thickness amending unit 71, said moisture in cut tobacco leveling factor unit 72, pipe tobacco temperature coefficient amending unit 73, is used for according to the following said elasticity number of tobacco elasticity calculated with mathematical model;
R=K
1 repaiies(H
1) * K
2 repair(H
2O) * K
3 repair(T ℃) * (H
2-H
1)/H
1* 100% (3)
In the formula, K
3 repair(T ℃) is the pipe tobacco temperature correction coefficient, i.e. the used pipe tobacco temperature coefficient of timing signal K
3The modified value of (T ℃).
In pipe tobacco measuring thickness device A 2, pipe tobacco measuring thickness device B 3, in order to regulate the size that 5 pairs of pipe tobaccos 13 of pinch roller are exerted pressure, also be provided with pressure governor, this pressure governor adopts lever one Weight type pressure governor, shown in Fig. 3 a, Fig. 3 b.For the pressure that alleviates 5 pairs of pipe tobaccos 13 of pinch roller can locate to add weight 11 at A ',, can change the size of exerting pressure through the weight that changes weight 11 for the pressure that increases by 5 pairs of pipe tobaccos 13 of pinch roller can locate to add weight 11 at B '.
In addition, this pressure governor also can adopt other forms of regulator, like the spring pressure regulator, to regulate the size that 5 pairs of pipe tobaccos 13 of pinch roller are exerted pressure.
In the tobacco elasticity on-line detection device 100, also comprise a fixed material pipe 14, be installed in the place ahead of pipe tobacco measuring thickness device A 2, pipe tobacco measuring thickness device B 3, the pipe tobacco feeding port place of conveying belt 6.As shown in Figure 5.
The purpose that fixed material pipe 14 is installed is the thickness of pipe tobacco 13 on the stable feed band 6, reduces the variation in thickness of pipe tobacco 13.
In the tobacco elasticity on-line detection device 100, the first tobacco elasticity processing unit 74 in the data acquisition processing system 7 calculates according to the elasticity number of following tobacco elasticity mathematical model to pipe tobacco.
R=K
1 repaiies(H
1) * (H
2-H
1)/H
1* 100% (1)
In the formula: R is the elasticity (%) of pipe tobacco;
H
1Pipe tobacco thickness (mm) for pipe tobacco measuring thickness device A 2 measurements;
H
2Pipe tobacco thickness (mm) for pipe tobacco measuring thickness device B 3 measurements;
In the formula, K
1 repaiies(H
1) be pipe tobacco thickness measuring correction factor, i.e. the used pipe tobacco thickness measuring of timing signal COEFFICIENT K
1(H
1) modified value.
K
1 repaiies(H
1) be to confirm through materials calibration by the pipe tobacco of the known tobacco elasticity value of pipe tobacco thickness coefficient amending unit 71 usefulness.Work as H
1Changing can be at different H when big
1Demarcate a plurality of K under the situation
1 repaiies(H
1) value, obtain K
1 repaiies(H
1) and H
1Variation relation can be according to H when detecting tobacco elasticity
1Value is according to K
1 repaiies(H
1) and H
1Variation relation is confirmed K
1 repaiies(H
1) value, thereby can calculate the tobacco elasticity value.
Because the elasticity of pipe tobacco 13 is relevant with the moisture of pipe tobacco 13, when the change of soil water content of pipe tobacco 13 is bigger, then need carry out the moisture correction to pipe tobacco 13.For this reason in tobacco elasticity on-line detection device 100; Also comprise a moisture in cut tobacco measuring instrument 12; This moisture in cut tobacco measuring instrument 12 is installed in the place ahead of pipe tobacco measuring thickness device A2 or the rear of pipe tobacco measuring thickness device B 3; And be located at the center line top of pipe tobacco measuring thickness device A 2 and pipe tobacco measuring thickness device B 3, shown in Fig. 4 a, Fig. 4 b.
At this moment, the second tobacco elasticity processing unit 75 of data acquisition processing system 7 is by the elasticity number of following tobacco elasticity calculated with mathematical model pipe tobacco.
R=K
1 repaiies(H
1) * K
2 repair(H
2O) * (H
2-H
1)/H
1* 100% (2)
In the formula, K
2 repair(H
2O) be the moisture in cut tobacco correction factor, i.e. the used moisture in cut tobacco COEFFICIENT K of timing signal
2(H
2O) modified value.
K
2 repair(H
2O) be by the known elasticity number that contains the different in moisture pipe tobacco of moisture in cut tobacco leveling factor unit 72 usefulness, draw different K through demarcation
2 repair(H
2O) value, thus K obtained
2 repair(H
2O), carry out fitting a straight line with least square method again or carry out the polygometry match and try to achieve K with the change of soil water content of pipe tobacco relation
2 repair(H
2O) and the relational expression between moisture in cut tobacco.During online detection tobacco elasticity, the moisture value and the above-mentioned K that measure according to moisture in cut tobacco measuring instrument 12
2 repair(H
2O) obtain K with the relational expression of moisture in cut tobacco
2 repair(H
2O) value, thus can calculate the tobacco elasticity value.
Because the elasticity of pipe tobacco 13 is relevant with the temperature of pipe tobacco 13, when the temperature variation of pipe tobacco 13 is bigger, then need carry out the temperature correction to pipe tobacco 13.For this reason in tobacco elasticity on-line detection device 100; Also comprise a pipe tobacco temperature measuring set; This pipe tobacco temperature measuring set is installed in the place ahead of pipe tobacco measuring thickness device A 2 or the rear of pipe tobacco measuring thickness device B 3, and is positioned at the center line top of pipe tobacco measuring thickness device A 2 and pipe tobacco measuring thickness device B3.
At this moment, the 3rd tobacco elasticity processing unit 76 of data acquisition processing system 7 is by the elasticity number of following tobacco elasticity calculated with mathematical model pipe tobacco.
R=K
1 repaiies(H
1) * K
2 repair(H
2O) * K
3 repair(T ℃) * (H
2-H
1)/H
1* 100% (3)
In the formula, K
3 repair(T ℃) is the pipe tobacco temperature correction coefficient, i.e. the used pipe tobacco temperature coefficient of timing signal K
3The modified value of (T ℃).
K
3 repair(T ℃) is by the elasticity number of the known different temperatures pipe tobacco of pipe tobacco temperature coefficient amending unit 73 usefulness, draws different K through demarcation
3 repair(T ℃) value, thus K obtained
3 repairThe temperature variation relation of (T ℃) and pipe tobacco is carried out fitting a straight line with least square method again or is carried out the polygometry match and try to achieve K
3 repairWhen the relational expression between (T ℃) and pipe tobacco temperature, online detection tobacco elasticity, according to pipe tobacco temperature measuring set temperature value measured and above-mentioned K
3 repair(T ℃) obtained K with the relational expression of pipe tobacco temperature
3 repair(T ℃) value, thus can calculate the tobacco elasticity value.
Should point out at this, in actual detected, select whether to carry out above-mentioned moisture in cut tobacco correction, the correction of pipe tobacco temperature according to the operating mode situation of pipe tobacco.
In order to improve measuring accuracy, correct measurement goes out the pipe tobacco elasticity number, must resolve two problems:
1, the duty of tobacco elasticity on-line detection device 100 should be tried one's best near the duty of static tobacco elasticity pick-up unit, to satisfy the tobacco elasticity measurement requirement.
Static pipe tobacco is measured the working condition of elastomeric check device: the sampling receptacle internal diameter is 95mm, highly for 240mm, gauge head pressure are 7.4kg, the speed of exerting pressure is (30 ± 3) mm/s, the time of exerting pressure is that 7s, interval time are 10s.
Measuring process: get the 70g sample and put into sampling receptacle, apply 7.4kg pressure, the 7s that exerts pressure record height of specimen H
1, the pipe tobacco height H of record sample behind the release of pressure 10s
2, the computing formula of tobacco elasticity R is following:
R＝(H
2-H
1)/H
1*100％
In the formula: R is the elasticity (%) of pipe tobacco;
H
1Be the back pipe tobacco thickness (mm) of exerting pressure;
H
2Be pipe tobacco thickness (mm) behind the release of pressure.
During design tobacco elasticity on-line detection device 100, select suitable pinch roller parameter, mounting distance and belt speed, the working condition when making it near static measurement.
2, set up the mathematical model of tobacco elasticity on-line measurement.
Existing following to the problems referred to above division:
The duty of A, tobacco elasticity on-line detection device 100 and pinch roller parameter are selected
The duty of supposing tobacco elasticity on-line detection device 100 is as shown in Figure 5.
Pinch roller A parameter is: diameter=d
A, width=D
A, weight=W
A
Pinch roller B parameter is: diameter=d
B, width=D
B, weight=W
B
A) the pinch roller parameter is selected:
A1) diameter d of pinch roller A
A
The diameter d of pinch roller A
ABe greater than the thickness of tested pipe tobacco, otherwise pinch roller A will be buried by pipe tobacco;
Weight＞7.9kg of pinch roller A.
A2) width D of pinch roller A
A
The pinch roller width D
ADiameter=the 95mm of≤static tobacco elasticity pick-up unit container.
A3) weight W of pinch roller A
A
The material density of supposing pinch roller A is ρ;
The weight W of pinch roller A
A=π (d
A/ 2)
2* D
A* ρ.
A4) parameter of pinch roller B is selected identical with pinch roller A
The pressure of pinch roller A, B requires to regulate through pressure governor to be confirmed.
B) duty is confirmed:
B1) selection of belt speed V
The diameter d of pinch roller A
ADefinite, belt speed is selected to satisfy the rate request of exerting pressure, and static test has provided the speed V that exerts pressure
PressThe speed of the exerting pressure V that=(30 ± 3) mm/s belt speed V and pinch roller give
Press(circumference exert pressure speed) has following relation:
V=(pi/2) * V
Press
Belt speed V=(pi/2) * V
Press=47.1mm/s
B2) pinch roller A and pinch roller B between apart from S
S selects to satisfy release of pressure time requirement:
∵ S/V=release of pressure time=10s
∴S＝10s*V＝10*47.1＝471mm。
In order to satisfy the time 7s requirement of exerting pressure, can add precompressed wheel 15 in the place ahead of pinch roller A or add and keep pressure pinch roller 16, shown in Fig. 6 a, Fig. 6 b at the rear of pinch roller A.
The mathematical model of B, tobacco elasticity on-line measurement
Because tobacco elasticity is relevant with pipe tobacco water cut, pipe tobacco temperature and flow of tobacco, set the correction factor method so adopt, set up following tobacco elasticity mathematical model:
R=K
1 repaiies(H
1) * K
2 repair(H
2O) * K
3 repair(T ℃) * (H
2-H
1)/H
1* 100% (3)
In the formula: R is tobacco elasticity (%);
K
1 repaiies(H
1) be pipe tobacco thickness correction factor;
K
2 repair(H
2O) be the moisture in cut tobacco correction factor;
K
3 repair(T ℃) is the pipe tobacco temperature correction coefficient;
H
1Pipe tobacco thickness (mm) for pipe tobacco measuring thickness device A 2 measurements;
H
2Pipe tobacco thickness (mm) for pipe tobacco measuring thickness device B 3 measurements;
Formula (1) if in the moisture variation of pipe tobacco little, K then
2 repair(H
2O)=1.
Formula (1) if in the pipe tobacco temperature variation little, K then
3 repair(T ℃)=1.
Work as K
2 repair(H
2O)=1, K
3 repair(T ℃)=1 o'clock, moisture in cut tobacco, pipe tobacco temperature are not revised.Adopt said method, can solve the tobacco elasticity problem on line detection preferably.
Further technical scheme of the present invention is described below through concrete embodiment.
1, mathematical model
In first embodiment, when setting up mathematical model, suppose that moisture in cut tobacco and pipe tobacco temperature variation are little, then need not carry out moisture in cut tobacco, the correction of pipe tobacco temperature, i.e. K
2 repair(H
2O)=1, K
3 repair(T ℃)=1.At this moment, the mathematical model of employing is:
R=K
1 repaiies(H
1) * (H
2-H
1)/H
1* 100% (1)
2, the parameter of duty and pipe tobacco measuring thickness device is confirmed
A) working status parameter
Belt speed V=47.1Vmm/s;
Between pipe tobacco measuring thickness device A 2, pipe tobacco measuring thickness device B 3 apart from S=471mm.
B) pipe tobacco measuring thickness device parameter
B1) parameter of pinch roller A
Width D
A≤95mm selects D
A=90mm;
Diameter d
A>=test pipe tobacco thickness;
Suppose test pipe tobacco thickness=150mm
Selected pinch roller diameter=250mm
Weight W
A, suppose that the pinch roller material is an edible plastic
Its material density=2.0g/cm
3
W then
A=π (25/2)
2* 9*2.0g/cm
3
＝3.14*156.25*9*2
＝8.831kg
Weight 8.831kg＞7.4kg meets the demands.
B2) parameter of pinch roller B
The parameter of pinch roller B is identical with the parameter of pinch roller A;
B3) displacement transducer
Select FB-900C type angular displacement sensor for use, resolution=0.01 degree.
B4) transmitter 10 adopts the high reliability microprocessor to process, and the conversion precision is 16.
3, data acquisition processing system is selected
Data acquisition processing system 7 selects Siemens PLC C to process, and CPU adopts 300 types and has the tobacco elasticity leveling factor unit and the tobacco elasticity data processing unit.
4, K
1 repaiies(H
1) confirm
Adopt known tobacco elasticity to demarcate and confirm K
1 repaiies(H
1):
Suppose K
1(H
1)=1, conveying belt 6 feeding tobacco-threads 13 are through tobacco elasticity on-line detection device 100, and data acquisition processing system 7 is gathered the signal H of pipe tobacco measuring thickness device A 2
AiSignal H with pipe tobacco measuring thickness device B 3
BiIf collection period is 1 second, according to following tobacco elasticity mathematical model:
R＝K
1(H
1)*(H
Bi-H
Ai)/H
Ai*100％
Calculate the tobacco elasticity value of per second, the pipe tobacco grab sample of meanwhile pinch roller 5 being pressed supposes that it is R that measurement time t=60 second, data acquisition processing system 7 provide the tobacco elasticity mean value of measuring in 60 seconds
Survey=3.8%, the pipe tobacco of sampling records elasticity R through static pipe tobacco measuring instrument
0=3.9%, K then
1(H
1) modified value is:
K
1 repaiies(H
1)=(R
0/ R
Survey) * K
1(H
1)=(3.9%/3.8%) * 1=1.026
The elasticity mathematical model of final definite pipe tobacco is:
R
i＝1.026*(H
2i-H
1i)/H
1i*100％
During online detection, tobacco elasticity on-line detection device 100 is by above-mentioned calculated with mathematical model tobacco elasticity value.
Further describe the application's technical scheme below again through second embodiment, in this second embodiment, described the tobacco elasticity on-line detection device that has the moisture correction.
Moisture in cut tobacco measuring instrument 12 is selected the infrared moisture measuring instrument, is installed in the place ahead of measuring thickness device A 2.
1) the tobacco elasticity mathematical model that adopts is:
R=K
1 repaiies(H
1) * K
2 repair(H
2O) * (H
2-H
1)/H
1* 100% (2)
K
1(H
1) definite K in first embodiment
1 repaiies(H
1K is supposed to demarcate in)=1.026
1(H
1) time pipe tobacco moisture value=11.5%, this moment K
2 repair(H
2O)=1.
As previously mentioned, adopt the different moisture content pipe tobacco to demarcate and can get following data, see table 1 through tobacco elasticity on-line detection device 100:
Table 1
| Sequence number | The used K of timing signal 2(H 2O) value | Timing signal moisture in cut tobacco value | On-line measuring device is measured the tobacco elasticity value | Static detection device is measured the tobacco elasticity value | Revise back moisture in cut tobacco correction factor K 2 repair(H 2O) |
| 1 | 1 | 11.5％ | 3.9％ | 3.9％ | 1 |
| 2 | 1 | 12％ | 3.80％ | 3.85％ | 1.013 |
| 3 | 1.013 | 12.5％ | 3.92％ | 4.01％ | 1.036 |
| 4 | 1.036 | 13％ | 3.85％ | 3.91％ | 1.052 |
| 5 | 1.052 | 13.5％ | 3.79％ | 3.88％ | 1.076 |
| 6 | 1.076 | 14％ | 3.81％ | 3.96％ | 1.118 |
Find out moisture in cut tobacco and K according to nominal data
2 repair(H
2O) relation between is with K
2 repair(H
2O) be that horizontal ordinate gets K for ordinate with the moisture in cut tobacco value
2 repair(H
2O) with the moisture in cut tobacco change curve, as shown in Figure 8.
According to K
2 repair(H
2O) with a of moisture in cut tobacco change curve, b, c, d, e, each point coordinate of f carries out curve fitting:
(a) carry out slope=K that fitting a straight line can be obtained fitting a straight line with least square method
0, intercept=b tries to achieve K
2 repair(H
2O) expression formula:
K
2 repair(H
2O)=K
0* (moisture value)
i+ b (4)
According to the moisture in cut tobacco value that infrared moisture measuring instrument 12 records, the substitution formula is tried to achieve K in (4)
2 repair(H
2O) value is with K
2 repair(H
2O) substitution has the elasticity mathematical model (formula (2)) of moisture in cut tobacco correction to calculate the elasticity number of pipe tobacco again.
(b) can adopt polygometry to carry out match:
Connect a-b, b-c, c-d, d-e, e-f obtain a plurality of broken lines.
The a-b section
Slope K
1=(1.013-1)/(12%-11.5%)
Moisture is less than 12% o'clock, K
2 repair(H
2O) expression formula is:
K
2 repair(H
2O)=K
1* (record moisture value-11.5%)+1 (5)
The b-c section
Slope K
2=(1.036-1.013)/(12.5%-12%)
Moisture is less than 12.5% o'clock, K
2 repair(H
2O) expression formula is:
K
2 repair(H
2O)=K
2* (record moisture value-12%)+1.013 (6)
The c-d section
Slope K
3=(1.052-1.036)/(13%-12.5%)
Moisture is less than 13% o'clock, K
2 repair(H
2O) expression formula is:
K
2 repair(H
2O)=K
3* (record moisture value-12.5%)+1.036 (7)
The d-e section
Slope K
4=(1.076-1.052)/(13.5%-13%)
Moisture is less than 13.5% o'clock, K
2 repair(H
2O) expression formula is:
K
2 repair(H
2O)=K
4* (record moisture value-13%)+1.052 (8)
The e-f section
Slope K
5=(1.118-1.076)/(14%-13.5%)
Moisture is greater than 13.5% o'clock, K
2 repair(H
2O) expression formula is:
K
2 repair(H
2O)=K
5* (record moisture value-13.5%)+1.076 (9)
To sum up, K
2 repair(H
2O) moisture correction process flow diagram is as shown in Figure 7.
According to the moisture value that moisture in cut tobacco measuring instrument 12 is measured, press K
2 repair(H
2O) moisture correction process flow diagram is confirmed K
2 repair(H
2O) be worth, calculate the elasticity number of pipe tobacco again according to elasticity mathematical model formula (2).
As shown in Figure 9, be the online testing process figure of tobacco elasticity of the present invention.In conjunction with Fig. 1-shown in Figure 8, this flow process specifically comprises the steps:
Step S901, the pipe tobacco of carrying through pipe tobacco measuring thickness device A 2,3 pairs of conveying belt of pipe tobacco measuring thickness device B 6 13 carries out thickness measure;
Step S902 gathers the signal H that pipe tobacco measuring thickness device A 2 measures through data acquisition processing system 7
1The signal H that measures with pipe tobacco measuring thickness device B 3
2
Step S903, data acquisition processing system 7 calculates according to the elasticity number of tobacco elasticity mathematical model to pipe tobacco 13.
Further, among the step S903, the first tobacco elasticity processing unit 74 of data acquisition processing system 7 calculates according to the elasticity number of tobacco elasticity mathematical model to pipe tobacco.
R=K
1 repaiies(H
1) * (H
2-H
1)/H
1* 100% (1)
In the formula: R is the elasticity (%) of pipe tobacco;
H
1Pipe tobacco thickness (mm) for pipe tobacco measuring thickness device A 2 measurements;
H
2Pipe tobacco thickness (mm) for pipe tobacco measuring thickness device B 3 measurements;
K
1 repaiies(H
1) be pipe tobacco thickness measuring correction factor, i.e. the used pipe tobacco thickness measuring of timing signal COEFFICIENT K
1(H
1) modified value.
Wherein, K
1 repaiies(H
1) be to confirm through materials calibration by the pipe tobacco of the known tobacco elasticity value of pipe tobacco thickness coefficient amending unit 71 usefulness.Work as H
1Changing can be at different H when big
1Demarcate a plurality of K under the situation
1 repaiies(H
1) value, obtain K
1 repaiies(H
1) and H
1Variation relation can be according to H when detecting tobacco elasticity
1Value is according to K
1 repaiies(H
1) and H
1Variation relation is confirmed K
1 repaiies(H
1) value, thereby can calculate the tobacco elasticity value.
Because the elasticity of pipe tobacco 13 is relevant with the moisture of pipe tobacco 13, when the change of soil water content of pipe tobacco 13 is bigger, then need carry out the moisture correction to pipe tobacco 13.For this reason in tobacco elasticity on-line detection device 100; Also comprise a moisture in cut tobacco measuring instrument 12; This moisture in cut tobacco measuring instrument 12 is installed in the place ahead of pipe tobacco measuring thickness device A2 or the rear of pipe tobacco measuring thickness device B 3, and is positioned at the center line top of pipe tobacco measuring thickness device A 2 and pipe tobacco measuring thickness device B 3.At this moment, the second tobacco elasticity processing unit 75 of data acquisition processing system 7 is by the elasticity number of following tobacco elasticity calculated with mathematical model pipe tobacco.
R=K
1 repaiies(H
1) * K
2 repair(H
2O) * (H
2-H
1)/H
1* 100% (2)
In the formula, K
2 repair(H
2O) be the moisture in cut tobacco correction factor, i.e. the used moisture in cut tobacco COEFFICIENT K of timing signal
2(H
2O) modified value.
K
2 repair(H
2O) be by the known elasticity number that contains the different in moisture pipe tobacco of moisture in cut tobacco leveling factor unit 72 usefulness, draw different K through demarcation
2 repair(H
2O) value, thus K obtained
2 repair(H
2O) change of soil water content with pipe tobacco concerns that Ran carries out fitting a straight line with least square method or carries out the polygometry match and try to achieve K
2 repair(H
2O) and the relational expression between moisture in cut tobacco.During online detection tobacco elasticity, the moisture value and the above-mentioned K that measure according to moisture in cut tobacco measuring instrument 12
2 repair(H
2O) obtain K with the relational expression of moisture in cut tobacco
2 repair(H
2O) value, thus can calculate the tobacco elasticity value.
Because the elasticity of pipe tobacco 13 is relevant with the temperature of pipe tobacco 13, when the temperature variation of pipe tobacco 13 is bigger, then need carry out the temperature correction to pipe tobacco 13.For this reason in tobacco elasticity on-line detection device 100; Also comprise a pipe tobacco temperature measuring set; This pipe tobacco temperature measuring set is installed in the place ahead of pipe tobacco measuring thickness device A 2 or the rear of pipe tobacco measuring thickness device B 3, and is positioned at the center line top of pipe tobacco measuring thickness device A 2 and pipe tobacco measuring thickness device B3.At this moment, the 3rd tobacco elasticity processing unit 76 of data acquisition processing system 7 is by the elasticity number of following tobacco elasticity calculated with mathematical model pipe tobacco.
R=K
1 repaiies(H
1) * K
2 repair(H
2O) * K
3 repair(T ℃) * (H
2-H
1)/H
1* 100% (3)
In the formula, K
3 repair(T ℃) is the pipe tobacco temperature correction coefficient, i.e. the used pipe tobacco temperature coefficient of timing signal K
3The modified value of (T ℃).
K
3 repair(T ℃) is by the elasticity number of the known different temperatures pipe tobacco of pipe tobacco temperature coefficient amending unit 73 usefulness, draws different K through demarcation
3 repair(T ℃) value, thus K obtained
3 repairThe temperature variation relation of (T ℃) and pipe tobacco is carried out fitting a straight line with least square method again or is carried out the polygometry match and try to achieve K
3 repairWhen the relational expression between (T ℃) and pipe tobacco temperature, online detection tobacco elasticity, according to pipe tobacco temperature measuring set temperature value measured and above-mentioned K
3 repair(T ℃) obtained K with the relational expression of pipe tobacco temperature
3 repair(T ℃) value, thus can calculate the tobacco elasticity value.
Certainly the present invention can also have various embodiments, as the pipe tobacco temperature measuring set is installed, and demarcates different pipe tobacco temperature K with the tobacco elasticity value of different temperatures
3 repair(T ℃) value is tried to achieve its variation relation, during online detection, according to the pipe tobacco temperature value of measuring, obtains K
3 repair(T ℃) value, according to tobacco elasticity calculated with mathematical model tobacco elasticity value, its way is identical with second embodiment again.Certainly; The present invention also can have other various embodiments; Under the situation that does not deviate from spirit of the present invention and essence thereof; Those of ordinary skill in the art work as can make various corresponding changes and distortion according to the present invention, but these corresponding changes and distortion all should belong to the protection domain of the appended claim of the present invention.
Adopt this pick-up unit can detect tobacco elasticity variation, tobacco elasticity distribution, fluctuation range etc. in the production run in real time.Characteristics such as that this pick-up unit has is stable, reliable, measuring accuracy height.
Claims (21)
1. a tobacco elasticity on-line detection device is characterized in that, comprises mounting bracket, at least two pipe tobacco measuring thickness devices, conveying belt, data acquisition processing system;
Said pipe tobacco measuring thickness device comprises the first pipe tobacco measuring thickness device, the second pipe tobacco measuring thickness device that is positioned at said conveying belt top; The said first pipe tobacco measuring thickness device, the said second pipe tobacco measuring thickness device are set in turn on the said mounting bracket with the spacing of setting along the direction of motion of said conveying belt, and the center line of the said first pipe tobacco measuring thickness device, the said second pipe tobacco measuring thickness device is consistent with the direction of motion of said conveying belt and be parallel to each other;
Said data acquisition processing system; Connect the said first pipe tobacco measuring thickness device, the said second pipe tobacco measuring thickness device; Be used for when pipe tobacco is carried on said conveying belt; Gather first signal, secondary signal that thickness that the said first pipe tobacco measuring thickness device, the said second pipe tobacco measuring thickness device measure said pipe tobacco respectively obtains, and obtain the elasticity number of said pipe tobacco according to said first signal, said secondary signal;
Said first pipe tobacco measuring thickness device and the said second pipe tobacco measuring thickness device are pinch roller formula measuring thickness device.
2. tobacco elasticity on-line detection device according to claim 1 is characterized in that, said data acquisition processing system comprises again:
Pipe tobacco thickness coefficient amending unit is used for the pipe tobacco thickness coefficient is revised, and obtains pipe tobacco thickness measuring correction factor;
The first tobacco elasticity processing unit connects said pipe tobacco thickness coefficient amending unit, is used for according to the following said elasticity number of tobacco elasticity calculated with mathematical model;
R=K
1 repaiies(H
1) * (H
2-H
1)/H
1* 100%
In the formula: R is the elasticity number (%) of pipe tobacco;
H
1Be first signal, represent the pipe tobacco thickness that the first pipe tobacco measuring thickness device is measured;
H
2Be secondary signal, represent the pipe tobacco thickness that the second pipe tobacco measuring thickness device is measured;
K
1 repaiies(H
1) be pipe tobacco thickness measuring correction factor;
The unit of the pipe tobacco thickness that the pipe tobacco thickness that the first pipe tobacco measuring thickness device is measured, the second pipe tobacco measuring thickness device are measured is mm.
3. tobacco elasticity on-line detection device according to claim 1 is characterized in that, this pinch roller formula measuring thickness device comprises pinch roller, connecting rod, bolster, displacement transducer, transmitter;
Said bolster is connected with said pinch roller through said connecting rod, and said displacement transducer is connected with said bolster, and said first signal, said secondary signal are delivered to said data acquisition processing system through said transmitter.
4. tobacco elasticity on-line detection device according to claim 3 is characterized in that, said displacement transducer is angular displacement sensor or linear movement pick-up.
5. according to claim 3 or 4 described tobacco elasticity on-line detection device, it is characterized in that said on-line measuring device also comprises: pressure governor is used to regulate the pressure of said pinch roller to said pipe tobacco.
6. according to claim 1,2,3 or 4 described tobacco elasticity on-line detection device; It is characterized in that; Said on-line measuring device also comprises: fixed material pipe; Be positioned at the said first pipe tobacco measuring thickness device, said second pipe tobacco measuring thickness device the place ahead, be installed in the pipe tobacco feeding port place of said conveying belt, be used to stablize the thickness of said pipe tobacco on said conveying belt.
7. tobacco elasticity on-line detection device according to claim 2; It is characterized in that; Said on-line measuring device also comprises: the moisture in cut tobacco measuring instrument; Be installed in the place ahead of the said first pipe tobacco measuring thickness device or the rear of the said second pipe tobacco measuring thickness device, and be positioned at the center line top of the said first pipe tobacco measuring thickness device, the said second pipe tobacco measuring thickness device, be used for measuring greatly the time moisture of said pipe tobacco when the change of soil water content of said pipe tobacco.
8. tobacco elasticity on-line detection device according to claim 7 is characterized in that, said data acquisition processing system also comprises:
The moisture in cut tobacco leveling factor unit is used for the moisture in cut tobacco coefficient is revised, and obtains the moisture in cut tobacco correction factor;
The second tobacco elasticity processing unit connects said pipe tobacco thickness coefficient amending unit, said moisture in cut tobacco leveling factor unit, is used for according to the following said elasticity number of tobacco elasticity calculated with mathematical model;
R=K
1 repaiies(H
1) * K
2 repair(H
2O) * (H
2-H
1)/H
1* 100%
In the formula, K
2 repair(H
2O) be the moisture in cut tobacco correction factor.
9. tobacco elasticity on-line detection device according to claim 8 is characterized in that, said moisture in cut tobacco leveling factor unit draws different K with the known elasticity number that contains the different in moisture pipe tobacco through demarcation
2 repair(H
2O) value, thus K obtained
2 repair(H
2O), carry out fitting a straight line with least square method again or carry out the polygometry match and try to achieve K with the change of soil water content of pipe tobacco relation
2 repair(H
2O) and first relational expression between moisture in cut tobacco, moisture value, said first relational expression measured according to said moisture in cut tobacco measuring instrument are obtained K
2 repair(H
2O).
10. according to Claim 8 or 9 described tobacco elasticity on-line detection device; It is characterized in that; Said on-line measuring device also comprises: the pipe tobacco temperature measuring set; Be installed in the place ahead of the said first pipe tobacco measuring thickness device or the rear of the said second pipe tobacco measuring thickness device, and be positioned at the center line top of the said first pipe tobacco measuring thickness device, the said second pipe tobacco measuring thickness device, be used for measuring greatly the time temperature of said pipe tobacco when the temperature variation of said pipe tobacco.
11. tobacco elasticity on-line detection device according to claim 10 is characterized in that, said data acquisition processing system also comprises:
Pipe tobacco temperature coefficient amending unit is used for the pipe tobacco temperature coefficient is revised, and obtains the pipe tobacco temperature correction coefficient;
The 3rd tobacco elasticity processing unit connects said pipe tobacco thickness coefficient amending unit, said moisture in cut tobacco leveling factor unit, said pipe tobacco temperature coefficient amending unit, is used for according to the following said elasticity number of tobacco elasticity calculated with mathematical model;
R=K
1 repaiies(H
1) * K
2 repair(H
2O) * K
3 repair(T ℃) * (H
2-H
1)/H
1* 100%
In the formula, K
3 repair(T ℃) is the pipe tobacco temperature correction coefficient.
12. tobacco elasticity on-line detection device according to claim 11 is characterized in that, said pipe tobacco temperature coefficient amending unit draws different K with the elasticity number of known different temperatures pipe tobacco through demarcation
3 repair(T ℃) value, thus K obtained
3 repairThe temperature variation relation of (T ℃) and pipe tobacco is carried out fitting a straight line with least square method again or is carried out the polygometry match and try to achieve K
3 repairSecond relational expression between (T ℃) and pipe tobacco temperature is obtained K according to said pipe tobacco temperature measuring set temperature value measured, said second relational expression
3 repair(T ℃) value.
13. a tobacco elasticity online test method of using the described tobacco elasticity on-line detection device of claim 1 to carry out is characterized in that, comprising:
Step 1, the pipe tobacco of conveying belt being carried through the first pipe tobacco measuring thickness device, the second pipe tobacco measuring thickness device carries out thickness measure;
Step 2, by data acquisition processing system gather the said first pipe tobacco measuring thickness device, the said second pipe tobacco measuring thickness device is measured first signal, the secondary signal that said pipe tobacco obtains respectively;
Step 3 is calculated the elasticity number of said pipe tobacco according to said first signal, said secondary signal.
14. tobacco elasticity online test method according to claim 13 is characterized in that, in the said step 3, further comprises: with the step of the elasticity number of the said pipe tobacco of following tobacco elasticity calculated with mathematical model;
R=K
1 repaiies(H
1) * (H
2-H
1)/H
1* 100%
In the formula: R is the elasticity (%) of pipe tobacco;
H
1Be first signal, represent the pipe tobacco thickness that the first pipe tobacco measuring thickness device is measured;
H
2Be secondary signal, represent the pipe tobacco thickness that the second pipe tobacco measuring thickness device is measured;
K
1 repaiies(H
1) be pipe tobacco thickness measuring correction factor;
The unit of the pipe tobacco thickness that the pipe tobacco thickness that the first pipe tobacco measuring thickness device is measured, the second pipe tobacco measuring thickness device are measured is mm.
15. tobacco elasticity online test method according to claim 14 is characterized in that, in the said step 3, further comprises: select the step of whether said pipe tobacco being carried out moisture correction and/or temperature correction according to the operating mode situation of said pipe tobacco.
16. tobacco elasticity online test method according to claim 15; It is characterized in that; In the said step 3; Further comprise: when the change of soil water content of said pipe tobacco is big, adopt drimeter to measure the moisture of said pipe tobacco, and with the step of the elasticity number of the said pipe tobacco of following tobacco elasticity calculated with mathematical model:
R=K
1 repaiies(H
1) * K
2 repair(H
2O) * (H
2-H
1)/H
1* 100%
In the formula, K
2 repair(H
2O) be the moisture in cut tobacco correction factor.
17. tobacco elasticity online test method according to claim 16 is characterized in that, in the said step 3, the step of obtaining said moisture in cut tobacco correction factor is specially:
With the known elasticity number that contains the different in moisture pipe tobacco, draw different K through demarcation
2 repair(H
2O) value, thus K obtained
2 repair(H
2O), carry out fitting a straight line with least square method again or carry out the polygometry match and try to achieve K with the change of soil water content of pipe tobacco relation
2 repair(H
2O) and first relational expression between the moisture in cut tobacco, obtain K according to moisture value, said first relational expression measured
2 repair(H
2O).
18. according to claim 16 or 17 described tobacco elasticity online test method, it is characterized in that, in the said step 3, further comprise: when the change of soil water content of said pipe tobacco is little, said pipe tobacco is not carried out the step of moisture correction, at this moment K
2 repair(H
2O)=1.
19. according to claim 16 or 17 described tobacco elasticity online test method; It is characterized in that; In the said step 3; Further comprise: when the temperature variation of said pipe tobacco is big, adopts temperature measuring set to measure the temperature of said pipe tobacco, and calculate the step of the elasticity number of said pipe tobacco with following formula:
R=K
1 repaiies(H
1) * K
2 repair(H
2O) * K
3 repair(T ℃) * (H
2-H
1)/H
1* 100%
In the formula, K
3 repair(T ℃) is the pipe tobacco temperature correction coefficient.
20. tobacco elasticity online test method according to claim 19 is characterized in that, in the said step 3, the step of obtaining said pipe tobacco temperature correction coefficient is specially:
With the elasticity number of known different temperatures pipe tobacco, draw different K through demarcation
3 repair(T ℃) value, thus K obtained
3 repairThe temperature variation relation of (T ℃) and pipe tobacco is carried out fitting a straight line with least square method again or is carried out the polygometry match and try to achieve K
3 repairSecond relational expression between (T ℃) and pipe tobacco temperature is obtained K according to temperature value measured, said second relational expression
3 repair(T ℃) value.
21. tobacco elasticity online test method according to claim 19 is characterized in that, in the said step 3, further comprises: when the temperature variation of said pipe tobacco is little, said pipe tobacco is not carried out the step of temperature correction, at this moment K
3 repair(T ℃)=1.
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| CN110018059A (en) * | 2019-04-11 | 2019-07-16 | 河南中烟工业有限责任公司 | A kind of tobacco elasticity detection method and tobacco shred elastic detector |
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