CN105146724A - Method for tobacco leaf thickness detection based on laser transmittance - Google Patents
Method for tobacco leaf thickness detection based on laser transmittance Download PDFInfo
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- CN105146724A CN105146724A CN201510545519.2A CN201510545519A CN105146724A CN 105146724 A CN105146724 A CN 105146724A CN 201510545519 A CN201510545519 A CN 201510545519A CN 105146724 A CN105146724 A CN 105146724A
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- tobacco leaf
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- laser transmittance
- thickness
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Abstract
The invention discloses a method for tobacco leaf thickness detection based on laser transmittance. A plurality of standard tobacco leaves with known and different thicknesses are selected to manufacture standard samples, the standard samples are placed in a black box, the laser transmittance of each standard sample is detected and calculated, and a functional relation expression of the tobacco leaf thicknesses and the laser transmittance is established; the to-be-detected tobacco leaves are placed in the black box, the laser transmittance of the to-be-detected tobacco leaves are detected and calculated, and the thicknesses of the to-be-detected tobacco leaves are calculated through the functional relation expression of the tobacco leaf thicknesses and the laser transmittance. By detection in the black box, the interference of light such as sunlight and lamp light can be avoided. Compared with the prior art, the method has the advantages of being small in error, high in accuracy, quick in speed and high in efficiency.
Description
Technical field
The present invention relates to tobacco purchase classification field, more specifically, relate to a kind of tobacco leaf thickness detecting method based on laser transmittance.
Background technology
When tobacco purchase stands in purchase tobacco, because land for growing field crops tobacco leaves property is different, after modulation, quality is not identical yet, if quality mixes, use value must reduce, and causes the wasting of resources, and economic benefit reduces.Former cigarette is through repeatedly processing, and scientific formula just can be produced and meet that consumer requires, that style is different cigarette, and scientific formula completes on the basis of tobacco leaf grading, if high-grade Virginian-type cigarette is based on middle leaf.Tobacco leaf grading is conducive to transferring tobacco grower and produces the enthusiasm of sound tobacco, increases the income of tobacco grower, with time stage and price also for tobacco grower specifies the direction of leaf tobacco production.Reasonable classification is conducive to carrying out and reasonably develops the exploitation low quality tobacco leaf of tobacco leaf byproduct and tobacco leaf byproduct.Therefore, tobacco leaf grading during tobacco purchase has great importance.
GB2635-1992 gives the standard of cured tobacco leaf classification, and be divided into 42 grades, the parameter that tobacco leaf grading relates to is more, comprises all many-sides such as position, color, oil content, colourity, width, length, thickness, residual wound and breakage.Thickness is the important parameter of tobacco leaf grading, can reflect the quality of the quality of tobacco leaf.The measurement of current tobacco leaf thickness is generally stacked up by multiple tobacco leaf, by its thickness of kind of calliper.Owing to having space to exist unavoidably between every layer of tobacco leaf after tobacco leaf superposition, and the limited precision of slide calliper rule, there is comparatively big error when therefore the method measures tobacco leaf thickness, and certainty of measurement is low, speed is slow, efficiency is low, badly influences the progress of tobacco purchase.
Summary of the invention
The present invention overcomes that error described in above-mentioned prior art is large, precision is low, speed is slow, inefficient defect, provides the tobacco leaf thickness detecting method based on laser transmittance that a kind of error is little, precision is high, speed is fast, efficiency is high.
For solving the problems of the technologies described above, technical scheme of the present invention is as follows:
Based on a tobacco leaf thickness detecting method for laser transmittance, said method comprising the steps of:
S1: choose some known thickness and the different Standard tobacco leaf production standard sample of thickness;
S2: respectively each master sample is placed in black box, adopts the laser of known strength incident from the side of master sample, adopts photodetector to receive the laser through master sample from the opposite side of master sample;
S3: the laser transmittance calculating each master sample, sets up the functional relation expression formula of tobacco leaf thickness and laser transmittance;
S4: tobacco leaf to be measured is placed in black box, adopts the laser identical with step S2 incident from the side of tobacco leaf to be measured, adopts photodetector to receive the laser through tobacco leaf to be measured from the opposite side of tobacco leaf to be measured;
S5: the laser transmittance calculating tobacco leaf to be measured, calculates the thickness of tobacco leaf to be measured by the functional relation expression formula of tobacco leaf thickness and laser transmittance.
In the preferred scheme of one, in step S1, the concrete grammar of production standard sample comprises the following steps:
S11: choose some known thickness and the different Standard tobacco leaf of thickness;
S12: be cut to the square tobacco leaf that the length of side is 1-2cm after Standard tobacco leaf being removed master pulse and offshoot, be master sample.Thickness due to master pulse and offshoot is obviously greater than other positions of tobacco leaf, therefore removes master pulse and offshoot can ensure the smooth of tobacco leaf.
In the preferred scheme of one, in step S3, the concrete grammar calculating the laser transmittance of master sample is: the laser transmittance of master sample equals the ratio through the laser intensity of master sample and the laser intensity of incident master sample.
In the preferred scheme of one, in step S4, get the tip of tobacco leaf to be measured, middle part and base portion respectively and be made into the square tobacco leaf that the length of side is 1-2cm, it is placed in black box respectively, adopt the laser identical with step S2 incident from the side of square tobacco leaf, adopt photodetector to receive the laser through tobacco leaf to be measured from the opposite side of square tobacco leaf.
In the preferred scheme of one, in step S5, the method calculating the laser transmittance of tobacco leaf to be measured is: the laser transmittance calculating the tip of tobacco leaf to be measured, middle part and base portion respectively, averages be the laser transmittance of tobacco leaf to be measured to it.The thickness of tobacco leaf tip, middle part and base portion may have fine distinction, therefore calculate respectively the tip of tobacco leaf to be measured, middle part and base portion laser transmittance and it is averaged can reflect the integral thickness of tobacco leaf to be measured.
Compared with prior art, the beneficial effect of technical solution of the present invention is: the present invention discloses a kind of tobacco leaf thickness detecting method based on laser transmittance, choose some known thickness and the different Standard tobacco leaf production standard sample of thickness, master sample is placed in black box, detect and calculate the laser transmittance of each master sample, setting up the functional relation expression formula of tobacco leaf thickness and laser transmittance; Tobacco leaf to be measured is placed in black box, detects and calculate the laser transmittance of tobacco leaf to be measured, calculated the thickness of tobacco leaf to be measured by the functional relation expression formula of tobacco leaf thickness and laser transmittance.In black box, detect the interference can avoiding the light such as daylight, light, the present invention has relative to prior art the advantage that error is little, precision is high, speed is fast, efficiency is high.
Accompanying drawing explanation
Fig. 1 is the flow chart of the tobacco leaf thickness detecting method that the present invention is based on laser transmittance.
Detailed description of the invention
Accompanying drawing, only for exemplary illustration, can not be interpreted as the restriction to this patent;
In order to better the present embodiment is described, some parts of accompanying drawing have omission, zoom in or out, and do not represent the size of actual product;
To those skilled in the art, in accompanying drawing, some known features and explanation thereof may be omitted is understandable.
Below in conjunction with drawings and Examples, technical scheme of the present invention is described further.
Embodiment 1
As shown in Figure 1, a kind of tobacco leaf thickness detecting method based on laser transmittance, said method comprising the steps of:
S1: choose some known thickness and the different Standard tobacco leaf production standard sample of thickness.
In specific implementation process, the concrete grammar of production standard sample comprises the following steps:
S11: choose some known thickness and the different Standard tobacco leaf of thickness;
S12: be cut to the square tobacco leaf that the length of side is 1-2cm after Standard tobacco leaf being removed master pulse and offshoot, be master sample.Thickness due to master pulse and offshoot is obviously greater than other positions of tobacco leaf, therefore removes master pulse and offshoot can ensure the smooth of tobacco leaf.
S2: respectively each master sample is placed in black box, adopts the laser of known strength incident from the side of master sample, adopts photodetector to receive the laser through master sample from the opposite side of master sample.
S3: the laser transmittance calculating each master sample, the laser transmittance of master sample equals the ratio through the laser intensity of master sample and the laser intensity of incident master sample, sets up the functional relation expression formula of tobacco leaf thickness and laser transmittance.
S4: tobacco leaf to be measured is placed in black box, adopts the laser identical with step S2 incident from the side of tobacco leaf to be measured, adopts photodetector to receive the laser through tobacco leaf to be measured from the opposite side of tobacco leaf to be measured.
In specific implementation process, get the tip of tobacco leaf to be measured, middle part and base portion respectively and be made into the square tobacco leaf that the length of side is 1-2cm, it is placed in black box respectively, adopt the laser identical with step S2 incident from the side of square tobacco leaf, adopt photodetector to receive the laser through tobacco leaf to be measured from the opposite side of square tobacco leaf.
S5: the laser transmittance calculating tobacco leaf to be measured, calculates the thickness of tobacco leaf to be measured by the functional relation expression formula of tobacco leaf thickness and laser transmittance.
In specific implementation process, the method calculating the laser transmittance of tobacco leaf to be measured is: the laser transmittance calculating the tip of tobacco leaf to be measured, middle part and base portion respectively, averages be the laser transmittance of tobacco leaf to be measured to it.The thickness of tobacco leaf tip, middle part and base portion may have fine distinction, therefore calculate respectively the tip of tobacco leaf to be measured, middle part and base portion laser transmittance and it is averaged can reflect the integral thickness of tobacco leaf to be measured.
The present invention discloses a kind of tobacco leaf thickness detecting method based on laser transmittance, choose some known thickness and the different Standard tobacco leaf production standard sample of thickness, master sample is placed in black box, detect and calculate the laser transmittance of each master sample, setting up the functional relation expression formula of tobacco leaf thickness and laser transmittance; Tobacco leaf to be measured is placed in black box, detects and calculate the laser transmittance of tobacco leaf to be measured, calculated the thickness of tobacco leaf to be measured by the functional relation expression formula of tobacco leaf thickness and laser transmittance.In black box, detect the interference can avoiding the light such as daylight, light, the present invention has relative to prior art the advantage that error is little, precision is high, speed is fast, efficiency is high.
The corresponding same or analogous parts of same or analogous label;
The term describing position relationship in accompanying drawing, only for exemplary illustration, can not be interpreted as the restriction to this patent;
Obviously, the above embodiment of the present invention is only for example of the present invention is clearly described, and is not the restriction to embodiments of the present invention.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.All any amendments done within the spirit and principles in the present invention, equivalent to replace and improvement etc., within the protection domain that all should be included in the claims in the present invention.
Claims (5)
1., based on a tobacco leaf thickness detecting method for laser transmittance, it is characterized in that, said method comprising the steps of:
S1: choose some known thickness and the different Standard tobacco leaf production standard sample of thickness;
S2: respectively each master sample is placed in black box, adopts the laser of known strength incident from the side of master sample, adopts photodetector to receive the laser through master sample from the opposite side of master sample;
S3: the laser transmittance calculating each master sample, sets up the functional relation expression formula of tobacco leaf thickness and laser transmittance;
S4: tobacco leaf to be measured is placed in black box, adopts the laser identical with step S2 incident from the side of tobacco leaf to be measured, adopts photodetector to receive the laser through tobacco leaf to be measured from the opposite side of tobacco leaf to be measured;
S5: the laser transmittance calculating tobacco leaf to be measured, calculates the thickness of tobacco leaf to be measured by the functional relation expression formula of tobacco leaf thickness and laser transmittance.
2. the tobacco leaf thickness detecting method based on laser transmittance according to claim 1, is characterized in that, in step S1, the concrete grammar of production standard sample comprises the following steps:
S11: choose some known thickness and the different Standard tobacco leaf of thickness;
S12: be cut to the square tobacco leaf that the length of side is 1-2cm after Standard tobacco leaf being removed master pulse and offshoot, be master sample.
3. the tobacco leaf thickness detecting method based on laser transmittance according to claim 1, it is characterized in that, in step S3, the concrete grammar calculating the laser transmittance of master sample is: the laser transmittance of master sample equals the ratio through the laser intensity of master sample and the laser intensity of incident master sample.
4. the tobacco leaf thickness detecting method based on laser transmittance according to claim 1, it is characterized in that, in step S4, get the tip of tobacco leaf to be measured, middle part and base portion respectively and be made into the square tobacco leaf that the length of side is 1-2cm, it is placed in black box respectively, adopt the laser identical with step S2 incident from the side of square tobacco leaf, adopt photodetector to receive the laser through tobacco leaf to be measured from the opposite side of square tobacco leaf.
5. the tobacco leaf thickness detecting method based on laser transmittance according to claim 4, it is characterized in that, in step S5, the method calculating the laser transmittance of tobacco leaf to be measured is: the laser transmittance calculating the tip of tobacco leaf to be measured, middle part and base portion respectively, averages be the laser transmittance of tobacco leaf to be measured to it.
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Cited By (2)
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CN105627936A (en) * | 2015-12-21 | 2016-06-01 | 中国科学院长春光学精密机械与物理研究所 | OD measurement-based quick metal film thickness measurement method |
CN108645314A (en) * | 2018-04-26 | 2018-10-12 | 上海创和亿电子科技发展有限公司 | Tobacco leaf sheet-like article identity digital measuring device and measurement method |
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CN101275825A (en) * | 2008-01-11 | 2008-10-01 | 浙江工业大学 | Measuring apparatus of wafer lower fluid film intermediate variable in CMP process |
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CN202661046U (en) * | 2012-05-28 | 2013-01-09 | 上海华虹Nec电子有限公司 | Device for measuring thickness of transmission electron microscope (TEM) sample |
CN202903141U (en) * | 2012-09-21 | 2013-04-24 | 深圳职业技术学院 | Novel film thickness detection device |
CN103090802A (en) * | 2013-02-02 | 2013-05-08 | 中国农业科学院烟草研究所 | Method for detecting thickness of tobacco leaf |
CN104792643A (en) * | 2015-01-27 | 2015-07-22 | 邸生才 | Feeding /perfuming material liquid content uniformity on-line measuring instrument and on-line control system |
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Patent Citations (10)
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US4899055A (en) * | 1988-05-12 | 1990-02-06 | Tencor Instruments | Thin film thickness measuring method |
CN101275825A (en) * | 2008-01-11 | 2008-10-01 | 浙江工业大学 | Measuring apparatus of wafer lower fluid film intermediate variable in CMP process |
CN201555564U (en) * | 2009-11-20 | 2010-08-18 | 无锡精工泰创科技有限公司 | Sheet polarization scattering laser thickness tester |
CN201653391U (en) * | 2010-04-16 | 2010-11-24 | 中国计量学院 | Tobacco thickness measurement instrument |
CN102095396A (en) * | 2011-01-19 | 2011-06-15 | 云南烟草科学研究院 | Method for measuring single-layer thickness and laminated thickness of tobacco leaves |
CN102607434A (en) * | 2012-03-08 | 2012-07-25 | 天津大学 | Oil slick thickness measuring device |
CN202661046U (en) * | 2012-05-28 | 2013-01-09 | 上海华虹Nec电子有限公司 | Device for measuring thickness of transmission electron microscope (TEM) sample |
CN202903141U (en) * | 2012-09-21 | 2013-04-24 | 深圳职业技术学院 | Novel film thickness detection device |
CN103090802A (en) * | 2013-02-02 | 2013-05-08 | 中国农业科学院烟草研究所 | Method for detecting thickness of tobacco leaf |
CN104792643A (en) * | 2015-01-27 | 2015-07-22 | 邸生才 | Feeding /perfuming material liquid content uniformity on-line measuring instrument and on-line control system |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN105627936A (en) * | 2015-12-21 | 2016-06-01 | 中国科学院长春光学精密机械与物理研究所 | OD measurement-based quick metal film thickness measurement method |
CN108645314A (en) * | 2018-04-26 | 2018-10-12 | 上海创和亿电子科技发展有限公司 | Tobacco leaf sheet-like article identity digital measuring device and measurement method |
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