CN108226082B - Calibration method for damping response time of moisture meter - Google Patents
Calibration method for damping response time of moisture meter Download PDFInfo
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- CN108226082B CN108226082B CN201611192038.9A CN201611192038A CN108226082B CN 108226082 B CN108226082 B CN 108226082B CN 201611192038 A CN201611192038 A CN 201611192038A CN 108226082 B CN108226082 B CN 108226082B
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- 230000004044 response Effects 0.000 title claims abstract description 47
- 238000013016 damping Methods 0.000 title claims abstract description 20
- 238000000034 method Methods 0.000 title claims abstract description 16
- 238000005259 measurement Methods 0.000 claims abstract description 11
- 238000004519 manufacturing process Methods 0.000 abstract description 12
- 239000000463 material Substances 0.000 abstract description 3
- 239000000523 sample Substances 0.000 description 7
- 238000012360 testing method Methods 0.000 description 4
- 241000208125 Nicotiana Species 0.000 description 3
- 235000002637 Nicotiana tabacum Nutrition 0.000 description 3
- 238000005070 sampling Methods 0.000 description 3
- 235000019504 cigarettes Nutrition 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 235000013405 beer Nutrition 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000012937 correction Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 235000019505 tobacco product Nutrition 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
- G01N21/25—Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands
- G01N21/31—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry
- G01N21/35—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using infrared light
- G01N21/3554—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using infrared light for determining moisture content
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
- G01N21/25—Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands
- G01N21/31—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry
- G01N21/35—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using infrared light
- G01N21/3563—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using infrared light for analysing solids; Preparation of samples therefor
Abstract
The invention provides a calibration method for damping response time of a moisture meter, which is used for determining a damping (response) time setting interval of an online infrared moisture meter on a production site and verifying whether the damping (response) time setting of the online infrared moisture meter on the production site is reasonable or not, so that data acquired by the online infrared moisture meter in the production process is closer to the true value of a material. The invention provides a technical scheme of a calibration method of damping response time of a moisture meter, which comprises the following steps: step one, preliminarily determining the response time of an online infrared moisture meter, wherein the time range is [8, 25s ]; step two, in the time range, the online moisture meter measures a calibration sample, displays the standard deviation of the moisture content and the display value of the first online moisture meter, and simultaneously obtains the measurement value of the first oven; and step three, judging whether the standard deviation of the moisture content is smaller than or equal to a preset value, and if not, reselecting the response time of the online infrared moisture meter.
Description
Technical Field
The invention relates to the technical field of tobacco, in particular to a calibration method for damping response time of a moisture meter.
Background
The detection and control of the water content in the production process flow of the cigarette factory is an important content. In the continuous development process of the tobacco industry, whether a new tobacco shred manufacturing workshop is built or an old product is replaced, the moisture content tester is used more and more.
The online infrared moisture meter has important function and significance in the test of the moisture content of the cigarette factory, and has the advantages of good stability, high precision, wide test range, non-contact test and the like. The TM710 moisture meter is widely used at present, the basic theory for measuring the tobacco products is the beer law, moisture has a strong absorption band to infrared radiation with specific wavelength, and the moisture content of a measured object can be obtained according to the change of light intensity after the measured object passes through.
Although the accuracy of the moisture content is directly influenced by the data acquisition and processing rules of the online infrared moisture meter, the setting of the damping (response) time of the online infrared moisture meter is not verified in the current production field.
Disclosure of Invention
The invention provides a calibration method for damping response time of a moisture meter, which is used for determining a damping (response) time setting interval of an online infrared moisture meter on a production site and verifying whether the damping (response) time setting of the online infrared moisture meter on the production site is reasonable or not, so that data acquired by the online infrared moisture meter in the production process is closer to the true value of a material.
The invention provides a technical scheme of a calibration method of damping response time of a moisture meter, which comprises the following steps:
step one, preliminarily determining the response time of an online infrared moisture meter, wherein the time range is [8, 25s ];
step two, in the time range, the online moisture meter measures a calibration sample, displays the standard deviation of the moisture content and the display value of the first online moisture meter, and simultaneously obtains the measurement value of the first oven;
and step three, judging whether the standard deviation of the moisture content is smaller than or equal to a preset value, and if not, reselecting the response time of the online infrared moisture meter.
Preferably, in the above technical solution,
the preset value is 0.2%.
Preferably, in the above technical solution,
the third step further comprises: if so, calculating the slope of the moisture meter according to the display value of the first online moisture meter and the measurement value of the first oven, judging whether the slope of the moisture meter is within a preset interval, if so, finally determining the response time of the online infrared moisture meter, and if not, reselecting the response time of the online infrared moisture meter.
Preferably, in the above technical solution,
the preset interval is that k is more than 0.97 and less than 1.03, and k is the slope of the moisture meter.
Preferably, in the above technical solution,
the first step specifically comprises: and acquiring a second online moisture meter display value and a second oven measurement value of the experimental sample under a plurality of time nodes, comparing and analyzing the second online moisture meter display value and the second oven measurement value, and preliminarily determining that the time range [8, 25s ] is the response time of the online infrared moisture meter.
Preferably, in the above technical solution,
the plurality of time nodes comprise the time nodes comprising 8s, 10s, 15s, 20s and 25s, and 8s is the lowest response time of the online infrared moisture meter.
Preferably, in the above technical solution,
the first step specifically comprises: and (3) acquiring second online moisture meter display values and second oven measurement values of the experimental samples under 8s, 10s, 15s, 20s and 25s, wherein when the time range is [8, 25s ], the error is not more than 0.3%, and the time range [8, 25s) is preliminarily determined as the response time of the online infrared moisture meter.
Preferably, in the above technical solution,
the calibration method further comprises: and setting a display limit value of the online infrared moisture meter, and starting an alarm system when the display limit value is reached.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the prior art descriptions will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
Fig. 1 is a flowchart of a calibration method for damping response time of a moisture meter according to an embodiment of the present invention.
Detailed Description
The invention provides a calibration method for damping response time of a moisture meter, which is used for determining a damping (response) time setting interval of an online infrared moisture meter on a production site and verifying whether the damping (response) time setting of the online infrared moisture meter on the production site is reasonable or not, so that data acquired by the online infrared moisture meter in the production process is closer to a true value of a material.
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without making any creative effort based on the embodiments in the present invention, belong to the protection scope of the present invention.
Referring to fig. 1, a technical solution of the calibration method for damping response time of a moisture meter according to the present invention includes:
101. preliminarily determining the response time of the online infrared moisture meter, wherein the time range is [8, 25s ];
in this embodiment, 101 specifically includes: and acquiring a second online moisture meter display value and a second oven measured value of the experimental sample under a plurality of time nodes, comparing and analyzing the second online moisture meter display value and the second oven measured value, and preliminarily determining the time range [8, 25s ] as the response time of the online infrared moisture meter. Further, the plurality of time nodes comprise 8s, 10s, 15s, 20s and 25s, 8s is the lowest response time of the online infrared moisture meter, when the time range is [8, 25s), the error is not more than 0.3%, and the time range [8, 25s) is preliminarily determined as the response time of the online infrared moisture meter.
The calibration method further comprises: and setting a display limit value of the online infrared moisture meter, and starting an alarm system when the display limit value is reached.
As can be seen from the above description, step 101 includes the following steps:
A. setting the parameters of an online infrared moisture meter: the slope is 1, the alarm upper limit is set to 16%, the alarm lower limit is set to 2%, the correction value is fixed, and the name of the probe and the name of the measurement component are fixed.
B. And setting the lowest value of the response time as 8S, collecting the experimental sample by using the sampling function of the operation interface, the sampling remote-reading meter or the handheld operation interface, and recording the measurement average value of the experimental sample. It should be noted that, in the laboratory, the number of samples is not less than 10.
C. Similarly, sampling tests were performed at response times of 10s, 15s, 20s, and 25s, respectively.
D. The results obtained at each response time were recorded and calculated using a table similar to the following:
E. and obtaining the minimum error mean value at 8S and the maximum error mean value exceeding 0.3% at 25S according to the record and data of the table, thereby determining the response time setting range of the online infrared moisture meter to be [8, 25 ].
102. In a time range, measuring a calibration sample by using an online infrared moisture meter, displaying a standard deviation of the moisture content and a display value of a first online moisture meter, and simultaneously acquiring a measured value of a first drying oven;
103. and judging whether the standard deviation of the moisture content is less than or equal to a preset value, if not, reselecting the response time of the online infrared moisture meter.
In this embodiment, it is determined whether the standard deviation of the moisture content displayed by the online infrared moisture meter is less than or equal to 0.2%, if the standard deviation is greater than 0.2%, step 104 is executed, and step 104 is to reselect the response time of the online infrared moisture meter. And further, if the value is less than or equal to 0.2%, calculating the slope of the moisture meter according to the display value of the first online moisture meter and the measured value of the first oven, and judging whether the slope of the moisture meter is in a preset interval, wherein k is more than 0.97 and less than 1.03(k is the slope of the moisture meter), if so, finally determining the response time of the online infrared moisture meter, and if not, reselecting the response time of the online infrared moisture meter.
The above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (3)
1. A calibration method for damping response time of a moisture meter is characterized by comprising the following steps:
acquiring a second online moisture meter display value and a second oven measured value of an experimental sample under a plurality of time nodes, comparing and analyzing the second online moisture meter display value and the second oven measured value, and preliminarily determining a time range [8, 25s ] as the response time of an online infrared moisture meter;
step two, in the time range, the online infrared moisture meter measures a calibration sample, displays the standard deviation of the moisture content and the display value of the first online moisture meter, and simultaneously obtains the measurement value of the first oven;
step three, judging whether the standard deviation of the moisture content is smaller than or equal to a preset value, if not, reselecting the response time of the online infrared moisture meter, if so, calculating the slope of the moisture meter according to the display value of the first online moisture meter and the measurement value of the first oven, judging whether the slope of the moisture meter is in a preset interval, if so, finally determining the response time of the online infrared moisture meter, and if not, reselecting the response time of the online infrared moisture meter, wherein the preset interval is that k is greater than 0.97 and less than 1.03, and k is the slope of the moisture meter;
the first step specifically comprises: and (3) acquiring second online moisture meter display values and second oven measurement values of the experimental samples under 8s, 10s, 15s, 20s and 25s, wherein when the time range is [8, 25s ], the error is not more than 0.3%, and the time range [8, 25s) is preliminarily determined as the response time of the online infrared moisture meter.
2. The method of calibrating damping response time of a moisture meter of claim 1, wherein the plurality of time nodes comprises 8s, 10s, 15s, 20s, 25s, 8s being the lowest response time of an online infrared moisture meter.
3. The method of calibrating a damping response time of a moisture meter of claim 1, further comprising: and setting a display limit value of the online infrared moisture meter, and starting an alarm system when the display value of the online infrared moisture meter reaches the display limit value.
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| CN201611192038.9A CN108226082B (en) | 2016-12-21 | 2016-12-21 | Calibration method for damping response time of moisture meter |
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| CN201611192038.9A CN108226082B (en) | 2016-12-21 | 2016-12-21 | Calibration method for damping response time of moisture meter |
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| CN108226082B true CN108226082B (en) | 2022-07-26 |
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| CN112255189A (en) * | 2020-10-12 | 2021-01-22 | 河南中烟工业有限责任公司 | Tobacco material online moisture meter adjusting method and device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101126693B (en) * | 2006-08-18 | 2010-12-08 | 湖南中烟工业有限责任公司 | Method for calibrating drying box for determining tobacco moisture and method for determining tobacco moisture |
| CN102095831A (en) * | 2010-06-24 | 2011-06-15 | 龙岩烟草工业有限责任公司 | Moisture meter management method and system |
| CN102183474A (en) * | 2011-02-15 | 2011-09-14 | 北京首钢自动化信息技术有限公司 | Calibration method of infrared moisture meter |
| CN105029672B (en) * | 2015-06-24 | 2017-03-22 | 广西中烟工业有限责任公司 | Precise characterization method for water at outlet of baked cut tobacco |
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