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Method for detecting moisture content of crude tobacco bales by using microwave moisture meter on line

A technology of moisture meter and cigarette pack, which is applied in the direction of using microwave to test moisture content, can solve the problems of small sample processing capacity, poor representativeness of moisture content value, long time for moisture detection by oven method, etc., and achieve the effect of simple online detection.

Inactive Publication Date: 2013-10-02
BEIJING ZIDONG TECH
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  • Abstract
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Problems solved by technology

[0004] The oven method takes a long time to detect moisture, the amount of sample processing is small, and the representativeness of the measured moisture content is poor, and it is impossible to find raw cigarette packs with large wet masses and easy mildew

Method used

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  • Method for detecting moisture content of crude tobacco bales by using microwave moisture meter on line
  • Method for detecting moisture content of crude tobacco bales by using microwave moisture meter on line
  • Method for detecting moisture content of crude tobacco bales by using microwave moisture meter on line

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specific Embodiment

[0040] 1 Establishment of moisture detection model:

[0041] 1.1 Moisture content:

[0042] The moisture content is the water content (H 2 O) ratio. Such as tobacco leaf is a solid substance, it contains water (H 2 O) ratio is called the moisture content of tobacco leaves. The formula for calculating the percentage moisture content of a substance is as follows:

[0043]

[0044] Where: H 2 O is not a unit, it means water molecule.

[0045] 1.2 Modeling and sampling:

[0046] Such as figure 1 , 2 As shown in , 3, after the microwave moisture meter runs stably, carry out modeling and sampling, select 9 points from the upper and lower surfaces of the cigarette pack, take 1 cigarette at each point, a total of 18 sticks, take 4 pieces of tobacco leaves from each stick, grind After powdering, mix evenly, and use an oven to measure the moisture. In the same way, select 9 points in the middle layer of the cigarette bale, extract about h=20CM thick tobacco leaves at each p...

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Abstract

The invention discloses a method for detecting moisture content of crude tobacco bales by using a microwave moisture meter on line. The microwave moisture meter is utilized for detecting the moisture content of the crude tobacco bales on line through models as follows: M displayed value is a sum of phi P and Q, wherein in the formula, the M displayed value represents a moisture content value measured by the microwave moisture meter; phi represents a corresponding moisture content signal value measured by the microwave moisture meter; P represents a calibration parameter 1 of the microwave moisture meter; Q represents a calibration parameter 2 of the microwave moisture meter; and values of P and Q are measured through an oven testing method and the microwave moisture meter, then compared and calculated with a least square method according to points, corresponding to the phi, values of a plurality of tobacco bales. The method can accurately, rapidly and simply detect the moisture content of the crude tobacco bales on line.

Description

technical field [0001] The invention relates to a method for detecting the moisture content of raw tobacco bale, in particular to a method for online detection of the moisture content of raw tobacco bale by using a microwave moisture meter. Background technique [0002] In the prior art, the moisture detection and sampling method of raw tobacco packs before storage: usually the sampling rate is 1% to 3%, that is, 1 pack to 3 packs of raw cigarettes are extracted for every 100 packs of raw cigarettes, and the upper part of each pack of raw cigarettes is extracted , a few handfuls of tobacco in the middle, and a few handfuls of tobacco in the lower part, after being pulverized by a cyclone mill, the moisture content was measured by the standard oven method. [0003] The problems existing in the prior art are: [0004] The oven method takes a long time to detect moisture, and the amount of sample processing is small. The representativeness of the measured moisture content is p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N22/04
Inventor 苗向阳郑安崔焰张健黄振军张其龙杜阅光符再德曾中李名城李果胡涌付航杜显维崔建军矣跃平
Owner BEIJING ZIDONG TECH
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