CN1773270A - Method for measuring textile fiber moisture - Google Patents
Method for measuring textile fiber moisture Download PDFInfo
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- CN1773270A CN1773270A CN 200510032225 CN200510032225A CN1773270A CN 1773270 A CN1773270 A CN 1773270A CN 200510032225 CN200510032225 CN 200510032225 CN 200510032225 A CN200510032225 A CN 200510032225A CN 1773270 A CN1773270 A CN 1773270A
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Abstract
The method for measuring textile fibre moisture content includes the following steps: preparing test equipment; utilizing plate sensor and AG test signal to collect the information of fibre moisture content; utilizing analog computer to amplify the collected AC information, and make rectification, filtration and A/D conversion so as to obtain digital information, in general computer utilizing special software to analyze and process said digital signal, finally outputting the test result.
Description
[technical field]
The present invention relates to a kind of detection method, is a kind of method of measuring moisture in textile fibre specifically.
[background technology]
The water percentage of textile fibres directly influences the quality of weight, processing characteristics and the textile product of fiber.Final mass in textile enterprise for carrying out smoothly of guarantee producing and textile all must be carried out moisture measurement to fibrous raw material, semi-manufacture and finished product in whole process.For natural fiber, when fiber purchase, storage, also must test the moisture of textile fibres.
At present, ripe both at home and abroad fiber moisture method of testing has two kinds of Oven Method and direct current resistance hygrometry.The advantage of first method is that test result is accurate, stable, and defective is power consumption, time-consuming, is unfavorable for that the production scene is tested fast and use at fiber purchasing department scene; The advantage of second method is that test speed is fast, and is easy to use, and defective is that stable testing is poor, error is big, versatility is low.Vast textile enterprise wishes to have very much that a kind of test speed is fast, test result accurate, stable, energy-conservation, moisture in textile fibre method of testing that versatility is good.
[summary of the invention]
In order to overcome the defective of existing moisture in textile fibre method of testing, satisfy the requirement of vast textile enterprise, the present invention found through experiments fibrous material ac-excited following after electric conductivity and dielectricity further investigation to fibrous material, have the trap effect of ac conduction.This effect shows: when the frequency of pumping signal is in the 10KHz left and right sides, the electric conductivity of fibrous material only with fiber in moisture closely related.So propose the method that employing ac impedance measurement technology is measured the moisture of fibrous material.Through verification experimental verification and error analysis, this method be a kind of energy fast, accurately, and working stability, energy-conservation moisture in textile fibre method of testing.For solving its technical matters, measuring method of the present invention comprises the steps:
1, the preparation of testing apparatus: select a polar-plate-type sensor and AC signal generator, one of miniature analogue computer, one of multi-purpose computer;
2, gather fiber moisture information: fiber sample to be measured is put between the two-plate of polar-plate-type sensor, the frequency that AC signal generator produces is that the output signal of 10KHz adds up on the pole plate, obtains the electric signal of reflection fiber moisture on another piece pole plate;
3, signal Processing: to the electric signal of the reflection fiber moisture gathered with analog computer amplify, rectification, filtering, A/D be converted to digital signal;
4, data analysis is handled: computing machine is accepted the digital signal of ADC output, and with special software the input data is carried out analyzing and processing, obtains the data of the water percentage of fiber sample;
5, test result output: the test result output intent can be selected as required, and available LCDs or LCD show, also can export by printer prints.
The invention has the beneficial effects as follows: what 1, adopt because of this method is AC signal, can solve the pole plate polarization of direct current resistance hygrometry existence and the testing tool poor stability that causes because of the fiber direct current resistance is very big, the problem of versatility difference, thereby accurate, the stable advantage of test result is arranged;
2,, can avoid Oven Method power consumption, time-consuming defective because the present invention adopts the AC impedance hygrometry and with computing machine test data calculated, handled, and test speed is fast;
3, to the fiber of different cultivars, available different data processor is analyzed, is handled test data, so this method has versatility;
4, constitute tester because of available electron components and parts of the present invention, single-chip microcomputer, therefore have characteristics such as volume is little, in light weight, simple to operate, can be directly used in the fast detecting of production scene and the scene of fiber purchasing department and use; Its test index can satisfy the requirement to fiber moisture of textile enterprise and relevant departments.
[description of drawings]
Fig. 1 is the used main program flow chart of the present invention.
Fig. 2 is that material therefor of the present invention is handled subroutine flow chart.
Fig. 3 is the used temperature compensation subroutine flow chart of the present invention.
Among the figure: 4FH---temperature compensation sign: 4FH=0 when not carrying out temperature compensation; When carrying out temperature compensation, 4FH=1.
50H---the positive and negative compensation sign of temperature: 50H=0 just compensates: 50H=1, bear compensation.
The difference of 51H---environment temperature and design temperature.
[embodiment]
The present invention is further illustrated below in conjunction with embodiment:
1, the preparation of testing apparatus: preparation polar-plate-type sensor, DF1010 signal generator, an XMN-2 pattern are intended one in computing machine, one of multi-purpose computer;
2, gather fiber moisture information: the fiber sample to be measured of constant weight is put between the two-plate of polar-plate-type sensor uniformly, consistance, repeatability for the warranty test result, must guarantee that the real contact area of fiber and pole plate is constant, so adopted spring loaded mode, spring pressure is chosen 750N.Keep sample weight certain during each the test, make the compression deformation of the spring of roof pressure on movable pole plate keep certain, the real contact area of fiber and pole plate also keeps certain in the time of then can guaranteeing to test substantially at every turn.The effective value of signal generator output is that 5V, frequency are that the sine wave signal of 10kHz adds up on the pole plate, obtains the electric signal of reaction fiber moisture on another piece pole plate.
3, signal Processing: intend computing machine with the XMN-2 pattern and make up the current rectifying and wave filtering circuit that proportional amplifier and output signal are positive " absolute value circuit ", to the electric signal of on another piece pole plate of sensor, obtaining reaction fiber moisture amplify, rectification, filtering, and give ADC0809 and be converted to digital signal;
4, data analysis is handled: computing machine is accepted the digital signal of ADC output, and with special software the input data is carried out analyzing and processing, obtains the data of the water percentage of fiber sample;
The foundation of this special software: to the fiber of a certain kind under the certain state of its water percentage, with said method repeatedly, repeatedly test, the mean value of getting test data is designated as the corresponding data of this fiber under this water percentage state; Change the water percentage of this fiber, repeat above-mentioned steps, a large amount of average data that obtains is by experiment analyzed with regression analysis, obtain reflecting the regression equation of this fiber moisture, and and the testing result of Oven Method compare, revise regression equation.According to the special software that this equation is write, the output data of ADC is handled, can obtain meeting the data of the fiber moisture that engineering requires.
The regression equation of special software foundation of the present invention:
1. saw ginned cotton, the regression equation of percentage of impurity＜2.0% o'clock
2. roller ginned cotton, the regression equation of percentage of impurity＞2.0% o'clock
3. the regression equation of ramee
4. the regression equation of viscose rayon
5, test result output: the test result output intent can be selected as required, and available LCDs or LCD show, also can export by printer prints.
Claims (4)
1, a kind of method of measuring moisture in textile fibre is characterized in that this measuring method comprises the steps: the 1. preparation of testing apparatus: select a polar-plate-type sensor and AC signal generator, one of miniature analogue computer, one of multi-purpose computer;
2. gather fiber moisture information: fiber sample to be measured is put between the two-plate of polar-plate-type sensor, the frequency that AC signal generator produces is that the output signal of 10KHz adds up on the pole plate, obtains the electric signal of reflection fiber moisture on another piece pole plate;
3. signal Processing: to the electric signal of the reflection fiber moisture gathered with analog computer amplify, rectification, filtering, A/D be converted to digital signal;
4. data analysis is handled: computing machine is accepted the digital signal of ADC output, and with special software the input data is carried out analyzing and processing, obtains the data of the water percentage of fiber sample;
5. test result output: the test result output intent can be selected as required, and available LCDs or LCD show, also can export by printer prints.
2, method according to claim 1, it is characterized in that: described collection fiber moisture information, be that fiber sample to be measured is put between the two-plate of polar-plate-type sensor, the frequency that AC signal generator produces is that the output signal of 10KHz adds up on the pole plate, obtains the electric signal of reflection fiber moisture on another piece pole plate.
3, method according to claim 1 is characterized in that: described information processing, be with the XMN-Z pattern intend that computing machine amplifies, rectification, filtering, A/D be converted to digital signal.
4, method according to claim 1, it is characterized in that: data analysis is to handle by special software in multi-purpose computer in handling, this special software is with regression analysis experimental data to be analyzed, obtain reflecting the regression equation of this fiber moisture, and and the testing result of Oven Method compare, revise regression equation, the special software of writing out with revised regression equation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510032225 CN1773270A (en) | 2005-09-30 | 2005-09-30 | Method for measuring textile fiber moisture |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510032225 CN1773270A (en) | 2005-09-30 | 2005-09-30 | Method for measuring textile fiber moisture |
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| Publication Number | Publication Date |
|---|---|
| CN1773270A true CN1773270A (en) | 2006-05-17 |
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|---|---|---|---|
| CN 200510032225 Pending CN1773270A (en) | 2005-09-30 | 2005-09-30 | Method for measuring textile fiber moisture |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103424437A (en) * | 2013-08-24 | 2013-12-04 | 西北农林科技大学 | Method and device for detecting straw moisture through impedance method |
-
2005
- 2005-09-30 CN CN 200510032225 patent/CN1773270A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103424437A (en) * | 2013-08-24 | 2013-12-04 | 西北农林科技大学 | Method and device for detecting straw moisture through impedance method |
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