CN1195220C - Method and system for measuring qaulity of multi component yarns - Google Patents
Method and system for measuring qaulity of multi component yarns Download PDFInfo
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- CN1195220C CN1195220C CN 03129518 CN03129518A CN1195220C CN 1195220 C CN1195220 C CN 1195220C CN 03129518 CN03129518 CN 03129518 CN 03129518 A CN03129518 A CN 03129518A CN 1195220 C CN1195220 C CN 1195220C
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- 238000001514 detection method Methods 0.000 claims abstract description 40
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- 239000013078 crystal Substances 0.000 claims description 10
- 238000005259 measurement Methods 0.000 claims description 5
- 239000012535 impurity Substances 0.000 abstract description 8
- 238000004519 manufacturing process Methods 0.000 abstract description 8
- 239000004744 fabric Substances 0.000 abstract description 4
- 238000009826 distribution Methods 0.000 abstract description 2
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- 230000026676 system process Effects 0.000 abstract 1
- 229920000742 Cotton Polymers 0.000 description 10
- 239000000203 mixture Substances 0.000 description 7
- 239000000835 fiber Substances 0.000 description 6
- 239000002131 composite material Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
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- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000003990 capacitor Substances 0.000 description 1
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Abstract
一种测量多元纱线品质的系统，包括张力恒定装置和速度恒定装置，纱线置于检测区域中，该检测区域中设有光电检测装置和电容检测装置，并且分别通过计算机接口连接到设有信号处理程序的计算机，该光电检测装置是经电流驱动单元驱动的红外光源，其发射的红外光经光学系统准直后，将被测多元纱线的轮廓投射到红外光接收管上，并经过数/模转换器转换成数字信号，由计算机接口传输到计算机。系统中计算机将检测到的多元纱线的品质信号进行数据处理，输出多元纱线的线径及其线径不匀率、成分配比以及其配比不匀率、杂质、疵点、粗节、细节、棉结等品质属性，以及变异曲线和波谱图等，以指导纱线和织物的生产。
A system for measuring the quality of multiple yarns, including a constant tension device and a constant speed device, the yarn is placed in a detection area, a photoelectric detection device and a capacitance detection device are installed in the detection area, and are respectively connected to a device through a computer interface. The computer of the signal processing program. The photoelectric detection device is an infrared light source driven by a current drive unit. After the infrared light emitted by it is collimated by the optical system, the outline of the multi-component yarn to be tested is projected onto the infrared light receiving tube, and passed through The digital/analog converter converts the digital signal, which is transmitted to the computer by the computer interface. The computer in the system processes the detected quality signal of the multi-component yarn, and outputs the wire diameter and its unevenness of wire diameter, component distribution ratio and its ratio unevenness, impurities, defects, thick places, Quality attributes such as fine details and neps, as well as variation curves and spectrograms, etc., to guide yarn and fabric production.
Description
Technical field:
The present invention relates to the quality of capacitance method Measuring Object, the formation and the variation of composition, relate to diameter and variation when adopting optical means metering movement of objects again, is a kind of system that detects polynary yarn quality.
Background technology:
The condenser type bar dry measure instrument of Switzerland Uster company has been widely used in the yarn diameter of cotton spinning industry and has measured, and the wave spectrogram that calculates therefrom is used to instruct the production of yarn.The theoretical foundation of this method is so-called " mass conservation principle ", and promptly when the yarn qualities of the unit length between the capacitor two-plate was invariable, measured capacitance also remained unchanged, thereby the diameter of extrapolating yarn is constant.Yet this measuring method has its intrinsic defective:
1, when having some cotton knot in the yarn, the apparent diameter of yarn can not change, and marked change may take place its capacitance, thus the result who leads to errors.
2, the fiber that in cotton thread, is mingled with other kinds, during as fibers such as polypropylene fibre, acrylic fibers, the apparent diameter of yarn can not change, but because the specific inductive capacity of impurity fiber is different from yarn, marked change may take place in the capacitance that at this moment records, the measurement result that this also can lead to errors.
3, for the yarn of blending, because the unevenness of mixing, specific inductive capacity is also different everywhere, measures less than correct yarn diameter and changing value thereof with condenser type bar dry measure instrument.
The electronic blackboard of U.S. Lawson-Hemphill company adopts the visible light behind the collimation that the profile of tested yarn is projected on the line array CCD measuring the diameter and the variation thereof of yarn, thus the cloth cover computer simulation after yarn carried out ranking and be made into cloth.The said firm is in patent of invention (publication number: CN1174607A, open day: on February 25th, 1998), be entitled as " system and method that is used for electronically displaying yarn qualities " of China's application.The weak point of this measuring method is:
1, adopts high speed linear array CCD camera, complex circuit, overall price costliness.
2, because the surface of yarn is a diffuse reflector, the visible light that adopts direct current supply is as light source, and the result of measurement is subject to the interference of extraneous parasitic light.
The composition distribution ratio and the proportioning irregularity thereof that 3, can not reflect scribbled.
Summary of the invention:
The technical problem to be solved in the present invention provides a kind of system that detects polynary yarn quality.
The technical scheme that the present invention solves its technical matters employing is:
A kind of system of measuring polynary yarn quality, comprise constant tension device and constant airspeed device, yarn places surveyed area, be provided with photoelectric detection system and capacitance detecting device in this surveyed area, and be connected to the computing machine that is provided with signal handler by first and second computer interface respectively, it is characterized in that: this photoelectric detection system comprises through the infrared light supply of current drives unit drives, infrared receiving tube, optical system, frequency-selecting amplification and detection unit and D/A; The infrared light of infrared light supply emission is behind the optical system collimation, the profile of tested polynary yarn is projected on the infrared light receiving tube, the electric signal of infrared receiving tube output is behind frequency-selecting amplification and detection unit, convert digital signal to through D/A, be transferred to computing machine by first computer interface.
The infrared light supply of this photoelectric detection system is made up of crystal oscillator, driver element, infraluminescence pipe, second infrared receiving tube and the second frequency-selecting amplification and detection unit, the infraluminescence pipe is by the AC driving unit drives of crystal oscillator excitation, the light signal that second infrared receiving tube receives is behind the second frequency-selecting amplification and detection unit, the drive current of control AC driving unit output makes the infrared light power of infraluminescence pipe emission keep constant; The light signal that second infrared receiving tube receives also is transferred to computing machine by first computer interface after the second frequency-selecting amplification and detection unit and second A/D converter convert digital signal to.
The infrared light supply of this photoelectric detection system is made up of driver element, infraluminescence pipe, second infrared receiving tube and amplifying unit, the infraluminescence pipe is by the direct drive unit drives, the light signal that second infrared receiving tube receives is behind amplifying unit, the drive current of control direct drive unit output makes the infrared light power of infraluminescence pipe emission keep constant; The light signal that second infrared receiving tube receives also is transferred to computing machine by first computer interface after amplifying unit and second A/D converter convert digital signal to.
This capacitance detecting device is on the pole plate of high-frequency signal through being added to plate condenser behind the driver element of its crystal oscillator output; The polynary yarn that is in constant-tension and constant speed state passes between the two-plate of plate condenser, make the capacitance of plate condenser change, thereby the phase place of the high-frequency signal that causes changes thereupon, the high-frequency signal of phase change and the base reference signal while input phase difference detecting unit of driver element output take place, its output is transformed into digital signal through the 3rd A/D converter, is transferred to computing machine by second computer interface then.
Beneficial effect of the present invention is:
The line footpath and the line footpath irregularity that 1, can reflect polynary yarn.
The composition proportion and the proportioning irregularity that 2, can reflect polynary yarn.
3, the impurity component in the energy perception yarn changes and distributes.
4, can carry out overall treatment to the data of infrared photoelectric sensor and capacitive transducer collection by computing machine after, obtain the variation curve and the wave spectrogram of tested polynary yarn, to instruct the production of yarn and fabric.
5, the set composite of being made up of Photoelectric Detection and capacitance detecting can be used for the heterotypic fibre that is mingled with in impurity, the especially cotton yarn in the online detection cotton yarn in the yarn production line, to improve the quality of products, reduces consuming, and saves production cost.
6, the set composite of being made up of Photoelectric Detection and capacitance detecting can be used for the composition proportion and the variation of the polynary yarn of online detection in the polynary yarn production line.
Description of drawings:
Fig. 1 is a kind of structural representation that detects the system of polynary yarn quality of the present invention.
Fig. 2 is a mid-infrared light electric detection means theory diagram of the present invention.
Fig. 3 is a capacitance detecting device theory diagram among the present invention.
Fig. 4 is flow chart of data processing figure among the present invention.
Embodiment:
Below in conjunction with accompanying drawing embodiments of the present invention are described further.
See also Fig. 1, polynary yarn 5 passes the surveyed area of being made up of photoelectric detection system 2 and capacitance detecting device 3 behind constant tension controller 1, is urged to the linear velocity of setting again by constant airspeed device 4.At this moment, yarn is in constant-tension and constant speed state in surveyed area.Photoelectric detection system 2 in the surveyed area obtains the diameter of polynary yarn and the information input computing machine 6 of variation thereof; Simultaneously, also import computing machine 6 after the capacitance detecting device 3 in the surveyed area obtains the capacitance information relevant with proportioning with the diameter of polynary yarn.In addition, the output of the constant airspeed device 4 of constant controller 1 also all is connected to computing machine 6.6 pairs of data of computing machine are handled, metric attributes such as the line footpath of the polynary yarn that calculates and line footpath irregularity, composition proportion and proportioning irregularity thereof, impurity, fault, slubbing, details, cotton knot, and variation curve and wave spectrogram etc., export to and show 7 or print 8, also can be connected to network or other equipment together via input/output interface 9.
Consult Fig. 2, said photoelectric detection system 2, its infrared light supply 20 is made up of crystal oscillator 201, driver element 202, infrared transmitting tube 204 and the second frequency-selecting amplification and detection unit 203.Infraluminescence pipe 204 is to be driven by the AC driving unit 202 that crystal oscillator 201 encourages.The light signal that second infrared receiving tube 205 receives is behind the second frequency-selecting amplification and detection unit 203, and the drive current of control AC driving unit 202 outputs makes the infrared light power of infraluminescence pipe 204 emissions keep constant.The infrared light of infraluminescence pipe 204 emission projects the profile of tested polynary yarn 5 on the infrared receiving tube 208 behind optical system 207 collimations.The electric signal of infrared receiving tube 208 outputs converts digital signal to through A/D converter 210 behind frequency-selecting amplification and detection unit 209, be transferred to computing machine 6 by first computer interface 211.Simultaneously, the light signal that second infrared receiving tube 205 receives is after the second frequency-selecting amplification and detection unit 203 and second A/D converter 206 convert digital signal to, also be transferred to computing machine 6 by first computer interface 211, this reference signal is used for eliminating because of system parameter variations and causes measuring error.The theory diagram of the photoelectric detection system that constitutes by the infrared light supply of direct drive and shown in Figure 2 similar, cancellation crystal oscillator 201 in Fig. 2 only, and change frequency-selecting amplification and detection unit 203 and 209 into amplifying unit.
Consult Fig. 3, said capacitance detecting device 3, the high-frequency signal of its crystal oscillator 302 outputs is through being added on the pole plate of plate condenser 303 behind the driver element 301.The polynary yarn 5 that is in constant-tension and constant speed state passes between the two-plate of plate condenser 303, make the capacitance of plate condenser 303 change, thereby the phase place of the high-frequency signal that causes changes thereupon.The high-frequency signal of phase change and the base reference signal while input phase difference detecting unit 304 of driver element 301 outputs take place, and its output is transformed into digital signal through the 3rd A/D converter, is transferred to computing machine 6 by second computer interface 306 then.
See also Fig. 4, the data acquisition and the signal processing flow of said computing machine 6 are: gather tension force and speed 10, gather diameter and capacitance 11, data 12 such as calculated diameter, proportioning, impurity, fault, thick knot, thin knot, cotton knot, calculate line footpath irregularity, proportioning irregularity, variation curve and wave spectrogram etc. 13, and output line footpath and line footpath irregularity, composition proportion and proportioning irregularity thereof, impurity, fault, thick knot, thin knot, cotton knot, variation curve figure and wave spectrogram etc. 14 thereof.
Set composite and signal processing method that said photoelectric detection system 2 of the present invention and capacitance detecting device 3 are formed also are a kind of method and apparatus of the heterotypic fibre that is mingled with in impurity, the especially cotton yarn in the online detection cotton yarn in yarn production; Or a kind of in polynary yarn production the composition proportion of the polynary yarn of online detection and the method and apparatus of variation.
Claims (4)
1, a kind of system of measuring polynary yarn quality, comprise constant tension device (1) and constant airspeed device (4), yarn (5) places surveyed area, be provided with photoelectric detection system (2) and capacitance detecting device (3) in this surveyed area, and respectively by first, two computer interfaces (211), (306) be connected to the computing machine (6) that is provided with signal handler, it is characterized in that: this photoelectric detection system (2) comprises the infrared light supply (20) that drives through current drives unit (202), infrared receiving tube (208), optical system (207), frequency-selecting amplification and detection unit (209) and A/D converter (210); The infrared light of infrared light supply (20) emission is behind optical system (207) collimation, the profile of tested polynary yarn (5) is projected on the infrared light receiving tube (208), the electric signal of infrared receiving tube (208) output is behind frequency-selecting amplification and detection unit (209), convert digital signal to through A/D converter (210), be transferred to computing machine (6) by first computer interface (211).
2, the system of the polynary yarn quality of measurement according to claim 1, it is characterized in that: the infrared light supply (20) of this photoelectric detection system (2) is by crystal oscillator (201), driver element (202), infraluminescence pipe (204), second infrared receiving tube (205) and the second frequency-selecting amplification and detection unit (203) are formed, infraluminescence pipe (204) is to be driven by the AC driving unit (202) that crystal oscillator (201) encourages, the light signal that second infrared receiving tube (205) receives is behind the second frequency-selecting amplification and detection unit (203), the drive current of control AC driving unit (202) output makes the infrared light power of infraluminescence pipe (204) emission keep constant; The light signal that second infrared receiving tube (205) receives also is transferred to computing machine (6) by first computer interface (211) after the second frequency-selecting amplification and detection unit (203) and second A/D converter (206) convert digital signal to.
3, the system of the polynary yarn quality of measurement according to claim 1, it is characterized in that: the infrared light supply of this photoelectric detection system (2) is made up of driver element, infraluminescence pipe, second infrared receiving tube and amplifying unit, the infraluminescence pipe is by the direct drive unit drives, the light signal that second infrared receiving tube receives is behind amplifying unit, the drive current of control direct drive unit output makes the infrared light power of infraluminescence pipe emission keep constant; The light signal that second infrared receiving tube receives also is transferred to computing machine by first computer interface after amplifying unit and second A/D converter convert digital signal to.
4, according to the system of claim 1 or the polynary yarn quality of 2 or 3 described measurements, it is characterized in that: this capacitance detecting device (3), the high-frequency signal of its crystal oscillator (302) output is added on the pole plate of plate condenser (303) behind driver element (301); The polynary yarn (5) that is in constant-tension and constant speed state passes between the two-plate of plate condenser (303), make the capacitance of plate condenser (303) change, thereby the phase place of the high-frequency signal that causes changes thereupon, the high-frequency signal of phase change and the base reference signal while input phase difference detecting unit (304) of driver element (301) output take place, its output is transformed into digital signal through the 3rd A/D converter (305), is transferred to computing machine (6) by second computer interface (306) then.
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| Application Number | Priority Date | Filing Date | Title |
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| CN 03129518 CN1195220C (en) | 2003-06-26 | 2003-06-26 | Method and system for measuring qaulity of multi component yarns |
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| Application Number | Priority Date | Filing Date | Title |
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| CN 03129518 CN1195220C (en) | 2003-06-26 | 2003-06-26 | Method and system for measuring qaulity of multi component yarns |
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| CN1462879A CN1462879A (en) | 2003-12-24 |
| CN1195220C true CN1195220C (en) | 2005-03-30 |
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Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100337109C (en) * | 2003-12-30 | 2007-09-12 | 杨大利 | Digital image analysis method for yarn appearance quality |
| WO2007115416A1 (en) * | 2006-04-07 | 2007-10-18 | Uster Technologies Ag | Method and device for the analysis of moved, solid, elongate test material |
| CN100537886C (en) * | 2006-05-31 | 2009-09-09 | 中国科学院上海光学精密机械研究所 | Fabric Guide Line Tracker |
| CN101086480B (en) * | 2006-06-06 | 2010-12-01 | 浙江真爱毛纺有限公司 | Yarn light tester and method |
| CN102506682A (en) * | 2011-09-27 | 2012-06-20 | 江南大学 | Method for distinguishing apparent parameters of bunchy yarns |
| CN104849275A (en) * | 2015-04-22 | 2015-08-19 | 上海工程技术大学 | High speed digital imaging device and method for yarn appearance |
| CN104975388B (en) * | 2015-07-08 | 2017-10-27 | 江苏圣蓝科技有限公司 | A kind of weak ring detection of yarn strength and the method and its device removed |
| CN105698685B (en) * | 2016-03-28 | 2018-08-14 | 衢州市优德工业设计有限公司 | A kind of Yarn detection device |
| CN105841610B (en) * | 2016-03-28 | 2018-07-24 | 衢州市优德工业设计有限公司 | A kind of yarn detection method |
| CN111487296B (en) * | 2020-04-21 | 2022-11-01 | 郑州星驰智能科技有限公司 | Method for detecting mixing uniformity of powdery material |
| CN114836881B (en) * | 2022-04-06 | 2023-03-21 | 榕普科技(宁波)有限公司 | Yarn breakage detection method and device for shuttleless loom and automatic shutdown system |
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Assignee: Dongguan Texwinca Holdings Limited Assignor: Donghua University Contract fulfillment period: 2008.9.25 to 2013.9.24 contract change Contract record no.: 2008310000212 Denomination of invention: Method and system for measuring qaulity of multi component yarns Granted publication date: 20050330 License type: Exclusive license Record date: 20081112 |
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Assignee: Dongguan Texwinca Holdings Limited Assignor: Donghua University Contract fulfillment period: 2008.9.25 to 2013.9.24 contract change Contract record no.: 2008310000212 Denomination of invention: Method and system for measuring qaulity of multi component yarns Granted publication date: 20050330 License type: Exclusive license Record date: 20081112 |
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