CN105133104B - A kind of on-line checking and the method and its device for removing Compact-spun Yarn grid ring failure yarn defect - Google Patents
A kind of on-line checking and the method and its device for removing Compact-spun Yarn grid ring failure yarn defect Download PDFInfo
- Publication number
- CN105133104B CN105133104B CN201510460927.8A CN201510460927A CN105133104B CN 105133104 B CN105133104 B CN 105133104B CN 201510460927 A CN201510460927 A CN 201510460927A CN 105133104 B CN105133104 B CN 105133104B
- Authority
- CN
- China
- Prior art keywords
- yarn
- defect
- grid
- peak
- yarn defect
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Landscapes
- Spinning Or Twisting Of Yarns (AREA)
Abstract
The invention discloses the method and its device of a kind of on-line checking and removing Compact-spun Yarn grid ring failure yarn defect, this method comprises the following steps：Obtain yarn linear density signal；Obtain the voltage signal directly proportional to yarn linear density；Yarn VC% spectrograms are obtained by time-domain analysis；The power spectrum chart of yarn signal is obtained by frequency-domain analysis, and calculates the characteristic value of characteristic function；Characteristic value and normal power spectrogram are subjected to Characteristic Contrast；If comparison meets grid loop yarn defect condition, judge that this section of yarn has grid loop yarn defect；Judge whether to cut off section yarn with reference to CV% and Characteristic Contrast.Can be in winding procedure on-line checking Compact-spun Yarn due to yarn defect caused by grid ring failure, while grid ring failure yarn defect can be removed on request.
Description
【Technical field】
The present invention relates to the winding procedure of spinning industry yarn production, more particularly to a kind of on-line checking and removing compact spinning
The method and its device of yarn grid ring failure yarn defect.
【Background technology】
Compact spinning is a kind of spinning method that current spinning industry generally uses；Grid ring is in " compact spinning " process
One peculiar part.Grid ring it is unclean and it is damaged can all cause Compact-spun Yarn fault, grid loop yarn defect influences very when weaving cotton cloth
Seriously.The damage of grid ring or the bad yarn defect that can cause specific form of cleaning, conventional yarn different from the feature of traditional yarn defect
Detection means can not detect.At present, the method for tightening weave net ring failure yarn defect is not directly measured, can only indirectly testing yarn
Evenness fault index (such as CV%).CV% values are an indexs in conventional yarn detection.Whether deposited by CV% fluction analysis
In grid ring failure yarn defect, a small number of distortion degrees very serious " grid loop yarn defect ", due to causing the serious of yarn CV%
It is exceeded, it can be found and remove；And most of " grid loop yarn defect " can not be found.
【The content of the invention】
The problem of existing for prior art, the present invention propose a kind of on-line checking and remove Compact-spun Yarn grid ring
The method and its device of failure yarn defect, can be in winding procedure on-line checking Compact-spun Yarn due to yarn caused by grid ring failure
Defect, while grid ring failure yarn defect can be removed on request.
To achieve the above object, the technical scheme taken of the present invention is：
A kind of on-line checking and the method for removing Compact-spun Yarn grid ring failure yarn defect, comprise the following steps：
Obtain yarn linear density signal；
Obtain the voltage signal directly proportional to yarn linear density；
Yarn signal average, CV% values, and amplitude singular point are obtained by time-domain analysis；Carry out often hair property defect detection；
The power spectrum chart of yarn signal is obtained by frequency-domain analysis, and construction feature function, calculates characteristic value in real time；It is described
Characteristic value include power spectrum chart in peak number, peak position and energy barycenter position；
Characteristic value and normal power spectrogram are subjected to Characteristic Contrast；
If comparison meets grid loop yarn defect feature, tentatively judge that this section of yarn has grid loop yarn defect；
Differentiate Compact-spun Yarn with reference to normal hair property defect detection result, and the preliminary judged result of grid loop yarn defect, joint
Grid ring failure yarn defect.
As a further improvement on the present invention, peak refers to that the performance number of some discrete point on the curve of power spectrum chart meets
More than more than the 30% of its former and later two discrete point performance number；The position of main peak refers to that the maximum in all peak values is main peak,
Abscissa positions are the position of main peak in coordinate system in curve for it；Energy barycenter position refers on curve on corresponding discrete point
The power spectral value of adjacent five discrete points sums obtained energy curve, and it is energy to compare energy value maximum wherein on energy curve
Center of gravity is measured, abscissa positions corresponding to energy barycenter are energy barycenter position.
As a further improvement on the present invention, described Characteristic Contrast includes：
The number at peak is more than or equal to 3；Energy barycenter position substantial deviation normal position；Peak position deviates normal position
Put；
Meet grid loop yarn defect feature if satisfaction is at least one above.
As a further improvement on the present invention, at described normal power spectrogram refers to the power spectrum of normal yarn through average
Spectrogram after reason.
A kind of on-line checking and removing Compact-spun Yarn grid ring failure yarn defect device, including for obtaining yarn linear density
The capacitance sensor of signal and multiple processing units corresponding with capacitance sensor；
Processing unit includes：
First detection module, for yarn linear density signal to be carried out into time-domain analysis, output yarn amplitude, average, CV%
Value；And carry out often hair property defect detection；
Second detection module, for carrying out power spectrumanalysis in a frequency domain to yarn signal, differentiate whether yarn contains net
Lattice loop yarn defect；Including：
AD conversion unit, for converting analog signals into data signal；
Digital filtering unit, for data signal to be carried out into digital filtering processing；
Characteristic function structural unit, for establishing the characteristic function of power spectrum chart；
Characteristic value computing unit, for calculating power spectrum, and the characteristic function of power spectrum chart；
Characteristic value comparison unit, for the power spectrum chart characteristic value of the yarn characteristic value of real-time testing and normal yarn to be entered
Row compares；
Judging unit, according to the aspect ratio pair of characteristic value comparison unit, carry out judging that yarn whether there is grid loop yarn defect.
Also include transducer, signal amplifier, nurse one's health wave filter；
Described transducer is connected with capacitance sensor, and capacitance sensor is connected with signal amplifier；It is then divided into two-way,
First detection module is connected all the way；Another way connects the second detection module by nursing one's health wave filter.
The characteristic value of described characteristic function includes the number at peak, the position of main peak and energy barycenter position in power spectrum chart
Put, if meeting, the number at peak is more than or equal to 3 and/or energy barycenter position substantial deviation normal position and/or peak position is inclined
From normal position, then judge that this section of yarn has grid loop yarn defect.
Compared with prior art, the present invention has advantages below：
The method of the present invention more accurately analyzes the fault of yarn, its frequency domain by time domain and frequency domain dual-channel analysis
Analysis is compared by characteristic value, more accurately analyzes characteristic value and the difference of normal yarn defect of the yarn defect of grid ring yarn,
And then analyze yarn and whether there is grid loop yarn defect.The characteristic function being construction, and with includes " number at peak ", " main peak position
Put " and " energy barycenter of spectrum ".By analysing and comparing, conventional grid loop yarn defect problem can be detected.And pass through
The grid ring failure yarn defect of yarn is differentiated with reference to normal hair property defect detection joint.Grid ring failure yarn defect substantially can enter
Row detects, and ensures the yield of the grid ring of actual production.
The present apparatus is handled before being done in signal condition passage using analog filter, and numeral filter is realized with software in post processing
Ripple device group, power Spectral Estimation is carried out to measured signal.Feature letter more than binary to the distinctive latent structure of grid loop yarn defect
Number.The present apparatus has time domain and frequency domain dual-channel analysis concurrently, and collection signal is simple, and processing mainly carries out the meter of characteristic value by software
Calculate and compare, can accurately analyze grid loop yarn defect problem.Can be in winding procedure on-line checking Compact-spun Yarn due to net
Yarn defect caused by lattice circle failure, while grid ring failure yarn defect can be removed on request.There is reality to actual production grid ring
Directive function.The present apparatus is ultra-small volume micropower circuit module (28*23*2).
【Brief description of the drawings】
Fig. 1 is normal yarn and the CV% curve comparison figures of the yarn containing grid loop yarn defect.
Fig. 2 is the on-line checking of the present invention and the schematic device for removing Compact-spun Yarn grid ring failure yarn defect.
Fig. 3 is the on-line checking of the present invention and the schematic diagram of device for removing Compact-spun Yarn grid ring failure yarn defect.
Fig. 4 is the on-line checking of the present invention and the method flow diagram for removing Compact-spun Yarn grid ring failure yarn defect.
Fig. 5 a and Fig. 5 b are respectively normal power spectrogram and grid loop yarn defect power spectrum chart comparison example figure be present.
【Embodiment】
The present invention is described in further detail below in conjunction with the accompanying drawings, and described is explanation of the invention rather than limit
It is fixed.
As shown in Fig. 2 in Compact-spun Yarn winding procedure, a kind of on-line checking of the present invention and removing compact spinning wire grid
Enclose the device of failure yarn defect, including the system of multiple capacitance sensors and corresponding multiple processing units composition.Compact spinning
Yarn exports the irregular signal of thickness of yarn by capacitance sensor.The irregular signal of thickness of yarn is divided into multichannel and send multiple places by system
Manage unit and carry out multiple characteristic value processing.Send often hair property fault processing unit progress normal hair property fault processing all the way, output details,
Slubbing and cotton knot；Another way send frequency domain to handle unit, the module as the detection of grid loop yarn defect.The module is that yarn signal is existed
" power spectrumanalysis " is carried out in frequency domain, the specific characteristic shown to grid loop yarn defect on power spectrum carries out mathematical modeling, leads to
The characteristic value (more than binary) for calculating characteristic function is crossed, to differentiate whether yarn contains grid loop yarn defect.
Specifically, as shown in figure 3, flat capacitance sensor gathers yarn linear density signal, transducer is transmitted to, is obtained and yarn
The directly proportional voltage signal of line line density, then two-way is divided into by signal condition amplifier, pass through analog-to-digital conversion and first all the way
Processing unit connection carries out time-domain analysis；Another way first passes through conditioning wave filter, into the second data processing unit, is sequentially connected
Analog-digital converter, digital filter group, signature analysis function calculating is carried out, obtain characteristic value, carried out aspect ratio pair, judge whether
There is grid loop yarn defect.End product combination first processing units are drawn a conclusion, if are the faults that cut off.
As shown in figure 4, the yarn with grid ring failure yarn defect, after time-domain analysis, CV% values and cotton knot quantity may
Respective change can occur, while its power spectrum chart can show specific characteristic, system is according to the CV% more than certain excursion
Value and cotton knot quantity, and the power spectrum characteristic of extraction is compared with standard spectrum, finally determine whether it is compact spinning netting
Lattice circle failure yarn defect is simultaneously cut off.
As shown in figure 5 a and 5b, the characteristic function that the present invention constructs contains three principal characters：First, in power spectrum
The number at peak, second, in power spectrum main peak position, third, the energy barycenter position of power spectrum.
Characteristic function structural unit construction feature function is specially：Peak function refers to the performance number in the curve of power spectrum chart
More than its previous performance number and it is more than its latter performance number, for more effective practical operation and obtains relatively obvious peak
Value, it is desirable to which the previous peak value of the peakedness ratio and the latter peak value are big by 30%.The position of main peak refers to the maximum in all peak values
It is worth for main peak, its abscissa positions in coordinate system in curve.Energy barycenter position refers on curve phase on corresponding discrete point
The power spectral value of adjacent five discrete points sums obtained energy curve, and it is energy to compare energy value maximum wherein on energy curve
Center of gravity is measured, abscissa positions corresponding to energy barycenter are energy barycenter position.
By analyzing three main characteristic values, the characteristic value in normal power spectrogram is contrasted, the number at peak is big if meeting
In equal to 3 and/or energy barycenter position substantial deviation normal position and/or peak position deviate normal position, then judging should
Grid loop yarn defect be present in section yarn.
Normal power spectrum chart peak number is can be seen that as one from Fig. 5 a, and the position and energy barycenter position at peak all exist
Near peak position；As can be seen that the number three at grid loop yarn defect power spectrum chart peak, peak position and energy be present in Fig. 5 b contrasts
The more normal power spectrum chart in position of amount center of gravity has deviateed.Similarly demonstrate this section of yarn and grid loop yarn defect be present.It is real
, it is necessary to which this section of yarn is purged in the production of border, to ensure to produce the yield of grid ring.
Claims (5)
1. a kind of on-line checking and the method for removing Compact-spun Yarn grid ring failure yarn defect, it is characterised in that including following step
Suddenly：
Obtain yarn linear density signal；
Obtain the voltage signal directly proportional to yarn linear density；
Yarn signal average, CV% values, and amplitude singular point are obtained by time-domain analysis；Carry out often hair property defect detection；
The power spectrum chart of yarn signal is obtained by frequency-domain analysis, and construction feature function, calculates characteristic value in real time；Described spy
Value indicative includes number, peak position and the energy barycenter position at peak in power spectrum chart；
Characteristic value and normal power spectrogram are subjected to Characteristic Contrast；Characteristic Contrast includes：
The number at peak is more than or equal to 3；Energy barycenter position substantial deviation normal position；Peak position deviates normal position；
Meet grid loop yarn defect feature if satisfaction is at least one above；
If comparison meets grid loop yarn defect feature, tentatively judge that this section of yarn has grid loop yarn defect；
Differentiate compact spinning wire grid with reference to normal hair property defect detection result, and the preliminary judged result of grid loop yarn defect, joint
Enclose failure yarn defect.
2. on-line checking according to claim 1 and the method for removing Compact-spun Yarn grid ring failure yarn defect, its feature
It is, peak refers to that the performance number of some discrete point on the curve of power spectrum chart meets to be more than its former and later two discrete point performance number
More than 30%；The position of main peak refers to that the maximum in all peak values is main peak, its abscissa position in coordinate system in curve
It is set to the position of main peak；Energy barycenter position refers to that the power spectral value of adjacent five discrete points on corresponding discrete point on curve is asked
With obtained energy curve, it is energy barycenter to compare energy value maximum wherein on energy curve, horizontal seat corresponding to energy barycenter
Mark is set to energy barycenter position.
3. on-line checking according to claim 1 and the method for removing Compact-spun Yarn grid ring failure yarn defect, its feature
It is, described normal power spectrogram refers to spectrogram of the power spectrum of normal yarn after average value processing.
4. a kind of on-line checking and removing Compact-spun Yarn grid ring failure yarn defect device, it is characterised in that including for obtaining
The capacitance sensor of yarn linear density signal and multiple processing units corresponding with capacitance sensor；
Processing unit includes：
First detection module, for yarn linear density signal to be carried out into time-domain analysis, output yarn amplitude, average, CV% values；And
Carry out often hair property defect detection；
Second detection module, for carrying out power spectrumanalysis in a frequency domain to yarn signal, differentiate whether yarn contains grid ring
Yarn defect；Including：
AD conversion unit, for converting analog signals into data signal；
Digital filtering unit, for data signal to be carried out into digital filtering processing；
Characteristic function structural unit, for establishing the characteristic function of power spectrum chart；
Characteristic value computing unit, for calculating power spectrum, and the characteristic function of power spectrum chart；The characteristic value of characteristic function includes work(
The number of rate middle peak of spectrogram, the position of main peak and energy barycenter position, if meeting, the number at peak is more than or equal to 3 and/or energy
Position of centre of gravity substantial deviation normal position and/or peak position deviate normal position, then judge that this section of yarn has grid loop yarn
Defect；
Characteristic value comparison unit, for the power spectrum chart characteristic value of the yarn characteristic value of real-time testing and normal yarn to be compared
It is right；
Judging unit, according to the aspect ratio pair of characteristic value comparison unit, carry out judging that yarn whether there is grid loop yarn defect.
5. a kind of on-line checking according to claim 4 and removing Compact-spun Yarn grid ring failure yarn defect device, it is special
Sign is, in addition to transducer, signal amplifier, nurses one's health wave filter；
Described transducer is connected with capacitance sensor, and capacitance sensor is connected with signal amplifier；Two-way is then divided into, all the way
Connect first detection module；Another way connects the second detection module by nursing one's health wave filter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510460927.8A CN105133104B (en) | 2015-07-30 | 2015-07-30 | A kind of on-line checking and the method and its device for removing Compact-spun Yarn grid ring failure yarn defect |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510460927.8A CN105133104B (en) | 2015-07-30 | 2015-07-30 | A kind of on-line checking and the method and its device for removing Compact-spun Yarn grid ring failure yarn defect |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105133104A CN105133104A (en) | 2015-12-09 |
| CN105133104B true CN105133104B (en) | 2018-03-13 |
Family
ID=54718660
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510460927.8A Active CN105133104B (en) | 2015-07-30 | 2015-07-30 | A kind of on-line checking and the method and its device for removing Compact-spun Yarn grid ring failure yarn defect |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105133104B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107043975B (en) * | 2017-03-29 | 2019-11-08 | 东华大学 | A kind of electronic yarn clearer based on hardware FFT filtering |
| CN107059169A (en) * | 2017-05-08 | 2017-08-18 | 李先登 | The method that spinning fault is reduced with the second drafting theory |
| CN113046875B (en) * | 2021-01-29 | 2022-09-06 | 安徽省金士棉机有限责任公司 | Ring spinning flaw product removing device |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4491831A (en) * | 1981-10-09 | 1985-01-01 | Murata Kikai Kabushiki Kaisha | Method and apparatus for analysis of information about yarn eveness |
| US5119308A (en) * | 1988-08-26 | 1992-06-02 | Murata Kikai Kabushiki Kaisha | Control system for spinning machine |
| US5537811A (en) * | 1991-09-11 | 1996-07-23 | Roospark Ag | Method for categorizing yarn defects and cleansing yarn |
| CN101180535A (en) * | 2005-06-15 | 2008-05-14 | 乌斯特技术股份公司 | Method and device for detecting foreign matter in a moving solid elongated test object |
| CN101310181A (en) * | 2005-11-18 | 2008-11-19 | 乌斯特技术股份公司 | Characterization of fancy yarn |
| CN102864537A (en) * | 2012-01-05 | 2013-01-09 | 杭州电子科技大学 | Realization method of programmable controller integrating yarn cleaning and yarn breaking detection |
-
2015
- 2015-07-30 CN CN201510460927.8A patent/CN105133104B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4491831A (en) * | 1981-10-09 | 1985-01-01 | Murata Kikai Kabushiki Kaisha | Method and apparatus for analysis of information about yarn eveness |
| US5119308A (en) * | 1988-08-26 | 1992-06-02 | Murata Kikai Kabushiki Kaisha | Control system for spinning machine |
| US5537811A (en) * | 1991-09-11 | 1996-07-23 | Roospark Ag | Method for categorizing yarn defects and cleansing yarn |
| CN101180535A (en) * | 2005-06-15 | 2008-05-14 | 乌斯特技术股份公司 | Method and device for detecting foreign matter in a moving solid elongated test object |
| CN101310181A (en) * | 2005-11-18 | 2008-11-19 | 乌斯特技术股份公司 | Characterization of fancy yarn |
| CN102864537A (en) * | 2012-01-05 | 2013-01-09 | 杭州电子科技大学 | Realization method of programmable controller integrating yarn cleaning and yarn breaking detection |
Non-Patent Citations (4)
| Title |
|---|
| "条干均匀度测试仪***的研究";吉红;《中国硕士学位论文全文数据库信息科技辑》;20100215(第02期);第2-12、33-41页 * |
| 棉纺在线检测的发展和展望;刘荣清;《纺织导报》;20071231(第12期);第72页 * |
| 用AR模型分析纱条不匀和识别故障的研究;丁志荣等;《中国纺织大学学报》;19911231;第17卷(第6期);第35-37页 * |
| 纱条不匀的功率谱分析与微机实现;***等;《中国纺织大学学报》;19871231;第13卷(第2期);第17-21、23-29页 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105133104A (en) | 2015-12-09 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104665849B (en) | A kind of high ferro dispatcher based on the interaction of many physiological signals multi-model stress detection method | |
| CN102721464B (en) | Method and system for detecting winding deformation faults of power transformer | |
| CN105133104B (en) | A kind of on-line checking and the method and its device for removing Compact-spun Yarn grid ring failure yarn defect | |
| CN111354366B (en) | Abnormal sound detection method and abnormal sound detection device | |
| CN106908671A (en) | A kind of non-intrusion type household loads intelligent detecting method and system | |
| CN103926456B (en) | Flicker value calculation method based on improved FFT and inverter | |
| CN104221400B (en) | For checking the method and system of sonic transducer | |
| CN101907437A (en) | Wavelet difference algorithm-based cable fault localization method | |
| CN101004436A (en) | High senitive system for detecting local discharging of high voltage electric power equipment with large capacity | |
| CN109374119A (en) | Transformer vibration signal Characteristic Extraction method | |
| CN108169639A (en) | Method based on the parallel long identification switch cabinet failure of Memory Neural Networks in short-term | |
| CN109001577A (en) | A kind of electrical energy measurement live data analysis method and system | |
| CN114676738B (en) | PPG signal quality evaluation method and device and PPG signal processing method and system | |
| CN107390084A (en) | Fault direction detection method, apparatus, relay and computer-readable recording medium | |
| CN110974189A (en) | Method, device, equipment and system for detecting signal quality of pulse wave | |
| CN106842099A (en) | A kind of CT saturation recognition methods and device | |
| CN110553789A (en) | state detection method and device of piezoresistive pressure sensor and brake system | |
| CN102495264B (en) | Voltage dip duration detection method based on information entropy | |
| CN108896805B (en) | Chopped wave signal verification method and system and electric energy detection device | |
| CN102988041A (en) | Selective cardiac-magnetic signal averaging method in signal noise suppression | |
| CN107796977A (en) | A kind of three-phase power grid voltage parameter detection method and device | |
| CN114184870A (en) | Non-invasive load identification method and equipment | |
| CN106236041A (en) | A kind of measure in real time and accurately heart rate and the algorithm of breathing rate and system | |
| CN105203915A (en) | Diagnosis system and diagnosis method of loosening defect of power transformer winding | |
| CN202981962U (en) | Speech function test processing system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |