CN100537886C - Fabric Guide Line Tracker - Google Patents
Fabric Guide Line Tracker Download PDFInfo
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- CN100537886C CN100537886C CNB2006100271403A CN200610027140A CN100537886C CN 100537886 C CN100537886 C CN 100537886C CN B2006100271403 A CNB2006100271403 A CN B2006100271403A CN 200610027140 A CN200610027140 A CN 200610027140A CN 100537886 C CN100537886 C CN 100537886C
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- 239000004065 semiconductor Substances 0.000 claims description 3
- 238000001514 detection method Methods 0.000 abstract description 9
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- 230000000149 penetrating effect Effects 0.000 description 3
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- 230000003760 hair shine Effects 0.000 description 1
- 239000010985 leather Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
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- 238000009941 weaving Methods 0.000 description 1
- 230000003245 working effect Effects 0.000 description 1
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Abstract
The utility model provides a fabric guide line tracker, comprises lighting system, photoelectric detection system and signal processing system, lighting system and photoelectric detection system be the same optical axis, be lighting system's infrared light source, collimating mirror and rectangular diaphragm, photoelectric detection system's light filter and photoelectric detector array on same optical axis in proper order, signal processing system form by signal conditioning circuit, analog-to-digital conversion circuit, singlechip and signal output circuit concatenate, the output end of photoelectric detector array connect signal conditioning circuit's input, this signal output circuit's output links to each other with PLC control system, rectangular diaphragm and light filter between supply to have the cloth of cloth seam that awaits measuring to place. The invention has the characteristics of high detection precision, large detection range, strong anti-interference capability, high response speed and simple operation.
Description
Technical field
The present invention relates to weaving, particularly relate to the core component of cutting in the cloth machine, promptly cut a kind of fabric guide line tracking device in the cloth machine.
Background technology
Fabric guide line comprises the pre-formed joint on the fabric, as cloth seam, leather seam etc., with widely different prefabricated lines of fabric intrinsic colour etc.
In order to improve the utilization rate of fabric, the cloth-cutting knife of cutting on the cloth machine is cut off fabric along pre-formed joint on the fabric.Formerly in the technology, adopt artificial the supervision and the mode of manual adjustments pre-formed joint, make pre-formed joint aim at cloth-cutting knife.When cutting the operation of cloth machine, operating personnel need keep a close eye on the pre-formed joint of fabric.Depart from if pre-formed joint has with respect to the cloth-cutting knife position, then need in time manually control pre-formed joint correcting mechanism, pre-formed joint is corrected to the cloth-cutting knife position.Fabric is a high-speed cruising on the cloth machine owing to cut, and pre-formed joint can depart from cloth-cutting knife at any time in the running, and operating personnel are difficult in time be corrected for a long time.
The shortcoming of above-mentioned technology formerly is:
1, alignment precision is low, and percent defective is higher.When operating personnel felt tired, perhaps because operating personnel's subjective judgement when makeing mistakes, can't make pre-formed joint aim at cloth-cutting knife, to cut the percent defective of fabric higher to such an extent as to cut the cloth machine.
2, operating personnel's working strength is big.Fabric is a high-speed cruising on the cloth machine owing to cut, and pre-formed joint can depart from the cloth-cutting knife of cutting on the cloth machine at any time in the running, and operating personnel energy concentrated area constantly observe the pre-formed joint position, pre-formed joint in time must be adjusted to the cloth-cutting knife position simultaneously.
3, production efficiency is lower.In order to improve the opposite joint precision, the rate of reducing the number of rejects and seconds, operating personnel can reduce to cut the cloth machine speed of service, cause production efficiency to reduce.
Summary of the invention
The objective of the invention is to overcome the shortcoming of above-mentioned technology formerly, a kind of detection accuracy height is provided, investigative range is big, antijamming capability is strong and can feeds back the fabric guide line tracking device of pre-formed joint position in real time.
Technical solution of the present invention is as follows:
A kind of fabric guide line tracking device, by illuminator, Photodetection system and signal processing system are formed, the same optical axis of described illuminator and Photodetection system, be the infrared light supply of illuminator successively on same optical axis, collimating mirror and rectangular aperture, the optical filter of Photodetection system and photodetector array, described signal processing system is by signal conditioning circuit, analog to digital conversion circuit, single-chip microcomputer and signal output apparatus are connected in series, the input of the output termination signal conditioning circuit of described photodetector array, the output of this signal output apparatus links to each other with the PLC control system, and sacrificial vessel has the fabric of fabric guide line to be measured to place between described rectangular aperture and the optical filter.
Described illuminator is used to the fabric that throws light on.Photodetection system is used to survey the light distribution through fabric, and light intensity is converted to the corresponding signal of telecommunication.Signal processing system is used to handle the signal of telecommunication of Photodetection system output, and to after the signal of telecommunication processing, output pre-formed joint positional information.
Described illuminator comprises infrared light supply, is collimating mirror and rectangular aperture successively on the output light path of infrared light supply.
Described Photodetection system comprises optical filter and photodetector array, is mainly used to survey the light distribution through fabric.Fabric is bigger at the penetrating light intensity at pre-formed joint place, and compare at other local penetrating light intensities of transmitted light intensity and fabric at prefabricated lines place a great difference is arranged also.When the absorption of prefabricated lines contrast Mingguang City greater than other places of fabric during to the absorption of illumination light, then at the transmitted light intensity at prefabricated lines place less than other local light intensity of fabric; Otherwise, at the transmitted light intensity at prefabricated lines place greater than other local light intensity of fabric.So the output signal difference according to each probe unit in the photodetector array just can detect the pre-formed joint position.
Described signal processing system comprises signal conditioning circuit, analog to digital conversion circuit, single-chip microcomputer and signal output apparatus, be mainly used to handle analog signal from Photodetection system output, and in single-chip microcomputer, handle the back by signal output apparatus output and pre-formed joint position corresponding codes, be used to control the adjustment direction and the adjustment amount of pre-formed joint.
Described infrared light supply both can work in DC mode, also can work in the ac modulation pattern.
Optical filter in the described Photodetection system is the high-performance infrared fileter that sees through infrared light, stops visible light, is used for the extraneous visible light of elimination, and visible light is to the interference of photodetector array in the elimination working environment.
Probe unit one-dimensional linear in the photodetector array of described Photodetection system is arranged, and unit number has wherein determined total investigative range of fabric guide line tracking device, and the size of each probe unit has determined the position sensing precision of pre-formed joint.
Signal conditioning circuit in the described signal processing system is realized the processing to each probe unit output analog signal in the photodetector array, as phase-locked amplification, filtering amplification etc.If above-mentioned infrared source working is in DC mode, then the major function of signal conditioning circuit is that filtering is amplified; If infrared source working is in the ac modulation pattern, then the major function of signal conditioning circuit is phase-locked amplification.
The present invention compares with technology formerly has following technique effect:
1. simple to operate.The present invention surveys automatically and feeds back the pre-formed joint position in running, does not need manual intervention, has greatly alleviated operating personnel's working strength.
2. antijamming capability is strong.The present invention adopts infrared light supply and high-performance infrared fileter, has eliminated the interference of visible light in the working environment, can round-the-clock operate as normal.
3. response speed is fast.The present invention adopts optical means to survey the pre-formed joint position, because the photodetector response speed is fast, so the photodetector array output signal can real time reaction pre-formed joint position.Single-chip Controlling analog to digital conversion circuit high speed acquisition photodetector array output signal, position encoded by handling the current pre-formed joint of real-time output.So this device can not influence the speed of service of cutting cloth machine complete machine, the production efficiency height.
4. alignment precision height.The size of each probe unit has determined alignment precision in the photodetector array, can adopt undersized probe unit, improves the alignment precision of the present invention to pre-formed joint.
Description of drawings
Fig. 1 is the systematic schematic diagram of fabric guide line tracking device of the present invention.
Fig. 2 is the structural representation of rectangular aperture in the fabric guide line tracking device of the present invention.
Fig. 3 is the transmittance curve figure of optical filter among the present invention.
Fig. 4 is the structural representation of photodetector array among the present invention.
The specific embodiment
The invention will be further described below in conjunction with drawings and Examples, but should not limit protection scope of the present invention with this.
See also Fig. 1, Fig. 1 is the systematic schematic diagram of fabric guide line tracking device of the present invention.As seen from Figure 1, the present invention includes illuminator, Photodetection system and signal processing system.In illuminator, on the light beam direction of advance of sending along infrared light supply 1, be disposed with collimating mirror 2 and rectangular aperture 3, what place in rectangular aperture 3 backs is the fabric 4 with pre-formed joint 401 to be measured.Photodetection system comprises optical filter 5 and photodetector array 6.The same optical axis of illuminator and Photodetection system.The signal processing system that the signal of telecommunication of photodetector array 6 outputs is directly delivered to is thereafter handled.Because fabric 4 is bigger at the penetrating light intensity at pre-formed joint 401 places, so the pairing position of the probe unit of output signal maximum in the photodetector array 6 is exactly the position at pre-formed joint 401 places.In signal processing system, pass through signal conditioning circuit 7, analog to digital conversion circuit 8, single-chip microcomputer 9 and signal output apparatus 10 successively from the analog signal of photodetector array 6, the output pre-formed joint is position encoded to PLC control system 11, and PLC control system 11 realizes the correction of pre-formed joint position according to the position encoded drive motors of received pre-formed joint executing agency.
Described illuminator adopts infrared light supply 1, and infrared light supply 1 can be infrarede emitting diode, infrared semiconductor laser etc.The mode of operation of infrared light supply 1 can be a DC mode, also can be the ac modulation pattern.Under the ac modulation pattern, the output intensity of infrared light supply 1 is modulated into the square wave or the sine wave of certain frequency.
Collimating mirror 2 in the described illuminator is used for beam collimation that infrared light supply 1 is sent, makes the light beam vertical irradiation to fabric 4, to improve pre-formed joint position sensing precision.
See also Fig. 2, Fig. 2 is the structural representation of rectangular aperture 3 among the present invention, and its width is a, highly is b.Described rectangular aperture 3 is constrained to rectangle with the cross section of the collimated light beam of collimating mirror 2 outputs, makes the light distribution that shines on the fabric 4 even.
Described optical filter 5 is high-performance infrared fileters.Because the spectral response range of photodetector array 6 is wider, visible light also there is higher sensitivity, and exists strong visible light in the working environment.So, before photodetector array 6, added optical filter 5 among the present invention, the infrared light that only allows infrared light supply 1 to send passes through, and the visible light in the prevention working environment, make photodetector array 6 can only receive the infrared illumination that infrared light supply 1 sends, thereby improved the signal to noise ratio of photodetector array 6 output signals, also promptly improved pre-formed joint and surveyed and alignment precision.Fig. 3 is the transmittance curve figure of optical filter 5.
See also Fig. 4, Fig. 4 is the structural representation of photodetector array 6.Described photodetector array 6 is arranged by a plurality of photodetector unit one-dimensional linears and is formed.Photodetector unit 601 can be photodiode, photomultiplier etc.The number of the probe unit in the photodetector array 6 (w/w1) has determined the investigative range that fabric guide line tracking device of the present invention is total, and the size (w1) of the single probe unit 601 in the photodetector array 6 has determined the detection accuracy of pre-formed joint of the present invention position.As shown in Figure 2, the wide a of rectangular aperture 3 and high b should be respectively greater than the wide w and the high h of photodetector array shown in Figure 46.
Described signal conditioning circuit 7 is used to handle the analog signal of photodetector array 6 outputs.If infrared light supply 1 works in DC mode, then signal conditioning circuit 7 mainly comprises the filtering amplification module; If infrared light supply 1 works in the ac modulation pattern, then signal conditioning circuit 7 mainly comprises phase-locked amplification module.The feature of signal conditioning circuit 7 is, it is made up of the electronic circuit of a plurality of concurrent workings, and the quantity of electronic circuit is identical with the probe unit quantity of photodetector array 6, and corresponding one by one.Electronic circuit can be regulated separately, this can the compensating illumination system inconsistency of each probe unit response characteristic in the inhomogeneities of light distribution in the collimated light beam cross section of output and the photodetector array 6.
The present invention uses infrared light supply 1 and high performance infrared fileter 5, and the visible light that can eliminate well in the working environment disturbs, and has improved signal to noise ratio significantly; If infrared light supply 1 works in ac modulation pattern and the signal conditioning circuit 7 and comprises phase-locked amplification module, signal to noise ratio is further improved.
Described analog to digital conversion circuit 8, the analog signal conversion that is mainly used in signal conditioning circuit 7 outputs becomes data signal.
The described single-chip microcomputer 9 main signals of telecommunication of gathering the reflection pre-formed joint position of signal conditioning circuit 7 outputs by analog to digital conversion circuit 8, judge the probe unit position of the photodetector array 6 corresponding, send the current location coding by signal output apparatus 10 at last with the pre-formed joint position.
Described signal output apparatus 10 is an optical coupling isolator; its effect is the position encoded PLC of the delivering to control system 11 of pre-formed joint of single-chip microcomputer 9 outputs; and single-chip microcomputer 9 directly is electrically connected with PLC control system 11 nothings, and this can eliminate the influence and the guard signal treatment system of external disturbance.
The course of work of fabric guide line tracking device of the present invention is as follows: the light beam that infrared light supply 1 sends is incident in rectangular aperture 3 after collimating mirror 2 collimations are for collimated light beam.Shine fabric 4 surfaces that have pre-formed joint 401 from the collimated light beam of rectangular aperture 3 outgoing, will be at the transmitted light intensity at pre-formed joint 401 places of fabric 4 greater than fabric 4 other local transmitted light intensities.Shine photodetector array 6 surfaces from the light beam of fabric 4 outgoing to be measured behind optical filter 5 elimination visible lights, wherein, the output signal that faces the photodetection unit of pre-formed joint will be bigger than the output signal of other probe units.The electricity of photodetector array 6 inputs in the signal conditioning circuit 7 and handles.If infrared light supply 1 works in the ac modulation pattern, then signal conditioning circuit 7 carries out delivering to analog to digital conversion circuit 8 after the phase-locked amplification with the output signal of photodetector array 6 and carries out analog-to-digital conversion; If infrared light supply 1 works in DC mode, then signal conditioning circuit 7 carries out delivering to analog to digital conversion circuit 8 after filtering is amplified with the output signal of photodetector array 6 and carries out analog-to-digital conversion.Single-chip microcomputer 9 is gathered the signal that comprises fabric pre-formed joint information to be measured of photoelectronic detecting array 6 outputs by control analog to digital conversion circuit 8, and in single-chip microcomputer 9, handle, it is position encoded to obtain current pre-formed joint at last, be encoding to PLC control system 11 by signal output apparatus 10 outgoing positions, thereby realize the accurate correction of pre-formed joint position.
Fig. 1 is a most preferred embodiment of the present invention, and its concrete parameter declaration is described below: it is the semiconductor laser of 980nm that infrared light supply 1 adopts centre wavelength, adjustable power, and work in DC mode.The wide a=60mm of rectangular aperture, high b=25mm.The base material of optical filter 5 is the coloured glass of strong absorption visible light, and in substrate, plated the anti-reflection optical thin film of 980nm infrared light, its transmittance curve as shown in Figure 3, the transmitance of 5 pairs of visible lights of optical filter is almost nil, and is more than 90% to the transmitance of infrared light.Photodetector array 6 is photodiode arrays, wherein contains 11 probe units, the length h=18mm of each probe unit, and adjacent probe unit centre-to-centre spacing w1=5.08mm, total investigative range is w=55mm, i.e. each 27.5mm of cloth-cutting knife both sides.Signal conditioning circuit 7 is made up of dual-stage amplifier, and the one-level amplifier is realized current/voltage-converted and LPF, and two-stage amplifier realizes that signal amplifies, and multiplication factor is adjustable.The AD chip that analog to digital conversion circuit 8 is selected for use is MAX197, has 8 analog input channels, 12 conversion accuracies, and full scale is 10V.What single-chip microcomputer 9 was selected for use is the AT89C52 chip of Atmel company, and it has the internal RAM of 256bit and the inside ROM of 8kbit, can satisfy system's needs fully.Program in the single-chip microcomputer 9 adopts Gray code that the pre-formed joint positional information is encoded; In order to prevent to disturb and protect this circuit, signal output apparatus 10 uses optical coupling isolator 4N25 chips, makes itself and follow-up system not have being connected on electric.
The pre-formed joint detection accuracy of fabric guide line tracking device of the present invention is 5.08mm, satisfy in the textile industry ± 10mm cut the cloth position accuracy demand.
Shows that through on probation compare with technology formerly, characteristics of the present invention are:
1. simple to operate. The present invention is in running, and automatic detection also feeds back the pre-formed joint position, does not need artificial Intervene, greatly alleviated operating personnel's working strength.
2. antijamming capability is strong. The present invention adopts infrared light supply and high-performance infrared fileter, has eliminated building ring The interference of visible light in the border can round-the-clockly work.
3. fast response time. The present invention adopts optical means to survey the pre-formed joint position, because the photodetector response Speed is fast, so the photodetector array output signal can real time reaction pre-formed joint position. The single-chip microcomputer control Molding number conversion circuit high speed acquisition photodetector array output signal is worked as by processing real-time output Front pre-formed joint is position encoded. So this device can not affect the speed of service of cutting cloth machine complete machine, produce effect The rate height.
4. alignment precision height. The size of each probe unit has determined alignment precision in the photodetector array, can
To adopt undersized probe unit, improve the present invention to the alignment precision of pre-formed joint.
Fabric guide line tracking device of the present invention can be delivered to current pre-formed joint positional information PLC control real-time and accurately System 11, PLC control system 11 is accurately aimed at pre-formed joint with the cloth-cutting knife position, realizes cutting the automatic of cloth process Change and intellectuality, avoided the subjective factor impact fully, greatly increase work efficiency, reduced and cut the cloth percent defective.
Claims (6)
1, a kind of fabric guide line tracking device, be characterised in that it is by illuminator, Photodetection system and signal processing system are formed, the same optical axis of described illuminator and Photodetection system, be the infrared light supply (1) of illuminator successively on same optical axis, collimating mirror (2) and rectangular aperture (3), optical filter of Photodetection system (5) and photodetector array (6), described signal processing system is by signal conditioning circuit (7), analog to digital conversion circuit (8), single-chip microcomputer (9) and signal output apparatus (10) are connected in series, the input of the output termination signal conditioning circuit (7) of described photodetector array (6), the output of this signal output apparatus (10) links to each other with PLC control system (11), and sacrificial vessel has the cloth (4) of cloth seam to be measured (401) to place between described rectangular aperture (3) and the optical filter (5).
2, fabric guide line tracking device according to claim 1 is characterized in that described infrared light supply (1) is infrarede emitting diode or infrared semiconductor laser.
3, fabric guide line tracking device according to claim 1 and 2, the mode of operation that it is characterized in that described infrared light supply (1) is a DC mode, or the ac modulation pattern.
4, fabric guide line tracking device according to claim 1, it is characterized in that the processing of described signal conditioning circuit (7) realization to each probe unit (601) output analog signal in the photodetector array (6), if described infrared light supply (1) works in DC mode, then the major function of signal conditioning circuit (7) is that filtering is amplified; If infrared light supply (1) works in the ac modulation pattern, then the major function of signal conditioning circuit (7) is phase-locked amplification.
5, fabric guide line tracking device according to claim 1 is characterized in that photodetection unit (601) one-dimensional linear in the described photodetector array (6) is arranged.
6, fabric guide line tracking device according to claim 1 is characterized in that described signal output apparatus (10) is an optical coupling isolator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100271403A CN100537886C (en) | 2006-05-31 | 2006-05-31 | Fabric Guide Line Tracker |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100271403A CN100537886C (en) | 2006-05-31 | 2006-05-31 | Fabric Guide Line Tracker |
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| CN1851106A CN1851106A (en) | 2006-10-25 |
| CN100537886C true CN100537886C (en) | 2009-09-09 |
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| CNB2006100271403A Expired - Fee Related CN100537886C (en) | 2006-05-31 | 2006-05-31 | Fabric Guide Line Tracker |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101603268B (en) * | 2009-07-02 | 2011-01-05 | 浙江大学 | Guide line seam position identifying system based on one-dimensional position sensor |
| CN103132233B (en) * | 2013-02-21 | 2014-08-06 | 湖北工业大学 | Automatic visual aligning and scutching method for scutcher |
| CZ304758B6 (en) * | 2013-07-16 | 2014-09-24 | Rieter Cz S.R.O. | Method of monitoring quality of yarn by yarn cleaner and sensor for making the same |
| CN104773590A (en) * | 2015-02-12 | 2015-07-15 | 宁波大千纺织品有限公司 | Slitting-batching machine |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1462879A (en) * | 2003-06-26 | 2003-12-24 | 东华大学 | Method and system for measuring qaulity of multi component yarns |
| JP2004264144A (en) * | 2003-02-28 | 2004-09-24 | Dac Engineering Co Ltd | Detection method and detection device for thickness of nonwoven fabric, etc. |
| JP2005254337A (en) * | 2004-03-09 | 2005-09-22 | Brother Ind Ltd | Cutting device, cutting control device and cutting control program |
| CN200961214Y (en) * | 2006-05-31 | 2007-10-17 | 上海增尔适科技发展有限公司 | Photoelectric cloth seam detector |
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2006
- 2006-05-31 CN CNB2006100271403A patent/CN100537886C/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004264144A (en) * | 2003-02-28 | 2004-09-24 | Dac Engineering Co Ltd | Detection method and detection device for thickness of nonwoven fabric, etc. |
| CN1462879A (en) * | 2003-06-26 | 2003-12-24 | 东华大学 | Method and system for measuring qaulity of multi component yarns |
| JP2005254337A (en) * | 2004-03-09 | 2005-09-22 | Brother Ind Ltd | Cutting device, cutting control device and cutting control program |
| CN200961214Y (en) * | 2006-05-31 | 2007-10-17 | 上海增尔适科技发展有限公司 | Photoelectric cloth seam detector |
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Granted publication date: 20090909 Termination date: 20110531 |