CN101058378A - Device and method communicating with textile product carrier - Google Patents
Device and method communicating with textile product carrier Download PDFInfo
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- CN101058378A CN101058378A CNA2007100981233A CN200710098123A CN101058378A CN 101058378 A CN101058378 A CN 101058378A CN A2007100981233 A CNA2007100981233 A CN A2007100981233A CN 200710098123 A CN200710098123 A CN 200710098123A CN 101058378 A CN101058378 A CN 101058378A
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- textile product
- product carrier
- antenna
- subassembly
- electronic tag
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Abstract
A device to communicate with the textile product carrier which contains electron label (5) with antenna (4), the electron label sets to move with the textile product carrier and to rotate around the axis of the textile product carrier (1), thereinto, the textile product carrier (1) has the first end (8) located on the spindle (10) and the second end (9) relative to the first end (8). The main sensitivity of the antenna (4) is relative to the change of electromagnetism field along the axis, and the antenna is located on the second end (9) of the textile product carrier (1).
Description
Technical field
The present invention relates to the textile product field.It relates to equipment and method described in a kind of as preorder of cooresponding independent claims, that communicate with textile product carrier.
Background technology
In DE 37 32 367 C2, a kind of electronic chip that is configured on the textiles bobbin is disclosed.This chip can be by reading the position by contact surface that reading device electrically contacted and communicate with the equipment of reading at bobbin.Alternatively, this chip is connected on the printed coil that is configured on the ferrite.This allows the inductive communication with this chip.Printed coil can dispose with one heart with respect to bobbin, suppose bobbin can with chip communication, and no matter its angular coordinate.But, not explanation make those skilled in the art be implemented in bobbin with for example usually up to 25, can communicate with chip during being rotated at a high speed of 000rpm.
Summary of the invention
The objective of the invention is to create a kind of equipment and method that communicates with textile product carrier aforementioned type, it provides the improvement at the said equipment.Another object of the present invention provides with the electronic tag that is positioned on the textile product carrier of high speed revolution and communicates.Another purpose of the present invention provides a kind of electronic tag on textile product carrier, and this electronic tag comprises the electronic chip of active power supply.
These purposes realize by the equipment that communicates according to cooresponding independent claims, with textile product carrier and method.
The present device that communicates with textile product carrier comprises the electronic tag that has antenna.This equipment is configured to move and rotate around the axle of textile product carrier with textile product carrier, wherein, textile product carrier have first end that is configured to be placed on the spindle and with the first end second opposed end.The main sensitivity of this antenna is for the electromagnetic field along axle changes, and this antenna is positioned at second end of textile product carrier.
As a result, when goods support was in the rotation, it was possible utilizing the object identification of RFID technology.Because electronic tag is embedded in the nonmetallic goods support three-dimensionally, so, even when goods support places on the spindle and is in rotation, its also allow to discern and with the communicating by letter of label.And, be positioned at the bring in layout of the antenna of second end away from spindle.In other words, when textile product carrier placed on the spindle, spindle did not pass through antenna.If spindle is by under the situation of antenna, the metallo-spindle will hinder radio frequency (RF) communication by antenna.
In a preferred embodiment of the invention, along described axle, in perpendicular to the parallel projection on the plane of described axle (7), the area that the projection of described antenna is surrounded is described antenna along throwing the maxim of the area that is surrounded on any other direction or near maxim at described antenna.Described area constitutes the flux window of electromagnetic flux, and this electromagnetic flux is coupled to electro-motive force or the electric current in the antenna.
In a preferred embodiment of the invention, when textile product carrier centered on described rotation in the stationary magnetic field, it was minimum or approaching minimum that the voltage of responding in antenna is compared with the voltage of responding to around any other rotation.This has eliminated the interference of stray magnetic field.In fact, antenna is also nonideal, and may pick up little interfering signal.Given this reason, the communication frequency in the preferred embodiment of the present invention are and the different frequency of interfering frequency corresponding to the goal pace of carrier rotation.
In a preferred embodiment of the invention, antenna is symmetrical for described axle.In another preferred embodiment of the present invention, antenna with the both direction of described axle quadrature on extend.That is when along described observation antenna, be appreciiable, by the opening that antenna centered on or crossed over.Antenna is preferably circle or helix.It can comprise the one or more rings that are configured in basically perpendicular in the plane of described axle.Perhaps, antenna can be approximate at least spiral coil, and spirochetal axle is consistent with the axle of textile product carrier.This makes antenna to form by line being twined columniform support portion.
In a preferred embodiment of the invention, electronic tag is configured to by antenna, communicates by letter with radio spectrum.
In another preferred embodiment of the present invention, electronic tag and antenna embed in the textile product carrier, and making does not have extra thickness on the surface of carrier.This has also been avoided under the situation of other mode, contingent distortion and physical damage during the long-time running of carrier.
In another preferred embodiment of the present invention, this equipment comprises a subassembly, and this subassembly comprises the main body of supporting antenna and electronic tag, and wherein, this subassembly is one of following at least:
● insertion is injection molded in the described textile product carrier (1),
● place described textile product carrier (1), perhaps
● place on the described textile product carrier (1).
Preferably, described main body comprises the part of hollow, and before or after antenna twined this body, electronic chip was placed in one.Aerial coil and chip embedded spool (cop) by this way and keep the safety of assembly, and avoid because rough processing or any other physics contact the damage that causes.
In another preferred embodiment of the present invention, textile product carrier is cone or the cylinder in the second end place osed top hollow, and subassembly is positioned at the second end place of textile product carrier.Subassembly is from the chamber of top or bottom insertion goods support.
In another preferred embodiment of the present invention, textile product carrier is the cone or the cylinder of the hollow of opening wide at the second end place, and subassembly is cylindrical shape or cone shape, and places the second interior end place of textile product carrier or place the described second end place around described textile product carrier.
In another preferred embodiment of the present invention, this equipment comprises the armature coil of powering to active label when textile product carrier rotates in magnetic field.Preferably, this magnetic field is stationary field, and it is produced by near the permanent magnet the top that places goods support.The rotating armature coil makes the coil cutting magnetic field in magnetic field.This induces electric current, with to electronic tag power supply and/or to charging such as the battery of electronic tag or the power storage device of cond.
Armature coil can be circle, ellipse, rectangle etc.In principle, it preferably extends upward on the first direction parallel with described axle and with the second party of described axle quadrature at least.
In another preferred embodiment of the present invention, active electronic label extracts power and comes its electric flux memory storage is charged according to signal of communication.
With the method that textile product carrier communicates, wherein, textile product carrier comprises the antenna that is connected to electronic tag, and this method comprises the following steps:
● textile product carrier is placed on the spindle;
● the rotation textile product carrier
● when textile product carrier rotates, by antenna, on radio frequency communication link, communicate with electronic tag.
Communication can be used encryption, reads or writes label or eavesdrop communication to prevent unauthorized side.
In a preferred embodiment of the invention, this method also comprises the steps: the armature coil that is electrically connected by with the textile product carrier that rotates in the magnetic field power supply to be offered electronic tag.
Run through the application, mainly spool or the ring stand structure spool that the yarn that is produced in the weaving loom is twined quoted.But, should be clear, the present invention is applicable to any non-metallic products carrier that can rotate certain of production period the time such as bobbin (spool), reel (bobbin tube), cone (cone) etc., and during rotation communicates with it.
According to the dependent patent claim, further preferred embodiment is conspicuous.The feature of claim to a method can combine with the feature of equipment claim, and vice versa.
Description of drawings
To purpose of the present invention more specifically be described hereinafter with reference to preferred exemplary embodiment, this embodiment describes in conjunction with the accompanying drawings, wherein:
Fig. 1 shows the textile bobbin in the weaving loom;
Fig. 2 shows textile bobbin;
Fig. 3 schematically shows the cross sectional drawing of cylindrical-conical spool;
Fig. 4 schematically shows the cross sectional drawing of columniform spool;
Fig. 5 schematically shows the subassembly at the place, tip of spool;
Fig. 6 schematically shows the spool tip of opening;
Fig. 7 schematically shows the prefabricated subassembly that places in the spool tip;
Fig. 8 schematically shows the prefabricated subassembly that places on the spool tip;
Fig. 9 schematically shows the embodiment of antenna;
Figure 10 schematically shows another embodiment of antenna;
Figure 11 schematically shows the layout of armature coil; And
Figure 12 schematically shows the antenna and the armature coil of combination.
Reference numeral and implication thereof used among the figure are listed in reference numerals list with the form of summing up.In principle, in the drawings, identical part provides identical Reference numeral.
The specific embodiment
Fig. 1 shows the textile bobbin 1 in the weaving loom.Between spool 1, disposed spacer 11.In the bottom of spool 1, the yarn 13 of weaving has covered first end 8 of spool 1.At the top of spool 1, second end 9 opens wide, that is, spool 1 is cylindrical and has from the opening of the end to end of spool 1.This opening places on the spindle.
It is osed top textile bobbins 1 that Fig. 2 shows its second end 9.Between second end 9, be provided with spacer 11.
Fig. 3 schematically shows the cross sectional drawing that places the conical spool 1 on the conical spindle 10 when operation.Second end 9 at spool 1 has disposed subassembly 2.Subassembly 2 has carried antenna and RFID label (more specifically describing hereinafter).Second end 9 is osed tops, and by subassembly 2 is pushed to conical cavity, subassembly 2 can be inserted spool 1.It can be wedged or adhere within second end 9 and remain there.Alternatively, subassembly 2 can be the insertion injection molding in spool 1.
What illustrate equally is the position that is used for giving via armature coil 6 the constant permanent magnet 12 of RFID label 5 power supplies, as will be described hereinafter.
Fig. 4 schematically shows the cross sectional drawing that cylindrical spool 1 or other its second end 9 are textile product carriers of opening wide.The subassembly 2 here be shaped as boss or annulus around opening 14.At first end 8, textile product carrier 1 has around the circular protrusion of excircle or edge 15.
According to other embodiments of the invention, it is in the conical spool 1 that opens wide that the subassembly 2 of helically coiled is incorporated in its second end 9; Perhaps, to be incorporated in its second end 9 be in the cylindrical spool 1 of osed top to subassembly 2 as shown in Figure 3.
Fig. 5 schematically shows the subassembly 2 in the tip of spool 1.The most advanced and sophisticated with dashed lines of spool 1 draws.Subassembly 2 comprises columniform main body 3, the aerial coil 4 that twines main body 3 and the RFID label 5 that is attached to main body 3.Antenna 4 preferably forms spiral coil; The two ends of antenna 4 are electrically connected to RFID label 5.RFID label 5 can place the well of subassembly 2.
For in 5 communications of RFID label, be installed near spool 1 fixing transmitter/receiver and pass through fixing antenna, preferably in the RF scope, generate an electromagnetic field.Because the antenna 4 in the spool 1 is disposed symmetrically for axle 7, wherein, spool 1 is around these axle 7 rotations, so the reception of electromagnetic field is independent of the angular coordinate of spool 1 basically.Fixed antenna preferably is located immediately at the top of second end 9 with aerial coil 4, and maximum read range is provided thus.If this antenna departs from axle one angle of rotary bobbin, operation also is possible.But spending to 9 degree from 0 increases angles, will reduce transmission efficiency and read range gradually.
In addition, because the material of spool 1 and subassembly 2 is non-conductive, and because metal spindle 10 does not extend consequently approaching or passes aerial coil 4, so the reception that does not have the metal of spindle 10 to disturb is possible.Similarly, RFID label 5 can send the RF signal by antenna 4.In a preferred embodiment of the invention, RFID label 5 comprises the circuit of interference that elimination is caused by the stray field of electromagnetism or that caused by the fast rotational of imperfect antenna in the stray magnetic field.
Fig. 6 schematically shows unlimited spool tip.Antenna 4 twines the material of spool 1 self, and RFID label 5 is attached to antenna 4 and spool 1.By around antenna 4 and RFID label 5 and injection molding and/or twine the bar or the band of suitable material, come the residual gap 16 between the periphery of fill antenna 4, RFID label 5 and spool 1, make the periphery (with dashed lines draws) in gap flush with the outside face of spool 1 through filling.Thisly antenna 4 and RFID label 5 are configured on the spool 1 and can certainly be used for the osed top spool 1 of Fig. 5 without the method for subassembly 2.On the other hand, slide on the spool 1 or slip into spool 1 and by subassembly 2, thereby subassembly 2 can be used for reequiping existing spool by the bonding desired location that is fixed in annular among Fig. 4 or helically coiled.
Although in Fig. 5, RFID label 5 is illustrated as on the winding that is positioned at aerial coil 4,, in Fig. 6, RFID label 5 is illustrated as and is positioned under the winding, is preferably located in the chamber that is formed in the spool 1.Certainly, this layout of RFID label 5 also can realize in the embodiment of Fig. 5.
Fig. 7 and Fig. 8 schematically show and are inserted in the spool 1 or the section drawing of the prefabricated subassembly 2 on spool 1.Subassembly 2 among these embodiment preferably has the form of taper shape or conical ring.It is configured to be similar to the subassembly 2 that provides among Fig. 5, and still, RFID label 5 and aerial coil 4 are covered by the covering part branch.The cover part can be an independent parts, perhaps is injection moulded around RFID label 5 and aerial coil 4, makes them be protected, and makes and provide smooth surface in the outside of subassembly 2.Two embodiment can be used for reequiping existing spool.In two embodiment, subassembly 2 can for example be adhered on the position and/or can be connected by " bolt-type (snapin) " and be inserted, and is as described below:
In the embodiment of Fig. 7, near its 9 places, top, form circular groove 19 at conical spool 1 inside face, it has and the corresponding height of the height of subassembly 2.Subassembly 2 is truncateds cone or is bevelled ring in its periphery at least.The external measurement of the lower end of subassembly 2 is a bit larger tham the interior yardstick at the spool 1 of the lower edge of groove 19.As a result, subassembly 2 inserts at the opening of spool 1, be forced to upwards towards groove 19, and the elastic force of factor accessory 2 and/or spool 1 and snap into position in the groove 19.
In the embodiment of Fig. 8, push up 9 places at conical spool 1 outside close its, form groove 19, it has and the corresponding height of the height of subassembly 2.Subassembly 2 is tapered rings of circumference at least within it.The external measurement of the upper end of subassembly 2 is slightly smaller than the external measurement at the spool 1 of the upper edge of groove 19.As a result, subassembly 2 places on the upper end 9 of spool 1, be forced downwardly towards groove 19, and the elastic force of factor accessory 2 and/or spool 1 and snap into position in the groove 19.
Fig. 9 schematically shows the embodiment of antenna 4, and wherein, printed wire 17 flexible or inflexibility forms loop antenna 4, and carries the RFID label 5 that is electrically connected to antenna 4.In this embodiment, printed wire 17 has the function of the main body 3 of above-mentioned subassembly 2.RFID label 5 is placed the ring of formation aerial coil 4 or the centre of several rings, allow very little realization.
Figure 10 schematically shows another embodiment of antenna 4, and wherein, the antenna 4 on the printed wire 17 is to be formed by the spiral bus with two or more rings.The intersection of the bus on the printed wire 17, RFID label 5 places on the antenna 4, make first point of connection of RFID label 5 at an end of the inside of spiral Contact antenna 4, and second point of connection of RFID label 5 is at the other end of the outside Contact antenna 4 of antenna 4.(part of the bar of being covered by antenna 4 is illustrated by dotted line).The opening of the center of printed wire 17 makes that it is in the spool 1 that opens wide with second end 9 therein.
Figure 11 schematically shows the layout of armature coil 6.The figure shows the only situation of monocycle, still, alternatively, armature coil 6 can comprise several rings along the circumference shown in the figure.For the purpose of clear, antenna 4 is not shown, its can be configured on the armature coil 6 or under.Armature coil 6 across on the direction of S. A. 7 and with the upwardly extending flux window in the side of axle 7 quadratures.As a result, in the stationary magnetic field around axle 7 rotating armature coils 6 with induced electric motive force, voltage and current, it is by rectification and be used for to RFID label 5 power supply and/or to charging such as electrical storage devices such as the battery of RFID label 5 or electric capacity.
Come RFID label 5 is powered in order to produce magnetic fields, near the upholder the position of second end 9 of each spool that is in its control position place, be furnished with permanent magnet by armature coil 6.For example, with reference to figure 1 and Fig. 2, permanent magnet is attached on the spacer wall 11.
Figure 12 schematically shows solid or the extension as the built-up coil 18 of antenna and armature coil.Equally, one or more ring can along shown in line arrange.Built-up coil 18 is along axle 7 with perpendicular on axle 7 and the orthogonal both direction and extend on three-dimensional.As a result, detected along the RF field of axle, and the stationary magnetic field will make and induce the maincenter electric current.For the embodiment of this antenna, RFID label 5 comprises that filter circuit is to separate signal of communication and power supply signal.
How Fig. 9 can and combine antenna 4 or subassembly 2 embedding the multi-form of carrier 1 with various carrier embodiment to the antenna embodiment shown in Figure 12.
Though the present invention is described in the preferred embodiment of the present invention,, should be understood that obviously the present invention is not limited to this, but can implement with other variety of way within the scope of the claims and realize.
The symbol tabulation
1 spool, 12 permanent magnets
2 subassemblies, 13 yarns
3 main bodys, 14 openings
4 antennas, 15 edges
6 armature coils, 17 printed circuits
7 axles, 18 combination coils
8 first ends, 19 grooves
The lower limb of 9 second ends, 20 grooves
The top edge of 10 spindles, 21 grooves
11 spacers
Claims (15)
1. equipment that communicates with textile product carrier (1), comprise the have antenna electronic tag (5) of (4), and be configured to move and rotate around the axle (7) of described textile product carrier (1) with described textile product carrier (1), wherein, described textile product carrier (1) have first end (8) that is configured to be placed on the spindle (10) and with described first end (8) second opposed end (9), it is characterized in that
The main sensitivity of described antenna (4) is for the electromagnetic field along described axle (7) changes, and
Described antenna (4) is positioned at second end (9) of described textile product carrier (1).
2. equipment according to claim 1, wherein, along described axle (7), in perpendicular to the parallel projection on the plane of described axle (7), the area that the projection of described antenna (4) is surrounded is a described antenna (4) along throwing the maxim of the area that is surrounded on any other direction or near maxim at described antenna (4).
3. equipment according to claim 1 and 2, wherein, when described textile product carrier (1) in the stationary magnetic field during around described axle (7) rotation, in described antenna (4) the voltage of induction with around any other rotation the voltage of induction to compare be minimum or near minimum.
4. according to claim 2 or 3 described equipment, wherein, described antenna (4) is symmetrical with respect to described axle (7), and particularly circular or spiral.
5. according to the described equipment of one of aforementioned claim, wherein, described electronic tag (5) is configured to by described antenna (4), communicates by letter with radio spectrum.
6. according to the described equipment of one of aforementioned claim, wherein, described electronic tag (5) and described antenna (4) are embedded into described textile product carrier (1), and making does not have extra thickness on the surface of described textile product carrier (1).
7. according to the described equipment of one of aforementioned claim, comprise subassembly (2), this subassembly (2) comprises the main body (3) that supports described antenna (4) and described electronic tag (5), and wherein, described subassembly (2) is one of following at least:
● insertion is injection molded in the described textile product carrier (1),
● place described textile product carrier (1), perhaps
● place on the described textile product carrier (1).
8. equipment according to claim 7, wherein, described textile product carrier (1) is cone or a cylinder of locating osed top hollow at described second end (9), and described second end (9) that described subassembly (2) is positioned at described textile product carrier (1) is located.
9. equipment according to claim 7, wherein, described textile product carrier (1) is the circular cone or the cylinder of the hollow locating to open wide at described second end (9), and described subassembly (2) is cylindrical or conical, and place described second end (9) in the described textile product carrier (1) to locate, perhaps place described second end (9) around described textile product carrier (1).
10. according to the described equipment of one of aforementioned claim, comprise armature coil (6), it is used for when described textile product carrier (1) rotates in magnetic field is active label (5) power supply.
11. equipment according to claim 10, wherein, described armature coil (6) extends upward on the first direction parallel with described axle (7) and with the second party of described axle (7) quadrature at least.
12. a subassembly that uses in the described equipment according to one of aforementioned claim (2), this subassembly (2) comprise the main body (3) of supporting antenna (4) and electronic tag (5).
13. subassembly according to claim 12 (2) specifically is used to reequip textile product carrier (1), wherein, described antenna (4) and electronic tag (5) are covered by cover panel and are protected.
14. a method that communicates with textile product carrier (1), wherein, described textile product carrier (1) comprises according to the described equipment of one of claim 1 to 11, and antenna (4) is connected to electronic tag (5), and wherein, described method comprises the following steps:
● described textile product carrier (1) is placed on the spindle (10);
● rotate described textile product carrier (1);
● when described textile product carrier (1) rotates, by described antenna (4), on radio frequency communication link, communicate with described electronic tag (5).
15. method according to claim 14 also comprises the steps: the armature coil (6) that is electrically connected by with the described textile product carrier (1) that rotates in magnetic field, power to described electronic tag (5).
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| IN1620CH2005 | 2006-04-17 | ||
| IN1620/CHE/2005 | 2006-04-17 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101058378A true CN101058378A (en) | 2007-10-24 |
| CN101058378B CN101058378B (en) | 2011-08-24 |
Family
ID=38864712
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2007100981233A Expired - Fee Related CN101058378B (en) | 2006-04-17 | 2007-04-13 | Device and method communicating with textile product carrier, and subassembly of the device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101058378B (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101739598A (en) * | 2009-12-10 | 2010-06-16 | 天津工业大学 | Special-shaped card and bobbin using same |
| WO2014117449A1 (en) * | 2013-01-31 | 2014-08-07 | 深圳市华阳微电子有限公司 | Cloth-based electronic tag and manufacturing method therefor |
| CN106381585A (en) * | 2016-11-17 | 2017-02-08 | 江阴市华方新技术科研有限公司 | Intelligent collective doffing system for spools |
| CN107720441A (en) * | 2017-09-27 | 2018-02-23 | 安徽华茂纺织股份有限公司 | A kind of Bobbin for spinning |
| CN107784344A (en) * | 2017-11-24 | 2018-03-09 | 安徽华茂纺织股份有限公司 | Rove spool and use its spinning quality traceability system and method |
| CN108840175A (en) * | 2018-06-27 | 2018-11-20 | 江南大学 | A kind of spool with electronic tag being easy to detect working condition |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109941839A (en) * | 2017-12-20 | 2019-06-28 | 中航光电科技股份有限公司 | Band packaging cable and its cable package component |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02305233A (en) * | 1989-05-19 | 1990-12-18 | Star Micronics Co Ltd | Data carrier |
| CN2252799Y (en) * | 1996-02-02 | 1997-04-23 | 陶志勇 | Integrally-sealed cone tube for fibre composite material textile |
| EP1055632A3 (en) * | 1999-05-25 | 2001-06-27 | Gebrueder Loepfe Ag | Method for the identification of the spinning units on cops |
| CN2763904Y (en) * | 2004-07-06 | 2006-03-08 | 江苏瑞福智能科技有限公司 | Anti-interference electronic label |
-
2007
- 2007-04-13 CN CN2007100981233A patent/CN101058378B/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101739598A (en) * | 2009-12-10 | 2010-06-16 | 天津工业大学 | Special-shaped card and bobbin using same |
| WO2014117449A1 (en) * | 2013-01-31 | 2014-08-07 | 深圳市华阳微电子有限公司 | Cloth-based electronic tag and manufacturing method therefor |
| CN106381585A (en) * | 2016-11-17 | 2017-02-08 | 江阴市华方新技术科研有限公司 | Intelligent collective doffing system for spools |
| CN107720441A (en) * | 2017-09-27 | 2018-02-23 | 安徽华茂纺织股份有限公司 | A kind of Bobbin for spinning |
| CN107784344A (en) * | 2017-11-24 | 2018-03-09 | 安徽华茂纺织股份有限公司 | Rove spool and use its spinning quality traceability system and method |
| CN108840175A (en) * | 2018-06-27 | 2018-11-20 | 江南大学 | A kind of spool with electronic tag being easy to detect working condition |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101058378B (en) | 2011-08-24 |
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