CN1244261A - Magnetic tags - Google Patents
Magnetic tags Download PDFInfo
- Publication number
- CN1244261A CN1244261A CN 97181285 CN97181285A CN1244261A CN 1244261 A CN1244261 A CN 1244261A CN 97181285 CN97181285 CN 97181285 CN 97181285 A CN97181285 A CN 97181285A CN 1244261 A CN1244261 A CN 1244261A
- Authority
- CN
- China
- Prior art keywords
- magnetic
- mark
- active component
- axis
- substrate
- 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.)
- Pending
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Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
- G01V15/00—Tags attached to, or associated with, an object, in order to enable detection of the object
Landscapes
- Physics & Mathematics (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- General Physics & Mathematics (AREA)
- Geophysics (AREA)
- Burglar Alarm Systems (AREA)
- Soft Magnetic Materials (AREA)
- Credit Cards Or The Like (AREA)
Abstract
A magnetic tag is disclosed, which comprising a plurality of magnetically active elements supported on or by a substrate, the magnetically active elements displaying or being capable of displaying magnetic anisotropy. The tag is characterized in that the magnetically active elements are generally linear and have an axis of easy magnetization along their length, and in that said elements are disposed so as to transect one another. In another embodiment, the tag is generally rectangular, having a major axis and a minor axis; a plurality of magnetically active elements are supported on or by a substrate, the magnetically active elements displaying or being capable of displaying magnetic anisotropy. The magnetically active elements are generally linear and have an axis of easy magnetization along their length, and are disposed so as to transect the major axis of the tag.
Description
Among patented claim formerly, especially PCT/GB96/000823 (WO 96/31790) and the PCT/GB96/00367 (WO 97/04338), we have described and have asked for protection the new technology of space magnetic inquiry and new magnetic mark.The technology of describing in WO 96/31790 is based on the characteristic when utilizing the space of magnetic material by having magnetic sky (magnetic null) regional.Especially, especially to have described the passive marker with one or more magnetic elements be how to finish the number of each element of expression information and arrangement space as the remotely readable data carrier to these earlier applications.
We have described and have utilized permanent magnet or electromagnet to set up a plurality of possibility system embodiments of magnetic sky in above-mentioned application.We have also described some system embodiments, wherein have severally to be specially adapted to adopt coercive force very low the mark of the magnetic element that magnetic permeability is high.These embodiment come work by the harmonic wave that detects an inquiry of alternation by a narrow margin of superposeing.
A nearest application, among the GB/9612831.9 (applying for PCT/GB97/01662 with its corresponding PCT), we have described the layout of being worked by the empty baseband signal that produces of magnetic by mark by detecting, and it need not the alternation inquiry field of any stack.Specific design with a reader of form of slits has also been described.
The application relates to the magnetic mark of some type, and it is used in the detection/inquiry system of those types of describing in the early stage patented claim, but also can be used in other system.
According to an aspect of the present invention, a kind of rectangular magnetic mark of being generally of major axis and minor axis that has is provided, this mark comprises and being carried in the substrate or by a plurality of magnetic active components of its carrying, this magnetic active component shows maybe can show magnetic anisotropy, it is characterized in that the magnetic active component generally is linear and has the magnetized axis that is easy to along its length direction, and be that described element is arranged to the major axis of this mark of crosscut.Usually (but not must) magnetic element is arranged to parallel with the minor axis of mark.
The mark of this form can utilize a quadripolar magnetic field to read.For example, the inquiry system that utilization is described in PCT/GB96/00823 (publication No. is WO 96/31790) can obtain satisfied result, the 2D quadrupole field that wherein has the gradient of 2kA/m/m is that the AC of 30A/m drives by root mean square when 6.25kHz, utilizes second harmonic to detect when 12.5KHz; Mark comprises a plurality of magnetic elements that formed by Vacuumschmeltze ' s 6025 rotation fusion zones (spin meltribbon), and each element has the size of 32mm * 0.8mm * 0.025mm.Mark passes through in the inquiry field along its long axis direction.In optimum Working, the plane of mark should be positioned at 30 ° of scopes of four pole axis.
The advantage of this type mark structure is can load more highdensity data in given label size.
According to a further aspect in the invention, a kind of magnetic mark is provided, it comprises a plurality of be carried in the substrate or by the magnetic active component of this substrate-loading, this magnetic active component shows maybe can show magnetic anisotropy, it is characterized in that the magnetic active material is normally linear, and have the magnetized axis of being easy to, and be that described element is arranged to crosscut each other along its length direction.
In one embodiment, mark is normally circular; In this case, magnetic element, or one of them is a little, intersects each other in round centre.In a special embodiment, all magnetic elements are configured to diameter of a circle.In another embodiment, be labeled as sphere or rotation ellipsoid form, and magnetic element is configured to the diameter of spheroid or rotation ellipsoid.
Utilize " circle " embodiment that has just described, inquiry system is utilized fixed amplitude 300A/m, with the rotation sweep field of 16.66Hz rotation.Magnetic recording tape has the size of 32mm * 0.8mm * 0.025mm, and at least 6 ° of spaced radials.Inquiry system is identical with above-described inquiry system about a first aspect of the present invention.
Wherein magnetic element is configured to the ball array of the diameter of ball, preferably makes average band 9 ° of angles in ball theoretical center correspondence at interval.This mark can contain for example 252 magnetic recording tapes.
Accompanying drawing provides the example of mark of the present invention, and wherein Fig. 1 illustrates the mark of first kind of (rectangle) type, and Fig. 2 illustrates the mark of second kind of (petal) type.
The present invention is not limited to the above embodiments, and they only are nonrestrictive examples.
Claims (6)
1. magnetic mark, it comprises a plurality of be carried in the substrate or by the magnetic active component of substrate-loading, this magnetic active component shows maybe can show magnetic anisotropy, it is characterized in that: the magnetic active component is generally linear, and have the magnetized axis of being easy to along their length directions, be that also described element is arranged to crosscut each other.
2. mark as claimed in claim 1 is characterized in that described mark is generally circular.
3. mark as claimed in claim 2 is characterized in that described each magnetic active component or one of them intersect in the circle center a bit.
4. mark as claimed in claim 1 it is characterized in that describedly being labeled as sphere or rotation ellipsoid shape, and magnetic cell is configured to the diameter of ball or ellipsoid.
5. one kind has the rectangular magnetic mark of being generally of major axis and minor axis, this mark comprises a plurality of be carried in the substrate or by the magnetic active component of substrate-loading, this magnetic active component shows maybe can show magnetic anisotropy, it is characterized in that the magnetic active component is normally linear, and have the magnetized axis of being easy to along their length direction; Be that also described element is configured to the major axis crosscut with mark.
6. mark as claimed in claim 1, it is parallel with the minor axis of mark to it is characterized in that described magnetic active component is configured to.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB9625561.7 | 1996-12-09 | ||
| GBGB9625561.7A GB9625561D0 (en) | 1996-12-09 | 1996-12-09 | Magnetic tags |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1244261A true CN1244261A (en) | 2000-02-09 |
Family
ID=10804176
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 97181285 Pending CN1244261A (en) | 1996-12-09 | 1997-12-09 | Magnetic tags |
Country Status (8)
| Country | Link |
|---|---|
| EP (1) | EP0943107A1 (en) |
| JP (1) | JP2001506004A (en) |
| CN (1) | CN1244261A (en) |
| AU (1) | AU7850098A (en) |
| BR (1) | BR9713892A (en) |
| CA (1) | CA2274552A1 (en) |
| GB (1) | GB9625561D0 (en) |
| WO (1) | WO1998026312A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100417936C (en) * | 2003-03-21 | 2008-09-10 | 博奥生物有限公司 | Micro-device with magnetization axis and its method of use and application |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6075441A (en) | 1996-09-05 | 2000-06-13 | Key-Trak, Inc. | Inventoriable-object control and tracking system |
| GB9722938D0 (en) * | 1997-10-30 | 1998-01-07 | Flying Null Ltd | Generating magnetic fields |
| GB9817803D0 (en) * | 1998-08-14 | 1998-10-14 | Flying Null Ltd | Magnetic information carriers |
| CA2343411C (en) | 1998-09-11 | 2002-11-12 | Key-Trak, Inc. | Object carriers for an object control and tracking system |
| WO2000016281A1 (en) | 1998-09-11 | 2000-03-23 | Key-Trak, Inc. | Mobile object tracking system |
| AU6031499A (en) | 1998-09-11 | 2000-04-03 | Key-Trak, Inc. | Object control and tracking system with zonal transition detection |
| AU5916799A (en) | 1998-09-11 | 2000-04-03 | Key-Trak, Inc. | Object tracking system with non-contact object detection and identification |
| GB9919333D0 (en) | 1999-08-16 | 1999-10-20 | Flying Null Ltd | Information bearing label codes |
| GB9923199D0 (en) * | 1999-10-01 | 1999-12-01 | Sentec Ltd | Magnetic data tags |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0295085B1 (en) * | 1987-06-08 | 1996-11-06 | Esselte Meto International GmbH | Article detection and/or recognition using magnetic devices |
| US5017907A (en) * | 1990-01-16 | 1991-05-21 | Pitney Bowes Inc. | Double pulse magnetic markers |
| NO962734L (en) * | 1995-07-27 | 1997-01-28 | Esselte Meto Int Gmbh | Deactivable safety strip and method and apparatus for producing a deactivable safety strip |
| GB9608329D0 (en) * | 1996-04-23 | 1996-06-26 | Scient Genarics Ltd | Improved methods for coding magnetic tags |
-
1996
- 1996-12-09 GB GBGB9625561.7A patent/GB9625561D0/en active Pending
-
1997
- 1997-12-09 BR BR9713892-4A patent/BR9713892A/en not_active Application Discontinuation
- 1997-12-09 CN CN 97181285 patent/CN1244261A/en active Pending
- 1997-12-09 CA CA002274552A patent/CA2274552A1/en not_active Abandoned
- 1997-12-09 WO PCT/GB1997/003389 patent/WO1998026312A1/en not_active Application Discontinuation
- 1997-12-09 AU AU78500/98A patent/AU7850098A/en not_active Abandoned
- 1997-12-09 JP JP52635698A patent/JP2001506004A/en active Pending
- 1997-12-09 EP EP97949015A patent/EP0943107A1/en not_active Withdrawn
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100417936C (en) * | 2003-03-21 | 2008-09-10 | 博奥生物有限公司 | Micro-device with magnetization axis and its method of use and application |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2001506004A (en) | 2001-05-08 |
| GB9625561D0 (en) | 1997-01-29 |
| EP0943107A1 (en) | 1999-09-22 |
| AU7850098A (en) | 1998-07-03 |
| CA2274552A1 (en) | 1998-06-18 |
| BR9713892A (en) | 2000-02-29 |
| WO1998026312A1 (en) | 1998-06-18 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |