CN101599135A - The UHF radio-frequency (RF) tag - Google Patents
The UHF radio-frequency (RF) tag Download PDFInfo
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- CN101599135A CN101599135A CNA2008101105679A CN200810110567A CN101599135A CN 101599135 A CN101599135 A CN 101599135A CN A2008101105679 A CNA2008101105679 A CN A2008101105679A CN 200810110567 A CN200810110567 A CN 200810110567A CN 101599135 A CN101599135 A CN 101599135A
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- magnetic
- foaming layer
- foaming
- uhf radio
- magnetosphere
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Abstract
The present invention is a kind of UHF radio-frequency (RF) tag, and it is used on the UHF radio frequency label.UHF radio frequency label is made up of a label, a foaming layer and a magnetosphere.The foaming of foaming series of strata one macromolecular material forms, and its density is 10～100kg/m
3, specific inductive capacity is between 1～1.5.Foaming layer can be individual layer, multilayer or individual layer (foaming of scalariform density), and foaming layer is connected with a side of label.Magnetosphere can be individual layer, multilayer or individual layer (magnetic density is a scalariform scalariform).A magnetospheric side is connected with the opposite side of foaming layer.The magnetic series of strata are made up of a magnetic and a rubber or a plastic material, and magnetic capacity is between being between 2～10.Magnetic and rubber or plastics add up to 100 weight portions, and magnetic is 65～95 weight portions (wt%), and rubber or plastics are 5～35 weight portions (wt%), and the thickness 0.1～3mm of this magnetic, one of the sheet type that is shaped as, disc or elliptical piece type of magnetic.
Description
[technical field]
The present invention is a kind of radio-frequency (RF) tag, and it is about a kind of uhf band that is applied to, and can improve the UHF radio-frequency (RF) tag of the problem that reads when label is affixed on metal or other nonmetal environment.
[background technology]
Wireless frequency identifying system (Radio Frequency Identification, hereinafter to be referred as RFID) be a kind of technology of utilizing the automatic identification object of radiofrequency signal and obtaining related data, having specific functions such as the only identification of article, real-time information transitivity and erasable information, is the electric label that development is used for replacing the conventional two-dimensional bar code.But the RFID range of application is except manufacturing, logistics, storage and retail trade; the shopping of gate inhibition's control, convenience store, library check out, take the vehicles, pay parking fee, the electronic charging of highway; but, believe that the application of following RFID can provide people more to feel at ease, live easily to all widespread uses of general daily routines such as medical services.
Rfid system mainly is made up of read write line, label and application software.System is by read write line launching electromagnetic wave or magnetic field, by being converted to energy after antenna on the label or the inductive coil reception, being used for interior identification code of chip for driving and passback gives reader, reader is again with after the radio wave signal decoding, deliver to the backend application software processes, whole data exchange process all sends by radio magnetic wave and finishes contactless automatic identification.
According to the difference of using frequency range, RFID can be divided into low frequency (135KHz), high frequency (13.56MHz), ultrahigh frequency (860～960MHz) with microwave (2.45GHz), table one is each frequency range and transmission mode.At present generally use the disadvantage of 135KHz and 13.56MHz frequency range to fall short of as transmission range, the transmission range between restriction calculating punch and the label chip can not effectively be read the label chip.So do not ask farther transmission range and higher transfer rate, certainly will be toward ultrahigh frequency and microwave band development.(860～960MHz) RFID label just can reach the transmission range more than 5 meters, and the transfer rate of 40 packages of per second as UHF.
The RFID label can return message to read write line, be because antenna can receive the electromagnetic wave that read write line sends out, generally speaking, RFID is subject to metal barrier and noise, because can produce induction current in the metal, and weaken the electromagnetic field of emission, shorten reading/writing distance, even interrupt the communication function of read write line, influence the identification and the accuracy of rfid system, especially frequency is high more, is influenced by metal easily more, makes yet electrical home appliances and packaging for foodstuff etc. are metal material mostly.Except metal, moisture also is one of important parameter that influences the label receiving sensitivity, and the electromagnetic wave of high frequency is easy of more moisture absorption in the environment more, causes the bad situation of reception, and is obvious especially in its influence of country of fabric of island-in-sea type weather.
Antenna with RFID is influenced by context easily for a long time, the modal solution of industry is nothing more than the improvement of setting about from Antenna Design, or the design of adopting active label to transmit, but these methods all only can increase the manufacturing cost of RFID label, so just have the dealer to improve the electromagnetic absorbing material of original absorption, be used for improving the problem that the RFID label is influenced by metal or other nonmetal environment.Present industry such as TDK, DIADO, NITTA, EMERSON﹠amp; All there is the relevant isolated material of production in companies such as CUMING, but mostly be the following frequency range of 13.56MHz greatly, other dealer adopts the mode of revising antenna mostly at the RFID label of uhf band, suffered influence when reducing label and being attached at metal is as the UHF frequency band label of Japanese mitsubishi electric, Toppan, Fujitsu.
In the prior art, adopt the absorbing material mode to improve and read having of distance, U.S. Pat P7205898.This invention is adopted the multilayer design, is paid attention to the combination of saturating magnetic coefficient and dielectric coefficient, and stating that it is main asked:
1. ground floor adopts the titania conduct to contact with the RFID label.
2. the magnetic that uses of the second layer is iron carbonyi, nickel zinc ferrite and magnet, and magnetic capacity is 1.5～1.7, and specific inductive capacity is 1.5～32.
In view of the foregoing invention background, existing dealer can't overcome mostly and directly the UHF radio-frequency (RF) tag is attached at metal or liquid object, even if it also is directly to revise from Antenna Design that the product of researching and developing is successfully arranged, or adopt thicker isolation magnetic material, increase the antenna cost of manufacture, in view of this, the present invention wishes to provide an absorbing material effectively and cheaply, overcomes the development predicament that RFID suffers from present.
[summary of the invention]
The present invention's fundamental purpose is providing a kind of UHF radio-frequency (RF) tag, it is that foaming layer and magnetosphere are located between label and metal level, the non-metallic layer, foaming layer and magnetosphere are a kind of absorbing material, use when improving the read write line reading tag, by environmental interference problem.
Another object of the present invention system provides a kind of UHF radio-frequency (RF) tag, and it is to be used on the UHF radio frequency label, improves the problem that reads when label is affixed on metal or other nonmetal environment.UHF radio frequency label comprises a label, a foaming layer and magnetosphere composition.The foaming of foaming series of strata one macromolecular material forms, and its density is 10～100 kilograms/stere (kg/m3), and specific inductive capacity is between 1～1.5.Foaming layer can be individual layer, multilayer or individual layer (foaming of scalariform density), and foaming layer is connected with a side of label.
Magnetosphere can be individual layer, multilayer or individual layer (magnetic density is a scalariform scalariform).A magnetospheric side is connected with the opposite side of foaming layer.The magnetic series of strata are made up of a magnetic and a rubber or a plastic material, and magnetic capacity is between being between 2～10.Magnetic and rubber or plastics add up to 100 weight portions, magnetic is 65～95 weight portions (wt%), rubber or plastics are 5～35 weight portions (wt%), and the thickness 0.1mm～3mm of this magnetic, the shape of magnetic system be selected from sheet type, disc or elliptical piece type one of them.
The present invention makes label when running into the interference of metal level or non-metallic layer by foaming layer and magnetospheric design, and the preferable distance that reads can be arranged.
Under cooperate appended graphic explanation in detail by specific embodiment, when the purpose that is easier to understand the present invention, technology contents, characteristics and the effect reached thereof.
[description of drawings]
Fig. 1 is the enforcement synoptic diagram of one of the present invention embodiment.
Fig. 2 is the structural representation of the UHF radio frequency label of one of the present invention embodiment.
Fig. 3 is the structural representation of UHF radio frequency label of another embodiment of the present invention.
Fig. 4 is the structural representation of UHF radio frequency label of the present invention's another embodiment.
Fig. 5 is the synoptic diagram of the present invention's UHF radio-frequency (RF) tag.
Among the figure:
The 12UHF radio-frequency (RF) tag
14 read write lines
16 electromagnetic waves or magnetic field
18 labels
20 foaming layers
22 double faced adhesive tapes
24 magnetospheres
26 adhesive agents
28 metal levels or non-metallic layer
32 first foaming layers
34 second foaming layers
36 first magnetospheres
38 second magnetospheres
[embodiment]
The present invention system provides a kind of UHF radio-frequency (RF) tag, and it is to be used on the UHF radio frequency label, improves the problem that reads when label is affixed on metal or other nonmetal environment.For describing the present invention in detail, please refer to Fig. 1 and Fig. 2.The present invention proposes a kind of UHF radio-frequency (RF) tag 12, reads for the read write line 14 of existing rfid system.Read write line 14 sends launching electromagnetic wave or magnetic field 16, is converted to energy after being received by the antenna on the UHF radio frequency label 12 or inductive coil, is used for chip for driving interior identification code and passback to give read write line 14 processing.
The present invention's UHF radio frequency label 12 comprises a label 18, a foaming layer 20 and a magnetosphere 24.Foaming layer 20 is between label 18 and magnetosphere 24, and a side-line of foaming layer 20 links together foaming layer 20 and label 18 with double faced adhesive tape 22.The opposite side of foaming layer 20 then links together foaming layer 20 and magnetosphere 24 with adhesive agent 26.The opposite side of magnetosphere 24 then is a metal level or non-metallic layer 28.Magnetosphere 24 is by double faced adhesive tape said two devices to be connected with metal level or non-metallic layer 28 equally.
In the present embodiment, foaming layer 20 is to be formed by macromolecular material foaming, and its dielectric coefficient is between 1～1.5, and the density of foaming layer 20 is 10～100 kilograms/stere (kgg/m3).Wherein, macromolecular material can be selected for use and be selected from polyethylene foam plate (PE/EVA), rubber pange plate (CR, EPDM, NBR), plastic foamed plate (PS), rubber-plastic foaming plate, conductive foaming plate, antistatic foam plate one of them, or wantonlyly formed more than two.
Magnetosphere 24, system is made up of a magnetic and a rubber or a plastic material, and the magnetic capacity of magnetosphere 24 is between 2～10, and wherein magnetic and rubber or plastics add up to 100 weight portions, magnetic is 65～95 weight portions (wt%), and rubber or plastics are 5～35 weight portions (wt%).Wherein, magnetic system by iron, buy, nickel and the alloyed powder person of making thereof, and the thickness of each magnetic is between 0.1mm～3mm, the shape of each magnetic system be selected from sheet type, disc or elliptical piece type one of them.In the present embodiment, the shape of magnetic is the sheet type, and sheet type particle size range is 5～35 microns (um), and sheet type thickness range is 0.05～0.25um micron (um).
Above-mentioned foaming layer of mentioning and magnetosphere are one deck person at least, last embodiment explanation be with foaming layer and the magnetosphere person that is one deck.Foaming layer of the present invention or magnetosphere all can be multiple layer combination person; As constitute above-mentioned foaming layer 20 by a plurality of foaming layers, a plurality of magnetosphere constitutes above-mentioned magnetosphere 24.Continue to introduce another embodiment of the present invention, i.e. foaming layer 20 is that first foaming layer 32 and first foaming layer 34 are formed, and please refer to Fig. 3.
The present invention's UHF radio frequency label 12 comprises a label 18, one first foaming layer 32 and first foaming layer 34 and a magnetosphere 24.First foaming layer 32 and first foaming layer 34 are between label 18 and magnetosphere 24, first foaming layer 32 and first foaming layer 34 are to fit with adhesive agent 26, and be first foaming layer 32 to be linked together with label 18, with adhesive agent 26 first foaming layer 34 linked together with magnetosphere 24 in addition with double faced adhesive tape 22.The opposite side of magnetosphere 24 then is a metal level or non-metallic layer 28.Magnetosphere 24 is by double faced adhesive tape said two devices to be connected with metal level or non-metallic layer 28 equally.
In the present embodiment, first foaming layer 32 and first foaming layer 34 are to be formed by macromolecular material foaming, the dielectric coefficient of first foaming layer 32 is between 1～1.1 or 1～1.2, the dielectric coefficient of first foaming layer 34 is between 1～1.5, and the density of first foaming layer 32 is that the density of 10～50 kilograms/stere (kgg/m3) and first foaming layer 34 is 50～100 kilograms/stere (kgg/m3).Wherein, macromolecular material can be selected for use and be selected from polyethylene foam plate (PE/EVA), rubber pange plate (CR, EPDM, NBR), plastic foamed plate (PS), rubber-plastic foaming plate, conductive foaming plate, antistatic foam plate one of them, or wantonlyly formed more than two.
Magnetosphere 24, system is made up of a magnetic and a rubber or a plastic material, and the magnetic capacity of magnetosphere 24 is between 2～10, and wherein magnetic and rubber or plastics add up to 100 weight portions, magnetic is 65～95 weight portions (wt%), and rubber or plastics are 5～35 weight portions (wt%).Wherein, magnetic system by iron, buy, nickel and the alloyed powder person of making thereof, and the thickness of each magnetic is between 0.1mm～3mm, the shape of each magnetic system be selected from sheet type, disc or elliptical piece type one of them.In the present embodiment, the shape of magnetic is the sheet type, and sheet type particle size range is 5～35 microns (um), and sheet type thickness range is 0.05～0.25um micron (um).
Below go on to say another embodiment of the present invention, i.e. foaming layer 20 is that first foaming layer 32 and first foaming layer 34 are formed, and magnetosphere 24 is first magnetosphere 36 and second magnetosphere 38, please refer to Fig. 4.
The present invention's UHF radio frequency label 12 comprises a label 18, one first foaming layer 32 and first foaming layer 34 and one first magnetosphere 36 and second magnetosphere 38.First foaming layer 32 and first foaming layer 34 are between label 18 and magnetosphere 24, first foaming layer 32 and first foaming layer 34 be with adhesive agent 26 fit, first magnetosphere 36 is with adhesive agent 26 applyings with second magnetosphere 38, and be first foaming layer 32 to be linked together with label 18, with adhesive agent 26 first foaming layer 34 and first magnetosphere 36 linked together in addition with double faced adhesive tape 22.With adhesive agent 26 second magnetosphere 38 is connected with metal level or non-metallic layer 28.
In the present embodiment, first foaming layer 32 and first foaming layer 34 are to be formed by macromolecular material foaming, the dielectric coefficient of first foaming layer 32 is between 1～1.1 or 1～1.2, the dielectric coefficient of first foaming layer 34 is between 1～1.5, and the density of first foaming layer 32 is that the density of 10～50 kilograms/stere (kg/m3) and first foaming layer 34 is 50～100 kilograms/stere (kg/m3).Wherein, macromolecular material can be selected for use and be selected from polyethylene foam plate (PE/EVA), rubber pange plate (CR, EPDM, NBR), plastic foamed plate (PS), rubber-plastic foaming plate, conductive foaming plate, antistatic foam plate one of them, or wantonlyly formed more than two.
In addition, the foaming layer 20 that the present invention mentions also can be the density of its foaming one scalariform and distribute, promptly density low-＞the density height, a low density side is connected with label, the side that density is high is connected with magnetosphere 24.
Same, the magnetosphere 24 that the present invention mentions, also its magnetic can be distributed density be a scalariform, promptly density low-＞the density height, the low density side of magnetic is connected with foaming layer 20, the side that density is high is connected with metal level or non-metallic layer 28.
UHF radio-frequency (RF) tag proposed by the invention, system as shown in Figure 5, according to the above-mentioned UHF radio frequency label structure of mentioning, learn through the actual experiment test result, the present invention is under desirable test environment, can recover the distance that reads of rfid system original 75～95%,, the recovery effects of certain degree also be arranged if when the general test environment.The present invention finds the magnetic powder material, and also can use suitable expanded material to adjust suitable thickness promptly has the RFID of recovery to read effect, because adopt the expanded material of low cost, so can reduce the cost of manufacture of label significantly, reaches commercial application popularizationization.
Only the above person only is the present invention's preferred embodiment, is not the scope that is used for limiting the invention process.Event is all according to impartial for it variation of the described shape of the present patent application scope, structure, feature and spirit institute or modification, all should be included in the present invention's the claim.
Claims (16)
1, a kind of UHF radio-frequency (RF) tag is characterized in that: comprising:
One label;
One foaming layer is connected with a side of this label, and this foaming series of strata one macromolecular material foaming forms, and its density is 10～100 kilograms/stere (kg/m3);
One magnetosphere, this magnetospheric side is connected with the opposite side of this foaming layer, these magnetic series of strata are made up of a magnetic and a rubber or a plastic material, this magnetic and this rubber or plastics add up to 100 weight portions, this magnetic is 65～95 weight portions (wt%), rubber or plastics are 5～35 weight portions (wt%), and the thickness 0.1mm～3mm of this magnetic, the shape of this magnetic system be selected from sheet type, disc or elliptical piece type one of them.
2, according to 1 described UHF radio-frequency (RF) tag of claim the, it is characterized in that: wherein this foaming layer is connected with an adhesive agent with these magnetic series of strata.
3, according to 1 described UHF radio frequency label of claim the, it is characterized in that: wherein this label is connected with double faced adhesive tape with these foaming series of strata.
4, according to 1 described UHF radio-frequency (RF) tag of claim the, it is characterized in that: comprise that more a metal level or a non-metallic layer are attached at this magnetospheric opposite side with double faced adhesive tape.
5, according to 1 described UHF radio-frequency (RF) tag of claim the, it is characterized in that: wherein this macromolecular material system is selected from polyethylene foam plate (PE/EVA), rubber pange plate (CR, EPDM, NBR), plastic foamed plate (PS), rubber-plastic foaming plate, conductive foaming plate, antistatic foam plate one of them, or wantonlyly formed more than two.
6, according to 1 described UHF radio-frequency (RF) tag of claim the, it is characterized in that: wherein the dielectric coefficient of this foaming layer is between 1～1.5.
7, according to 1 described UHF radio frequency label of claim the, it is characterized in that: wherein this magnetospheric magnetic capacity is between 2～10.
8, according to 1 described UHF radio frequency label of claim the, it is characterized in that: wherein these magnetic series of strata by iron, buy, nickel and the alloyed powder person of making thereof.
9, according to 1 of claim the or the 8th described UHF radio frequency label, it is characterized in that: the sheet type magnetic of this magnetosphere wherein, its sheet type particle size range is 5～35 microns (um), sheet type thickness range is 0.05～0.25um.
10, according to 1 of claim the or the 4th described UHF radio-frequency (RF) tag, it is characterized in that: wherein this foaming layer comprises:
One first foaming layer, its density are 10～50 kilograms/stere (kg/m3), 1 millimeter (mm)～10 of thickness millimeter (mm);
One second foaming layer, its density are 15～75 kilograms/stere (kg/m3), 1 millimeter (mm)～10 of thickness millimeter (mm); And
This first foaming layer and this second foaming series of strata are binded with adhesive agent, and this second foaming layer and this magnetic series of strata are binded with adhesive agent.
11, according to 10 described UHF radio-frequency (RF) tag of claim the, it is characterized in that: wherein this first foaming layer specific inductive capacity is between 1～1.2 or 1～1.1.
12, according to 10 described UHF radio-frequency (RF) tag of claim the, it is characterized in that: wherein this second foaming layer specific inductive capacity is between 1～1.5.
13, according to 1 described UHF radio-frequency (RF) tag of claim the, it is characterized in that: wherein the density of this foaming layer is a scalariform, and the side that this foaming layer density is lower is connected with this label, and the higher side of this foaming layer density is connected with this magnetosphere.
14, according to 1 of claim the or the 13rd described UHF radio frequency label, it is characterized in that: wherein the Density Distribution of this magnetospheric this magnetic is a scalariform, and the side that this magnetosphere density is lower is connected with this foaming layer.
15, according to 14 described UHF radio-frequency (RF) tag of claim the, it is characterized in that: comprise that more a metal level or a non-metallic layer are attached at the higher side of this magnetosphere density with double faced adhesive tape.
16, according to 1 of claim the or the 4th or the 10th described UHF radio frequency label, it is characterized in that: wherein this magnetosphere comprises:
One first magnetosphere, its magnetic capacity is between 2～5;
One second magnetosphere, its magnetic capacity is between 6～10; And
This first magnetosphere and this second magnetic series of strata are binded with adhesive agent, this first magnetosphere and this 1 millimeter (mm)～10 of second magnetospheric gross thickness millimeter (mm), and these first magnetic series of strata are connected with this foaming layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008101105679A CN101599135A (en) | 2008-06-03 | 2008-06-03 | The UHF radio-frequency (RF) tag |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008101105679A CN101599135A (en) | 2008-06-03 | 2008-06-03 | The UHF radio-frequency (RF) tag |
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| CN101599135A true CN101599135A (en) | 2009-12-09 |
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| CNA2008101105679A Pending CN101599135A (en) | 2008-06-03 | 2008-06-03 | The UHF radio-frequency (RF) tag |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104875445A (en) * | 2015-04-30 | 2015-09-02 | 西南科技大学 | Magnetic and conductive rubber elastic body composite material and preparation method thereof |
-
2008
- 2008-06-03 CN CNA2008101105679A patent/CN101599135A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104875445A (en) * | 2015-04-30 | 2015-09-02 | 西南科技大学 | Magnetic and conductive rubber elastic body composite material and preparation method thereof |
| CN104875445B (en) * | 2015-04-30 | 2017-05-17 | 西南科技大学 | Magnetic and conductive rubber elastic body composite material and preparation method thereof |
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Open date: 20091209 |