CN108805249A - The optimization anti-interference method of electronic tag - Google Patents
The optimization anti-interference method of electronic tag Download PDFInfo
- Publication number
- CN108805249A CN108805249A CN201710305999.4A CN201710305999A CN108805249A CN 108805249 A CN108805249 A CN 108805249A CN 201710305999 A CN201710305999 A CN 201710305999A CN 108805249 A CN108805249 A CN 108805249A
- Authority
- CN
- China
- Prior art keywords
- electronic tag
- conductive structure
- structure layer
- layer
- read
- 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.)
- Withdrawn
Links
Classifications
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
- G06K19/00—Record carriers for use with machines and with at least a part designed to carry digital markings
- G06K19/06—Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code
- G06K19/067—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components
- G06K19/07—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components with integrated circuit chips
- G06K19/077—Constructional details, e.g. mounting of circuits in the carrier
- G06K19/07749—Constructional details, e.g. mounting of circuits in the carrier the record carrier being capable of non-contact communication, e.g. constructional details of the antenna of a non-contact smart card
- G06K19/07771—Constructional details, e.g. mounting of circuits in the carrier the record carrier being capable of non-contact communication, e.g. constructional details of the antenna of a non-contact smart card the record carrier comprising means for minimising adverse effects on the data communication capability of the record carrier, e.g. minimising Eddy currents induced in a proximate metal or otherwise electromagnetically interfering object
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Electromagnetism (AREA)
- Computer Hardware Design (AREA)
- Microelectronics & Electronic Packaging (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Shielding Devices Or Components To Electric Or Magnetic Fields (AREA)
Abstract
The invention discloses a kind of optimization anti-interference methods of electronic tag, it is characterized in that in the view field opposite with electronic tag (1) read-write direction, the conductive structure layer (3) that one area is more than electronic tag (1) view field is set in a manner of opposite with electronic tag (1) plane, and it is respectively provided with the electric insulating medium separation layer (2,4) that area is more than conductive structure layer (3) respectively with the opposite side of electronic tag (1) and phase back side in conductive structure layer (3).The beneficial effects of the invention are as follows electronic tag with uninterruptedly only the signal from corresponding read/write device is responded, to achieve the purpose that effectively prevent and eliminates because human body or electrical conductive structure it is close or block to electronic tag correct read/write interference.
Description
Technical field
Interference that the present invention relates to a kind of RFID electronic label in can impact its normal identification, read/write because
Element prevent or removing method.
Background technology
RFID (Radio Frequency Identification, radio frequency identification) electronic tag, because with remote and
Wireless read/write and the function of facilitating modification update recorded information, and the storage that is easy to carry about with one, and have waterproof, moisture-proof, shatter-resistant etc. is excellent
Point is widely adopted first and increasingly in terms of motor vehicle and traffic administration, can significantly improve motor vehicle and traffic pipe at present
Reason is horizontal.By taking the application in terms of mobile management as an example, in actual use, which is typically all to be placed in (patch
Cover) inner face of windshield, to be identified by corollary equipment in charging, statistics, management etc. and read/write.Practice
Middle discovery, due to RFID use radio RF recognition technology own characteristic and limitation, when either intentionally or unintentionally with human body (such as
Hand etc.) or other conductive materials, article it is close or cover the electronic tag, can all make electronic tag is identified and reads/
The microwave signal write generates interference, or even can seriously affect the normal and proper use of of electronic tag.
Invention content
For the above situation, the present invention will provide one kind and can effectively prevent and eliminate the effects of the act the positive common sense of RFID electronic tags
Not, the method for the disturbing factor of read/write.
The optimization anti-interference method of the electronic tag of the present invention, is in the view field opposite with electronic label read-write direction
In, in a manner of opposite with electronic tag plane, the conductive structure layer that an area is more than electronic tag view field is set, and
It is respectively provided with respectively in conductive structure layer and the opposite side (i.e. between conductive structure layer and electronic tag) of electronic tag and phase back side
Area is more than the electric insulating medium separation layer of conductive structure layer.
It tests and shows, described conductive structure layer in above structure, generally to select the good copper of electric conductivity (such as to cover copper
Plate etc.), iron, the materials such as aluminium (such as aluminium foil) or corresponding alloy, conductive rubber lamella, film layer structure be preferred.
It, can shadow after human body or other conductive materials, article are close to electronic tag since human body is conductive
Ring and interfere its to read/write signal it is correct identification and accordingly.Microwave transmission feature used in RFID technique, the present invention
It is provided with after opposite both sides all carry the conductive structure layer of electric insulating medium separation layer at the back side in electronic tag read/write direction
(thickness of electric insulating medium separation layer can and according to the electric circuit characteristic of used electronic tag and/or conductive structure layer and electricity
The material used of dielectric separation layer makees the adjustment of appropriate matching), you can with effectively by the electricity from non-read/write direction
Property disturbing factor and influence shielding and balance out, make electronic tag with uninterruptedly only to the letter from corresponding read/write device
It number responds, effectively prevent and eliminate because human body or electrical conductive structure are close or block correct to electronic tag to reach
The purpose of read/write interference.
Electric insulating medium separation layer at above-mentioned described conductive structure layer two sides, especially conductive structure layer and electronics mark
Sign opposite side, i.e., electric insulating medium separation layer between electronic tag, except may be used such as paper layer, rubber, timber, high score
Outside the common electrically insulating material of the densification entity form or loose foams etc. such as piece, plate of sub- material (such as PVC), using air
Separation layer is a kind of more easy mode, and experimental result is shown, various forms of electric insulating medium separation layers can have base
This identical effect.For the electric insulating medium separation layer of direction side opposite with electronic tag, then with using it is described as cardboard,
Piece, the plate of high molecular material be isopyknic or the common electrically insulating material separation layer such as loose foams is more convenient and practical.
The difference of the factors such as working frequency and/or antenna form used in RFID technique, above-mentioned anti-tampering side
The respective thickness of the electric insulating medium separation layer of two side direction of described conductive structure layer also can difference and change in method.Experiment
The results show that under RFID technical conditions used at present, the electric insulating medium of the conductive structure layer and electronic tag opposite side
The plan range of separation layer 2~14 millimeters of ranges and/or conductive structure layer and electronic tag phase back side electric insulating medium every
The plan range of absciss layer be at least 4 millimeters (it is such as above-mentioned, can be appropriately adjusted according to material used etc., and increase distance can improve
Eliminate the effect of interference) when, can obtain the above-mentioned interference of the satisfied correct read/write of electronic tag that prevents and eliminate the effects of the act because
Element.
Below by way of the specific implementation mode by the embodiment shown in that figure, the above of the present invention is remake further detailed
It describes in detail bright.But the range that this should not be interpreted as to the above-mentioned theme of the present invention is only limitted to example below.On not departing from the present invention
In the case of stating technological thought, the various replacements or change made according to ordinary skill knowledge and customary means should all wrap
It includes within the scope of the invention.
Description of the drawings
Fig. 1 is the schematic diagram of the RFID electronic label anti-interference method of the present invention.
Specific implementation mode
Shown in FIG. 1 is RFID electronic label anti-interference method basic principle of the present invention.To be covered in motor vehicle front gear
For the electronic tag of wind glass inner side application, read/write signal is the corresponding microwave signal that the RFID device of front side is sent out,
In the view field opposite with the read-write direction of electronic tag 1, an area is set in a manner of opposite with 1 plane of electronic tag
More than the conductive structure layer 3 of 1 view field of electronic tag, and in conductive structure layer 3 and 1 opposite side of electronic tag and phase back side point
Be not respectively provided with the electric insulating medium separation layer 2,4 that area is more than conductive structure layer 3, wherein conductive structure layer 3 and electronic tag 1 it
Between electric insulating medium separation layer 2 plan range be 2~14 millimeters, be isolated with the electric insulating medium of 1 phase back side of electronic tag
The plan range of layer 4 is more than 8 millimeters.
To the anti-jamming effectiveness of the above method of the present invention, and the conductive structure layer 3 and difference of different materials is respectively adopted
Influence of the form electric insulating medium separation layer 2 to anti-jamming effectiveness, has carried out following contrast experiments.
Experiment condition：The ceramic substrate-based electronic tag (meeting ISO-18000-6B/C standards) to be worked using uhf-range；
HA-900-12 types antenna and M4 type readers match：Fregaency：900~928MHz
Gain：12.3~12.8dBi
USWR：< 1.30
Impedance(Ω)：50；
Conductive structure layer area：85*54mm,
0.3m
Electronic tag projected area：77*39mm：
Be electrically insulated the plan range of separation layer between conductive structure layer and front electronic tag：7~13mm；
The PVC electric insulation layer thickness at conductive structure layer rear：4~8mm, area：110*78mm.
Experimental method：It is detected from electronic tag rear to electronic tag read/write close to electronic tag with hand or metallic plate
The influence of signal.Each experiment read/write number 1000 times respectively, calculate correct read/write rate.
Experimental result：
One, take with do not take anti-interference method on correctly reading and writing the experiment of influence.
Using the influence to correctly reading and writing in the case of any anti-interference method, to use anti-interference method of the present invention,
In conductive structure layer be copper-clad plate, the separation layer that is electrically insulated between conductive structure layer and electronic tag is air barrier, conductive
The separation layer at structure sheaf rear is PVC board layer.
When not using anti-interference method hand close to when to the interference effect of normal read/write
Using hand when anti-interference method of the present invention close to when to the interference effect of normal read/write
Contrast and experiment shows that, when not using anti-interference method, hand or metallic plate are to being fixed on general-utility car
The influence of windshield is very big, and after anti-interference method using the present invention, the read-write success rate of electronic tag is minimum can
Ensure 70% or more.
Two, the influence using the conductive structure layer of different metal material to anti-tampering effect
It is identical in other conditions in the above-mentioned anti-interference method of the present invention, copper-clad plate, iron sheet is respectively adopted
And masking foil (masking foil i.e. in cigarette case) is used as conductive structure layer, the experiment of anti-tampering performance is different materials conduction knot
Influence of the structure layer to anti-tampering effect the results show that using copper-clad plate, three kinds of different metal materials of iron sheet and masking foil as
Anti-tampering conduction
When structure sheaf, Anti-Jamming is almost the same.The signal being presently considered to be due to 8 meters or so of read/write distances
Relative weaker areas, compared with not taking the normal reading state under anti-interference method and noiseless situation, using present invention side
After method is provided with various forms of anti-tampering conductive structure layers, when read/write distance is 8 meters or so, read/write accuracy is even
All than increasing in the case of normal read/write, show that the conductive structure layer used in the method for the present invention can not only effectively be prevented
Only and the interference of the correct read/write of electronic tag of eliminating the effects of the act, even normal read/write signal can also have been made in a certain range
Enhancing.
Three, influence of the different electric insulating medium separation layers to anti-jamming effectiveness between conductive structure layer and electronic tag
It is identical in other conditions in the above-mentioned anti-interference method of the present invention, conductive structure layer and electronics mark
It is respectively adopted between label by the separation layer of the different electric insulating medium filling forms such as cardboard, foam, PVC and air, anti-tampering effect
Experimental result show, influence of the shown different electric insulating medium separation layer to anti-tampering effect.
In the anti-interference method of the present invention, with the different electric insulating medium filling forms such as cardboard, foam, PVC and air
Separation layer, the correct read/write of electronic tag is not influenced substantially, have the effect of it is almost the same, and under experimental conditions,
The effect of air dielectric can slightly be better than three of the above material.
For convenience of practical application, can be made based on the above-mentioned anti-interference method of the present invention according to above-mentioned experimental result
The corresponding products such as the anti-tampering device of RFID electronic label of cover button are made, can preferably be used common by PVC of suitable thickness etc.
Material makes, wherein the conductive structure of the materials such as a metal is arranged in a manner of maintaining the air barrier of corresponding interval distance
Layer.Further, it can also be bonded to the band anti-interference cover electronic tag being an integral structure to supply with RFID electronic label
It uses.
Claims (4)
1. the optimization anti-interference method of electronic tag, it is characterized in that in the view field opposite with electronic tag (1) read-write direction
In, the conductive structure that an area is more than electronic tag (1) view field is set in a manner of opposite with electronic tag (1) plane
Layer (3), and be respectively provided with area respectively with the opposite side of electronic tag (1) and phase back side in conductive structure layer (3) and be more than conductive tie
The electric insulating medium separation layer (2,4) of structure layer (3).
2. the optimization anti-interference method of electronic tag as described in claim 1, it is characterized in that described conductive structure layer (3) and electricity
The plan range of the electric insulating medium separation layer (2) of subtab (1) opposite side is 2~14 millimeters.
3. the optimization anti-interference method of electronic tag as described in claim 1, it is characterized in that described conductive structure layer (3) and electricity
Plan range >=4 millimeter of the electric insulating medium separation layer (4) of subtab (1) phase back side.
4. the optimization anti-interference method of electronic tag as described in claim 1, it is characterized in that described conductive structure layer (3) is gold
Belong to sheet of material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710305999.4A CN108805249A (en) | 2017-05-05 | 2017-05-05 | The optimization anti-interference method of electronic tag |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710305999.4A CN108805249A (en) | 2017-05-05 | 2017-05-05 | The optimization anti-interference method of electronic tag |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108805249A true CN108805249A (en) | 2018-11-13 |
Family
ID=64053535
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710305999.4A Withdrawn CN108805249A (en) | 2017-05-05 | 2017-05-05 | The optimization anti-interference method of electronic tag |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108805249A (en) |
-
2017
- 2017-05-05 CN CN201710305999.4A patent/CN108805249A/en not_active Withdrawn
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102007644B (en) | Non-contact IC tag | |
| US20110309993A1 (en) | Small-size printed circuit board-printed meander line inverted-f antenna for radio frequency integrated circuits | |
| KR101098263B1 (en) | Nfc loop antenna | |
| CN107808186A (en) | Long-distance wireless radio frequency anti-metal identification label | |
| US20110199272A1 (en) | Field-confined printed circuit board-printed antenna for radio frequency front end integrated circuits | |
| CN102147877A (en) | Electronic tag | |
| CN102521645A (en) | Broadband anti-metal radio-frequency identification tag and special mounting structure for metal surface thereof | |
| CN104463309A (en) | Ultrahigh frequency passive radio frequency identification tag used for automobile windshield | |
| CN201528048U (en) | A microstrip patch antenna | |
| Nikitin et al. | RFID paperclip tags | |
| CN107590525A (en) | A kind of anti-interference RFID | |
| CN202434688U (en) | Near-field communication antenna | |
| CN205354086U (en) | Anti -jamming RFID electronic license plate label | |
| CN108805249A (en) | The optimization anti-interference method of electronic tag | |
| JP6079520B2 (en) | Non-contact IC label | |
| CN102819761B (en) | A kind of ultrahigh frequency anti-metal electronic tag structure with tamper function | |
| CN205427907U (en) | Electronic label | |
| CN209199157U (en) | A kind of passive electronic label | |
| CN101833680A (en) | Anti-interference method of RFID (radio frequency identification) electronic tag | |
| CN206991356U (en) | Solid type electronic tag | |
| CN102346867B (en) | Embedded anti-metallic radio frequency identification label | |
| CN204256770U (en) | The composite structure of a kind of smart card and battery of mobile terminal | |
| CN203689557U (en) | Dual-frequency and dual-purpose anti-metal tag | |
| CN203225348U (en) | PIFA (Planar Inverted-F Antenna) for strong RFID tag | |
| CN205594666U (en) | Electronic license plate label that anti electrically conductive thing disturbed |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| WW01 | Invention patent application withdrawn after publication | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20181113 |