CN102903004A - Passive tag for electronic tag field - Google Patents
Passive tag for electronic tag field Download PDFInfo
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- CN102903004A CN102903004A CN2012103446443A CN201210344644A CN102903004A CN 102903004 A CN102903004 A CN 102903004A CN 2012103446443 A CN2012103446443 A CN 2012103446443A CN 201210344644 A CN201210344644 A CN 201210344644A CN 102903004 A CN102903004 A CN 102903004A
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- antenna
- upper arm
- passive label
- tinsel
- underarm
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Abstract
The application discloses a passive tag which comprises a copper-clad substrate, an antenna and a dielectric slab, wherein the antenna and the dielectric slab are all positioned on the copper-clad substrate; the antenna comprises an antenna upper arm and an antenna lower arm; the antenna upper arm and the antenna lower arm are positioned on the same straight line; a gap is formed between the antenna upper arm and the antenna lower arm; a plurality of metal wires which are parallel to each other and between two of which a gap is formed are arranged on the dielectric slab; the extending direction of the metal wire is parallel to the antenna upper arm and the antenna lower arm; and the separated end parts of the antenna upper arm and the antenna lower arm are respectively connected with two ends of a metal wire in the plurality of metal wires. The passive tag does not have a working threshold, is long in communication distance, safe, reliable, small in size, convenient to process, low in cost and convenient to popularize and use, wherein the cost of a reader-writer can be reduced obviously.
Description
Technical field
The present invention relates to the RFID technical field, relate in particular a kind of passive label.
Background technology
The RFID passive label of industry on electric property, is comprised of an antenna and an IC chip exactly at present.Principle of work and process are:
Read write line passes through the antenna transmission of self with the carrier signal of information (for example reading and writing instruction, status command etc.), is transformed into the electromagnetic wave of surrounding space; Label antenna receives electromagnetic wave from field domain on every side, and changes the electric signal (voltage, electric current etc.) of same frequency into.This electric signal, a part is after the rectification of IC chip, filtering, as the working power of IC chip; A part is through after the demodulation of IC chip, decoding, and as the follow-up work state of instruction decision IC chip, such as information being write the IC chip, perhaps the information with the IC chip-stored returns to read write line; A part is then returned to read write line as required by the IC chip in addition, and the variation of its amplitude (perhaps phase place etc., according to modulation system and difference) has just comprised the information that need to return to read write line.So just finished once complete communication.
By to prior art research, the applicant finds that there is following problem in existing this RFID passive label:
1), the work energy of IC chip, be indirectly to be provided by read write line.During energy shortage that the energy shortage (being that emissive power is large not) that provides when read write line or label antenna receive, the IC chip just can not be worked.It is too far away that this has just determined that label can not leave read write line, and namely the communication distance of the two can not be too far away, namely limited further the use under a lot of environmental baselines.
2), this system is through information processings such as coding, modulation, demodulation, decodings, error code occurs easily, even the efficient that error correction also can cause information to be transmitted is not high.Even can't finish error correction in some cases at all.
3), a very little part in just its electromagnetic energy that receives of label antenna scattering.Thereby affected to a great extent the communication distance of label and read write line.
4), because the transmitting of read write line is not only and carried useful information, but also must provide enough energy for the normal operation of label IC chip, this just provides strict requirement to the Signal coding mode of read write line.Such as not making digital signal behind the coding the continuous low level of long period occur.
5), because the IC chip operation needs a reference voltage, so be not difficult to find out, make the normal operation of IC chip, received electric signal will be sought survival a threshold value, be commonly referred to triggering level.When the electric signal that receives is lower than triggering level, then the IC chip just can't work, and also just can't finish the normal operation between read write line and the label.
6), at present the IC chip has read-write, rewrites function, so institute's canned data is rewritten easily or missed and write, this causes the security of its canned data not high.
7), at present the IC chip can return to the information of read write line, all is to store in advance in read write line or the system server, situation and variation that can not the real-time perception external world.
8), because present IC chip cost is higher, monolithic market price is usually about 0.4 yuan, and is perhaps higher, seriously hindered promoting the use of of RFID.Such as, can't use the RFID passive label at some low-cost petty commodities.
Summary of the invention
In view of this, the embodiment of the present application provides a kind of passive label, the IC chip is not set in this passive label, and the communication distance of this passive label is far away, communication mode is simple, scattering efficiency is high, coded system is flexible, nothing starts thresholding, can't rewrite useful information, and can perception extraneous stress and variation thereof, simultaneously, with low cost, be convenient to promote the use of.
For solving the problems of the technologies described above, the technical scheme that the embodiment of the present application provides is:
A kind of passive label comprises: copper-clad base plate, antenna and dielectric-slab, wherein:
Described antenna and dielectric-slab all are positioned on the described copper-clad base plate;
Described antenna comprises: antenna upper arm and antenna underarm, and described antenna upper arm and antenna lower wall be positioned on the straight line, and be provided with the interval between the two;
Arrange many on the described dielectric-slab and be parallel to each other and spaced tinsel is set each other, and described bearing of trend wiry parallels with described antenna upper arm, antenna underarm;
Described antenna upper arm and antenna underarm end separately are connected with the two ends of a wire in the many described tinsels respectively.
Preferably, described antenna comprises: dipole antenna or microstrip antenna.
Preferably, the tinsel that is connected with described antenna upper arm, antenna underarm is positioned at a plurality of described ragged edges wiry.
Preferably, the mode by welding, Bang Ding or upside-down mounting is connected between described tinsel and described antenna upper arm, the antenna underarm.
Preferably, described copper-clad base plate is for adding the Copper Clad Laminates Based On Polytetrafluoroethylene of glass dust.
Preferably, described tinsel is for being printed on electrically conductive ink on the described dielectric-slab.
Compared with prior art, the beneficial effect that has of the embodiment of the present application is:
1, this label thresholding of not working, the feeble signal of any level value can both make it work.
2, communication distance is far away.The RFID passive label of industry is checked distance and generally all is no more than 40 meters at present; Adopt apparatus of the present invention, communication distance can reach several kilometers to tens kilometers.
3, the read write line of auxiliary work with it need not complicated coding and decoding process, and equipment is simple, be easy to realize.
4, this device scattering efficiency is high, has further guaranteed communication distance.
5, safe and reliable, information can not rewritten.The data that all are useful, be stored in advance in the system equipment or the data of this device real-time Transmission perception to read write line.
6, the temperature equal stress that this device can the real-time perception external world.
7, the size of this device is very little, and area only has about 1/10th of present industry Related product.
8, in this device, the medium and the top tinsel manufacturing thereof that are used for substituting the IC chip are simple, with low cost, are convenient to promote the use of.
Therefore, this passive label that the embodiment of the present application provides, thresholding, communication distance (for the hundreds of of present industry Related product communication distance, thousands of times) far away, cost, the size safe and reliable, that can obviously reduce read write line of not working is little, easy to process, with low cost, be convenient to promote the use of, more be expected to promote the fast development of whole RFID industry.
Description of drawings
In order to be illustrated more clearly in the embodiment of the invention or technical scheme of the prior art, the below will do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art, apparently, accompanying drawing in the following describes only is embodiments of the invention, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain according to the accompanying drawing that provides other accompanying drawing.
The structural representation of a kind of passive label that Fig. 1 provides for the embodiment of the present application.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the invention, the technical scheme in the embodiment of the invention is clearly and completely described.Obviously, described embodiment only is a part of embodiment of the present invention, rather than whole embodiment.Based on the embodiment among the present invention, those of ordinary skills belong to the scope of protection of the invention not making the every other embodiment that obtains under the creative work prerequisite.
The structural representation of a kind of passive label that Fig. 1 provides for the embodiment of the present application.
As shown in Figure 1, this passive label comprises: copper-clad base plate 1, antenna 2 and dielectric-slab 3, wherein: antenna 2 and dielectric-slab 3 all are positioned on the copper-clad base plate 1.
In the embodiment of the present application, the material of copper-clad base plate 1 can adopt the polytetrafluoroethylene fibre plate that adds glass dust, and the thickness of teflon sheet material can be 0.1mm approximately, and length and width is 5mm
As shown in Figure 1, in the embodiment of the present application, antenna 2 comprises: antenna upper arm 21 and antenna underarm 22, and antenna upper arm 21 and antenna lower wall 22 be positioned on the straight line, and be provided with the interval between the two.
In the embodiment of the present application, antenna 2 adopts general dipole antenna, and in the embodiment of the present application, the frequency of operation of antenna 2 is in the ISM band of 2.4GHz, and the total length of antenna is got 2cm.
As shown in Figure 1, many wire 4 are set on the dielectric-slab 3, are parallel to each other between many wire 4, and be provided with the interval between adjacent two wire 4.In addition, the bearing of trend of tinsel 4 parallels with antenna upper arm 21, antenna underarm 22.
In the embodiment of the present application, tinsel 4 can adopt the electrically conductive ink of ink-jet printer printing, and the spacing between the electrically conductive ink can be about 1mm.
Antenna upper arm 21 and antenna underarm 22 end separately are connected with the two ends of a wire 4 in many wire 4 respectively.When reality was used, the tinsel 4 that is connected with antenna 2 was generally one that is arranged in many wire ragged edge.And can be connected by modes such as welding, binding or upside-down mountings between tinsel 4 and antenna upper arm 21, the antenna underarm 22.
This passive label that the embodiment of the present application provides, when work, the signal of the read write line emission that antenna 2 receives is except immediately scattering of a part, another part is introduced in the interphase of medium and air (perhaps Tag Packaging material), forms slow wave and propagates along this interphase.This slow wave arrives each wire place, and a part reflects immediately, and another part continues to propagate along interphase.So in the read write line side, be exactly whenever at regular intervals (the very short time interval), just receive a signal.By the analysis to the length in the time interval between these signals, just can identify the different conditions of different labels and each label.
And because this passive label, the electromagnetic wave that receives is almost all reflected, so the communication distance of passive label is far away, can be the hundreds of of present industry Related product communication distance, thousands of times, and this will expand the application of existing RFID significantly.Require vehicle will slow down first, then will stop before banister such as present ETC (non-parking charge), causing non-parking charge still will stop could charge.And after employing apparatus of the present invention, vehicle can pass through charge station at full speed, and need not to slow down just can regular fee.
And because this passive label does not need to drive oneself work with the electromagnetic wave that receives, so there is not the problem that starts thresholding, very faint signal also can work.
In addition, the time interval between the signal that read write line receives is to be determined by the distance between these tinsels.Stress when the external world when changing such as temperature, can make distance between the tinsel that slightly variation occurs, thus the time interval between these signals corresponding variation also occurs, by the read write line perception.Therefore, suitably adjust the distance between the tinsel, just can distinguish different labels.Yet it should be noted that when extraneous STRESS VARIATION, deformation wiry should not exert an influence to the interval between the tinsel, namely should not be mistaken for another label to a label owing to tinsel deformation, this is realized than being easier in technique.Adopt automatically conduction ink printing such as tinsel.
And because the identification of this passive label mainly is the difference that relies on the signal that produces between the tinsel, so do not comprise software in this passive label, so can't crack, security is higher, stops to crack and copy.And owing to there is not the IC chip, just do not exist information to be rewritten or miss the generation of situation about writing.
On the other hand, when environment temperature or pressure change, tinsel can produce along with environmental evolution deformation, and then so that this passive label, has sensing function, this sensing function is embodied in real time sense temperature, pressure, frequency, concentration etc., just can effectively avoid fire, patient's hyperpiesia, patient's V tach or excessively low, detect gas density and avoid blast etc.
In some examples, if once communication always has 6 reflections (scattering) signal, and 5 time intervals are namely arranged, each is separated with 100 different values (when not considering STRESS VARIATION), then altogether can hold 10,000,000,000 labels in 1 system, capacity is enough.In addition, because the thermal expansivity of general solid dielectric mostly at the ppm order of magnitude, so even 100 different values are got at each interval, in the time of can not causing the temperature equal stress to change, a certain label is misread as another label, has guaranteed the accuracy of system.
In addition, according to the size of the each several part material that provides in the embodiment of the present application, the size of this passive label that finally obtains is approximately 21mm * 6mm, and in addition, this passive label that finally obtains can also encapsulate as shell with PVC, PC or ABS etc.
This passive label that the embodiment of the present application provides, whole label, in the situation that does not contain encapsulation, about 0.1 yuan of cost.And present industry does not contain the label (comprising the IC chip) of encapsulation, and its cost approximately is 0.65 yuan.
Compared with prior art, the beneficial effect that has of the embodiment of the present application is:
1, this label thresholding of not working, the feeble signal of any level value can both make it work.
2, communication distance is far away, and the RFID passive label of industry is checked distance and generally all is no more than 40 meters at present; Adopt apparatus of the present invention, communication distance can reach several kilometers to tens kilometers.
3, the read write line of auxiliary work with it need not complicated coding and decoding process, and equipment is simple, be easy to realize.
4, this device scattering efficiency is high, has further guaranteed communication distance.
5, safe and reliable, information can not rewritten.The data that all are useful, be stored in advance in the system equipment or the data of this device real-time Transmission perception to read write line.
6, the temperature equal stress that this device can the real-time perception external world.
7, the size of this device is very little, and area only has about 1/10th of present industry Related product.
8, in this device, the medium and the top tinsel manufacturing thereof that are used for substituting the IC chip are simple, with low cost, are convenient to promote the use of.
Therefore, this passive label that the embodiment of the present application provides, thresholding, communication distance (for the hundreds of of present industry Related product communication distance or thousands of times) far away, cost, the size safe and reliable, that can obviously reduce read write line of not working is little, easy to process, with low cost, be convenient to promote the use of, more be expected to promote the fast development of whole RFID industry.
Should be understood that simultaneously the present invention's scope of asking for protection is illustrated in the appended claims, and can not be with the foregoing description of instructions as restriction, every apparent modification within aim of the present invention is also due within protection scope of the present invention.
To the above-mentioned explanation of the disclosed embodiments, make this area professional and technical personnel can realize or use the present invention.Multiple modification to these embodiment will be apparent concerning those skilled in the art, and General Principle as defined herein can in the situation that does not break away from the spirit or scope of the present invention, realize in other embodiments.Therefore, the present invention will can not be restricted to these embodiment shown in this article, but will meet the widest scope consistent with principle disclosed herein and features of novelty.
Claims (6)
1. a passive label is characterized in that, comprising: copper-clad base plate, antenna and dielectric-slab, wherein:
Described antenna and dielectric-slab all are positioned on the described copper-clad base plate;
Described antenna comprises: antenna upper arm and antenna underarm, and described antenna upper arm and antenna lower wall be positioned on the straight line, and be provided with the interval between the two;
Arrange many on the described dielectric-slab and be parallel to each other and spaced tinsel is set each other, and described bearing of trend wiry parallels with described antenna upper arm, antenna underarm;
Described antenna upper arm and antenna underarm end separately are connected with the two ends of a wire in the many described tinsels respectively.
2. passive label according to claim 1 is characterized in that, described antenna comprises: dipole antenna or microstrip antenna.
3. passive label according to claim 2 is characterized in that, the tinsel that is connected with described antenna upper arm, antenna underarm is positioned at a plurality of described ragged edges wiry.
4. passive label according to claim 1 is characterized in that, the mode by welding, binding or upside-down mounting between described tinsel and described antenna upper arm, the antenna underarm is connected.
5. passive label according to claim 1 is characterized in that, described copper-clad base plate is for adding the Copper Clad Laminates Based On Polytetrafluoroethylene of glass dust.
6. passive label according to claim 1 is characterized in that, described tinsel is for being printed on electrically conductive ink on the described dielectric-slab.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012103446443A CN102903004A (en) | 2012-09-18 | 2012-09-18 | Passive tag for electronic tag field |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012103446443A CN102903004A (en) | 2012-09-18 | 2012-09-18 | Passive tag for electronic tag field |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102903004A true CN102903004A (en) | 2013-01-30 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012103446443A Pending CN102903004A (en) | 2012-09-18 | 2012-09-18 | Passive tag for electronic tag field |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6547140B2 (en) * | 2000-11-29 | 2003-04-15 | Xerox Corporation | Microwave barcode reader using dipole antenna |
| US20070046465A1 (en) * | 2005-08-25 | 2007-03-01 | Isao Sakama | Anntenna apparatus |
| CN102567779A (en) * | 2012-01-05 | 2012-07-11 | 天津理工大学 | Surface acoustic wave radio frequency identification tag of interdigital transducer / zinc oxide / aluminum (IDT / ZnO / AL) / diamond multilayer membrane structure |
| CN102663466A (en) * | 2012-03-06 | 2012-09-12 | 天津大学 | Surface acoustic wave label |
-
2012
- 2012-09-18 CN CN2012103446443A patent/CN102903004A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6547140B2 (en) * | 2000-11-29 | 2003-04-15 | Xerox Corporation | Microwave barcode reader using dipole antenna |
| US20070046465A1 (en) * | 2005-08-25 | 2007-03-01 | Isao Sakama | Anntenna apparatus |
| CN102567779A (en) * | 2012-01-05 | 2012-07-11 | 天津理工大学 | Surface acoustic wave radio frequency identification tag of interdigital transducer / zinc oxide / aluminum (IDT / ZnO / AL) / diamond multilayer membrane structure |
| CN102663466A (en) * | 2012-03-06 | 2012-09-12 | 天津大学 | Surface acoustic wave label |
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Application publication date: 20130130 |