CN201886504U - Small-volume remote passive electronic tag capable of being attached on metal surface - Google Patents
Small-volume remote passive electronic tag capable of being attached on metal surface Download PDFInfo
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- CN201886504U CN201886504U CN2010206305674U CN201020630567U CN201886504U CN 201886504 U CN201886504 U CN 201886504U CN 2010206305674 U CN2010206305674 U CN 2010206305674U CN 201020630567 U CN201020630567 U CN 201020630567U CN 201886504 U CN201886504 U CN 201886504U
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- metal surface
- substrate
- isolator
- electronic tag
- passive electronic
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Abstract
The utility model discloses a small-volume remote passive electronic tag capable of being attached on a metal surface, which comprises a packaging box (3), an isolator (1), a cushion block (7), a substrate (6) and a chip (5). The isolator (1) is fixed on a base (2) of the packaging box (3), the substrate (6) is placed on the isolator (1) and separated from the isolator (1) via the cushion block (7), the packaging box (3) is sealed by a cover plate (4), the chip (5) is firmly adhered on the substrate (6), a microstrip antenna (9) and a match circuit (8) are further arranged on the substrate (6), and two electrodes of the chip (5) are respectively connected with the microstrip antenna (9) via the match circuit (8). The small-volume remote passive electronic tag has the advantages of small volume, long recognition distance, capability of being attached on the metal surface, and the like, and can be applied to carriers such as metal vehicles, containers, bulletproof and explosion-proof windshields, metal aeronautical materials, military hardware and the like.
Description
Technical field
The utility model relates to a kind of passive electronic label, particularly relates to a kind of remote passive electronic label of small size that is affixed on the metal surface.
Background technology
Characteristics such as REID (RFID) is fast with recognition speed, precision is high, need not to contact, environmental suitability is strong and be subjected to the favor of encased conveying industry, obtained fast development, and apply to communications and transportation gradually, " Internet of Things " fields such as the management of aviation parcel, logistics management, production line control automatically, entrance guard management, material processing, medical treatment.Radio-frequency recognition system mainly is made up of four parts, i.e. electronic tag, read write line and antenna thereof and computing machine (intelligent controller).Power supply mode difference when working according to electronic tag can be divided into electronic tag passive, half passive and active electronic label, and this electronic tag belongs to passive electronic label, and its typical structure is made up of label chip, label antenna and tag substrate three parts.
Existing UHF ultrahigh frequency electronic tag, though what have can be affixed on the metal surface, but decipherment distance is nearer, in some applications as military affairs in " Internet of Things " and industrial logistics management etc., require the UHF electronic tag can be installed on metal surface such as container, have shellproof or explosion-proof front windshield surface, metal aeronautical material, weaponry etc., also want cube little simultaneously (less than 60 * 15 * 10mm), decipherment distance (as greater than 3m) far away, existing electronic tag is difficult to reach simultaneously these index requests.
The utility model content
The purpose of this utility model promptly is to overcome the deficiencies in the prior art, and a kind of remote passive electronic label of small size that is affixed on the metal surface is provided, to satisfy little, the identification and can be affixed on application requirements such as metal surface at a distance of volume.
A kind of remote passive electronic label of small size that is affixed on the metal surface, it comprises packing box, isolator, cushion block, substrate and radio-frequency (RF) identification chip, isolator is fixed on the base of packing box, substrate places above the isolator, be provided with cushion block between substrate and the isolator, the packing box cover plate for sealing, radio-frequency (RF) identification chip sticks on the substrate of label securely, also be furnished with microstrip antenna and match circuit on the substrate, two electrodes of radio-frequency (RF) identification chip are connected with microstrip antenna by match circuit respectively.
Isolator plays a part the isolating metal surface to the influence of electronic tag with dwindle its volume, because if when directly being attached at electronic tag on the metal surface, because the metal surface to " short circuit " of incident electromagnetic wave, makes the electronic tag can't operate as normal; If it is improper to design, because the metal surface is to the reflex of incident electromagnetic wave, also pass electronic tag with having stronger opposite direction electromagnetic wave, incident wave and reflection wave stack form synthetic field signal, the spacing of electronic tag and metal surface directly influences both phase differential, if this spacing design is improper, both synthetic field signals will be offset a part, and intensity also can weaken greatly, have a strong impact on the read distance of read write line, even can't read the data on the electronic tag electronic tag.The solution of eliminating the metal covering influence is to increase the microstrip antenna of electronic tag and the spacing between the metal covering, increase along with spacing, synthetic field signal vector will strengthen gradually, when this spacing be increased to wavelength 1/4 the time, synthetic field signal vector reaches maximum, and the microstrip antenna gain can increase about 3dB.The a lot of application do not allow the volume of electronic tag too big.So the thickness of electronic tag is restricted.Adopt the such key Design of isolator, can reduce the influence of metal surface greatly to electronic tag, reach improve reading/writing distance and dwindle electronic tag and metal covering between spacing, thereby the double effects of reduced volume, for this reason, we select special high-performance wave-absorbing material as isolator.
The microstrip antenna circuit that described match circuit connects to form for the trapezoidal microstrip line by positive and negative alternate, trapezoidal waist is 45 °.Because the electronic label antenna characteristic is subjected to the influence to the reflection of the specific inductive capacity of the distance of the object of labelling, label institute installation material surface, metal surface and spacer medium parameter etc. of the shape of the object of installing and physical characteristics, label, when common label was attached at metal covering, originally Pi Pei antenna became and has no longer mated.The target of Antenna Design is the maximum energy turnover of transmission, and the antenna matching degree is high more, and the radiance of antenna is good more.This need well-designed microstrip antenna and with the selection of spacing, isolator and the material thereof of match circuit, microstrip antenna and the metal surface of chip.The electronic label antenna of UHF ripple frequency range generally adopts the microstrip antenna form, and in traditional microstrip antenna designs, we can pass through control antenna size and structure, perhaps use the impedance matching converter that its input impedance and feeder line are complementary.And the electronic tag of large-scale production, the very difficult accurate data of measuring the chip impedance under its duty; Characteristics such as its input impedance, directional diagram are subject to processing the influence of precision, dielectric-slab purity easily.When keeping antenna performance, antenna and chip impedance are complementary, take into account the influence of metal covering, this is a main difficult point that can be affixed on metal surface electronic label antenna design, and the match circuit that the microstripline that the trapezoidal microstrip line by positive and negative alternate of the utility model design connects to form constitutes, its trapezoidal waist is 45 °, has then creatively captured this difficult problem.
Described microstrip antenna is asymmetric dipole antenna, and the effect of asymmetrical antenna is the volume that further dwindles electronic tag.Be provided with cushion block between substrate and isolator, the increase and decrease of the thickness of cushion block is used for adjusting the phase place of the incident electromagnetic wave reflection electromagnetic wave of electronic tag, guarantees that two kinds of electromagnetic wave signal intensity superpose, rather than subtracts each other.
Described microstrip antenna is the bending antenna, and bending also is in order to dwindle the volume of electronic tag.
The beneficial effects of the utility model are: electronic tag can be affixed on the metal surface, its volume is little, distance identification is far away, far above the decipherment distance of existing electronic tag under the equal volume, be applicable to limited space metal car body, container, have applications such as shellproof explosion-proof front windshield, metal aeronautical material and weaponry.
Description of drawings
Among the on-chip circuit structure diagram Fig. 3 of Fig. 1 the utility model side view cutaway drawing Fig. 2 workflow diagram figure of the present utility model, 1-isolator, 2-base, 3-packing box, 4-cover plate, 5-radio-frequency (RF) identification chip, 6-substrate, 7-cushion block, 8-match circuit, 9-microstrip antenna.
Embodiment
Below in conjunction with accompanying drawing the technical solution of the utility model is described further: as Fig. 1, a kind of remote passive electronic label of small size that is affixed on the metal surface, it comprises packing box 3, isolator 1, cushion block 7, substrate 6 and radio-frequency (RF) identification chip 5, isolator 1 is fixed on the base 2 of packing box 3,4 sealings of packing box 3 usefulness cover plates, substrate 6 places above the isolator 1, separates with a plurality of cushion blocks 7 between substrate 6 and the isolator 1, and radio-frequency (RF) identification chip 5 sticks on the substrate 6 securely.
As Fig. 2, be furnished with microstrip antenna 9 and match circuit 8 on the substrate 6, two electrodes of radio-frequency (RF) identification chip 5 are connected with microstrip antenna 9 by match circuit 8 respectively, match circuit 8 is a microstripline, by positive and negative alternate and waist is that 45 ° trapezoidal microstrip line connects to form, microstrip antenna 9 is asymmetric half-wave dipole bending antenna, and radio-frequency (RF) identification chip 5 is made up of rectifier, modulator, detuner and digital circuit with deal with data logic and memory function.
As Fig. 3, principle of work of the present utility model is as follows: the read write line of rfid system is launched modulated RF signals through antenna; When electronic tag described in the utility model enters the reach of the read write line of rfid system and antenna thereof with carrier, receive modulated RF signals by microstrip antenna, rectifier in the chip converts the part of the radio-frequency (RF) energy of modulated RF signals to dc energy, be label chip circuit power supply on the substrate, the chip detuner demodulates data and clock signal from modulated RF signals, and chip memory is passed to the related data information (comprising ID number) of its storage the answer signal of modulators modulate electronic tag passback; Electronic tag is transferred to read write line by microstrip antenna with answer signal; Read write line receives answer signal through antenna, behind the demodulation sign indicating number, give computing machine, computing machine therefrom extracts related data information (comprising ID number), add the place of RFID application system and time that label passes through etc. simultaneously, pass to the Center For Information Management of application system by communication network, finished the data information exchange between RFID application system and the label like this.
Electronic tag of the present utility model works in 920.5-924.5MHZ, and its memory capacity is 1024bit, and wherein 96bit has the unique ID in the whole world number; It can be affixed on the metal surface, and without powered battery, the life-span can reach 10 years, and its volume ratio is less, has only 53 * 10 * 7mm
3, decipherment distance is far away, and under read write line emission peak power≤1W, reading and writing device antenna gain 11db condition, its recognition distance is greater than 5 meters; As being increased, volume is 234X16X18mm
3, its recognition distance can reach 24m above (user's actual measurement is 37.5m).
Further specify technique effect of the present utility model below in conjunction with test figure, wherein, the read write line of test usefulness is the UAP2100 read write line, antenna is the dull and stereotyped linear polarized antenna of PA3110, computing machine is 1580 Zhaoyang of Legend's computing machines, and high-temperature test chamber is the DGF3006 high-temperature test chamber, and low-temperature test chamber is the WD7050 low-temperature test chamber, the electric vibrating system is a V810 electric vibrating system, test findings such as following table:
In the table, the volume of 1～No. 5 electronic tag is 53X10X8mm
3, the utility model is in frequency 902MHZ-928MHZ scope as can be seen from the table, and decipherment distance is more than 5m,-25 ℃ keep half an hour and then+40 ℃ keep half an hour after, and after standing high-intensity vibration, still working properly, illustrate that the utility model performance is very stable.
Claims (1)
1. remote passive electronic label of small size that can be affixed on the metal surface, it is characterized in that: it comprises packing box (3), isolator (1), cushion block (7), substrate (6) and radio-frequency (RF) identification chip (5), isolator (1) is fixed on the base (2) of packing box (3), substrate (6) places above the isolator (1), be provided with cushion block (7) between substrate (6) and the isolator (1), packing box (3) seals with cover plate (4), radio-frequency (RF) identification chip (5) sticks on the substrate (6) securely, also be furnished with microstrip antenna (9) and match circuit (8) on the substrate (6), two electrodes of radio-frequency (RF) identification chip (5) are connected with microstrip antenna (9) by match circuit (8) respectively.
2, a kind of remote passive electronic label of small size that is affixed on the metal surface according to claim 1 is characterized in that: the microstripline that described match circuit (8) connects to form for the trapezoidal microstrip line by positive and negative alternate.
3, a kind of remote passive electronic label of small size that is affixed on the metal surface according to claim 2, it is characterized in that: the waist of described trapezoidal microstrip line is 45 °.
4 a kind of remote passive electronic labels of small size that are affixed on the metal surface according to claim 1, it is characterized in that: described microstrip antenna (9) is asymmetric dipole antenna.
5, a kind of remote passive electronic label of small size that is affixed on the metal surface according to claim 1, it is characterized in that: two arms of described microstrip antenna (9) are except that match circuit, and all the other are bending line.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206305674U CN201886504U (en) | 2010-11-29 | 2010-11-29 | Small-volume remote passive electronic tag capable of being attached on metal surface |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206305674U CN201886504U (en) | 2010-11-29 | 2010-11-29 | Small-volume remote passive electronic tag capable of being attached on metal surface |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201886504U true CN201886504U (en) | 2011-06-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010206305674U Expired - Fee Related CN201886504U (en) | 2010-11-29 | 2010-11-29 | Small-volume remote passive electronic tag capable of being attached on metal surface |
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| CN (1) | CN201886504U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103136568A (en) * | 2011-11-25 | 2013-06-05 | 众睿科技有限公司 | Pipe tracking device and pipe with same |
| CN103679247A (en) * | 2012-08-30 | 2014-03-26 | 苏州数伦科技有限公司 | Electronic tag capable used for metal product |
| JP2019533860A (en) * | 2016-10-28 | 2019-11-21 | エイヴェリー デニソン リテール インフォメーション サービシズ リミテッド ライアビリティ カンパニー | RFID tags designed to function on difficult substrates |
-
2010
- 2010-11-29 CN CN2010206305674U patent/CN201886504U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103136568A (en) * | 2011-11-25 | 2013-06-05 | 众睿科技有限公司 | Pipe tracking device and pipe with same |
| CN103679247A (en) * | 2012-08-30 | 2014-03-26 | 苏州数伦科技有限公司 | Electronic tag capable used for metal product |
| JP2019533860A (en) * | 2016-10-28 | 2019-11-21 | エイヴェリー デニソン リテール インフォメーション サービシズ リミテッド ライアビリティ カンパニー | RFID tags designed to function on difficult substrates |
| US11581624B2 (en) | 2016-10-28 | 2023-02-14 | Avery Dennison Retail Information Services Llc | RFID tags designed to work on difficult substrates |
| JP7227902B2 (en) | 2016-10-28 | 2023-02-22 | エイヴェリー デニソン リテール インフォメーション サービシズ リミテッド ライアビリティ カンパニー | RFID tags designed to work on difficult substrates |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110629 Termination date: 20131129 |