CN201820255U

CN201820255U - Anti-interference electronic tag for vehicles

Info

Publication number: CN201820255U
Application number: CN2010205454262U
Authority: CN
Inventors: 徐基仁; 蓝光维; 刘光渝
Original assignee: Chengdu Xingtongdawei Electronics Technology Co Ltd
Current assignee: Chengdu Xingtongdawei Electronics Technology Co Ltd
Priority date: 2010-09-28
Filing date: 2010-09-28
Publication date: 2011-05-04
Anticipated expiration: 2020-09-28

Abstract

Disclosed is an anti-interference electronic tag for vehicles. A wafer and a microstrip circuit connected with the wafer are arranged on a substrate unit, and the microstrip circuit is further electrically connected with a metal shielding structure layer with a covering range not smaller than the microstrip circuit via a communication structure. The electronic tag can effectively prevent or weaken interference to reading and writing performance of the tag due to the fact that human bodies or other conductive materials and objects are close to or cover the electronic tag when used. The anti-interference electronic tag not only can guarantee normal operation on the status without being interfered by close objects, but also can be effectively used when in interference of the close objects, meets function requirements and is obvious in effect.

Description

Anti-tampering auto electronic label

Technical field

The utility model relates to a kind of electronic tag, particularly can have the auto electronic label of anti-tampering function.

Background technology

RFID (radio frequency identification) electronic tag has remote and radio read-write and the convenient function of revising all recorded informations of renewal, and is easy to carry about with one and deposits, and advantages such as waterproof, protection against the tide, shatter-resistant are arranged, and is widely used in motor vehicle and traffic administration.But in actual use owing to all be that electronic tag is installed in the windshield inboard generally, as human body or other conductive material, object near or when covering this electronic tag, the capital produces the microwave signal that electronic tag is discerned and read and write and disturbs, even can have a strong impact on the normal use of electronic tag.

The utility model content

At above-mentioned interference problem, the utility model provides a kind of jamming-proof auto electronic label, can improve the literacy of electronic tag when interference is arranged.

Anti-tampering auto electronic label, the microstrip circuit that on substrate unit, is provided with brilliant unit and is attached thereto, this microstrip circuit also is electrically connected the metallic shield structural sheet that a scope of covering is not less than microstrip circuit by UNICOM's structure.Test findings shows, can reduce the scattering strength of microwave by this shielding construction layer with original microstrip circuit UNICOM, strengthen positive reflection potential, make itself and brilliant unit can realize microwave signal is had the optimum matching effect of the strongest read-write intensity, thereby assurance can normally be read and write when human body or other object are close.

In the said structure, said this shielding construction layer can be the form of an additional microstrip circuit.Its material and/or system of laying can adopt the same form of microstrip circuit in the existing electronic tag.

In addition, described shielding construction layer also can be adopted as reticulate texture.Perhaps,

This shielding construction also can produce the suitable mode of same shielding action and effect for compact texture layer or other.

Test shows that above-mentioned shielding construction layer is good to adopt good conductor of electricity structural sheets such as copper or silver.

On the said structure basis, this substrate unit in the said electronic tag can be made of the simplest individual insulating material substrate, and said this shielding construction layer and microstrip circuit then are located at respectively on the two opposing side planes of this substrate.Said insulating material can be PVC, ABS etc. commonly used.

In addition, the substrate unit in the above-mentioned electronic tag can also be made of relatively and by the insulating material substrate of insulating medium positioned at intervals setting at least two sheet of planar, and described shielding construction layer is located at planimetric positions different in the substrate unit respectively with microstrip circuit and is located.Said insulating medium can be insulating material or air such as PVC, ABS equally.In the substrate unit that is made of a plurality of substrates, the physical dimension of each substrate or material can be identical or different.The material of each substrate, thickness or size all are not particularly limited.

In the substrate unit that the above-mentioned said substrate relative by at least two sheet of planar constitutes, the simplest a kind of mode is that described microstrip circuit is arranged on the lateral surface in the substrate unit, and this shielding construction layer is arranged on another lateral surface of substrate unit.

When the substrate unit that constitutes by a plurality of substrates, can adopt between each substrate to connect firmly structure or the non-structure that connects firmly.Connecting firmly structure can be with bonding, and modes such as riveted joint make each substrate fit by insulating medium becomes an integral body; The non-structure that connects firmly can be to make the substrate relative positioning and be combined as an integral body separately with said insulating medium in the mounting groove of cartridge/frame, or fits behind the dice spaced insulating medium and plastic packaging becomes as a whole.

Above-mentionedly realize UNICOM's structure of being electrically connected, can irritate a kind of in the modes such as silver, also can be other suitable electrical connection UNICOM form for connecting line commonly used, the silver-colored external application of the back of the body or boring at microstrip circuit and each screen layer.In addition, the concrete form of its mutual UNICOM, it is multi-form also can be adopted as series, parallel commonly used in circuit structure or series/parallel mixing etc. as required.

Experimental result shows, in the anti-tampering auto electronic label of the utility model, can make microstrip circuit and shielding construction layer form the two poles of the earth of an integrated antenna by UNICOM's structure, can the transmission direction of appropriate change microwave signal, reduce the microwave energy scattering, stop the influence of interference source to label, increase positive microwave reflection ability, and make itself and wafer can realize better mutual coupling, strengthen the electronic label read-write effect, thereby can effectively prevent or weaken electronic tag in use because of human body or other conductive material, object near or the influence that the label readwrite performance produced when covering, reach and prevent nearly thing effects of jamming.Except that the normal use that guarantees electronic tag under no nearly thing disturbance state, can also when having nearly thing to disturb, effectively use electronic tag, satisfied the functional requirement of electronic tag, effect is obvious.

Below in conjunction with embodiment, foregoing of the present utility model is described in further detail again by the accompanying drawing illustrated embodiment.But this should be interpreted as that the scope of the above-mentioned theme of the utility model only limits to following example.Do not breaking away under the above-mentioned technological thought situation of the utility model, various replacements or change according to ordinary skill knowledge and customary means are made all should be included in the scope of the present utility model.

Description of drawings

Fig. 1 is the cross-sectional view of a kind of one-piece construction of the anti-tampering auto electronic label of the utility model.

Fig. 2 is the Facad structure synoptic diagram of Fig. 1.

Fig. 3 is the cross-sectional view of a kind of multiple-piece structure of the anti-tampering auto electronic label of the utility model.

Embodiment

Embodiment 1

Illustrated in figures 1 and 2 is the structure of the anti-tampering auto electronic label of a kind of one chip of the present utility model, substrate unit is made of customary insulation material base 1 such as individual PVC, ABS, brilliant unit 4 and the microstrip circuit 2 that is attached thereto are arranged on a side of substrate 1, the another side is laid with additional 3, two microstrip circuits of silver-colored microstrip circuit that apply as screen layer in a usual manner and is electrically connected as a whole solid type microstrip circuit by the silver-colored external application of the back of the body or the UNICOM's structures such as irritating silver 8 of holing.Fig. 2 is the positive form of this electronic tag.

Embodiment 2

Shown in Figure 3 is the cross-section structure of a kind of cartridge of the present utility model or the anti-tampering auto electronic label of card frame multiple-piece.Substrate unit by cartridge 7 and interior with the plane relatively and through PVC, the multi-disc substrate 1 of non-conductive materials such as ABS 6 location constitutes, therebetween with PVC, non-conductive material such as ABS or directly air dielectric is separately, microstrip circuit 2 and as one of screen layer additional applying on the lateral surface that silver-colored microstrip circuit 3 is separately positioned on outermost two substrates 1 in the substrate unit (also can lay the shielding construction layer again when needing on the middle suitable substrate), microstrip circuit in each substrate 1 all electrically connects as an integral body with UNICOM's structure 8 of connecting line mode, by cartridge or card frame the substrate unit plastic packaging is formed holistic electronic tag at last.

Claims

1. anti-tampering auto electronic label, the microstrip circuit (2) that is provided with brilliant unit (4) and is attached thereto on substrate unit is characterized by this microstrip circuit (2) and also is electrically connected the metallic shield structural sheet (3) that a scope of covering is not less than microstrip circuit (2) by UNICOM's structure (8).

2. electronic tag as claimed in claim 1, it is characterized by described shielding construction layer (3) is an additional microstrip circuit.

3. electronic tag as claimed in claim 1, it is characterized by described shielding construction layer (3) is reticulate texture.

4. electronic tag as claimed in claim 1, it is characterized by described shielding construction layer (3) is the compact texture layer.

5. as the described electronic tag of one of claim 1 to 4, it is characterized by described shielding construction layer (3) is copper or silver-colored structural sheet.

6. electronic tag as claimed in claim 5 is characterized by described substrate unit and is made of individual insulating material substrate (1), and said shielding construction layer (3) is located at respectively on the two opposing side planes of this substrate (1) with microstrip circuit (2).

7. electronic tag as claimed in claim 5, it is characterized by described substrate unit and be made of relatively and by the insulating material substrate (1) that insulating medium (6) positioned at intervals is provided with at least two sheet of planar, shielding construction layer (3) is located at places, planimetric position different in the substrate unit respectively with microstrip circuit (2).

8. electronic tag as claimed in claim 7 is characterized by on the lateral surface that described microstrip circuit (2) is arranged on substrate unit, and shielding construction layer (3) is arranged on another lateral surface of substrate unit.

9. electronic tag as claimed in claim 7 is characterized by between each substrate (1) in the substrate unit to adopt and connects firmly structure or the non-structure that connects firmly.

10. as the described electronic tag of one of claim 1 to 4, it is characterized by described UNICOM structure (8) and irritate silver-colored structure for connecting line, the silver-colored external application of the back of the body or boring.