Electronic label

FIELD: engineering and production of electronic labels, in particular, ones meant for attachment to metallic objects.

SUBSTANCE: one of characteristics of electronic labels is that reading and recording during their utilization can be performed without mechanical contact with communication frame (antenna). In this case reading head is set at some distance from label and interacts with is by means of magnetic waves. When such labels are positioned on metallic objects, reading becomes obstructed or even impossible due to dispersion of waves in the object. Invention makes it possible to prevent such a drawback because antenna is equipped with electromagnetic component meant for isolation of antenna and thus for improving receipt quality.

EFFECT: improved quality of receipt.

2 cl, 2 dwg

 

The technical field to which the invention relates.

The present invention relates to electronic labels, in particular to electronic labels, designed to attach to metal objects.

The level of technology

Under the electronic label in this description refers to the device (node), which contains at least one base, the antenna and an electronic chip. If necessary, such a device can contain multiple antennas or multiple chips. These devices exist in the form of buttons, smart cards ("smart cards") and even the Luggage labels. Due to the presence of antennas they can communicate with a remote reading device. Antenna (for example, in the form of a framework not only serves as a means of communication, but also can be used for energy, which needs to be nurtured by an electronic chip.

Some of the labels of the specified type does not contain electronic chips, but are passive elements such as resistors or fuses. These labels are used, for example, in devices of theft prevention.

Depending on implementation, the antenna can be attached to a flexible base or directly engraved or cut on it.

There are numerous variants of the chips differ in their functions. the example some of them provide only reading of information, while others allow you to save data and make changes in memory. The latest chip type are used, inter alia, as electronic wallets, the contents of which for obvious reasons should decrease depending on consumption of the user.

Another important area of application is the identification of objects. Indeed, in the cycle of automatic production, it is necessary that the corresponding machine knew exactly what the component is in front of him. Existing for such applications, the trend is to replace bar-code labels on labels, equipped with an electronic chip. This label not only provides identification of the object, but also solves the inverse problem, i.e. allows the object to remember made over it operations.

However, in applications of the type described is the problem, due to the nature of the object. It is related to the fact that these labels operate on the principle circuit of the magnetic field, i.e. the presence of nearby metallic mass, absorbing the waves, carrying out communication, creating interference for their work.

In order to eliminate this disadvantage, it is necessary to restore communications to bring the reader up to a distance of a few mill is meters.

It is easy to imagine that for some applications, for example, associated with products having a complex contour that is similar to the restriction on the distance can be a significant disadvantage.

Known solutions, according to which the label contains conductive layer. Such a layer is described, for example, in the patent document US 5920290, where one of the presented options, the device contains an antenna and a sheet of conductive material to create a resonant circuit. The purpose of this sheet, which can be formed as a metal or carbon coating, suggests that on purpose, and execution, it is significantly different from the object of the present invention.

Other documents describe the use of the conductive layer inside the e-label for the formation of conductive paths that provide routing of electrical signals. An example is the document WO 00/03354 related to manufacturing of electronic tags by assembling the various layers. Any mention of the function of magnetic reflector in relation to these conductive layers are missing.

In document WO 00/25263 describes how to protect the transponder from static electric discharges. This protection is provided by using a sheet of semiconductor material applied to a section of whom is unications frame (i.e. coil antenna). In the result between the coils of the frame is formed of the diode limiter. In other words, the sheet forms a filter designed to eliminate spurious signals generated by static discharge or electromagnetic interference that can degrade the quality of the transponder. Therefore, a similar sheet of semiconductor in any case can not be magnetic reflector because it's role, by contrast, is limited by the attenuation or absorption of unwanted electromagnetic signals. While the document does not mention at the reflection of the electromagnetic field of any component of the transponder or possible problems associated with the presence of a base in the area of location of the transponder.

The invention

The problem to which the present invention is directed, is to create an electronic label, which has the reading distance substantially increased in order to allow less accurate installation of the read head.

The above problem is solved by creating electronic label containing at least one electronic element and the frame and characterized by the presence on one of its sides magnitootrazheniya component. Under the electronic component in the context of applications is an electronic chip or a passive element, is the aka as a fuse or a resistor.

Specified magnitootrazheniya component is installed on the side opposite the side which transmits radiation from the reader device. Due to the presence of this component of the magnetic field is reflected in the direction of the reader instead dissipated in the metal object.

However, a significant role is played by the position and shape of the specified component.

In accordance with one variant of the invention magnitootrazheniya component is made in the form of a sheet, the surface of which is essentially the same as that of the frame. The distance between the frame and the sheet is selected such as to achieve optimum performance.

In accordance with another variant implementation of the invention, the sheet size is slightly larger than the surface of the frame. Thus, there is a marginal effect, which helps to capture the magnetic field and, consequently, increase the allowable distance reading.

Tests have shown that the shape and size of the specified sheet should be selected depending on the characteristics of the label, especially from its frequency characteristics. Due to the presence of the specified magnitootrazheniya sheet, it becomes possible to perform reading labels installed on the metal part, from a distance acceptable for the appropriate applications.

the data sheet can be non-planar (three-dimensional) shape. For example, it may extend beyond the edge of the frame. However, in accordance with the requirements in this sheet can be made holes, the shape of which is selected taking into account the required magnetic characteristics.

List of drawings

The invention will become clearer from the following detailed description in which reference is made to the accompanying drawings, given as non-limiting examples.

Figure 1 shows the electronic label according to the invention, equipped with Magnitogorsk sheet;

figure 2 shows the electronic label according to the invention with a reflective magnetic ring.

Information confirming the possibility of carrying out the invention

In figure 1, where the electronic label presents in cross-section, can be seen schematically shows the frame 1, and an electronic chip 2. It should be noted that although this chip is located inside the frame, it can be installed outside surface bounded by a frame.

Under the frame 1 is magnitootrazheniya sheet 3, is separated from the frame by an insulating sheet 4, which specifies the distance between the frame and Magnitogorsk sheet. To obtain the desired effect of the presence of this insulating layer is not required: magnitootrazheniya sheet can be associated directly with the frame.

This sheet is located on Stour is in opposite towards the reader (shown symbolically lines of force F field). In other words, the sheet is located on the side to which the label is placed on the object that has the properties of metal.

The label may be filled with a layer of epoxy resin or encapsulated between two protective sheets. This label can be of any form: cards, buttons etc; furthermore, it can be done on a flexible basis.

In accordance with a variant implementation of the invention, represented in figure 2, magnitootrazheniya sheet may have various shapes, allowing it to be placed only on the periphery of the frame. In particular, this component can be given the shape of the ferrite ring 3'. Alternative it can be a conductive sheet formed by mechanical punching in the center of which will be the frame. Positive results were also observed when a similar component was located only in one section at the periphery of the frame.

The last of these options does not preclude the use, in addition to the peripheral component, magnitootrazheniya sheet described with reference to the previous option, and is located under the frame. In addition, there may be used a single component that includes both described parts.

1. E. achrona label, containing at least one electronic element (2) and the antenna in the form of a framework (1), and the label is made read by the reading device, wherein the label includes at least one conductive component formed conductive sheet (3)made independent of the aggregate electronic element (2) and frame (1), and the specified sheet (3) is located under the frame (1) side, the opposite side of the transmissive from the reader device.

2. Electronic label according to claim 1, characterized in that the conductive sheet (3) covers all or part of the surface of the frame (1).

3. Electronic label according to claim 1, characterized in that the size of the surface of the conductive sheet (3) is selected slightly greater than the corresponding dimensions of the surface of the frame (1).

4. Electronic label according to claim 1, characterized in that magnetopause sheet (3) has a non-planar shape.

5. Electronic label according to claim 1, characterized in that the surface of the conductive sheet (3) made one or more holes.

6. Electronic label containing at least one electronic element (2) and the antenna in the form of a framework (1), and the label is made read by a reading device, characterized in that the label includes, at least one conductive component (3')made independent of the aggregate electronic element (2) and frame (1)with the specified component is located on the periphery of the frame (1) or its parts.

7. Electronic label according to claim 6, characterized in that the conductive component (3') is made in the form of a ferrite ring located on the periphery of the frame (1).

8. Electronic label according to claim 6, characterized in that the conductive component (3') further comprises a portion formed of conductive sheet (3) and covering all or part of the surface of the frame (1), and this part is located under the frame (1) side, the opposite side of the transmissive from the reader device.

9. The electronic label of claim 8, characterized in that the dimensions of the surface of the specified portion is selected slightly greater than the corresponding dimensions of the surface of the frame (1).

10. The electronic label of claim 8, wherein said part has a non-planar shape.

11. The electronic label of claim 8, characterized in that the surface of a specified portion of one or more holes.

12. Electronic label according to any one of p-11, characterized in that the conductive component (3'), located on the periphery of the frame (1) or on its part, and the sheet (3)located under R is the ua (1), designed as a single part.

Priority items:

18.04.2000 - claims 1 to 5;

03.11.2000 - p-12.



 

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