Contactless data medium

FIELD: data medium engineering.

SUBSTANCE: proposed data medium has at least two antennas, corresponding to different transmission ranges. In this case the data medium may be fabricated such a way that it is ensured possibility of operation with devices for record/read, functioning in accordance with different standards. At least two from the antennas produce a single unit. Owing to this union the developed data medium may be fabricated with high efficiency.

EFFECT: technical result of the invention is increased economic efficiency of data medium fabrication.

3 cl, 4 dwg

 

The invention relates to a data carrier, which is designed for contactless data transmission.

In the field of contactless data and energy transmission has different system requirements, which differ primarily in the range, a transmission medium, multi-TAG capability, i.e. the ability to distinguish between many TAG in the area of the input device read/write, and the time value of the transaction. The system requirements should also be included in specific to different countries regulations that force prescribe the use of certain frequencies.

Goods are often supplied with a contactless data carriers to be able to electronically identify the goods. In the sorting installation for packages (parcels), for example, in the calculator, remember the destination, as well as other data, such as the size and weight of packages. The package is glued contactless data carrier with written on it an identification number, so that at any point in time by using the identification numbers in conjunction with stored computer data can, for example, to establish that is the destination (destination) of the packet. Thus automatic sorting of packages (parcels) is greatly simplified. Problems, however, arise when the goods are sent for g is the banks, where there are other regulations, and therefore screening plant abroad will not be able to read and applied as the operating frequency now has a different value.

In other applications of the product (the product) is, for example, in the production process many workstations. Each time there are different boundary conditions for the recognition of contactless media, for example, on a single workstation requires a particularly low field strength, so as not to interfere with other installations, and on another workstation, in contrast, requires a particularly large range. Often this cannot be done at the same operating frequency. Specific conditions must be applied in various types of fields as electrical and inductive fields have different properties, which differ from the corresponding properties of electromagnetic waves. With regard to the ability of receiving data of a certain frequency by a particular field in the subsequent applies the concept of "transmission range". Of course, this notion includes the ability to transmit data in this range.

As you can change settings from the U.S. patent 5572226 known, for example, the use of multiple antennas at the expense of consistent PE is clucene between the antennas and the measurement signal can be set the antennas should be communication with the device read/write. This, however, requires a significant investment.

The objective of the invention is to create a data carrier that can be used in different ranges of the transmission and can be manufactured in a cost efficient manner. This task in accordance with the invention is solved by means of a data carrier with a data processing unit and at least two antennas designed to receive respectively different ranges of the transmission, and at least two of the antennas form a block. Therefore, in one embodiment of the invention does not require switching between antennas.

In another preferred embodiment of the invention, the data processing unit has means for recognizing transmission range with the strongest received signal, and block preparation (pre-processing) of the received signal can be installed on the transmission range.

The frequency of the data carrier are very different. In the so-called range of very high frequencies (VHF) used frequency is set to 13.56 MHz. In the so-called range of ultra-high frequency (UHF) may apply frequency 868 MHz, 915 MHz and 2.45 GHz. It is not possible to cover this frequency range, only the second antenna, as in the range of 13.56 MHz data transfer and power through inductive field, while at frequencies in the UHF range we are talking about electromagnetic waves.

The data processing unit without any problems can be designed in such a way as to be able to handle different frequencies, while for the antenna is impossible. Therefore, in accordance with the invention uses at least two antennas, which are respectively designed for different transmission ranges. For UHF-band can be used dipole antenna for VHF - loop antenna. The data processing unit, you only need to recognize in which the antenna is more powerful signal, which can be recognized by what standard does the device read/write.

In addition, it is preferable if the data carrier has an additional capacitive antenna. This provides a third possible way of transmission corresponding to the invention of a data carrier. For each of the used range is possible, therefore, to apply the optimal frequency and type of field, without regard to the quality of the contactless data carrier.

Additional advantages arise if the antenna is not used for data transmission, is used for transmission is the power to power the contactless data carrier.

For the production of different antennas is favorable, if they form a single unit, but are produced in different production stages, and then combined into a single integral unit.

The invention is illustrated below in the embodiments illustrated by the drawings, which represent the following:

Figure 1 is a first exemplary embodiment of the media data corresponding to the invention, with three separate antennas

Figure 2 - conventional loop antenna

Figure 3 - dipole antenna and

Figure 4 is a combination of the antenna of figure 2 and figure 3 in the data carrier as a second example of execution.

In the exemplary embodiment of figure 1 in a contactless data carrier 7 data provided by three different antennas, namely, the loop antenna 1, the dipole antenna 2 and the capacitive antenna 6, which are respectively associated with the unit 3 data. Block 3 data has the means 4 for detection of transmission range with the strongest received signal. While controlled by the signals received by the three antennas 1, 2 and 6. When a data carrier is in the area of the device read/write, which operates in the UHF range, the output of the dipole antenna 2 will have a more powerful signal than the antenna 1 is designed for operation in the VHF range, and capacitive antenna 6 for transmission through the container of the STN field. The corresponding true when the signals are transmitted in other frequency bands, for example, by capacitive field. In this embodiment, therefore, the detection of transmission range with the strongest received signal has the same value as the antenna selection 1, 2 or 6 with the strongest received signal. On the basis of the detected range of the transmission unit 5 preparation (pre-processing) of the received signal is set so that the processing frequency of the detected frequency range is possible with the use of the relevant designated antennas. Antennas 1 and 2 are aligned with each other so that the separation of the antenna of the findings is not required, however, the antennas 1 and 2 do not generate interference to each other.

In the second example run in figure 2-4 loop antenna 11 and the dipole antenna included together in such a way that it is equally possible reception in different frequency ranges. Conclusions 14 coil loop antenna 11 of figure 2 are included together with the ends 15 of the dipole antenna 12 in figure 3. Thus formed by serial connection of the dipole antenna 12 and the loop antenna 11. Conclusions 16 dipole antenna 12 to form a joint conclusion to jointly included antennas 11 and 12. The dipole antenna 12 in the VHF range is essentially not actuat, but is electrically conductive. Therefore, when the reception signal in the VHF-band, this signal is applied to the pins 16 of the dipole antenna 12 that does not lead to negative effects on the signal in the VHF-band.

When receiving a signal UHF loop antenna 11 has no negative effects on the signal UHF range. The latter may also withdraw from the conclusions 16 dipole antennas. As in the example of execution according to Fig 1, there is a means 17 for detection of transmission range with the strongest received signal. This means 17 should not, however, control unit 13 of the data processing so as to perform switching at different antennas 11 and 12, instead, just install the block 18 pre-processing of the received signal on the transmission range.

In the embodiment, a data carrier according to the first exemplary embodiment of figure 1 the second or the third antenna can be used to transfer energy separately from data for the second "free" antenna. Thus, data and energy can be transmitted at different frequencies, which provides advantages in the aspect of reliability of recognition.

Capacitive antenna differs in that it is very small distances acts as a capacitor, and both data and energy can be transmitted through mestnogo field. Capacitive antenna can be performed, as shown in figure 1, as a third antenna, or as an integral part of the other two antennas 1 or 2.

1. Contactless data carrier containing the block (3, 13) data and at least two antennas(1, 2, 6; 11, 12), one antenna is a dipole antenna (2; 12), and the other antenna is a loop antenna (1; 11), characterized in that at least one dipole antenna (2; 12) and one loop antenna (1; 11) for respectively different ranges of transmission is directly related to each other, unit (3; 13) data contains tool (4; 17) for detection of transmission range with the strongest received signal and the block (5; 18) pre-processing the received signal has the option settings on the transmission range.

2. Contactless data carrier according to claim 1, characterized in that the data carrier has an additional capacitive antenna (6).

3. Contactless data carrier according to claim 1, characterized in that a single antenna data is transmitted, and through the other antenna is an energy to supply power to the carrier (7) data.

4. Contactless data carrier according to claim 1, characterized in that the at least two antennas (11; 12) are manufactured separately components that are linked ele is toprovide way.



 

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