KR200443445Y1 - Antenna with RFID tags for detecting status - Google Patents

Abstract

The present invention relates to an antenna, and more particularly, in a system using UHF band RFID, two RFID chips are connected between two radiating elements to transmit data of two RFID chips to a single antenna, and are connected to a hall switch. The present invention relates to an antenna capable of being monitored by switching by means of selectively connecting a plurality of electronic tags including a radio wave absorber therebetween so that the two RFID chips are not affected by each other.

In selectively connecting two RFID chips, when they are adjacent to each other, they are affected by each other, so that accurate information of the RFID chips cannot be detected. In addition, the conventional technology has only one piece of information in each RFID, it can only identify the presence of the article attached to the RFID chip has a disadvantage that can not detect the change of state.

The present invention, in order to solve such a conventional problem, the first radiation element formed on the substrate of the dielectric material, and is connected to the first radiation element to selectively connect any one of the two terminals by an external magnetic force A first hall switch, first and second RFID chips respectively connected to two terminals of the first hall switch, and a radio wave absorber provided between the first and second RFID chips to absorb radio waves; The second hall switch and the second radiating element are symmetrically connected with respect to the first and second RFID chips.

RFID chip, antenna, hall switch, optional connection, status monitoring

Description

       Antenna with status monitoring by multiple electronic tags {Antenna with RFID tags for detecting status}

1 is an external view of an antenna capable of monitoring a state by a plurality of electronic tags according to the present invention.

2 is a plan view of FIG.

3 is a view showing the configuration of an RFID chip according to the present invention.

4 is a view showing the operation of the Hall switch according to the present invention.

5 is a view showing the shape of the radiation element according to the present invention.

<Description of Symbols for Main Parts of Drawings>

200 antenna 201 first radiating element

202: second copy element 203: first hall switch

204: second hall switch 205: first RFID chip

206: first loop 207: second RFID chip

208 second loop 209 radio wave absorber

301-303: 1st-3rd contact 304: Switch lead

305: magnetic material

The present invention relates to an antenna, and more particularly, in a system using UHF band RFID, two RFID chips are connected between two radiating elements to transmit data of two RFID chips to a single antenna, and are connected to a hall switch. The present invention relates to an antenna capable of being monitored by switching by means of selectively connecting a plurality of electronic tags including a radio wave absorber therebetween so that the two RFID chips are not affected by each other.

RFID (Radio Frequency Identification) is a technology that reads various information of an object from a remote location by using a pre-allocated frequency band, and attaches a tag in the form of a sticker with a microchip embedded in the object, and then installs a reader or antenna. Tag information is recognized.

The electronic tag system has become full-fledged, allowing users to grasp product information through electronic tags, thereby replacing the conventional method of scanning barcodes on products. Not only is it easy to do, but it is also possible to track the location of objects.

Therefore, the seller can easily manage the product and use a system having a higher recognition rate than the conventional barcode or magnetic card, and there is an advantage of saving time because the buyer does not have to calculate the items to purchase. On the other hand, the frequency for the electronic tag as described above is assigned a bandwidth of 5.58.5 ~ 908.5 ~ 914MHz.

On the other hand, in general, two RFID chips are selectively connected to each other when they are adjacent to each other, and thus there is a problem in that accurate information of the RFID chips cannot be detected. In addition, the conventional technology has only one piece of information in each RFID, it can only identify the presence of the article attached to the RFID chip has a disadvantage that can not detect the change of state.

The present invention, in order to solve the above conventional problems, the first radiation element formed on the substrate of the dielectric material, and the first radiation element is connected to any one of the two terminals selectively by an external magnetic force A first Hall switch, first and second RFID chips respectively connected to two terminals of the first Hall switch, and a radio wave absorber provided between the first and second RFID chips to absorb radio waves. The second hall switch and the second radiating element are symmetrically connected around the first and second RFID chips, so that the state monitoring is performed by a plurality of electronic tags in which the RFID chips are selectively connected without being influenced by each other. It is a technical problem to provide an antenna that can be used.

The present invention to solve the above problems, the first radiation element 201 formed on a substrate of a dielectric material; A first hall switch 203 connected to the first radiating element to selectively connect any one of two terminals by an external magnetic force; First and second RFID chips 205 and 207 connected to two terminals of the first hall switch, respectively; And a radio wave absorber 209 disposed between the first and second RFID chips to absorb radio waves, wherein the second hall switch 204 and the second radiating element are formed around the first and second RFID chips. 202 is configured to be symmetrically connected.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the drawings. In the following description, the same or corresponding members will be denoted by the same reference numerals and detailed description thereof will be omitted.

1 is an external view of an antenna capable of monitoring a state by a plurality of electronic tags according to the present invention, and FIG. 2 is a plan view of FIG. In FIG. 1, the antenna according to the present invention is a dipole antenna resonating at ½ wavelength with respect to a center frequency of a UHF band RFID system, and the first and second radiating elements 201 in the form of a conductor pattern on a substrate made of a dielectric material, respectively. , 202 is formed. Such an antenna is not limited to a dipole type, and any antenna may be symmetrically formed on a dielectric substrate.

1 and 2, when the first and second hall switches 203 and 204 switch to select one of the first and second first RFID chips 205 and 207 by an external magnetic force, The selected RFID chip is connected to the first and second radiating elements 201 and 202 so that the information of the connected RFID chip is transferred to an RFID reader (not shown).

3 is a view showing the configuration of an RFID chip according to the present invention. 3 (a) and 3 (b) show a front view and a plan view, respectively, and FIG. 3 (c) shows the first and second RFID chips 205 and 207 and the radio wave absorber 209 coupled thereto. Indicates the state. In FIG. 3, the RFID chips 205 and 207 according to the present invention are provided on a substrate made of a dielectric material, and loops 206 and 208 having a predetermined shape are connected to the RFID chips. In the embodiment of the present invention, the shape of the loop was rectangular.

With the configuration of the antenna, hall switches and RFID chips as described above, the present invention provides that at least two RFID chips 205 and 207 and specific antenna 200 containing specific information are selectively selected by the hall switches 203 and 204. A radio wave absorber 209 having a predetermined thickness is provided between the two RFID chips 205 and 207. In addition, according to an embodiment of the present invention, the radio wave absorber has a function of blocking a radio wave over a frequency band of 0.1 to 18 GHz, the thickness of t = 2 [mm] was used.

4 is a view showing the operation of the Hall switch according to the present invention. FIG. 4A illustrates a state in which the switch leads 304 are connected to the first contact point 301 and the second contact point 302 and the terminals A and B are connected without receiving magnetic force from the outside. (B) shows a state in which the switch lead 304 is connected to the first contact point 301 and the third contact point 303 and the terminals A and C are connected by a magnetic force received from the outside by the magnetic material 305. .

That is, according to the present invention as described above, the magnetic material is attached to an object having a door or other two states, so that either one of the two RFID chips is switched by switching the first and second hall switches according to the opening and closing of the door or the change of the state. It can be selected to detect changes in the state of an object. At this time, the first and second hall switches operate simultaneously.

5 is a view showing the shape of the radiation device according to the present invention, showing the shape of the radiation device and the pattern size of the radiation device according to an embodiment of the present invention. According to FIG. 5, the radiation element according to the present invention has a width w = 9 [mm] formed on a dielectric substrate having a length and width of a × b = 43 × 13 [mm].

Although the present invention as described above has been described with respect to the preferred embodiment, the present invention is not limited thereto, and various modifications and changes may be made without departing from the technical spirit of the present invention.

As described above, the present invention connects two RFID chips between two radiating elements and switches by a Hall switch to transmit data of two RFID chips to one antenna, and includes a radio wave absorber between the two RFID chips. In this way, it is possible to monitor the state by selectively connecting a plurality of electronic tags so as not to be influenced by each other.

Claims (5)

In the antenna for identifying the electronic tag, A radio wave absorber that absorbs radio waves; First and second RFID chips provided on the electromagnetic wave absorber to face each other; A first hall switch and a second hall switch selectively connected to any one of the terminals of the first and second RFID chips by an external magnetic force; And A first radiation element and a second radiation element connected to each of the first hole switch and the second hole switch and formed on a substrate of a dielectric material; And the first hall switch and the second hall switch are symmetrical with respect to the electromagnetic wave absorber. delete delete The radio wave absorber of claim 1, An antenna capable of monitoring a state by a plurality of electronic tags, the thickness of which is t = 2 [mm]. The method of claim 1, wherein the antenna, An antenna capable of monitoring a state by a plurality of electronic tags, wherein a radiation element having a width of w = 9 [mm] is formed on a dielectric substrate having a length and width of a × b = 43 × 13 [mm].

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