JP5499977B2 - Tag system and RFID tag - Google Patents

Description

  The present invention relates to a tag system and an RFID tag having a function of driving a device, and more particularly to a tag system and an RFID tag that can easily drive a device.

  For example, Patent Document 1 discloses a conventional RFID tag system that performs notification of an LED, a buzzer, or the like while suppressing the power of a radio wave applied to an antenna to drive a notification unit included in the RFID. . According to Patent Document 1, the reader / writer includes a handy reader / writer and an installed reader / writer, and the installed reader / writer is disposed in the vicinity of the RFID tag attached to the back cover of the book displayed on the book shelf. When a user searches for a desired book, a signal specifying a unique ID of a tag to be searched is transmitted from the handy reader / writer, and then an identification ID specifying signal is transmitted from the installation reader / writer, and an LED included in the search RFID tag is turned on. Discloses a system.

JP 2009-301374 A (summary etc.)

  Conventional RFID tag systems that can drive devices such as LEDs (hereinafter sometimes referred to as “tag systems”) have been configured as described above. In a conventional system, it is necessary to prepare a handy reader / writer and an installed reader / writer as reader / writers, and there is a problem that the apparatus is complicated and expensive.

  The present invention has been made in view of the above-described problems, and an object thereof is to provide a tag system and a tag that can drive a device connected to the tag with a simple configuration.

  A tag system according to the present invention includes an RFID tag that can drive a device having a predetermined function and a reader that reads the RFID tag. The RFID tag has a drive unit for driving a device having a predetermined function, outputs a subcarrier when responding to reading from the reader, and the drive unit detects a subcarrier and has a device having a function. To drive.

  Preferably, the device having a predetermined function is a low power consumption type notification device such as an LED, and the drive unit drives the LED.

  More preferably, the device having a predetermined function is a device that drives a high current consumption type notification element such as a buzzer with a battery, and the drive unit generates a signal for starting the buzzer.

  In the RFID tag that can drive a device having a predetermined function, the RFID tag, the device having a predetermined function, and the drive unit thereof may be provided integrally or separately.

  The device having a predetermined function and the driving unit preferably include an antenna that receives electromagnetic waves from the reader / writer and a repeater antenna that communicates with the RFID tag.

  The reader may be fixed or handy.

  In another aspect of the present invention, the RFID tag is read by a reader and can drive a device having a predetermined function. The RFID tag has a drive unit for driving a device having a predetermined function, outputs a subcarrier when responding to reading from the reader, and the drive unit detects a subcarrier and has a device having a function. To drive.

  First, the principle of the present invention will be described. The present invention detects a sideband component (hereinafter referred to as “subcarrier”) when transmitting data stored in an RFID tag in response to an inquiry from a reader for the RFID tag, and uses the detected subcarrier. For example, the LED is illuminated. 1 and 2 are diagrams for explaining the principle of the present invention. FIG. 1A is a diagram showing subcarriers when a command is issued to a tag compliant with ISO15693, and FIG. 1B is a diagram showing subcarriers when data is read.

  Referring to FIG. 1A, when command transmission or data writing is performed from a reader / writer, subcarriers having a width of about 26 kHz exist above and below a carrier wave (13.560 MHz). On the other hand, as shown in FIG. 1B, when the reader / writer reads data from the tag, the tag has subcarriers of about 26 KHz width at intervals of 424 kHz above and below the carrier wave (13.560 MHz).

  FIG. 2 is a block diagram showing a configuration of a subcarrier detection circuit of a drive unit in the case where this subcarrier is detected and, for example, an LED is lit. Referring to FIG. 2, drive unit 100 includes a rectifier circuit 101, a detection circuit 102, a band pass filter 103, an amplifier 104, a comparator 105, and an LED 106 connected to a standard RFID tag 110. . The band pass filter 103 is used to tune to a subcarrier frequency such as 424 kHz.

  In addition, although demonstrated using the tag here, not only this but an IC card etc. may be sufficient. Further, although a tag conforming to ISO15693 has been described as an example, the present invention is not limited to this, and can be used for any tag or IC card that performs data reading using a subcarrier.

  Since the subcarrier at the time of response of the RFID tag is detected and thereby the predetermined device is driven, the predetermined device can be driven at the time of response of the tag.

  As a result, it is possible to provide a tag system and a tag that can drive a device connected to the tag with a simple configuration.

It is a figure for demonstrating the principle of this invention. It is a figure for demonstrating the principle of this invention. It is a block diagram which shows one Embodiment of the tag system which has a function which drives an apparatus. It is a block diagram which shows other embodiment of the tag system which has a function which drives an apparatus. It is a block diagram which shows other embodiment of the tag system which has a function which drives an apparatus. It is a figure which shows the utilization method of a tag system. It is a figure which shows the other usage method of a tag system. It is a figure which shows the further another usage method of a tag system. It is a figure which shows the further another usage method of a tag system.

  Hereinafter, an embodiment of the present invention will be described with reference to the drawings. FIG. 3 is a block diagram showing an embodiment of a tag system having a function of driving an apparatus according to an embodiment of the present invention (this form is referred to as “integrated light tag”). Here, a case where the tag system has a function of lighting an LED as a function of driving the device will be described.

  Referring to FIG. 3, the tag system 10 includes a personal computer 11 for specifying an RFID tag, a reader / writer (RW) 12 connected to the personal computer 11, a reader / writer antenna 13 connected to the reader / writer 12, It includes a tag 20 that shines and is identified by the reader / writer 12. The glowing tag 20 includes an antenna 21 that is driven by electromagnetic waves from the reader / writer 12 to generate predetermined power, a transponder IC (hereinafter referred to as “TRIC”) 22 connected to the antenna 21, and an LED driving unit as a glowing function. 23 integrally. Here, a magnetic path formed by the reader / writer antenna 13 is indicated by reference numeral 15.

  Note that a plurality of tags are stored in the personal computer 11 together with numbers for identifying the tags, and the user can identify the tag 20 that shines by selecting a desired tag from among the tags. Further, not the reader / writer but only the reader may be used.

  Next, the operation in this embodiment will be described. When a desired tag is specified by the personal computer 11, it is sent to the reader / writer antenna 13 via the reader / writer 12, whereby the antenna 21 of the tag 20 is activated and the TRIC 22 responds. At that time, the subcarrier output by the TRIC 22 is detected by a subcarrier detection circuit (not shown) provided in the LED drive unit 23 to drive the LED 24.

  Next, another embodiment of the present invention will be described. FIG. 4 shows another embodiment of the present invention. This embodiment is different from the previous embodiment in that the LED driving portion and the tag are separated (this type is referred to as “separated type tag”). Since the other parts are the same as those in the previous embodiment, the same reference numerals are given to the same parts and the description thereof is omitted.

  Referring to FIG. 4, in this embodiment, a shining tag 30 is provided with an RFID tag 31 and an LED unit 35 separately. The RFID tag 31 is a normal tag, includes an antenna 32 and a TRIC 33, and the reader / writer antenna 13 and the antenna 32 are connected by a magnetic path 34.

On the other hand, the LED unit 35 includes an antenna 36 and an LED drive unit 37, and the LED drive unit 37 includes a drive circuit (not shown) and an LED 38. The reader / writer antenna 13 and the antenna 36 are connected by a magnetic path 39 to supply power to the drive unit. And the antenna 32 and the antenna 36 are connected by the magnetic path 53, and subcarrier reception is performed.
Here, the drive circuit stored in the LED unit 35 detects the subcarrier output from the TRIC 33 and turns on the LED.

  Next, still another embodiment of the present invention will be described. FIG. 5 is a view showing still another embodiment of the present invention. This embodiment is different from the previous embodiment in that a repeater antenna is provided in a portion for driving an LED. Since the other parts are the same as those in the previous embodiment, the same reference numerals are given to the same parts and the description thereof is omitted.

  Referring to FIG. 5, in this embodiment, LED 40 and RFID tag 46 are separately provided in shining tag 40. The LED unit 41 is obtained by adding a repeater antenna 49 to the LED unit 35 shown in FIG. 4, and includes an antenna 42, a function block 43 that shines, and a repeater antenna 49. The function block 43 that shines includes a drive circuit (not shown) and an LED 44. Here, the reader / writer antenna 13 and the antenna 42 of the LED unit 41 are connected by a magnetic path 45. This format is called a repeater antenna type glowing tag.

  The RFID tag 46 is the normal tag shown in FIG. 4 and includes an antenna 47 and a TRIC 48. The repeater antenna 49 of the LED unit 41 and the antenna 47 of the RFID tag 46 are connected by a magnetic path 54. Here, the drive circuit stored in the LED unit 41 detects the subcarrier output from the TRIC 48 and turns on the LED 44.

  Next, the utilization method of this invention is demonstrated. FIG. 6 is a diagram showing an example of use when a shining tag is used for medical chart detection according to one embodiment of the present invention. Each of the medical charts is attached with the integral shining tag described in FIG.

  Referring to FIG. 6A, a medical chart management system 50 using an integral shining tag has a chart surface on a personal computer 11, a reader / writer 12, a reader / writer antenna 13, and a reader / writer antenna 13. And a plurality of medical charts 51 arranged so as to be orthogonal to the longitudinal direction of the writer antenna 13.

  FIG. 6B is a view showing a state where a part of the medical chart is taken out. As shown in FIG. 6B, a tag 20 that shines in the vicinity of one corner of a rectangular medical chart holder is attached. FIG. 6C is a schematic view of the shining tag 20 attached to the medical chart shown in FIG. As shown in FIG. 6C, an LED 24 is provided on a part of the tag 20.

  Next, a method of using this system will be described. The user inputs a desired chart number from the personal computer 11. An RFID tag number corresponding to the entered chart number is sent to the reader / writer 12, and the RFID tag number is output from the reader / writer 12. As a result, the RFID tag reacts and outputs its own identification number. The subcarriers simultaneously output at that time are detected by a subcarrier detection circuit (not shown), and the LED 24 provided in the chart is turned on accordingly.

  By configuring the chart management system in this way, it is possible to visually find a desired medical chart with a simple configuration.

  Next, another usage method will be described. FIG. 7 is a schematic diagram showing an example in which the separation type shining tag system shown in FIG.

  FIG. 7A is a schematic diagram showing the overall structure of the key box system 60 in this embodiment. Referring to FIG. 7A, a personal computer 11 and a reader / writer 12 are provided in the same manner as in the previous embodiment. In this embodiment, the reader / writer antenna 13 is provided so as to surround a key box 61 having a hanging portion 63 for suspending a total of 20 keys in 5 rows and 4 columns.

  Each key 62 is attached to the RFID tag 31 and is suspended by the suspension part 63.

  FIG. 7B is a diagram showing the suspending portion 63 and the individual keys 62 held by the suspending portion 63. As shown in FIG. 7B, the hanging portion 63 is provided with a TRIC separation type shining tag 30. Here, the key 62 attached to the RFID tag 31 is suspended.

  When a specific key number is input using the personal computer 11 in such a state, the RFID tag 31 associated with the key responds via the reader / writer 12 and the reader / writer antenna 13. At that time, since the RFID tag 31 and the TRIC-separated type tag 35 are overlapped, the TRIC-separated type tag 35 detects a subcarrier when the RFID tag 31 responds, and the key of the key box 61 is held. The LED 38 provided on the TRIC separation type shining tag 35 at the location is pointed.

  Next, still another usage method will be described. FIG. 8 is a schematic diagram showing an example in which the repeater antenna type shining tag shown in FIG.

  FIG. 8A is a schematic diagram showing the overall structure of the reel holder system 70 in this embodiment. Referring to FIG. 8A, a personal computer 11 and a reader / writer 12 are provided in the same manner as in the previous embodiment. The reel holder 71 is in the form of a file having a certain width with an upper portion opened to hold a disc-shaped reel 72 having a predetermined width. In this embodiment, the reader / writer antenna 13 is provided so as to surround the back surfaces of the plurality of reel holders 71.

  FIG. 8B is a perspective view showing the overall configuration of the reel holder 71 with an optical function. The reel holder 71 includes an antenna cover magnetic sheet 73 provided on one surface of the reel holder 71 and a repeater antenna 49 attached on the antenna cover magnetic sheet 73. An LED portion 43 provided with an LED 44 and a drive circuit (not shown) is provided on the rear surface of the reel holder 71, and an antenna 42 is provided below the LED portion 43. The antenna of the reader / writer 13 is provided so as to surround the antenna 42.

  On the other hand, the RFID tag 46 is attached to the reel 72, and the reel 72 is accommodated in the reel holder 71 in this state.

  Next, the utilization method in this embodiment will be described. The RFID tag 46 is affixed to the chip component reel 72 in advance at the time of purchase. At the same time, component data convenient for searching is written in the RFIF tag 46 and registered in the personal computer 11. Then, the surface where the RFID tag 46 of the reel 72 is attached to the vacant reel holder 71 is stored on the repeater antenna 49 side.

  The storage location of the reel 72 is confirmed by reading the data of the RFID tag 46 of the reel 72 from the reader / writer 12. At this time, the LED 44 of the reel holder 71 stored can shine and the location can be known.

  If the same function is installed in the component feeder of the mounter, the feeder position can be confirmed at the storage location, and when the mounter is set, the feeder set position and the reel data attached directly to the feeder can be verified from the attached RFID tag. Therefore, it is possible to prevent erroneous setting and to greatly reduce the man-hour for setting position confirmation.

  Next, still another usage method will be described. FIG. 9 is a schematic diagram showing an example in which a repeater antenna type shining tag is used as a document management holder.

  FIG. 9A is a schematic diagram showing the overall configuration of the document management holder system 80 in this embodiment. FIG. 9B is a cross-sectional view of the document holder 81, and FIG. 9C is a diagram showing a specific configuration of a repeater antenna type tag.

  Referring to FIG. 9A, a document management holder system 80 includes a personal computer 11, a reader / writer 12, a reader / writer antenna 13, and a plurality of document holders 81 arranged on the reader / writer antenna 13.

  Referring to FIGS. 9B and 9C, document holder 81 has a file shape and has a pair of rectangular surfaces opposed to each other. Repeater antenna 49 and 1 An LED unit 41 (including the antenna 42) is provided in the vicinity of one corner. The rectangular surface of the document holder 81 is arranged so as to be orthogonal to the longitudinal direction of the loop antenna extending in the longitudinal direction of the reader / writer antenna 13. That is, the LED portions 41 (including the antenna 42) are arranged so as to be orthogonal to the longitudinal direction of the reader / writer antenna 13.

  The holder 82 held by the document holder 81 is in the form of a file having substantially the same configuration as the document holder 81, and includes a document holding portion 84 that holds the document 83, and an interference prevention magnet provided on one surface of the document holding portion 84. A body sheet 85 and a card pocket 86 provided on the interference preventing magnetic sheet 85. An ISO card (RFID tag) 46 is storably held in the card pocket 86.

  Next, a method of using this embodiment will be described. As in the previous embodiment, the document 83 and the RFID tag 46 are associated with each other and stored in the personal computer 11. On the other hand, the document is stored in the holder 82, accommodated in the document holder 81 together with the RFID tag 46, and arranged on the reader / writer antenna 13 extending in the longitudinal direction.

  When a desired document is selected by the personal computer 11, the RFID tag 46 is detected via the reader / writer 12, the subcarrier at the time of response is received by the LED unit 41 via the antenna 42, and the LED 44 is lit.

  In this embodiment, a general-purpose ISO card can be used as an RFID tag for document identification.

  In the above embodiment, a case has been described in which a subcarrier of a tag is detected and a low power consumption type notification device such as an LED is driven as a device. However, the notification element of a high power consumption type (such as a drive type using another battery or power supply without being driven by itself) such as a buzzer or a high-intensity lamp may be driven as a device. Moreover, you may make it drive using LED and a buzzer together. Alternatively, the LED drive signal of the drive unit may be output as a trigger signal, thereby driving a warning light or a motor that requires a large current using another power source.

  As mentioned above, although embodiment of this invention was described with reference to drawings, this invention is not limited to the thing of embodiment shown in figure. Various modifications and variations can be made to the illustrated embodiment within the same range or equivalent range as the present invention.

  The tag system according to the present invention detects a subcarrier when responding to reading from a reader and lights an LED. Therefore, the tag system can be detected at the same time as the RFID tag is specified. Therefore, the tag system is advantageous as a tag for detecting the position. Used for.

  10 tag system, 11 personal computer, 12 reader / writer, 13 reader / writer antenna, 20, 30, 40 glowing tag, 22 transponder IC, 23 LED drive unit, 24 LED.

Claims (7)

A tag system including an RFID tag capable of driving a device having a predetermined function and a reader for reading the RFID tag,
The RFID tag has a drive unit for driving the device having the predetermined function,
Output a subcarrier when responding to a read from the reader,
The tag system, wherein the driving unit detects the subcarrier and drives the device having the function. The device having the predetermined function is an LED,
The tag system according to claim 1, wherein the driving unit drives the LED. The device having the predetermined function is a buzzer,
The tag system according to claim 1, wherein the driving unit drives the buzzer. The tag system according to any one of claims 1 to 3, wherein the RFID tag capable of driving the device having the predetermined function is integrally provided with the RFID tag and the device having the predetermined function. The tag system according to claim 1, wherein an RFID tag capable of driving the device having the predetermined function is provided separately from the RFID tag and the device having the predetermined function. The tag system according to claim 5, wherein the device having the predetermined function includes an antenna that receives an electromagnetic wave from the reader / writer, and a repeater antenna that updates the RFID tag. An RFID tag that is read by a reader and can drive a device having a predetermined function,
A drive unit for driving the device having the predetermined function;
Output a subcarrier when responding to a read from the reader,
The driving unit detects the subcarrier and drives the device having the function.

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