JP2015138533A - Portable terminal, program and method identifying radio tag of object operated by user - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a portable terminal and the like that collectively read radio tags associated with a plurality of objects respectively.SOLUTION: A portable terminal includes: ID record means for recording a tag ID of read radio tag in time series in order to identify an object by an operation with respect to the radio tag of an object desired by a user; and object tag determination means for comparing a tag ID group read in a first prescribed time range with a tag ID group read in a second prescribed time range, and determining that the object based on the tag ID read only in one of the prescribed time ranges is an object selected by the user. Further, in the case where the ID tag is read in the first prescribed time range and not read in the next second prescribed time range, and read in a third prescribed time range or in an inverted case, the object tag determination means determines that the object based on the tag ID is an object selected by the user.

Description

  The present invention relates to a technology of a wireless tag reader (reading device) that reads a wireless tag.

  In recent years, services called IoT (Internet Of Things) and IoT (Internet Of Everything) have attracted attention. This can provide added value by connecting even “things” (for example, one ballpoint pen) that has not been connected to the conventional network to the network. According to this technology, it is necessary for the network system to manage a large amount of “things” at low cost. For example, passive RFID (Radio Frequency IDentification) tags using a UHF (Ultra High Frequency) band (for example, 920 MHz) are typically used as communication devices that can be attached to these “things”.

  A wireless tag (passive RFID tag) operates by converting a transmission wave from a wireless tag reader (RFID reader / writer) into electric power without mounting a power supply device or a communication device. A typical example is a Suica (registered trademark) card using FeliCa technology, which achieves a reading distance of about 10 cm. On the other hand, for example, by using the UHF band, the reading distance can be increased to a maximum of about several meters, and a large number of wireless tags attached to “mono” existing in the space can be collectively read (for example, non-patent) Reference 1).

  FIG. 1 is an explanatory diagram showing a use state of a portable terminal equipped with a conventional wireless tag reader.

  According to FIG. 1, a wireless tag reader 10 is mounted on a portable terminal 1 such as a smartphone or a tablet. In addition, a large number of objects “things” exist in the room, and a wireless tag 2 is attached to each of them. The wireless tag 2 is not limited to an electric device such as a television, an audio device, a remote controller, a camera, and a personal computer, and can be attached to various objects such as a passport, a pension book, a seal, a key, and glasses. The wireless tag reader 10 of the portable terminal can collectively read the wireless tags 2 of all the objects in the room.

UHF Class 1 Gen 2 Standard v. 2.0.0, [online], [searched on January 13, 2014], Internet <URL: http://www.gs1.org/sites/default/files/docs/uhfc1g2 /uhfc1g2_2_0_0_standard_20131101.pdf> Bluetooth SIG (Special Interest Group), [online], [Search January 13, 2014], Internet <URL: https://www.bluetooth.org/apps/content/> WPS (Wi-Fi Protected Setup) Wi-Fi Alliance, [online], [searched on January 13, 2014, Internet <URL: http://www.wi-fi.org/file/wi-fi-certified -wi-fi-protected-setup% E2% 84% A2-easing-the-user-experience-for-home-and-small-office-wi> AOSS (AirStation One-Touch Secure System), [online], [Search January 9, 2014, Internet <URL: http://buffalo.jp/aoss/useful.html>

  The wireless tag reader can read a large number of wireless tags at a time, but to which object the read tag ID is attached? It is difficult to identify.

  Here, it is assumed that the user who possesses the mobile terminal writes specific information (for example, an object name or user information) in a wireless tag attached to the camera. At this time, the user needs to identify the tag ID of the wireless tag attached to the camera from among a large number of tag IDs collectively read by the mobile terminal. Of course, when “camera” is written in the wireless tag of the camera at the time of factory shipment, for example, the user can recognize the “camera” from the read data, Specific information cannot be written.

  According to FIG. 1, the wireless tag reader mounted on the portable terminal reads the tag IDs of a large number of wireless tags existing in the vicinity, but cannot identify the object name. As a result, the user cannot write data to the wireless tag unless the tag ID of the desired object is recognized by some method from among the tag IDs of a large number of wireless tags.

  According to another communication technology, there is a technology for associating (pairing) between specific devices in the presence of a large number of devices. For example, when setting Bluetooth (registered trademark) or a wireless LAN, a specific target device can be identified (see, for example, Non-Patent Document 2). According to this technique, in order to specify a Bluetooth device to be paired, for example, a button or the like can be pressed, and then a pairing can be performed only for a certain period of time. There is also a technique that simplifies the setting operation by executing communication setting only with a device whose button is pressed at the same time (see, for example, Non-Patent Documents 3 and 4). However, the passive wireless tag is like a tiny seal, does not have a power supply device or even a communication device, and it is difficult to mount a button or the like.

  Therefore, the present invention provides a portable terminal, a program, and a method capable of collectively reading a wireless tag attached to each of a plurality of objects and specifying a wireless tag of a desired object by a user. Objective.

According to the present invention, in a portable terminal equipped with a wireless tag reader that collectively reads wireless tags attached to a plurality of objects,
In order to specify the target object by the operation on the wireless tag of the desired target object by the user,
Tag ID recording means for recording the tag ID of the read wireless tag in time series;
The tag ID group read in the first predetermined time range is compared with the tag ID group read in the next second predetermined time range, and the object based on the tag ID read only on one side is It has the object tag determination means which determines with having been selected.

According to another embodiment of the mobile terminal of the present invention,
The target tag determination means can read the tag ID in the first predetermined time range and cannot read it in the next second predetermined time range, but can read it in the next third predetermined time range, or
If it cannot be read in the first predetermined time range, it can be read in the next second predetermined time range, and it cannot be read in the next third predetermined time range,
It is also preferable to determine that the object based on the tag ID is selected by the user.

According to another embodiment of the mobile terminal of the present invention,
The tag ID recording means further records the radio wave quality of the response wave in time series for each tag ID of the read wireless tag,
The target tag determination means acquires the radio wave quality of the response wave acquired earlier for each tag ID and the tag ID read in both the first predetermined time range and the next second predetermined time range. It is also preferable to further determine that the object based on the tag ID is selected by the user when a difference equal to or greater than a predetermined threshold is detected with the radio wave quality of the response wave.

According to another embodiment of the mobile terminal of the present invention,
The radio wave quality is the received radio wave intensity, and it is also preferable to determine a user's operation for blocking / moving the desired object with respect to the radio tag.

According to another embodiment of the mobile terminal of the present invention,
It is also preferable that the wireless tag reader and the wireless tag are based on UHF (Ultra High Frequency) band passive RFID (Radio Frequency IDentification).

According to the present invention, in a program for functioning a computer included in a portable terminal mounted on a wireless tag reader that collectively reads wireless tags attached to each of a plurality of objects,
In order to specify the target object by the operation on the wireless tag of the desired target object by the user,
Tag ID recording means for recording the tag ID of the read wireless tag in time series;
The tag ID group read in the first predetermined time range is compared with the tag ID group read in the next second predetermined time range, and the object based on the tag ID read only on one side is The computer is caused to function as a target tag determination unit that determines that the selected tag is selected.

According to another embodiment of the program of the present invention,
The target tag determination means can read the tag ID in the first predetermined time range and cannot read it in the next second predetermined time range, but can read it in the next third predetermined time range, or
If it cannot be read in the first predetermined time range, it can be read in the next second predetermined time range, and it cannot be read in the next third predetermined time range,
It is also preferable to cause the computer to function so as to determine that the object based on the tag ID is selected by the user.

According to another embodiment of the program of the present invention,
The tag ID recording means further records the radio wave quality of the response wave in time series for each tag ID of the read wireless tag,
The target tag determination means acquires the radio wave quality of the response wave acquired earlier for each tag ID and the tag ID read in both the first predetermined time range and the next second predetermined time range. The computer may also function to further determine that the object based on the tag ID is selected by the user when a difference equal to or greater than a predetermined threshold is detected with the radio wave quality of the response wave. preferable.

According to another embodiment of the program of the present invention,
The radio wave quality is the received radio wave intensity, and it is also preferable to make the computer function so as to determine the blocking / moving operation of the desired object with respect to the radio tag by the user.

According to the present invention, in a wireless tag reading method of a mobile terminal equipped with a wireless tag reader that collectively reads wireless tags attached to a plurality of objects,
In order to specify the target object by the operation on the wireless tag of the desired target object by the user,
A first step of recording a tag ID of the read wireless tag in time series;
The tag ID group read in the first predetermined time range is compared with the tag ID group read in the next second predetermined time range, and the object based on the tag ID read only on one side is And a second step of determining that it has been selected.

According to another embodiment of the wireless tag reading method of the present invention,
In the second step, the tag ID can be read in the first predetermined time range and cannot be read in the next second predetermined time range, and can be read in the next third predetermined time range, or
If it cannot be read in the first predetermined time range, it can be read in the next second predetermined time range, and it cannot be read in the next third predetermined time range,
It is also preferable to determine that the object based on the tag ID is selected by the user.

According to another embodiment of the wireless tag reading method of the present invention,
The first step is to further record the radio wave quality of the response wave in time series for each tag ID of the read radio tag.
In the second step, for the tag ID read in both the first predetermined time range and the next second predetermined time range, the radio wave quality of the response wave acquired earlier and the tag ID acquired later are obtained for each tag ID. It is also preferable to further determine that the object based on the tag ID is selected by the user when a difference equal to or greater than a predetermined threshold is detected with the radio wave quality of the response wave.

According to another embodiment of the wireless tag reading method of the present invention,
The radio wave quality is the received radio wave intensity, and it is also preferable to determine a user's operation for blocking / moving the desired object with respect to the radio tag.

  According to the portable terminal, the program, and the method of the present invention, the wireless tag attached to each of the plurality of objects can be collectively read and the wireless tag of the desired object by the user can be specified.

It is explanatory drawing showing the use condition of the portable terminal carrying the conventional wireless tag reader. It is explanatory drawing showing the use condition of the portable terminal carrying the wireless tag reader of this invention. It is a 1st sequence diagram in this invention. It is a 2nd sequence diagram in this invention. It is explanatory drawing showing the user's operation with respect to the target object in this invention. It is a functional block diagram of the portable terminal in this invention. It is a graph showing the change of the received radio wave intensity before and after the user's blocking operation. It is a graph showing the change of the received radio wave intensity before and after the user's moving operation.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

  FIG. 2 is an explanatory diagram showing a usage state of a portable terminal equipped with the wireless tag reader of the present invention.

  According to FIG. 2, similarly to FIG. 1, the mobile terminal 1 is equipped with a UHF band wireless tag reader (RFID reader / writer) 10. In addition, a passive wireless tag (RFID tag) 2 is attached to each of a large number of objects existing around the mobile terminal 1. The wireless tag reader 10 can collectively read the wireless tags 2 of all communicable objects.

  According to the present invention, when the user operates (shields / moves) the wireless tag 2 of the desired object, the mobile terminal 1 equipped with the wireless tag reader 10 can identify the object. it can. The wireless tag reader 10 detects whether the wireless tag 2 can be read from the wireless tag 2 or changes in radio wave quality during the operation, and identifies the tag ID. The mobile terminal 1 can make the user visually recognize the identified tag ID on the display.

  FIG. 3 is a first sequence diagram in the present invention.

  The wireless tag reader 10 of the portable terminal 1 transmits a transmission wave for each wireless tag 2 and receives a response wave including a tag ID.

  The wireless tag reader 10 transmits a preamble radio wave as a UHF band transmission wave, and then transmits a radio wave modulated by a READ command and a radio wave of an unmodulated carrier. The wireless tag 2 has a built-in rectifier circuit, and obtains a direct current by rectifying the transmission wave received from the wireless tag reader 10 and operates as a power source. The wireless tag 2 accumulates power necessary for the initial operation by the preamble radio wave received from the wireless tag reader 10. Thereafter, the wireless tag 2 demodulates the radio wave including the READ command. The wireless tag 2 returns a response wave in which the tag ID is placed on the reflected wave of the radio wave of the unmodulated carrier.

  Further, the wireless tag reader 10 employs an “access method” method in which reading is performed from a plurality of wireless tags 2 at a time. In this case, one wireless tag can be read in several tens of milliseconds to several hundred milliseconds, and collision avoidance (anti-collision) by space / frequency division or time division is executed. The reading order includes a character string order of a tag ID of a wireless tag and a random number order method. As a result, the wireless tag reader can also read a plurality of wireless tags in a batch while preventing mutual interference.

  Note that the timing at which the wireless tag reader 10 starts transmitting a transmission wave to the wireless tag 2 may be based on a user tap operation on the reading start button of the mobile terminal 1.

(Step 1: S1) The portable terminal 1 records the tag ID of the read wireless tag in time series.
[Tag ID]-> [Reception Time]

(Step 2: S2) The portable terminal 1 compares the tag ID group read in the first predetermined time range with the tag ID group read in the next second predetermined time range, and the tag read only on one side It is determined that the object based on the ID is selected by the user. When the predetermined time range is, for example, 5 seconds, the tag ID group read in the previous 5 seconds is compared with the tag ID group read in the subsequent 5 seconds.

  For example, the user operates the wireless tag so that it cannot be read by holding a shield over the wireless tag portion of the desired object. Conversely, the user operates the wireless tag to be read by taking the desired object out of the desk or metal container. Thus, when the portable terminal and the desired object are close, the user can operate the object at hand. The portable terminal 1 determines that the user has operated by reading or not reading the wireless tag of the object.

As a further embodiment, the mobile terminal 1 may determine that the object based on the tag ID is selected by the user in any of the following cases.
(Example 1) first predetermined time range-> read next second predetermined time range-> not read next third predetermined time range-> read (Example 2) first predetermined time range- > Unable to read Next second predetermined time range-> Readable Next third predetermined time range-> Unable to read This caused the user to block the wireless tag 2 of the object. Can be determined.

  FIG. 4 is a second sequence diagram in the present invention.

(Step 1: S1) The mobile terminal 1 records the “radio wave quality” of the response wave in time series for each received tag ID. As the radio wave quality, for example, there is “Received Signal Strength Indication” (RSSI).
[Tag ID]->
[Receive time]
[Received signal strength]
Received power of response wave in wireless tag reader (dBm)
(Or, the received power of the transmission wave in the wireless tag is included in the response wave.
May be)

  By periodically repeating this process, the radio wave quality for each tag ID is recorded in time series. According to FIG. 2, the radio wave quality before the user's operation and the radio wave quality after the user's operation need only be recorded for the object.

(Step 2: S2) When the portable terminal 1 detects, for each tag ID, a difference equal to or greater than a predetermined threshold value between the previously acquired radio wave quality and the radio wave quality acquired later, based on the tag ID It is determined that the object is selected by the user. Here, radio wave qualities acquired at different times are compared for the same tag ID.

The time difference between the reception time of the response wave acquired earlier and the reception time of the response wave acquired later is set to a predetermined time interval (for example, 5 seconds). Thereby, it is possible to compare continuously as time elapses. For example, there are the following patterns.
Received radio wave intensity obtained earlier (eg radio wave quality 5 seconds before)
Received signal strength acquired later (for example, current signal quality)
* The user can confirm the desired object on the mobile terminal immediately after operating the desired object. For example, when the desired object is close to the portable terminal, the user can operate the object at hand.

Further, the predetermined threshold for determination may be different depending on the radio wave quality.
Received signal strength: Threshold value 10dBm
For example, when a difference in received radio wave intensity occurs over a predetermined threshold of 10 dBm,
It is determined that the user has operated the object based on the tag ID.

  FIG. 5 is an explanatory diagram showing a user's operation on an object in the present invention.

According to FIG. 5A, the user performs a “shielding” operation on the wireless tag portion of the desired object using an object such as a metal plate. By this operation, the wireless tag 2 cannot be read when viewed from the wireless tag reader 10, and the object can be specified.
According to FIG. 5B, the user performs a “shielding” operation on the wireless tag portion of the desired object using a part of the body such as a hand. By this operation, the received radio wave intensity with respect to the wireless tag 2 is reduced as viewed from the wireless tag reader 10, and the object can be specified.
According to FIG.5 (c), a user performs movement operation with respect to a desired target object in order to change the distance between radio | wireless tag readers. When the distance is increased, the received radio wave intensity with respect to the wireless tag 2 decreases as viewed from the wireless tag reader 10, and the object can be specified.
And the portable terminal 1 can make a user visually recognize by displaying identified tag ID on a display.

  FIG. 6 is a functional configuration diagram of the mobile terminal according to the present invention.

  For example, the mobile terminal 1 such as a smartphone or a tablet includes a wireless tag reader 10, a tag ID recording unit 11, and a target tag determination unit 12. The functional configuration units of the tag ID recording unit 11 and the target tag determination unit 12 are realized by executing a program that causes a computer mounted on the mobile terminal 1 to function.

  The wireless tag reader 10 includes an antenna and a tag ID reading unit. The tag ID reading unit transmits a transmission wave for each wireless tag and receives a response wave including the tag ID. Then, the tag ID reading unit outputs at least the reception time for each tag ID to the tag ID recording unit 11. Further, the tag ID reading unit may further output the radio wave quality (received radio wave intensity) to the tag ID recording unit 11.

[Tag ID recording unit 11]
The tag ID recording unit 11 records at least the reception time in time series for each tag ID of the read wireless tag. Further, the tag ID recording unit 11 may further record the radio wave quality of the response wave in time series for each tag ID.

[Target tag determination unit 12]
The target tag determination unit 12 compares the tag ID group read in the first predetermined time range with the tag ID group read in the next second predetermined time range, and the target based on the tag ID read only on one side It is determined that the object has been selected by the user.

  As a further embodiment, the target tag determination unit 12 uses, for each tag ID, the response wave obtained earlier for the tag IDs read in both the first predetermined time range and the next second predetermined time range. When a difference of a predetermined threshold value or more is detected between the radio wave quality and the radio wave quality of the response wave acquired later, it is further determined that the object based on the tag ID is selected by the user. Then, the identified tag ID is output to the application. The application can be visually recognized by the user by clearly indicating the identified tag ID on the display of the mobile terminal 1.

[Example: Data representing changes in received radio wave intensity]
According to the present invention, it is detected that the received radio wave intensity of the response wave changes when the user performs a blocking / moving operation on the wireless tag of the object. Here, the experimental data based on the specifications of the wireless tag reader as described below will be disclosed for changes in the received radio wave intensity.
Radio wave output of wireless tag reader: 250mW
UHF frequency band: 916.8MHz to 920.8MHz

  FIG. 7 is a graph showing changes in received radio wave intensity before and after the user's blocking operation.

  According to FIG. 7, the distance from the wireless tag reader to the wireless tag is approximately 20 cm. In addition, it is assumed that the user covers the wireless tag with a hand as a blocking operation, and there is a gap of about 0.5 to 1 cm between the hand and the wireless tag. At this time, as is apparent from FIG. 7, a difference of about 25 dBm is detected in the received radio wave intensity. By detecting this difference, it is possible to identify the object for which the user has performed a blocking operation.

  FIG. 8 is a graph showing changes in received radio wave intensity before and after the user's moving operation.

  According to FIG. 8, the distance from the wireless tag reader to the wireless tag changes every 10 cm between 10 cm and 70 cm. It is assumed that the user moves away or approaches the object attached with the wireless tag as a moving operation. At this time, as is apparent from FIG. 8, a difference of about 3 dBm is detected every 10 cm. By detecting this difference, it is possible to specify the object on which the user has performed the moving operation.

  As described above in detail, according to the portable terminal, the program and the method of the present invention, the wireless tag attached to each of the plurality of objects is collectively read and the wireless tag of the desired object by the user is read. Can be identified.

  Various changes, modifications, and omissions of the above-described various embodiments of the present invention can be easily made by those skilled in the art. The above description is merely an example, and is not intended to be restrictive. The invention is limited only as defined in the following claims and the equivalents thereto.

DESCRIPTION OF SYMBOLS 1 Portable terminal 10 Wireless tag reader 11 Tag ID recording part 12 Target tag determination part 2 Wireless tag

Claims (13)

In a portable terminal equipped with a wireless tag reader that collectively reads wireless tags attached to each of a plurality of objects,
In order to specify the target object by the operation on the wireless tag of the desired target object by the user,
Tag ID recording means for recording the tag ID of the read wireless tag in time series;
The tag ID group read in the first predetermined time range is compared with the tag ID group read in the next second predetermined time range, and the object based on the tag ID read only on one side is A portable terminal comprising target tag determining means for determining that the selected one is selected. The target tag determination means can read the tag ID in the first predetermined time range, cannot read the tag ID in the next second predetermined time range, and can read in the next third predetermined time range, or
If it cannot be read in the first predetermined time range, it can be read in the next second predetermined time range, and it cannot be read in the next third predetermined time range,
The mobile terminal according to claim 1, wherein an object based on the tag ID is determined to be selected by the user. The tag ID recording means further records the radio wave quality of the response wave in time series for each tag ID of the read wireless tag,
The target tag determination means acquires the radio wave quality of the response wave acquired earlier and the later acquired for each tag ID with respect to the tag ID read in both the first predetermined time range and the next second predetermined time range. An object based on the tag ID is further determined to be selected by the user when a difference equal to or greater than a predetermined threshold is detected from the radio wave quality of the response wave. The mobile terminal according to 1 or 2.   The mobile terminal according to claim 3, wherein the radio wave quality is received radio wave intensity, and a user's operation for blocking / moving a desired target with respect to the radio tag is determined. 5. The mobile terminal according to claim 1, wherein the wireless tag reader and the wireless tag are based on UHF (Ultra High Frequency) band passive RFID (Radio Frequency IDentification). 6. In a program for functioning a computer included in a portable terminal mounted on a wireless tag reader that collectively reads wireless tags attached to each of a plurality of objects,
In order to specify the target object by the operation on the wireless tag of the desired target object by the user,
Tag ID recording means for recording the tag ID of the read wireless tag in time series;
The tag ID group read in the first predetermined time range is compared with the tag ID group read in the next second predetermined time range, and the object based on the tag ID read only on one side is A program that causes a computer to function as a target tag determination unit that determines that a selection has been made. The target tag determination means can read the tag ID in the first predetermined time range, cannot read the tag ID in the next second predetermined time range, and can read in the next third predetermined time range, or
If it cannot be read in the first predetermined time range, it can be read in the next second predetermined time range, and it cannot be read in the next third predetermined time range,
The program according to claim 6, wherein the computer is caused to function so as to determine that the object based on the tag ID is selected by the user. The tag ID recording means further records the radio wave quality of the response wave in time series for each tag ID of the read wireless tag,
The target tag determination means acquires the radio wave quality of the response wave acquired earlier and the later acquired for each tag ID with respect to the tag ID read in both the first predetermined time range and the next second predetermined time range. The computer functions to further determine that the object based on the tag ID is selected by the user when a difference of a predetermined threshold value or more is detected with the radio wave quality of the response wave. The program according to claim 6 or 7, characterized by the above. 9. The radio wave quality according to claim 6, wherein the radio wave quality is received radio wave intensity, and the computer is caused to function to determine a blocking / moving operation of a desired object with respect to a radio tag by a user. The program described. In a wireless tag reading method of a mobile terminal equipped with a wireless tag reader that collectively reads wireless tags attached to each of a plurality of objects,
In order to specify the target object by the operation on the wireless tag of the desired target object by the user,
A first step of recording a tag ID of the read wireless tag in time series;
The tag ID group read in the first predetermined time range is compared with the tag ID group read in the next second predetermined time range, and the object based on the tag ID read only on one side is And a second step of determining that the selected one is selected. In the second step, the tag ID can be read in the first predetermined time range and cannot be read in the next second predetermined time range, and can be read in the next third predetermined time range, or
If it cannot be read in the first predetermined time range, it can be read in the next second predetermined time range, and it cannot be read in the next third predetermined time range,
The wireless tag reading method according to claim 10, wherein an object based on the tag ID is determined to be selected by the user. The first step is to further record the radio wave quality of the response wave in time series for each tag ID of the read radio tag.
In the second step, for the tag ID read in both the first predetermined time range and the next second predetermined time range, the radio wave quality of the response wave acquired earlier and the tag ID acquired later are obtained for each tag ID. The object based on the tag ID is further determined to be selected by the user when a difference equal to or greater than a predetermined threshold is detected with the radio wave quality of the response wave. Or the wireless tag reading method according to 11.   13. The wireless tag reading method according to claim 12, wherein the radio wave quality is received radio wave intensity, and a user's operation for blocking / moving the desired object with respect to the radio tag is determined.

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