JP4971631B2 - Data carrier system and server device - Google Patents

Description

  The present invention relates to a data carrier system and a server device, and more particularly to a technique for determining the type of an object to which a data carrier is attached.

In recent years, use of a data carrier (for example, RFID (Radio Frequency Identification)) configured to store a certain amount of data and read the stored contents wirelessly is advancing. For example, the data carrier is pre-classified according to the type of object to which it can be attached (fixed to the ground, portable items that can be carried by people such as bags and watches, and self-propelled items such as cars and buses). In addition, when the RFID reader recognizes (reads) a data carrier (for example, Patent Document 1), a process according to the classification of the data carrier is performed to perform user behavior prediction, and information corresponding to the prediction. Is provided to users and the like.
Japanese Patent Laying-Open No. 2004-206590 (FIG. 3A)

  By the way, since it is necessary to store the classification of the data carrier in advance in the conventional technique, it is necessary to update the stored information every time the object to which the data carrier is attached is changed. However, there is a problem that it is not realistic to perform this update for a large number of data carriers installed in the city.

  Accordingly, one of the objects of the present invention is to provide a data carrier system and a server device that can determine the type of an object to which a data carrier is attached.

A data carrier system according to the present invention for solving the above problem is a data carrier system including a mobile communication terminal and a server device, wherein the mobile communication terminal has a predetermined distance from the mobile communication terminal. A data carrier recognizing means for recognizing each data carrier by receiving data stored in a plurality of data carriers, a position information obtaining means for obtaining position information indicating the position of the mobile communication terminal; The server device includes: data carrier recognition information acquisition means for acquiring data carrier recognition information indicating the data carrier recognized by the mobile communication terminal; and movement of the mobile communication terminal calculated based on the position information A moving speed acquisition means for acquiring a speed, the data carrier recognition information, and the data carrier recognition information. The moving speed of the mobile communication terminal in the period in which the data carriers are aware indicated, based on, in which the said data carrier identification information, is the data carrier attached to the portable object, and to a fixed object without attached, of a portable information indicating at least a portion, comprising: a judging means for storing in association with each unit, the a, said determining means, said portable mobile speed of the communication terminal exceeds a predetermined value For the data carrier in which the time recognized by the mobile communication terminal exceeds the predetermined value during the above, the data carrier recognition information indicating the data carrier and the portable information are associated with each other in the storage means It is memorized.

  For example, a data carrier that is always recognized when a mobile communication terminal is moving or not is highly likely to be attached to a portable object that is carried with the mobile communication terminal. Therefore, the data carrier system can determine whether or not the type of the object to which the data carrier is attached is portable.

  Further, in the data carrier system, the determining means may determine whether each data carrier is portable according to a time recognized by the mobile communication terminal while the moving speed of the mobile communication terminal is equal to or higher than a predetermined value. It is good also as determining whether it is attached to.

  There is a high possibility that a data carrier that has been recognized for some time even when the mobile communication terminal is moving is attached to a portable object that is carried with the mobile communication terminal. Therefore, the data carrier system can determine whether or not the type of the object to which the data carrier is attached is portable.

  Further, in the data carrier system, the determination unit may determine the data for the data carrier for which the time recognized by the mobile communication terminal exceeds a predetermined value while the moving speed of the mobile communication terminal is equal to or higher than the predetermined value. It may be determined that the carrier is attached to the portable object.

  If each mobile communication terminal is moving, the data carrier attached to the portable object is likely to be always recognized by one of the portable communication terminals, but the data carrier is not attached to the portable object. Is not always recognized by any of the mobile communication terminals. Therefore, the data carrier system can determine that the type of the object to which the data carrier is attached is portable.

  Further, in the data carrier system, the determination unit has no mobile communication terminal that recognizes the data carrier for a specific data carrier while the moving speed is equal to or higher than the predetermined value for a time exceeding the predetermined value. In this case, it may be determined that the data carrier is not attached to a portable object.

  If each mobile communication terminal is moving, the data carrier attached to the portable object is likely to be always recognized by one of the portable communication terminals, but the data carrier is not attached to the portable object. Is not always recognized by any of the mobile communication terminals. Therefore, the data carrier system can determine that the type of the object to which the data carrier is attached is not portable.

  Further, in the data carrier system, the determination unit has a predetermined position indicated by the position information acquired by the position information acquisition unit for a mobile communication terminal that recognizes the data carrier. It may be determined that the data carrier is not attached to a fixed object depending on whether it is within the range.

  The data carrier attached to the fixed object should be recognized by the mobile communication terminal within the predetermined range and not be recognized by the mobile communication terminal outside the range. Therefore, the data carrier system can determine that the type of the object to which the data carrier is attached is not a fixed object.

The server device according to the present invention is a server device that is communicably connected to a mobile communication terminal, and is a data carrier indicating a data carrier whose distance from the mobile communication terminal recognized by the mobile communication terminal is a predetermined value or less. Data carrier recognition information acquisition means for acquiring recognition information, movement speed acquisition means for acquiring the movement speed of the mobile communication terminal calculated based on position information indicating the position of the mobile communication terminal, and the data carrier recognition information And the moving speed of the mobile communication terminal during the period of recognizing the data carrier indicated by the data carrier recognition information, the data carrier recognition information and the data carrier are attached to a portable object. serial in which, and not by way attached to a fixed object, between the portable information indicating at least a portion, in association with those Determination means to be stored in the means, the determination means for the data carrier for which the time recognized by the mobile communication terminal exceeds a predetermined value while the moving speed of the mobile communication terminal is greater than or equal to a predetermined value The data carrier recognition information indicating the data carrier and the portable information are associated with each other and stored in the storage means.

  Embodiments of the present invention will be described with reference to the drawings.

  FIG. 1 is a system configuration diagram of an RFID system 10 according to the present embodiment. As shown in the figure, the RFID system 10 includes a plurality of RFIDs 20, a plurality of mobile phones 30, and a server device 40. Each mobile phone 30 includes an RFID reader 31.

  The RFID 20 is a device that functions as a data carrier capable of storing data, and is attached to a fixed object, a self-propelled object, or a portable object. Here, those attached to a bus stop (fixed object), a store (fixed object), a car (self-propelled object), a bag (portable object), and a watch (portable object) are illustrated. The RFID 20 is configured to be read by the RFID reader 31. More specifically, the electromagnetic field generated by the RFID reader 31 may be read by modulating it according to stored data (hereinafter referred to as stored data) (passive type, semi-passive type). If the radio wave emitted from the RFID reader 31 is received, the radio wave may be read by transmitting the radio wave corresponding to the stored data (active type).

  Each RFID 20 is provided with identification information (RFID identification information) that can uniquely identify the RFID 20 from among the plurality of RFIDs 20. Each RFID 20 uses the RFID identification information provided to itself as one of the stored data. I remember it as a part.

  The mobile phone 30 is a kind of mobile communication terminal provided with a CPU and a memory, and is carried around by a person. The mobile phone 30 includes the RFID reader 31 as described above, and the RFID reader 31 recognizes each RFID 20 by receiving data stored in each of the plurality of RFIDs 20. Specifically, the RFID reader 31 transmits a reading signal to the RFID 20, and receives a data signal returned in response to the reading signal. The data signal includes the stored data, and the RFID reader 31 acquires the stored data from the data signal. Further, as described above, the storage data includes identification information, and the RFID reader 31 recognizes the RFID 20 by acquiring the RFID identification information from the acquired storage data.

  The mobile phone 30 has a positioning function by GPS (Global Positioning System). That is, it is configured such that its own position can be detected based on a signal transmitted by a GPS satellite, and position information indicating the detected position can be acquired. Further, the mobile phone 30 is connected to the server device 40 via a mobile communication system, and transmits position information and RFID identification information acquired by the RFID reader 31 to the server device 40. Configured as follows.

  The server device 40 is a computer including a CPU and a memory, and is connected to each mobile phone 30 via a mobile communication system. Based on the position information and RFID identification information transmitted from each mobile phone 30, the server device 40 determines whether each RFID 20 is attached to a portable object and whether it is attached to a fixed object. .

  Hereinafter, the details of the functions of the mobile phone 30 and the server device 40 will be described in detail with reference to these functional block diagrams.

  FIG. 2 is a diagram illustrating functional blocks of the mobile phone 30 and the server device 40. As shown in the figure, the mobile phone 30 includes a control unit 32, an RFID communication unit 33, a GPS reception unit 34, and a wireless communication unit 35. The control unit 32 further includes a position detection unit 321, an RFID recognition unit. 322 is configured. The RFID communication unit 33 and the RFID recognition unit 322 function as the RFID reader 31.

  The server device 40 includes a control unit 41, a wireless communication unit 42, and a storage unit 43. The control unit 41 further includes an RFID recognition information acquisition unit 411, a position information acquisition unit 412, a moving speed acquisition unit 413, and a determination. A part 414 is included.

  The control unit 32 operates according to a program stored in the memory of the mobile phone 30 and controls each unit of the mobile phone 30. Further, the control unit 32 generates the reading signal and outputs it to the RFID communication unit 33.

  The RFID communication unit 33 periodically transmits the reading signal input from the control unit 32 to the wireless section. Then, since the RFID 20 that has received this returns a data signal including the stored data, the RFID communication unit 33 receives the data signal transmitted by each RFID 20 and outputs it to the RFID recognition unit 322.

  The RFID recognition unit 322 recognizes the RFID 20 based on the data signal input from the RFID recognition unit 322. Specifically, the RFID 20 is recognized by acquiring the RFID identification information from the data signal. Then, the acquired RFID identification information is sequentially output to the wireless communication unit 35.

  The GPS receiver 34 periodically receives GPS signals transmitted from a plurality of GPS satellites, and outputs them to the position detector 321.

  The position detector 321 detects the position of the mobile phone 30 based on the GPS signal input from the GPS receiver 34. Specifically, the transmission delay time of the GPS signal received from each GPS satellite is calculated, and the distance between each GPS satellite and the GPS receiving unit 34 is calculated based on the calculated transmission delay time. Then, the position (latitude / longitude) of the mobile phone 30 is calculated according to this distance, and the result is acquired as position information. The position detection unit 321 sequentially outputs the acquired position information to the wireless communication unit 35.

  The wireless communication unit 35 sequentially transmits the input RFID identification information and position information to the server device 40.

  The wireless communication unit 42 receives the RFID identification information and the position information from each mobile phone 30, and outputs the RFID identification information to the RFID recognition information acquisition unit 411 and the position information to the position information acquisition unit 412.

  The RFID recognition information acquisition unit 411 acquires RFID recognition information indicating one or more RFIDs 20 recognized by each mobile phone 30 from the RFID identification information input from the wireless communication unit 42 and outputs the RFID recognition information to the determination unit 414.

  The position information acquisition unit 412 acquires position information indicating the position of each mobile phone 30 from the position information input from the wireless communication unit 42 and outputs the position information to the movement speed acquisition unit 413 and the determination unit 414.

  The movement speed acquisition unit 413 calculates the movement speed of each mobile phone 30 based on the position information input from the position information acquisition unit 412 and outputs it to the determination unit 414.

  The determination unit 414 is input from the moving speed acquisition unit 413 for each RFID recognition information input from the RFID recognition information acquisition unit 411 and each mobile phone 30 that is recognizing the RFID 20 indicated by the RFID recognition information. Based on the moving speed, it is determined whether each RFID 20 is attached to a portable object and whether it is attached to a fixed object.

  Hereinafter, the process of the determination part 414 is demonstrated concretely.

  First, a process for determining whether the RFID 20 is attached to a fixed object will be described.

  The determination unit 414 determines, for a certain RFID 20, whether or not the position indicated by the position information input from the position information acquisition unit 412 for the mobile phone 30 that recognizes the RFID 20 is within a predetermined range. It is determined that the RFID 20 is not attached to a fixed object. This process will be described in detail with reference to the drawings.

FIG. 3 is an explanatory diagram of processing of the determination unit 414 for determining that the RFID 20 is not attached to a fixed object. The determination unit 414 focuses on a certain RFID 20. Then, the position coordinates (X, Y) of one or more mobile phones 30 that recognize the RFID 20 of interest at a certain point in time are acquired and stored. The determination unit 414 obtains the minimum value (X _min ) and maximum value (X _max ) of X and the minimum value (Y _min ) and maximum value (Y _max ) of X from the stored position coordinates of each mobile phone 30. and _calculates the difference Ylng difference _{X max} and _{X min} Xlng and _{Y max} and _{Y min.}

  Here, when the reach distance (assumed flight distance) of the data signal transmitted by the RFID 20 is approximately Lr0, when the RFID 20 is fixed to the ground, the position range of the mobile phone 30 that recognizes the RFID 20 is It should be within the radius Lr0 from the RFID 20.

  Therefore, the determination unit 414 determines that the RFID 20 is not attached to a fixed object unless the range indicated by the position of each mobile phone 30 when recognizing the RFID 20 is approximately within the circle having the radius Lr0. Specifically, in order to simplify the calculation process, it is determined that the RFID 20 is not attached to a fixed object when X1ng> 2Lr0 or Y1ng> 2Lr0.

  In FIG. 3, the positions where the mobile phones 30-n (n = 1 to 10) detect the RFID 20 indicated by a black circle are indicated by white circles. As shown in the figure, when the mobile phones 30-1 to 8-8 are viewed only at the position where the RFID 20 is detected, the differences Xlng1 and Ylng1 at this time do not satisfy the condition of “X1ng> 2Lr0 or Ylng> 2Lr0” . However, when the positions where the mobile phone 30-9 and the mobile phone 30-10 detect the RFID 20 are also included, the condition “X1ng> 2Lr0 or Y1ng> 2Lr0” is satisfied. Therefore, in this case, the determination unit 414 determines that the RFID 20 is not attached to a fixed object.

  Next, processing for determining whether or not the RFID 20 is attached to a portable object will be described.

  The determination unit 414 determines whether each RFID 20 is attached to a portable object according to the time recognized by each mobile phone 30 while the moving speed of each mobile phone 30 is equal to or higher than a predetermined threshold speed. Determine. Specifically, the determination unit 414 allows the RFID 20 to be used for the RFID 20 in which the time recognized by each mobile phone 30 exceeds a predetermined value while the moving speed of each mobile phone 30 is equal to or higher than a predetermined threshold speed. It is determined that it is attached to the load. Conversely, when there is no mobile phone 30 that recognizes the RFID 20 while the moving speed is equal to or higher than the predetermined threshold speed for the specific RFID 20, the RFID 20 is not attached to the portable object. Is determined. This process will be described in detail with reference to the drawings.

  4 and 5 are explanatory diagrams of processing of the determination unit 414 for determining the RFID 20 attached to the portable object. The determination unit 414 first acquires the mobile phone 30 whose moving speed is higher than the predetermined threshold speed at predetermined time intervals, acquires the RFID 20 recognized by the mobile phone 30 in each period, and uses these as elements. Store the set F.

  Next, the determination unit 414 focuses on a certain RFID 20-n. Then, a set G of mobile phones 30 that have recognized the RFID 20-n in each period is acquired. When there is no mobile phone 30 that has continuously recognized the RFID 20-n for a predetermined time or more, the determination unit 414 determines that the RFID 20-n is not attached to a portable object. Specifically, as shown in FIG. 5A, when there is no mobile phone 30 in the G product set, the determination unit 414 turns the RFID 20-n (RFID 20-1 in FIGS. 4 and 5) into a portable item. It is determined that it is not attached. In this case, it is desirable to exclude a period in which there is no mobile phone 30 that recognizes the RFID 20-n.

  Further, the determination unit 414 determines whether or not the RFID 20-n is not attached to a fixed object by the above-described process, and if it is determined that the RFID 20-n is not attached to the fixed object, the RFID 20-n It is determined that it is attached.

  On the other hand, when there is a mobile phone 30 that has continuously recognized the RFID 20-n for a predetermined time or more, the determination unit 414 estimates that the RFID 20-n is attached to a portable object. Specifically, as shown in FIG. 5B, when there is only one mobile phone 30 in the product set of G, the determination unit 414 allows RFID 20-n (RFID 20-3 in FIGS. 4 and 5). Presumed to be attached to the load. In this case as well, it is desirable to exclude a period in which there is no mobile phone 30 that recognizes the RFID 20-n.

  Furthermore, if the determination unit 414 includes another RFID 20 determined to be a self-propelled item in at least one of the set F including the RFID 20-n estimated to be attached to the portable item, the determination unit 414 -N determines that it is attached to a portable object. This is because being detected together with the self-propelled object means being detected when going out.

  As described above, the determination unit 414 determines whether each RFID 20 is attached to a portable object and whether it is attached to a fixed object. And it is determined whether each RFID20 is attached to the self-propelled thing. Then, the result is stored in the storage unit 43.

  FIG. 6 is an example of an RFID classification table stored in the storage unit 43 by the determination unit 414. As shown in the figure, for each RFID identification information, the storage unit 43 is portable information indicating a classification of what is attached to a fixed object, what is attached to a self-propelled object, and what is attached to a portable object. Remember.

  As described above, the RFID system 10 can determine whether the type of the object to which the RFID 20 is attached is a portable object. It is also possible to determine whether the object is a fixed object or a self-propelled object.

  Further, the server device 40 can store the contents of the portable information and the distribution information in a content database, for example. In this way, when receiving the RFID identification information from the mobile phone 30, the server device 40 reads the portable information stored in the RFID classification table in association with the RFID identification information, and reads the read information from the content database. The distribution information stored in association with the portable information can be read out and returned to the mobile phone 30. That is, the server device 40 can perform information distribution according to the portable information.

  The present invention is not limited to the above embodiment. For example, in the above-described embodiment, the mobile phone 30 sequentially transmits the RFID identification information and the position information to the server device 40. However, the mobile phone 30 may transmit a certain amount of time collectively, You may make it transmit, when there exists a user's instruction | indication. In this case, it is preferable that a time stamp is provided for each piece of information to be transmitted, and the server device 40 associates the RFID identification information with the position information based on the time stamp.

1 is a system configuration diagram of an RFID system according to an embodiment of the present invention. It is a functional block diagram of the mobile telephone and server apparatus which concern on embodiment of this invention. It is explanatory drawing of the process for determining that RFID which concerns on embodiment of this invention is not attached to the fixed object. It is explanatory drawing of the process for determining RFID attached to the portable thing which concerns on embodiment of this invention. It is explanatory drawing of the process for determining RFID attached to the portable thing which concerns on embodiment of this invention. It is a figure which shows the RFID classification | category table which concerns on embodiment of this invention.

Explanation of symbols

  10 RFID system, 20 RFID, 30 mobile phone, 31 RFID reader, 32 control unit, 33 RFID communication unit, 34 GPS reception unit, 35 wireless communication unit, 40 server device, 41 control unit, 42 wireless communication unit, 43 storage unit 321 Position detection unit, 322 RFID recognition unit, 411 RFID recognition information acquisition unit, 412 Position information acquisition unit, 413 Movement speed acquisition unit, 414 determination unit.

Claims (2)

A data carrier system including a mobile communication terminal and a server device,
The mobile communication terminal is
Data carrier recognition means for recognizing each data carrier by receiving data stored in each of a plurality of data carriers whose distance from the mobile communication terminal is a predetermined value or less;
Position information acquisition means for acquiring position information indicating the position of the mobile communication terminal;
Including
The server device
Data carrier recognition information acquisition means for acquiring data carrier recognition information indicating the data carrier recognized by the mobile communication terminal;
A moving speed acquisition means for acquiring the moving speed of the mobile communication terminal calculated based on the position information;
Based on the data carrier recognition information and the moving speed of the mobile communication terminal during the period in which the data carrier indicated by the data carrier recognition information is recognized, the data carrier recognition information and the data carrier are portable. those attached to the object, and not by way attached to a fixed object, between the portable information indicating at least a portion, and determining means for storing in association with memory means,
Including
The determination means includes data carrier recognition information indicating the data carrier for the data carrier for which the time recognized by the mobile communication terminal exceeds a predetermined value while the moving speed of the mobile communication terminal is equal to or higher than a predetermined value. , Storing the portable information in association with the storage means,
A data carrier system characterized by that. A server device that is communicatively connected to a mobile communication terminal,
Data carrier recognition information acquisition means for acquiring data carrier recognition information indicating a data carrier whose distance from the mobile communication terminal recognized by the mobile communication terminal is a predetermined value or less;
A moving speed acquisition means for acquiring the moving speed of the mobile communication terminal calculated based on position information indicating the position of the mobile communication terminal;
Based on the data carrier recognition information and the moving speed of the mobile communication terminal during the period in which the data carrier indicated by the data carrier recognition information is recognized, the data carrier recognition information and the data carrier are portable. those attached to the object, and not by way attached to a fixed object, between the portable information indicating at least a portion, and determining means for storing in association with memory means,
Including
The determination means includes data carrier recognition information indicating the data carrier for the data carrier for which the time recognized by the mobile communication terminal exceeds a predetermined value while the moving speed of the mobile communication terminal is equal to or higher than a predetermined value. , Storing the portable information in association with the storage means,
The server apparatus characterized by the above-mentioned.

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