JP5002907B2 - Information processing apparatus and method - Google Patents

Description

  The present invention relates to an information processing apparatus and method, and is particularly suitable for use when reading information continuously from a plurality of wireless IC tags in which a recording medium such as an IC (Integrated Circuit) in which information is recorded is incorporated. The present invention relates to an information processing apparatus and method.

  Conventionally, there is a technique for performing contactless communication with a wireless IC tag (generally also referred to as an RFID tag) in which a recording medium including an IC or the like in which information is recorded (see, for example, Patent Document 1). ).

  As an example of use of a wireless IC tag, for example, in the logistics industry, a wireless IC tag in which information indicating a delivery destination is recorded is attached to a package, and is flowed on a conveyor. Can be used to sort the packages according to the delivery destination. In addition, for example, a wireless IC tag in which information indicating a boarding flight is attached to a baggage checked by an airplane passenger at an airport counter, and the information is read out from the wireless IC tag while moving the baggage. It can be used to sort luggage according to boarding flights.

  By the way, in order to sort the packages accurately in the above-described applications, it is necessary to grasp the arrangement order of the packages placed on the conveyor.

JP 2003-187196 A

  However, when packages are continuously placed on the conveyor, for example, as shown in FIG. 1, a plurality of wireless IC tags 3 may simultaneously exist in the communication area 2 of the antenna 1. In this state, communication with all the wireless IC tags 3 existing in the communication area 2 is possible, and communication is not necessarily performed with the wireless IC tags 3 attached in the order of package arrangement. There was a problem that the order could not be grasped.

  This arrangement order is based on the assumption that if the conveyor advances in a certain direction and packages are arranged on the conveyor as an example, the center position of the wireless IC tag 3 is a predetermined position (for example, an intermediate point of the antenna 1). ) (Hereinafter referred to as the passage time). Therefore, if the passage time of each wireless IC tag 3 is accurately grasped, it is possible to grasp the arrangement order of the packages.

  The present invention has been made in view of such a situation, and makes it possible to accurately grasp the passage time of each wireless IC tag arranged continuously.

A first information processing apparatus of the present invention is a wireless IC tag to be moved, a communication medium that wirelessly communicates with a recording medium on which information is recorded, and a wireless IC tag that includes an antenna that transmits information, Based on the output, the identification unit for identifying the wireless IC tag wirelessly communicated with the communication unit at a predetermined time interval and outputting the identification result, and the time-series identification result output from the identification unit are the same as the continuous identification result. and correcting means for correcting, based on the sex, on the basis of the identification result of the time series that has been corrected by the correction means, it viewed including the wireless IC tag and a specifying means for specifying timing which has passed through the predetermined position, specifying means, The center of the period in which the same identification result is obtained is specified as the timing when the wireless IC tag passes a predetermined position .

In the first information processing apparatus of the present invention , based on the output of wireless communication with the wireless IC tag, the wireless IC tag that has wirelessly communicated is identified at a predetermined time interval, and the identification result is output. Are corrected based on the continuity of the same identification result, and the timing at which the wireless IC tag passes a predetermined position is specified based on the corrected time-series identification result. Specifically, the center of the period in which the same identification result is obtained is specified as the timing when the wireless IC tag passes a predetermined position.

  Therefore, the timing at which the wireless IC tag passes a predetermined position is grasped, and the arrangement order of the wireless IC tags can be grasped.

  This communication means is constituted by an antenna, for example. The identification means is constituted by a reader / writer, for example. The specifying means is constituted by a CPU, for example.

  The correction unit may perform at least one of a smoothing process and a distance conversion process on the time-series identification result.

A first information processing apparatus according to the present invention includes a detection unit that detects at least one of a size or an arrangement interval of an object that is attached and moved continuously by a wireless IC tag, and a detection result of the detection unit. Based on this, it is possible to further include association means for associating the identification result of the identification means with one object.

  Thereby, the timing when each target object passed the predetermined position can be grasped.

A first information processing method of the present invention is a wireless IC tag to be moved, a communication step for wirelessly communicating with a recording medium on which information is recorded and a wireless IC tag including an antenna for transmitting information, Based on the output of the process, the identification step of identifying the wireless IC tag wirelessly communicated in the process of the communication step at a predetermined time interval and outputting the identification result, and the time-series identification result output in the process of the identification step, A correction step for correcting based on the continuity of the same identification result, and a specifying step for specifying the timing at which the wireless IC tag passes a predetermined position based on the time-series identification result corrected by the processing of the correction step; only contains, the processing of the specific steps, the center of the period in which the same identification result is obtained, that the wireless IC tag to identify as a timing which has passed through the predetermined position And butterflies.

In the first information processing method of the present invention, wireless IC tags communicated wirelessly are identified at a predetermined time interval and an identification result is output, and time-series identification results are corrected based on continuity of the same identification results Then, based on the corrected time-series identification result, the timing when the wireless IC tag passes a predetermined position is specified. Specifically, the center of the period in which the same identification result is obtained is specified as the timing when the wireless IC tag passes a predetermined position.

Accordingly, similarly to the first information processing apparatus of the present invention, the timing at which the wireless IC tag passes a predetermined position is grasped, and the arrangement order of the wireless IC tags can be grasped.

A second information processing apparatus according to the present invention includes a wireless IC tag that is attached to each object that is continuously arranged and moved, and that includes a recording medium on which information on the object is recorded and an antenna that transmits the information. A communication means for wireless communication, a detection means for detecting electromagnetic wave intensity from a wireless IC tag wirelessly communicated with the communication means based on an output of the communication means, and a wireless IC tag attached to the object in a predetermined sticking direction A database in which a pasting direction of a wireless IC tag is associated with a time-series binarized change pattern of electromagnetic wave intensity detected when the object is moved together with the object, a database, and output from the detection unit by pattern matching between the binary change pattern of the time series of the electromagnetic wave strength, communication means and radio communication with the identifying means for identifying the sticking direction of the wireless IC tag Characterized in that it comprises a.

In the second information processing apparatus of the present invention, the electromagnetic wave intensity from the wireless IC tag wirelessly communicated is detected, and the database and the time-series binary change pattern of the detected electromagnetic wave intensity are compared. Based on the above, the attaching direction of the wireless IC tag that has performed wireless communication is specified.

Therefore, it is possible to understand how the direction pasting of the wireless IC tag.

  In this database, information based on the results of experiments performed in advance is registered.

According to a second information processing apparatus of the present invention, a detection unit that detects at least one of a size or an arrangement interval of an object that is continuously arranged and moved, and a specification result of the specification unit based on a detection result of the detection unit And an associating means for associating the object with one object.

According to a second information processing method of the present invention, there is provided a wireless IC tag having a recording medium on which information relating to the object is recorded and an antenna for transmitting the information, which are attached to the objects that are continuously arranged and moved. A communication step for wireless communication, a detection step for detecting the electromagnetic wave intensity from the wireless IC tag wirelessly communicated in the processing of the communication step based on the output of the processing of the communication step, and a predetermined attachment direction attached to the object From the database in which the pasting direction of the wireless IC tag is registered in association with the time-series binarized change pattern of the electromagnetic wave intensity detected when the wireless IC tag is moved together with the object, and the processing of the detection step by pattern matching between the binary change pattern of the time series of the electromagnetic wave intensity output, a wireless IC that radio communication in the process of communication step Characterized in that it comprises a specifying step of specifying the sticking direction of the grayed.

In the second information processing method of the present invention, the electromagnetic wave intensity from the wireless IC tag wirelessly communicated is detected, the database is compared with the time-series binary change pattern of the detected electromagnetic wave intensity, and the comparison result Based on the above, the attaching direction of the wireless IC tag that has performed wireless communication is specified.

Therefore, similarly to the second information processing apparatus of the present invention, it is possible to grasp the direction pasting of the wireless IC tag.

A third information processing apparatus according to the present invention includes a wireless IC tag that is attached to each object that is continuously arranged and moved, has a recording medium on which information about the object is recorded, and an antenna that transmits the information. Based on the output of the communication means, the communication means for wireless communication, the identification means for identifying the wireless IC tag wirelessly communicated with the communication means at a predetermined time interval and outputting the identification result, the time series output from the identification means Correction means for correcting the identification result based on the continuity of the same identification result, and estimation for estimating the timing when the wireless IC tag has passed a predetermined position based on the time-series identification result corrected by the correction means and means, based on an output of the communication means, detection means for detecting the intensity of electromagnetic waves from the communication unit and wireless communication with the wireless IC tag, attached in a predetermined sticking direction on the object The change pattern of the time series of the electromagnetic wave intensity detected when the line IC tag is moved together with the object, in the period of sticking direction, and timing change pattern wireless IC tag has passed the predetermined position of the wireless IC tag Output from the database and the detection means with reference to a database in which passage times represented by relative timing are registered in association with each other and a timing at which the wireless IC tag estimated by the estimation means passes a predetermined position. A specifying unit that compares a time-series change pattern of the electromagnetic wave intensity and specifies a pasting direction of the wireless IC tag wirelessly communicated with the communication unit and a passage time when the wireless IC tag passes a predetermined position based on the comparison result It is characterized by including.

In the third information processing apparatus of the present invention, the electromagnetic wave intensity from the wireless IC tag that wirelessly communicated is detected , and the database is detected with reference to the timing at which the estimated wireless IC tag passes a predetermined position . The time-series change pattern of the electromagnetic wave intensity is compared, and the pasting direction of the wireless IC tag wirelessly communicated and the passage time when the wireless IC tag passes a predetermined position are specified based on the comparison result.

Therefore, it is possible to pasting direction Contact and wireless IC tag of the wireless IC tag to grasp the passage time which has passed through the predetermined position.

  In this database, information based on the results of experiments performed in advance is registered.

The third information processing apparatus according to the present invention includes a detection unit that detects at least one of a size or an arrangement interval of an object that is continuously arranged and moved, and a specification result of the specification unit based on a detection result of the detection unit. And an associating means for associating the object with one object.

  Thereby, it is possible to grasp the timing at which the package passes a predetermined position and the spatial characteristics (for example, a pasting direction, a pasting height, etc.) of the pasted wireless IC tag.

According to a third information processing method of the present invention, there is provided a wireless IC tag having a recording medium on which information relating to the object is recorded and an antenna for transmitting the information, which are respectively attached to the objects that are continuously arranged and moved. A communication step for wireless communication, an identification step for identifying wireless IC tags wirelessly communicated in the communication step processing at predetermined time intervals and outputting an identification result based on the output of the communication step processing, and an identification step processing A correction step for correcting the output time-series identification result based on the continuity of the same identification result, and the wireless IC tag at a predetermined position based on the time-series identification result corrected by the processing of the correction step an estimation step of estimating a timing which has passed through the, on the basis of the output of the processing of the communication step, collection from the wireless IC tag wireless communication process of the communication step A detection step of detecting the wave intensity, the change pattern of the time series of the electromagnetic wave intensity detected when the wireless IC tag attached in a predetermined sticking direction is moved together with the object to the object, application of the wireless IC tag The direction and the electromagnetic wave intensity output from the processing of the detection step and the database in which the passage time indicating the timing at which the wireless IC tag has passed a predetermined position is registered in association with the relative timing in the period of the change pattern The time-series change pattern is compared with reference to the timing when the wireless IC tag estimated in the estimation step processing passes a predetermined position, and the wireless communication is performed in the communication step processing based on the comparison result. the sticking direction and wireless IC tag of the IC tag and a specifying step of specifying the passage time which has passed through the predetermined position And features.

In the third information processing method of the present invention, the electromagnetic wave intensity from the wireless IC tag that wirelessly communicated is detected , and the database is detected with reference to the timing at which the estimated wireless IC tag passes a predetermined position . The time-series change pattern of the electromagnetic wave intensity is compared, and the pasting direction of the wireless IC tag wirelessly communicated and the passage time when the wireless IC tag passes a predetermined position are specified based on the comparison result.

Therefore, similarly to the third information processing apparatus of the present invention can be bonded with the direction you and the wireless IC tag of the wireless IC tag to grasp the passage time which has passed through the predetermined position.

  According to the present invention, it is possible to accurately grasp the passage times of continuously arranged wireless IC tags.

  Hereinafter, specific embodiments to which the present invention is applied will be described in detail with reference to the drawings.

  FIG. 2 shows a configuration example of a tag communication system to which the present invention is applied. The tag communication system 10 detects an antenna 11 that receives electromagnetic waves transmitted from the wireless IC tag 3 and radiates electromagnetic waves for communicating information with the wireless IC tag 3, and a load 16 on the conveyor 15. A sensor 12 that supplies a detection signal corresponding to 1 to a personal computer (hereinafter referred to as a PC) 14, a transmission signal input from the PC 14 is converted into an electromagnetic wave and output to the antenna 11, and the electromagnetic wave received by the antenna 11 The reader / writer 13 that converts the received signal into a PC 14 and outputs it to the PC 14, the PC 14 that specifies the passage time of the wireless IC tag 3 based on the received signal input from the reader / writer 13, and information indicating the delivery destination and the like in advance. It is composed of a conveyor 15 that moves a package 16 to which the recorded wireless IC tag 3 is attached.

  The reader / writer 13 causes the antenna 11 to start radiating electromagnetic waves in response to a read request from the PC 14. Corresponding to the radiation of the electromagnetic wave, each wireless IC tag 3 existing in the communication area of the antenna 11 is supplied with power from the radiated electromagnetic wave, and stores the information (the wireless IC tag 3 is stored using the power). Information for identification, information indicating the delivery destination of the package, etc.) are returned as electromagnetic waves. Therefore, when there are a plurality of wireless IC tags 3 in the communication area of the antenna 11, the plurality of wireless IC tags 3 reply, the antenna 11 receives the returned electromagnetic waves, and the reader / writer 13 It is converted into a received signal at a predetermined time interval.

  The reader / writer 13 also supplies the PC 14 with the radio wave intensity of the electromagnetic wave returned from the wireless IC tag 3 received by the antenna 11. Further, the reader / writer 13 can record the predetermined information on the wireless IC tag 3 by converting the predetermined information input from the PC 14 into an electromagnetic wave and outputting the electromagnetic wave to the antenna 11.

  The conveyor 15 moves linearly and at a constant speed in a certain direction at least when the loaded packages 16 pass through the communication area of the antenna 11, and the packages 16 are arranged in a row even if the intervals are indefinite. It shall be arranged in. Therefore, if the passage time of the wireless IC tag 3 is accurately grasped, the arrangement order of the luggage 16 can be accurately grasped.

  By the way, in order to accurately grasp the passage time of the wireless IC tag 3, the size of the package 16 to which the wireless IC tag 3 is attached, the interval mounted on the conveyor 15, and the direction in which the wireless IC tag 3 is attached are also important. It becomes an element. However, in consideration of actual use in the logistics industry or the like, the size and interval of the luggage 16 and the direction in which the wireless IC tag 3 is attached are random.

  Therefore, the size and interval of the luggage 16 are determined based on the detection signal from the sensor 12 including a phototube as shown in FIG. However, FIG. 3 is a schematic view of the state in which the luggage 16 is disposed on the conveyor 15 as viewed from above. For the direction where the wireless IC tag 3 is attached, the database prepared in advance (the radio field intensity when the wireless IC tag 3 is passed through the communication area of the antenna 11 with various directions directed, The direction of the wireless IC tag 3 is registered in association with the time series pattern of the detection result) and the time series pattern of the actually received radio wave intensity is determined based on pattern matching (details will be described later).

  FIG. 4 shows a configuration example of the PC 14. The PC 14 includes a CPU (Central Processing Unit) 21. An input / output interface 25 is connected to the CPU 21 via the bus 24. A ROM (Read Only Memory) 22 and a RAM (Random Access Memory) 23 are connected to the bus 24.

  The input / output interface 25 includes an input unit 26 including an input device such as a keyboard and a mouse operated by a user, and an output including a display such as a CRT (Cathode Ray Tube) or an LCD (Liquid Crystal Display) for displaying an operation screen. 27, a storage unit 28 including a hard disk drive for storing programs and various data, and a communication unit 29 including a modem, a LAN (Local Area Network) adapter, and the like, and executing communication processing via a network represented by the Internet. Is connected. Also, a magnetic disk (including a flexible disk), an optical disk (including a CD-ROM (Compact Disc-Read Only Memory), a DVD (Digital Versatile Disc)), a magneto-optical disk (including an MD (Mini Disc)), or a semiconductor A drive 30 for reading / writing data from / to a recording medium 31 such as a memory is connected.

  Further, a reader / writer interface (I / F) 32 for connecting the reader / writer 13 and a sensor interface (I / F) 33 for connecting the sensor 12 are connected to the input / output interface 25. .

  A program that causes the PC 14 to execute tag passage time specifying processing, which will be described later, is supplied to the PC 14 while being stored in the recording medium 31, read by the drive 30, and installed in a hard disk drive built in the storage unit 28. . The program installed in the storage unit 28 is loaded from the storage unit 28 to the RAM 23 and executed by a command of the CPU 21 corresponding to a command from the user input to the input unit 26.

  FIG. 5 shows a first configuration example of functional blocks realized by the CPU 21 of the PC 14 executing the program.

  The reader / writer control unit 41 transmits a read request to the reader / writer 13 and outputs the corresponding output (including the received signal and the radio wave intensity information) of the reader / writer 13 to the tag identifying unit 42 and the radio wave intensity detecting unit. Output to 45. Further, the reader / writer control unit 41 transmits information to be written to the wireless IC tag 3 to the reader / writer 13.

  Based on the information included in the received signal input from the reader / writer 13, the tag identifying unit 42 identifies the wireless IC tag 3 that has transmitted the received signal, and corrects the identification result as shown in FIG. 6A, for example. To the unit 43.

  Here, “identify the wireless IC tag 3” means that the data recorded in the wireless IC tag 3 can be read and the data can be normally read based on the error correction code method or the error detection code method. Refers to that.

  FIG. 6A shows a time-series tag identification success / failure pattern of each wireless IC tag 3 (in this case, tags A, B, C, and D). In FIG. 6A, 1 indicates that the wireless IC tag 3 has been identified, and 0 indicates that it has not been identified. Hereinafter, when each wireless IC tag 3 is individually identified, it is referred to as tags A, B, C, and D.

  In the example of FIG. 6A, tag A is identified at timing t1, not identified at timing t2, tag A is identified at timing t3, tags A and B are identified at timing t4, and tags A and D are identified at timing t5. Are identified, tags A, B, and C are identified at timing t6, tags A, B, and C are identified at timing t7, tags B and C are identified at timing t8, and tags B, C, and D are identified at timing t9. Has been identified. The description after timing t10 is omitted.

  FIG. 7 is a line graph corresponding to FIG. 6A. A broken line indicated by a circle in FIG. 7A indicates the identification timing of the tag A, and a broken line indicated by an X in FIG. 7B indicates the identification timing of the tag B. Yes. The broken lines corresponding to the tags C and D are omitted.

  The correction unit 43 corrects the time-series identification result output from the tag identification unit 42 according to a predetermined rule based on the continuity of the same identification result, and outputs the correction result to the passage time specifying unit 44. Hereinafter, the correction by the correction unit 43 is also described as smoothing or smoothing processing.

  The predetermined rule is defined as follows, for example. However, the following rules (1) to (5) shall be applied in the priority order of (1), (2), (3), (4), and (5).

(1) Regarding 1 and the same wireless IC tag 3, when 1 (indicating that it has been identified) continues two or more times, one immediately preceding 0 (indicating that it has not been identified) is sandwiched by 1 If it is, 0 is corrected to 1.
(2) Regarding 1 and the same wireless IC tag 3, when 1 (indicating that it has been identified) continues twice or more, 1 immediately after that (indicating that it has not been identified) is sandwiched between 1 If it is, 0 is corrected to 1.
(3) When 1 (indicating that it has been identified) continues for two or more times with respect to the same wireless IC tag 3, two or more consecutive 0s immediately before that (not identified) 1) is corrected to 0 when 1 is sandwiched.
(4) When 1 (indicating that it has been identified) continues for two or more times for the same wireless IC tag 3, two or more consecutive 0s immediately after that (not identified) 1) is corrected to 0 when 1 is sandwiched.
(5) When 1 is sandwiched between 0 (indicating that the wireless IC tag 3 is not identified), the 1 is corrected to 0.

  FIG. 6B shows the result of smoothing by applying the above-described rules (1) to (5) to the time-series tag identification success / failure pattern shown in FIG. 6A (hereinafter referred to as a smoothed tag identification success / failure pattern). Yes.

  In FIG. 6B as well, 1 indicates that the wireless IC tag 3 is regarded as identified, and 0 indicates that it is regarded as not identified. In the example of FIG. 6B, tag A is smoothed as identified at timings t1 to t7. Tag B is smoothed as identified at timings t4 to t9. Tag C is smoothed as identified at timings t6 to t13. The tag D is smoothed as identified at timings t9 to t15.

  The passage time specifying unit 44 converts the time-series smoothed tag identification success / failure pattern input from the correction unit 43 into an evaluation value of the reception timing for each wireless IC tag 3, and sets the timing at which the evaluation value is maximum. It identifies that it is the passage time of each wireless IC tag 3 and outputs it to the associating unit 50. Hereinafter, the time series pattern of the evaluation value is described as a tag center position evaluation pattern. Specifically, this conversion converts a continuous 1 (indicating that it has been identified) into an evaluation value indicating a distance to the nearest 0 (indicating that it has not been identified). For example, when the smoothed tag identification success / failure pattern is 0011110, it is converted to 0012210 as a tag center position evaluation pattern. Therefore, for example, the time-series smoothed tag identification success / failure pattern shown in FIG. 6B is converted into the tag center position evaluation pattern shown in FIG. 6C. Hereinafter, the process of converting the smoothing tag identification success / failure pattern into the evaluation value by the passage time specifying unit 44 is also referred to as a distance conversion or a distance conversion process.

  According to the tag center position evaluation pattern shown in FIG. 6C, the passage time of tag A is specified at timing t4. The passing time of the tag A is specified at the center between the timings t6 and t7. The passing time of the tag C is specified at the center between timings t9 and t10. The passing time of tag D is specified at timing t12.

  FIG. 8 is a line graph corresponding to FIG. 6C, in which a broken line indicated by a circle indicates an evaluation value at each timing of the tag A, and a broken line indicated by an X indicates an evaluation value at each timing of the tag B. The broken lines corresponding to the tags C and D are omitted. As is clear from comparison between FIG. 7 and FIG. 8, although the center of the identification timing is unclear in the smoothing identification result (FIG. 7), the identification result is smoothed and the smoothed identification result is further displayed. By converting to an evaluation value by the distance conversion process, the center of the identification timing becomes clear. Therefore, the passage time specifying unit 44 can specify a more accurate passage time.

  Note that at least one of the smoothing process by the correction unit 43 or the distance conversion process by the passage time specifying unit 44 is omitted, and the identification result in which at least one of the smoothing process or the distance conversion process is omitted in the passage time specifying unit 44. The center of the period in which the same identification result is obtained may be specified as the passage time.

  Returning to FIG. The radio wave intensity detection unit 45 detects the radio wave intensity of the received signal from the output of the reader / writer 13 supplied from the reader / writer control unit 41 and outputs it to the binarization unit 46. The binarizing unit 46 outputs to the binary pattern matching unit 47 a time-series binary pattern of the radio wave intensity detected by the radio wave intensity detector 45 that is equal to or greater than a predetermined threshold. The binary pattern matching unit 47 performs pattern matching between a binary pattern of actual radio wave intensity input from the binarizing unit 46 and a binary pattern of radio wave intensity registered in the database (DB) 48 in advance. Then, the application direction (spatial feature) of the wireless IC tag 3 whose radio field intensity is measured based on the matching result is specified and output to the associating unit 50.

  Instead of pattern matching, feature values of the detected binary pattern and the binary pattern registered in the database 48 are extracted, the extracted feature values are compared, and the comparison results (difference, ratio, etc.) are compared. ) May be used to specify the direction (spatial feature) of the wireless IC tag 3 whose radio field intensity has been measured.

  In the database 48, binary patterns of time-series radio wave intensity when the wireless IC tag 3 is passed in front of the antenna 11 at various constant speeds in various directions are displayed in the direction in which the wireless IC tag 3 is attached. Corresponding and registered in advance. Spatial features other than the pasting direction may be registered in association with each other.

  In addition, the database 48 stores binary patterns of time-series radio wave intensity when the wireless IC tag 3 is passed in front of the antenna 11 at various constant speeds in various directions. It is only necessary to register in association with the pasting direction. In this case, the binary pattern matching unit 47 performs pattern matching after normalizing one of the actually detected binary pattern and the binary pattern registered in the database 48 in the time axis direction with the other. To.

  The package estimation unit 49 estimates the size and interval of the package 16 on the conveyor 15 based on the detection signal input from the sensor 12, and outputs the estimation result to the association unit 50.

  Corresponding unit 50 is based on the estimation result input from package estimation unit 49, the passing time of each wireless IC tag 3 input from passing time specifying unit 44, and each wireless input from binary pattern matching unit 47. The pasting direction of the IC tag 3 and one package 16 are associated with each other, and the associated result is output to the subsequent stage.

  Here, a method of registering a binary pattern of radio wave intensity in the database 48 will be described.

  For example, as illustrated in FIG. 9A, the wireless IC tag 3 and the antenna 11 are parallel to each other (the direction in which the wireless IC tag 3 is attached is defined as the X direction) and the antenna 11 is allowed to pass through the communication area. At this time, if the radio wave intensity is detected as shown in FIG. B, the binary pattern shown in FIG. C is registered in the database 48 in association with the attaching direction (X direction) of the wireless IC tag 3. Is done.

  Further, for example, as shown in FIG. 10A, the surface of the wireless IC tag 3 and the surface of the antenna 11 are orthogonal to each other, and the perpendicular of the surface of the wireless IC tag 3 is parallel to the moving direction (the wireless IC tag 3 is attached). If the radio field intensity is detected as shown in FIG. B at that time, the binary pattern shown in FIG. 3 and registered in the database 48 in association with the pasting direction (Y direction).

  Further, for example, as shown in FIG. 11A, the surface of the wireless IC tag 3 and the surface of the antenna 11 are orthogonal to each other, and the perpendicular of the surface of the wireless IC tag 3 is orthogonal to the moving direction (the direction in which the wireless IC tag 3 is attached) Is defined as the Z direction), and if the radio wave intensity is detected as shown in FIG. B at that time, the binary pattern shown in FIG. Are registered in the database 48 in association with the pasting direction (Z direction).

  FIG. 12 shows the relationship between the binary pattern of the radio wave intensity output from the binarization unit 46 and the pasting direction specified by the binary pattern matching unit 47. When the binary pattern shown in Example 1 is output from the binarization unit 46, the binary pattern matches the binary pattern shown in FIG. 9C, so that the pasting direction is specified as the X direction. When the binary pattern shown in Example 2 is output from the binarization unit 46, the binary pattern matches the binary pattern shown in FIG. 10C, so that the pasting direction is specified as the Y direction. When the binary pattern shown in Example 3 is output from the binarization unit 46, the binary pattern matches the binary pattern shown in FIG. 11C, so that the pasting direction is specified as the Z direction. When the binary pattern shown in Example 4 is output from the binarizing unit 46, the binary pattern matches the binary pattern shown in FIG. 9C, so that the pasting direction is specified as the X direction.

  In the database 48, binary patterns of radio wave intensity corresponding to directions other than the X, Y, and Z directions shown in FIGS. 9 to 11 may be registered in advance. Further, spatial characteristics such as the height from the other floor surface of the affixed wireless IC tag 3 and the distance from the antenna 11 may be registered in association with each other.

  Next, tag passage time specifying processing according to the first configuration example of the PC 14 shown in FIG. 5 will be described with reference to the flowchart of FIG.

  In step S <b> 1, the reader / writer control unit 41 issues a read request to the reader / writer 13. In response to this, the reader / writer 13 causes the antenna 11 to start radiating electromagnetic waves. Each wireless IC tag 3 existing in the communication area of the antenna 11 is supplied with electric power from the radiation of the electromagnetic wave, and stores information using the electric power (information for identifying the wireless IC tag 3, luggage) Information indicating the delivery address of the customer) is returned as an electromagnetic wave. The antenna 11 receives this reply, and the reader / writer 13 converts the reception result into a received signal at a predetermined time interval and starts outputting it to the reader / writer control unit 41. Further, the radio wave intensity of the electromagnetic wave returned from the wireless IC tag 3 received by the antenna 11 starts to be output to the reader / writer control unit 41.

  The radio wave intensity detection unit 45 detects the radio wave intensity from the output of the reader / writer 13 supplied from the reader / writer control unit 41 and outputs it to the binarization unit 46, and the binarization unit 46 detects the radio wave intensity detection unit. By comparing the radio field intensity detected by 45 with a predetermined threshold value, a binary pattern of time series radio field intensity is generated and output to the binary pattern matching unit 47 is started. On the other hand, the baggage estimating unit 49 starts estimating the size and interval of the baggage 16 on the conveyor 15 based on the detection signal input from the sensor 12 and starts outputting the estimation result to the associating unit 50.

  In step S2, the tag identification unit 42 identifies the wireless IC tag 3 that has transmitted the received signal based on the information included in the received signal input from the reader / writer 13, and the identification result (for example, shown in FIG. 6A). Output to the correction unit 43.

  In step S3, the correction unit 43 smoothes the identification result input from the tag identification unit 42 according to a predetermined rule based on the continuity of the same identification result, and the smoothed identification result (for example, shown in FIG. 6B). Are output to the passage time specifying unit 44. In step S4, the passage time specifying unit 44 converts the smoothed identification result input from the correction unit 43 into an evaluation value by a distance conversion process (for example, one shown in FIG. 6C), and the evaluation value is the maximum. Is identified as the passage time of each wireless IC tag 3, and is output to the associating unit 50.

  Note that at least one of the smoothing process by the correction unit 43 in step S3 or the distance conversion process by the passage time specifying unit 44 in step S4 is omitted, and the passage time specifying unit 44 performs at least the smoothing process or the distance conversion process. You may make it specify the center of the period when the identification result which the identification result which one side abbreviate | omitted was obtained as the passage time.

  In step S <b> 5, the binary pattern matching unit 47 performs pattern matching between the binary pattern of time series radio wave intensity input from the binarizing unit 46 and the binary pattern registered in the database 48 in advance. Then, the pasting direction associated with the matched binary pattern is specified as the pasting direction of the wireless IC tag 3 whose radio field intensity has been measured, and is output to the associating unit 50.

  In step S6, the associating unit 50 determines the passing time of each wireless IC tag 3 input from the passing time specifying unit 44 and the pasting direction of the wireless IC tag 3 input from the binary pattern matching unit 47. Using the estimation result input from the estimation unit 49, it is associated with one package 16, and the associated result is output to the subsequent stage.

  In step S <b> 7, the reader / writer 13 converts predetermined information (for example, information indicating that the wireless IC tag 3 has been successfully recognized) input from the reader / writer control unit 41 into an electromagnetic wave to convert the antenna 11. To output. Thereby, the predetermined information is recorded on the wireless IC tag 3.

  Note that the processes in steps S2 to S7 described above are intermittently performed in parallel with the input from the upper stage. This is the end of the description of the tag passage time specifying process according to the first configuration example of the PC 14.

  Next, FIG. 14 shows a second configuration example of functional blocks realized by the CPU 21 of the PC 14 executing a predetermined program.

  The reader / writer control unit 61 transmits a read request to the reader / writer 13 and outputs the corresponding output (including the received signal and the radio wave intensity information) of the reader / writer 13 to the tag identifying unit 62 and the radio wave intensity detecting unit. Output to 65. The reader / writer control unit 61 transmits information to be written to the wireless IC tag 3 to the reader / writer 13.

  The tag identifying unit 62 identifies the wireless IC tag 3 that has transmitted the received signal based on information included in the received signal input from the reader / writer 13, and sequentially outputs the identification result to the correcting unit 63.

  FIG. 15 summarizes an example of identification results output from the tag identification unit 62 in a table. In FIG. 15A, 1 indicates that it has been identified, and 0 indicates that it has not been identified. That is, in the example of FIG. 15A, the tag A at the timings t1 to t3, the tag B at the timing t4, the tag A at the timing t5, the tag B at the timing t6, the tag A at the timing t7, and the timings t8 and t9. Tag B indicates that tag C has been identified at timing t10. The description after timing t11 is omitted.

The correction unit 63 smoothes the time-series identification result input from the tag identification unit 62 according to a predetermined rule (for example, the above-described rules (1) to ( 5 )) based on the continuity of the same identification result. It outputs to the time estimation part 64.

  FIG. 15B shows the result of smoothing by applying the above-described rules (1) to (5) to the time-series identification result shown in FIG. 15A.

  In FIG. 15B as well, 1 indicates that it has been identified, and 0 indicates that it has not been identified. In the example of FIG. 15B, tag A is smoothed as identified at timings t1 to t5 and t7. Tag B is smoothed as identified at timing t4, and from t6 to t9. Tag C is smoothed as identified at timings t10 and t11. The tag D is smoothed as identified at timings t13 to t17.

  The passage time estimation unit 64 is based on the idea that “the passage time of each wireless IC tag 3 is included in the period in which each wireless IC tag 3 indicated by the smoothed identification result is continuously identified”. The passage time of each wireless IC tag 3 is estimated, and the estimation result is output to the pattern matching unit 66. For example, from the smoothed identification result shown in FIG. 15B, the tag A passing time is included in the period from timing t1 to t5, and the tag B passing time is included in the period from timing t6 to t9. Is passed in the period from timing t10 to t11, and the passing time of tag D is estimated to be included in the period from timing t13 to t7. In the passage time estimation unit 64, the smoothed identification result is converted into an evaluation value by a distance conversion process, as in the passage time specifying unit 44 of FIG. 5, and the passage of each wireless IC tag 3 is performed based on the evaluation value. The time may be estimated in more detail.

  The radio wave intensity detector 65 detects the radio wave intensity of the received signal from the output of the reader / writer 13 supplied from the reader / writer controller 61 and outputs the detected signal intensity to the pattern matching unit 66. The pattern matching unit 66 refers to the passage time estimated for each wireless IC tag 3 input from the passage time estimation unit 64, and the time series of the radio wave intensity of the received signal input from the radio wave intensity detection unit 65. Pattern matching with the time-series change pattern of radio field intensity registered in the database (DB) 67 in advance, and the pasting direction and passage time of the wireless IC tag 3 communicated based on the matching result are specified And output to the associating unit 69.

  In the database 67, the time-series change pattern of the radio wave intensity of the received signal when the wireless IC tag 3 is passed in front of the antenna 11 at various constant speeds in various directions is affixed to the wireless IC tag 3. It is registered in advance in association with the direction and the passage time.

  For example, as shown in FIG. 9A, the communication area of the antenna 11 is set in a state where the surface of the wireless IC tag 3 and the surface of the antenna 11 are parallel (the sticking direction of the wireless IC tag 3 is defined as the X direction). If the radio wave intensity is detected as shown in FIG. B at that time, the change direction of the radio wave intensity shown in FIG. (For example, a preset passage time within the period of the change pattern of the radio wave intensity shown in FIG. 5B) is associated with each other and registered in the database 67.

  Further, for example, as shown in FIG. 10A, the surface of the wireless IC tag 3 and the surface of the antenna 11 are orthogonal to each other, and the perpendicular of the surface of the wireless IC tag 3 is parallel to the moving direction (the wireless IC tag 3 If the radio wave intensity is detected as shown in FIG. B at that time, the change in the radio wave intensity shown in FIG. The pattern is associated with the application direction (Y direction) of wireless IC tag 3 and the passage time (for example, the passage time set in advance during the period of the change pattern of the radio wave intensity shown in FIG. be registered.

  Further, for example, as shown in FIG. 11A, the surface of the wireless IC tag 3 and the surface of the antenna 11 are orthogonal to each other, and the perpendicular of the surface of the wireless IC tag 3 is orthogonal to the moving direction (the direction in which the wireless IC tag 3 is attached) Is defined as the Z direction), and when the radio wave intensity is detected as shown in FIG. B at that time, the change pattern of the radio wave intensity shown in FIG. The application direction (Z direction) of wireless IC tag 3 and the passage time (for example, the passage time preset within the period of the change pattern of the radio wave intensity shown in FIG. 5B) are associated with each other and registered in database 67. .

  Note that a change pattern of radio wave intensity corresponding to directions other than the X, Y, and Z directions shown in FIGS. 9 to 11 may be registered in the database 67 in advance. Further, in addition to the affixing direction of the affixed wireless IC tag 3, spatial features such as the height from the floor and the distance from the antenna 11 may be registered in association with each other.

  In the database 67, the time-series change pattern of the radio wave intensity of the received signal when the wireless IC tag 3 is passed in front of the antenna 11 at various kinds of directions in various directions is stored in the wireless IC tag 3. It may be simply registered in advance in association with the sticking direction and the passage time. In this case, the pattern matching unit 66 performs pattern matching after normalizing one of the change pattern of the actually detected radio wave intensity and the two change patterns registered in the database 67 in the time axis direction on the other side. To.

  The package estimation unit 68 estimates the size and interval of the package 16 on the conveyor 15 based on the detection signal input from the sensor 12 and outputs the estimation result to the association unit 69.

  The associating unit 69 associates the direction and passage time of each wireless IC tag 3 input from the pattern matching unit 66 with a single package 16 based on the estimation result input from the package estimation unit 68 in the subsequent stage. Output.

  Next, tag passage time specifying processing according to the second configuration example of the PC 14 shown in FIG. 14 will be described with reference to the flowchart of FIG. The tag passage time specifying process assumes a case where one wireless IC tag 3 exists in the communication boundary area of the antenna 11.

  In step S <b> 11, the reader / writer control unit 61 issues a read request to the reader / writer 13. In response to this, the reader / writer 13 causes the antenna 11 to start radiating electromagnetic waves. The wireless IC tag 3 existing in the communication area of the antenna 11 is supplied with electric power by this electromagnetic wave, and stores information using this electric power (information for identifying the wireless IC tag 3, package delivery destination) Etc.) are returned as electromagnetic waves. The antenna 11 receives this reply, and the reader / writer 13 converts the received result into a received signal at a predetermined time interval, and starts outputting it to the reader / writer control unit 61. Further, the radio wave intensity of the electromagnetic wave returned from the wireless IC tag 3 received by the antenna 11 starts to be output to the reader / writer control unit 61.

  The radio wave intensity detector 65 detects the radio wave intensity from the output of the reader / writer 13 supplied from the reader / writer controller 61 and starts outputting the detection result to the pattern matching unit 66. On the other hand, the baggage estimating unit 68 starts estimating the size and interval of the baggage 16 on the conveyor 15 based on the detection signal input from the sensor 12 and starts outputting the estimation result to the associating unit 69.

  In step S12, the tag identification unit 62 identifies the wireless IC tag 3 that has transmitted the received signal based on information included in the received signal input from the reader / writer 13, and the identification result (for example, shown in FIG. 15A). Are output to the correction unit 63.

  In step S13, the correction unit 63 smoothes the identification result continuously output from the tag identification unit 62 according to a predetermined rule based on the continuity of the same identification result, and the smoothed identification result (for example, FIG. 15B). Is output to the passage time estimation unit 64. In step S <b> 14, the passage time estimation unit 64 estimates the passage time of each wireless IC tag 3 based on the smoothed identification result input from the correction unit 63 and outputs it to the pattern matching unit 66. The smoothed identification result may be converted into an evaluation value by performing a distance conversion process, and the passing time of each wireless IC tag 3 may be estimated based on the evaluation value and output to the pattern matching unit 66. .

  In step S15, the pattern matching unit 66 is continuously input from the radio wave intensity detecting unit 65 with reference to the passing time estimated for each wireless IC tag 3 input from the passing time estimating unit 64. Pattern matching is performed between the time-series change pattern of the radio wave intensity of the received signal and the time-series change pattern of the radio wave intensity registered in the database 67 in advance. Then, among the time-series change patterns of the radio field intensity registered in the database 67 in advance, the pasting direction and the passage time associated with the radio field intensity change pattern that matches the output of the radio field intensity detection unit 65 are communicated. The wireless IC tag 3 that has been attached is specified as a sticking direction and a passage time, and is output to the correspondence unit 69.

  In step S16, the associating unit 69 correlates the pasting direction and passage time of each wireless IC tag 3 input from the pattern matching unit 66 based on the estimation result input from the package estimating unit 68, and The attached result is output to the subsequent stage.

  In step S <b> 17, the reader / writer 13 converts predetermined information (for example, information indicating that the wireless IC tag 3 has been successfully recognized) input from the reader / writer control unit 61 into an electromagnetic wave to convert the antenna 11. To output. Thereby, the predetermined information is recorded on the wireless IC tag 3.

  Note that the processes in steps S12 to S17 described above are intermittently performed in parallel with the input from the upper stage. This is the end of the description of the tag passage time specifying process according to the second configuration example of the PC 14.

  As described above, according to the present invention, the passing time of each wireless IC tag that passes through the communication area of the antenna can be grasped, so the arrangement order of the packages to which the wireless IC tags moved by the conveyor are attached Can be recognized correctly. In addition, according to the present invention, it is possible to grasp the sticking direction of the wireless IC tag. Therefore, for example, in the physical industry, the information on the passage time and the pasting direction of the wireless IC tag can be used to accurately sort the package with the wireless IC tag attached.

  In this specification, the steps executed based on the program are executed in parallel or individually even if they are not necessarily processed in time series, as well as processes executed in time series according to the described order. It also includes processing.

  The program may be processed by a single computer, or may be distributedly processed by a plurality of computers. Furthermore, the program may be transferred to a remote computer and executed.

  Further, in this specification, the system represents the entire apparatus constituted by a plurality of apparatuses.

It is a figure which shows the state in which a some wireless IC tag exists simultaneously in the communication area of an antenna. It is a figure which shows the structural example of the tag communication system to which this invention is applied. It is a figure which shows the detection signal output from the load on the conveyor and a sensor. It is a block diagram which shows the structural example of PC of FIG. It is a figure which shows the 1st structural example of the functional block implement | achieved by PC. It is a figure which shows the identification result by the tag recognition part of FIG. 5, the correction result by a correction | amendment part, and the conversion result by a passage time specific | specification part. FIG. 6B is a graph corresponding to the recognition result shown in FIG. 6A. It is a graph corresponding to the evaluation value shown in FIG. 6C. It is a figure for demonstrating the reception pattern registered into a database. It is a figure for demonstrating the reception pattern registered into a database. It is a figure for demonstrating the reception pattern registered into a database. It is a figure which shows the example of the pattern matching of a receiving result and a receiving pattern. It is a flowchart explaining the tag passage time specific process by the 1st structural example of the functional block shown by FIG. It is a figure which shows the 2nd structural example of the functional block implement | achieved by PC. It is a figure which shows the identification result by the tag recognition part of FIG. 14, and the correction result by a correction | amendment part. It is a flowchart explaining the tag passage time specific process by the 2nd structural example of the functional block shown by FIG.

Explanation of symbols

10 Tag Communication System 11 Antenna 12 Sensor 13 Reader / Writer 14 PC
15 Conveyor 16 Baggage 21 CPU
Reference Signs List 31 Recording medium 41 Reader / writer control unit 42 Tag identification unit 43 Correction unit 44 Passing time specifying unit 45 Radio wave intensity detection unit 46 Binarization unit 47 Binary pattern matching unit 48 Database 49 Luggage estimation unit 50 Corresponding unit 61 Reader / writer Writer control unit 62 Tag identification unit 63 Correction unit 64 Passing time estimation unit 65 Radio wave intensity detection unit 66 Pattern matching unit 67 Database 68 Luggage estimation unit 69 Confirmation unit

Claims (10)

A wireless IC tag to be moved, and a communication means for wirelessly communicating with the wireless IC tag including a recording medium on which information is recorded and an antenna for transmitting the information;
Identification means for identifying a wireless IC tag wirelessly communicating with the communication means based on an output of the communication means at a predetermined time interval and outputting an identification result;
Correction means for correcting the time-series identification results output from the identification means based on the continuity of the same identification results;
Specifying means for specifying the timing at which the wireless IC tag has passed a predetermined position based on the time-series identification result corrected by the correcting means; and
The information processing apparatus, wherein the specifying unit specifies a center of a period in which the same identification result is obtained as a timing at which the wireless IC tag passes a predetermined position. The information processing apparatus according to claim 1, wherein the correction unit performs at least one of a smoothing process and a distance conversion process on a time-series identification result. Detection means for detecting at least one of a size or an arrangement interval of an object to which the wireless IC tag is attached and continuously arranged and moved;
The information processing apparatus according to claim 1, further comprising: an association unit that associates the identification result of the identification unit with one object based on the detection result of the detection unit. A wireless IC tag to be moved, and a communication step for wirelessly communicating with the wireless IC tag including a recording medium on which information is recorded and an antenna for transmitting the information;
An identification step of identifying the wireless IC tag wirelessly communicated in the communication step processing at a predetermined time interval based on the output of the communication step processing and outputting an identification result;
A correction step of correcting the time-series identification results output in the processing of the identification step based on the continuity of the same identification results;
A specifying step of specifying the timing at which the wireless IC tag passes a predetermined position based on the time-series identification result corrected by the correction step;
The processing of the specifying step specifies the center of a period in which the same identification result is obtained as a timing when the wireless IC tag passes a predetermined position. A communication means that wirelessly communicates with a wireless IC tag that is attached to each of the objects that are continuously arranged and moved, and in which information about the object is recorded and an antenna that transmits the information;
Detecting means for detecting electromagnetic wave intensity from the wireless IC tag wirelessly communicating with the communication means based on an output of the communication means;
Binarization change pattern of the time series of the electromagnetic wave intensity detected when the wireless IC tag attached in a predetermined sticking direction on the object is moved together with the object, corresponding said sticking direction of the wireless IC tag A database registered with
Specifying means for specifying a sticking direction of the wireless IC tag wirelessly communicated with the communication means by pattern matching between the database and a time-series binary change pattern of electromagnetic wave intensity output from the detection means; An information processing apparatus characterized by that. Detecting means for detecting at least one of a size or an arrangement interval of the objects continuously arranged and moved;
The information processing apparatus according to claim 5, further comprising: an association unit that associates the identification result of the identification unit with one object based on the detection result of the detection unit. A communication step of wirelessly communicating with a wireless IC tag that is attached to each of the objects that are continuously arranged and moved, and in which information about the object is recorded and an antenna that transmits the information;
A detection step of detecting an electromagnetic wave intensity from the wireless IC tag wirelessly communicated in the processing of the communication step based on an output of the processing of the communication step;
The wireless IC tag application direction is associated with the time-series binarized change pattern of the electromagnetic wave intensity detected when the wireless IC tag attached to the object in a predetermined application direction is moved together with the object. Direction of the wireless IC tag wirelessly communicated in the process of the communication step by pattern matching between the registered database and the time-series binary change pattern of the electromagnetic wave intensity output from the process of the detection step An information processing method comprising: a specifying step for specifying. A communication means that wirelessly communicates with a wireless IC tag that is attached to each of the objects that are continuously arranged and moved, and in which information about the object is recorded and an antenna that transmits the information;
Identification means for identifying a wireless IC tag wirelessly communicating with the communication means based on an output of the communication means at a predetermined time interval and outputting an identification result;
Correction means for correcting the time-series identification results output from the identification means based on the continuity of the same identification results;
Estimating means for estimating a timing at which the wireless IC tag passes a predetermined position based on a time-series identification result corrected by the correcting means;
Detecting means for detecting electromagnetic wave intensity from the wireless IC tag wirelessly communicating with the communication means based on an output of the communication means;
A time-series change pattern of electromagnetic wave intensity detected when a wireless IC tag attached to the object in a predetermined application direction is moved together with the object , and the application direction of the wireless IC tag and the wireless IC A database in which a passage time representing a timing at which a tag passes a predetermined position by a relative timing in the period of the change pattern is associated and registered;
With reference to the timing when the wireless IC tag estimated by the estimating means passes a predetermined position, the database and the time-series change pattern of the electromagnetic wave intensity output from the detecting means are compared, and the comparison result An information processing apparatus comprising: a specifying unit that specifies a pasting direction of the wireless IC tag wirelessly communicated with the communication unit and a passing time when the wireless IC tag passes a predetermined position. Detecting means for detecting at least one of a size or an arrangement interval of the objects continuously arranged and moved;
The information processing apparatus according to claim 8, further comprising: an association unit that associates the identification result of the identification unit with one object based on the detection result of the detection unit. A communication step of wirelessly communicating with a wireless IC tag that is attached to each of the objects that are continuously arranged and moved, and in which information about the object is recorded and an antenna that transmits the information;
An identification step of identifying the wireless IC tag wirelessly communicated in the communication step processing at a predetermined time interval based on the output of the communication step processing and outputting an identification result;
A correction step of correcting the time-series identification results output in the processing of the identification step based on the continuity of the same identification results;
An estimation step for estimating a timing at which the wireless IC tag passes a predetermined position based on a time-series identification result corrected by the correction step;
A detection step of detecting an electromagnetic wave intensity from the wireless IC tag wirelessly communicated in the processing of the communication step based on an output of the processing of the communication step;
A time-series change pattern of electromagnetic wave intensity detected when a wireless IC tag attached to the object in a predetermined application direction is moved together with the object , and the application direction of the wireless IC tag and the wireless IC A time series of electromagnetic wave intensity output from the processing of the detection step and the database in which the passage time indicating the timing at which the tag passes a predetermined position is registered in association with the relative timing in the period of the change pattern The change pattern is compared with reference to the timing when the wireless IC tag estimated in the process of the estimation step passes a predetermined position, and based on the comparison result, the wireless communication is performed in the process of the communication step. specific step of sticking direction and the wireless IC tag of the wireless IC tag to identify the passage time which has passed through the predetermined position An information processing method which comprises and.

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