JP5221471B2 - IC tag data management method and IC tag data management program - Google Patents

Description

  The present invention relates to an IC tag data management method for writing / reading data to / from an IC tag having a writable memory area among IC tags used for article management and distribution.

  As an IC tag having a memory area and a method of using the IC tag, it is known to apply the IC tag to high-quality aircraft maintenance (for example, see Non-Patent Document 1). In this case, maintenance information can be input manually by a mechanic or the like from the computer that controls the IC tag writer via the IC tag writer or directly from the IC tag writer integrated with the computer. Is what you do.

  FIG. 6 is a schematic diagram of the case where the recording data is written to the IC tag, that is, is written, in the conventional IC tag data management method. For simplicity, the IC tag reader / writer 603 is a handy IC tag reader / writer integrated with a computer function. Of course, the same applies to a case where a series of operations are performed via the IC tag writer from a computer that controls the IC tag writer. The IC tag 602 is assumed to have a memory area. For the IC tag 602 attached to the article 601, the handy IC tag reader / writer 603 transmits a carrier wave 604 on which recording data is superimposed to the IC tag 602 by using a write function. The recording data is demodulated from the carrier wave 604 and stored in the memory area of the IC tag 602. At this time, power used for processing in the IC tag 602 is supplied by electromagnetic induction by the carrier wave 604 or the like.

  FIG. 7 is a schematic diagram of the case where the stored data stored in the IC tag is read, that is, read, in the IC tag data management method of the prior art. With respect to the IC tag 602 attached to the article 601, the IC tag reader / writer 603 transmits a carrier wave 604 to the IC tag 602 using a read function. The IC tag 602 sends back a carrier wave 605 on which storage data is superimposed. The IC tag reader / writer 603 demodulates the stored data from the carrier wave 605, and the user can check the stored data.

  FIG. 8 is a block diagram of a case where data is written to an IC tag in the conventional IC tag data management method. FIG. 8 is obtained by adding the determination of whether or not data can be overwritten to the description of FIG.

  FIG. 9 is a diagram for explaining the memory area of the IC tag 602. The IC tag 602 has 8 bytes per block, and 1 byte of data enters each byte. In the IC tag 602, the first block is assigned as a system area, and the rest is assigned as a user area. An IC manufacturer code, a serial number at the time of production, and the like are written in the system area, and the user cannot normally rewrite the system area. On the other hand, the user area is an area where the user can freely read and write data, that is, a read / write area. The writable area described with reference to FIGS. 6 and 8 is usually this user area. In the user area, data such as shipping date / time, shipping location, producer, etc. can be written in accordance with the user's needs in order to manage the article with the IC tag attached.

Fujitsu Limited Press Release (January 2008) http: // pr. fujitsu. com / jp / news / 2008/01/9. html, search July 23, 2009

  However, the user area is not intended to divide and store a plurality of pieces of homogeneous data. When there are a plurality of measurement data, since these are the same data, they cannot be stored in the user area of the IC tag, and the IC tag does not function as a data carrier for the measurement data. Similarly, the measurement data for each time is not stored in the user area of the IC tag, and the IC tag does not function as a logger for the measurement data.

  Consider specific aircraft maintenance information. For example, even if a bolt is tightened with a torque wrench, the conventional IC tag management method records a torque value only by leaving a record that the IC tag is normally tightened with an appropriate torque value. I can't do it.

  Although the user area of the IC tag has a small capacity of several kilobytes, the measurement data obtained by a sensor or measuring instrument such as a torque value has a relatively small amount of data even with date / time information, and the IC tag has a plurality of data. Can be stored. However, in the conventional IC tag data management method using IC tag software, the measurement data cannot be directly written into the IC tag, and the user area of the IC tag cannot be used effectively.

  Accordingly, the present invention provides an IC tag data management method and an IC tag data management program that can write a plurality of measurement data into the user area of the IC tag and cause the IC tag to function as a data carrier that holds the plurality of measurement data. The purpose is to provide.

  In order to achieve the above object, an IC tag data management method and an IC tag data management program according to the present invention divide an IC tag user area into a plurality of areas, and record data from measurement data from sensors and measuring instruments. The recorded data is allocated and written in the user area divided for each sensor or measuring instrument.

  Specifically, the IC tag data management method according to the present invention includes a division process of dividing the user area of the IC tag into a plurality of data fields, a data generation process of generating recording data to be written to the IC tag, A writing process for writing the recording data generated in the data generation process for each data field; and a reading process for reading the storage data in the data field.

  The IC tag data management method according to the present invention generates recording data from measurement data from a sensor or measuring instrument, and writes the recording data in a data field obtained by dividing the user area of the IC tag. For example, recorded data can be written in the data field for each sensor or measuring instrument. The IC tag data management method according to the present invention can read stored data in the user area. Here, the storage data is data including recording data in the user area and a value (NULL) of an empty data field.

  The IC tag data management method according to the present invention transfers measurement data from a sensor or measuring instrument to an IC tag via an IC tag reader / writer, and allows the IC tag to function as a data carrier that holds a plurality of measurement data. . Therefore, the present invention can provide a data management method for IC tag that allows a plurality of measurement data to be written in the user area of the IC tag and allows the IC tag to function as a data carrier that holds the plurality of measurement data.

  In the writing process of the IC tag data management method according to the present invention, date information can be added to the recording data. In the IC tag data management method according to the present invention, by adding date and time information to the recording data, the IC tag can function not only as a mere data carrier but also as a data logger.

  In the IC tag data management method according to the present invention, the attribute information describing the type of the recording data can be written in one of the data fields in the writing process. The IC tag data management method according to the present invention can write in what kind of sensor or measuring instrument the data logger functions as an IC tag. The system employing the IC tag data management method according to the present invention is used as a data carrier to determine what kind of sensor or measuring instrument the data logger functions by checking the attribute information. It can be judged whether it is a thing or unused.

  For example, if it is functioning as a data logger for a sensor or measuring instrument suitable for the purpose, or if it is not used, it is possible to use the IC tag according to the present invention by setting a condition that allows writing of new recording data. A system that employs the data management method can determine whether or not new recording data can be written. In addition, when functioning as a data logger for a sensor or measuring instrument, the present invention can be applied to the present invention by setting in advance a condition that allows the oldest data field to be overwritten even when the user area is full of recorded data. A system employing such an IC tag data management method can determine whether or not new recording data can be written. These settings may be set in a data field in which attribute information is written.

  The IC tag data management method according to the present invention performs the reading process before the writing process, confirms the attribute information in the read stored data, and newly writes the recording data. A writing permission / inhibition determining process for determining whether or not writing is possible is performed, and when writing is possible, the writing process can be performed.

  Since new recording data is written after determining whether or not there is a space in the user area, past recording data is not erased. On the other hand, when the user area is full, the oldest recording data may be erased and new recording data may be written. The system employing the IC tag data management method according to the present invention can effectively use the limited user area of the IC tag.

  In the IC tag data management method according to the present invention, the attribute information includes a field length and a start block of the data field.

  The system employing the IC tag data management method according to the present invention can write in the data field suitable for the sensor or measuring instrument to be used by comparing the data length of the recorded data with the field length of the data field. It is possible to make efficient use of the user area possible.

  Also, when the sensor or measuring instrument changes, the data length of the recorded data may change. The IC tag data management method according to the present invention can cope with many sensors and measuring devices by checking the data length of the recorded data and changing the field length, and can effectively use the user area of the IC tag. .

  The IC tag data management method according to the present invention extracts the field length and the start block of the data field from the attribute information in the storage data read in the reading process, and after the reading process, A data restoration process for restoring the recording data from the read storage data is further performed based on the extracted field length and the start block.

  The system adopting the IC tag data management method according to the present invention reads the storage data held in the IC tag and uses the field length and start block information included in the attribute information to store the original recording data. It can be restored and presented in a user-friendly format.

  The IC tag data management program according to the present invention causes a computer to execute the IC tag data management method. By executing this program on a computer, the IC tag data management method according to the present invention can be executed.

  The present invention provides an IC tag data management method and an IC tag data management program that can write a plurality of measurement data in the user area of the IC tag and cause the IC tag to function as a data carrier that holds the plurality of measurement data. can do.

It is a figure explaining the data format of the IC tag used with the data management method for IC tags which concerns on this invention. It is a block diagram explaining the data management method for IC tags which concerns on this invention. It is a figure explaining the data format of the IC tag used with the data management method for IC tags which concerns on this invention. It is a block diagram explaining the data management method for IC tags which concerns on this invention. It is a figure explaining the read-out process in the data management method for IC tags concerning the present invention. It is a figure explaining the case where data is written in an IC tag by the conventional IC tag data management method. It is a figure explaining the case where data are read to an IC tag by the conventional data management method for IC tags. It is a block diagram explaining the conventional data management method for IC tags. It is a figure explaining the data format of the IC tag used with the data management method for conventional IC tags. It is the figure which showed the example of the computer for performing the data management program for IC tags concerning this invention.

  Embodiments of the present invention will be described with reference to the accompanying drawings. The embodiments described below are examples of the present invention, and the present invention is not limited to the following embodiments. In the present specification and drawings, the same reference numerals denote the same components.

(First embodiment)
FIG. 1 is a diagram for explaining a memory area of an IC tag in the IC tag data management method of the present embodiment. The IC tag data management method according to the present embodiment includes a division process for dividing the user area of the IC tag into a plurality of data fields, a data generation process for generating recording data to be written to the IC tag, and a data generation process. A write process for writing the recorded data for each data field, and a read process for reading the stored data in the data field. Further, date information is added to the recording data in the writing process.

  For example, a system employing this IC tag data management method checks an IC tag using an IC tag reader / writer to confirm whether or not the user area is divided. When the IC tag user area is not divided, the system performs the division process of the IC tag data management method. FIG. 1 is a diagram when the system divides a user area into a plurality of fields and sets a data field corresponding to 2 blocks, that is, 16 bytes as a field length. In the conventional IC tag of FIG. 8, the entire user area is one data field, but in the IC tag of this embodiment, the user area is divided into a plurality of data fields.

  Subsequently, the system performs a data generation process of the IC tag data management method. Specifically, this system converts measurement data from sensors and measuring instruments into IC tag recording data. Here, date and time information such as measurement time may be included in the recorded data. The recording data is generated in a size that can be stored in one data field.

  Further, the system performs a writing process of the IC tag data management method. Specifically, this system writes recording data in each data field using an IC tag reader / writer. For example, if an IC tag reader / writer is provided in a sensor or measuring instrument, when an article with an IC tag is measured, the measurement data can be converted into recording data and automatically written in the IC tag. . By doing in this way, this system can write the measurement data of a sensor or a measuring instrument in the user area of an IC tag without going through manual input.

  On the other hand, this system can read the stored data stored in the data field by the IC tag in the reading process. For example, this system can obtain record data by reading all stored data in the data field with an IC tag reader / writer and deleting empty data. Furthermore, this system can extract measurement data and date / time information from the recorded data.

  For example, if the number of blocks in the user area is 16, eight data fields can be provided. That is, since eight recording data and date / time information can be stored in the IC tag, the present system can function the IC tag as a logger for eight recording data. If the date / time information is not included, the system can use the IC tag as a data carrier to which date / time information is not added.

  The system performs a reading process before the writing process to confirm the stored data that has been read. This system confirms the availability of the data field and the date / time information of the recording data in the current data field from the stored data, and determines whether or not new recording data can be written.

  FIG. 2 is a block diagram of an IC tag data management method for realizing a data carrier or logger function of measurement data using an IC tag in which a user area is divided as shown in FIG. This system needs to erase some data fields when the user area is filled with recording data or the like. FIG. 2 is a block diagram for determining whether or not new recording data can be written at that time.

  This system first reads the current storage data in the user area of the IC tag, and deletes the oldest recorded data from the date / time information. Specifically, data stored in the user area of the IC tag is read (step S201), and it is determined whether there is a new IC tag (step S202). For example, a new IC tag can be determined when recognizing that the user area is not divided into data fields. If it is determined to be a new ID tag, it is determined whether or not new recording data is to be written (step S207). If new recording data is not written, the processing is stopped (step S208). On the other hand, when new recording data is written, the dividing process is performed, and the recording data is written in a predetermined data field (step S206).

  If it is determined in step S202 that it is not a new IC tag, it is determined whether there is an empty data field (step S203). For example, when it is recognized that a data field is filled with a NULL value, it can be determined that the data field is empty. Even if the data field is not filled with a NULL value, it may be determined that an empty data field exists if NULL exists with a certain length and exceeds the data length of the recording data.

  If an empty data field is found in step S203, the recording data is written in the data field. For example, when there are a plurality of empty data fields, writing can be performed from the side closer to the system area. On the other hand, if there is no empty data field in step S203, it is determined whether or not overwriting is possible (step S204). For example, in the case of recording data with date / time information, overwriting is possible. Further, the user may be inquired about whether or not overwriting is possible.

  If overwriting is possible in step S204, the recording data in the data field is erased (step S205), and new recording data is written (step S206). On the other hand, if overwriting is not possible in step S204, writing is stopped (step S208).

  By operating in this way, this system can always hold the latest measurement data using the IC tag as a logger for measurement data. Further, the IC tag data management program represented by the block diagram as shown in FIG. 2 can be realized by a programming language such as C language or Visual Basic, which is often used in software development of an IC tag reader / writer.

(Second Embodiment)
FIG. 3 is a diagram for explaining a memory area of an IC tag in the IC tag data management method of the present embodiment. In the IC tag data management method of this embodiment, the attribute information describing the type of the recording data is written in one of the data fields in the writing process.

  When the user area is divided in the division process, the system secures an area for writing attribute information such as the type of recording data, the start block of the data field, and the length value of the data field in the first block 0. ing. Here, the type of recording data is determined from information of sensors and measuring instruments. Thereafter, a plurality of data fields corresponding to two blocks are set starting from block 1 which is the start block of the data field.

  This system writes measurement data and the like within a range that can be stored in one data field. In addition, the system writes attribute information in block 0. For example, when an IC tag is read in the reading process, the user can know what kind of sensor or measuring instrument data logger the IC tag functions.

  Further, the present system writes the value of the length of the data field (field length) in block 0, so that the user area is divided without giving a prescribed value for division in the division process, You can see if a data field is formed. For example, this system can re-divide the user area when the data length of the recording data changes. This system can handle sensors and measuring instruments with different data lengths of recorded data, and can effectively use the user area.

  FIG. 4 is a block diagram of an IC tag data management method for realizing a data carrier or logger function of measurement data using an IC tag in which a user area is divided as shown in FIG. It is assumed that an IC tag reader / writer that reads and writes an IC tag has recording data and attribute information to be written in the data field at the first time point. Here, only a different part from FIG. 2 is demonstrated.

  The system performs the reading process before the writing process, confirms the attribute information in the read stored data, and determines whether or not the recording data can be newly written. A determination process is performed, and the writing process is performed when writing is possible. Specifically, when it is determined in step S207 that data is newly written to the new IC tag, the attribute information is written in block 0 (step S302), and then step S206 is performed. If it is determined in step S202 that the IC tag is not a new IC tag, it is determined whether the IC tag matches the purpose based on the read attribute information (step S301). If the IC tag matches the purpose, step S203 is performed. If the IC tag does not match the purpose, step S208 is performed.

  Here, “matches purpose” indicates the following case. For example, when there is an article for which measurement data of a specific sensor or measuring instrument is required to be written in an IC tag, the system detects the article when the article is measured by the sensor or measuring instrument. It is determined that the IC tag attached to is suitable for the purpose.

  The IC tag data management program represented by the block diagram as shown in FIG. 4 can be realized by the programming language described in the first embodiment.

(Third embodiment)
The IC tag data management method of this embodiment is characterized in that the attribute information includes a field length and a start block of the data field. Further, the field length and the start block of the data field are extracted from the attribute information in the storage data read in the read process, and the field length and the start block extracted after the read process Further, a data restoration process for restoring the recording data from the read storage data is further performed.

  FIG. 5 is a diagram for explaining a reading process in the IC tag data management method of this embodiment. As for the IC tag of this embodiment, the user area | region is divided | segmented like FIG. This system reads the storage data held in the IC tag (step S501), finds attribute information from the storage data (step S503), and uses the starting block of the data field and the field length of the data field to Measurement data is restored (step S504) and presented in a format that is easy for the user to see (step S505).

  This system can know the block allocation from the start block of the data field and the field length of the data field in the attribute information. For this reason, this system can separate storage data into attribute information and recording data (step S502). Thereafter, the system extracts date / time information from the recorded data (step S506). Further, the present system determines from the attribute information what kind of sensor or measuring instrument the measurement data written as the recorded data is measured, and presents this in the header of the data sheet (step S505). . The system presents the date and time information and the measurement data in combination below (step S505). At this time, if the system has a function of arranging the measurement data in the order of the date information, the measurement data can be presented in the order of the date information. In this way, the present system can restore the original measurement data from the stored data held in the IC tag and present it in a format that is easy for the user to see.

(Example of IC tag data management program)
The IC tag data management method of the first to third embodiments can be realized by a computer executing a program of an IC tag data management method (IC tag data management program). The IC tag data management program is provided by being stored in a recording medium, for example. Examples of the recording medium include a recording medium such as a flexible disk, a CD-ROM, and a DVD, a semiconductor memory, and the like. The IC tag data management program may be provided via a LAN (Local Area Network) or the Internet.

  FIG. 10 is a diagram illustrating an example of a computer 300 for executing a program recorded in the recording medium 90. The computer 300 includes a recording medium reading device 111 that reads a recording medium 90 such as a flexible disk, a CD-ROM, and a DVD, a working memory (RAM) 112, a memory 113 that stores a program recorded on the recording medium 90, A display 114, a mouse 115 and a keyboard 116 as input devices, a CPU 117 that controls execution of a program, a hard disk 118 that stores data, and a cable 119 that is connected to the measuring device 620 and the IC tag reader / writer 603 are provided. Yes. As a form of the cable 119, there is a USB cable, an RS232C cable, or a wired LAN cable. In this case, it may be connected via a LAN or the Internet. As another connection form, a wireless connection such as wireless LAN or Bluetooth (registered trademark) may be used. In FIG. 10, the working memory 112, the memory 113, the CPU 117, and the hard disk 118 are indicated by broken lines because they are built in the housing.

  In the computer 300, when the recording medium 90 is inserted into the recording medium reader 111, the IC tag data management program stored in the recording medium 90 is installed in the memory 113 from the recording medium reader 111. After the installation to the memory 113 is completed, the CPU 117 can access the IC tag data management program, and the computer 300 can operate as a system for executing the IC tag data management method of the present embodiment. become.

  When the computer 300 operates as a system for performing the IC tag data management method, the computer 300 is connected to the measuring device 620 provided with the IC tag reader / writer and the IC tag reader / writer 603, and the CPU 117 performs the IC tag data management program. Accordingly, the data from the measuring device 620 is read, and a division process, a data generation process, a writing process, and a reading process are performed. In addition, the CPU 117 performs a write permission determination process and a data restoration process based on a signal from the IC tag reader / writer 603. Further, the CPU 117 can display the data restored in the data restoration process on the display 114 as described with reference to FIG.

  The computer 300 here is not limited to a personal computer as shown in FIG. 10, but includes a DVD player, a game machine, a mobile phone, and the like that include a recording medium reader 111 and a CPU 117 and perform processing and control by software.

  Further, the IC tag reader / writer 603 may include a CPU, ROM, and RAM, and the CPU may execute an IC tag data management program recorded in the ROM or RAM. In this case, each IC tag reader / writer 603 and measuring device 620 are directly connected by the cable 119, and each IC tag reader / writer 603 itself implements the IC tag data management method. When the computer 300 performs data aggregation or the like, a cable used for data transmission / reception with the IC tag reader / writer 603 can be separately provided.

90: Recording medium 111: Recording medium reader 112: Work memory 113: Memory 114: Display 115: Mouse 116: Keyboard 117: CPU
118: hard disk 119: cable 300: computer 601: article 602: IC tag 603: IC tag reader / writer 604: carrier wave 605: carrier wave 620 on which data signal is superimposed: measuring instrument

Claims (6)

A division process for dividing the user area of the IC tag into a plurality of data fields;
A data generation process for generating recording data to be written to the IC tag;
A writing process for writing the recording data generated in the data generation process for each data field;
A reading process of reading stored data in the data field;
I have a,
In the writing process, the attribute information describing the type of the recording data is written in one of the data fields.
An IC tag data management method characterized by the above.   2. The IC tag data management method according to claim 1, wherein date information is added to the recording data in the writing process. Before the writing process, performing the reading process, confirming the attribute information in the read stored data, and determining whether the recording data can be newly written, 3. The IC tag data management method according to claim 1, wherein the writing process is performed when writing is possible. Wherein the attribute information, IC tag data management method according to any one of claims 1 to 3, characterized in that it contains a field length and starting block of the data field. The field length and the start block of the data field are extracted from the attribute information in the storage data read in the reading process,
After the reading process, on the basis of the field length and the start block retrieved, wherein from the storage data read out in claim 4, characterized by further performing data restoration process for restoring the recording data IC tag data management method. IC tag data management program for executing the data management method of an IC tag according to the computer in any one of claims 1 to 5.

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