JP2007317042A - Storage medium, tag set of electronic tag and sensor tag, and status information management system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To make it possible to detect, edit and store data sufficient for management of an object, while reducing the amount of data. <P>SOLUTION: An electronic tag 308 includes an antenna 306, a memory 304 where data can be stored, and a communication IC 305 for the electronic tag, which transmits data in the memory to an external device via the antenna. A sensor tag 307 includes a sensor 301, an information reading/writing IC 302 for writing status information detected by the sensor 301 into the electronic tag 308, and a clock for outputting time information 303. The information reading/writing IC 302 monitors the changes in the status information in accordance with the time information 303 and writes a code, indicating tendency of the changes in the status information for each prescribed time and a parameter, indicating the amount or degree of changes of status information for each prescribed time into the memory 304 as status information. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a storage medium (for example, a tag set) for collecting the state of an object, the state around the object, and the state of a person, and a management system for managing the state information. The present invention relates to a management system for managing production management information such as a state in the production process of each product and a storage medium (for example, tag set) used in the production system for producing a product by performing processing operations.

  In order to collect and accumulate information such as product dynamics and state history of objects such as products and parts in a production management system, obtain dynamic information and state information individually associated with objects at various positions or processes in the production process. It needs to be possible. Therefore, it is necessary that identification information of each object can be acquired and that state information acquisition means such as a sensor exists.

  With regard to the ID tag with sensor, a sensor unit having a temperature sensor is provided in the ID tag, and the CPU of this sensor unit writes the temperature measured by the temperature sensor every predetermined time to the EEPROM, and the temperature data written to the EEPROM is externally There is known a technique of reading with a reader / writer (see Patent Documents 1 to 4).

  Trace data generated via the trace data generation mechanism is collected by the trace data collection means and temporarily stored by the storage means, and the timing for canceling the abnormal state at that time is assumed to hold necessary data before and after the abnormality. A technique is known in which abnormal trace data and data before and after that are extracted and stored in an abnormal trace data collection file using a timer and a counter, which are means for obtaining (see Patent Document 5).

Japanese Patent Laid-Open No. 2001-187611 JP 2004-217426 A JP-A-2005-280909 JP 2005-265302 A JP-A-5-73366

  Since the EEPROM of the ID tag with sensor is small, it is difficult to store all the temperature data. On the other hand, only the data before and after the time of abnormality as the data to be stored may be insufficient to manage the object with the sensor-attached ID tag.

  Therefore, an object of the present invention is to provide a storage medium that detects, edits, and stores data sufficient for object management, a tag set, and a management system that manages the data while reducing the amount of data.

  Another object of the present invention is to provide a storage medium and a tag set that can dynamically change a detection operation, an editing operation, and a storage operation in a recording medium that is detected, edited, and stored in a stand-alone manner.

  Both an electronic tag capable of writing information and a sensor tag equipped with a means capable of reading and writing information directly connected to a storage area of the electronic tag are attached to an object that circulates in a location to be managed. Alternatively, a sensor tag including a writing device for an electronic tag is attached to an object together with the electronic tag.

  In the process of distributing an object, the sensor tag acquires state information about the object or the surrounding area by using a sensor of the sensor tag, and writes and stores the information in the storage area of the electronic tag directly or via an electronic tag writing device. .

  At this time, it is preferable that the acquisition and accumulation of the state information is performed only by the sensor tag and the electronic tag, and an external device such as a sensor installed in the facility environment is not used.

  At this time, the information written in the electronic tag is not a time series set of the state information and time combination at each time when the state information is collected by the sensor tag, but a code indicating the tendency of the state change and the state It is preferable that the state information is expressed by a combination of a parameter representing the amount of change and the degree (ratio) of time and a time range in which the change tendency appears.

  Further, it is preferable that an operation setting for controlling the operation of the sensor tag is held on an electronic tag attached to the sensor tag, and the sensor tag reads the operation setting from the electronic tag as necessary and operates based on this. The sensor tag operation settings include detection operation parameters such as sensor detection intervals, codes indicating the tendency of state change, parameters indicating the amount and degree (ratio) of state change, and definition files for the time range. preferable.

  In addition, if direct exchange of information between the electronic tag and the sensor tag is not possible, the relationship between the individual identification information of the electronic tag and the individual identification information of the sensor tag is managed, and after receiving information from the sensor tag on the environment side The sensor information may be accumulated in a virtual storage area of a corresponding electronic tag existing on the environment-side server or terminal using the above-described association of the individual identification information.

  According to the present invention, it is possible to detect, edit, and store data sufficient for object management while reducing the amount of data. In other words, according to the present invention, it is not necessary to install a sensor in the facility environment, and it is possible to collect and store the state information of the article in real time regardless of the communication state between the facilities or between the tag and the facility. Become. In addition, since the sensor tag can be easily attached to and detached from the article, it is possible to perform operations such as collecting the state information by attaching the sensor tag only in an arbitrary process or place. At this time, it is possible to reduce the information amount of the state information history accumulated in the electronic tag, and to make this information amount independent of the frequency of collecting state information. Further, even if there is no information receiving device that communicates with the sensor tag on the facility environment side, it is possible to receive the state information as long as there is an information receiving device from the electronic tag.

  According to the present invention, the detection operation, editing operation, and storage operation can be dynamically changed in a recording medium that is detected, edited, and stored in a stand-alone manner. That is, a device that directly communicates with the sensor tag to change the operation setting of the sensor tag is not necessary, and the operation setting of the sensor tag can be changed by a device that reads and writes the electronic tag. Even if the sensor tag attached together with the electronic tag is changed, the sensor tag can be operated with the same operation setting without performing any operation on the sensor tag.

  An embodiment of the present invention will be described by taking a production management system as an example. However, the present invention is not limited to the production management system.

  FIG. 1 shows a configuration example of an apparatus according to the present invention.

  Articles (workpieces, etc.) 101 circulated in the factory have an electronic tag 102 having a unique identification ID and capable of writing individual information of the article, and an information writing device 103 for the electronic tag. A sensor tag 104 capable of operating completely independently and wirelessly is attached. However, when the sensor tag 104 can be operated by an external radio wave, a power source, or the like, a battery or the like is not essential.

  The sensor tag 104 acquires state information at a set frequency while the article 101 is distributed, and writes and stores the acquired state information in the electronic tag 102 as needed.

  When the article 101 comes to the place where the electronic tag reader 105 is installed, the status information and identification ID stored in the electronic tag 102 by the application program operating on the terminal 106 to which the reader is connected are wireless. The data is read by communication or direct contact, and is stored in the terminal 106 as state history information together with the information of the read location and time, or transmitted to the data server 107 or other terminal 108 via the network and stored. .

  In addition, the data server 107 performs information analysis processing such as determining whether or not there is an abnormality from the state information, and performs predetermined processing such as warning when it is determined that there is an abnormality. .

  The terminal 106 preferably includes a CPU (processing device), a storage device (memory, HDD, etc.) having a storage area, a display device, a network interface (communication device), and an input device. The data server 107 preferably includes a CPU (processing device), a storage device (such as an HDD) that stores a database, and a communication device that communicates with a network.

  A first embodiment of the present invention will be described by taking a production management system in a production system for producing products as an example.

  FIG. 2 is a configuration example of a system in the first embodiment of the present invention.

  Each article 201 to be managed that circulates in the production factory is provided with an electronic tag 202 that includes identification information and an information writing area 204. In addition, the article 201 is attached with a sensor 206 that obtains state information and a sensor tag 203 that includes an information writing device 205 for an electronic tag. The electronic tag 308 and the sensor tag 307 may be integrally formed.

  The sensor 206 may be incorporated in the sensor tag 203 or may be externally attached. The sensor tag 203 has operation setting information 213 regarding the acquisition frequency of the state information, and operates based on the operation setting information 213. The operation setting information 213 may be held in the storage area of the sensor tag 203. The sensor tag 203 has a memory and a register to hold the operation setting information 213. Alternatively, it may be held in the storage area 204 of the electronic tag 202, and the sensor tag 203 may read it appropriately using the writing device 205 that also serves as the electronic tag reading device. In the latter case, a device that directly communicates with the sensor tag 203 is not necessary for setting the operation of the sensor tag 203, and the operation setting information 213 of the sensor tag 203 can be changed by a writing device for the electronic tag 202.

  An example of an information table held as the operation setting information 213 is shown in FIG. The operation setting information 213 includes an information acquisition frequency 701 by the sensor, a conversion formula 702 from the sensor value acquired as a normal voltage value to an actual value, an error correction value 703 of each sensor, and the last update date and time 704 of the setting information. Consists of. However, the operation setting is not limited to FIG. Whether the sensor tag 203 can be operated, an operation time, an operation start time, and the like can also be set.

  The flow of updating the operation setting information 213 of the sensor tag 203 is shown in FIG.

  When the setting information needs to be changed, the facility terminal 208 generates an update date and time and an updated setting value (process 501), and waits for the electronic tag 202 to come into the communicable area (process 502). When the facility terminal 208 comes to the communicable area, it checks whether it has already been updated from the update date and time of the operation setting information 213 currently on the center tag 203 (process 503). Is overwritten and updated (process 504). For example, the sensor tag 203 may be attached to the article 201 or operated only in an area where accumulation of state information is required in the distribution process.

  The sensor tag 203 and the electronic tag 202 do not necessarily correspond one-to-one, and the sensor tag 203 may be freely attached or detached depending on the situation, or a different sensor tag 203 may be attached each time. At this time, if the operation setting information 213 of the sensor tag 203 is held on the electronic tag 202, even if a different sensor tag 203 is attached, the operation can be performed with a common operation setting. This makes it possible to continue collecting state information without performing any particular setting on the sensor tag 203 to be replaced even when the sensor tag 203 is replaced due to a battery exhaustion or failure.

  Further, in the above, the state information acquired by the sensor 206 of the sensor tag 203 may be directly stored in the memory 304 of the electronic tag 202. A system configuration example of the electronic tag 308 and the center tag 307 at this time is shown in FIG.

  The sensor tag 307 includes a sensor 301, a clock that outputs time information 303, and an information read / write IC that writes information to the electronic tag 308. The electronic tag 308 includes a memory 304 that can store individual identification information, state information, and operation setting information of the center tag 207, an electronic tag communication IC 305, and an antenna 306.

  The sensor tag 307 and the electronic tag 308 share the memory 304, and the status information acquired by the sensor 301 is stored as a status information history on the memory 304 together with the time information 303. Information on the memory 304 can be read by the read / write device 107 via the electronic tag communication IC 305 and the antenna 306.

  FIG. 4 shows the flow of processing by the sensor tag.

  In the process in which the article 201 is distributed in the production factory, the sensor tag 203 acquires state information (process 402) based on the operation setting information 213 stored in the memory of the electronic tag 308 or the center tag 203 (process 402). The acquired state information is written and accumulated in the storage area 204 of the electronic tag 202 as needed (process 404). The information stored at this time is a set of state information and time information 211 at the time of information acquisition (process 403). As a result, the pair of state information and time is stored in the electronic tag 202 in time series as a state information history. Will be accumulated. The state information includes, for example, the temperature and vibration of the article 201, the temperature around the article 201, and the like.

  An example of information stored at this time is shown in FIG. For example, the accumulated information is composed of a set of a status information value 602 and a date 601 when the information is acquired. A plurality of pieces of this information may be provided depending on the type of sensor.

  As described above, the history of the state information corresponding to the article 201 is accumulated in the electronic tag 202. These processes are performed only between the electronic tag 202 and the sensor tag 203 attached on the same article, and do not depend on the equipment in the factory or the network environment.

  When the article 201 approaches the equipment terminal 208 equipped with the electronic tag read / write device 207, the state information and the individual identification information stored in the electronic tag 202 by the equipment terminal 208 operate on the equipment terminal 208. Is read by the application program 214. The individual identification information in the electronic tag 202 is identification information of the electronic tag 202 and identification information of the article 201. Here, the terminal for reading the information of the electronic tag 202 may be a portable type or a wireless type.

  The equipment terminal 208 associates the read state information with the individual identification information and the read equipment identification information 212, location identification information 216, and time information 215, and is sent to the data server 209 via the network 210, where Accumulated. Alternatively, it is accumulated on the equipment terminal 208. Here, the information stored outside the electronic tag 202 is used as necessary from other applications via the network 210.

  Further, when it is necessary to control the sensor tag from the environmental equipment side in the control or the like, the operation setting held on the electronic tag 202 is operated, and thereby the operation of the sensor tag 203 is controlled.

  As described above, the history of the state information of the article is accumulated in a form that can be referred to online.

  In the above system, a device for receiving information of the sensor tag 203 is not particularly required, and only a device that reads and writes the electronic tag 202 is required for the facility. Therefore, if the electronic tag 202 has already been introduced, it is possible to introduce the system without particularly requiring facility expansion.

  In the second embodiment of the present invention, a corresponding example when the information storage capacity of an electronic tag to be used is limited will be described.

  The system configuration in the second embodiment of the present invention is the same as that in the first embodiment. As in the first embodiment, the electronic tag 202 and the sensor tag 203 are attached together to the article 201, and the sensor tag 203 acquires state information as needed and writes the acquired state information to the electronic tag 202.

  At this time, the electronic tag 202 does not list the set of state information and the time at which it was acquired in chronological order, but a code indicating a change pattern of the state information and a parameter indicating the amount or degree of change. Is converted into a state information variation code represented by The fluctuation pattern of the state information means a tendency of time change of values such as steady (almost no change), rise and fall, and the amount of change or the fluctuation degree is a rise in value per unit time or predetermined time. It means the magnitude of time-varying values such as quantity and descending quantity. The state information variation code may be one of a code indicating the variation pattern of the state information and a parameter indicating the variation amount or the variation degree.

  Specifically, for example, in a steady state (for example, code “M”) where the value of state information obtained discretely repeats up and down movement within a minute range from a certain start time A to a certain end time B If the center value is 20 and the fluctuation range is 1, a state information fluctuation code (for example, a description such as “M (20, 1, A, B)”) representing them is displayed on the electronic tag 202. It describes (refer FIG.9 (b)). The relationship between the state information variation pattern, the variation amount, and the state information variation code is preferably stored in the memory 304 as a sensor operation setting and can be dynamically rewritten.

  FIG. 8 shows an example of the flow of processing in this embodiment.

  When the sensor tag 203 newly acquires state information (step 301), first the state information variation code up to immediately before is read from the electronic tag 202 (step 302), and the new state information matches the state information variation trend. It is determined whether or not it is to be performed (step 303). If there is a match, that is, if there is no change with respect to the state information fluctuation tendency until immediately before, only the end time is corrected to that at that time and overwritten (step 304). If they do not match, a new state information variation code is generated (step 305) and written to the electronic tag 202 (step 306). As described above, the amount of information written to the electronic tag 202 can be greatly reduced as compared with the case where all the state information and time are listed.

  FIG. 9 shows an example of a specific difference in information amount. The state information history (FIG. 9 (a)) accumulated as a combination of the time 901 and the information value 902 at that time is the state information change code 903 and its start time (at the same time, the end time of the previous state change tendency). ) Is represented by a set of 904 (FIG. 9B).

  Further, according to this method, the amount of information stored in the electronic tag does not depend on the acquisition frequency of the state information. That is, even when the state information is collected every second or when the state information is collected every hour, the amount of information is the same if the variation tendency of the value of the state information is constant. However, if the acquisition frequency of the state information is increased, the state observation time increases, so that the possibility that an abnormal change in the state information value can be detected increases. As a result, the amount of information can also increase by this method.

  The information stored in the electronic tag 202 by this method is also acquired by the application program on the equipment terminal 208 when the article approaches the equipment-side electronic tag reader as in the case of the first embodiment. Accumulated on 208 or data server 209. At this time, if the state information variation code is accumulated, the variation tendency and variation amount can be used as attribute information when referring to, searching, and using the accumulated information.

  Also, from the state information variation code, the state information value at an arbitrary time between the start time and the end time is approximately calculated, and the value is used as information such as the identification ID of the article, time, place, equipment, etc. It can also be stored on the terminal or in the data server 209.

  In addition, when the state information stored in the electronic tag 202 is read and stored on the equipment terminal 208 or the data server 209, the state information stored on the electronic tag 202 is deleted and a new state is created. The amount of information stored in the electronic tag 202 may be reduced by starting the storage of information.

  In the third embodiment of the present invention, an example in which collected state information is used for abnormality detection will be described.

  When the article approaches the reading device of the electronic tag 202, and the application program on the equipment terminal 208 reads the information stored in the electronic tag 202, the application program reads from the state information history or state information variation code described, Interpret the fluctuation tendency and fluctuation amount of state information. From these fluctuation trends and fluctuation amounts, the application program determines an abnormal state based on individual definitions, and performs predetermined processing such as issuing a warning when an abnormality occurs.

  This abnormality determination is performed by referring to the status information on the equipment terminal 208 or the data server 209 by an external application program after the information stored in the electronic tag is copied to the equipment terminal 208 or the data server 209. May be. In any case, it is not necessary for the sensor tag 202 or the electronic tag 203 to have an abnormality detection logic, a threshold value for performing abnormality determination, or the like, and abnormality determination is performed only by an application program.

  Further, the abnormality determination may be performed at the time of obtaining the state information in the sensor tag 203. In that case, an abnormal condition determination criterion (for example, a threshold) is registered in the sensor tag 203 in advance, and when the state information determined to be abnormal based on the criterion is acquired, a code indicating the abnormality is added to the state information. Then, it is stored in the electronic tag 202, and when it is read from the electronic tag 202 by the equipment terminal 208, the application refers to the abnormal code and performs a predetermined process.

  In the fourth embodiment of the present invention, an example in which the state information collection frequency by the sensor tag is dynamically changed will be described.

  As in the first embodiment, the electronic tag 202 and the sensor tag 203 are attached to the article together, and the sensor tag 203 acquires the state information as needed and writes the acquired state information to the electronic tag 202.

  The frequency (time interval) at which the sensor tag 203 acquires the state information is set in the sensor tag 203 or the electronic tag 202 as the operation setting information of the sensor tag 203, and this is dynamically changed by the sensor tag 203 itself.

  Specifically, as in the case of the abnormal state determination criterion in the third embodiment, the sensor tag 203 or the electronic tag 202 has a determination criterion for changing the acquisition frequency of the state information as operation setting information. Operations such as increasing the acquisition frequency of the state information when the fluctuation of the information value becomes severe and decreasing the acquisition frequency of the state information when the fluctuation decreases are performed on the operation setting.

  Thereby, it becomes possible to collect state information adaptively.

  In the fifth embodiment of the present invention, a case where the sensor tag 1007 communicates with a terminal on the facility side by communication via a sensor network or the like, and there is no direct exchange of information between the sensor tag 1007 and the electronic tag 1003 is described. To do.

  FIG. 10 is a configuration example of a system in the fifth embodiment of the present invention. Further, FIG. 11 shows a flow of processing on the equipment terminal 1012 at this time.

  On the terminal 1012 or the server 1013, there is a virtual electronic tag memory space 1010 corresponding to the unique identification information 1008 of the electronic tag 1003.

  The state information obtained by the sensor tag 1002 is first stored in the storage area 1007 of the sensor tag itself, and in a place where communication via a sensor network or the like is possible, the communication is transmitted to the receiving device 1015 on the equipment side by this communication, and the receiving device The data is accumulated in the terminal 1012 or the server 1013 above or via the network (process 1102). An example of information stored in the sensor tag at this time is shown in FIG. The information is composed of a set of an acquisition date 1201 and a value 1202.

  At this time, the individual identification information described in the storage area 1005 of the sensor tag 1002 is attached to the state information and transmitted, and the individual identification information of the sensor tag 1002 and the individual identification information described in the storage area 1008 of the electronic tag 1003 are transmitted. With reference to the correspondence 1014 (process 1103), state information is recorded in the virtual memory space 1010 on the terminal or server of the corresponding electronic tag (process 1104). An example of information stored in the virtual memory at this time is shown in FIG. The information is composed of a set of sensor tag identification information 1301, acquisition date 1302, and value 1303 of the information source.

  The state information corresponding to the electronic tag 1003 is accumulated on the terminal 1012 or the server 1013 by repeating the above, and can be referred to at any timing as long as communication between the terminal 1012 or the server and 1013 is possible. This information may be written to the electronic tag 1003 when the electronic tag 1003 is within the communication range of the electronic tag writing device 1009.

  As described above, even when direct exchange of information between the sensor tag 1002 and the electronic tag 1003 is impossible, it is possible to virtually accumulate state information in the electronic tag 1003, and the directly connected sensor tag and electronic tag In addition to the use of, various sensor tags, electronic tags, and combinations thereof can be used.

  In addition, as a method of associating the individual identification information of the sensor tag and the electronic tag, there is a method of manually directly relating in advance. In addition, as in the system described in FIG. 3, when the sensor tag can directly acquire the identification information of the electronic tag, the sensor tag transmits the identification information of the electronic tag and the identification information of the electronic tag as a set to the terminal or the server, The association information between the identification information may be generated. Also, there is a method of simultaneously receiving information sent from the sensor tag and reading the electronic tag at a specific information reading point, and associating the individual identification information with each other. An example of the flow of processing at this time is shown in FIG. First, it waits for the reception of information from the sensor tag (process 1401). When the information is received (process 1402), the sensor tag identification information is acquired from the information (process 1403), and the electronic tag reader is controlled to read the electronic tag. (Process 1404), the acquired sensor tag and the identification information of the electronic tag are associated (process 1405), and stored in the server (process 1406).

  As another method, the position and time series from which the electronic tag is read and the position and time series from which the information from the sensor tag is acquired are recorded, and the respective movement paths and the time series are synchronized. There is a method of taking out and associating a combination of an electronic tag and a sensor tag. At this time, if a plurality of electronic tags and sensor tags move together to some extent, the order of the moving electronic tags and sensor tags is detected together, and the electronic tags and sensor tags are related by this order. May be.

  The present invention can be used for an RFID attached to a workpiece.

1 is a configuration example of a production management system using the present invention.

The system configuration example in Example 1 of this invention.

The example of the direct connection of the sensor tag and electronic tag in Example 1 of this invention.

The flow of a process of operation | movement control of the sensor tag in Example 1 of this invention.

5 is a flow of processing of electronic tag writing device control in Embodiment 1 of the present invention.

The structural example of the status information in Example 1 of this invention.

3 is a configuration example of sensor tag operation setting information according to the first embodiment of the present invention.

Flow of state information variation code writing processing in Embodiment 2 of the present invention.

The example of the difference in the information content of the status information variation code and status information history in Example 2 of this invention.

The system structural example in Example 5 of this invention.

The flow of the information writing process to the memory of the virtual electronic tag in Embodiment 5 of the present invention.

The structural example of the status information accumulate | stored in the sensor tag in Example 5 of this invention.

10 is a configuration example of state information stored in a virtual electronic tag memory in Embodiment 5 of the present invention.

The flow of the process of the correlation of the identification information of a sensor tag and an electronic tag in Example 5 of this invention.

Explanation of symbols

101, 201 ... article, 102, 202 ... electronic lug, 103, 205 ... writing device, 104, 203 ... sensor tag, 105 ... reading device, 106, 208 ... terminal, 107, 209 ... data server, 108 ... terminal, 204 ... Storage area, 206 ... Sensor, 207 Read / write device, 210 ... Network, 211 ... Time information, 212 ... Equipment identification information, 213 ... Operation setting information, 214 ... Application program, 215 ... Time information, 216 ... Location identification information, 301 ··· Sensor, 302 · Information read / write IC · 303 · Time information · 304 · Memory · 305 · Electronic tag communication IC · 306 · Antenna

Claims (12)

A storage medium attached to an object,
A memory circuit;
A detection circuit for detecting a state of the object or a surrounding state of the object;
A processing circuit for storing state information detected by the detection circuit in the storage circuit,
The processing circuit converts the state information into data indicating at least one of a change tendency of the state information and a change amount or degree of the state information every predetermined time, and stores the data in the storage circuit. A storage medium characterized by that.   The processing circuit converts the state information into a code indicating a change tendency of the state information every predetermined time and a parameter indicating an amount or degree of change of the state information, and stores the converted information in the storage circuit. The storage medium according to claim 1. It has a time measurement circuit,
The storage medium according to claim 1, wherein the processing circuit measures the predetermined time by using the time measurement circuit.   The processing circuit indicates at least one of a tendency of change of the state information for each predetermined time in the storage circuit and an amount or degree of change of the state information when the change of the state information satisfies a predetermined condition. The storage medium according to claim 1, wherein data is updated.   And a communication circuit that transmits data indicating at least one of a change tendency of the state information and the amount or degree of the change of the state information stored in the storage circuit to the external device. The storage medium according to claim 1. The communication circuit receives control data for controlling the detection operation of the detection circuit from an external device, stores the control data in the storage circuit,
The storage medium according to claim 5, wherein the detection circuit operates according to the control data in the storage circuit. In the management system which can be connected to the storage medium according to claim 5 or 6 and manages the status information,
The identification information in the storage medium transmitted from the storage medium, and data indicating at least one of the change tendency of the state information every predetermined time and the amount or degree of change of the state information are received. A receiving device;
A storage device that stores identification information in the storage medium, and data indicating at least one of a change tendency of the state information and a change amount or degree of the state information for each predetermined time. Management system. A tag set attached to an object, wherein the tag set includes an electronic tag and a sensor tag.
The electronic tag includes an antenna, a memory capable of storing data, and a communication IC that transmits the data in the memory to an external device via the antenna,
The center tag includes a sensor, a writing IC that writes detection data detected by the sensor to the electronic tag, and a watch,
The write IC monitors a change in the detection data along the time measured by the clock, a code indicating a tendency of the change in the detection data every predetermined time, and a change in the detection data every predetermined time A tag set, wherein a parameter indicating the amount or degree of the parameter is written to the electronic tag. The communication IC receives control data for controlling the operation of the sensor tag from an external device,
The tag set according to claim 8, wherein the sensor tag operates according to the control data. In the management system which can be connected to the electronic tag according to claim 8 or 9, and manages the code and the parameter,
A receiving device that receives the identification information in the electronic tag, the code, and the parameter transmitted from the electronic tag;
A management system comprising: a storage device that stores identification information of the electronic tag, identification information of the sensor tag, the code, and the parameter. A storage medium attached to an object,
A memory circuit;
A detection circuit for detecting a state of the object or a surrounding state of the object;
A processing circuit for storing state information detected by the detection circuit in the storage circuit;
A communication circuit that receives control data for controlling the detection operation of the detection circuit from an external device, and stores the control data in the storage circuit;
The detection circuit operates according to the control data in the storage circuit. A tag set attached to an object, wherein the tag set includes an electronic tag and a sensor tag.
The electronic tag includes an antenna, a memory capable of storing data, and a communication IC that transmits the data in the memory to an external device via the antenna,
The center tag includes a sensor, a writing IC that writes detection data detected by the sensor to the electronic tag, and a watch,
The write IC writes the detection data to the electronic tag along the time measured by the watch,
The communication IC receives control data for controlling the operation of the sensor tag from an external device,
The tag set, wherein the sensor tag operates according to the control data.

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