JP5669079B2 - ID management system - Google Patents

Description

  The present invention relates to an ID management system including a plurality of wireless devices and an ID management device that manages IDs of the wireless devices.

  In recent years, it has been known that a radio device such as an RFID (Radio Frequency IDentification) tag is attached to an article to identify and manage the article. As an example of a management system using an RFID tag, an inventory management system that manages the inventory status of commodities displayed in a showcase using a computer is known (for example, see Patent Document 1). This system includes an antenna for a showcase to communicate with an RFID tag affixed to a product on a product shelf, and a detecting means for communicating with the RFID tag via the antenna to detect a unique number of the RFID tag. Transmitting means for transmitting the detected unique number of the RFID tag to a computer via a network. The computer manages the inventory of the merchandise based on the RFID unique number received from the showcase.

JP 2008-214098 A

  A wireless device such as an RFID tag has attracted attention as a device for identifying and managing an article instead of a barcode. In the future, such wireless devices will be used to manage more items such as refrigerator inventory management, in-store product management, chemical management, home appliances themselves, security devices, meter reading devices for electricity, gas, and water. Many are expected to be used.

  A wireless device that needs to identify many articles is set to have a long number of digits of the identification ID, that is, a large amount of information so that the identification ID for identifying the wireless device does not overlap. Since the information amount of the identification ID is large, the load on the memory for storing the identification ID and the network for notifying the identification ID is increased, and accordingly, the communication time is increased and the power consumption is increased.

  On the other hand, when a radio device such as RFID is used within a limited range such as at home, even if the number of digits of the identification ID is shortened, that is, the amount of information is reduced, the articles within the range are managed. Is fully possible. Therefore, when a wireless device is used within a limited range, it is preferable to set the information amount of the identification ID of the wireless device as small as possible.

  The present invention has been made in view of the above circumstances, and when using a wireless device within a limited range, the communication time is shortened by reducing the information amount of the identification ID of the wireless device, An object of the present invention is to provide an ID management system capable of saving power.

An ID management system according to the present invention includes a plurality of wireless devices and an ID management device that manages an ID of the wireless device, wherein there are a plurality of ID management devices, and a plurality of sub-relay networks are provided by the plurality of ID management devices. The ID management device includes an ID receiving unit that receives a first ID for identifying the wireless device, and a second information amount that is smaller than the first ID. A storage unit for storing a plurality of IDs, and an ID designating unit for designating a second ID corresponding to the first ID received by the ID reception unit from a plurality of second IDs stored in the storage unit When, wherein the ID management device, a sub-relay network ID for identifying the sub-relay network managing, generated from distinguishing information with other ID management device, the storage unit, the ID reception Stored in association with the second ID specified by the first ID and the ID specified portion received by the ID specifying section, based on said sub-relay network ID, it is identified by the sub-relay network ID The second ID range specified for the wireless device under the ID management apparatus belonging to the sub-relay network is specified, and the second ID range is duplicated for different sub-relay network IDs. Is not specified.

With this configuration, when a wireless device is used within a limited range, it is possible to shorten the communication time and save power by reducing the information amount of the identification ID of the wireless device.
Furthermore, to specify the range of the second ID for each sub relay network, since the second ID in a plurality of sub relay networks do not overlap, in the second ID with minimal amount of information, misidentify the communication partner It is possible to communicate without any problems.

  In the ID management system of the present invention, the storage unit stores usage record information for identifying whether or not the second ID is used in association with the second ID, and the ID designation Based on the usage record information stored in the storage unit, the unit designates a second ID having no usage record from the plurality of second IDs stored in the storage unit.

  With this configuration, it is possible to preferentially specify the ID corresponding to the first ID from the second ID that has no use record, and the second ID can be used effectively.

  In the ID management system of the present invention, the storage unit stores current usage information for identifying whether the second ID is in use in association with the second ID, and the ID designation unit In the case where there is no second ID with no usage record, a second ID that is not in use from a plurality of second IDs stored in the storage unit based on the current usage information stored in the storage unit Is specified.

  With this configuration, it is possible to preferentially specify an ID corresponding to the first ID from the second IDs that are not currently used among the second IDs that have not been used, and effectively use the second ID. can do.

  The ID management system of the present invention further includes a monitoring device that monitors the wireless device, and the monitoring device stores the first ID for identifying the wireless device; and the first device When the change notification signal receiving unit that receives a change notification signal for notifying the change of the wireless device identified by the ID from the ID management apparatus and the change notification signal receiving unit is received, the change notification signal is received. Wireless device state determination for determining whether or not the wireless device identified by the first ID is absent based on whether or not the first ID corresponding to the signal is stored in the monitoring device storage unit A section.

  With this configuration, when the monitoring device is notified that the state of the wireless device has changed, the wireless device is not present in the ID management system due to removal of the wireless device or a communication failure occurs temporarily. And can accurately grasp the state of the monitoring device.

  In the ID management system of the present invention, when the wireless device state determination unit determines that the wireless device is absent, the first ID for identifying the wireless device is deleted from the storage unit of the ID management device. A deletion request signal transmission unit that transmits a deletion request signal to the ID management device.

  With this configuration, it is possible to notify the ID management device that the first ID of the wireless device should be deleted from the storage unit of the ID management device because the wireless device is absent.

  In addition, the ID management system of the present invention includes a deletion request signal receiving unit that receives the deletion request signal from the monitoring device, and a first ID corresponding to the deletion request signal received by the deletion request signal receiving unit. An ID deletion unit to be deleted from the storage unit.

  With this configuration, it is possible to efficiently use a finite second ID corresponding to the first ID by deleting the first ID to be deleted that is no longer necessary in the ID management apparatus.

  In the present invention, when a wireless device is used within a limited range, it is possible to shorten the communication time and save power by reducing the information amount of the identification ID of the wireless device.

The block diagram which shows an example of the system configuration | structure of the ID management system in the 1st Embodiment of this invention The block diagram which shows an example of a structure of the ID management apparatus in the 1st Embodiment of this invention. The figure which shows an example of the table which the management apparatus memory | storage part in the 1st Embodiment of this invention has. The block diagram which shows an example of a structure of the monitoring apparatus in the 1st Embodiment of this invention It is a flowchart which shows an example of operation | movement of the ID management apparatus in the 1st Embodiment of this invention. The block diagram which shows an example of the system configuration | structure of the ID management system in the 2nd Embodiment of this invention The figure which shows an example of the table which the management apparatus memory | storage part in the 3rd Embodiment of this invention has. It is a flowchart which shows an example of operation | movement of the ID management apparatus in the 3rd Embodiment of this invention. It is a flowchart which shows an example of operation | movement of the monitoring apparatus in the 3rd Embodiment of this invention. The block diagram which shows an example of the system configuration | structure of the ID management system in the 4th Embodiment of this invention

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

(First embodiment)
FIG. 1 is a block diagram showing an example of the system configuration of an ID management system according to the first embodiment of the present invention. The ID management system 1 shown in FIG. 1 includes a monitoring device 10, an ID management device 20, a wireless device 30 whose ID is managed by the ID management device 20, and a relay device 40 that manages the ID of the ID management device 20. Is done. Moreover, the monitoring device 10, the ID management device 20, and the relay device 40 may be plural. Further, the number of wireless devices 30 is not limited to the example shown in FIG.

  The ID management system 1 has a public network, a main relay network, and a sub relay network. The public network is formed with one or more monitoring devices 10 and one or more relay devices 40. The main relay network is formed by including one or a plurality of relay devices 40 and one or a plurality of ID management devices 20 under the relay device 40. The sub-relay network is formed by including one or a plurality of ID management devices 20 and one or a plurality of wireless devices 30 subordinate to the ID management device 20.

  The monitoring device 10 is a device that monitors the ID management device 20, the wireless device 30, and the relay device 40. For example, the monitoring device 10 is arranged in an information center managed by a gas company and an information center managed by a security management company. The monitoring device 10 has a wired or wireless communication function, and communicates with the wireless device 30 via the ID management device 20.

  The ID management device 20 has a communication function and relays communication between the monitoring device 10 and the wireless device 30. The ID management device 20 may be a device different from the wireless device 30, or one of the plurality of wireless devices 30 may function as the ID management device 20. The ID management device 20 mutually converts a first ID and a second ID, which will be described later, when relaying communication. In addition, in order to associate the first ID and the second ID, the second ID corresponding to the first ID is appropriately designated (assigned).

  Here, the first ID is an identification ID used for identifying the wireless device 30 in the public network and the main relay network. The second ID is an identification ID used for identifying the wireless device 30 in the sub relay network. The second ID has a smaller amount of information than the first ID, the first ID is represented by 12 digits, for example, and the second ID is represented by 1 digit, for example. One digit is represented by 8 bits and can represent a value of 0 to 255.

  The wireless device 30 has a wireless communication function, such as a window opening / closing detection sensor, a gas leak sensor, a fire sensor, a fire alarm, a measuring device (meter), and the like. The wireless device 30 communicates with the monitoring device 10 via the ID management device 20. In addition, the wireless device 30 performs intermittent communication with the ID management device 20.

  As a signal transmitted from the monitoring device 10 to the wireless device 30, battery information of the wireless device 30, measurement result information by the wireless device 30, survival confirmation information indicating whether or not the wireless device 30 can operate effectively is requested. An information request signal can be considered. In addition, the signal may include various commands such as a meter reading command by the wireless device 30, a security management command for grasping a gas leak, and a remote shut-off command for the gas meter. The monitoring device 10 transmits an information request signal to the wireless device 30 periodically or at a necessary timing. Note that the information request signal is an example, and the monitoring apparatus 10 may transmit other information to the wireless device 30.

  On the other hand, the signal transmitted from the wireless device 30 to the monitoring device 10 includes battery information of the wireless device 30, information of measurement results by the wireless device 30, survival confirmation information of the wireless device 30, meter reading value, gas leak information, and the like. Sensor information can be considered. The wireless device 30 transmits sensor information to the monitoring device 10 in response to an information request signal from the monitoring device 10 or periodically. For example, the wireless device 30 performs various measurements based on various commands such as a meter reading command from the monitoring device 10 and notifies the monitoring device 10 of the measurement result. Note that the sensor information is an example, and the wireless device 30 may transmit other information to the monitoring device 10.

  Next, FIG. 2 is a block diagram illustrating an example of the configuration of the ID management device 20. The ID management device 20 illustrated in FIG. 2 includes a management device storage unit 210, a management device reception unit 220, a management device transmission unit 230, and a management device control unit 240.

  The management device storage unit 210 includes a table that stores the first ID and the second ID, and the first ID and the second ID corresponding to the first ID specified by the management device control unit 240. Are stored in association with each other. In addition, for each second ID, a usage record flag for identifying whether it has been used to date, that is, whether there is a usage record, is stored in association with the second ID. Also good. For example, when the use record flag is 1, it indicates that there is a use record, and when the use record flag is 0, it indicates that there is no use record. Further, for each second ID, a current use flag for identifying whether or not it is currently in use may be stored in association with the second ID. For example, when the current use flag is 1, it indicates that it is currently in use, and when the current use flag is 0, it indicates that it is not currently in use. In the table of the management device storage unit 210, the second IDs are stored in ascending order or descending order. FIG. 3 is a diagram illustrating an example of a table included in the management device storage unit 210.

  The management device receiving unit 220 receives various signals and various information. For example, the management device receiving unit 220 includes the information request signal including the first ID for identifying the transmission destination wireless device 30 from the monitoring device 10 and the second ID from the transmission source wireless device 30. Receive sensor information, etc.

  The management device transmission unit 230 transmits various signals and various information. For example, the management device transmission unit 230 transmits an information request signal including the second ID converted from the first ID for identifying the transmission destination wireless device 30 by the management device control unit 240 to the transmission destination wireless device. 30. In addition, the management device transmission unit 230 sends, for example, sensor information including the first ID converted from the second ID for identifying the transmission source wireless device 30 by the management device control unit 240 to the monitoring device 10. Send.

  The management device control unit 240 performs various controls in the management device 20. For example, the management device control unit 240 specifies a second ID corresponding to the first ID received by the management device reception unit 220 from the plurality of second IDs stored in the management device storage unit 210. After the second ID is specified, for example, when the management device control unit 240 performs communication between the monitoring device 10 and the wireless device 30, the first request included in the information request signal from the monitoring device 10 is used. Or a second ID corresponding to the second ID included in the sensor information from the wireless device 30 or a first ID corresponding to the second ID included in the sensor information from the wireless device 30.

  Next, FIG. 4 is a block diagram illustrating an example of the configuration of the monitoring device 10. 4 includes a monitoring device transmission unit 110, a monitoring device reception unit 120, and a monitoring device control unit 130.

  The monitoring device transmission unit 110 transmits various signals and various information to the ID management device 20. For example, the information request signal including the first ID of the transmission destination wireless device 30 is transmitted to the ID management device 20.

  The monitoring device receiving unit 120 receives various signals and various information from the ID management device 20. For example, the monitoring device reception unit 120 receives information (sensor information) for an information request signal from the ID management device 20 using the first ID.

  The monitoring device control unit 130 performs various controls in the monitoring device 10.

  The monitoring device storage unit 140 stores various types of information. For example, the first ID of the wireless device 30 is stored.

Next, the operation of the ID management device 20 will be described.
FIG. 5 is a flowchart showing an example of the operation of the ID management device 20. Here, the ID management device 20 designates the second ID for the first ID of the wireless device 30, and registers the first ID in the table of the management device storage unit 210 (initial registration). Is assumed. In the table of the management device storage unit 210, it is assumed that the second IDs are arranged in ascending order.

  First, the management device receiving unit 220 receives a first ID from a specific wireless device 30 that is an ID registration target (step S101). Subsequently, the management device control unit 240 determines whether or not the first ID received by the management device reception unit 220 is already stored in the table of the management device storage unit 210 (step S102). If it is already stored, the received first ID is discarded (step S103).

  On the other hand, when the received first ID is not stored in the table of the management device storage unit 210, the management device control unit 240 searches the usage record flag in the table in order based on the second ID. (Step S104). Then, the management apparatus control unit 240 determines whether all the second IDs have been searched (Step S105).

  If the search for all the second IDs has not been completed, the management apparatus control unit 240 determines whether the usage record flag corresponding to the second ID being searched is 1 or 0 (step S106). ). If the usage record flag corresponding to the second ID being searched is 1, the process returns to step S104 to search for the usage record flag corresponding to the subsequent second ID. On the other hand, when the usage record flag corresponding to the second ID being searched is 0, the management apparatus control unit 240 determines the second ID being searched, that is, the second ID whose use record flag is 0. The smallest one of them is designated as the second ID stored in the management device storage unit 210 in association with the first ID received in step S101 (step S107). Since use of the second ID is started, the management device control unit 240 changes the use result flag corresponding to the second ID to 1 and the current use flag to 1 (step S108).

  If the search for all the second IDs is completed in step S105, the management apparatus control unit 240 searches the current use flag in the table in order based on the second ID (step S109). Then, the management apparatus control unit 240 determines whether or not all current use flags have been searched based on the second ID (step S110). If all current use flags have been searched, the processing in FIG. 5 is terminated. On the other hand, if not all the current usage flags have been searched, the management apparatus control unit 240 determines whether the current usage flag corresponding to the second ID being searched is 1 or 0 (step) S111). If the current use flag corresponding to the second ID being searched is 1, the process returns to step S109 to search for the current use flag corresponding to the subsequent second ID. On the other hand, when the current use flag being searched is 0, the management apparatus control unit 240 sets the second ID being searched, that is, the second ID whose use record flag is 1 and whose current use flag is 0. The smallest one is designated as the second ID stored in the management device storage unit 210 in association with the first ID received in step S101 (step S112). Then, since use of the second ID is started, the management control device 240 changes the current use flag to 1 (step S112).

  For example, in the example illustrated in FIG. 3, the second IDs “2” and “3” whose usage record flag is “0”, and the following are first preferentially assigned to the unregistered first ID. When there is no second ID with no actual usage record, the second ID “1” having the current usage flag “0” is assigned to the unregistered first ID.

  According to such an ID management system 1 in the present embodiment, when managing the wireless device 30 within a limited range such as a sub-relay network, the information amount of the identification ID of the wireless device 30 is reduced. It is possible to shorten the communication time and save power. In the present embodiment, when the ID management device 20 recognizes the first ID that is not stored in the table, the second ID corresponding to the first ID is first a second ID that has no record of use. Is designated preferentially, and then a second ID that has been used but is not currently used is designated. As a result, IDs that are not designated as the second ID corresponding to the first ID can be reduced, and the second ID can be efficiently assigned and used.

(Second Embodiment)
The second embodiment is different from the first embodiment in that a network (sub relay network) to which the ID management apparatus 20 belongs is considered.

  FIG. 6 is a block diagram showing an example of the system configuration of the ID management system according to the second embodiment of the present invention. The ID management system 1B shown in FIG. 6 has basically the same configuration as the ID management system 1 shown in FIG. 1, but is managed by the ID management device 20A and the ID management device 20A in the sub-relay network A. Alternatively, a plurality of wireless devices 30A belong, and one or more wireless devices 30B managed by the ID management device 20B and the ID management device 20B belong to the sub relay network B. In the ID management system 1B illustrated in FIG. 6, the same components as those of the ID management system 1 illustrated in FIG. 1 are denoted by the same reference numerals, and description thereof is omitted or simplified.

  The ID management system 1B of the present embodiment includes a plurality of ID management devices 20, and each ID management device 20 and one or a plurality of wireless devices 30 whose IDs are managed by the ID management device 20 are connected to one network (sub-relay network). ) Is formed. For example, one sub relay network is formed by the ID management device 20A and one or a plurality of wireless devices 30A whose IDs are managed by the ID management device 20A. Further, one sub relay network is formed by one or a plurality of wireless devices 30B whose IDs are managed by the ID management device 20B and the ID management device 20B. That is, a plurality of sub-relay networks are formed by the plurality of ID management devices 20. Note that the number of sub-relay networks is not limited to the example shown in FIG.

  The management device storage unit 210 according to the present embodiment includes a table in which a network ID (sub relay network ID) is stored together with at least a first ID and a second ID. The sub relay network ID is an identification ID for identifying the sub relay network to which the ID management device 20 belongs. Moreover, you may have a use performance flag and a present use flag similarly to 1st Embodiment.

  The management apparatus control unit 240 according to the present embodiment is designated for one or a plurality of wireless devices 30 under the ID management apparatus 20 based on the sub relay network ID of the sub relay network to which the ID management apparatus 20 belongs. Specifies a range of 2 IDs. For example, when the sub relay network ID is “1”, the second ID of the wireless device 30 belonging to the sub relay network is in the range of “001 to 050”, and when the sub relay network ID is “2”, the sub relay network ID is “1”. The second ID of the wireless device 30 belonging to the relay network is designated in the range of “051 to 100”. Further, the remainder obtained by dividing the first ID by a predetermined number (for example, “12”) may be calculated as the sub-relay network ID, and similarly, the range of the second ID may be designated based on the sub-relay network ID.

  If the second ID is specified for each sub-relay network, the same second ID may be specified for the wireless devices 30 belonging to different sub-relay networks. When these networks are close to each other, the wireless devices 30 belonging to each sub-relay network cannot be identified and may be erroneously recognized. In the example illustrated in FIG. 6, there is a possibility that the wireless device 30A1 and the wireless device 30B1 are erroneously recognized. According to the ID management system 1B of the present embodiment, the second ID specified to the wireless device 30 in different sub-relay networks is unlikely to be the same ID, and the second ID having the minimum amount of information. Thus, communication can be performed without misidentifying the communication partner.

(Third embodiment)
In the third embodiment, it is considered to delete the first ID for identifying the wireless device 30 that has become unnecessary due to removal or the like from the table of the management device storage unit 210. The configuration of the ID management system of this embodiment is the same as the configuration of the ID management system 1 shown in FIG. 1 or the ID management system 1B shown in FIG.

  The management device storage unit 210 of the present embodiment includes a table that stores at least a first ID, a second ID, a monitoring device deletion request flag, and a wireless device deletion request flag. Further, as in the previous embodiment, a usage record flag, a current usage flag, a network ID, and the like may be stored in the table. FIG. 7 is a diagram illustrating an example of a table included in the management device storage unit 210.

  Here, the monitoring device deletion request flag indicates whether or not the monitoring device 10 has requested to delete the first ID of the specific wireless device 30 to be deleted from the table of the management device storage unit 210. Flag. The wireless device deletion request flag is a flag indicating whether or not a request for deleting the first ID of the specific wireless device 30 from the table of the management device storage unit 210 is received from a device other than the monitoring device 10. The deletion request flag (monitoring device deletion request flag, wireless device deletion request flag) is 1 when deletion of the first ID is requested, and 0 when deletion of the first ID is not requested. For example, when the wireless device deletion request flag is requested to delete the first ID of the specific wireless device 30 by an input unit (not shown) of the ID management device 20, the deletion of the first ID from the specific wireless device 30 itself is performed. When the ID management device 20 periodically checks the existence of the specific wireless device 30, it is 1 when there is no response from the specific wireless device 30 within a predetermined time.

  The management device receiving unit 220 of the present embodiment, for example, the deletion request signal including the first ID of the specific wireless device 30 from the monitoring device 10, the first of the specific wireless device 30 from the specific wireless device 30. A deletion request signal including the second ID corresponding to the ID is received.

  For example, the management device transmission unit 230 of the present embodiment transmits a change notification signal that includes the first ID of the specific wireless device 30 and notifies the change of the specific wireless device 30 to the monitoring device 10. The change notification signal is transmitted when the wireless device deletion request flag stored in the management device storage unit 210 changes from 0 to 1.

  For example, the management device control unit 240 of this embodiment deletes the first ID included in the deletion request signal received by the management device reception unit 220 from the table of the management device storage unit 210. Accordingly, the second ID corresponding to the deleted first ID can be assigned as the first ID of the other wireless device 30.

  The monitoring device storage unit 140 of the present embodiment stores at least the first ID of the wireless device 30, but the wireless device 30 that has become unnecessary to be monitored (for example, from the ID management system after being registered in the storage unit) For the removed wireless device), the first ID is deleted from the storage unit. Therefore, only the information on the wireless device 30 that is supposed to exist in the ID management system is stored in the monitoring device storage unit 140.

  The monitoring device reception unit 120 according to the present embodiment receives, for example, a change notification signal that includes the first ID of the specific wireless device 30 and notifies the change of the specific wireless device 30.

  For example, the monitoring device control unit 130 according to the present embodiment determines whether or not the first ID of the specific wireless device 30 included in the change notification signal received by the monitoring device reception unit 120 is stored in the monitoring device storage unit 140. On the basis of whether the specific wireless device 30 identified by the first ID is absent or whether a communication failure has occurred in the specific wireless device 30 is determined. When the first ID of the specific wireless device 30 is stored in the monitoring device storage unit 140, the monitoring device control unit 130 determines that a communication failure has occurred in the specific wireless device 30 and stores it. If not, it is determined that the specific wireless device 30 is absent.

  For example, when the monitoring device control unit 130 determines that the specific wireless device 30 is absent, the monitoring device transmission unit 110 of the present embodiment assigns the first ID of the specific wireless device 30 to the management device storage unit 210. A deletion request signal for deleting from the table of the ID management device 20 is transmitted. As a result, unnecessary management information can be deleted from the ID management apparatus 20.

Next, the operation of the ID management device 20 of this embodiment will be described.
FIG. 8 is a flowchart showing an example of the operation of the ID management apparatus 20 of the present embodiment.

  First, the management device receiving unit 220 receives a deletion request signal for the first ID from the specific wireless device 30 (step S201). Subsequently, the management device control unit 240 sets the wireless device deletion request flag corresponding to the specific wireless device 30 stored in the management device storage unit 210 to 1 (step S202). As described above, it is also conceivable to set the wireless device deletion request flag to 1 based on an event other than the reception of the deletion request signal from the specific wireless device 30. Subsequently, the management device transmission unit 230 transmits a change notification signal including the first ID of the specific wireless device 30 stored in the management device storage unit 210 to the monitoring device 10 (step S203).

  After transmitting the change notification signal to the monitoring device 10, the management device control unit 240 sends a deletion request signal of the first ID of the specific wireless device 30 to the change notification signal from the monitoring device 10 by the management device receiving unit 220. It is determined whether or not it has been received (step S204). When the deletion request signal from the monitoring device 10 is received, the management device control unit 240 deletes the first ID of the specific wireless device 30 corresponding to the deletion request signal from the table of the management device storage unit 210 ( Step S205). When the first ID is deleted, the management apparatus control unit 240 sets the current use flag corresponding to the deleted first ID to 0 (step S206).

  For example, as shown in FIG. 7, the wireless device 30 identified by the second ID “1” is in the state of the wireless device deletion request flag “1” and the monitoring device deletion request flag “0”. A change notification signal is transmitted for the device 30, and the monitoring device 10 is inquired about the presence or absence of the wireless device 30. Further, regarding the wireless device 30 identified by the second ID “0”, since the wireless device deletion request flag “1” and the monitoring device deletion request flag “1” are in the state, the first ID is deleted from the table. .

  According to the processing of FIG. 8 as described above, the first ID is deleted from the management device storage unit 210 when there is a deletion permission from the monitoring device 10 after the deletion request for the specific wireless device 30 is received. Therefore, it is possible to prevent the first ID from being erroneously deleted due to the occurrence of a primary communication failure.

Next, operation | movement of the monitoring apparatus 10 of this embodiment is demonstrated.
FIG. 9 is a flowchart illustrating an example of the operation of the monitoring apparatus 10 according to the present embodiment.

  First, the monitoring device reception unit 120 receives a change notification signal including the first ID of the specific wireless device 30 from the ID management device 20 (step S301). When receiving the change notification signal, the monitoring device control unit 130 is absent of the specific wireless device 30 based on whether or not the first ID of the specific wireless device 30 is stored in the monitoring device storage unit 140. Whether or not (step S302). When the specific wireless device 30 is absent, the monitoring device transmission unit 110 performs ID management on a deletion request signal for deleting the first ID of the specific wireless device 30 from the table of the management device storage unit 210. It transmits to the apparatus 20 (step S303).

  In step S302 described above, whether or not the specific wireless device 30 is absent is determined based on whether or not the first ID of the wireless device 30 is stored in the monitoring device storage unit 140. However, the timing at which the first ID of the wireless device 30 stored in the monitoring device storage unit 140 is deleted, and the management device receiving unit 220 receives the deletion request signal of the first ID from the wireless device 30. The timing at which the change notification signal is transmitted from the ID management device 20 may not always match. This is because, for example, the monitoring device that monitors the wireless device 30 removes the wireless device 30 and stores the monitoring device by an input unit (not shown) of the monitoring device 10 to reflect the removal based on an instruction from the monitoring device. This is because the timing at which the first ID of the removal target wireless device 30 stored in the unit 140 is deleted may not match. In this case, the monitoring apparatus 10 should originally transmit the deletion request signal, but there are cases where it cannot be transmitted.

  Therefore, instead of the operation illustrated in FIG. 9, the monitoring device 10 transmits a deletion request signal to the ID management device 20 when the first ID of the wireless device 30 stored in the monitoring device storage unit 140 is deleted. In this way, the operation of the monitoring device 10 may be devised.

  Alternatively, since the ID management device 20 that has transmitted the change notification signal cannot subsequently receive the deletion request signal within a predetermined period, the wireless device deletion request flag “1” and the monitoring device deletion request flag “0” are set. In this case, the operation of the ID management device 20 may be devised such that the change notification signal is retransmitted to the monitoring device 10 at regular intervals.

  According to the processing of FIG. 9 as described above, the state of the specific wireless device 30 is confirmed from the information stored in the monitoring device 10, and the specific wireless device 30 is absent in the ID management system or simply temporarily. Thus, it is possible to notify the ID management device 20 whether a communication failure has occurred.

  According to such an ID management system of the present embodiment, the second ID that is finite is efficiently used by deleting the first ID to be deleted that is no longer necessary in the ID management device 20 from the table. be able to.

  In steps S202 to S203, the management device control unit 240 sets the wireless device deletion request flag corresponding to a specific wireless device to 1, and then the management device transmission unit 230 is stored in the management device storage unit 210. It has been described that the change notification signal including the first ID of the specific wireless device 30 is transmitted to the monitoring device 10. However, as described above, when the wireless device deletion flag is requested to delete (1) the first ID of the specific wireless device 30 by an input unit (not shown) of the ID management device 20, (2) the specific wireless device When the deletion of the first ID is requested by itself, (3) even if the ID management device 20 periodically checks the existence of the specific wireless device 30, a response is received from the specific wireless device 30 within a predetermined time. “1” when there is not. Therefore, it is difficult to determine whether or not the first ID may be deleted because the cause of (3) is not known, but in the cases of (1) and (2), it is transmitted from the monitoring device 10. Even if the first ID is deleted without waiting for the deletion request signal, it is considered that the possibility of adverse effects is low.

  Therefore, the ID management device 20 can perform FIG. 8 only when there is no response from the specific wireless device 30 within a predetermined time even if the presence of the specific wireless device 30 is periodically confirmed as in (3) above. The operation shown in FIG. When the request from the input unit is confirmed in (1) above or when the deletion request of the first ID is confirmed from the wireless device 30 in (2) above, steps S203 to S204 are performed after step S202. Step S205 and step S206 may be performed without performing the above.

(Fourth embodiment)
In the fourth embodiment, it is considered that the relay device 40 manages the ID management device 20 so that the ID management device 20 can use different identification IDs in the public network and the main relay network.

  FIG. 10 is a block diagram illustrating an example of a system configuration of an ID management system according to the fourth embodiment of the present invention. An ID management system 1C shown in FIG. 10 includes a monitoring device 10, an ID management device 20, a wireless device 30 (not shown in FIG. 10), and a relay device 40. The ID management device 20 manages the identification ID (first ID and second ID) of the wireless device 30 as in the first to third embodiments. The relay device 40 manages the identification ID (first ID and second ID) of the ID management device 20. A plurality of monitoring devices 10 and relay devices 40 may be provided. Further, the number of ID management devices 20 is not limited to the example shown in FIG. In the ID management system 1C of the present embodiment, the same components as those in the ID management systems shown in the first to third embodiments are denoted by the same reference numerals, and description thereof is omitted or simplified.

  The first ID of the ID management device 20 is an identification ID used to identify the ID management device 20 in the public network. The second ID is an identification ID used for identifying the ID management device 20 in the main relay network. Similarly to the identification ID of the wireless device 30, the second ID of the ID management device 20 has a smaller amount of information than the first ID of the ID management device 20, and the first ID is represented by, for example, 12 digits. The second ID is represented by one digit, for example.

  The monitoring device 10 monitors the ID management device 20, the wireless device 30, and the relay device 40. For example, one ID management device 20 is arranged in one house located in a predetermined area. A wireless device 30 (not shown) communicates with the monitoring device 10 via the ID management device 20 and the relay device 40. One relay device 40 is arranged in a predetermined area such as one apartment or one district.

  Similar to the ID management device 20, the relay device 40 has a function as an ID management device that manages identification IDs (first ID and second ID), and has the same configuration as the ID management device 20. The same processing is performed. However, the first ID and the second ID of the wireless device 30 are not managed in the table of the storage unit of the relay device 40, but the first ID and the second ID of the ID management device 20 are managed.

  The relay device 40 has a wired and wireless communication function, and relays communication between at least a communication device on the public network such as the monitoring device 10 and one or a plurality of ID management devices 20 under the relay device 40. The relay device 40 relays an information request signal from the monitoring device 10, sensor information from the wireless device 30 via the ID management device 20, and the like.

  According to the ID management system 1C in this embodiment, as in the first embodiment, when managing the ID management device 20 under the relay device 40 within a limited range such as the main relay network, By reducing the information amount of the identification ID of the ID management device 20, it is possible to shorten the communication time and save power. Thereby, it is possible to reduce communication traffic in communication in the main relay network rather than communication in the public network. Similarly to the second embodiment, the range of the second ID of the ID management device 20 may be specified based on the network ID of the main relay network. Furthermore, similarly to the third embodiment, the first ID of the ID management device 20 to be deleted that is no longer necessary may be deleted from the table of the storage unit of the relay device 40.

  The present invention is an ID management system capable of shortening communication time and saving power by reducing the information amount of identification ID of the wireless device when the wireless device is used within a limited range. Useful for.

1, 1B ID management system 10 monitoring device 20 ID management device 30, 30A, 30B wireless device 40 relay device 110 monitoring device transmission unit 120 monitoring device reception unit 130 monitoring device control unit 140 monitoring device storage unit 210 management device storage unit 220 management Device receiver 230 Management device transmitter 240 Management device controller

Claims (6)

An ID management system comprising a plurality of wireless devices and an ID management device for managing IDs of the wireless devices, wherein there are a plurality of ID management devices, and a plurality of sub-relay networks are formed by the plurality of ID management devices. There,
The ID management device
An ID receiving unit that receives a first ID for identifying the wireless device;
A storage unit for storing a plurality of second IDs having a smaller amount of information than the first ID;
An ID designating unit for designating a second ID corresponding to the first ID received by the ID receiving unit from the plurality of second IDs stored in the storage unit;
With
The storage unit stores the first ID received by the ID receiving unit and the second ID specified by the ID specifying unit in association with each other,
The ID specifying unit, a sub-relay network ID for identifying the sub-relay network managing, generated from distinguishing information with other ID management device, based on the sub-relay network ID, by the sub-relay network ID Specify the range of the second ID specified for the wireless device under the ID management device belonging to the identified sub-relay network,
The range of the second ID is not specified redundantly for different sub-relay network IDs,
ID management system. The ID management system according to claim 1,
The storage unit stores usage record information identifying whether or not there is a usage record of the second ID in association with the second ID;
The ID designation unit designates a second ID having no usage record from a plurality of second IDs stored in the storage unit, based on the usage record information stored in the storage unit. ID management system. The ID management system according to claim 2,
The storage unit stores current usage information for identifying whether the second ID is in use in association with the second ID;
When there is no second ID with no usage record, the ID designation unit is in use from a plurality of second IDs stored in the storage unit based on the current usage information stored in the storage unit. Specify no second ID ID management system. The ID management system according to any one of claims 1 to 3, further comprising:
A monitoring device for monitoring the wireless device;
The monitoring device
A monitoring device storage unit for storing the first ID for identifying the wireless device;
A change notification signal receiving unit for receiving a change notification signal for notifying a change of a wireless device identified by the first ID from the ID management device;
When a change notification signal is received by the change notification signal receiving unit, based on whether or not a first ID corresponding to the change notification signal is stored in the monitoring device storage unit, A wireless device state determination unit that determines whether the wireless device to be identified is absent;
An ID management system comprising: The ID management system according to claim 4,
The monitoring device
When the wireless device state determination unit determines that the wireless device is absent, a deletion request signal for deleting a first ID for identifying the wireless device from the storage unit of the ID management device is used as the ID An ID management system comprising a deletion request signal transmission unit for transmission to a management device. The ID management system according to claim 5,
The ID management device
A deletion request signal receiving unit for receiving the deletion request signal from the monitoring device;
An ID deletion unit that deletes the first ID corresponding to the deletion request signal received by the deletion request signal reception unit from the storage unit;
An ID management system comprising:

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