JP2015207089A - Device management device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a device management device capable of automatically determining whether or not a new device is for replacement with an existing device.SOLUTION: The device management device (gateway device) is provided with: an information storage unit 2 that stores, for each device, device information including on/off information which is either of an on value indicating that power supply of the device is on or an off value indicating that the power supply is off; and an information management unit 3 that determines, when the new device is connected to a gateway device (1), whether or not the new device is connected to be replaced with another device already connected, on the basis of the on/off information of the device information stored in the information storage device 2 and reads-out, when it is determined that the new device is for replacement, at least a part of information other than the on/off information from the device information of the other device in the information storage unit 2 to write the at least a part of information in the device information of the new device.

Description

  The present invention relates to a device management apparatus that can automatically determine whether a new device is for replacement with an existing device.

There is a problem that it takes time and effort to manage device information on each service server in constructing a system that realizes provision of a plurality of services by linking devices across multiple homes.
Therefore, by registering devices by group using the community management server, it becomes unnecessary to manage the address of the terminal in the service server, and it is possible to reduce the labor of device information management in the service server. . Here, the community management server manages the community using an alias ID obtained by combining a GWID for identifying a gateway (GW) in the user's home and a local ID for identifying each device (see FIG. 16). ).

JP2013-125448A

  However, if the device is replaced, the local ID changes, and the alias ID registered in the community management server cannot be used. In order to continue using the service, it was necessary to re-register the alias ID managed by the community management server (see FIG. 17). That is, the device owner has to delete the registration of the old device ID and register the new device ID each time the device is replaced.

  The present invention has been made in view of the above problems, and the object of the present invention is to provide a device management apparatus that can automatically determine whether a new device is for replacement with an existing device. It is to provide.

  In order to solve the above problems, a device management apparatus according to the present invention is a device management apparatus that manages a device connected to a gateway apparatus, and has an on value or an off value indicating that the power of the device is on. An information storage unit that stores device information including on / off information that is one of off values indicating that there is a device, and if a new device is connected to the gateway device, the information is stored in the information storage unit. Using the on / off information of the device information, exchange determination means for determining whether or not the new device is connected for exchange with another connected device, and if the information is determined to be exchanged, the information Read at least a part of the information other than the on / off information from the device information of the other device in the storage unit, and Characterized in that it comprises an information writing means for writing the scan information.

  According to the present invention, it is possible to automatically determine whether a new device is for replacement with an existing device.

It is a figure which shows the structure of the device management apparatus which concerns on this Embodiment. It is a figure which shows an example of device information. It is a figure which shows the sequence at the time of a new device being connected not for exchange with other connected devices. It is a figure which shows the first half of the sequence at the time of a new device being connected for exchange with other connected devices. It is a figure which shows the second half of the sequence at the time of a new device being connected for exchange with other connected devices. It is a figure which shows the sequence at the time of controlling a device from a service server. It is the figure which modeled the motion in the device management apparatus when a new device is connected for exchange with other connected devices, and a new device is controlled. It is a detailed flowchart of the determination performed by step S21. It is explanatory drawing of 1st Example which concerns on determination performed by step S2107. It is explanatory drawing of 2nd Example which concerns on determination performed by step S2107. It is explanatory drawing of 3rd Example which concerns on determination performed by step S2107. It is explanatory drawing of 4th Example which concerns on determination performed by step S2107. It is explanatory drawing of the Example which concerns on determination performed by step S2119. It is a flowchart of the determination in the modification of this Embodiment. It is a detailed flowchart of the determination method selection performed by step S101. It is a 1st figure for demonstrating a prior art. It is a 2nd figure for demonstrating a prior art.

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

FIG. 1 is a diagram illustrating a configuration of a device management apparatus according to the present embodiment.
The device management apparatus is configured in, for example, a gateway apparatus, etc., and the gateway apparatus is connected to service servers A, B, etc., and is connected to devices 01, 02, etc.

  The device management apparatus is an apparatus that uses, as new device information, information on another device that has been stored when the newly connected device is connected for exchange with another connected device. .

  The device management apparatus includes a service communication unit 1 that communicates with a service server, an information storage unit 2 that stores device information (referred to as device information) and history information about power on / off of the device (referred to as on / off history information), information storage The information management part 3 which manages the information of the part 2, and the device communication part 4 which communicates with a device are provided.

  The device management apparatus may be configured in a service server or a platform server that mediates between the service server and the gateway apparatus.

  Hereinafter, the device management apparatus will be described as being configured in a gateway apparatus or the like.

FIG. 2 is a diagram illustrating an example of device information.
The information storage unit 2 stores device information for each device. The figure shows three pieces of device information.

  The device information includes a device ID indicating the corresponding device, a communication type (communication protocol) of communication performed by the device, a device-specific ID (such as a MAC address), a device IP address, a device type (device type), and a device power supply. ON / OFF information, which is either an ON value indicating that is ON or an OFF value indicating OFF, and setting information (setting value and setting file name) for setting the device.

  FIG. 3 is a diagram showing a sequence when a new device is connected not for exchanging with another connected device.

S1: A new device is connected to the gateway device (device management device) and activated.
S2: The device communication unit 4 periodically checks (polls) the status of each device.
S3: The device communication unit 4 receives a response to the status confirmation from the new device, and further acquires the device unique ID, IP address, device type, on / off information (on value), and setting information from the device.

S5: The device communication unit 4 transmits device information including the acquired information to the information management unit 3, and makes a request for updating the device information.
S7: The information management unit 3 transmits the acquired device information to the information management unit 3 and makes a device information update request.
S9: Since the information storage unit 2 does not store device information including the same device unique ID as the device unique ID in the received device information, the information storage unit 2 responds to the information management unit 3 that there is no corresponding device unique ID.

S11: The information management unit 3 includes a new device ID in the acquired device information, transmits the device information to the information management unit 3, and makes a device information update request.
S13: The information storage unit 2 stores device information including a new device ID, and notifies the information management unit 3 of completion.
S21: The information management unit 3 determines whether a new device is connected for exchange with another connected device. Here, it is determined that it is not for replacement.
S23: The information management unit 3 transmits the determination result to the new device via the device communication unit 4.

S31: Although omitted in FIG. 1, the operation terminal is operated by, for example, a user who uses the device, and the user's operation causes the information management unit 3 to send the device ID of the new device, the gateway device An ID and address confirmation request is transmitted.
S33, S35: The information management unit 3 acquires the device ID of the new device from the information storage unit 2, and notifies the operation terminal of the device ID, the gateway device ID, and the address.

S37: The operating terminal sends the acquired device ID, gateway device ID and address to the service server, and makes a registration request.
S41, S43: The service server stores the acquired device ID, gateway device ID and address, and notifies the operation terminal of completion.

  4 and 5 are diagrams showing the first half and the second half of a sequence when a new device is connected for exchange with another connected device, respectively.

As for the device 01, it is assumed that device information is stored in the information storage unit 2 and registration in the service server is also completed.
S101: A new device 02 is connected to the gateway device and activated.
S103: The device 01, which is another device, stops operating.
S111: The device communication unit 4 periodically checks (polls) the status of each device.

S113: The device communication unit 4 cannot receive a response to the status confirmation from the stopped device 01.
S115: The device communication unit 4 requests the information management unit 3 to update the device information of the device 01 that has not received a response.
S117: The information management unit 3 requests the information storage unit 2 to update the device information of the device 01 that has not received a response.

S119: The information storage unit 2 changes the on value to the off value in the device information of the device 01 that has not received a response.
S121: The information storage unit 2 notifies the information management unit 3 and the information management unit 3 notifies the device communication unit 4 of the update completion.
S3: Similar to the description of FIG. 3, the device communication unit 4 receives a response to the status confirmation from the new device 02, and further receives a device unique ID, IP address, device type, on / off information (on value) from the device 02. Get setting information. Henceforth, duplication description is abbreviate | omitted about S5-S13.

S21: The information management unit 3 determines whether or not the new device 02 is connected for exchange with another connected device. Here, it is assumed that it is determined to be for exchange with another device 01.
S51: The information management unit 3 notifies the information storage unit 2 that the new device 02 has been connected for exchange with another device 01 that has already been connected, and makes a device information update request.

S53: The information storage unit 2 reads the device ID and setting information from the device information of the other device 01, writes the device ID and setting information of the new device 02 as the device ID and setting information of the new device 02, and stores them in the information management unit 3. Send completion. When the device ID and setting information are already included in the device information of the new device 02, it is overwritten.
S53: Also, the information storage unit 2 transmits the setting information to the information management unit 3, and notifies the update completion.

S55: The information management unit 3 transmits the acquired setting information to the device communication unit 4 and requests a setting for a new device 02.
S57: The device communication unit 4 transmits the setting value and setting file name file of the acquired setting information to the new device 02, and requests reflection to the setting.
S59, S61: The new device 02 reflects the setting in itself by using the acquired setting value and file, and notifies the information management unit 3 of the completion of the setting reflection via the device communication unit 4.

S63: Upon completion of the setting reflection, the information management unit 3 transmits a request for deleting the device information of the other connected devices 01 to the information storage unit 2.
S65: The information storage unit 2 deletes the device information of the other device 01 in response to the deletion request.

FIG. 6 is a diagram showing a sequence when a device is controlled from the service server.
S201: The service server designates the ID and address of the gateway device in which the device management apparatus is configured, and controls the service communication unit 1 of the device management apparatus and the device ID and control of the device that has been replaced with a new device and stopped. Send instructions.
S203: The service communication unit 1 transmits a device ID to the information storage unit 2 via the information management unit 3, and requests a device unique ID and an IP address.

S205, S207: The information storage unit 2 acquires the device ID, searches for device information including the device ID, reads the device unique ID and the IP address from the device information, that is, the device information of the new device, and sets the information management unit 3 To the service communication unit 1.
S209: The service communication unit 1 acquires a device unique ID and an IP address, and transmits a control command, a device unique ID, and an IP address to the device communication unit 4.
S211: The device communication unit 4 acquires a control command, a device unique ID and an IP address, designates the device unique ID and the IP address, and transmits the control command to the new device.

  S213, S215: The new device performs an operation based on the control command, and notifies the service server of the operation completion via the device communication unit 4 and the service communication unit 1.

FIG. 7 is a diagram schematically illustrating the movement in the device management apparatus when a new device is connected for exchange with another connected device and the new device is controlled.
The user who uses the device connects the device 01 with the device ID “dev01” to the gateway device (device management device), and removes the device 02 with the device ID “dev02” from the gateway device (device management device).
In this way, the information management unit 3 determines whether the new device is connected for exchange with another connected device.

S51: If the information management unit 3 determines that the device 02 is connected for exchange with the device 01, the information management unit 3 issues a device information update request to the information storage unit 2.
S53: The information storage unit 2 reads the device ID “dev01” from the device information of the device 01, and rewrites the device ID “dev02” included in the device information of the device 02 with the device ID “dev01”.
S201: The service server B transmits the device ID “dev01” of the removed device 01 and a control command to the service communication unit 1 of the device management apparatus.

S203: The service communication unit 1 transmits the device ID “dev01” to the information storage unit 2.
S205: The information storage unit 2 reads the device unique ID and the IP address from the device information including the device ID “dev01”.
S211: The device communication unit 4 specifies a device unique ID and an IP address, and transmits a control command to the new device 02.

  Therefore, a new device can be controlled even if the service server does not recognize the replacement of the device.

FIG. 8 is a detailed flowchart of the determination performed in step S21.
S2101: The information management unit 3 first reads a device type from device information of a new device, and determines whether there is other device information including the same device type and an off value.
S2103: If it is determined that there is corresponding device information (S2101: YES), the information management unit 3 assigns a serial number (0, 1, 2,...) To the corresponding device information.

S2105: Next, the information management unit 3 initializes the variable i corresponding to the serial number to 0, and writes the total number of corresponding device information in the variable N.
S2107: Next, the information management unit 3 determines whether or not the new device is connected for exchange with a device (other device) corresponding to the device information assigned the same serial number as the variable i. To do. A detailed determination method will be described later.
S2109, S2111: Next, the information management unit 3 adds 1 to the variable i, determines whether or not the variable i matches the variable N, and if not (S2111: NO), returns to step S2107.

S2113: If the information management unit 3 matches (S2111: YES), the information management unit 3 determines whether there is another device determined to be connected for replacement in step S2107.
S2115: The information management unit 3 determines that there is no other device determined to be connected for replacement (S2113: NO), or includes the same device type and off value as the device type of the new device. If it is determined that there is no device information (S2101: NO), it is determined that the new device is connected, not for exchange with another device, and the process of step S21 is completed.

S2117: If it is determined that there is another device determined to be connected for replacement (S2113: YES), the information management unit 3 determines whether the number of corresponding devices is 1 or 2 or more.
S2119: If it is determined that the number of corresponding devices is 2 or more, the information management unit 3 narrows down the number of devices to one using the new device and the feature quantities relating to power on / off of the corresponding device.

  S2119: The information management unit 3 determines that the new device is connected for replacement with the corresponding device when the number of the corresponding devices is determined to be 1 or when the number of devices is narrowed down to one. Determination is made, and the process of step S21 is completed.

FIG. 9 is an explanatory diagram of the first embodiment relating to the determination performed in step S2107.
The information storage unit 2 stores on / off history information, which is history information of on / off information, for each device. The on / off history information includes, for example, on / off information for each time interval t1, t2,. The time length of each time section is, for example, 10 minutes. The on / off information is set to an on value (ON) if the power supply is always on during the corresponding time interval, and is set to an off value (OFF) if the power is not always on.

For example, all the on / off information in the on / off history information of the device 01 is an on value, that is, the device 01 is a device that is used all day.
On the other hand, the ON / OFF history information of the device 02 includes an ON value and an OFF value, that is, it can be understood that the device 02 is not used all day.

Therefore, for example, if the target device is the device 01, the information management unit 3 obtains the power-on time length (24 hours) during which the device 01 is powered from the on-off history information.
On the other hand, for example, if the target device is the device 02, the information management unit 3 obtains the power-on time length (for example, 12 hours) during which the power of the device 02 is on from the on-off history information.

The information management unit 3 determines whether or not the power-on time length is longer than a preset threshold (for example, 23 hours). If the power-on time length is longer, the device information of such a device includes on-off information that is an off value. It is determined whether or not.
For example, since the device information of the device 01 in the figure includes an off value, if the target device is the device 01, the information management unit 3 connects a new device for replacement with the device 01 in step S2107. It is determined that

FIG. 10 is an explanatory diagram of the second embodiment relating to the determination made in step S2107.
For example, based on the on / off history information as shown in FIG. 9, the longest value of the power-off time length during which the power is turned off for each device is recorded in the information storage unit 2 and updated. Is recorded.

  The information management unit 3 connects the new device for exchange with the other device at the timing of step S2017, that is, when the longest value of the other device is updated after the new device is connected. It is determined that

In the figure, for the connected devices 01 and 02, the longest value of the power-off time length is recorded from the device information through the on / off history information as shown in FIG.
Before the connection of the device 03, it is assumed that the longest value of the device 01 is 12 hours and the longest value of the device 02 is 8 hours.
After the connection of the device 03, it is assumed that the longest value of the device 01 remains 12 hours and the longest value of the device 02 is updated to 8 hours and 1 minute.
In this case, the information management unit 3 determines that the new device 03 has been connected for exchange with another device 02.

FIG. 11 is an explanatory diagram of the third embodiment relating to the determination performed in step S2107.
The information storage unit 2 stores on / off history information as shown in FIG. 9 over the past plural days. The time length of each time section is, for example, 1 hour.

For each time section, the information management unit 3 sets the ratio Pon of the number of days that is on to the total number of days that the power of other devices is turned on and the number of days that are off in the time section. Ask based on.
Next, if the ratio Pon of the continuous time intervals is higher than the predetermined threshold value THon, the information management unit 3 determines the number of days when the power of the other device is turned on for the continuous time intervals. And the ratio Poff of the number of days off with respect to the total number of days off.

  Next, if the product of all the ratios Poff is equal to or less than the predetermined threshold value THoff, the information management unit 3 determines that a new device is connected for exchange with the other device.

  In the figure, the ratio Pon (15) in the 1-hour time interval before and after 15:00, the ratio Pon (16) in the 1-hour time interval before and after 16:00, and the 1-hour time interval before and after 17:00 The ratio Pon (17), the ratio Pon (18) in the one-hour time period before and after 18:00, and the ratio Pon (19) in the one-hour time period before and after 19:00 are higher than the threshold THon.

  Therefore, the information management unit 3 determines the ratio Poff (15) in the time interval of 1 hour before and after 15:00, that is, (1-Pon (15)), the ratio Poff in the time interval of 1 hour before and after 16:00. (16), that is, (1-Pon (16)), the ratio Poff (17) in the time interval of 1 hour before and after 17:00, that is, (1-Pon (17)), 1 hour before and after 18:00 The ratio Poff (18) in the time interval, that is, (1-Pon (18)), and the ratio Poff (19) in the time interval of 1 hour before and after 19:00, that is, (1-Pon (19)) are obtained.

  Next, the information management unit 3 calculates the product Poff (15-19) of all the ratios Poff, that is, (1-Pon (15)) (1-Pon (16)) (1-Pon (17)) (1- Pon (18)) (1-Pon (19)) is obtained, and if Poff (15-19) is less than or equal to a threshold THoff (for example, 0.003), it is determined that a new device has been connected for exchange with the other device. judge.

FIG. 12 is an explanatory diagram of the fourth embodiment relating to the determination made in step S2107.
The information storage unit 2 stores on / off history information as shown in the figure over the past plural days. The time length of each time section is, for example, 1 hour.

  For each time interval, the information management unit 3 is the number of days that the device corresponding to the device information assigned the same serial number as the variable i in the time interval (hereinafter referred to as the first other device) is turned on. The ratio P of the total number of days in which the power of the first other device is on and the power of the second other device that is not the first other device is on in the time interval for Determine based on historical information.

Next, the information management unit 3 has the ratio P of one of the time intervals as 1 and the ON / OFF information that is an ON value is included in the device information of the second other device, and the OFF value It is determined whether or not certain on / off information is included in the device information of the first other device.
The information management unit 3 includes the ratio P of 1, the on / off information that is an on value is included in the device information of the second other device, and the on / off information that is an off value is the first other If it is included in the device information of the first device, it is determined that the new device is connected for exchange with the first other device.

  Note that the information management unit 3 performs the same process for another second other device, and if it is determined that one of the second other devices is connected for replacement in the process of any second other device, a new one is created. It is determined that the device is connected for exchange with the first other device.

For example, the information management unit 3 sets the first other device as the device 02 and the second other device as the device 01, and obtains the ratio P with respect to an arbitrary time interval tk using the formula in the figure.
Next, the information management unit 3 includes the ratio P of 1, ON / OFF information that is an ON value is included in the device information of the device 01, and ON / OFF information that is an OFF value is included in the device information of the device 02. If so, it is determined that a new device is connected for exchange with the device 02.

FIG. 13 is an explanatory diagram of an example according to the determination performed in step S2119.
For each new device and a plurality of other devices (devices determined to be exchanged with the new device in step S2107), the information management unit 3 sets the feature amount related to power on / off of each device. Determine based on historical information.
Next, the information management unit 3 obtains the difference between the feature amount of the other device and the feature amount of the new device, and obtains the minimum value of the difference.

Next, the information management unit 3 determines that the new device is connected for exchange with another device corresponding to the minimum value. That is, a plurality of other devices are narrowed down to one other device corresponding to the minimum value.
The on / off history information is, for example, accumulated device information before update every time the device information is updated.

In the figure, a new device is a device 03, and a plurality of other devices are devices 01 and 02.
The information management unit 3 obtains, for the devices 01, 02, 03, the time when the power is first turned on in the day as the first feature amount.
In addition, the information management unit 3 obtains the time when the power is turned off at the end of the day for the devices 01, 02, and 03 as the second feature amount.
In addition, the information management unit 3 obtains the frequency of switching between on and off in the day for the devices 01, 02, and 03 as the third feature amount.
In addition, the information management unit 3 obtains, for the devices 01, 02, 03, the length of time during which the power is on during the day as the fourth feature amount.

Next, the information management unit 3 divides the corresponding feature amount by the maximum value of the first feature amount, that is, normalizes, for each first feature amount.
The information management unit 3 also normalizes the second, third, and fourth feature amounts.

  Next, the information management unit 3 obtains a difference from the first feature value of the device 03 for each of the first feature values of the devices 01 and 02. The information management unit 3 also obtains differences for the second, third, and fourth feature amounts.

Next, the information management unit 3 obtains the total value of the differences obtained for the device 01. The information management unit 3 also obtains a total difference value for the device 02.
If the total value obtained for the device 02 is smaller than the total value obtained for the device 01, the information management unit 3 determines that a new device 03 is connected for exchange with the device 02.

  As described above, according to the device management apparatus according to the present embodiment, device information including on / off information that is either an on value indicating that the power of the device is on or an off value indicating that the device is off. Is stored for each device, and if a new device is connected to a device management apparatus (for example, a gateway apparatus), connection is made using on / off information of the device information stored in the information storage section 2 A replacement determination unit (S21) for determining whether or not a new device is connected for replacement with another device that has already been completed; and if it is determined for replacement, the device of the other device in the information storage unit 2 Information writing means (S53) for reading at least a part of information other than the on / off information from the information and writing it in the device information of the new device Thus, it is possible to automatically determine whether the new device is for replacement with an existing device (another device), and writing the device information information of the other device into the device information of the new device it can.

  Specifically, the information storage unit 2 stores on / off history information that is history information of on / off information for each device, and the exchange determination unit performs determination based on the on / off history information.

  More specifically, as in the first embodiment, for example, the replacement determination unit obtains the power on time length during which the power of the other device is on based on the on / off history information of the other device, and If the time length is longer than a predetermined threshold and the on / off information, which is an off value, is included in the device information of the other device, it is determined that a new device is connected for exchange with the other device.

  Alternatively, as in the second embodiment, for example, the longest value of the power-off time length during which the power of the device is off is recorded for each device based on the on-off history information of the device. If the longest value of the other device is updated after the new device is connected, it is determined that the new device is connected for exchange with the other device.

  Or, for example, as in the third embodiment, the replacement determination means, for each time interval constituting one day, for the total of the number of days that the power of other devices was turned on and the number of days that were off in the time interval. The ratio (Pon) of the number of days that have been turned on is obtained based on the on / off history information of the device, and if each ratio (Pon) of consecutive time intervals is higher than a predetermined threshold (THon), for each consecutive time interval The ratio of the number of days off (Poff) to the total number of days the other device was turned on and the number of days off was calculated for the time interval, and the product of all the ratios (Poff) If it is equal to or less than the threshold (THoff), it is determined that a new device is connected for exchange with the other device.

  Alternatively, for example, as in the fourth embodiment, the replacement determination unit performs, for each time interval constituting one day, the first time in the time interval corresponding to the number of days during which the power of the first other device is on. The ratio (P) of the number of days when the power of one other device is on and the power of the second other device is on is obtained based on the on / off history information of each device, and the ratio (P) is 1 And ON / OFF information that is an ON value is included in the device information of the second other device, and ON / OFF information that is an OFF value is included in the device information of the first other device, It is determined that a new device has been connected for exchange with the first other device.

  Further, as described with reference to FIG. 13, the replacement determination unit obtains a feature amount related to power on / off for each of the new device and a plurality of other devices based on the on / off history information of each device. For each feature quantity of the device, a difference from the feature quantity of the new device is obtained, a minimum value of the difference is obtained, and it is determined that the new device is connected for exchange with another device corresponding to the minimum value. .

(Modification of this embodiment)
Next, a modification of the present embodiment will be described. In the description so far, when a plurality of determination methods are used and there are a plurality of devices determined as replacement targets, the number of devices is narrowed down to one, but the following determination may be performed. Since other processes are the same as those described so far, the duplicate description is omitted.

FIG. 14 is a flowchart of determination in a modification of the present embodiment.
S101: The information management unit 3 selects one or more from the determination methods of the first, third, and fourth examples in step S2107. Details will be described later.
S103: The information management unit 3 executes the determination method selected in step S101 and the determination method of the second example in step S2107 in parallel.
S105: The information management unit 3 determines whether or not a determination result is obtained by determination by any determination method.

S107: If the determination result is obtained by any one of the determination methods (S105: YES), the information management unit 3 adopts the determination result obtained earliest and ends the process.
S109: On the other hand, if the determination result is not obtained by any of the determination methods (S105: NO), the information management unit 3 outputs to the screen or the like that device information or on / off history information needs to be updated, and performs processing. Finish.

FIG. 15 is a detailed flowchart of the determination method selection performed in step S101.
S1011: The information management unit 3 determines whether or not all on / off information in the on / off history information of other devices to be determined is an on value.
S1012: The information management unit 3 selects the determination method of the first embodiment if all the on / off information in the on / off history information of other devices to be determined are on values (S1011: YES).

S1013: The information management unit 3 determines whether the on / off information in the on / off history information of other devices to be determined is not all on values (S1011: NO) or after any step S1012 in any continuous time interval. It is determined whether or not the ratio Pon of other target devices is higher than the threshold value THon.
S1014: If the ratios Pon are all higher than the threshold THon (S1013: YES), the information management unit 3 selects the determination method of the third embodiment in addition to the determination methods selected so far.

  S1015: The information management unit 3 determines that if any ratio Pon is equal to or less than the threshold value THon (S1013: NO) or after step S1014, the on / off information of any time section in the on / off history information of another device to be determined is It is determined whether or not the on / off information of the same time interval in the on / off history information of the new device is the on value.

S1016: The information management unit 3 sets the on / off information of any time section in the on / off history information of another device to be determined to be an on value, and the on / off information of the same time section in the on / off history information of the new device. Is an ON value (S1015: YES), in addition to the determination method selected so far, the determination method of the fourth embodiment is selected, and the process ends.
If the information management unit 3 determines NO in step S1015, the information management unit 3 ends the process.

  As described above, according to the device management apparatus according to the modification, the replacement determination unit performs replacement determination using at least two of the determination methods of the first, second, third, and fourth embodiments. The determination result obtained earliest is adopted.

  A computer program for causing a computer to function as the device management apparatus according to the present embodiment or the modification can be recorded on a computer-readable recording medium such as a semiconductor memory, a magnetic disk, an optical disk, a magneto-optical disk, or a magnetic tape. Further, it can be widely distributed by being transmitted through a communication network such as the Internet.

DESCRIPTION OF SYMBOLS 1 Service communication part 2 Information storage part 3 Information management part 4 Device communication part A, B, Service server 01, 02, 03 Device

Claims (8)

A device management device that manages devices connected to the gateway device,
An information storage unit that stores device information including on / off information that is either an on value indicating that the power of the device is on or an off value indicating that the device is off;
If a new device is connected to the gateway device, whether the new device is connected for exchange with another connected device using the on / off information of the device information stored in the information storage unit. Exchange determination means for determining whether or not,
If it is determined to be exchanged, the information storage unit includes information writing means for reading at least a part of information other than the on / off information from the device information of the other device in the information storage unit and writing the information into the device information of the new device. A device management apparatus. The device management apparatus according to claim 1,
The information storage unit
On-off history information that is history information of the on-off information is stored for each device,
The device management apparatus, wherein the replacement determination unit performs determination based on the on / off history information. The device management apparatus according to claim 2,
The replacement determination means includes
Based on the on / off history information of the other device, the power on time length during which the power of the other device is on is obtained.
If the power-on time length is longer than a predetermined threshold and the on / off information that is an off value is included in the device information of the other device,
It is determined that the new device is connected for exchange with the other device. The device management apparatus according to claim 2,
Each device is configured to record the longest power off time length during which the power of the device is off based on the on / off history information of the device,
The replacement determination means includes
If the longest value of another device is updated after the new device is connected,
It is determined that the new device is connected for exchange with the other device. The device management apparatus according to claim 2,
The replacement determination means includes
For each time interval constituting one day, the ratio of the number of days that were turned on (Pon) to the total number of days that the other device was turned on and the number of days that were turned off in that time interval was the on / off history of the device. Based on information, if each ratio (Pon) of consecutive time intervals is higher than a predetermined threshold (THon),
For each successive time interval, the ratio of the number of days off (Poff) to the total number of days that the other device was turned on and the number of days off in the time interval was obtained, and all the ratios ( Poff) is less than or equal to a predetermined threshold (THoff)
It is determined that the new device is connected for exchange with the other device. The device management apparatus according to claim 2,
The replacement determination means includes
For each time interval constituting one day, the power of the first other device is on and the second other time in the time interval corresponding to the number of days that the power of the first other device is on in the time interval. Based on the on / off history information of each device, the ratio (P) of days when the power of the device was turned on
The ratio (P) is 1, the on / off information that is an on value is included in the device information of the second other device, and the on / off information that is an off value is the information of the first other device. If included in the device information,
It is determined that the new device is connected for exchange with the first other device. The device management apparatus according to claim 2,
The replacement determination means includes
For each of the new device and a plurality of other devices, a feature amount related to power on / off is obtained based on on / off history information of each device,
For each feature quantity of the other device, obtain a difference from the feature quantity of the new device,
Find the minimum value of the difference,
It is determined that the new device is connected for exchange with another device corresponding to the minimum value. The device management apparatus according to claim 1,
The replacement determination means includes
A device management apparatus characterized in that an exchange determination is performed using at least two of the determination methods according to claim 3, 4, 5, and 6, and a determination result obtained earliest is adopted.

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