JP5010653B2 - Power control device, power control method, power control program - Google Patents

Description

  The present invention relates to a power supply control device, a power supply control method, and a power supply control program for electronic devices connected to a network. In particular, in a network in which a small number of users such as a home network manage a large number of electronic devices, The present invention relates to a technology for controlling power consumption.

  In recent years, as the types and number of electronic devices connected to a small network such as a home network increase, it has become difficult for a user to manage all electronic devices alone. In other words, after the user turns on the power of one computer and searches for information, etc., the user starts using another computer, leaving the one computer for a long time, and wasting power. May end up.

  Therefore, it is known to turn off the power of the monitor of the personal computer or stop the power supply to the hard disk under the control of the OS (Operating System) according to the fact that the electronic device such as the personal computer is not used. (See “Non-Patent Document 1” below.)

  In addition, it is determined that the printer has not been used for a predetermined time by checking the usage status of the printer by the client PC in the network or by checking predetermined packets such as PING and ICMP. If it is determined that there is no such printer, a printer that shuts off the printer power supply (including a shared device (hard disk device) in Patent Document 2) is known (see “Patent Document 1”, “Patent Document 2”, “ See Patent Document 3).

JP 2004-206332 A JP 2000-293272 A JP 2000-172474 A

Microsoft Corporation, “Power Management of Windows (registered trademark) XP”, [online], March 25, 2002, [Search July 28, 2009], Internet <URL: http: // www. Microsoft. com / japan / windows (registered trademark) xp / using / setup / learnmore / russel — 02march25. mspx>

  However, in the method of Non-Patent Document 1, the range in which the consumed power can be managed is limited to the electronic device in which the OS is installed, and a plurality of electronic devices in the network cannot be managed.

  Furthermore, in the methods disclosed in Patent Documents 1 to 3, power consumption can be managed for a shared device such as a printer in a network, but power management is performed without depending on the function and type of the electronic device. This is not expected. In addition, the printer power supply is automatically shut off regardless of the administrator's intention, which may cause inconvenience. For example, when the printer ink is being exchanged and the use request is not received from the client PC, it may not always be appropriate to shut off the power just because it is unused.

  The present invention detects an electronic device that is unused even though the power is continuously turned on for a predetermined time, notifies an alert where a user can be assumed, and disconnects the power of the electronic device. It is an object of the present invention to provide a power supply control apparatus, a power supply control method, and a power supply control program that execute the above-described or guides disconnection.

  (1) A power supply control device that manages the power supply of an electronic device connected to a network, and detects a start-up of the power supply of the electronic device and starts a measurement of a start-up time for the electronic device; Input operation receiving means for receiving an input operation for the electronic device via a network, and when the input operation is received, the activation time of the electronic device is reset, and the electronic device and the user flag that have received the input operation And a user flag storage means for storing the information in association with the electronic device in which the user flag is stored by the user flag storage means when the activation time reaches a predetermined time. And an alert transmission means for transmitting an alert about the reached electronic device.

  According to the invention according to (1), in managing the usage status of electronic devices in the network, the power activation of the electronic device is detected, the activation time is set as the start of measurement, and there is an input operation from the user during the activation time. If this happens, reset the startup time. A user flag is stored in association with the electronic device that has undergone this input operation, and when the activation time of a certain electronic device reaches a predetermined time, the electronic device that stores the user flag is stored. Then, an alert is transmitted for an electronic device whose activation time has reached a predetermined time.

  Therefore, although it is possible to notify the user of an alert about an electronic device that is assumed not to be used by the user even though the power is kept on for a predetermined time, the place where the alert is notified is Since it is transmitted to the electronic device on which the user has performed the input operation, an alert can be output to an appropriate place where it can be assumed that the user is present without providing user detection means such as a sensor.

  (2) The power supply control apparatus according to (1), wherein the alert transmission unit transmits a command to turn off the power to the electronic device whose activation time has reached a predetermined time. .

  According to the invention according to (2), the power supply control device transmits a command to turn off the power to the electronic device whose activation time has reached a predetermined time. Therefore, the user turns off the power of the corresponding electronic device without going to the place where the electronic device is assumed not to be used by the user even though the power is kept on for a predetermined time. can do.

  (3) In the power supply control device according to (1) or (2), the user flag storage unit may store an electronic device different from an electronic device associated with the user flag storage unit after storing the user flag. When an input operation is received from the device, the activation time of the different electronic device is reset, the different electronic device and the user flag are stored in association with each other, and the alert transmission unit selects the different electronic device. Power supply control device that sends alerts.

  According to the invention according to (3), when the user flag storage means receives an input operation from an electronic device different from the electronic device associated with the user flag storage means after storing the user flag, the user flag storage means is different. The activation time of the electronic device is reset, the different electronic device and the user flag are stored in association with each other, and the alert transmission unit selects the different electronic device and transmits an alert.

  Therefore, when an input operation is received from a plurality of electronic devices, the user changes the usage from one electronic device to another electronic device in order to select the electronic device that has stored the user flag and notify the alert. Even so, the alert can be output to the most appropriate electronic device that the user can recognize the alert.

  (4) The power supply control device according to (3), wherein the alert transmission unit selects an electronic device having an output function from the electronic devices that have received the input operation, and transmits the alert. apparatus.

  According to the invention according to (4), in the power supply control device, the alert transmission unit selects an electronic device having an output function from the electronic devices that have received the input operation, and notifies the alert. Therefore, in the first place, if an electronic device that does not have an output function exists in the network, this electronic device cannot output an alert to the user, so the power supply control device selects an electronic device that can output the alert. To alert you.

  (5) In the power supply control device according to any one of (1) to (4), when the user flag storage unit does not receive an input operation from the electronic device, the alert transmission unit includes: A power supply control device that transmits the alert to a mobile phone that is communicably connected.

  According to the invention according to (5), when the power management apparatus does not receive the input operation from the electronic device, the power management apparatus transmits the alert to the mobile phone connected so as to be communicable. Even if it cannot be determined based on the alert, the alert can be transmitted to a device that is easy for the user to notice the alert.

  (6) A power supply control method in which a power supply control device manages the power supply of an electronic device connected to a network, the activation time detecting the activation of the power supply of the electronic device and starting the measurement of the activation time for the electronic device A measurement step, an input operation receiving step for receiving an input operation for the electronic device via a network, and, when the input operation is received, resetting the activation time of the electronic device that has received the input operation, A user flag storing step for storing an electronic device that has received an input operation and a user flag in association with each other, and an electronic device in which the user flag is stored in the user flag storing step when the activation time reaches a predetermined time. An alert transmission step for transmitting an alert for an electronic device whose start-up time has reached a predetermined time. Power supply control how.

  According to the invention according to (6), in managing the usage status of the electronic devices in the network, the power activation of the electronic device is detected, the activation time is started, and there is an input operation from the user during the activation time. If this happens, reset the startup time. A user flag is stored in association with the electronic device that has undergone this input operation, and when the activation time of a certain electronic device reaches a predetermined time, the electronic device that stores the user flag is stored. Then, an alert about the electronic device whose activation time has reached a predetermined time is notified.

  Therefore, although it is possible to notify the user of an alert about an electronic device that is assumed not to be used by the user even though the power is kept on for a predetermined time, the place where the alert is output is Since the output is performed with respect to the electronic device on which the user has performed the input operation, an alert can be transmitted to a reasonable place where it can be assumed that the user is present without providing user detection means such as a sensor.

  (7) A startup time measuring step of detecting a startup of the power supply of the electronic device in a power supply control device, which is a computer that controls the power supply of the electronic device connected to the network, and starting a startup time measurement for the electronic device; An input operation receiving step for receiving an input operation on the electronic device via a network; when the input operation is received, the activation time of the electronic device that has received the input operation is reset, and the input operation is received A user flag storing step for storing an electronic device and a user flag in association with each other, and when the activation time reaches a predetermined time, the activation for the electronic device in which the user flag is stored by the user flag storage step An alert sending step for sending an alert about an electronic device whose time has reached a predetermined time is executed. Because of the power supply control program.

  According to the invention according to (7), in managing the usage status of the electronic devices in the network, the power activation of the electronic device is detected, the activation time is started, and there is an input operation from the user during the activation time. In the case of an error, the activation time for the electronic device that has been input is reset. A user flag is stored in association with the electronic device that has undergone this input operation, and when the activation time of a certain electronic device reaches a predetermined time, the electronic device that stores the user flag is stored. Then, an alert about the electronic device whose activation time has reached a predetermined time is notified.

  Therefore, although it is possible to notify the user of an alert about an electronic device that is assumed not to be used by the user even though the power is kept on for a predetermined time, the place where the alert is output is Since it is transmitted to the electronic device on which the user has performed the input operation, an alert can be output to an appropriate place where it can be assumed that the user is present without providing user detection means such as a sensor.

  According to the present invention, an electronic device in the network that is not used even though the power is continuously turned on for a predetermined time is detected, and the power is turned on and left unattended. It is possible to provide a power supply control device, a power supply control method, and a power supply control program for notifying the user and executing or instructing the power supply of the electronic device to be cut off.

It is a figure which shows the whole structure of the power supply control management system 1 in 1st embodiment, 2nd embodiment, and 3rd embodiment of this invention. It is a block diagram which shows the function structure of the power supply control apparatus 50 and the electronic device 10 in 1st embodiment, 2nd embodiment, and 3rd embodiment of this invention. It is a figure which shows the processing flow of 1st embodiment of this invention. It is a figure which shows the starting time and user flag management table in 1st embodiment, 2nd embodiment, and 3rd embodiment of this invention. It is a figure which shows the processing flow of 2nd embodiment of this invention. It is a figure which shows the electronic device management table of 3rd embodiment of this invention.

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

[Overview]
The outline of the power supply control management system 1 according to the present invention will be described with reference to FIG. FIG. 1 is a diagram showing an overall configuration of a power supply control management system 1.

  The power supply control management system 1 includes a power supply control device 50 and electronic devices 10-a to 10-d (hereinafter, “electronic devices 10”). The power supply control device 50 and each electronic device 10 communicate with each other by wire or wirelessly. Connected as possible. The power supply control management system 1 is a system that can communicate over a network realized by a local area network, a home network, or the like. Further, the power supply control device 50 may be connected to a WAN (Wide Area Network) and connected to the electronic device 10 via a public line network to control the power supply of the electronic device 10.

  The power control device 50 is an information processing device that performs power control of the electronic device 10. The power supply control device 50 may be a computer, a router, a gateway, an STB (Set Top Box), a home server, or a personal computer. The power supply control device 50 includes a central processing unit (CPU), a random access memory (RAM), a read only memory (ROM), and the like as a control unit, and either a hard disk or an SSD (Solid State Drive) as a storage unit. The communication unit includes a wired / wireless compatible Ethernet (registered trademark) board, a Bluetooth (registered trademark) compatible device, and the like.

  The above-mentioned means may be implemented as a module executed on the power supply control device 50 based on the OSGi platform.

  The electronic device 10 is a home / business electronic device that has a network function capable of communicating with the power supply control device 50 and operates when supplied with power, such as a personal computer, a notebook computer, a television, an audio component, and a printer. This includes not only information appliances but also white goods such as refrigerators, washing machines, dishwashers / dryers, electric fans, air conditioners, electric stoves, rice cookers, and microwave ovens, and electric lighting. The electronic device 10 includes a central processing unit (CPU), a random access memory (RAM), a read only memory (ROM), and the like as a control unit, and a hard disk, an SSD (Solid State Drive), or both as a storage unit. Etc., and the communication unit includes a wired / wireless compatible Ethernet (registered trademark) board, a device for Bluetooth (registered trademark), and the like.

  The electronic device 10 may include an output unit such as a display unit having a display output function such as a display, an audio output unit having a voice output function such as a speaker, etc., and as an input unit, a keyboard, a mouse, an input button, A remote control operation transmission / reception unit, a microphone for voice input, and the like may be provided.

[Function configuration]
With reference to FIG. 2, the functional configuration of the power supply control device 50 and the electronic device 10 (electronic devices 10-a, 10-c) will be described.

  The power supply control device 50 reads a predetermined program (library) and data, and is executed by the control unit, so that the startup time measuring unit 51, the input operation receiving unit 52, and the user flag storage unit together with the storage unit and the communication unit. 53 and the alert transmission means 54 are realized.

  The electronic device 10 reads a predetermined program (library) and data, and is executed by the control unit, so that the activation notification unit 11, the input operation reception unit 12, the input operation transmission unit 13, together with the storage unit and the communication unit, The alert output means 14 is realized.

[First embodiment: Alert notification flow]
With reference to FIG. 3, a processing procedure executed by each component of FIG. 2 will be described.

  The activation notification unit 11c of the electronic device 10-c transmits a packet such as a broadcast packet to the power supply control device 50 (step S01). That is, the activation notification unit 11c of the electronic device 10-c transmits a broadcasted packet such as ARP (Address Resolution Protocol).

  The activation time measuring means 51 of the power supply control device 50 receives the broadcasted packet, detects the activation of the electronic device 10-c, and starts measuring the activation time (step S02).

  Similarly, the activation notification unit 11a of the electronic device 10-a transmits a packet such as a broadcast packet to the power supply control device 50 (step S03). That is, the activation notification unit 11a of the electronic device 10-a transmits a broadcasted packet such as ARP (Address Resolution Protocol).

  The activation time measuring means 51 of the power supply control device 50 receives the broadcasted packet and starts measuring the activation time of the electronic device 10-a (step S04).

  The activation time is stored in the power supply control device 50 as the activation time / user flag management table of FIG.

  Next, the input operation accepting unit 12a of the electronic device 10-a accepts the user's input operation, and a signal indicating that the input operation transmitting unit 13a accepts the input operation is sent from the electronic device 10-a to the power control device. 50 (step S10).

  The input operation for the input operation accepting unit 12a may be a keyboard input operation, a mouse input operation, a button input operation, a voice input operation, or the like from the user.

  When the input operation receiving unit 52 of the power supply control device 50 receives a signal indicating that the input operation has been received from the electronic device 10-a, the user flag storage unit 53 transmits the electronic device 10-a which is the transmitted electronic device. Is reset to 0 (step S11), and the electronic device 10-a and the user flag are stored in association with each other (step S12).

  The user flag is a flag that is associated with the electronic device 10 that was most recently operated by the user, and that indicates a location where the user is assumed to be present at the installation location of the electronic device 10. The user flag is stored in association with the startup time / user flag management table of FIG.

  Next, the alert transmission means 54 of the power supply control device 50 determines whether or not the activation time of the electronic device 10 has reached an alert notification time (see FIG. 4) preset by the user (step S20). In this embodiment, since the activation time of the electronic device 10-a is reset, the electronic device 10-c first reaches the alert notification time. Therefore, the alert transmission means 54 of the power supply control device 50 determines that the electronic device 10-c has reached the alert notification time (step S20: “YES”).

  If any electronic device 10 determines that the activation time has not reached the alert notification time (step S20: “NO”), the alert transmission unit 54 returns to step S11.

  If the activation time has reached the alert notification time (step S20: “YES”), the alert transmission means 54 is not yet able to check whether the electronic device 10-c is still powered on. A confirmation packet (for example, a PING command) is transmitted to the device 10-c. In order to respond to this confirmation packet, if the electronic device 10-c is powered on, a response packet is transmitted (step S21).

  When the alert transmission unit 54 of the power supply control device 50 receives the response packet from the electronic device 10-c (step S22: “YES”), the alert transmission unit 54 transmits an alert to the electronic device 10-a (step S23). ). The alert transmission means 54 selects the electronic device 10-a associated with the user flag, identifies it as an electronic device that performs alert output, and transmits data related to the alert to the electronic device 10-a.

  When the alert transmission means 54 of the power supply control device 50 has not received a response packet from the electronic device 10-c (step S22: “NO”), the power supply of the electronic device 10-c has already been turned off. And no alert is sent. Therefore, the process returns to step S11.

  The alert transmission means 54 of the power supply control device 50, as an alert, for example, “The power supply of the personal computer (VA-01) is on for about 15 minutes. By turning off this power supply, the power consumption XWh is reduced, "You can reduce your CO2 emissions by Yg."

  The alert output means 14a of the electronic device 10-a receives the alert and outputs the alert as an image (or) sound by the output unit (step S24).

  Further, the alert may include a content “Do you want to turn off the personal computer (VA-01)?”. In this case, when a power-off instruction operation by the user who has visually recognized this alert is received (step S25: YES), the power-supply control apparatus 50 is notified that the power-off instruction has been issued, and the power supply control apparatus 50 As a result of receiving the power-off instruction (step S26: “YES”), the alert transmission means 54 transmits a power-off signal (step S27).

  The electronic device 10-c that has received the power-off signal turns off its own power (step S28). The electronic device 10-c may use a known UPS (uninterruptible power supply) management software or the like as a method for turning off the power in response to an instruction from the power supply control device 50, or by turning off the power using a remote desktop. It may be realized by a method of remotely operating the icon.

[Startup time / user flag management table]
The activation time / user flag management table will be described with reference to FIG. The type of electronic device 10 and the alert notification time may be set by input from the user. About alert notification time, when a user does not input, a default value is set. The type of the electronic device 10 may be automatically specified in the network by the technique disclosed in Japanese Patent Application No. 2009-130552, and the specified type may be input to the activation time / user flag management table.

[Second Embodiment: Alert Notification Flow]
Next, as a second embodiment, a mode in which the power supply control device 50 receives a signal indicating that an input operation has been received from a plurality of electronic devices 10 will be described.

  Steps S50 to S53 are executed by the power supply control device 50 and the electronic devices 10-a and 10-c, similarly to steps S01 to S04 of the first embodiment. And there exists broadcast transmission (step S54) from the electronic device 10-b, and the power supply control apparatus 50 also starts measurement of the starting time of the electronic device 10-b (step S55).

  Next, as in steps S10 to S12 of the first embodiment, the input operation accepting unit 12a of the electronic device 10-a accepts the user's input operation, and the input operation transmitting unit 13a accepts the input operation from the user. A signal indicating that the input operation has been received from the user by the input operation receiving means 52 of the power supply control device 50 (step S60). Upon reception from 10-a, the user flag storage means 53 resets the activation time of the electronic device 10-a, which is the transmitted electronic device, to 0, and associates the electronic device 10-a with the user flag. Store (step S61).

  Similarly, an input operation reception unit 12b (not shown) of the electronic device 10-b receives a user input operation, and a signal indicating that the input operation transmission unit 13b has received the input operation from the user is received by the electronic device. 10-a is transmitted to the power supply control device 50 (step S62), and when the input operation receiving means 52 of the power supply control device 50 receives a signal indicating that the input operation has been received from the user from the electronic device 10-a, the user The flag storage means 53 resets the activation time of the electronic device 10-b, which is the transmitted electronic device, to 0, and stores the electronic device 10-b in association with the user flag (step S63).

  Here, although the electronic device 10-a that was first input is “ON”, the user flag is input from an electronic device 10-b that is different from the electronic device 10-a. The user flag of the device 10-a is “OFF”, and the user flag of the electronic device 10-b is “ON”. In this way, the activation time / user flag management table is rewritten. Since the user has moved from using the electronic device 10-a to using the electronic device 10-b, the user flag can be assumed to be associated with the last input electronic device 10-b. This is because it is appropriate.

  Thereafter, the alert transmission unit 54 of the power supply control device 50 determines whether or not the activation time has reached the alert notification time set in advance by the user (step S70), as in the first embodiment. Through S72, an electronic device for outputting an alert is selected (step S73). That is, the electronic device 10-b that has finally received an input operation from the user is selected, an alert is notified to the electronic device 10-b (step S73), and the alert output unit 14b of the electronic device 10-b This is output (step S74).

  Also in the second embodiment, the power-off process corresponding to steps S25 to S28 of the first embodiment may be executed.

[Third embodiment]
Next, as a third embodiment, a mode in which the power supply control device 50 selects an electronic device 10 having an output function will be described using the electronic device management table of FIG.

  In the third embodiment, the process is performed in the same manner as the alert notification flow of the second embodiment, but the selection process (step S73) of the electronic device 10 that performs the alert notification is different from the second embodiment.

  An electronic device management table that associates whether or not the electronic device 10 has a display output function and an audio output function is stored in the power supply control device 50 in advance for each electronic device 10 by user input. The alert transmission means 54 of the power supply control device 50 selects the electronic device 10 having the display output function or the audio output function based on the electronic device management table, and performs alert notification.

  For example, when combined with the second embodiment, the power supply control device 50 receives input operations from the user as a “notebook personal computer” having a display output function and a “digital television” having no display output function as the electronic device 10. Suppose that a signal indicating that is received. In this case, even if the signal indicating that the input operation has been received is received from the digital television after the signal indicating that the input operation has been received from the notebook computer, Since the television does not have a display output function, an alert is notified only to a laptop computer having a display output function. That is, the power supply control device 50 selects a notebook personal computer without selecting the digital television that has finally received an input operation from the user in selecting an electronic device to be notified of an alert (step S73).

  The electronic device 10 having a display output function is an electronic device 10 having a display and a monitor for displaying an alert as hardware, agent software for displaying the alert as software, a browser, and the like.

  The electronic device 10 having an audio output function is an electronic device 10 having a speaker for outputting an alert as hardware, an audio board, agent software for outputting an alert as software, a browser, an audio driver, and the like.

  Note that in the electronic device 10 having both the display output function and the audio output function, either the display output function or the audio output function may be output, or either one may be output (FIG. 6). (Refer to “Output method”). In addition, when either one of the two functions is not provided, either the other function is output or the electronic device 10 is not output ("digital television" in FIG. 6). These output method settings are preset by the user in the electronic device management table.

[Fourth embodiment]
In the first embodiment, the second embodiment, and the third embodiment described above, a signal indicating that an input operation has been received from the user is transmitted to all electronic devices despite the broadcast transmission (step S03) being performed. 10 (no processing in step S10), a confirmation packet is transmitted to all electronic devices and a response packet is transmitted (step S21). An alert that the power of the electronic device 10 should be turned off. May be transmitted to a mobile phone that is communicably connected to the power supply control device 50.

  The user's mobile phone is connected to the power supply control device 50 via a public line network 3 such as a WAN (Wide Area Network) so that the alert can be received by the mobile phone. The e-mail address and telephone number are set in advance.

  If the power supply control device 50 does not receive the presence / absence of the input operation from any electronic device 10, since there is no electronic device 10 to which an alert is transmitted, a response packet is sent to the mobile phone in step S 21. The alert about the received electronic device 10 is transmitted. The mobile phone outputs the received alert.

  The means and functions described above are realized by a computer (including a CPU, an information processing device, and various terminals) reading and executing a predetermined application program. The application program is provided in a form recorded on a computer-readable recording medium such as a flexible disk, CD (CD-ROM, etc.), DVD (DVD-ROM, DVD-RAM, etc.), for example. In this case, the computer reads the application program from the recording medium, transfers it to the internal storage device or the external storage device, stores it, and executes it. The program may be recorded in advance in a storage device (recording medium) such as a magnetic disk, an optical disk, or a magneto-optical disk, and provided from the storage device to a computer via a communication line.

  Furthermore, part or all of the application program may be provided from the server via the public line network, and the above-described method may be provided as a SaaS (Software as a Service) type service. That is, in this case, a part of the program for executing the above-described processing is transmitted from the server, executed on the terminal side, and implemented in cooperation with the server-side program.

  As mentioned above, although embodiment of this invention was described, this invention is not limited to each above-mentioned embodiment, The deformation | transformation in the range which can achieve the objective of this invention, improvement, etc. are included in this invention. is there.

DESCRIPTION OF SYMBOLS 1 Power supply control management system 10 Electronic device 50 Power supply control apparatus

Claims (7)

A power supply control device that manages the power supply of an electronic device connected to a network,
An activation time measuring means for detecting activation of a power source of the electronic device and starting measurement of activation time for the electronic device;
Input operation receiving means for receiving an input operation on the electronic device via a network;
A user flag storage means for resetting the activation time of the electronic device when the input operation is received, and storing the electronic device that has received the input operation and a user flag in association with each other;
Alert transmission means for transmitting an alert for an electronic device whose activation time has reached a predetermined time to the electronic device whose user flag is stored by the user flag storage means when the activation time has reached a predetermined time When,
A power supply control device comprising:   The power supply control apparatus according to claim 1, wherein the alert transmission unit transmits a command to turn off the power to the electronic device whose activation time has reached a predetermined time. 3. The power supply control device according to claim 1 or 2, wherein the user flag storage means performs an input operation from an electronic device different from the electronic device associated with the user flag storage means after storing the user flag. If received, reset the activation time of the different electronic device, store the different electronic device and the user flag in association with each other,
The alert transmission means is a power supply control device that selects the different electronic device and transmits an alert.   The power supply control device according to claim 3, wherein the alert transmission unit selects an electronic device having an output function from the electronic devices that have received the input operation, and transmits the alert.   5. The power supply control device according to claim 1, wherein when the user flag storage unit does not receive an input operation from the electronic device, the alert transmission unit is connected to be communicable. A power supply control device for transmitting the alert to a mobile phone. A power control method in which a power control device manages the power of an electronic device connected to a network,
A startup time measuring step of detecting startup of the power supply of the electronic device and starting measurement of startup time for the electronic device;
An input operation receiving step for receiving an input operation on the electronic device via a network;
A user flag storage step of resetting the activation time of the electronic device that has received the input operation when the input operation is received, and storing the electronic device that has received the input operation in association with a user flag;
An alert transmission step of transmitting an alert for an electronic device whose activation time has reached a predetermined time to the electronic device in which the user flag is stored in the user flag storage step when the activation time has reached a predetermined time When,
A power control method comprising: In the power control device, which is a computer that controls the power of electronic devices connected to the network,
A startup time measuring step of detecting startup of the power supply of the electronic device and starting measurement of startup time for the electronic device;
An input operation receiving step for receiving an input operation on the electronic device via a network;
A user flag storage step of resetting the activation time of the electronic device that has received the input operation and storing the electronic device that has received the input operation and a user flag in association with each other when the input operation is received;
An alert transmission step of transmitting an alert for an electronic device whose activation time has reached a predetermined time to the electronic device in which the user flag is stored in the user flag storage step when the activation time has reached a predetermined time , A program for controlling the power supply.

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