JP2008022669A - System and method for power supply control - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a power supply control system and a power supply control method capable of easily and properly reducing standby power corresponding to users. <P>SOLUTION: When a force switch 213 is turned on or off by a user; an ID controller 211 turns on or off an ID switch 212, and transmits the home information showing the force switch 213 operated to a main controller 100 through a power supply transmission line 500. An individual power supply on/off registration specifying means 120 registers the home information received in a management table 130. The individual power supply on/off registration specifying means 120 searches the latest power-on time or power-off time from the home information stored in the management table 130. When the researched time is compared with and matched with the present time, the power-on/off specification information is output to the power supply transmission line 500. The ID controller 211 turns on/off the ID switch 212 based on the received power on/off information. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a power supply control system and a power supply control method for controlling turning on / off of power of an electrical appliance.

  From the viewpoint of energy saving, it is desired to reduce standby power consumption (standby power) in household appliances (home appliances). Standby power is consumed to drive the timer circuit, remote control circuit, etc. even when the appliance is not used, that is, when the plug is only plugged into the outlet and the power is not turned on. Power. For example, in an electrical appliance capable of starting a timer, the timer circuit is always connected to the power source and operates in order to turn on the electrical appliance main body at the time set by the timer. In general households, since the time when the appliances are not used is long, such as when going to bed or going out, the ratio of the standby power to the power consumption may become a non-negligible magnitude.

  In addition, when using many electrical appliances, for example, it is desirable to turn off the power of one electrical appliance before going to bed, and it is necessary to set a timer to start the timer for another electrical appliance. In some cases, it is difficult to properly manage the power supply of all appliances.

  An example of a system for managing the power supply of an electrical appliance is described in Patent Document 1. In Patent Document 1, a home controller is connected to a power strip by superimposing a control signal transmitted via a communication line such as the Internet on a commercial power source and transmitting it via a home power distribution line. It is described that the power supply of an electric appliance to be turned on / off is controlled. Also, the home controller receives operation instructions for setting / changing the recording reservation channel and setting / changing the recording reservation time via the communication line, and sends the instructions to the electrical appliance via the home distribution line. Is described.

  In Patent Document 2, a power control adapter device connected to a power control device registers information such as a power-off date and time in the power control information table, and powers on the power control device at the registered time. Cutting is described.

  When combined with the methods described in Patent Documents 1 and 2, the power control device connected to the appliance via the in-house distribution line turns on / off the appliance at the registered time, or reserves the timer It is possible to send an instruction to set or change the time.

  However, in the methods described in Patent Documents 1 and 2, since it is necessary to register the time of turning on / off the power for each electrical appliance, the amount of work is enormous when the number of electrical appliances to be managed is large. turn into. Therefore, the following schedule delivery method has been proposed.

  In Patent Document 3, time schedule data indicating the time of operation stop / restart considering energy saving is registered in the mobile phone, and the time schedule data is corrected with fluctuation data such as daily meteorological information taken in separately. It is described that energy saving can be realized by a simple operation by distributing to an air conditioner.

JP 2002-305845 A (paragraphs 0029, 0050-0052, FIG. 1) JP 2001-159935 A (paragraphs 0044-0046) Japanese Patent Laying-Open No. 2005-257113 (paragraph 0027)

  However, in the method described in Patent Document 3, the time schedule data and the fluctuation data are general data downloaded from a homepage such as an electric power company or a weather association. Since the usage status of electrical appliances largely depends on the lifestyle of the user, it is difficult to appropriately reduce standby power when managing power based on general data.

  Also, in the methods described in Patent Documents 1 to 3, a mobile phone or a personal computer transmits information indicating the time when the power is turned on / off to the power control device via a communication line such as the Internet. Accordingly, it is generally difficult to introduce a power supply control device to which only a power transmission path is connected, because it is necessary to connect to a communication line such as the Internet.

  Therefore, an object of the present invention is to provide a power supply control system and a power supply control method capable of reducing standby power according to a user easily and appropriately.

  A power supply control system according to the present invention is a power supply control system including a control device that controls the power supply of an electrical appliance that is communicably connected via a power transmission line that supplies electric power. Time information indicating the time at which the home appliance information and the power of the electrical appliance are turned on or off by receiving the home appliance information indicating that the electrical appliance is turned on or off through the power transmission path. Household appliance information registration means for associating information with storage means, and instruction means for transmitting instruction information indicating a power-on instruction or a power-off instruction based on the household appliance information stored in the storage means. When the product is instructed to turn on or off the power manually, the product is turned on or off and the home appliance information transmitting means for transmitting the home appliance information is transmitted by the instruction means. Receives instruction information via the power transmission path, characterized in that a power control unit for powering on or off based on the received instruction information.

  The instructing means searches the home appliance information stored in the storage means under a predetermined condition, and is time information corresponding to the searched home appliance information and indicating the time when the appliance is turned on and the present time When the time matches a predetermined condition, it outputs instruction information indicating a power-on instruction, and indicates the time information corresponding to the retrieved home appliance information and the time when the power of the electrical appliance is turned off. When the indicated time information and the current time match a predetermined condition, instruction information indicating a power-off instruction may be output. According to such a configuration, the instruction information is output not only when the current time matches the time when the power is turned on and the time when the power is turned off, but also when a predetermined condition is met. .

  The home appliance information and the instruction information are each information including identification information that can identify the electrical appliance, and the power control means may turn on or off the power when receiving the instruction information including its own identification information. Good. According to such a configuration, home appliance information and instruction information corresponding to an electrical appliance whose power is turned on or off are output, so that the corresponding electrical appliance can be turned on or off.

  A power supply control method according to the present invention is a power supply control method in which a control device controls the power supply of an electrical appliance that is communicably connected via a power transmission line, and the electrical appliance manually instructs power on or off. Home appliance information transmitting step for transmitting home appliance information indicating that the electrical appliance is turned on or off, and the control device transmits the home appliance information transmitted by the electrical appliance. Is stored in the storage means in association with the home appliance information and the time information indicating the time when the electrical appliance is turned on or off based on the home appliance information stored in the storage means. An instruction step for transmitting instruction information indicating a power-on instruction or a power-off instruction; and the electrical appliance receives the transmitted instruction information via the power transmission path, and based on the received instruction information. Characterized in that it comprises a power supply control step of powering on or off with are.

  In the instructing step, the home appliance information stored in the storage means is searched under a predetermined condition, and the time information corresponding to the searched home appliance information and indicating the time when the appliance is turned on and the present time When the time matches a predetermined condition, it outputs instruction information indicating a power-on instruction, and indicates the time information corresponding to the retrieved home appliance information and the time when the power of the electrical appliance is turned off. When the indicated time information and the current time match a predetermined condition, instruction information indicating a power-off instruction may be output. According to such a configuration, the instruction information is output not only when the current time matches the time when the power is turned on and the time when the power is turned off, but also when a predetermined condition is met. .

  The home appliance information and the instruction information are information including identification information that can identify each electric appliance, and when the instruction information including its own identification information is received in the power control step, the power is turned on or off. Good. According to such a configuration, the home appliance information and the instruction information corresponding to the appliance that has been turned on or off are output, so that the corresponding appliance can be turned on or off.

  According to the present invention, the home appliance can be automatically turned on / off based on the time when the user turned on / off the home appliance. There is an effect that electric power can be reduced. In addition, since the power transmission path is used, the household electric appliance can be connected to the main controller simply by connecting to an outlet, so that standby power can be easily reduced.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a block diagram showing an embodiment of a power supply control system according to the present invention. The power supply control system shown in FIG. 1 includes a main controller 100 and a household appliance (home appliance) 200. The main controller 100 and the household appliance 200 are connected via a power transmission line (power supply wiring, electric wire).

  The main controller 100 and the home appliance 200 perform power transmission line communication (PLC: Power Line Communication) which is communication via the power transmission line. Power transmission line communication is a communication method that has been developed in recent years, and since a general outlet can be used as a data transmission / reception port, there is no need for new wiring work and the plug is connected to an outlet. There is an advantage that you can connect to the network just by plugging it into the network. For example, in general power transmission path communication, a personal computer connected to a PLC modem can be connected to a network by connecting the PLC modem to an outlet.

  In power transmission line communication, for example, communication is performed by superimposing a high-frequency signal as communication data on a generally supplied electrical frequency. When a personal computer receives a data signal via a power transmission line and a PLC modem, the data signal is supplied to electricity supplied at 50 Hz in the Kanto region and 60 Hz in the Kansai region. It is superimposed as a signal in the frequency band of 450 kHz. A filter included in the PLC modem separates electricity and data signals. Since the separated data signal is an analog signal, it is converted into a digital signal by a modem included in the PLC modem and output to a personal computer.

  The household appliance 200 is, for example, an appliance capable of timer setting and remote control operation, and includes a power supply ID controller unit 210, a main power supply 220, a main circuit 230, and a plug 240. The household appliance 200 is connected to the main controller 100 via the power transmission path 500 when the plug 240 is inserted into the outlet 300. That is, the home appliance 200 performs connection and data communication with the main controller 100 based on the power transmission channel communication protocol.

  The power ID controller unit 210 includes an ID controller 211, an ID switch 212, and a forced switch 213.

  The ID controller 211 includes a communication control unit such as a PLC modem, for example, and is connected to the power transmission path 500 via the plug 240 to perform control for communication. The ID controller 211 transmits an initial ID to the main controller 100 when the plug 240 is inserted into the outlet 300 and electricity is supplied. Further, the ID controller 211 receives information indicating whether or not the initial ID is unused from the main controller 100, and determines whether or not the initial ID has been accepted.

  For example, when information indicating that the initial ID is unused is received, it is determined that the transmitted initial ID can be used and stored in a memory or the like (not shown). When the information indicating that the initial ID is in use is received, it is determined that the transmitted initial ID is unusable, and the ID different from the transmitted initial ID is set as the initial ID to the main controller 100 again. Send.

  The ID switch 212 is a switch that is turned on / off by the ID controller 211. When the ID switch 212 is on, the household appliance 200 can be used by supplying electricity to the main power source 220 and the main circuit 230. The forced switch 213 is a switch operated by the user.

  The ID controller 211 turns on the ID switch 212 when the plug 240 is inserted into the outlet 300 and electricity is supplied.

  The ID controller 211 turns on the ID switch 212 when the forced switch 213 is turned on by the user. When the forcible switch 213 is turned off by the user, the ID controller 211 turns off the ID switch 212. That is, by operating the forced switch 213, the user can turn on / off the ID switch 212.

  When the forced switch 213 is turned on / off by the user, the ID controller 211 transmits home appliance information indicating that the forced switch 213 has been operated to the main controller 100 via the power transmission path 500.

  The household appliance information includes a household appliance ID that can identify the household appliance 200, power-on information that indicates that the forced switch 213 is turned on, power-off information that indicates that the forced switch 213 is turned off, and a power source (ID switch 212). ) Is always on, code information indicating whether to turn on / off the power supply (ID switch 212), and optional information that can be freely set / referenced by each home appliance. It is information including. The option information includes, for example, information stored in a volatile memory (not shown) included in the main circuit 230, information indicating a day of the week when the power is turned on, and when the home appliance 200 has a timer reservation function. Is information indicating the reservation time.

  Further, the ID controller 211 turns the ID switch 212 on and off based on the power on / off instruction information transmitted by the main controller 100. The power on / off instruction information is information including a home appliance ID, an instruction flag indicating which of power on / off is instructed, and option information.

  A timer circuit, a remote control circuit, and the like are included in the main power supply 220 or the main circuit 230. That is, the timer circuit, the remote control circuit, etc. operate only when the ID switch 212 is on. Timer reservation information and the like are stored in a memory (not shown) included in the main circuit 230. The memory may be volatile or non-volatile. When the memory is volatile, the ID controller 211 preferably writes the option information included in the power on / off instruction information into the memory when receiving the power on / off instruction information.

  The main controller 100 includes an ID determination / power on / off transmission unit 110, an individual power off / on registration designation unit 120, and a management table 130.

  The main controller 100 is included in, for example, the distribution board 400 and is connected to each outlet via a power transmission path 500. That is, the electricity supplied from the power company is supplied to each outlet via the main controller 100. When the distribution board 400 includes, for example, a current limiter, a leakage breaker, and a wiring breaker, the main controller 100 is provided between, for example, the leakage breaker and the wiring breaker. May be. FIG. 1 illustrates a breaker 401 as a current limiter.

  The ID determination / power on / off transmission means 110 includes a communication control unit such as a PLC modem, for example, and is connected to the power transmission path 500 to perform control for communication. Further, the ID determination / power on / off transmission means 110 registers the initial ID transmitted from each household appliance in the management table 130. FIG. 2 is an explanatory diagram illustrating an example of home appliance information registered in the management table 130. As shown in FIG. 2, in the management table 130, home appliance information transmitted from each home appliance, and home information and time information indicating the time when the appliance is turned on or off are associated with each other. One piece of home appliance information is stored. For example, the ID determination / power-on / off transmission unit 110 supplies the time when the home appliance information is received in correspondence with power-on information (or power-off information) indicating that the forced switch 213 is turned on (or off). It is stored in the management table 130 as the on time (or power off time). That is, the home appliance information registered in the management table 130 includes a home appliance ID, a power-on time indicating a time when the forced switch 213 is turned on, a power-off time indicating a time when the forced switch 213 is turned off, and code information. , Information including valid information and option information. In the management table 130, both power-on time and power-off time may be set as one home appliance information, or only one of them may be set. The home appliance information may be information including a plurality of time sets, with the power-on time, the power-off time, and the option information as a set of time sets. FIG. 2 illustrates a case where n time sets are included as one piece of home appliance information.

  FIG. 3 is an explanatory diagram for explaining the function of the main controller 100.

  The ID determination / power on / off transmission means 110 receives the initial ID transmitted from the home appliance 200 and registers it in the management table 130. The initial ID is a home appliance ID that is transmitted when the home appliance 200 is connected to the outlet 300.

  The individual power off / on registration designation unit 120 includes a learning unit 121. The learning unit 121 registers household appliance information transmitted from each household appliance in the management table 130. Further, the learning unit 121 includes a matching circuit 122. The matching circuit 122 searches the information registered in the management table 130 under a predetermined condition, learns the optimal time, and outputs power on / off instruction information. Searching under a predetermined condition is, for example, searching for the latest power-on time (or power-off time) or searching for the most registered power-on time (or power-off time).

  The main controller 100 has a clock 140 and can refer to the current time. The matching circuit 122 searches the home appliance information stored in the management table 130 under a predetermined condition, and compares the searched power-on time (or power-off time) with the current time to match the power The on / off instruction information is output to the power transmission path 500 via the ID determination / power on / off transmission means 110.

  For example, the matching circuit 122 may learn the time to turn on (or turn off) the household appliance 200 by searching the management table 130 for the latest power on time (or power off time). . In this case, the power-on / off instruction information is output when the retrieved time, that is, the time when the power was turned on (or turned off) last time and the current time coincide with each other.

  In addition, when a plurality of home appliance information having the same power-on time (or power-off time) is registered, matching circuit 122 searches for the most registered power-on time (or power-off time). Thus, the time when the household appliance 200 is turned on (or turned off) may be learned. In this case, when the most frequently registered power-on time (or power-off time) is compared with the current time, the power-on / off instruction information is output.

  When the household appliance 200 is an appliance whose usage pattern varies greatly depending on the season, such as a cooling device, it is preferable to learn the optimal time according to the season. For example, the power-on time is information indicating not only the time but also the month and date. After the matching circuit 122 searches the management table 130 for the power-on time of the same month as the present, the average power-on time retrieved By calculating the time or searching for the earliest time, the optimum time according to the season can be learned. Further, when the result of searching for the power-on time in the same month is less than a certain number, it may be instructed to turn off the power.

  In the present embodiment, the control device is realized by the main controller 100. The home appliance information registration unit and the instruction unit are realized by the individual power-off / on registration designation unit 120. The electrical appliance is realized by a household electrical appliance 200. The home appliance information transmission unit and the power source control unit are realized by the ID controller 211.

  Next, the operation of the present embodiment will be described with reference to the drawings. FIG. 4 is a flowchart showing the operation in the initial state of the power supply control system.

  When plug 240 of household appliance 200 is inserted into outlet 300 (step S111), ID controller 211 transmits an initial ID to main controller 100 (step S112).

  The ID determination / power on / off transmission means 110 of the main controller 100 receives the initial ID transmitted from the home appliance 200 and compares it with the home appliance information stored in the management table 130 (step S121). It is determined whether registration is possible in the management table 130 (step S122).

  If the ID determination / power on / off transmission means 110 determines that the initial ID is an unused home appliance ID (YES), it registers the initial ID in the management table (step S123), and the household appliance 200 Information indicating that it is unused. If it is determined that the initial ID is the home appliance ID being used (NO), the ID determination / power on / off transmission means 110 is not being registered in the management table and is being used for the home appliance 200. Information indicating the fact is transmitted.

  When receiving information indicating whether or not the initial ID is unused from the main controller 100, the ID controller 211 determines whether or not the initial ID has been accepted (step S113). When the information indicating that the initial ID is in use is received, it is determined that the initial ID has not been accepted, an ID different from the transmitted initial ID is set as the initial ID (step S114), and the process proceeds to step S112. Then, the data is transmitted to the main controller 100 again. When the information indicating that the initial ID is unused is received, it is determined that the initial ID has been accepted, and is stored in a memory or the like as its own home appliance ID (step S115).

  Immediately after the plug 240 is inserted into the outlet 300, if the power on / off instruction information is not transmitted from the main controller 100, the ID controller 211 turns on the ID switch 212 (step S116).

  The ID controller 211 turns off the ID switch 212 when the forced switch 213 is turned off by the user (step S117). Further, the ID controller 211 transmits household appliance information indicating that the forcible switch 213 is turned off to the main controller 100 via the power transmission path 500.

  The ID controller 211 turns on the ID switch 212 when the forcible switch 213 is turned on by the user (step S118). In addition, the ID controller 211 transmits household appliance information indicating that the forced switch 213 is turned on to the main controller 100 via the power transmission path 500.

  Learning means 121 in individual power off / on registration designation means 120 of main controller 100 corresponds to home appliance information transmitted from each household appliance and time information indicating the time when the appliance is turned on or off. In addition, it is registered in the management table 130 as one piece of home appliance information (step S124). The learning unit 121 registers the home appliance information in an area corresponding to the home appliance ID of the received home appliance information.

  Next, an operation in which the main controller 100 instructs to turn on / off the power will be described. FIG. 5 is a flowchart showing the operation of the power supply control system. In the following description, a case where the learning unit 121 learns the optimum time by searching for the latest power-on time (or power-off time) is illustrated.

  For example, the matching circuit 122 in the learning unit 121 of the main controller 100 periodically retrieves the latest power-on time (or power-off time) from the management table 130 and compares the retrieved time with the current time (step). S211).

  Note that the matching circuit 122 refers to, for example, home appliance information whose valid information is “1” among the home appliance information stored in the management table 130. For example, when the valid information is “1”, it indicates that power on / off control is performed.

  The coincidence circuit 122 determines whether or not the searched time and the current time match (step S212). If they match (YES), it is determined that the power must be turned on, and the power on is instructed. The power on / off instruction information in which the instruction flag is set is output to the power transmission path 500 via the ID determination / power on / off transmission means 110 (step S213).

  Further, it is determined whether or not the current time and the power-off time match (step S214). If they match (YES), it is determined that the power-off is necessary, and an instruction flag for instructing the power-off is set. The power on / off instruction information is output to the power transmission path 500 via the ID determination / power on / off transmission means 110 (step S215).

  The ID controller 211 receives the power on / off instruction information via the power transmission path 500, and determines whether or not the home appliance ID included in the power on / off instruction information is the same as its own home appliance ID (step S221). ). If they are the same, the instruction flag included in the power on / off instruction information is referred to. The ID controller 211 determines whether or not the instruction flag is on (step S222). If the instruction flag is on (YES), the ID controller 211 determines that the power needs to be turned on, and turns the ID switch 212 on. It is turned on (step S223), and a series of processing is terminated. If the instruction flag is off (NO), it is determined that the power source needs to be turned off, the ID switch 212 is turned off (step S224), and the series of processing ends.

  For example, in the case of household appliances 200 that must always be turned on, such as a refrigerator, the ID controller 211 transmits code information together with the initial ID transmitted to the main controller 100 in step S112. It is desirable to do. For example, when the code information is “1”, it indicates that the power supply must be kept on at all times. When the code information “1” is transmitted together with the initial ID, the ID determination / power on / off transmission unit 110 registers the home appliance ID and the code information in the management table 130. In step S <b> 211, the main controller 100 compares the current time with the power-on time and the power-off time with reference to the home appliance information whose code information is “0” among the home appliance information stored in the management table 130. .

  Also, a time when a personal computer connected to the main controller 100 via the power transmission path 500 is communicable to access the management table 130 to register home appliance information, thereby turning on / off the power supply of the home appliance. May be set. In this case, the personal computer performs connection and data communication with the main controller 100 based on a protocol for power transmission path communication. The main controller 100 may be included in a personal computer. According to such a configuration, for example, a printer that is manually powered on can be powered on from a personal computer. Further, the personal computer may refer to information such as an electronic mail transmitted to the personal computer instead of the management table 130 and instruct to turn on / off the household appliance.

  As described above, according to the present embodiment, the user can automatically turn on / off the power based on the time when the user turns on / off the home appliance. Accordingly, standby power can be reduced. In addition, since the power transmission path is used, the main controller can be installed on a distribution board or the like to which only the power transmission path is generally connected without connecting to a communication line such as the Internet. Since it can be connected to the main controller simply by connecting to an outlet, standby power can be easily reduced.

  The present invention can be applied to control turning on / off of electric appliances, and in particular, can be effectively applied to reducing standby power consumption of electric appliances, computers, etc. in homes or holiday offices.

It is a block diagram which shows one Embodiment of the power supply control system by this invention. It is explanatory drawing which shows the example of the household appliance information registered into a management table. It is explanatory drawing for demonstrating the function of a main controller. It is a flowchart which shows operation | movement of the initial state of a power supply control system. It is a flowchart which shows operation | movement of a power supply control system.

Explanation of symbols

DESCRIPTION OF SYMBOLS 100 Main controller 110 ID determination / power on / off transmission means 120 Individual power off / on registration designation means 130 Management table 200 Home appliance 210 Power supply ID controller unit 211 ID controller 212 ID switch 213 Forced switch 220 Main power supply 230 Main circuit 240 plug 300 outlet 400 distribution board 401 breaker 500 power transmission line

Claims (6)

A power supply control system comprising a control device for controlling the power supply of electrical appliances communicably connected via a power transmission line for supplying power,
The controller is
Information transmitted by the electrical appliance is received via the power transmission path that indicates that the electrical appliance is turned on or off, and the household appliance information and the electrical appliance are turned on or off. Home appliance information registration means for associating and storing time information indicating the recorded time in the storage means;
Instruction means for transmitting instruction information indicating a power-on instruction or a power-off instruction based on home appliance information stored in the storage means,
The appliance is
Home appliance information transmission means for transmitting the home appliance information at the same time as turning on or off the power when there is a manual power on or off instruction;
A power supply control system comprising: power supply control means for receiving instruction information transmitted by the instruction means via a power transmission path and turning on or off the power based on the received instruction information. The instructing means searches the home appliance information stored in the storage means under a predetermined condition, and is time information corresponding to the searched home appliance information and indicating the time when the appliance is turned on and the present time When the time matches a predetermined condition, it outputs instruction information indicating a power-on instruction, and indicates the time information corresponding to the retrieved home appliance information and the time when the power of the electrical appliance is turned off. The power supply control system according to claim 1, wherein when the indicated time information and the current time match a predetermined condition, instruction information indicating a power-off instruction is output. The home appliance information and the instruction information are information including identification information that can identify each electric appliance,
The power supply control system according to claim 1 or 2, wherein the power supply control means turns on or off the power supply when receiving instruction information including its own identification information. A power supply control method for controlling a power supply of an electrical appliance that is communicatively connected via a power transmission path.
When the electrical appliance has a manual power-on instruction or a power-off instruction, the power supply is turned on or off, and household electrical appliance information is transmitted that indicates that the electrical appliance is powered on or off. Steps,
The control device receives home appliance information transmitted by the electrical appliance via a power transmission path, and stores the home appliance information in association with time information indicating the time when the electrical appliance is turned on or off. An instruction step of transmitting instruction information indicating a power-on instruction or a power-off instruction based on the home appliance information stored in the storage means;
A power control method comprising: a power control step in which the electrical appliance receives the transmitted instruction information via a power transmission path and turns on or off the power based on the received instruction information. In the instructing step, the home appliance information stored in the storage means is searched under a predetermined condition, and the time information corresponding to the searched home appliance information and indicating the time when the appliance is turned on and the present time When the time matches a predetermined condition, it outputs instruction information indicating a power-on instruction, and indicates the time information corresponding to the retrieved home appliance information and the time when the power of the electrical appliance is turned off. The power supply control method according to claim 4, wherein when the indicated time information and the current time match a predetermined condition, instruction information indicating a power-off instruction is output. The home appliance information and the instruction information are information including identification information that can identify each electric appliance,
The power control method according to claim 4 or 5, wherein in the power control step, when instruction information including self identification information is received, the power is turned on or off.

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