JP2013017264A - Electric power supply apparatus, electric power management system, electric power management method, and electric power management program - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an electric power supply apparatus, an electric power management system, an electric power management method, and an electric power management program which allow an apparatus, measuring electric power supplied to an electric apparatus for presenting the electric power consumption information of the electric apparatus to a user, to reduce the power consumption of the apparatus itself.SOLUTION: An electric power supply apparatus 101 includes: a connection part 12 connecting with an electric apparatus 121; an electric power transmission part 11 for supplying electric power received from the exterior to the electric apparatus 121 through the connection part 12; a measuring part 13 for measuring at least a current supplied by the electric power transmission part 11 to the electric apparatus 121; a transmission part 14 for transmitting electric power consumption information showing the measurement result of the measuring part 13 to a management apparatus; and a control part 15 that may stop at least one of operations of the measuring part 13 and the transmission part 14.

Description

  The present invention relates to a power supply device, a power management system, a power management method, and a power management program, and more particularly to a power supply device, a power management system, a power management method, and a power management program having a function of measuring the power consumption of an electrical device. .

  In order for the user to grasp the power consumption at home and at work, a power strip incorporating a power sensor and a communication module has been developed. An electrical device is connected to the power strip, and the collected power consumption information is transmitted to, for example, a home gateway in the home. Thereby, the power consumption information of a plurality of power strips is collected, and the power consumption information in the home is presented to the user.

  As an example of such a power strip, for example, Japanese Patent Laid-Open No. 2008-197755 (Patent Document 1) discloses the following configuration. That is, in a power strip provided with an AC plug that can be connected to a built-in outlet and an outlet that can be connected to an AC plug of a device, a power line communication modem connected to the AC plug of the power tap, And a programmable controller interposed between the AC plug of the power tap and the outlet. The power line communication modem receives the program data to which the control condition of the programmable controller is added on the power line carrier communication and sends the received program data to the programmable controller. On the other hand, the programmable controller can turn on / off the power of the device connected to the outlet in response to the transmitted program data.

JP 2008-197755 A

  If the power tap as described above is used, the user can easily grasp the power consumption information in the home and can expect a power saving effect. However, the power strip itself is always connected to the construction outlet, and the power strip also consumes power.

  In order to obtain more power saving effect, the inventors of the present application have focused on the fact that power saving of the power strip for obtaining power consumption information is more important in introducing many power strips in the home.

  This invention was made in order to solve the above-mentioned subject, The objective is in the apparatus which measures the electric power supplied to an electric equipment in order to show the electric power consumption information of an electric equipment to a user. To provide a power supply device, a power management system, a power management method, and a power management program capable of reducing power consumption.

  In order to solve the above-described problems, a power supply device according to an aspect of the present invention includes a connection unit to which an electrical device can be connected, and power for supplying power received from the outside to the electrical device via the connection unit. A transmission unit, a measurement unit for measuring at least the current supplied to the electrical device by the power transmission unit, a transmission unit for transmitting power consumption information indicating a measurement result of the measurement unit to a management device, And a control unit capable of stopping the operation of at least one of the measurement unit and the transmission unit.

  With such a configuration, the power consumption of the power supply device itself can be reduced, so that power consumption awareness of the user is enhanced by using the power supply device to present home power consumption information to the user. It can prevent that the meaning which uses a supply apparatus is impaired. Therefore, in the device that measures the power supplied to the electric device in order to present the power consumption information of the electric device to the user, the power consumption of the device itself can be reduced.

  Preferably, the control unit determines whether to stop the operation of the transmission unit based on a measurement result of the measurement unit.

  With such a configuration, the power saving operation can be performed at an appropriate timing based on the power consumption of the electrical equipment connected to the power supply device. For example, in an appropriate situation, such as when the electric device connected to the power supply device is in a standby state, the power consumption is low and the operation of the transmission unit is stopped when it is less necessary to notify the user of the power consumption. Power saving operation can be performed.

  More preferably, the control unit stops the operation of the transmission unit based on the measurement result of the measurement unit, and then restarts the operation of the transmission unit based on the new measurement result of the measurement unit. Determine whether.

  With such a configuration, the power saving operation can be stopped at an appropriate timing based on the power consumption of the electrical equipment connected to the power supply device. For example, when the electric device connected to the power supply device returns from the standby state to the normal operation and the power consumption increases, and the necessity of notifying the user of the power consumption becomes high, the operation of the transmission unit is resumed. The power saving operation can be stopped in an appropriate situation.

  More preferably, the control unit stops the operation of the transmission unit based on a new measurement result of the measurement unit after the transmission unit that has resumed operation transmits the power consumption information to the management device. It is determined again whether or not.

  With such a configuration, when the power consumption of the electric device connected to the power supply device repeatedly increases and decreases, the power saving operation can be appropriately switched between start and stop, and the power saving effect can be enhanced.

  More preferably, the transmission unit can further relay a communication signal from another device to another device, and the control unit is configured to measure the measurement result of the measurement unit when the transmission unit performs the relay. Regardless, the operation of the transmission unit is continued.

  With such a configuration, for example, when there is a power supply apparatus that cannot be directly connected to the management apparatus, priority can be given to the relay operation of the power consumption information from the power supply apparatus.

  Preferably, in a state where the operation of the measurement unit is stopped, the control unit resumes the operation of the measurement unit when a predetermined condition is satisfied, and after the measurement unit performs the measurement, the control unit performs the measurement again. Stop the measurement unit.

  With such a configuration, the measurement unit can be activated only when it is necessary to transmit power consumption information, so that the power saving effect of the power supply device can be enhanced. Further, as compared with the configuration employing the power saving mode in which the operation of the transmission unit is stopped and the operation of the measurement unit is continued, the power saving operation can always be performed while supporting the relay mode.

  More preferably, the control unit restarts the operation of the measurement unit every time a predetermined time elapses.

  With such a configuration, it is possible to control operation stop and operation restart of the measurement unit with a simple configuration such as providing a timer in the power supply apparatus.

  In order to solve the above problems, a power management system according to an aspect of the present invention is a power management system including one or a plurality of power supply devices and a management device, and the power supply device includes an electrical device. A connectable connection unit, a power transmission unit for supplying electric power received from the outside to the electric device via the connection unit, and for measuring at least a current supplied to the electric device by the power transmission unit A measurement unit; a transmission unit configured to transmit power consumption information indicating a measurement result of the measurement unit to the management device; and a control unit capable of stopping the operation of at least one of the measurement unit and the transmission unit.

  With such a configuration, the power consumption of the power supply device itself can be reduced, so that power consumption awareness of the user is enhanced by using the power supply device to present home power consumption information to the user. It can prevent that the meaning which uses a supply apparatus is impaired. Therefore, in the device that measures the power supplied to the electric device in order to present the power consumption information of the electric device to the user, the power consumption of the device itself can be reduced.

  In order to solve the above-described problem, a power management method according to an aspect of the present invention is a power management method in a power supply device including a connection unit to which an electrical device can be connected, and the power received from the outside is connected to the power management device. A step of supplying to the electrical device via a unit, a step of measuring at least a current supplied to the electrical device via the connection unit, and a step of transmitting power consumption information indicating a measurement result of the measurement unit to a management device And a step of stopping the operation of at least one of the measurement unit and the transmission unit, and a step of restarting the operation of the measurement unit or the transmission unit that has been stopped.

  With such a configuration, the power consumption of the power supply device itself can be reduced, so that power consumption awareness of the user is enhanced by using the power supply device to present home power consumption information to the user. It can prevent that the meaning which uses a supply apparatus is impaired. Therefore, in the device that measures the power supplied to the electric device in order to present the power consumption information of the electric device to the user, the power consumption of the device itself can be reduced.

  In order to solve the above-described problems, a power management program according to an aspect of the present invention is a power management program used in a power supply device including a connection unit to which an electrical device can be connected, and is received by a computer from the outside. Managing the power consumption information indicating the measurement result of the measurement unit, the step of supplying at least the current supplied to the electrical device via the connection unit, the step of measuring the current supplied to the electrical device via the connection unit A program for executing a step of transmitting to an apparatus, a step of stopping the operation of at least one of the measurement unit and the transmission unit, and a step of restarting the operation of the measurement unit or the transmission unit.

  With such a configuration, the power consumption of the power supply device itself can be reduced, so that power consumption awareness of the user is enhanced by using the power supply device to present home power consumption information to the user. It can prevent that the meaning which uses a supply apparatus is impaired. Therefore, in the device that measures the power supplied to the electric device in order to present the power consumption information of the electric device to the user, the power consumption of the device itself can be reduced.

  ADVANTAGE OF THE INVENTION According to this invention, in the apparatus which measures the power supply to an electric device in order to show a user the power consumption information of an electric device, the power consumption of the said apparatus itself can be reduced.

It is a figure which shows the structure of the power management system which concerns on embodiment of this invention. It is a figure which shows roughly the external appearance of the power strip which concerns on embodiment of this invention. It is a figure which shows the structure of the power strip which concerns on embodiment of this invention. It is the sequence diagram which defined the operation | movement procedure at the time of the power strip which concerns on embodiment of this invention performing a power saving operation | movement. It is the sequence diagram which defined the operation | movement procedure at the time of determining whether the power strip which concerns on embodiment of this invention performs a power saving operation | movement. It is the sequence diagram which defined the other example of the operation | movement procedure at the time of the power strip which concerns on embodiment of this invention performing a power saving operation | movement. In the power management system which concerns on embodiment of this invention, it is the sequence diagram which defined the operation | movement procedure at the time of constructing a tap network.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. In the drawings, the same or corresponding parts are denoted by the same reference numerals and description thereof will not be repeated.

[Configuration and basic operation]
FIG. 1 is a diagram showing a configuration of a power management system according to an embodiment of the present invention.

  Referring to FIG. 1, a power management system 201 is constructed in a home, for example, and includes a plurality of power taps (power supply devices) 101 and a CT (Current Transformer) clamp (power supply device) attached to a distribution board 102. ), A wireless adapter 103, a home gateway (management device) 104, and a DPF (Digital Photo Frame) 105.

  The power strip 101 and the wireless adapter 103 transmit and receive wireless signals that comply with, for example, the ZigBee standard. The CT clamp and the wireless adapter 103 also transmit and receive wireless signals in accordance with, for example, the ZigBee standard. The home gateway 104 and the DPF 105 transmit and receive radio signals according to, for example, a wireless LAN (Local Area Network) system of the IEEE 802.11 standard. Note that these communication standards in the power management system 201 are examples, and only wireless LAN communication may be performed, for example.

  The CT clamp, for example, is attached to the main part of the distribution board 102, measures the power supplied from the system side power line to each part in the home via the distribution board 102, and wirelessly transmits power consumption information indicating the measurement result. It transmits to the adapter 103 by a radio signal.

  The power strip 101 can be connected to an electrical device, and supplies the power received from the distribution board 102 to the electrical device 121 connected to itself.

  Specifically, the power tap 101 receives power from the system-side power line via the distribution board 102 and supplies power to the electrical equipment 121 such as an air conditioner, a television, and a refrigerator connected thereto. In addition, the power strip 101 measures, for example, power supplied to the electrical device 121 connected to itself, and transmits power consumption information indicating the measurement result to the wireless adapter 103 by a wireless signal.

  The wireless adapter 103 performs communication protocol conversion processing, and transmits the power consumption information received from the power tap 101 and the CT clamp to the home gateway 104. Note that a function corresponding to the wireless adapter 103 can be incorporated in the home gateway 104.

  The home gateway 104 transmits the power consumption information received from the wireless adapter 103 to the server group 151 via the DPF 105 and the Internet 301.

  The DPF 105 outputs audio and video indicating the power consumption information received from the home gateway 104.

  The server group 151 collects power consumption information from each home. The collected information is used, for example, to create statistical data relating to the power consumption of each household so that the user can browse with the DPF 105 or the like.

  FIG. 2 is a diagram schematically showing the appearance of the power strip according to the embodiment of the present invention. FIG. 3 is a diagram showing the configuration of the power strip according to the embodiment of the present invention.

  With reference to FIG. 2 and FIG. 3, the power tap 101 includes a power transmission unit 11, a connection unit 12, a measurement unit 13, a transmission / reception unit 14, and a control unit 15.

  The connection unit 12 includes, for example, an outlet (outlet) and can be connected to the electric device 121. There may be one or more outlets.

  The power transmission unit 11 supplies power received from the outside, that is, power received from the distribution board 102 to the electrical device 121 via the connection unit 12. The power transmission unit 11 includes an inlet and a relay that connects the inlet and the outlet so as to be disconnected. The relay is used to switch between power supply to the outlet and its stop. The power transmission unit 11 operates the relay in response to the command.

  The measurement unit 13 measures at least the current supplied to the electric device 121 by the power transmission unit 11 and creates power consumption information indicating the measurement result. For example, the measurement unit 13 measures the electric power supplied to the electric device 121 by measuring the current and voltage supplied to the electric device 121. Here, the power consumption information may be a measured value itself, a value obtained by performing rounding or the like on the measured value, or power calculated from the measured current value and voltage value. It may be a value.

  The transmission / reception unit 14 transmits the power consumption information created by the measurement unit 13 to the home gateway 104 via the wireless adapter 103. The transmission / reception unit 14 can also relay the power consumption information transmitted from the other power tap 101 and transmit it to the wireless adapter 103.

  The control unit 15 can stop at least one of the measurement unit 13 and the transmission / reception unit 14. For example, the control unit 15 determines whether to stop the operation of the transmission / reception unit 14 based on the measurement result of the measurement unit 13.

[Operation]
Next, an operation when the power supply apparatus according to the embodiment of the present invention performs a power saving operation will be described in detail with reference to the drawings.

  The power strip 101 reads out and executes each step in the following flowchart and sequence from a memory (not shown). This program can be installed externally. The installed program is distributed in a state stored in a recording medium, for example.

[Power Saving Control for Transmitter / Receiver 14]
FIG. 4 is a sequence diagram defining an operation procedure when the power strip according to the embodiment of the present invention performs a power saving operation.

  With reference to FIG. 4, first, in a state in which the transmission / reception unit 14 is operating, the measurement unit 13 measures the power supplied to the electric device 121 by the power transmission unit 11 (step S <b> 1).

  Next, the control unit 15 determines whether or not to stop the operation of the transmission / reception unit 14 based on the power measured by the measurement unit 13 (step S2). The control unit 15 continues the operation of the transmission / reception unit 14 when the power measured by the measurement unit 13 is greater than or equal to the threshold value PA (YES in step S2).

  Next, the transmission / reception unit 14 transmits power consumption information indicating the measurement result of the measurement unit 13 to the home gateway 104 via the wireless adapter 103 (step S3).

  While the control unit 15 continues the operation of the transmission / reception unit 14 (YES in step S2), power measurement by the measurement unit 13 and transmission of power consumption information by the transmission / reception unit 14 are performed periodically (steps S1 and S3). ).

  On the other hand, when the power measured by the measurement unit 13 is less than the threshold PA (NO in step S2), the control unit 15 stops the operation of the transmission / reception unit 14 (step S4).

  Next, the measurement part 13 measures the electric power supplied to the electric equipment 121 by the electric power transmission part 11 (step S5).

  Next, the control unit 15 determines whether or not to resume the operation of the transmission / reception unit 14 based on the power measured by the measurement unit 13 (step S6). When the power measured by the measurement unit 13 is less than the threshold value PB, the control unit 15 maintains the stop of the operation of the transmission / reception unit 14 (NO in step S6). The threshold value PB may be the same value as the threshold value PA or may be a different value. The threshold values PA and PB are, for example, several watts.

  On the other hand, when the power measured by the measurement unit 13 is equal to or greater than the threshold value PB (YES in step S6), the control unit 15 activates the transmission / reception unit 14 to resume operation (step S7).

  Next, the transmission / reception unit 14 transmits power consumption information indicating the measurement result of the measurement unit 13 to the home gateway 104 via the wireless adapter 103 (step S8). And while the control part 15 continues operation | movement of the transmission / reception part 14 (it is YES at step S2), the power measurement by the measurement part 13 and transmission of the power consumption information by the transmission / reception part 14 are performed regularly (step S1). And S3).

  As described above, the control unit 15 stops the operation of the transmission / reception unit 14 based on the measurement result of the measurement unit 13 (step S4), and then performs the operation of the transmission / reception unit 14 based on the new measurement result of the measurement unit 13. It is determined whether or not to resume (step S6).

  Further, the control unit 15 stops the operation of the transmission / reception unit 14 based on the new measurement result of the measurement unit 13 after the transmission / reception unit 14 that has resumed operation transmits power consumption information to the home gateway 104 (step S8). It is determined again whether or not to perform (step S2).

  FIG. 5 is a sequence diagram defining an operation procedure when determining whether or not the power strip according to the embodiment of the present invention performs the power saving operation.

  Referring to FIG. 5, first, control unit 15 refers to a routing table held in power strip 101 when power strip 101 is activated or periodically. This routing table includes, for example, IDs (identifiers) of a plurality of power strips in the power management system 201 including itself, IDs of the wireless adapter 103, and the like (step S11).

  Next, based on the contents of this routing table, the control unit 15 determines whether or not its own power strip 101 should operate as a repeater for another power strip 101 (step S12).

  If the control unit 15 determines that its own power strip 101 should operate as a repeater (YES in step S12), the control unit 15 operates in the relay mode. In this relay mode, the control unit 15 continues the operation of the transmission / reception unit 14 regardless of the measurement result of the measurement unit 13. That is, the control unit 15 repeats the operations of steps S1 and S3 shown in FIG. 4 (step S13).

  On the other hand, when the control unit 15 determines that its own power tap 101 does not need to operate as a repeater (NO in step S12), the control unit 15 operates in the power saving mode. In this power saving mode, the control unit 15 performs the operation of each step shown in FIG. 4 (step S14).

[Power Saving Control for Measuring Unit 13]
FIG. 6 is a sequence diagram defining another example of an operation procedure when the power strip according to the embodiment of the present invention performs a power saving operation.

  Referring to FIG. 6, control unit 15 performs a power saving operation that continues the operation of transmission / reception unit 14 and stops the operation of measurement unit 13. In a state where the operation of the measurement unit 13 is stopped, the control unit 15 resumes the operation of the measurement unit 13 when a predetermined condition is satisfied. After the measurement unit 13 performs the measurement, the operation of the measurement unit 13 is performed again. To stop. For example, the control unit 15 restarts the operation of the measurement unit 13 every time a predetermined time elapses.

  More specifically, referring to FIG. 6, first, in a state where the operation of measurement unit 13 is stopped, control unit 15 activates measurement unit 13 when the set timer expires (YES in step S21). (Step S22).

  Next, the measurement part 13 measures the electric power supplied to the electric equipment 121 by the electric power transmission part 11 (step S23).

  Next, the transmission / reception unit 14 transmits power consumption information indicating the measurement result of the measurement unit 13 to the home gateway 104 via the wireless adapter 103 (step S24).

  Next, the control unit 15 stops the operation of the measurement unit 13. The timing for stopping the operation of the measurement unit 13 may be before or simultaneously with the transmission timing of the power consumption information by the transmission / reception unit 14 (step S25).

  Next, the control unit 15 sets a timer and waits until the timer expires (step S26).

  The control unit 15 is not limited to the configuration in which the measurement unit 13 is activated on the condition that the timer expires, but may be configured to activate the measurement unit 13 when receiving a measurement command from the home gateway 104, for example. .

[Network construction]
In the power management system 201, even if the user newly installs the power strip 101, the wireless adapter 103 and the home gateway 104 may not be communicably connected. Below, operation | movement of the power management system 201 for coping with such a case is demonstrated.

  FIG. 7 is a sequence diagram that defines an operation procedure for constructing a tap network in the power management system according to the embodiment of the present invention. In FIG. 7, as the power strip 101, the power strip 1 disposed in a place where direct communication with the wireless adapter 103 is possible, the power strip 2 newly installed in a place where direct communication with the wireless adapter 103 is not possible, and the home The operation of the gateway 104 will be described.

  Referring to FIG. 7, power supply tap 1 is in operation, that is, periodically measures the power supplied to electrical device 121 and periodically transmits power consumption information to wireless adapter 103 and supplies power to electrical device 121. For example, the power saving control is performed on the transmission / reception unit 14 (step S31).

  The power strip 2 is activated by a user operation (step S32) and cannot communicate with the wireless adapter 103 (step S33).

  Here, the home gateway 104 has, for example, a network solution button. The user installs the power strip 2 but cannot press the button because the communication connection with the wireless adapter 103 cannot be established. With this operation, the home gateway 104 starts a network construction process (step S34).

  Next, the home gateway 104 transmits a wake-up instruction to the power tap 1 (step S35).

  Next, the power strip 1 receives the wake-up instruction from the home gateway 104 and wakes up for a predetermined time, that is, does not perform power saving control for the predetermined time, and accepts a request for relay processing from another power strip (step S36). ).

  Next, since the power strip 2 cannot communicate with the wireless adapter 103, the power strip 2 transmits a relay request in order to search for a power strip serving as a repeater (step S37).

  Next, the power strip 1 receives the relay request from the power strip 2 and transmits a relay response to the power strip 2 (step S38), for example, rewrites the above routing table and operates in the relay mode (step S39). .

  The power tap 2 receives the relay response from the power tap 1, starts operation in the power saving mode (step S40), and transmits power consumption information to the power tap 1 (step S41).

  Next, the power strip 1 relays the power consumption information received from the power strip 2 and transmits it to the home gateway 104 via the wireless adapter 103 (step S42), and the own power consumption information is transmitted via the wireless adapter 103 to the home. It transmits to the gateway 104 (step S43).

  In the power management system 201, it is possible to more reliably collect power consumption information from the newly installed power strip 101 by the operation as described above.

  By the way, when the power consumption of the power strip itself increases, the purpose of using the power strip, for example, to raise the user's power saving awareness by presenting power consumption information in the home to the user using the power strip is impaired. In some cases.

  On the other hand, in the power supply apparatus according to the embodiment of the present invention, the measurement unit 13 measures at least the current supplied to the electric device 121 by the power transmission unit 11. The transmission / reception unit 14 transmits power consumption information indicating the measurement result of the measurement unit 13 to the home gateway 104. The control unit 15 can stop at least one of the measurement unit 13 and the transmission / reception unit 14.

  With such a configuration, since the power consumption of the power strip itself can be reduced, a power strip that raises the user's power saving awareness by presenting power consumption information in the home to the user using the power strip. It is possible to prevent the purpose of use from being impaired. Therefore, in the power supply device according to the embodiment of the present invention, in the device that measures the power supplied to the electrical device in order to present the power consumption information of the electrical device to the user, the power consumption of the device itself is reduced. Can do.

  In the power supply apparatus according to the embodiment of the present invention, the control unit 15 determines whether to stop the operation of the transmission / reception unit 14 based on the measurement result of the measurement unit 13.

  With such a configuration, a power saving operation can be performed at an appropriate timing based on the power consumption of the electric device 121 connected to the power tap 101. For example, when the electric device 121 connected to the power tap 101 is in a standby state, the power consumption is small, and when the necessity of notifying the user of the power consumption is low, the operation of the transmission / reception unit 14 is stopped. Power saving operation can be performed in the situation.

  Further, in the power supply device according to the embodiment of the present invention, the control unit 15 stops the operation of the transmission / reception unit 14 based on the measurement result of the measurement unit 13 and then based on the new measurement result of the measurement unit 13. Then, it is determined whether or not to resume the operation of the transmission / reception unit 14.

  With such a configuration, the power saving operation can be stopped at an appropriate timing based on the power consumption of the electric device 121 connected to the power tap 101. For example, when the electric device 121 connected to the power tap 101 returns to the normal operation from the standby state and the power consumption increases, and the necessity of notifying the user of the power consumption becomes high, the operation of the transmission / reception unit 14 is increased. The power saving operation can be stopped in an appropriate situation such as restarting.

  In the power supply apparatus according to the embodiment of the present invention, the control unit 15 transmits the power consumption information to the home gateway 104 after the resumed transmission / reception unit 14 transmits the power consumption information, based on the new measurement result of the measurement unit 13. Then, it is determined again whether or not to stop the operation of the transmission / reception unit 14.

  With such a configuration, when the power consumption of the electrical device 121 connected to the power tap 101 repeatedly increases and decreases, the power saving operation can be appropriately switched between start and stop, and the power saving effect can be enhanced.

  Moreover, in the power supply apparatus according to the embodiment of the present invention, the transmission / reception unit 14 can relay a communication signal from another apparatus to another apparatus. And the control part 15 continues operation | movement of the transmission / reception part 14 irrespective of the measurement result of the measurement part 13, when the transmission / reception part 14 relays.

  With such a configuration, in the power management system 201, when there is a power strip 101 that cannot be directly connected to the wireless adapter 103 and the home gateway 104, priority is given to the relay operation of the power consumption information from the power strip 101. it can.

  Further, in the power supply apparatus according to the embodiment of the present invention, the control unit 15 resumes the operation of the measurement unit 13 when a predetermined condition is satisfied in a state where the operation of the measurement unit 13 is stopped, and performs measurement. After the unit 13 performs the measurement, the operation of the measurement unit 13 is stopped again.

  With such a configuration, the measurement unit 13 can be activated only when it is necessary to transmit power consumption information, so that the power saving effect of the power tap 101 can be enhanced. Further, as compared with the configuration employing the power saving mode in which the operation of the transmission / reception unit 14 is stopped and the operation of the measurement unit 13 is continued, the power saving operation can always be performed while supporting the relay mode.

  In the power supply apparatus according to the embodiment of the present invention, the control unit 15 restarts the operation of the measurement unit 13 every time a predetermined time has elapsed.

  With such a configuration, it is possible to control operation stop and operation restart of the measurement unit 13 with a simple configuration such as providing a timer in the power tap 101.

  In the power management system according to the embodiment of the present invention, the CT clamp may perform the same operation as that of the power tap 101.

  In the power supply device according to the embodiment of the present invention, the control unit 15 is configured to stop one operation of the measurement unit 13 and the transmission / reception unit 14 and continue the other operation. It is not limited. The control unit 15 may be configured to stop the operations of both the measurement unit 13 and the transmission / reception unit 14. In this case, in order to continue the operation of the control unit 15, power is continuously supplied to the control unit 15 (or some circuits for power control) even when power is not supplied to the measurement unit 13 and the transmission / reception unit 14. Supply.

  The above embodiment should be considered as illustrative in all points and not restrictive. The scope of the present invention is defined by the terms of the claims, rather than the description above, and is intended to include any modifications within the scope and meaning equivalent to the terms of the claims.

DESCRIPTION OF SYMBOLS 11 Power transmission part 12 Connection part 13 Measurement part 14 Transmission / reception part 15 Control part 101 Power supply tap (power supply apparatus)
102 Distribution board 103 Wireless adapter 104 Home gateway (management device)
105 DPF
121 Electrical equipment 201 Power management system

Claims (10)

A connection part to which an electrical device can be connected;
A power transmission unit for supplying electric power received from the outside to the electrical device via the connection unit;
A measurement unit for measuring at least the current supplied to the electrical device by the power transmission unit;
A transmission unit for transmitting power consumption information indicating a measurement result of the measurement unit to a management device;
And a control unit capable of stopping the operation of at least one of the measurement unit and the transmission unit.   The power supply device according to claim 1, wherein the control unit determines whether to stop the operation of the transmission unit based on a measurement result of the measurement unit.   The control unit determines whether to restart the operation of the transmission unit based on a new measurement result of the measurement unit after stopping the operation of the transmission unit based on the measurement result of the measurement unit. The power supply device according to claim 2.   The control unit determines whether to stop the operation of the transmission unit based on a new measurement result of the measurement unit after the transmission unit that has resumed operation transmits the power consumption information to the management device. The power supply apparatus according to claim 3, wherein the determination is made again. The transmission unit can further relay communication signals from other devices to other devices,
5. The control unit according to claim 2, wherein when the transmission unit performs the relay, the control unit continues the operation of the transmission unit regardless of a measurement result of the measurement unit. 6. Power supply device.   In a state where the operation of the measurement unit is stopped, the control unit resumes the operation of the measurement unit when a predetermined condition is satisfied, and after the measurement unit performs the measurement, the measurement unit again The power supply device according to claim 1, wherein the operation is stopped.   The power supply apparatus according to claim 6, wherein the control unit restarts the operation of the measurement unit every time a predetermined time elapses. One or more power supply devices;
A power management system comprising a management device,
The power supply device
A connection part to which an electrical device can be connected;
A power transmission unit for supplying electric power received from the outside to the electrical device via the connection unit;
A measurement unit for measuring at least the current supplied to the electrical device by the power transmission unit;
A transmission unit for transmitting power consumption information indicating the measurement result of the measurement unit to the management device;
And a control unit capable of stopping the operation of at least one of the measurement unit and the transmission unit. A power management method in a power supply device provided with a connection part to which an electrical device can be connected,
Supplying electric power received from the outside to the electrical device via the connection unit;
Measuring at least the current supplied to the electrical device via the connection;
Transmitting power consumption information indicating a measurement result of the measurement unit to a management device;
Stopping at least one of the measurement unit and the transmission unit;
Restarting the operation of the measurement unit or the transmission unit that has been stopped. A power management program used in a power supply device having a connection part to which an electrical device can be connected,
On the computer,
Supplying electric power received from the outside to the electrical device via the connection unit;
Measuring at least the current supplied to the electrical device via the connection;
Transmitting power consumption information indicating a measurement result of the measurement unit to a management device;
Stopping at least one of the measurement unit and the transmission unit;
A power management program for executing the stopped measurement unit or the step of restarting the operation of the transmission unit.

Images