Patent Application
20120221164
The present invention relates to a power controller for electric devices, and a telephone device.
In recent years, power use at each household has been increasing. For example, an air conditioner and a television set are placed in each room in each house these days. Also, washing machines with driers are becoming common. Therefore, each manufacturer is supplying energy-saving products that consume less power than existing products. However, the overall power use at each household is still increasing.
Under such circumstances, power controllers for controlling power uses in houses have been suggested. Such a power controller controls operations of electric devices, based on the electric power consumed in a house (see Patent Literature 1, for example).
A power controller according to the embodiment described later performs power control in accordance with a resident's intention, even when the power control is performed on electric devices in a house. Therefore, the power controller is a device connected to electric devices via a power line, with the electric devices controlling power use, and includes: a power line communication section that communicates with the electric devices via the power line; a power information obtaining section that obtains power use information about the electric devices via the power line communication section; a display section that displays the power use information about the electric devices; an input section that receives at least one piece of power use information as input, the power use information being displayed on the display section; and a power control section that transmits, via the power line communication section, a control signal to the electric device associated with the power use information input to the input section, the control signal in which the electric device associated with the power use information input to the input section controls the power use.
The following is a description of an embodiment, with reference to the accompanying drawings. It should be noted that, in the drawings, same or similar components are denoted by same reference numerals.
Referring to first to
As shown in
Electric power information for managing the demands for electricity in the areas covered by electric power company 2 is also stored in server 30. Electric power company 2 uses the electric power information as the reference information when calculating electric power charges. Therefore, inquiries from server 30 are made to watt-hour meters 7 at predetermined intervals, and information about the amounts of electric power that have been used at respective houses 6 and have been measured by watt-hour meters 7 is collected via power lines 5. Server 30 collects the electric power information at predetermined intervals, or every hour, for example. It should be noted that server 30 does not necessarily collect the electric power data through lines (power lines 5). For example, a wireless device may be attached to each of watt-hour meters 7, and server 30 may collect the electric power data of watt-hour meters 7 via the wireless devices.
Referring now to
As shown in
Next, the mechanism to collect the power use information from the respective electric devices and perform control in home energy management system 10 is described. Here, a case where the telephone device 20 is equipped with a function to control the respective electric devices, and the power use information is to be collected is described.
Air conditioner 11 includes power monitoring section 11a, and power monitoring section 11a transmits the results of monitoring of power use detected by a power detecting section (not shown) as the power use information to telephone device 20. Power monitoring section 11a includes the power detecting section that detects power use, and a power line communication section (not shown) that performs power line communications using power line 9. Likewise, electric lamp 12 includes power monitoring section 12a, and television set 13 includes power monitoring section 13a. Electric lamp 12 and television set 13 transmit results of monitoring of power use as the power use information to telephone device 20. Power line communicating sections of power monitoring section 11a, power monitoring section 12a, and power monitoring section 13a receive control signals from telephone device 20, and output control signals to an internal power control section (not shown). By this means, air conditioner 11, electric lamp 12, and television set 13 can perform power control such as an energy saving mode enabling operation or an operation stop in accordance with the control signals from telephone device 20.
Telephone device 20 includes power controller 21 described later. Power controller 21 transmits a control signal for controlling electric power via power line 9, and controls power use by the respective electric devices. As the communication protocol, ECHONET (a registered trade name: Energy Conservation and Homecare Network) or the like is used, to perform communications among devices manufactured by different manufacturers. The electric device on which power controller 21 is mounted is not limited to telephone device 20. Power controller 21 may be mounted on any device that can easily obtain the power use information from electric power company 2 (
As shown in
Commercial power supplied from power line 5 via watt-hour meter 7 is supplied to power line 9 in house 6 via breaker 83 that prevents overcurrent conditions. When the total power use at each house 6 exceeds the amount of electric power specified in the contract with electric power company 2, breaker 83 is activated, and the power supplies to the electric devices connected to breaker 83 are suspended. As a result, the power sources of the respective electric devices are reset (initialized), and various inconveniences are caused. For example, timer recording information in television set 13 is erased, and timer setting in a rice cooker is initialized and cancelled.
Each manufacturer is supplying energy-saving products with lower power consumption than that of existing products. However, the number of electric appliances used at each house is increasing, and the power use at each house is on a rising trend. A large number of electric devices are set in house 6. For example, electric devices with the latest functions, such as an air purifier, an air conditioner equipped with an air purifier, and a thin-screen television set, are set in each of the rooms in house 6. Also, electric devices that consume large amounts of electric power, such as washing machines with driers and dish washers with driers, are becoming common.
In such circumstances, there has been an attempt to control the power use by the electric devices in house 6 by setting a power controller in house 6.
As a comparative example to understand the embodiment more easily, an existing power controller is first described.
If the total power use in house 6 is determined to be larger than the amount of electric power specified in the contract with electric power company 2, an existing power controller stops the corresponding electric device based on predetermined order of priorities, to reduce the power use. As a result, the breaker of distribution board 8 in house 6 is prevented from tripping, and all the electric devices in house 6 are prevented from being disabled. However, the circumstances of the residents change by the minute. Therefore, if the electric devices automatically stop regardless of the awareness of the residents, inconveniences such as electric lamp 12 going off might occur even when there is an unexpected visitor, for example.
Electric power company 2 is also considering a plan to vary electric power charges in accordance with the demands for electricity in the area, such as to make the nighttime power charges lower than the daytime power charges. For example, there has been a suggestion to manage the electric power in an entire power grid, calculate the electric power charges by the hour, and provide power charge information by combining watt-hour meter 7 having a communication function (such as an AMI: Advanced Metering Infrastructure) with a power grid (a smart grid formed by applying information technology to a power grid, for example). However, where the power use within house 6 does not exceed the amount of electric power specified in the contract with electric power company 2, the existing power controller is not activated, and cannot perform power control in accordance with electric power charges and the circumstances of residents. Therefore, the existing power controller cannot perform power control in accordance with the intention of a resident, such as putting priority on the use of the electric devices or on the electric power charges. As a result, the power use in house 6 cannot be reduced.
To counter this problem, power controller 21 (
Next, a specific structure is described through an example of telephone device 20 having power controller 21 mounted thereon.
As shown in
Button section 211b includes ten number input buttons “0” through “9”, and control buttons such as “#” and “*” buttons. Using the number input buttons, a telephone number or selection information for selecting a menu number is input.
Handset 22 includes a speaker (not shown) that outputs sound, and a microphone (not shown) to which sound is input. Using the speaker and the microphone, handset 22 performs audio communications.
Telephone device 20 also includes power controller 21 that includes HEMS button 211a, HEMS lighting section 210, and display section 212 on the surface side of telephone device 20. HEMS button 211a operates in association with button section 211b. HEMS lighting section 210 has a lighting color that changes with operations on HEMS button 211a.
HEMS button 211a is used to register an electric device to be subjected to power control, for example. HEMS button 211a is operated to enter into a registration mode, and the number input buttons of button section 211b are used to input the ID number of the electric device to be registered. As HEMS button 211a is operated, HEMS lighting section 210 changes the lighting color to “red' during the registration mode, and to “green” or the like when the setting is completed. In this manner, a user is notified of the setting status. Display section 212 displays operation information about the registration and power control to residents. Power controller 21 will be described later in detail.
Next, the circuit configuration of telephone device 20 is described.
As shown in
Communication section 23 is connected to communication link 100 outside house 6. Telephone device 20 can communicate with other houses 6 and server 30 of power management center 3 of electric power company 2 via communication link 100. Electric power company 2 (
Overall control section 24 controls power controller 21, handset 22, and communication section 23.
Telephone device 20 also includes power source section 25. Power source section 25 supplies power to the respective circuit sections and units, and is connected to power line 9 in house 6.
In this structure, telephone device 20 is always connected to communication link 100 to perform audio communications. Therefore, with power controller 21 being incorporated into telephone device 20, the power charge information transmitted from electric power company 2 can be obtained without any addition of a circuit or the like. Alternatively, electric power company 2 may transmit power charge information, using the power grid of power line 5. In that case, power controller 21 obtains the power charge information via power line 5 and power line 9.
Next, the structure of power controller 21, which characterizes this embodiment, is described in detail.
Power controller 21 includes power line communication section 213, input section 211, power information obtaining section 214, device information storage section 215, candidate creating section 216, display section 212, and power control section 218.
Power line communication section 213 performs power line communications, and communicates with distribution board 8, air conditioner 11, electric lamp 12, and television set 13 via power line 9.
Input section 211 includes HEMS button 211a and button section 211b. Registration information about the electric devices to be subjected to power control and to be registered, such as distribution board 8, air conditioner 11, electric lamp 12, and television set 13, and device selection information to be used at the time of power control are input to input section 211. Button section 211b is used as the dial buttons of the telephone function. At the time of registration, HEMS button 211a and button section 211b are made to cooperate, and the subject device is registered. For example, when HEMS button 211a is pressed, information about the registerable devices is displayed on display section 212 described later. A resident then inputs the select numbers of the devices to be registered through button section 211b.
Power information obtaining section 214 obtains power use information about the electric devices registered through the operation of input section 211, such as distribution board 8, air conditioner 11, electric lamp 12, and television set 13, via power line communication section 213.
Device information storage section 215 stores the power use information about distribution board 8, air conditioner 11, electric lamp 12, and television set 13, each of which obtained by power information obtaining section 214.
Candidate creating section 216 creates information about candidate combinations of devices to be subjected to power control such as an energy saving mode enabling operation, among the registered devices: air conditioner 11, electric lamp 12, and television set 13.
Display section 212 displays the electric devices to be put into the energy saving mode, and the candidate combinations of electric devices to be put into the energy saving mode. By this means, a resident can immediately check the devices to be subjected to power control, and can consciously determine power control.
Power control section 218 controls the powers to be used by air conditioner 11, electric lamp 12, and television set 13 which are registered. Power control section 218 controls the power to be used by the candidate combination of electric devices selected through input section 211, among the candidate combinations of electric devices displayed on display section 212. Power control section 218 then transmits a control signal for the energy saving mode to the subject electric devices via power line communication section 213 and power line 9, and the target devices enter into the energy saving mode. Accordingly, the power to be used by the subject electric devices in house 6 can be reduced. The energy saving mode will be described later in detail.
With power controller 21 having the above structure, a resident can consciously select, through button section 211b, the number of a desired candidate from the information about the candidate combinations of electric devices to be subjected to power control, and can consciously conduct power control on the electric devices in house 6. Accordingly, power control can be performed in accordance with a resident's intention, even when the power control is performed on the electric devices in house 6.
Power controller 21 also includes electric power charge calculating section 217. Electric power charge calculating section 217 calculates individual electric power charges based on power charge information supplied from electric power company 2 and the power use information about air conditioner 11, electric lamp 12, and television set 13. Based on the calculated individual electric power charges, electric power charge calculating section 217 calculates a total electric power charge based on the individual electric power charges for each of the candidate combinations of electric devices. Electric power charge calculating section 217 calculates individual electric power charges, and a total electric power charge based on the individual electric power charges every time power charge information is transmitted from electric power company 2. Electric power charge calculating section 217 also calculates a total electric power charge based on the actual total power use (the power use information) detected by power monitoring section 80 of distribution board 8.
Where electric power charge calculating section 217 is provided, display section 212 displays total electric power charge information based on the individual electric power charges for combined electric devices, as well as the candidate combinations of electric devices. Display section 212 updates the display contents every time electric power charge calculating section 217 newly calculates individual electric power charges and a total electric power charge. Accordingly, a resident can immediately check the latest electric power charge. While keeping the electric power charge in mind, the resident can select, through button section 211b, the number of a desired candidate among the information about the candidate combinations of electric devices to be subjected to power control, and thereby consciously conduct power control on the electric devices in house 6.
Referring now to
As shown in
A resident checks the electric power charge in accordance with message 212a. If there is no urgent matter or the like, the resident presses the “#” button in accordance with message 212b, to enable power control such as putting electric devices into the energy saving mode. If there is an urgent matter such as having a visitor, on the other hand, the resident presses the “*” button in accordance with message 212b, to disable power control such as putting electric devices into the energy saving mode. In this manner, power controller 21 can perform power control in accordance with the intention of a resident.
When a resident presses the “#” button in accordance with message 212b, power controller 21 further displays message 212c and message 212d on display section 212, as shown in
From the information about the candidate subject devices, information about combinations of devices in ascending order of total electric power charges is displayed in message 212d. The total electric power charge based on the individual electric power charges of combined electric devices is also displayed in message 212d. By this means, the power use in house 6 is displayed as information about an electric power charge that can be instinctively evaluated, and the information about combinations of devices is displayed in ascending order of total electric power charge. Accordingly, a resident can easily make a comparison between amounts, and can readily reach a decision. In the example illustrated in
By checking message 212d, a resident can immediately select (2) when he/she needs the light of electric lamp 12 to read a document in the nighttime, for example, thereby making the selecting operation easy. In this manner, power controller 21 can perform instinctive input operations, and easily perform power control in accordance with the intention of a resident.
In the example illustrated in
Instead of electric power charges, total power consumptions or individual power consumptions by respective electric devices (or combinations of electric devices) may be displayed.
In the cases illustrated in
In a case where a resident selects air conditioner 11 and television set 13 to be put into the energy saving mode at time t1, for example, the power use by air conditioner 11 decreases by 20% (decreases from 1.0 kW/h to 0.8 kW/h, for example), and the power use by television set 13 decreases by 20% (decreases from 0.5 kW/h to 0.4 kW/h, for example). When air conditioner 11 is put into the energy saving mode, the preset indoor temperature for cooling is changed from 25° C. to 28° C., for example. Likewise, the luminance of the display screen of television set 13 drops by 20%.
Likewise, in a case where a resident further selects electric lamp 12 to be put into the energy saving mode at time t2, the power use by electric lamp 12 decreases by 33% (decreases from 0.15 kW/h to 0.1 kW/h, for example). When electric lamp 12 is put into the energy saving mode, the luminance drops by 33%, for example.
In a case where a resident has an urgent matter such as an unexpected visitor, and disables all the energy saving mode at time t3, the operation mode returns to the normal operation mode in which air conditioner 11 uses 1.0 kW/h, television set 13 uses 0.5 kW/h, and electric lamp 12 uses 0.15 W/h.
In a case where air conditioner 11, electric lamp 12, and television set 13 are put into the energy saving mode at the same times as those set in
Referring now to
As shown in
Power controller 21 then displays a message for enabling and disabling the energy saving mode on display section 212 (S108).
If the energy saving mode is disabled through the “#” button of input section 211 for the convenience of a resident (S110), power controller 21 disables the energy saving mode for each electric device in accordance with a control signal for disabling the energy saving mode, and each electric device is reset in the normal operation mode (S112).
If the energy saving mode is selected through the “#’ button of input section 211 (S110), on the other hand, power controller 21 makes inquiries to power monitoring sections 11a, 12a, and 13a of the electric devices registered as the devices to be subjected to power control, which are air conditioner 11, electric lamp 12, and television set 13, about the power use. By doing so, power controller 21 collects the power use information about the respective electric devices. Power controller 21 then stores the collected power use information about the respective electric devices into device information storage section 215 (S114).
Power controller 21 then creates information about candidate combinations of devices to be subjected to power control, based on the power use information about the respective electric devices stored in device information storage section 215. Based on the power charge information obtained from electric power company 2, and the power use information about air conditioner 11, electric lamp 12, and television set 13 stored in device information storage section 215, individual electric power charges are calculated. Based on the calculated individual electric power charges, a total electric power charge based on the individual electric power charges is calculated for each of the candidate combinations to be selected. It should be noted that power controller 21 calculates individual electric power charges and a total electric power charge based on the individual electric power charges every time power charge information is transmitted from electric power company 2.
Power controller 21 then displays, on display section 212, the information about the candidate combinations of devices to be put into the energy saving mode in the ascending order of electric power charges among the candidate combinations of electric devices, and the candidate combinations of electric devices each accompanied by total power charge information (S116). Display section 212 updates the display contents every time electric power charge calculating section 217 newly calculates individual electric power charges and a total electric power charge. Thereafter, (S100) through (S116) are repeatedly carried out. In this manner, power controller 21 newly calculates and displays, on display section 212, individual electric power charges and total electric power charges every time power charge information is transmitted from server 30 of electric power company 2. Accordingly, a resident can select electric devices to be subjected to power control, while keeping new electric power charges in mind. Thus, the resident can determine power control in accordance with the latest electric power charges.
Power controller 21 awaits until selection information for selecting a candidate combination of electric devices is input to input section 211 (S118), and controls the power use by the candidate combination of electric devices selected in accordance with the input selection information. That is, power controller 21 transmits a control signal for the energy saving mode to target electric devices among air conditioner 11, electric lamp 12, and television set 13, and enables the energy saving mode (S120).
According to this embodiment described above, as shown in
With this structure, a resident can consciously select a device to he subjected to energy saving from the candidate combinations of electric devices displayed on display section 212. Accordingly, power control can be performed in accordance with a resident's intention, even when the power control is performed on the electric devices in house 6.
Since power controller 21 for electric devices is mounted on telephone device 20, a resident can consciously select devices to be subjected to power control among the candidate combinations of electric devices displayed on display section 212 provided on telephone device 20, and accordingly, a resident can consciously conduct power control on the electric devices in house 6.
Also as power use information about the electric devices is displayed on display section 212, a user can select an electric device to be put into the energy saving mode while checking the power use information about the electric devices.
As shown in
That is, as shown in
As shown in
Power controller 21 is mounted on telephone device 20, but the present invention is not limited to that. Power controller 21 may be mounted on some other electric devices, such as television set 13, a facsimile machine, an intercom, or a special-Purpose controller.
As described above, when the total power use in a house is determined to exceed the amount of electric power specified in the contract with the electric power company, an existing power controller automatically stops electric devices in predetermined priority order.
However, the circumstances of residents change by the minute. Therefore, if the electric devices automatically stop regardless of the awareness of the residents, inconveniences such as electric lamp going off might occur even when there is an unexpected visitor, for example. In a case where the power use in a house does not exceed the amount of electric power specified in the contract with the electric power company, the power use in the house cannot be reduced. As described above, an existing power controller cannot perform power control in accordance with a resident's intention regarding the usage priorities or power use reduction priorities among electric devices.
Therefore, an object of the above described embodiment is to enable power control in accordance with a resident's intention, even when the power control is performed on electric devices in a house.
In view of this, the power controller for electric devices according to the above described embodiment controls the power use by electric devices connected to a power line in a house, and includes: power line communication section that communicates with the electric devices via the power line; an input section that receives registration information about the electric devices and selection information as input; a power information obtaining section that obtains, via the power line communication section, power use information about electric devices registered at the input section; a candidate creating section that creates information about candidate combinations of electric devices to be subjected to power control, based on the power use information about the respective electric devices obtained by the power information obtaining section from the registered electric devices among the electric devices; a display section that displays the information about the candidate combinations of electric devices; and a power control section that controls the power use by each of the registered electric devices. The power control section controls the power use by a candidate combination of electric devices selected in accordance with the selection information input to the input section.
The telephone device according to the above described embodiment characteristically has the above described power controller for electric devices mounted thereon.
The power controller for electric devices according to the above described embodiment controls the power use by electric devices connected to a power line in a house, and includes: a power line communication section that communicates with the electric devices via the power line; an input section that receives registration information about the electric devices and selection information as input; a power information obtaining section that obtains, via the power line communication section, power use information about electric devices registered at the input section; a candidate creating section that creates information about candidate combinations of electric devices to be subjected to power control, based on the power use information about the respective electric devices obtained by the power information obtaining section from the registered electric devices among the electric devices; a display section that displays the information about the candidate combinations of electric devices; and a power control section that controls the power use by each of the registered electric devices. The power control section controls the power use by a candidate combination of electric devices selected in accordance with the selection information input to the input section. By this means, a resident can consciously select devices to be subjected to power control from the candidate combinations of electric devices displayed on the display section, and can consciously conduct power control on the electric devices in the house. For example, where the energy saving mode is enabled as power control on the electric devices, the power use in the house can be reduced.
By this means, power control can be performed in accordance with a resident's intention, even when the power control is performed on electric devices in a house.
Also, the above described power controller for electric devices is mounted on the telephone device according to the above described embodiment. Accordingly, a resident can consciously select devices to be subjected to power control from the candidate combinations of electric devices displayed on the display section, and can consciously conduct power control on the electric devices in the house.
Specific structures of the present invention are not limited to the above described embodiment, and various changes and modifications may be made to it without departing from the scope of the invention.
All the contents of the specification, drawing, and abstract included in Japanese Patent Application No. 2009-258600, filed on Nov. 12, 2009, are incorporated herein by reference.
A power controller for electric devices in the above described embodiment controls the power use by the electric devices connected to a power line in a house, and includes: a power line communication section that communicates with the electric devices via the power line; an input section that registration information about the electric devices and selection information as input; a power information obtaining section that obtains power use information about electric devices registered at the input section via the power line communication section; a candidate creating section that creates information about candidate combinations of electric devices to be subjected to power control, based on the power use information about the respective electric devices obtained by the power information obtaining section from the registered electric devices among the electric devices; a display section that displays the information about the candidate combinations of electric devices; and a power control section that controls the power use by each of the registered electric devices. The power control section controls the power use by a candidate combination of electric devices selected in accordance with the selection information input to the input section. By this means, a resident can consciously select a device to be subjected to power control from the candidate combinations of electric devices displayed on the display section, and can consciously conduct power control on the electric devices in the house.
Accordingly, even when power control is performed on the electric devices in the house, the power control can be performed in accordance with a resident's intention, and the present invention can be applied to a telephone device or the like having the power controller mounted thereon.
| Number | Date | Country | Kind |
|---|---|---|---|
| 2009-258600 | Nov 2009 | JP | national |
This application is a continuation (in-part) of International Patent Application No. PCT/JP2010/006669, filed on Nov. 12, 2010, the disclosure of which is incorporated herein by reference in its entirety. International Patent Application No. PCT/JP2010/006669 is entitled to the benefit of Japanese Patent Application No. 2009-258600, filed on Nov. 12, 2009, the disclosure of which is incorporated herein by reference in its entirety.
| Number | Date | Country | |
|---|---|---|---|
| Parent | PCT/JP2010/006669 | Nov 2010 | US |
| Child | 13467958 | US |
