JP2002367619A - Household energy control system and device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a household energy control system and device enabled to easily perform a comprehensive control of home use energy. SOLUTION: Electric power and heat are generated by a fuel cell 11 using fuel gas, and the hot water, made by heating city water by the heat generated by the fuel cell, is stocked in a hot water tank 13, and supplied to the bath or the like. The generated energy volume is measured by a hot water supply energy meter 14 and an electricity volume meter 15, and the consumption volume of fuel gas, city water, and electric power at home are measured by a gas meter 16, a water meter 17, and an electric power meter 18. Respective generation volume and used volume are transmitted to a control center 20 through a communication device 12. Addition to respective generation volume and used volume, respective costs are displayed at the displaying device 19, therefore, household energy saving property and cost effect are enabled to judge.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a home energy management system and apparatus for managing usage of home energy such as fuel gas and tap water.

[0002]

2. Description of the Related Art Heretofore, generally, energy companies such as fuel gas and water supply have individually installed meters in their homes to perform meter reading and manage energy consumption and fees corresponding thereto. In addition, for equipment installed in a home, such as a home cogeneration system, a business operator manages the equipment individually using a communication function.

[0003]

The energy infrastructure such as fuel gas, water and electric power at home is individually managed by a supplying company, so that it is possible to judge whether the usage amount is increased or decreased individually. It is difficult to comprehensively save energy.

Further, a function of collectively transmitting and receiving various kinds of information in the home has been realized by utilizing a mechanism for centrally managing the communication function of the home gateway. A communication interface with the meters is required, and each meter does not always use the same communication medium. It is necessary to prepare an interface corresponding to each communication medium.

[0005] It is an object of the present invention to provide a home energy management system and apparatus which can easily perform comprehensive management of energy used at home.

[0006]

According to the present invention, there is provided (a) a measuring means for measuring at least one of fuel gas, tap water, electric power and kerosene supplied to a household; Household energy management comprising: hot water obtained by heating tap water using at least one of kerosene as a heat source; hot water supply means for supplying the hot water; and transmission means for transmitting data on the amount of use obtained by the measurement means. Equipment and
(B) a home energy management system comprising: a central management device including a receiving unit for receiving usage data transmitted from the home energy management device.

Further, in the present invention, the home energy management device includes an energy generating means for generating electric power and heat at home using fuel gas, and the hot water supply means includes electric power or heat generated by the energy generating means. Is used as a heating heat source of tap water.

The present invention also provides (a) energy generating means for generating electric power and heat at home using fuel gas, and hot water supply means for supplying hot water in which tap water is heated by the heat generated by the energy generating means. And fuel gas usage measuring means for measuring fuel gas usage at home, tap water usage measuring means for measuring tap water usage at home, and data of the fuel gas usage and tap water usage. A home energy management device comprising:
(B) A home energy management system characterized by comprising a central management device having a receiving means for receiving data of fuel gas usage and tap water usage transmitted from the home energy management device.

According to the present invention, the home energy management device includes hot water supply means such as a hot water supply heater and a hot water supply device, and the hot water supply means supplies fuel gas such as city gas, electric power such as commercial AC power, and kerosene. At least one of them is a heat source,
Heating the tap water to generate hot water, supplying the hot water, and using at least one of the fuel gas, tap water, electric power and kerosene thus used by the measuring means,
The usage amount data thus obtained is transmitted by the transmission means of the home energy management device, and is provided to the reception means provided in the central management device. For example, hot water supplies use fuel gas to generate electricity and heat at home,
Hot water is supplied by supplying warm water in which tap water is heated by the generated heat. Since the amount of fuel gas consumption and tap water consumption at home is measured and transmitted to the central management device, comprehensive management of various types of energy used in each household can be easily and collectively performed by the central management device. Can be.

[0010] The energy generating means provided in the home energy management device generates electric power and heat at home using fuel gas, and heats tap water by the hot water supply means using the electric power or heat obtained as a heating source. I do.

In the present invention, the energy generating means is a fuel cell.

According to the present invention, since the energy generating means is a fuel cell, a structure having a mechanism for linking with a commercial power supply is used, so that the management of the amount of power consumed in the home can be unified. It can be carried out. Further, since the fuel cell is an outdoor device that consumes fuel gas and water, it can easily function as a supply port for each energy infrastructure.

In the present invention, the energy generating means includes a solar cell as a power source.

According to the present invention, the energy generation means includes a solar water heater and a solar cell.

According to the present invention, the energy generating means may include a solar cell, and may obtain electric power from the solar cell, and may further include a solar water heater for heating tap water using solar heat. Is also good.

Further, in the present invention, the home energy management device includes an electric power consumption measuring unit for measuring electric power consumption at home, and the transmitting unit transmits electric power consumption data to a central management device. It is characterized by doing.

According to the present invention, the home energy management device measures the amount of electric power used in the home and transmits it to the central management device. It can be done easily.

Further, in the present invention, the home energy management device includes a display means, and a generation amount measuring means for measuring generated electric energy and heat quantity, wherein the display means comprises:
The fuel gas usage, the tap water usage, and the power usage, the power generation and the heat generation, and the charge corresponding to each usage are displayed.

According to the present invention, the home energy management device measures the amount of generated electric power and the amount of heat, and uses the amount of fuel gas, the amount of tap water and the amount of electric power, and the amount of electric power and the amount of heat. Since each generation amount and the charge corresponding to each usage amount are displayed, it is possible to judge energy saving and cost effectiveness at home.

Further, in the present invention, the home energy management device includes a display unit, and the display unit displays the usage amount measured by the measurement unit or a fee corresponding to the usage amount.

Further, in the present invention, the display means further displays the amount of generated power and the amount of heat generated by the energy generating means.

According to the present invention, the amount of fuel gas, tap water, electric energy, kerosene, etc. is determined by display means provided in the home energy management device, for example, a liquid crystal display panel or a cathode ray tube. At least one of the charges corresponding to each of the usage amounts is displayed, and thereby the usage amount of the energy in the home can be easily grasped. Furthermore, according to the present invention, the amount of generated power or the amount of heat generated by the energy generating means is displayed on the display means, whereby the amount of power and the amount of heat generated at home can be easily grasped.

The display means may have a configuration for visual display, such as a liquid crystal display panel or a cathode ray tube, or may have a configuration for outputting sound with a voice synthesis circuit.

In the present invention, the display means displays at least one of the past usage amounts, the past charges, the past generated power amount, and the past heat generation amount. Features.

In the present invention, the display means may display the usage amount in a plurality of periods among the charges in a plurality of periods, the generated power amount in a plurality of periods, and the heat generation amount in a plurality of periods. Is displayed.

According to the present invention, the display means displays at least one past value among the above-mentioned usage amount, charge, generated power amount, and heat value, and displays the past value for each of a plurality of periods. Can be displayed. As a result, it is possible to easily grasp the past usage status and power generation status of fuel gas, tap water, electric power, and kerosene.

According to the present invention, since the display means displays each past usage amount, each generation amount and the fee, it is possible to judge the energy saving and cost effect at home in more detail. Further, since the display means displays each usage amount, each generation amount, and the charge for a plurality of periods, it is possible to determine the energy saving and cost effect at home in more detail.

In the present invention, the display means displays the respective usage amounts and a preset target usage amount for each of the usage amounts so as to be comparable.

According to the present invention, not only the respective usage amounts but also the target usage amounts with respect to the usage amounts are displayed in a comparable manner by the display means. Is displayed for easy comparison with
This makes it easy to determine whether the amount of fuel gas, water, electricity and kerosene used is larger or smaller than the target amount of use, and it is easy to take future measures for each of the above amounts of use. And energy saving can be achieved.

In the present invention, the display means displays the fuel gas usage, the power consumption, and the kerosene usage.
It is characterized in that it is displayed in a calorie unit J [Joule].

According to the present invention, the display means displays, for example, the amount of fuel gas used in units of m ³ and the amount of used power in units of kWh.
May be displayed, and the amount of kerosene used may be displayed in units of l (liter). However, since these units are different from each other, it is difficult for the user to grasp the energy consumption. Therefore, in the present invention, the fuel gas, the electric energy and the kerosene consumption are not represented by the individual units but are represented by the heat unit J [Joule]. As a result, the amount of fuel gas, electric power and kerosene used can be easily grasped as energy. The calorific value unit is J [Joul
e], for example, may be displayed in MJ [Mega Joule], and other units representing energy common to the used amount may be used.

Further, in the present invention, the transmitting means includes:
Information detected by a device related to safety installed in the home or information related to the operation state of the home energy management device is transmitted to the central management device to be notified.

For example, a gas leak detector or a leak detector directly affects energy management, and a room sensor or a window opening / closing sensor affects energy use. Security devices) are often more convenient to handle in connection with energy management.

According to the present invention, the transmitting means transmits the information detected by the device related to safety installed in the home or the information related to the operation state of the home energy management device to the central management device, so that the home security and the home security can be transmitted. It is possible to quickly respond to abnormalities in the home energy management device.

The present invention also provides an energy generating means for generating and generating heat at home using fuel gas, a hot water supply means for supplying hot water heated by tap water with the heat generated by the energy generating means, A home energy management device comprising a fuel gas usage measuring means for measuring fuel gas usage and a tap water usage measuring means for measuring tap water usage at home.

The present invention also provides a measuring means for measuring at least one of fuel gas, tap water, electric power and kerosene supplied to a household, and at least one of fuel gas, electric power and kerosene. A household energy management apparatus characterized by including hot water obtained by heating tap water as a heat source, and a hot water supply means for supplying the hot water.

According to the present invention, a home energy management system generates electric power and heat at home using fuel gas,
Hot water is supplied by supplying warm water in which tap water is heated by the generated heat. Since the amount of fuel gas used and the amount of tap water used at home are measured, comprehensive management of energy used at home can be easily performed.

Further, according to the present invention, the measuring means of the home energy management device measures at least one usage of fuel gas, tap water, electric power and kerosene supplied to the home by the measuring means, and is thus obtained. The used amount may be displayed on the display means, for example, so that the used amount can be easily grasped. These fuel gas, electric power and kerosene are used as a heat source of the hot water supply means, and You can heat the water and supply hot water,
Alternatively, it can be used for hot water supply and heating. Thus, in the present invention, comprehensive management of energy used at home can be easily performed.

Further, the present invention provides a transmitting means for transmitting to the central management device the fuel gas usage amount, the data of the tap water usage amount, the power usage amount, the kerosene usage amount, or the information on the operation state of the home energy management device. It is further characterized by including.

According to the present invention, data of at least one of fuel gas usage, tap water usage, power usage, and kerosene usage is transferred to the central management unit, or A detection device for detecting the operation state of the energy management device is additionally provided, and information on the operation state of the home energy management device detected by the detection device is transmitted to the central management device. Thus, in the central management device, various types of energy such as fuel gas, electric power and kerosene and tap water used in each household and tap water, and furthermore, the operation state of the home energy management device, for example, whether a failure has occurred,
Comprehensive management including abnormality detection such as whether the measured value of the usage amount is an abnormal value can be easily and collectively performed by the central management device.

[0041]

FIG. 1 is a diagram showing the configuration of a home energy management system (hereinafter, also referred to as a "management system") 1 according to an embodiment of the present invention. The management system 1 includes a home energy management device (hereinafter also referred to as “management device”) 10 and a management center 20 which is a central management device. The management device 10 measures the amount of power purchased from the fuel cell 11, the communication device 12 performing the transmission operation, the hot water tank 13, the hot water supply energy meter 14, the generated power amount meter 15, the gas meter 16, the water meter 17, and the power supply company. A power meter 18 and a display device 19.

The fuel cell 11 is an energy generating means for generating electric power and heat using hydrocarbons as fuel. The fuel cell 11 supplies, for example, a gas obtained by reforming natural gas or city gas to a hydrogen-rich fuel gas to the anode side as a fuel, and supplies oxygen-containing air to the cathode side as an oxidant to form hydrogen ions and oxygen ions. The gases react to produce electrical energy, heat energy and water. The chemical reaction proceeds under high-temperature conditions, and at this time, tap water supplied from a water pipe is heated to produce hot water. Hot water storage tank 13
Is a hot water supply means that uses the waste heat of power generation to store tap water heated in the fuel cell 11 as hot water and supply it to a bath or a kitchen in a home. Hot water supply energy meter 14
Is a generation amount measuring unit that measures the amount of heat generated in the fuel cell 11 and supplies hot water to the pipeline 36. The generated power amount meter 15 is a generated power amount measuring unit that measures the amount of power generated by the fuel cell 11 and supplies the generated power to the distribution board 43 via the line 37. The gas meter 16 measures the amount of fuel gas used in the home, which is the sum of the amount of fuel gas used in the fuel cell 11 and the amount of fuel gas used in the kitchen or the like, and supplies the fuel gas to the pipeline 38. It is a fuel gas consumption measuring means. The water meter 17 measures the amount of tap water used in the home by combining the amount of tap water stored as hot water in the fuel cell 11 and the amount of tap water used in baths, kitchens, washrooms, and the like. ,
This is a means for measuring the amount of tap water used to be supplied to the pipe 39. The power meter 18 measures the fuel cell 11 based on the amount of power used at home by loads 42 such as lighting and
It is a used electric energy measuring means for measuring the electric energy of the shortage obtained by subtracting the electric energy generated by the above, that is, measuring the electric energy purchased from the electric power supplier. Power meter 18
Is supplied to the distribution board 43 via the line 40. The communication device 12 is a communication unit that transmits the data of the fuel gas usage amount, the tap water usage amount, and the power usage amount measured by each meter to the management center 20 via the line 41 as described above. Communication lines include public telephone lines, mobile phones, and PHS (Personal Handyhone System).
Use wireless telephone lines such as m) and the Internet.

The display device 19 displays on the screen the above-mentioned respective usage amounts, the amount of power and heat generated by the fuel cell 11, and the charges corresponding to the respective usage amounts calculated using the usage fee information. Means. That is, the display means 19
Has a processing circuit 27 such as a microcomputer that receives and calculates the outputs of the meters 14 to 18, and a storage device 26 is connected to the processing circuit 27. Storage device 2
Numeral 6 stores the measurement data and the calculation result received by the processing circuit 27 in order of elapse of time. The processing circuit 27 includes a display 28 having a display screen such as a liquid crystal display panel or a cathode ray tube.
Causes a display operation to be performed. Data representing the measurement results of the meters 14 to 18 and the like are provided to the communication device 12, the output of the processing circuit 27 is also provided, and a signal is transmitted to the management center 20. The communication device 12 includes an arithmetic device 29, and can also receive signals from the management center 20 and perform arithmetic processing.

As described above, the management device 10 is provided with a meter of the total energy consumed at home, and the total management of energy can be easily performed by measuring the amount of use and generation.

FIGS. 2 to 5 show the display body 28 of the display device 19.
It is a figure which shows the example of a screen display by. The display device 19 displays the result of totaling each usage amount, each generation amount, and fee over a plurality of periods such as one day, one week, one month, one year, etc. by the operation of the processing circuit 27 and the storage device 26. It is possible to Further, these totalized results can be stored in the storage device 26 by the processing circuit 27 and displayed on the display device 19 for comparison as past usage amounts, generation amounts, and charges. FIG. 2A shows the amount of usage, the amount of generation, and the fee per day. Specifically, fuel gas usage (m ³ ), electricity usage (kWh), water usage (m ³ ), and hot water usage (MJ) of the entire household
And the charge (yen) for each usage amount, the fuel gas usage amount (m ³ ), the electricity generation amount (kWh), the water usage amount (m ³ ), the hot water generation amount (MJ), and the respective usage amounts of the fuel cell 11,
The charge (yen) for the generated amount is displayed. Further, the maximum amount of each usage amount and the generation amount per time and the time zone in which the maximum amount is recorded are displayed. From these data, it is possible to determine a time zone, a device, and the like in which household energy consumption (money consumption) is large. In FIG. 2B, the same items as those in FIG. 2A are displayed as one-month total results. In addition, the maximum amount of each used amount and the generated amount per hour and the date when the maximum amount is recorded are displayed.

FIG. 3 shows the same items as those shown in FIG. 2, but FIG. 3 (a) shows the results of the previous day and FIG. 3 (b) shows the results of the previous month. By comparing with (b), it is possible to judge energy saving and cost effectiveness. 4 (a) shows the same day of the previous week, FIG. 4 (b) shows the same month of the previous year, FIG. 5 (a) shows the same day of the previous month, and FIG. 5 (b) shows the same day of the previous year. I have.

As described above, it is possible to manage all the energy in the home at a fee, and to comprehensively manage all the household equipment including the fuel cell 11 from the viewpoint of energy saving and cost. Can be. In addition, since the operation status of the fuel cell 11 can be monitored, it serves as a guideline for improving the operation efficiency.

The management center 20 is the center communication device 2
1, a CPU (Central Processing Unit) 22, a ROM (Read Only Memory) 23, and a RAM (Random Access Memory) 24. The center communication device 21 is a receiving unit that receives data on the amount of fuel gas used, the amount of tap water used, and the amount of power used transmitted from the home energy management device 10 installed in each home. The CPU 22 executes R
The communication control of the center communication device 21 and the control of the entire management center 20 are performed based on the program stored in the OM 23. The RAM 24 stores the received usage amounts, temporary calculation data, and the like. Note that the management center 20 may manage the data of the amount of fuel gas used, the amount of tap water used, and the amount of electric power used to collect a fee.

When a gas leak detector 31, a fire (smoke) detector 32, an intrusion detector 33 and the like are installed as devices related to safety in the home, information such as alarms detected by these detectors is managed. The information can be transmitted to the management center 20 through the communication device 12 of the device 10. Further, the operating state of each device in the management device 10, for example, the temperature, flow rate, voltage and current of each part of the fuel cell 11 and the hot water tank 13 are periodically transmitted to the management center 20 by the communication device 12, and are remotely managed. At the same time as monitoring the device 10, when an error occurs in each device in the management device 10, the content of the error and the status of the management device 10 are also transmitted to the management center 20 by the communication device 12. This enables quick response to abnormalities in the home security and the fuel cell 11 and the like. It is also possible to predict the maintenance time of the fuel cell 11 from data such as the amount of fuel gas used, the amount of tap water used, and the operation time of the fuel cell 11,
Operation efficiency can be improved.

FIG. 6 is a flowchart showing an energy management process of the home energy management device 10 of the present invention.
The energy management process is performed in the entire home and in the fuel cell, respectively. As for the whole house, each usage amount is measured by the hot water supply energy meter 14, the gas meter 16, the water meter 17 and the power meter 18 in step a1, and integrated in step a2. In step a3, the maximum value is extracted by comparing the measured values for each time zone. In step a4, metered fee information is acquired, and in step a5, a fee is calculated from the metered fee information and the integrated value. In step a6, a maximum fee is calculated from the usage fee information and the maximum usage amount. At step a7, the integrated usage amount and the calculated fee are displayed on the display device 19. In step a8, the maximum usage amount, the calculated fee, and the time zone in which the maximum usage amount is recorded are displayed on the display device 19.

As for the fuel cell, the amount of use and the amount of generation are measured by the hot water supply energy meter 14, the power generation amount meter 15, the gas meter 16, the water meter 17 and the power meter 18 in step b1, and integrated in step b2. In step b3, the maximum value is extracted by comparing the measured values for each time zone. In step b4, metered fee information is acquired, and in step b5, a fee is calculated from the metered fee information and the integrated value. In step b6, the maximum fee is calculated from the usage fee information, the maximum usage amount and the maximum generation amount.
In step b7, the integrated usage amount and the calculated fee are displayed on the display device 19. In step b8, the maximum usage amount and the maximum generation amount, the calculated fee, and the time zone in which the maximum value is recorded are displayed on the display device 19.

When these data are displayed, step s
In step 1, the user compares the data to determine the energy efficiency and cost effectiveness in the home, and can optimize the conditions such as the lowest cost and the lowest energy consumption. Step b2
Using the data obtained in b3 and b3, the fuel gas usage, tap water usage, and the cumulative operation time are calculated in step s2, and in step s3, each of the usage and the cumulative operation time are compared with a predetermined value. Then, it is determined whether it is time to maintain the fuel cell. If the value is equal to or larger than the specified value, the communication device 12 issues a maintenance request to the management center 20 in step s4.

Calculations such as the charge corresponding to each usage amount, the totalization of each usage amount and the generation amount are performed by the arithmetic unit 2 of the management device 10.
9 may be performed, or may be performed by the CPU 22 of the management center 20 and provided to the management device 10. Each data may be stored in both the management device 10 and the management center 20, or one of them may be stored. Optimization such as the condition of the lowest charge and the condition of the lowest energy consumption is determined by the user and determined by the fuel cell 11.
May be changed, or the arithmetic unit 29 of the management device 10 may judge and change the condition.

Further, it is also possible to transmit a part of the electric power generated by the fuel cell 11 as surplus electric power to an electric power supplier and sell it. In this case, what the power meter 18 measures is the amount of power obtained by subtracting the amount of power used in the home from the amount of power generated by the fuel cell 11, and the surplus power flows backward to the power supplier.

FIG. 7 is a block diagram showing a configuration of a home energy management apparatus 10a according to another embodiment of the present invention. The embodiment of FIG. 7 is similar to the embodiment of FIGS. 1 to 6 described above, and corresponding parts are denoted by the same reference numerals. In particular, in the embodiment of FIG. 7, a water heater 46 is provided in place of the hot water storage tank 13 in the above-described embodiments of FIGS. Fuel gas supplied to the gas burner 47 via the gas meter 16 is supplied to the water
Is supplied to a fan 48 that supplies combustion air to a gas burner 47. The tap water through the water meter 17 is supplied to a heat exchanger 49 that heats the tap water by burning the fuel gas in the gas burner 47. The hot water from the heat exchanger 49 is supplied via a pipe 36 for hot water supply to a bath, kitchen, washroom, or the like. Meter 16-18
Measures the value including the amount of water used by the water heater 46.

In another embodiment of the present invention, a water heater 46
Alternatively, a hot water supply / room heater that can supply hot water for hot water heating may be used. Other configurations and operations of the embodiment shown in FIG. 7 are the same as those of the above-described embodiments of FIGS.

FIG. 8 is a block diagram showing an electrical configuration of a home energy management apparatus 10b according to still another embodiment of the present invention. The configuration of the home energy management device 10b is similar to the embodiment shown in FIG. 7 described above, and corresponding portions are denoted by the same reference numerals. In particular, in the embodiment of FIG. 8, a panel-shaped solar cell 52 as a power source is provided. The DC power generated by the solar cell 52 is
The power is converted into AC power by the DC / AC converter 53, the generated power is measured by the generated power meter 15 b, and is supplied to the distribution board 43 from the line 54. The electric power thus generated in the solar cell 52 is also used together with the commercial AC power of the system at home, and the electric power of the solar cell 52 can be supplied to the system. The solar water heater is configured in combination, and the hot water obtained by the solar water heater can be used at home together with the hot water from the water heater 46. The solar water heater has a configuration in which tap water is heated via the water meter 17 by solar heat, and hot water supplied from the solar water heater can be measured by a meter having a configuration similar to the water meter 17. it can. The outputs of the generated power meter 15b and the outputs of the meters for measuring the amount of hot water supplied from the solar water heater are supplied to the processing circuit 27 of the display device 19 in the same manner as in the above-described embodiment. And transmitted to the management center 20 by the communication device 12.

FIG. 9 is a front view showing a water heater control mode of the processing circuit 27 in the home energy management system of the embodiment of FIG. Housing 56 of display device 19
On the front side of the device, a display push button 57 for switching the display by the display body 28 is provided, and operation push buttons 58 to 60 for controlling the operation of each device of the home energy management device 10b are provided. The push button 58 is a push button for turning on / off the operation of the home energy management device 10b. The push button 59 is a push button for automatically supplying hot water from the bath. Further, the push button 60 is a push button that is operated to control the temperature of hot water for a bath and hot water for a shower. The display 28 displays the current time in the time area 61, displays the temperature of the hot water in the bath in the hot water area 62, and displays the temperature of hot water such as a shower or a kitchen hot water in the area 63.

FIG. 10 is a front view showing a state in which the display 28 of the display device 19 is performing the monthly gas area display mode. The display 28 indicates the value of the fuel gas 1 measured by the gas meter 16 for the date indicated in the area 64.
A fee corresponding to the usage amount for a month is displayed in an area 65, and a target value set in advance by a user is displayed in an area 66 below the area 65. The user can easily grasp the usage amount of the fuel gas used in the past in the area 64, that is, the level of the usage fee, by viewing and comparing the fees displayed in these areas 65 and 66. .

FIG. 11 is a front view of the display means 19 in the monthly power rate display mode. This display state is similar to the display state of FIG. 10 described above, and the same reference numerals are used for the corresponding parts, and the subscripts a and b are used. By the power meters 18 and 15b, the amount of power for one month of the year and month displayed in the area 64 is shown in the area 65a,
The target value is displayed in the area 66a. This gives 1
The comparison with the target value of the electric energy for a month can be easily performed. The power purchased from the power supplier measured by the power meter 18 and the generated power measured by the power meter 15b may be displayed separately.

FIG. 12 is a front view showing the state of the display device 19 in the monthly water charge display mode. The fee corresponding to the amount of tap water used for one month of the year and month displayed by the water meter 17 in the area 64 is displayed in the area 65b, and the target value is displayed in the area 66b. This allows the user to easily compare the amount of tap water used for one month with the target value.

FIG. 13 is a front view of the display device 19 in the monthly total charge display mode. The fee corresponding to the amount of fuel gas, tap water, and electric power used over the one month shown in the area 64 is displayed in an area 65c, and the target value is displayed in an area 66c below the area 65c.

FIG. 14 is a front view of the display device 19 in the annual total charge display mode. The sum total of the charges corresponding to the amount of fuel gas, tap water, and electric power used for one year in the year shown in the area 64 is displayed in an area 65d, and the target value is displayed in an area 66d. Thus, the user can easily compare the total fee displayed in the area 65d for one year displayed in the area 64 with the target value displayed in the area 66d.

FIG. 15 is a front view showing the monthly total charge history mode of the display device 19. In the area 68, “Past 1
In the area 69, the usage fee for each month of the past 12 months, for example, in this embodiment, from May to April of the following year, is displayed in a bar graph. You. The horizontal axis of this bar graph represents each month, and the vertical axis is a value representing the sum of charges corresponding to the usage amounts of fuel gas, tap water and electric power, respectively.

FIG. 16 is a front view showing the target setting mode of the display device 19. The operator operates the display push button 57 and also operates the operation push button 60 to set “90% of the same month of the previous year” shown in the area 71 of the display 28,
Also, the numerical value of the ratio 90% can be changed. Further, regarding the fee corresponding to the ratio displayed in the area 71, the area 72 includes, for example, “about 1,200 yen per year”.
Is displayed, and therefore the fuel gas corresponding to said ratio,
The difference between the current year and the previous year for one year of tap water and electricity is displayed in monetary value. In this way, the user can
The usage amounts of tap water and electric power are set by ratio, setting of target values becomes easy, and the amount of money to be saved can be easily grasped.

In the display 28, in each of the operation modes shown in FIGS. 9 to 16, graphics for representing the operation mode are shown in the upper left corner areas 74 to 81, respectively. The contents displayed in these areas 74 to 81 and the area 82 in FIG. 9 are also displayed with characters in addition to the graphics, so that it is easy to understand the operation mode at a glance.

FIG. 17 is a front view showing the display device 19 in the usage-specific gas usage amount display mode. The display 28 displays the amount of use of the fuel gas for each application in a bar graph, for example. Uses include baths, showers, kitchens, lavatories, and heating, and the amount of hot water used for each use is measured with a meter.
It can be obtained by calculation. The usage amount of the fuel gas for each application may be measured by providing a measuring device for measuring the usage amount for each application.
An estimating method as described in Japanese Patent No. 1064 may be used.
Although FIG. 17 shows the usage of gas, the usage of electric power, water, kerosene and the like may also be displayed for each application.

In another embodiment of the present invention, the usage of each terminal device connected to the hot water supply / room heater is estimated and calculated from the fuel gas consumption of the hot water supply / room heater and the control information. Is also good. Furthermore, it is possible to calculate the difference between the total amount of household fuel gas used and the amount of hot water heater / heater used, and its usage pattern.Furthermore, based on information obtained from the terminal device of the hot water heater / heater, etc. Can be estimated and displayed on the display screen of the display 28.

FIG. 18 is a flowchart for explaining the operation of the processing circuit 27 provided in the display device 19. By the operation of the processing circuit 27, the aforementioned FIGS.
Is achieved by pressing the push buttons 57-60. When it is determined that the display push button 57 has been operated in Step c1 to Step c2 in FIG. 18, in Step c3, the display of FIGS. Is switched. FIG.
17 is sequentially changed and circulated every time the display push button 57 is operated.

When it is determined in step c5 that the operation push buttons 58 to 60 other than the display push button 57 have been operated, the operation corresponding to each of the operation push buttons 58 to 60 is performed in step c6.

In another embodiment of the present invention, FIG.
In each of the operation modes of FIG.
And values displayed in the areas 66 and 66a to 66d.
In order to further facilitate the comparison with the target value displayed in, the values of those differences may be displayed on the display. Further, the accumulated amount of the usage amount within one year from the reference date (for example, January 1) to the time when the display push button 57 is operated may be displayed on the display 28.

In still another embodiment of the present invention, not only the fuel gas, tap water and electric power but also the amount of kerosene used is measured by the measuring means, and an operation such as display similar to the above is performed. Good.

In still another embodiment of the present invention, the amount of fuel gas used, the amount of electric power used, and further the amount of kerosene used may be measured in units of calorie, such as J [Joule] or MJ [Mega Joule]. Can also be displayed by
This makes it possible to easily compare heat energy. The amount of usage expressed in such a common calorific value unit,
For each item such as fuel gas, electric power and even kerosene,
It can also be displayed on the display 28.

The configurations and operations shown in FIGS. 9 to 18 can be similarly realized in the embodiments shown in FIGS. 1 to 6 and FIG.

As described above, since not only energy used at home but also home security can be managed collectively, customer service at the management center can be further improved.

[0076]

As described above, according to the present invention, comprehensive management of fuel gas, electric power, various energies such as kerosene, and tap water, etc., used in each household can be easily and collectively performed by the central management device. Can be done.

Further, according to the present invention, since a system for linking with a commercial power supply is provided, it is possible to uniformly manage the amount of power consumed in a home. Further, since the fuel cell is an outdoor device that consumes fuel gas and water, it can easily function as a supply port for each energy infrastructure.

Further, according to the present invention, it is possible to judge energy saving and cost effectiveness at home.

Further, according to the present invention, it is possible to quickly respond to abnormalities in the home security and home energy management devices.

[Brief description of the drawings]

FIG. 1 is a diagram showing a configuration of a home energy management system 1 according to an embodiment of the present invention.

FIG. 2 is a diagram showing a screen display example of a display device 19;

FIG. 3 is a diagram showing a screen display example of the display device 19;

FIG. 4 is a diagram showing a screen display example of the display device 19;

FIG. 5 is a diagram showing a screen display example of the display device 19;

FIG. 6 is a flowchart showing an energy management process of the home energy management device 10 of the present invention.

FIG. 7 is a block diagram showing a configuration of a home energy management device 10a according to another embodiment of the present invention.

FIG. 8 is a block diagram showing an electrical configuration of a home energy management device 10b according to still another embodiment of the present invention.

9 is a front view illustrating a water heater control mode of a processing circuit 27 in the home energy management system according to the embodiment of FIG. 8;

FIG. 10 is a front view showing a state in which a monthly gas region display mode is being performed by a display body 28 of the display device 19.

FIG. 11 is a front view of the display unit 19 in a monthly power rate display mode.

FIG. 12 is a front view showing the state of the display device 19 in a monthly water charge display mode.

FIG. 13 is a front view of the display device 19 in a monthly total charge display mode.

FIG. 14 is a front view of the display device 19 in an annual total charge display mode.

FIG. 15 is a front view showing the monthly total charge history mode of the display device 19;

FIG. 16 is a front view showing a target setting mode of the display device 19;

FIG. 17 is a front view showing a state of the display unit 19 in a usage-specific gas usage amount display mode.

FIG. 18 is a flowchart illustrating an operation of a processing circuit 27 provided in the display device 19.

[Explanation of symbols]

 Reference Signs List 1 home energy management system 10 home energy management device 11 fuel cell 12 communication device 13 hot water tank 14 hot water supply energy meter 15 power generation meter 16 gas meter 17 water meter 18 power meter 19 display device 20 management center 21 center communication device 22 CPU ( Central processing unit) 23 ROM (read only memory) 24 RAM (random access memory) 27 processing circuit 28 display 31 gas leak detector 32 fire (smoke) detector 33 intrusion detector 46 water heater

 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Yasuhiro Ide 4-1-2, Hirano-cho, Chuo-ku, Osaka-shi, Osaka Inside Osaka Gas Co., Ltd. (72) Hideki Okamoto 4-chome, Hirano-cho, Chuo-ku, Osaka-shi, Osaka No. 1-2 F-term in Osaka Gas Co., Ltd. (reference) 2F073 AA07 AA08 AA09 AA21 AA40 AB02 AB12 BB01 BB09 BB20 BC01 BC02 CC01 CC08 DD02 GG01 GG09 GG10

Claims (18)

[Claims] (A) measuring means for measuring at least one usage amount of fuel gas, tap water, electric power and kerosene supplied to a household, and at least one of fuel gas, electric power and kerosene as a heat source (B) household energy management device comprising: a hot water supply device for heating tap water to obtain hot water; and a hot water supply device for supplying the hot water; and a transmission device for transmitting data of the amount of use obtained by the measurement device. A home energy management system comprising: a central management device including a receiving unit that receives usage data transmitted from the energy management device. 2. The home energy management device includes an energy generating means for generating electric power and heat at home using fuel gas, and the hot water supply means converts the electric power or heat generated by the energy generating means into tap water. The home energy management system according to claim 1, wherein the home energy management system is used as a heating heat source. And (a) energy generating means for generating electric power and heat at home using fuel gas, hot water supply means for supplying hot water obtained by heating tap water with heat generated by the energy generating means, and Fuel gas usage measuring means for measuring fuel gas usage in the city, tap water usage measuring means for measuring tap water usage in the home, and transmitting the fuel gas usage and tap water usage data. And (b) a central management device including a receiving unit that receives data of the amount of fuel gas consumption and the amount of tap water transmitted from the household energy management device. A home energy management system characterized by the following. 4. The home energy management system according to claim 2, wherein said energy generating means is a fuel cell. 5. The home energy management system according to claim 2, wherein the energy generating means includes a solar cell as a power source. 6. The home energy management system according to claim 2, wherein the energy generating means includes a solar water heater and a solar cell. 7. The home energy management device includes a power consumption measurement unit that measures power consumption at home, and the transmission unit transmits power consumption data to a central management device. The home energy management system according to claim 1 or 2, wherein 8. The home energy management device includes a display unit, and a generation amount measurement unit that measures generated electric energy and heat amount, wherein the display unit includes the fuel gas usage amount,
The home energy management system according to claim 3, wherein each of the amount of tap water and the amount of electric power used, the amount of generated electric power and heat, and a charge corresponding to the amount of use are displayed. . 9. The home energy management device includes a display unit, and the display unit displays a usage amount measured by the measurement unit or a fee corresponding to the usage amount. Home energy management system according to one of the preceding claims. 10. The home energy management system according to claim 9, wherein the display unit further displays the amount of generated power and the amount of heat generated by the energy generation unit. 11. The display device according to claim 11, wherein the display unit displays at least one of the past usage amounts, the past charges, the past power generation amount, and the past heat generation amount. Item 11. A home energy management system according to item 9 or 10. 12. The display means displays at least one of the usage amount for a plurality of periods among the respective charges for a plurality of periods, the generated power amount for a plurality of periods, and the heat generation amount for a plurality of periods. The home energy management system according to any one of claims 9 to 11, further comprising: 13. The display device according to claim 9, wherein the display unit displays the respective usage amounts and a preset target usage amount for each of the usage amounts so as to be comparable.
A home energy management system according to any one of the preceding claims. 14. The display means displays the fuel gas usage amount, the power usage amount, and the kerosene usage amount in a calorie unit J [Joul
The energy management system for home use according to any one of claims 9 to 13, characterized in that the system is displayed as [e]. 15. The transmission unit transmits information detected by a device related to safety installed in a home or information related to an operation state of a home energy management device to a central management device to be notified. The home energy management system according to any one of claims 1 to 14. 16. An energy generating means for generating and generating heat at home using fuel gas, a hot water supply means for supplying hot water obtained by heating tap water with heat generated by the energy generating means, A household energy management device comprising: a fuel gas usage measuring unit for measuring usage; and a tap water usage measuring unit for measuring tap water usage at home. 17. Fuel gas, tap water supplied to a household,
Measuring means for measuring at least one of electric power and kerosene; hot water obtained by heating tap water using at least one of fuel gas, electric power and kerosene as a heat source, and hot water supply means for supplying the hot water; A home energy management device comprising: 18. A transmission means for transmitting, to the central management unit, data on fuel gas usage, tap water usage, power usage, kerosene usage, or information on the operating state of the home energy management system. 18. The method of claim 17, wherein
A home energy management device as described.