JP3186743U - Home energy management system - Google Patents

Abstract

The present invention provides a home energy management system that can be used in both a detached house and a condominium, and can be retrofitted to an existing building as well as a new building. A management server 3 connected to each router 2 via a public communication line, a builder server 5 connected to the management server 3 to transmit useful information, and a power sensor 7 connected to a distribution board 6 at home. And a device unit 8 connected via the. The device unit 8 includes a CPU, a memory, a bus type LAN chip, and an input / output port.
[Selection] Figure 1

Description

  The present invention relates to a home energy management system that can be used in both detached houses and condominiums, and can be retrofitted to existing buildings as well as new buildings.

  In recent years, problems related to nature conservation and environmental pollution have increased in interest at the individual level, and in order to suppress wasteful consumption of electricity and gas at home, monitoring the use of energy such as electricity or controlling supply and demand, Various technologies leading to energy saving have been proposed. The government's promotion of HEMS (Home Energy Management System) is expected to help accelerate this situation.

  With the promotion of this HEMS, for example, in Japanese Patent Application Laid-Open No. 2010-2111780, the target value of the daily or monthly power energy usage is obtained from the actual value that is the past power energy usage stored in the database. Estimate the daily or monthly power energy usage from the current value and past actual power consumption, and then predict the power energy usage over a long period of time, such as daily or monthly. The power energy is appropriately monitored by obtaining the value and the target value with high accuracy.

  On the other hand, Japanese Patent Application Laid-Open No. 2013-20488 has been proposed as another energy management system. In JP2013-20488A, an image obtained by imaging a display unit of a gas meter that displays an accumulated usage amount is transmitted to a terminal-side processing device, and the transmitted image is image-recognized by an image recognition unit. The image data recognized by the image recognition means is converted into numerical data by the data conversion means. The numerical data is stored in the storage means and is output to the data analysis means via the output means. Further, the output numerical data is transmitted to the host computer via the public communication line, analyzed by the host computer, and then fed back to the terminal side processing device.

JP 2010-2111780 A JP 2013-20488 A

  Reading of data in Japanese Patent Application Laid-Open No. 2010-2111780 continuously stores an image that has been captured and transmitted, compares the stored first image with a second image that has been transmitted after a predetermined time, and The difference is detected by comparison, and if it is determined that the difference is greater than or equal to a predetermined value, the second image is output. In this case, since the data to be transmitted / received is image data, there is a problem that the amount of data required for communication becomes large and the communication speed becomes slow on a line such as the Internet.

  On the other hand, Japanese Patent Application Laid-Open No. 2013-20488 connects a charging stand for charging a storage battery for a vehicle mounted on a hybrid vehicle or an electric vehicle to a distribution board, and further wind power other than solar power generation or green for geothermal power generation. Electric power is also connected to the distribution board. The energy management system disclosed in JP2013-20488A is a detached house system that is extremely large in scale, and is difficult to be retrofitted to an existing building.

  Major home appliance manufacturers and house manufacturers are developing HEMS “visualization” and “control”, but as for “control”, devices that can be controlled wirelessly from the outside for the important home appliances are currently sold. The fact is not. These control devices are expected to be sequentially commercialized from 2013 to 2014, and until that point, it is necessary to propose an energy management system that does not use devices that can be controlled wirelessly from outside.

  The present invention has been proposed in order to improve the above-mentioned problems associated with conventional home energy management systems, requires a relatively small number of devices and is inexpensive, and can be retrofitted to existing buildings. It aims to provide a home energy management system. Another object of the present invention is to provide a home energy management system that can be applied to both a detached house and a condominium, and can display notifications and advertisements from builders on a monitor.

  The home energy management system according to the present invention collects and accumulates energy consumption such as electricity and gas used at home and transmits processing information. The home energy management system of the present invention includes a management server connected to individual routers via a public communication line, a builder server connected to the management server and transmitting useful information, and a power sensor on the distribution board at home. The device unit includes a CPU, a memory, a bus type LAN (registered trademark: Ethernet) chip, and an input / output port, and is always connected to a public communication line via a router.

  In the home energy management system of the present invention, the past, present and future predicted electricity charges and power consumption at home can be obtained by wirelessly or wiredly connecting the monitor device to the router or wirelessly connecting the outdoor mobile communication device to the public communication line. You can check the amount in real time. Further, by incorporating a flow sensor or pulse sensor in the water pipe and / or gas pipe, the energy consumption of tap water or city gas can be transmitted to the device unit. When retrofitting to an existing building, it is preferable that an infrared camera is attached in the vicinity of the integrated display gas meter, the camera always shoots the display window of the gas meter, and the camera is connected to the device unit by cord connection. The device unit preferably incorporates RTOS, TCP / IP protocol, WEB server program, SNMP, and OCR as software.

  The home energy management system according to the present invention can be configured entirely with existing devices, and the required number of devices is relatively small, making the entire system relatively inexpensive and easy to install. is there. In addition, the home energy management system according to the present invention can be used in either a detached house or a condominium, and can be retrofitted to an existing building. Therefore, the applicable range of the system is very wide.

  The home energy management system according to the present invention can display notifications and advertisements from the builder on the monitor via the management server, and such information includes electronic advertisements, mail order, periodic maintenance notifications, and the like. As a builder, various types of information can be freely transmitted to customers, and customers can display the information on their monitor devices and outdoor mobile communication devices such as smartphones. Differentiation can be achieved.

It is a schematic explanatory drawing which shows the home energy management system which concerns on this invention. It is a block diagram which shows schematic structure of the device unit which constructs the home energy management system of this invention. FIG. 3 is a main part circuit diagram showing a specific example of the device unit of FIG. 2. It is a graph which shows an example of the monthly electricity usage displayed on the monitor used by this invention. It is a graph which shows an example of the monthly gas usage displayed on the monitor used by this invention. It is explanatory drawing which shows the infrared camera used when retrofitting to an existing building.

  Next, the present invention will be described with reference to the drawings. A home energy management system 1 according to the present invention comprises system connections as shown in FIG. The home energy management system 1 includes a management server 3 connected to the router 2 via a public communication line, a builder server 5 connected to the management server and transmitting useful information, and a power sensor 7 connected to the distribution board 6 at home. And a device unit 8 connected via the. If the public communication line is the Internet line 10, the device unit 8 is connected to the management server 3 via the router 2 and the optical line terminator 11. The device unit 8 is connected to the router 2 by either wireless or wired communication.

  If installed, the solar power generation device 12 is connected to the device unit 8 via the power conditioner 14. Although not shown, the solar power generation device 12 is electrically connected to the distribution board 6 via the power conditioner 14. The DC power generated by the solar power generator 12 is converted into AC power by the power conditioner 14 and supplied to the distribution board 6 so that the generated power can be supplied to the house. Further, other home appliances such as an air conditioner 16 and a refrigerator 18 are also electrically connected to the distribution board 6. The distribution board 6 may be connected to a power generation device using natural energy such as wind power or geothermal heat other than sunlight, a storage battery for storing generated power including solar power generation, and the like to supply these power to a house. It is also possible.

  FIG. 2 illustrates a schematic configuration of the device unit 8 included in the home energy management system 1. The device unit 8 usually includes a computer and includes a CPU 20, a ROM 22, a RAM 24, and an input / output port 26 as shown in FIG. 2, which are connected to each other via a bus 28 such as an address bus, a data bus, and a control bus. Connected. Further, the device unit 8 usually includes a bus type LAN chip 30 to which the management server 3 and the builder server 5 are connected via the router 2 and the network line 10 to exchange information with the management server. it can.

  In the device unit 8, the ROM 22 stores a program for controlling power supply to the home, various information for executing the program, and the like. The program stored in the ROM 22 is expanded in the RAM 24 and the like and executed by the CPU 20 to perform supply control of power supplied to the house and other various controls. Further, the power sensor 7 for the distribution board 6, the pulse sensor 32 for water supply, the flow sensor 34 for gas, and the like can be connected to the input / output port 26.

  FIG. 3 shows a specific example of the device unit 8, and the device unit is composed of a device server 36 (not shown for violation of public order and morals). The device server 36 has a small square size, in which hardware such as a CPU, a memory, and a bus type LAN chip, and software such as RTOS, TCP / IP protocol, security-compatible WEB server, and SNMPv2c are incorporated.

  Since the device server 36 has a 32-bit CPU inside, it can be connected to the device main body and the network with little use of host CPU resources of other devices, implement TCP / IP, There is no need to review the basic design such as switching to a higher CPU. The device server 36 is a network module equipped with almost all network applications, is equipped with SSL / SSH, enhances security, is compatible with CGI and AJAX built in the Web server, is compatible with 802b / g wireless LAN, It is possible to expand to a general wireless LAN. In addition, it is possible only by adding MAC / PHY Ethernet (registered trademark), RJ45 jack and magnetics to the PCB of the device, SNMPv2c is Ready, MIBII is supported, and the CLI of public order and moral violation is not shown. XML conforming to the above, and a break signal transmission function.

  In the device unit 8, the device (not shown for public order and moral violation) 38 is a programmable RS-232 / RS-485 / RS-422 multi-protocol transceiver, which is a 2Tx / 2Rx RS-232 interface or a single RS-485 / RS. It is pin programmable as a -422 transceiver. Device 38 has enhanced ESD (electrostatic discharge) protection, all transmitter outputs and receiver inputs are protected to ± 15kV using the human body model, with its own low dropout transmitter output stage, and dual charge pump Built-in, RS-232 and RS-485 / RS-422 compliant performance can be obtained from a + 3V to + 5.5V power supply.

  In the device unit 8, the device (not shown for public order and moral violation) 40 is a + 3.3V + 3.3V low power transceiver for RS-485 and RS-422 communication with ± 15kV. Device 40 includes a slew rate limiting driver that minimizes EMI and reduces reflections caused by improperly terminated cables, allowing error-free data transmission at data rates up to 250 kbps. Electrostatic discharge (ESD) protection is enhanced.

  The router 2 shown in FIG. 1 can be connected to a monitor device 42 including a screen display unit and an operation unit as input / output devices wirelessly or by wire, and can be arbitrarily connected to personal computers 44 and 46 and a TV device. As the monitor device 42, a commercially available tablet, a touch panel, a smartphone, or the like as illustrated can be applied.

  The distribution board 6 is connected to the device unit 8 via a power sensor 7, which is also referred to as a power monitor or a power meter. The power sensor 7 can easily perform basic “visualization” of the energy used from introduction to measurement / data management, and can store the measurement data in the management server 3 via the device unit 8, so it can be easily performed by the monitor device 42. Graph display is possible.

  The power sensor 7 can be used by simply connecting a current sensor (CT) to the electric wires of the distribution board 6 by using the simple measurement mode, and power can be measured without turning off the power of existing facilities. Two current sensors (CT) are required when measuring a single-phase three-wire system or a three-phase three-wire system such as the distribution board 6. Two current sensors (CT) having the same rated capacity are used, and when connecting, the secondary side of the current sensor (CT) is first connected to the main body of the power sensor 7, and then the primary of the current sensor (CT) is connected. The side is wired to the electric wire of the distribution board 6.

  In order to connect the solar power generation device 12 to the device unit 8, all of the power conditioner 14, the electricity sales meter 48, and the electricity purchase meter 50 are passed through the power centers 52, 54, and 56. The power sensors 52, 54, and 56 can be used simply by connecting a current sensor (CT) to the electric wire of each device. One current sensor (CT) may be used when measuring a single-phase two-wire system.

  In order to connect the water supply 58 or the gas 60 to the device unit 8, the pulse sensor 32 attached to the water pipe or the flow rate sensor 34 incorporated in the gas pipe is used. For this reason, it is preferable to install the pulse sensor 32 and the flow sensor 34 when a building is newly constructed. In addition, home appliances such as the air conditioner 16 and the refrigerator 18 can be connected to the device unit 8 via the power center when a current sensor (CT) is connected to the electric wire, so that the amount of electricity used and the amount of money used for each home appliance. Can be displayed.

The management server 3 connected to the Internet line 10 collects and accumulates various information transmitted from the device unit 8 and performs data processing and transition check for optimal “visualization”. In addition, we will propose a more appropriate energy reduction method while checking the energy used by each person. This “visualization” includes not only electricity, gas, and water usage and usage as shown in FIGS. 3 and 4, but also year-on-year comparison, setting of target values, evaluation of reduction results, hourly / day. Daily / monthly, monthly / yearly, etc. can be displayed, and the amount of CO ₂ reduction can also be displayed.

  On the other hand, the builder server 5 can transmit various types of information to each person via the management server 3, and can display the information on an outdoor portable communication device such as the monitor device 42 and the smartphone 62. This information includes electronic advertisements, mail orders, periodic maintenance notices, etc., and corresponds to useful information for each person, so as to differentiate from other companies and enhance the advertising effect as “visualization”.

  FIG. 6 shows an infrared camera 64 used when retrofitting an existing building, and the number of instructions of the gas meter 66 installed at home is accurately read by the camera. An infrared camera 64 such as a CCD camera is arranged in correspondence with a display window of an integrated display type gas meter 66 installed in a gas supply path in the home, and the camera displays a numerical value displayed on the display window of the gas meter 66. Then, the video captured by the camera is transmitted to the device unit 8.

  The device unit 8 captures the image transmitted from the infrared camera 64, recognizes the captured image in accordance with the OCR program stored in the ROM 22, and converts the image data recognized by the image into numerical data. The converted numeric data is stored in the RAM 24 and transmitted to the management server 3 via the input / output port 26.

  Next, the data processing procedure in the device unit 8 will be described. The power sensors 7, 52, 54, 56, the pulse sensor 32, and the flow rate sensor 34 for a predetermined device always output individual numerical data to the device unit 8. . Each numerical data is transmitted to the management server 3 that performs data management and web browsing service via the Internet line 10 as shown in FIG. 1, and after the data analysis is performed by the management server, the analysis result is managed. Store in the storage means of the server 3. The stored analysis data can be arbitrarily browsed via the Internet line 10 according to each output request.

  This output request can be made from the monitor device 42, the personal computers 44, 46 or the outdoor smart phone 62, and the extracted output data after analysis is the home monitor device 42, the personal computers 44, 46, the TV device, and the outdoor smart phone. It can be confirmed at 62. When the monitor device 42, the personal computer 44, 46 or the smartphone 62 is used, the distribution board 6 can be controlled via the device unit 8, thereby adjusting the amount of electricity used, increasing / decreasing the power failure time, and the home of the power of the solar power generation device 12. The amount of supply to can be adjusted.

  Further, since the device unit 8 can be transmitted to and received from the management server 3, various information such as weather information can be received from the management server 3 and displayed on the screen. For example, in order to predict the amount of power generated by the solar power generation device 12, the device unit 8 acquires weather information from the management server 3 and refers to the acquired weather information, thereby generating power by the solar power generation device 12. It is also possible to predict the amount of power.

  Next, when this invention is demonstrated based on an Example, this invention is not limited to an Example. As a home energy management system of the minimum unit, a monitor device 42, a device unit 8 which is a device server (product name: MatchPort AR) 36, a power sensor (product name: KW7M eco-power meter) 7, and two current sensors (CT) And composed of various wire rods. This system can be applied to both new and existing buildings, and is dedicated to monitoring electricity usage. It is assumed that the existing router 2 has a wireless transmission function and the management server 3 is constructed.

  The power sensor 7 is connected to the device unit 8, and the secondary side of the two current sensors (CT) is connected to the main body of the power sensor 7, and then the primary side of the two current sensors (CT) is separated. Wiring is performed on the electric wire of the electrical panel 6. After the device unit 8 is wirelessly connected to the router 2 and various program settings are made, the amount of electricity used, the amount of money used, etc. can be displayed on the monitor device 42.

  As another minimum unit home energy management system, a monitor device 42, a device unit 8 which is a device server (product name: MatchPort AR) 36, a power sensor (product name: KW7M eco-power meter), two current sensors (CT ), An infrared camera 64, an L-shaped camera stay (not shown), and various wire rods. This system can be applied to existing buildings and is used for monitoring electricity and gas usage. It is assumed that the existing router 2 has a wireless transmission function and the management server 3 is constructed.

  When retrofitting to an existing building, an infrared camera 64 is attached to the camera stay, and the camera is fixed in close proximity to the gas meter so that the camera can always shoot the display window of the integrated gas meter 66 and the camera is connected to the device. Connect the cord to the unit 8. Next, the power sensor 7 is connected to the device unit 8, and then the secondary side of the two current sensors (CT) is connected to the main body of the power sensor 7, and then the primary of the two current sensors (CT) is connected. The side is wired to the electric wire of the distribution board 6. After wirelessly connecting the device unit 8 to the router 2 and performing various program settings, the monitor device 42 can display the amount of electricity used and the amount of gas, the amount of electricity and gas used, and the like.

DESCRIPTION OF SYMBOLS 1 Home energy management system 2 Router 3 Management server 5 Builder server 6 Distribution board 8 Device unit 10 Internet line 12 Solar power generation device 36 Device server

Figure 3 shows an example of a device unit 8, the device unit is composed of a secure SSL / SSH mounted embedded device server 3 6 using 32-bit high-speed MPU. The device server 36 has a small square size, in which hardware such as a CPU, a memory, and a bus type LAN chip, and software such as RTOS, TCP / IP protocol, security-compatible WEB server, and SNMPv2c are incorporated.

Since the device server 36 has a 32- bit CPU inside, the device server 36 can be connected to the device main body and the network with little use of host CPU resources of other devices, and can implement TCP / IP, There is no need to review the basic design such as switching to a higher CPU. The device server 36 is a network module equipped with almost all network applications, is equipped with SSL / SSH, enhances security, is compatible with CGI and AJAX built in the Web server, is compatible with 802b / g wireless LAN, It is possible to expand to a general wireless LAN. In addition, it is possible only by adding MAC / PHY Ethernet (registered trademark), RJ45 jack and magnetics to the device PCB, SNMPv2c is Ready, MIBII is supported , XML conforming to CLI is supported, Furthermore, a break signal transmission function is supported.

In the device unit 8, the device 3 8 is a programmable RS-232 / RS-485 / RS-422 multi-protocol transceiver, 2Tx / 2Rx RS-232 interface or pin programmable as a single RS-485 / RS-422 Transceiver It is. Device 38 has enhanced ESD (electrostatic discharge) protection, all transmitter outputs and receiver inputs are protected to ± 15kV using the human body model, with its own low dropout transmitter output stage, and dual charge pump Built-in, RS-232 and RS-485 / RS-422 compliant performance can be obtained from a + 3V to + 5.5V power supply.

In the device unit 8, device 4 0, RS-485 and RS-422 ± 15kV for communication, with ESD protection, low power transceiver + 3.3V. Device 40 includes a slew rate limiting driver that minimizes EMI and reduces reflections caused by improperly terminated cables, allowing error-free data transmission at data rates up to 250 kbps. Electrostatic discharge (ESD) protection is enhanced.

Claims (5)

  A home energy management system that collects and accumulates energy consumption such as electricity and gas used at home and transmits processing information, a management server connected to each router via a public communication line, and the management server A builder server that connects and transmits useful information and a device unit that is connected to a distribution board via a power sensor at home. The device unit includes a CPU, a memory, a bus LAN chip, and an input / output port. A home energy management system that is always connected to a public communication line via a router.   Claims that allow past, present, and future predictions of electricity charges, power consumption, etc. at home can be confirmed in real time by wirelessly or wiredly connecting a monitor device to a router or wirelessly connecting an outdoor mobile communication device to a public communication line. The management system according to 1.   The management system according to claim 1, wherein the energy consumption of tap water or city gas can be transmitted to the device unit by incorporating a flow sensor or a pulse sensor in the water pipe and / or the gas pipe.   2. The management according to claim 1, wherein when retrofitting to an existing building, an infrared camera is attached in close proximity to the integrated display gas meter, and the camera constantly shoots the display window of the gas meter, and the camera is connected to the device unit by a cord. system.   2. The management system according to claim 1, wherein the device unit incorporates RTOS, TCP / IP protocol, WEB server program, SNMP, and OCR as software.

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