Display device

Abstract

To provide a technique capable of appropriately operating a management system for managing energy.SOLUTION: An exemplary display device is a display device included in a management system that manages energy, and a plurality of pieces of information related to electric power and heat are displayed in separate regions on one screen. At least one of the plurality of areas displays information of today and information of the previous day. The information of the previous day includes a first integrated value that is an integrated value for one day of the previous day, and a second integrated value that is an integrated value from the start time of the previous day to the same time as the current time of the current day of the previous day.SELECTED DRAWING: Figure 4

Description

[Technical Field]

[0001] The present invention relates to a display device. [Background technology]

[0002] Conventionally, an electric / thermal energy network that exchanges electric energy and thermal energy has been known (see, for example, Patent Document 1). The electric / thermal energy network connects, for example, a cogeneration system, a renewable energy source, an electric storage unit, a thermal storage unit, a power supply network, a thermal energy supply system, an electric load, and a thermal load. Optimization of energy management of the electric / thermal energy network is performed by a control device (computer). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Patent No. 6423967 Summary of the Invention [Problem to be solved by the invention]

[0004] A control device that manages energy in an electric and thermal energy network is equipped with an input device and a display device as a man-machine interface. The display device displays various input screens, etc. There are many devices connected to the electric and thermal energy network, and the amount of information displayed on the display device tends to be large. For this reason, the display device of a management system that manages energy is required to organize information and display it in an easy-to-read manner.

[0005] The present invention aims to provide a technique that can improve user convenience in a display device included in a management system that manages energy. [Means for solving the problem]

[0006] An exemplary display device of the present invention is a display device included in a management system that manages energy, and displays multiple pieces of information related to power and heat in separate areas on a single screen. At least one of the multiple areas displays information for today and information for the previous day. The information for the previous day includes a first integrated value that is an integrated value for the previous day, and a second integrated value that is an integrated value from the start time of the previous day to a time on the previous day that is the same as the current time of today. [Effects of the Invention]

[0007] According to the exemplary embodiment of the present invention, it is possible to improve the convenience for users of a display device included in a management system that manages energy. [Brief explanation of the drawings]

[0008] [Figure 1] Management system image [Figure 2] Block diagram showing the system controller configuration [Figure 3] FIG. 10 is a schematic diagram showing a state in which a login screen is displayed on the screen of a display device; [Figure 4] FIG. 1 is a schematic diagram showing a state in which a home screen is displayed on a screen of a display device; [Figure 5] A diagram explaining the details of the graph information displayed in each display area [Figure 6] FIG. 10 is a diagram for explaining the operation of a display switching button displayed in the thermal output display area. [Figure 7] FIG. 10 is a schematic diagram illustrating a home screen according to a modified example. [Figure 8] FIG. 10 is a schematic diagram illustrating a home screen of another modified example. DETAILED DESCRIPTION OF THE INVENTION

[0009] Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the drawings.

[0010] <1. Management System> FIG. 1 is a conceptual diagram of a management system 100 according to an embodiment of the present invention. The management system 100 manages energy. That is, the management system 100 is an energy management system. In particular, the management system 100 manages electric energy and thermal energy. The management system 100 is applied to, for example, residential facilities, industrial facilities, or residential and industrial facilities.

[0011] As shown in Fig. 1, the management system 100 includes a system controller 1. The management system 100 manages electric energy and thermal energy with the system controller 1 at its core. The management system 100 is configured to include equipment (electrical equipment) that is capable of supplying electric power, and equipment (thermal equipment) that is capable of supplying at least one of hot and cold energy. These pieces of equipment are controlled by the system controller 1.

[0012] Note that hot heat is warm heat, and cold heat is cold heat. In other words, when heat is classified into warm heat and cold heat, warm heat is hot heat, and cold heat is cold heat. For example, hot heat is air that is at a higher temperature than the room temperature, and cold heat is air that is at a lower temperature than the room temperature. Furthermore, the equipment shown in FIG. 1 is merely an example, and the configuration may be changed to one in which any of the equipment shown in FIG. 1 is missing, or to one in which equipment not shown in FIG. 1 is added.

[0013] 1, the management system 100 includes, as the above-mentioned electrical equipment, a renewable energy power generation device 2 and a storage battery 3. The renewable energy power generation device 2 and the storage battery 3 operate under the control of a system controller 1.

[0014] The renewable energy power generation device 2 is a device that generates power using renewable energy such as solar, wind, hydroelectric, or geothermal energy. The renewable energy power generation device 2 may be, for example, a solar power generation device or a wind power generation device. The renewable energy power generation device 2 is capable of supplying the power obtained by power generation to a power supply line of the management system 100. The storage battery 3 stores power generated by a power generation facility such as the renewable energy power generation device 2, and discharges the stored power as needed. In other words, the storage battery 3 is capable of supplying power to the power supply line of the management system 100. The storage battery 3 may be, for example, a lithium-ion battery.

[0015] The management system 100 is connected to a power grid 10. The power grid 10 is a large-scale commercial power grid, and supplies power to power-receiving equipment owned by the management system 100. The management system 100 can purchase electricity from the power grid 10 and receive a supply of power. The system controller 1 is provided so as to be able to control whether or not to receive a supply of power from the power grid 10. The system controller 1 may also be provided so as to be able to control whether or not to supply power to the power grid 10.

[0016] 1, the management system 100 includes, as the heat-related facilities, a boiler 4, a heat pump 5, and a hot water tank 6. The boiler 4, the heat pump 5, and the hot water tank 6 operate under the control of a system controller 1.

[0017] The boiler 4 can supply the thermal energy of steam or hot water obtained by burning a fuel such as gas to the heat supply line of the management system 100. The heat pump 5 operates an engine fueled by gas or the like to drive a compressor that compresses a refrigerant, thereby controlling temperature using the condensation heat or evaporation heat of the refrigerant. Here, temperature control refers to, for example, adjusting the temperature of indoor air when the heat pump 5 is applied to an air conditioner, or adjusting the temperature of the circulating fluid for the chiller when the heat pump 5 is applied to a chiller. A representative example of the circulating fluid is water. The heat pump 5 can perform a cooling operation to cool a temperature-controlled object and a heating operation to heat the temperature-controlled object. In other words, the heat pump 5 can switch between hot and cold energy and supply it to the heat supply line of the management system 100. The hot water storage tank 6 is connected to the boiler 4 or the like and can store hot energy by heat exchange between the aqueous medium in the tank and high-temperature hot water. The heat stored in the hot water tank 6 can be supplied to a heat supply line that the management system 100 has.

[0018] In the example shown in FIG. 1 , the management system 100 includes a cogeneration system 7 as a facility used for both the electrical and thermal facilities. The cogeneration system 7 operates under the control of a system controller 1. The cogeneration system 7 drives an engine using a fuel such as gas fuel, and generates electricity using a generator that is driven by the engine. The electricity generated by the generator can be supplied to a power supply line of the management system 100. The cogeneration system 7 can also supply thermal energy of steam or hot water obtained in a heat recovery boiler that utilizes heat (waste heat) generated by the engine to a heat supply line of the management system 100.

[0019] Electric power is supplied to the power load included in the management system 100 from a renewable energy power generation device 2, a storage battery 3, a power grid 10, or a cogeneration system 7. Examples of the power load include electric lights and various electrical appliances. Furthermore, hot or cold heat is supplied to the thermal load included in the management system 100 from a boiler 4, a heat pump 5, a hot water tank 6, or a cogeneration system 7. Examples of the thermal load include an air conditioner, a heating device, a refrigerator, a freezer, a hot water tank, etc.

[0020] <2. System Controller> 2 is a block diagram showing the configuration of a system controller 1 according to an embodiment of the present invention. As shown in FIG. 2, the system controller 1 has a control device 11, an input device 12, and a display device 13. That is, the management system 100 has the display device 13. The management system 100 further has the control device 11 and the input device 12.

[0021] The control device 11 controls the entire management system 100. The control device 11 is configured to include an integrated circuit for calculations such as a CPU, a RAM (Random Access Memory), and a ROM (Read Only Memory), etc. The control device 11 performs various functions by the integrated circuit for calculations such as the CPU executing calculation processes in accordance with computer programs stored in memory such as the ROM.

[0022] The input device 12 is provided to enable input of commands to the control device 11. The input device 12 is configured to include at least one of, for example, a touch panel, a keyboard, a mouse, a touch pad, a button, a rotary knob, etc. For example, when the input device 12 is a touch panel, the input device 12 and the display device 13 may be an integrated device. Furthermore, the control device 11 may be included in this integrated device.

[0023] The display device 13, under the control of the control device 11, displays a screen that displays various information related to the management system 100, an input screen for issuing commands to the control device 11, etc. The display device 13 is configured using, for example, a liquid crystal panel or an organic EL panel. The display device 13 may be configured to include a touch panel, and in this case, the display device 13 also serves as the input device 12 as described above.

[0024] <3. Screen display of the display device> Next, the display on the screen of the display device 13 will be described in detail.

[0025] (3-1. Screen display overview) 3 is a schematic diagram showing a state in which a login screen 131 is displayed on a screen 130 of the display device 13. A person (user) who wishes to access the management system 100 is first required to input predetermined information on the login screen 131. In other words, the screens that display various information related to the management system 100 and the input screens for inputting commands to the control device 11 cannot be viewed unless the user inputs the necessary information on the login screen 131.

[0026] 3, the login screen 131 has a login information input area 1311. The login information input area 1311 has a username input area 1311a for inputting a username, a password input area 1311b for inputting a password previously associated with the username, and a login button 1311c. That is, the login screen 131 requests input of a username and a password.

[0027] The username and password are entered using, for example, a keyboard or a touch panel. In a configuration in which a touch panel or a mouse is used for input, the input may be performed using a soft keyboard (virtual keyboard) that appears on the login screen 131. The soft keyboard may appear on the login screen 131 when the user touches or clicks on the username input area 1311a or the password input area 1311b, for example. A similar soft keyboard may be used to enter letters and numbers on other types of screens other than the login screen 131.

[0028] In this embodiment, the login screen 131 has a header area 200 at the top that extends in the left-right direction of the screen 130. The login screen 131 also has a footer area 300 at the bottom that extends in the left-right direction of the screen 130. The header area 200 and footer area 300 are also displayed as appropriate on screens other than the login screen 131. For example, the header area 200 displays a company logo, a menu related to the screen display, etc. The footer area 300 displays, for example, the time, the name of a user who is permitted to log in, etc.

[0029] After the username and password are entered, when the login button 1311c is operated by touching or the like, the home screen 132 is displayed. If at least one of the username and password is incorrect, an error message is displayed on the login screen 131, and the home screen 132 is not displayed.

[0030] FIG. 4 is a schematic diagram showing a state in which a home screen 132 is displayed on the screen 130 of the display device 13. In this embodiment, the home screen 132 is a screen designed to allow the demand and supply of electric energy and thermal energy in the management system 100 to be grasped at a glance. In the example shown in FIG. 4, the home screen 132 has a header area 200. The header area 200 includes a menu area 400 that indicates the types of screen display that can be selected. In this embodiment, the menu area 400 includes a home button 401, a status monitoring button 402, a graph button 403, a device management button 404, and an operation settings button 405. Each of the buttons 401 to 405 may be operated using, for example, a touch panel, a mouse, or a keyboard.

[0031] 4, home screen 132 is in a selected state, and therefore a selection indication indicating this selected state is displayed. In detail, a frame surrounding home button 401 is displayed as the selection indication. However, the selection indication is not limited to a frame surrounding a button, and other configurations may be used, such as a configuration in which the button is a different color from other buttons or a configuration in which the button is hatched differently from other buttons.

[0032] When the status monitoring button 402 is selected, a status monitoring screen is displayed. The status monitoring screen displays details of the operating status of each device included in the management system 100. Each device includes thermal devices and electrical devices. Thermal devices include, for example, the above-mentioned thermal-related equipment (including equipment that also serves as electrical-related equipment) and thermal loads (air conditioning equipment, footbath equipment, etc.). Electrical devices include, for example, the above-mentioned electrical-related equipment (including equipment that also serves as thermal-related equipment) and power loads.

[0033] When the graph button 403 is selected, a graph screen is displayed. The graph screen displays, for example, a graph showing the transition of the magnitude of the heat load and power load for each hour of the day and a breakdown of the output of each device relative to the load.

[0034] When the device management button 404 is selected, a device management screen is displayed. The device management screen displays device management information including input / output information of each device.

[0035] When the operation setting button 405 is selected, an operation setting screen is displayed. The operation setting screen includes an input screen for inputting information related to the operation of the management system 100. The information related to the operation includes information related to the control method of the management system 100. In this embodiment, the operation setting screen is configured to allow selection of whether optimization control and demand control are enabled or disabled.

[0036] Optimization control is a control method that performs control according to an optimization target selected by a user (a typical example is a customer) who uses the management system 100. Examples of optimization targets include cost priority, which prioritizes reducing various fees borne by the user; carbon dioxide emission priority, which prioritizes reducing carbon dioxide emissions generated by equipment operation; and primary energy consumption priority, which prioritizes reducing the consumption of primary energy required for equipment operation. In this embodiment, the user can select one of these three optimization targets. If the user selects cost priority, operation control that prioritizes cost reduction is performed, assuming that optimization control is enabled. If the user selects carbon dioxide emission priority, operation control that prioritizes reducing carbon dioxide emissions is performed, assuming that optimization control is enabled. If the user selects primary energy consumption priority, operation control that prioritizes reducing primary energy consumption is performed, assuming that optimization control is enabled.

[0037] Demand control is a control method for controlling devices included in the management system 100 so that the power received from the power grid 10 does not exceed a target demand value. The target demand value is set to be equal to or less than the contracted power. When optimization control and demand control are enabled, the management system 100 generally operates using optimization control, and switches to demand control when the received power approaches the target demand value.

[0038] As can be seen from the above explanation, the display device 13 can switch between multiple types of screens to display information managed by the management system 100. In the example shown in Fig. 4, the display device 13 can switch between at least five types of screens: a home screen, a status monitoring screen, a graph screen, a device management screen, and an operation setting screen. However, these screen displays are merely examples, and the types of screens that can be displayed by the display device 13 may be changed as appropriate.

[0039] 4, menu area 400 includes a forward button 406. When forward button 406 is operated by touching or the like, the type of button for selecting the screen type displayed in menu area 400 is switched. That is, in the example shown in FIG. 4, it is possible to display screens other than the five types of screens, namely, the home screen, the status monitoring screen, the graph screen, the device management screen, and the operation setting screen. Examples of screens other than the above-mentioned five types include a user management screen for inputting user information and a screen setting screen for setting conditions related to the screen.

[0040] 4, the home screen 132 also has a footer area 300. The footer area 300 includes an icon area 301 that indicates the user name and a time information area 302 that includes the date and time. In this embodiment, when the icon area 301 is operated by touching or the like, logout can be performed. In a preferred configuration, when the icon area 301 is operated, a confirmation screen pops up on the screen to confirm whether or not to perform logout, and if logout is permitted on the confirmation screen, logout is performed.

[0041] (3-2. Home screen details) Next, the home screen 132 shown in FIG. 4 will be described in detail. The home screen 132 displays a plurality of pieces of information related to power and heat managed by the management system 100. In other words, the display device 13 displays a plurality of pieces of information related to power and heat in the management system 100 on a single screen. With this configuration, the user can grasp the information related to power and heat in the management system 100 by looking at the single screen. In other words, user convenience can be improved. It is preferable that the plurality of pieces of information related to power and heat be displayed in separate areas on a single screen. In detail, the home screen 132 displays a list of a plurality of pieces of energy information managed by the management system 100, including power load information, received power information, generated power information, thermal load information, and thermal output information, in separate areas. In other words, the display device 13 displays a plurality of pieces of energy information, including power load information, received power information, generated power information, thermal load information, and thermal output information in the management system 100, in separate areas on a single screen. With this configuration, the user can view and understand the electrical and thermal load information and output information on one screen in the management system 100. In other words, user convenience can be improved.

[0042] In this embodiment, the thermal load includes a hot heat load and a cold heat load, and the thermal output includes a hot heat output and a cold heat output. However, this is merely an example, and the thermal load may be either a hot heat load or a cold heat load, and correspondingly, the thermal output may be either a hot heat output or a cold heat output. The hot heat load on the home screen 132 is the amount of hot heat required by an appliance that uses hot heat (e.g., a heating device), and the cold heat load is the amount of cold heat required by an appliance that uses cold heat (e.g., an air conditioner). The hot heat output is the output of equipment that supplies hot heat (such as the boiler 4). There may be one or more pieces of equipment that supply hot heat. The cold heat output is the output of equipment that supplies cold heat (such as the heat pump 5). There may be one or more pieces of equipment that supply cold heat.

[0043] The received power is power purchased from the power grid 10. The generated power is power generated by power generation facilities, such as the renewable energy power generation device 2 and the cogeneration system 7, that the management system 100 has.

[0044] In detail, the home screen 132 includes a power load display area R1, a received power display area R2, a generated power display area R3, a heat load display area R4, a heat output display area R5, a cooling load display area R6, and a cooling output display area R7. In this embodiment, each of the display areas R1 to R7 is rectangular. However, the shape of each of the display areas R1 to R7 may be other shapes, such as an oval.

[0045] In this embodiment, the power load display area R1, the received power display area R2, and the generated power display area R3, which are display areas related to power, are aligned horizontally on the screen 130. The heat load display area R4, the heat output display area R5, the cooling load display area R6, and the cooling output display area R7, which are display areas related to heat, are aligned horizontally on the screen 130. The power display areas R1, R2, and R3 are positioned above the heat display areas R4, R5, R6, and R7. However, this is merely an example. For example, the power display areas R1, R2, and R3 may be positioned below the heat display areas R4, R5, R6, and R7. Furthermore, a configuration in which power and heat are not grouped together may also be employed. Furthermore, the power display areas R1, R2, and R3 and the heat display areas R4, R5, R6, and R7 may be aligned vertically. Furthermore, the display areas R1 to R7 may be configured so that they can be rearranged according to the user's preference.

[0046] At least one of the plurality of areas is preferably configured to display a plurality of types of information collected over different periods, and the plurality of types of information preferably includes information for the current day and information for the previous day.

[0047] In this embodiment, each of the display areas R1 to R7 displays multiple types of information collected over different periods. Specifically, the display modes of the multiple types of information collected over different periods are the same among the display areas R1 to R7. However, the display mode of the multiple types of information collected over different periods in at least one of the display areas R1 to R7 may be different from that in the other display areas.

[0048] In detail, each display area R1 to R7 displays the current value, the value from the previous day, the value for today, the value for this month, and the value for this year. The current value is the instantaneous value at the current time. The value from the previous day is the integrated value for the previous day. The value from today is the integrated value from the start of today to the current time. The value from this month is the integrated value from the start of this month to the current time. The value from this year is the integrated value from the start of this year to the current time.

[0049] In this embodiment, each of the display areas R1 to R7 is configured to display five types of information (current value, yesterday's value, today's value, this month's value, and this year's value) with different collection periods, but this is merely an example. The types and number of pieces of information may be changed as appropriate. For example, the type of information may be increased to include this week's value, or this year's value may be changed to this week's value.

[0050] It is preferable that at least one of the areas is configured to display both numerical information and graphical information, but it is sufficient that at least one of the areas is configured to display at least one of numerical information and graphical information.

[0051] In this embodiment, each of the display areas R1 to R7 displays both numerical information and graph information. However, it is also possible to configure each of the display areas R1 to R7 to display only a portion of the numerical information and graph information. In this embodiment, in detail, each of the display areas R1 to R7 displays five types of numerical information, as described above: current value, value from the previous day, value from today, value from this month, and value from this year. Each of the display areas R1 to R7 displays two types of graph information: value from the previous day and value from today. However, the types and number of graph information displayed may be changed as appropriate.

[0052] It is preferable that at least one of the areas is configured to display a bar graph including information for the current day and information for the previous day. Fig. 5 is a diagram for explaining the details of the graph information displayed in each of the display areas R1 to R7. Fig. 5 shows the thermal load display area R4 as a representative example. The configuration of the graph information in the other display areas R1 to R3 and R5 to R7 is similar to that of the thermal load display area R4. Note that the display content of the thermal load display area R4 shown in Fig. 5 is different from that of the thermal load display area R4 shown in Fig. 4. This is because the timing of the screen display is different between Figs. 4 and 5.

[0053] As shown in FIG. 5, the thermal load display area R4 displays a bar graph 500 including a bar portion 501 showing information for today and a bar portion 502 showing information for the previous day. The bar portion 501 showing information for today indicates an integrated value from the start time of today to the current time. The start time of today is midnight. The bar portion 502 showing information for the previous day includes a first bar portion 5021 and a second bar portion 5022. The first bar portion 5021 indicates an integrated value for the previous day. The second bar portion 5022 is displayed overlaid on the first bar portion 5021 so as to be distinguishable from the first bar portion 5021, and indicates an integrated value from the start time of the previous day to the current time of the previous day (the current time of today).

[0054] In this embodiment, the first rod-shaped portion 5021 is displayed in white, and the second rod-shaped portion 5022 is displayed with hatching, making it possible to distinguish between the first rod-shaped portion 5021 and the second rod-shaped portion 5022. However, other display methods may be used as long as they can be distinguished when overlapped.

[0055] In the present embodiment, as a preferred embodiment, the plurality of pieces of information relating to power and heat displayed on the home screen 132 (one screen) further includes fuel usage information indicating the amount of fuel used in the management system 100.

[0056] In detail, as shown in FIG. 4, the home screen 132 includes a fuel consumption display area R8. The fuel consumption display area R8 is rectangular like the other display areas R1 to R7, but this shape may be changed as appropriate. The fuel consumption display area R8 also displays multiple types of information collected over different periods, and the display format is the same as the other display areas R1 to R7. That is, the fuel consumption display area R8 displays the current value, the value from the previous day, the value from today, the value from this month, and the value from this year. The fuel consumption display area R8 also displays a bar graph 500. However, this display format may be changed as appropriate, as with the above-described display areas R1 to R7. In this embodiment, the fuel consumption display area R8 is positioned below the thermal load display area R4, but this position may also be changed as appropriate.

[0057] In addition, in the present embodiment, as a preferred embodiment, the area displaying the fuel usage information can be switched to display information for each type of fuel.

[0058] In detail, fuel type switching buttons 700 are displayed above the fuel usage amount display area R8. In this embodiment, four types of buttons are displayed: natural gas, propane gas, biogas, and liquid fuel. By performing an operation such as touching one of the four types of fuel type switching buttons 700, usage amount information for the corresponding fuel is displayed. Note that, although this embodiment is configured to display four types of fuel type switching buttons 700, the types and number of buttons may be changed as appropriate.

[0059] In addition, in this embodiment, as a preferred form, the multiple pieces of information related to electricity and heat displayed on the home screen 132 (one screen) further include at least one of energy consumption information indicating the amount of energy consumed in the management system 100 and carbon dioxide emission information indicating the amount of carbon dioxide emitted in the management system 100.

[0060] In detail, as shown in FIG. 4, the home screen 132 includes a primary energy consumption display area R9 and a carbon dioxide (CO2) emission display area R10. These display areas R9 and R10 are rectangular like the other display areas R1 to R8 described above, but the shape may be changed as appropriate. Furthermore, these display areas R9 and R10 also display multiple types of information collected over different periods, and the display format is generally similar to that of the other display areas R1 to R8 described above. However, current values ​​are not displayed. That is, the primary energy consumption display area R9 and the carbon dioxide emission display area R10 display values ​​for the previous day, today, this month, and this year. Furthermore, the primary energy consumption display area R9 and the carbon dioxide emission display area R10 display a bar graph 500. However, the display format may be changed as appropriate, like the display areas R1 to R8 described above. In addition, in this embodiment, the primary energy consumption display area R9 is positioned below the thermal output display area R5, and the carbon dioxide emission display area R10 is positioned below the cooling load display area R6, but these positions may also be changed as appropriate.

[0061] In addition, in this embodiment, as a preferred embodiment, the home screen 132 (one screen) further includes a control status display area 600 that indicates the control status of the management system 100.

[0062] As shown in FIG. 4, in this embodiment, the control status display area 600 is included in the header area 200. More specifically, it is disposed immediately to the right of the menu area 400. However, the control status display area 600 may be displayed in another location on the home screen 132 as long as it is an easily visible location. In the example shown in FIG. 4, the control status display area 600 displays "optimized." This indicates that the management system 100 is operating under the above-described optimization control. In addition to this, the control status display area 600 may also display, for example, "demand control," "stopped," etc.

[0063] Furthermore, in this embodiment, the multiple pieces of energy information displayed in separate areas on the home screen 132 (one screen) include power breakdown information that shows a breakdown of the sources of power supplied to the power loads. In detail, the home screen 132 includes a power breakdown display area R11. In this embodiment, the power breakdown display area R11 is displayed side by side in the left-right direction together with the power load display area R1, the received power display area R2, and the generated power display area R3. However, the position of the power breakdown display area R11 on the home screen 132 may be changed as appropriate.

[0064] In detail, as shown in FIG. 4, the power breakdown display area R11 uses a pie chart to display the breakdown of power supply sources. The breakdown displayed in the pie chart is the breakdown of the current power supply sources. However, the breakdown of the current power supply sources is not limited to a pie chart and may be displayed using other graphs such as a bar chart. The breakdown may also be displayed in a table format. The breakdown displayed in the pie chart is not limited to the current power breakdown but may also be, for example, a breakdown of the power (amount of power) up to the current time today. In the example shown in FIG. 4, since all of the power load is covered by received power, the power breakdown shown in the pie chart is only the power grid (denoted as Grid in the figure).

[0065] In this embodiment, at least one of the plurality of regions is provided so that a graph showing a breakdown of energy supply sources can be displayed in a switchable manner with other information.

[0066] Specifically, among the multiple display regions R1 to R11, the heat output display region R5 and the cold output display region R7 are provided so that a graph showing the breakdown of energy supply sources can be displayed in a switchable manner with other information. A display switching button 800 is displayed in the heat output display region R5 and the cold output display region R7. The display is switched by performing an operation such as touching the display switching button 800.

[0067] FIG. 6 is a diagram illustrating the function of the display switch button 800 displayed in the heat output display areas R5 and R7. Note that the function of the display switch button 800 is similar in the heat output display area R5 and the cold output display area R7, so FIG. 6 shows the case of the heat output display area R5 as a representative example. Also, the display content of the heat output display area R5 shown in FIG. 6 is different from the display content of the heat output display area R5 shown in FIG. 4. This is because the timing of screen display differs between FIG. 4 and FIG. 6. Also, the display mode and arrangement of the display switch button 800 shown in FIG. 6 are exemplary and may be changed as appropriate.

[0068] When the display switch button 800 is operated in a state where the heat output display area R5 displays numerical information about the current heat output (the display state shown on the left side of FIG. 6), a pie chart showing a breakdown of the sources of supply of the current heat output is displayed (the display state shown on the right side of FIG. 6). Also, when the display switch button 800 is operated in a state where the heat output display area R5 displays a pie chart showing a breakdown of the sources of supply of the current heat output (the display state shown on the right side of FIG. 6), the display returns to a state where numerical information about the current heat output is displayed (the display state shown on the left side of FIG. 6).

[0069] In the example shown in Figure 6, the breakdown of the current heat output supply sources includes a boiler (denoted as Boiler in the figure), a first cogeneration system (denoted as EP in the figure), and a second cogeneration system (denoted as CP in the figure). In this example, the breakdown is shown using a pie chart, but this is not limiting and the breakdown may also be shown using a bar chart or the like.

[0070] In this embodiment, the display is switched between the display areas R5 and R7, but this is merely an example. As shown in Fig. 7, when a request is made to display a graph showing the breakdown of energy suppliers, a part of the display area may be erased, and the space vacated by the erasure may be filled with a display area for displaying the graph showing the breakdown of energy suppliers.

[0071] FIG. 7 is a schematic diagram for explaining a modified home screen 132A. In the example shown in FIG. 7, when the display switch button 800A of the heat output display area R5 is operated, the display areas R8, R9, and R10 (see FIG. 4) at the bottom of the home screen 132A are erased. Then, in the space vacated by the erasure, a breakdown display area R12 is displayed, which displays a pie chart showing the breakdown of the heat output supply sources. The breakdown display area R12 is erased by performing an operation such as touching the erase button 801 displayed in the display area R12. When the breakdown display area R12 is erased, the display areas R8 to R10 that were displayed before the breakdown display area R12 was displayed are displayed. Note that a similar effect is obtained when the display switch button 800A of the cold output display area R7 is operated.

[0072] 7, all three display areas R8 to R10 displayed in the lower row are erased by operating the display switching button 800. However, as long as space is secured to display the breakdown display area R12, only some of the display areas in the lower row may be erased. For example, the some display areas may be the primary energy consumption display area R9 located below the thermal output display area R5. Furthermore, the part of the display area that is erased to secure the display space for the breakdown display area R12 may be configured to be changeable according to, for example, the user's preferences.

[0073] Furthermore, in the case where the management system 100 is configured such that only one of a heat load and a cold load is assumed, it is sufficient to display only one of the displays related to heat and the displays related to cold on the home screen 132. In such a case, as shown in Fig. 8, since there is more display space, a breakdown display area R12A showing a breakdown of the sources of thermal output supply may be displayed from the beginning on the home screen 132B.

[0074] FIG. 8 is a schematic diagram illustrating another modified example of the home screen 132B. The home screen 132B shown in FIG. 8 displays the heat load display area R4 and the heat output display area R5, but does not display the cooling load display area R6 or the cooling output display area R7. The breakdown display area R12A is located to the right of the heat output display area R5. The content displayed in the breakdown display area R12A may be displayed within the heat output display area R5. In other words, some of the multiple areas may be configured to display a graph showing a breakdown of energy supply sources alongside other information.

[0075] <4. Things to keep in mind> Various modifications can be made to the various technical features disclosed in this specification without departing from the spirit of the technical creation. Furthermore, multiple embodiments and modifications shown in this specification can be combined to the extent possible. [Explanation of symbols]

[0076] 13...Display device 100... Management System 130...screen 132, 132A, 132B...Home screen (first screen) 500···Bar graph 501, 502...rod-shaped part 600 Control status display area 5021...First rod-shaped part 5022...Second rod-shaped part R1~R12...area

Claims

1. A display device included in a management system that manages energy, Multiple pieces of information related to power and heat are displayed in separate areas on a single screen. At least one of the plurality of areas displays information for today and information for the previous day; The information from the previous day is a first integrated value which is an integrated value for the previous day; A second integrated value that is an integrated value from the start time of the previous day to the same time as the current time of the current day on the previous day; A display device comprising:

2. The display device according to claim 1 , wherein the plurality of pieces of information are pieces of information relating to power and heat in the management system.

3. The display device according to claim 1 , wherein the area for displaying the information for today and the information for the previous day includes a bar graph showing the information for today and the information for the previous day.

4. The bar-shaped portion showing the information of the previous day is a first bar-shaped portion indicating the first integrated value; a second bar portion that is displayed in a distinguishable manner superimposed on the first bar portion and indicates the second integrated value; The display device of claim 3 , comprising:

5. The display device according to claim 3 , wherein the bar-shaped portion indicating the information for today indicates an integrated value from the start time of the day to the current time.

6. The display device according to claim 1 , wherein at least one of the plurality of regions is capable of switching between displaying a graph showing a breakdown of energy supply sources and other information.

7. The display device according to claim 1 , wherein the plurality of pieces of information further include fuel usage information indicating the amount of fuel used in the management system.

8. The display device according to claim 7 , wherein the area displaying the fuel usage information is capable of switching between displaying information for each type of fuel.

9. The display device according to any one of claims 1 to 8, wherein the plurality of pieces of information further include at least one of energy consumption information indicating the amount of energy consumed in the management system and carbon dioxide emission information indicating the amount of carbon dioxide emitted in the management system.

10. The display device according to claim 1 , wherein the one screen further includes a control status display area that displays a control status of the management system.

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