JP2013015883A - Energy saving support system - Google Patents

Abstract

[PROBLEMS] In an energy saving support system, a large-scale business with many places where power is used enables users to know the amount of power used in real time and take measures to suppress power usage. Do it.
A power management terminal (slave unit) that measures the power consumption of electrical equipment and a temperature / humidity sensor (slave unit) that measures temperature and humidity are installed at each site that consumes power, and a power management terminal The (master unit) receives measurement data from them wirelessly and holds them. Then, the power management terminal wirelessly transmits the measurement data to the display terminal, and the display terminal displays the power consumption amount, temperature, and humidity status at each site in real time. The power management terminal integrates the power consumption amount over a certain period, and instructs the display terminal to display a warning screen when the upper limit power consumption amount for warning is reached.
[Selection] Figure 1

Description

  The present invention relates to an energy saving support system, and more particularly, to an energy saving support system suitable for effectively providing energy saving support in a large-scale business entity such as a large company or a franchise business type.

  In recent years, global environmental problems, especially the reduction of greenhouse gases, have been discussed, and it is necessary for companies to take energy-saving measures.

  In response to this, the “Act on Rationalization of Energy Use”, which was revised in 2008 and was enforced in April 2010, changed the energy management of each factory and business unit to the business unit (enterprise unit). The regulatory system has been changed to manage energy, and corporations that own more than a certain number of stores and offices are required to understand and report the power consumption of the entire company including the stores and offices. The business operator was then given the goal of “reducing energy consumption intensity by 1% or more on average over the medium to long term”.

  Thus, in order to tackle energy saving as a company, a system for managing energy by a computer system has been proposed.

  Patent Document 1 discloses an energy management system that outputs a load adjustment width of energy of an installed device as a prediction result based on history data accumulated in a load operation / adjustment history database.

  Patent Document 2 discloses a use energy management apparatus that displays statistical information of past use energy actual values and can set future use energy plan values according to time zones.

JP 2010-204833 A JP 2011-10470 A

  Specified companies and specified chain operators (the headquarters of franchise chain business and its affiliated stores) regulated by the above-mentioned “Law on Rational Use of Energy” It is a large-scale business with a conversion of 1500 kl or more.

  Because there are many factories, offices, and stores that use electricity (hereinafter referred to as “sites”) where such companies use electricity, In order to measure and centrally manage power usage at each site, it is necessary to upload measurement data to the server.

  In addition, in high-voltage power reception contracts and special high-voltage contracts, which are power usage contracts between electric power companies and large-scale power consumers, for example, the usage amount that peaks the power usage every 30 minutes is set as the basis for the subsequent 13 months. In many cases, so-called “demand contracts” are made, such as the basis for calculating charges.

  Therefore, in order to suppress the power usage fee, it is necessary for the user to know the amount of power used in real time and take measures to suppress the power usage. In the systems shown in Patent Document 1 and Patent Document 2, past power consumption can be displayed and future power prediction can be performed, but the user can take measures to suppress the use of power in real time. Is not considered.

  In addition, in order for users to know and manage power usage in real time, it is necessary to measure at each site in a short period of time, but for large-scale businesses with many power usage locations, When enormous amounts of measurement data at each site are sent to the server randomly, there is a problem that communication congestion and server overload occur.

  The present invention has been made to solve the above-described problems, and a large-scale business operator with many places where power is used can take measures to allow the user to know the amount of power used in real time and suppress the use of power. It is possible to provide an energy saving support system that can perform power management efficiently and efficiently.

  In the energy saving support system of the present invention, a power measurement monitor that is installed at each site that consumes power and measures the amount of power consumption of electrical equipment, a temperature and humidity sensor that measures temperature and humidity at each site, and power measurement It has a power management terminal that wirelessly receives and holds measurement data at each installed site from the monitor and temperature / humidity sensor. Here, the power measurement monitor and the temperature / humidity sensor are slave units in wireless communication, and the power management terminal corresponds to the master unit.

  Then, the administrator can wirelessly receive the measurement data at each site from the power management terminal, and can know the power consumption situation, temperature, and humidity status at each site in real time from the display terminal that displays the value. .

  The energy saving support system includes a server that is connected to a power management terminal via a network such as the Internet and holds management information on each site.

  Then, the power management terminal receives and holds the upper limit power consumption for warning at each site from the server, accumulates the power consumption for a certain period, and reaches the upper limit power consumption for warning The display terminal is instructed to display a warning screen.

  At this time, message data unique to each site is displayed on the warning screen, and a response is instructed. When the administrator inputs that the correspondence has been executed, the fact that the energy saving correspondence has been performed is left in the server as a history.

  In addition, the power management terminal uploads measurement data at each site to the server at a predetermined upload time, and uploads to the power management terminal when the server detects congestion of the communication line or server overload. Instruct to change the time.

  According to the present invention, a large-scale business with many places where power is used enables the user to know the amount of power used in real time and take measures to suppress power usage, and perform power management efficiently. It is to provide an energy saving support system that can be used.

It is a system configuration figure of an energy-saving support system concerning one embodiment of the present invention. It is a block diagram which shows the structure of the power management terminal which concerns on one Embodiment of this invention. It is a block diagram which shows the structure of the display terminal which concerns on one Embodiment of this invention. It is a figure explaining the mode in the store of the provider picked up in one embodiment of the present invention. 4 is a diagram showing a measurement data table held in the power management terminal 100. FIG. It is a figure which shows the measurement data transmitted to the display terminal 200 from the power management terminal 100. 3 is a diagram showing a site management table held in a server 20. FIG. 3 is a diagram showing a power management terminal management table held in a server 20. FIG. It is a timing chart which shows the information exchanged with the process of each part of the energy-saving support system concerning one embodiment of the present invention (the 1). It is a timing chart which shows the information exchanged with the process of each part of the energy-saving support system concerning one embodiment of the present invention (the 2). It is a figure which shows the main screen of an energy saving assistance system. It is a figure which shows the screen which displayed the graph of the power consumption in a site. It is a figure which shows the screen which displayed the power consumption amount, temperature, and humidity list in a site. It is a figure which shows the warning screen of power consumption. It is a figure which shows an aggregation screen.

  Hereinafter, an embodiment according to the present invention will be described with reference to FIGS.

First, the configuration of an energy saving support system according to an embodiment of the present invention will be described with reference to FIGS. 1 to 3.
FIG. 1 is a system configuration diagram of an energy saving support system according to an embodiment of the present invention.
FIG. 2 is a block diagram showing the configuration of the power management terminal according to the embodiment of the present invention.
FIG. 3 is a block diagram showing a configuration of a display terminal according to an embodiment of the present invention.

  As shown in FIG. 1, the energy saving support system according to the present embodiment includes a power management terminal 100 (master unit), power measurement monitors (slave units) 10a and 10b, a temperature / humidity sensor 10c (slave unit), and a display terminal 200. , A pulse detector 70, an electric energy sensor 90, a router 40, a client terminal 30, and a server 20.

  The power management terminal 100 receives and stores measurement data from the power measurement monitors 10a and 10b corresponding to the slave units and the power and temperature and humidity from the temperature / humidity sensor 10c that are consumed by the equipment for a certain period of time. To upload the measurement data to the server 20. Moreover, the measurement data for every fixed time are transmitted to the display terminal 200. Further, the measurement data may be integrated and a warning may be sent to the display terminal 200. In this embodiment, the interval for receiving measurement data from the power measurement monitors 10a and 10b and the humidity temperature sensor 10c and the measurement interval for the electric energy are set to 1 minute. In addition, the period for uploading the measurement data to the server 20 is 12 hours in this embodiment. The detailed configuration and operation of the power management terminal 100 will be described later in detail.

  The power measurement monitors 10a and 10b transmit the measurement data obtained by measuring the amount of power to the power management terminal 100, which is the parent device, every minute. The power measurement monitor 10a is, for example, a monitor that is connected to the pulse detector 70 installed in the wattmeter 60 and measures the amount of power, and the power measurement monitor 10b is installed in the distribution board 80, for example. It is a monitor of the type that is connected to the electric energy sensor 90 and measures the electric energy.

  The temperature / humidity sensor 10c transmits the measured temperature and humidity at the installation location to the power management terminal 100, which is the parent device, every minute.

  The display terminal 200 is, for example, a general-purpose tablet PC, and displays information on power consumption, humidity, and temperature at each site based on measurement data sent from the power management terminal 100. In addition, information on power consumption, humidity, and temperature at each site for each hour, day, and month is displayed in a graph format. Further, when there is a possibility that the power consumption amount at each site may exceed the target value, a warning screen is displayed based on information sent from the power management terminal 100.

  The router 40 is a device that connects the power management terminal 100 to a network. The power management terminal 100 is connected to the Internet by the router 40 and sends measurement data to the server 20 or receives management information of the server 20.

  The server 20 accumulates site measurement data and holds management information for each site.

  The client terminal 30 is a device for referring to measurement data of the server 20 and report information based thereon, and is, for example, a general-purpose personal computer (hereinafter referred to as a PC) that can be connected to a network.

  Next, the hardware configuration of the power management terminal 100 will be described in detail.

  As shown in FIG. 2, the power management terminal 100 includes an MPU 110, a RAM 120, a ROM 130, a network IF 140, a USB IF 150, a card slot 160, a wireless IF 170, and an antenna 180.

  An MPU (Micro Processor Unit) 110 is a control unit, executes a program, performs various calculations, and issues input / output commands to each unit.

  A RAM (Random Access Memory) 120 is a semiconductor main storage device, and holds programs executed by the MPU 110 and work data for calculation.

  A ROM (Read Only Memory) 130 is a memory that holds a program to be executed. In the ROM 130, a power management program is written when the apparatus is manufactured. The power management program receives the measurement data from the slave unit, stores it in the SD / MicroSD card, integrates the power consumption of the measurement data at each site, holds it as a table, and periodically measures it on the server 20 A function for transmitting data collectively, a function for receiving and referencing site management information from the server 20, a function for transmitting measurement data from each site to the display terminal 200, and a power consumption amount at each site from the measurement data When integrated and approaches the target power consumption, it has a function of sending a warning to the display terminal 200.

  The power management program may be periodically rewritten from the server 20 and updated to the latest one.

  The network IF 140 is an interface for a wired network, and is connected to the router 40 by, for example, Ethernet (registered trademark). The power management terminal 100 transmits measurement data from each site to the display terminal 200 via the network IF 140 and transmits the measurement data to the server 20 collectively. In addition, site management information is received from the server 20 via the network IF 140.

  The USBIF 150 is an interface for connecting a USB (Universal Serial Bus) device. The USB is a general-purpose serial interface, and is used for maintenance such as writing the address of the server 20 in the power management terminal 100 of the present embodiment.

  The card slot 160 is a slot for inserting an SD / MicroSD memory card. The SD / MicroSD memory card is a standardized memory card using a flash memory as a storage medium. The power management terminal 100 of this embodiment uses the SD / MicroSD memory card inserted into the card slot 160 as auxiliary storage, and the measurement data and necessary tables from each site are held in the SD / MicroSD memory card. The

  The wireless IF 170 is an interface for transmitting and receiving radio waves from the antenna 180 and performing wireless communication. As the wireless communication, for example, communication according to a standard such as IEEE802.11b or Bluetooth with a frequency band of 2.4 GHz can be used. The power management terminal 100 according to the present embodiment collects measurement data from the slave units installed at each site via the wireless IF 170 and transmits the measurement data and necessary information to the display terminal 200.

  Next, the hardware configuration of the display terminal 200 will be described in detail.

  As shown in FIG. 3, the power management terminal 100 includes a processor 210, a RAM 212, a flash memory 214, a display IF 220, a liquid crystal display (LCD) 222, a touch panel IF 230, a touch panel 232, an audio IF 240, a speaker 242, and a card. It consists of a slot 250, a USBIF 260, a wireless IF 270, and an antenna 272.

  The processor 210 is a control unit, executes a program, performs various calculations, and issues input / output commands to each unit.

  A RAM (Random Access Memory) 212 is a semiconductor main storage device, and holds programs executed by the processor 210 and work data for computation.

  The flash memory 214 is a memory that holds programs to be executed and data. For example, a power management program is installed and held in the flash memory 214 via the USBIF 230. The power management program receives the measurement data from the power management terminal 100, holds it in the flash memory 214, integrates the function of displaying it on the screen, the power consumption of the measurement data at each site, and displays it as a graph Function, a function to communicate with a server connected to the Internet via the wireless IF 270, receive and display weather forecast information, etc., when the power consumption at each site approaches the target power consumption, It has a function of receiving a warning from the power management terminal 100 and displaying it.

  The display IF 220 is an interface for connecting a liquid crystal display (LCD) 222.

  The touch panel IF 230 is an interface for connecting the touch panel 232. In the tablet PC, commands or characters can be input by touching a panel integrated with a display portion with a finger or the like.

  The audio IF 240 is an interface for connecting a speaker 242 or a headphone (not shown) to output sound. As will be described later, it can be used to output a warning screen with sound when the target power at the site is approached.

  The card slot 250 is a slot for inserting an SD memory card. The display terminal 220 according to the present embodiment can be used for data capture or as a memory when the capacity of the flash memory 214 is insufficient.

  The USBIF 260 is an interface for connecting a USB (Universal Serial Bus) device. The USB is a general-purpose serial interface, and is used when the display terminal 200 of the present embodiment is connected to another PC, for example, to fetch a program or external data, or to connect a peripheral device.

  The wireless IF 270 is an interface for transmitting and receiving radio waves from the antenna 272 and performing wireless communication. The display terminal 200 of the present embodiment receives measurement data and necessary information from the power management terminal 100.

Next, the relationship between the energy saving support system of the present embodiment and the power consumption model of the operator will be described with reference to FIG.
FIG. 4 is a diagram for explaining a situation at a business operator's store picked up in one embodiment of the present invention.

  As shown in FIG. 4, an operator picked up in an embodiment of the present invention is a large-scale retail store 1000 on the same floor, an AV department 1100, a furniture department 1200, a food department 1300, a cash register 1400, and an office 1500. Is arranged.

  The AV section 1100 is equipped with an air conditioner 1110 (hereinafter referred to as “air conditioner”) and lighting as power consuming equipment. The power measuring monitor 1120 for the air conditioner, the power measuring monitor 1122 for lighting, and the temperature / humidity sensor 1130 is attached.

  In the furniture department 1200, an air conditioner 1210 and lighting are installed as power consuming equipment, and a power measuring monitor 1220 for the air conditioner, a power measuring monitor 1222 for the lighting, and a temperature / humidity sensor 1230 are attached.

  An air conditioner 1310, lighting, a refrigerated case 1340, and a refrigeration case 1342 are installed in the food department 1300 as power consuming equipment. The power measurement monitor 1320 for the air conditioner, the power measurement monitor 1322 for the illumination, the refrigeration case / refrigeration case A power measurement monitor 1324 and a temperature / humidity sensor 1330 are attached.

  The cash register 1400 is provided with illumination as a power consuming facility, and a power measurement monitor 1422 for illumination is attached.

  In the office 1500, a distribution board 1550 is installed, and a power measurement monitor 1526 capable of measuring power for each system is attached thereto. A power management terminal 1560 that communicates with each slave unit is placed in the office 1500. Further, it is assumed that the energy manager of this business operator is in the office at the time of work, and monitors the power consumption amount in the store by the display terminal 1570.

Next, a data structure used in the energy saving support system according to the embodiment of the present invention will be described with reference to FIGS.
FIG. 5 is a diagram showing a measurement data table held in the power management terminal 100.
FIG. 6 is a diagram showing measurement data transmitted from the power management terminal 100 to the display terminal 200.
FIG. 7 is a diagram showing a site management table held in the server 20.
FIG. 8 is a diagram showing a power management terminal management table held in the server 20.

  The measurement data table is a table that holds power consumption, temperature, and humidity measured by the power measurement monitor / temperature / humidity sensor, and is held in the SD / MicroSD card of the power management terminal 100 shown in FIG. As shown in FIG. 5, the measurement data table includes fields of site ID, time, time type, monitor type, power consumption, temperature, and humidity.

  The site ID stores a unique identifier for identifying each site. The time is the time measured by the power measurement monitor / temperature / humidity sensor. The time type indicates the time width of the measured value. When “1 minute” is described, each measured value is consumed for one minute at the site, going back from the time described in the time field. It represents the amount of power, the average temperature measured during one minute at that site, and the average humidity measured during one minute at that site. The monitor type is an identifier indicating the type of power consumption, temperature, or humidity measured. The power consumption field is measured by the power measurement monitor [kWh], the temperature field is measured by the temperature / humidity sensor [° C], and the humidity field is measured by the temperature / humidity sensor. Humidity [% RH] is represented. The unit of humidity is relative humidity expressed as a percentage.

  Then, the measurement data shown in FIG. 6 is transmitted from the power management terminal 100 to the display terminal 200. In the figure, the site ID is “AV section”, the time is “June 24, 2011, 12: 3”, the time type is “1 minute”, the monitor type is “power”, and the time is 12: 2 It shows that the power consumption at -12: 3 is “23 kWh”.

  The site management table is a table that holds information on each site, is held in the server 20, and the latest table information is periodically transmitted to the power management terminal 100.

  As shown in FIG. 7, the site management table includes fields of site ID, target value power consumption, warning upper limit power, message data, and administrator mail address.

  The site ID stores a unique identifier for identifying each site to be managed. The target value power consumption is a target power consumption value determined at each site in a certain time (for example, 30 minutes). This target value power consumption is also transmitted from the power management terminal 100 to the display terminal 200 and displayed on the screen. The warning upper limit power amount is a value that becomes an upper limit when a warning screen for alerting the administrator is displayed when this value is reached in a fixed time. Even when the same site is provided with a plurality of values, it is possible to use different warning screens displayed on the display terminal 200 from mild warning messages to serious warning messages. The message data is message text displayed on a warning screen described later. The administrator mail address is a registered address for sending a warning e-mail when the warning upper limit power amount is reached. The administrator email address may be an email address of a general PC or mobile phone as long as the Internet can be connected.

  The power management terminal management table is a table that holds information of the power management terminal 100 and is held in the server 20. As shown in FIG. 8, the power management terminal management table includes fields of terminal ID, IP address, and upload time.

  The terminal ID stores an identifier for uniquely identifying the power management terminal 100. As the IP address, an IP address that is a logical address of the power management terminal 100 is stored. The upload time is a schedule time for uploading the contents of the measurement data to the server 20. In the example of FIG. 8, all the power management terminals 100 upload twice a day at 6:00:00 and 18:00:00.

Next, the processing of the energy saving support system according to the embodiment of the present invention and the user interface on the display terminal 200 will be described with reference to FIGS. 9A to 14.
9A and 9B are timing charts showing information exchanged with the processing of each unit of the energy saving support system according to the embodiment of the present invention.
FIG. 10 is a diagram showing a main screen of the energy saving support system.
FIG. 11 is a diagram showing a screen displaying a graph of power consumption at the site.
FIG. 12 is a diagram showing a screen displaying a list of power consumption, temperature, and humidity at the site.
FIG. 13 is a diagram showing a power consumption warning screen.
FIG. 14 is a diagram illustrating a counting screen.

  First, the power measurement monitors 10a and 10b shown in FIG. 1 transmit measurement data related to power to the power management terminal 100 (A01).

  At the same time, the temperature / humidity sensor 10c transmits temperature / humidity measurement data to the power management terminal 100 (A02).

  Both of these transmissions occur every minute.

  Further, the data of the site management table shown in FIG. 7 is transmitted from the server at regular intervals.

  The power management terminal 100 stores the measurement data received from the power measurement monitors 10a and 10b and the temperature / humidity sensor 10c as a measurement data table in the SD / MicroSD card (S01).

  Next, the power management terminal 100 transmits measurement data in the format shown in FIG. 6 every minute (A04).

  Further, the power management terminal 100 periodically transmits a target value power consumption, a temperature reference value, and the like to the display terminal 200 (A05). The transmission of the target value power consumption and the temperature reference value needs to be displayed on the display terminal 200 when it is displayed on the screen.

  The display terminal 200 displays the power consumption, temperature, and humidity from the received measurement data on the screen (S20).

  The screen displayed on the display terminal 200 is, for example, a main screen shown in FIG. 10, a screen displaying a graph of power consumption at the site shown in FIG. 11, and a power consumption, temperature, humidity at the site shown in FIG. It is the screen which displayed the list of.

  The main screen includes a measurement data display item 401, a date / time display item 402, a weather forecast display item 403, and a free area 404. A global warming display 410 is shown in the free area 404 of the main screen.

  The measurement data display item 401 displays the latest power consumption amount, temperature, power consumption target value, and temperature reference value based on the measurement data received from the power management terminal 100.

  The date / time display item 402 displays the date / time by a built-in clock or calendar. The date / time display item 402 may be synchronized with the date / time acquired by the power management terminal 100 from the server 20.

  The weather forecast display item 403 displays information on the weather forecast received by the display terminal 200 from an external server. The external server may be the server 20 that is the file server shown in FIG. 1 or another server connected to the Internet.

The global warming display 410 displays power consumption for a certain period in terms of CO ₂ . FIG. 10 shows that there was a 1.2 kg CO ₂ reduction effect on a monthly basis. Also, when the CO ₂ reduction effect deteriorates, an image showing that the natural environment has deteriorated is displayed, for example, an image in which trees are withered and green spaces are desertified, and alerts what is being viewed. You may make it do.

  The user can also display the graph 430 as shown in FIG. 11 by sliding the touch panel in the free area 404. The scale of this graph can be changed by a scale bar 436. In FIG. 11, a bar graph 432 of hourly power consumption and a temperature line graph 434 are displayed on a daily scale for the site of the AV department.

  Further, by touching the measurement data display item 401, a site for displaying information can be switched. FIG. 12 shows the display of the measurement data of the entire store. Further, the user can indicate the power consumption, temperature, and humidity at the site in a list format by sliding the touch panel in the free area 404.

  In FIG. 12, the “AV department”, “furniture department”, “food department”, “register”, “office” power consumption, power consumption trend, temperature reference value shown in the model of FIG. Temperature and humidity are displayed based on the latest measurement data. Here, the trend of power consumption indicates a tendency of change in power consumption, and is indicated by three types of arrow icons indicating a downward trend, a flat level, and an upward trend. An upward icon indicating an upward trend may be displayed in red for warning.

  Next, the power management terminal 100 accumulates the power consumption of the measurement data (S02), and when the warning upper limit power amount shown in FIG. 7 is reached (S03), the power management terminal 100 displays the display terminal 200. Is instructed to display a warning screen, and the corresponding message data is transmitted (A06).

  Then, the display terminal 200 displays a warning screen as shown in FIG. 13 in the free area 404 (S21).

  FIG. 13A displays the message “The power consumption of the AV department has increased” because the power consumption of the site of the AV department has reached 22 kWh, which is the warning upper limit power consumption.

  In addition, FIG. 13B shows a message saying that “the power consumption amount of the food department has exceeded the target value” because the power consumption amount of the food department site has exceeded the warning upper limit power amount of 32 kWh. it's shown.

  At the same time, a warning e-mail is sent via the mail server to the administrator e-mail address shown in FIG. 7 (A07). The administrator can confirm the warning email by the email software of the client terminal 30.

  As described above, in the energy saving support system according to the present embodiment, since the power measurement monitor is installed for each site, fine power management can be performed for each site. As shown in b), the response message can also be changed according to the individuality of the site, so that the energy saving manager can easily take the response.

  In the description of the present embodiment, the display of the warning screen based on the power consumption has been described. Similarly, when the temperature is lowering than the temperature reference value in FIG. May be issued.

  When the execute button 452 is touched, it is transmitted to the power management terminal 100 (A08a), and the power management terminal 100 reports the result to the server 20 (A08b), indicating that energy saving measures have been taken. It is preserve | saved at the server 20 as a log | history of a classification and a corresponding date (S30).

  As described above, the energy saving support system according to the present embodiment measures the power and temperature / humidity of the site with the power measurement monitors 10a and 10b and the temperature / humidity sensor 10c at a short time interval of one minute, and the power management terminal 100 The administrator can check the status of the site almost in real time using the display terminal 200. When the determined power consumption value is exceeded, a warning screen is displayed on the display terminal 200 as described above, and the user is guided to take countermeasures to reduce power consumption. For this reason, even in the case of a business operator who has made a “demand contract” with a power company such as a high-voltage power receiving contract or a special high-voltage contract, the peak power consumption is not increased, so the electricity charge can be reduced. is there.

  Next, when the upload time of the server 20 comes (S04), the power management terminal 100 uploads the measurement data stored in the measurement data table to the server 20 (A09). This uploading time is performed in accordance with the uploading time shown in FIG.

  Then, the server 20 stores the uploaded measurement data (S31).

  Further, only one power management terminal 100 is illustrated in FIG. 1, but in the case of a large-scale business, there are many activity bases such as sales offices, stores, factories, and the like, and the measurement data is simultaneously transmitted to the server 20. Uploading may cause communication line congestion and the server 20 may be overloaded. In such a case, the server 20 monitors the traffic and load, and when the communication line is congested and the server 20 is overloaded (S32), for example, for half the power management terminals 100, Is instructed to change the upload time (A10). In the example shown in FIG. 8, when the server 20 is overloaded at 6:00:00 upload time, the first upload time of, for example, C store and D store in the power management terminal management table is set. Both of them are rewritten at 6:30, and the power management terminal 100 is instructed to change the upload time of the power management terminals 100 at the stores C and D to 6:30.

  By adjusting the upload time schedule of the power management terminal 100 in this way, even if there are many power management terminals 100 and the measurement time interval is as short as 1 minute, the communication line is congested and the server 20 is excessive. A large amount of measurement data can be uploaded to the server 20 without falling into a load.

  Next, when the client terminal 30 instructs to display the total screen (S10), the client terminal 30 requests necessary total data (A12), and the server 20 transmits the requested total data (S12). A13). Then, the aggregation screen 500 shown in FIG. 14 is displayed on the display screen of the client terminal 30.

  The totaling screen 500 shown in FIG. 14 shows a bar graph 520 of power consumption and a table of power consumption for one year as the power consumption of “entire store A” displayed in the total target selection combo box 510. 530.

  The target achievement display area 540 indicates that the total amount of power consumption for one year was a target achievement rate of 109% with respect to the target power consumption.

10a, 10b ... Electric power measurement monitor (child device), 10c (child device) ... temperature / humidity sensor, 20 ... server, 30 ... client terminal, 40 ... router, 70 ... pulse detector, 90 ... electric energy sensor, 100 ... electric power Management terminal (base unit), 200 ... display terminal,
110 ... MPU, 120 ... RAM, 130 ... ROM, 140 ... Network IF, 150 ... USBIF, 160 ... Card slot, 170 ... Wireless IF, 180 ... Antenna,
210 ... processor, 212 ... RAM, 214 ... flash memory, 220 ... display IF, 222 ... liquid crystal display, 230 ... touch panel IF, 232 ... touch panel, 240 ... audio IF, 242 ... speaker, 250 ... card slot, 260 ... USBIF, 270 ... Wireless IF, 272 ... Antenna.

Claims (4)

A power measurement monitor that is installed at each site that consumes power and measures the power consumption of electrical equipment,
A temperature and humidity sensor that measures the temperature and humidity at each site,
A power management terminal that wirelessly receives and holds measurement data at each installed site from the power measurement monitor and the temperature and humidity sensor, and
A display terminal that wirelessly receives measurement data at each site from the power management terminal and displays its value;
In an energy saving support system having a server connected to the power management terminal via a network and holding management information for each site,
The power management terminal receives and holds an upper limit power consumption warning at each site from the server,
When the power management terminal accumulates the power consumption for a certain period and reaches the upper limit power consumption to be warned, or when it is predicted that the upper limit power consumption will be reached, the power management terminal An energy saving support system characterized by instructing to display a warning screen. The power management terminal receives and holds the warning screen message data for each site from the server,
The power management terminal transmits message data of the warning screen to the display terminal,
The energy saving support system according to claim 1, wherein the display terminal displays the message data on the warning screen. The warning screen displayed on the display terminal has an input means for inquiring whether or not the response indicated by the message data has been performed,
The display terminal transmits a user input result to the power management terminal,
The power management terminal transmits an input result to the server,
The energy saving support system according to claim 1, wherein the server holds a received input result as a history. A power measurement monitor that is installed at each site that consumes power and measures the power consumption of electrical equipment,
A temperature and humidity sensor that measures the temperature and humidity at each site,
A power management terminal that wirelessly receives and holds measurement data at each installed site from the power measurement monitor and the temperature and humidity sensor, and
A display terminal that wirelessly receives measurement data at each site from the power management terminal and displays its value;
In an energy saving support system having a server connected to the power management terminal via a network and holding management information for each site,
The power management terminal uploads measurement data at each site to the server at a predetermined upload time,
An energy saving support system, wherein the server instructs the power management terminal to change the upload time when the server detects communication line congestion or server overload.

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