JP2007233498A - Energy management system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an energy management system which is high in usability and versatility. <P>SOLUTION: On a registration screen to be displayed at a display device when a display program is downloaded to a browser, an arithmetic expression is prepared by inputting it according to the arbitrary combination of four arithmetical operations, parentheses, exponentiation, and coefficients. On the registration screen, the arithmetic expression is prepared with a mathematical equation image from the four arithmetical operations, parentheses, exponentiation, and coefficients so that it is possible to easily compile the arithmetic expression. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to an energy management system used for energy saving analysis.

  Energy management systems have been introduced to save energy in buildings and factories. The energy management system collects data related to energy such as the amount of power to be monitored and displays the data (see, for example, Patent Document 1). As a result, it is possible to grasp the energy usage status, the degree of achievement of energy saving, and the operation status of the equipment, help to propose an energy management plan, and promote energy saving.

JP 2002-175172 A

  Energy saving analysis in the energy management system compares the measurement data such as the amount of electricity and temperature / humidity obtained from the installed equipment and the calculation formula (proportional calculation, sum, difference, etc.) of the measurement data of multiple equipment. This is done by comparing the results calculated by. Such an arithmetic expression is incorporated in advance in the energy saving analysis program. Therefore, it is necessary to create a program every time a new energy management system is introduced, and the program is rewritten each time the equipment is replaced or the floor plan is changed. For this reason, the conventional energy management system has problems in terms of usability and versatility.

  The present invention has been made in consideration of the above problems, and provides an energy management system that is highly usable and versatile.

  In the energy management system according to the present invention, on the registration screen displayed on the display device when the display program is downloaded to the browser, the arithmetic expression is input by any combination of the four operators, parentheses, power, and coefficients. Create by.

  According to the present invention, on the registration screen, an arithmetic expression can be created from a mathematical image from the four arithmetic operators, parentheses, power, and coefficients, so that the arithmetic expression can be easily edited.

  FIG. 1 shows an energy management system according to an embodiment of the present invention. This energy management system collects and manages environmental data such as power consumption, temperature, and humidity of buildings. In this system, the server machine 1 transmits measurement data of measurement points of various equipment 3 (such as watt hour meters and other meters) stored and stored in the equipment control device 2 via the communication network I (LAN). collect.

  In this embodiment, a user interface for creating an arithmetic expression (hereinafter referred to as “calculation point registration screen”) is provided online, is connected to the same communication network I, and can access a user interface display program using a browser. It can be displayed and operated by a terminal C (client PC) having a function.

  In addition, the measurement points of the various equipment 3 are managed in a centralized manner by assigning management information (hereinafter, TAG points) indicated by unique codes (for example, multi-digit alphanumeric characters).

  FIG. 2 shows a functional configuration of the server machine 1 in the embodiment of FIG. The server machine 1 includes a data collection unit 11 that collects measurement data, a storage medium 12 that stores the collected measurement data (hereinafter referred to as “database”), and a virtual measurement point (hereinafter referred to as “calculation point”). An internal file storage unit 13 that stores internal files (such as a local file in a server such as a CSV file or a database), a user interface display program storage unit 14 that stores a user interface display program, and an external program (for example, CGI: An external program storage unit 15 for storing a common gateway interface) and a web server 16.

  Furthermore, an input / output circuit 4 (communication interface capable of transmitting and receiving communication protocols) with the communication network I, a display control circuit 6 (RGB interface), a display device 5 (for example, a display device), and an input device 7 (for example, Keyboard).

  FIG. 3 shows a series of operation processes of the data collection unit 11. The data collection unit 11 periodically transmits an acquisition request for measurement data stored and stored in the device control device 2 from the input / output circuit 4 to the device control device 2 via the communication network I (LAN). Get measurement data. The data collection unit writes the acquired measurement data in a predetermined storage location in the database 12.

  Subsequently, the data collection unit 11 stores the measurement data of each cycle in the database 12 and then obtains calculation points (TAG points and calculation formulas of the measurement points) defined in the internal file of the internal file storage unit 13 to perform calculation. Measurement data of the measurement point defined for the point is acquired from the database, calculation point data is created by calculation processing, and written to a predetermined storage location in the database 12.

  The database 12 in this embodiment includes a data table and an index table. The data table includes a table for storing measurement data at each measurement point and a table for storing calculation point data. Each data type (power amount, temperature, humidity, etc.) and cycle (10 minutes, 1 hour, day, (Each month, year, etc.) has a separate table. The data for each cycle is the 10-minute data obtained from the device control device 2, and the 1-hour data, the day data, the month data, and the year data are obtained from the device control device 2, respectively. Stores edited (difference, sum, average, etc.) data. Further, the correspondence between the field (= column = column) of each data table and the TAG point of the measurement point and the calculation point is mapped and managed in the index table.

  The internal file storage unit 13 stores calculation point definition information. Calculation point definition information is created by inputting or selecting a calculation point registration screen displayed on a browser using the input device 7.

  The calculation point definition information includes a calculation point creation method, a TAG point, a name, a measurement point as a variable, a calculation formula, and a unit, which will be described later. Calculation point definitions can be easily created, changed, or deleted by a predetermined operation on a calculation point registration screen described later.

  The calculation point screen as a user interface is displayed on the display device 5 (or terminal C: client PC) by downloading the user interface display program from the user interface display program storage unit 14 to the browser. In addition to the calculation point registration screen, the user interface includes a graph screen and a table screen for displaying data.

  Hereinafter, a case where the calculation point registration screen is displayed on the display device 5 of the server machine 1 will be described.

  When information selected or input by the input device 7 is written in the internal file on the calculation point registration screen, the calculation point registration screen downloaded to the browser makes a file creation request from the input / output circuit 4 to the Web server 16. Upon receiving the request, the Web server 16 issues an instruction to write to the internal file to the external program, and the external program creates the internal file. When the file creation is completed, the external program returns a file creation result to the Web server 16, and the Web server 16 returns a response message from the input / output circuit 4 to the calculation point registration screen on the browser. The user interface display program displays the response result on the display device 5.

  In addition, when acquiring measurement data on the data display screen (graph or table) of the user interface display program, the database 12 is accessed from the same route to acquire each data. The acquired data is converted into graphic data by the user interface display program and displayed on the display device 5.

  Depending on the type of software for creating the user interface display program, file creation and data calling can be performed by reading a normal file.

  FIG. 4 shows a display example of the calculation point registration screen.

  The calculation point registration screen has two calculation formula creation interfaces. It is an interface for creating general arithmetic expressions and an interface for creating additive arithmetic expressions.

  The general arithmetic expression creation interface is an interface for creating an arithmetic expression using four mixed formulas or parentheses, and the addition / subtraction expression creation interface is an interface for creating an arithmetic expression using only the addition / subtraction method. It is easy to create an arithmetic expression by using it properly according to the purpose.

  The method for creating an arithmetic expression using the general arithmetic expression creating interface is as follows.

An arithmetic expression for generating a general arithmetic expression is generated by arbitrarily combining a TAG point of a measurement point, four arithmetic operators (+, −, *, /), parentheses, power, and a coefficient. The measurement point is treated as a variable in the formula, and the user can assign a TAG point to the variable by selecting the name of the measurement point on the calculation point registration screen.

  The type of calculation point data is selected from the calculation point type pull-down 31. In this item, a TAG name, a TAG point, and a unit, which are roughly classified codes of TAG points, are automatically selected. As an example of the calculation point type, there are electric energy, gas amount, temperature, humidity, dimensionless number, etc. as options.

  Next, an arithmetic expression creation method is selected from the arithmetic expression type pull-down 33. As options, the above-described general arithmetic expression and addition / subtraction arithmetic expression are provided. Here, a general arithmetic expression is selected. The case where the addition / subtraction equation is selected will be described later.

  From the TAG name pull-down 34, TAG names that can be registered in the calculation points of the type selected by the calculation point type pull-down 31 are developed. An arbitrary TAG name is selected from the TAG name pull-down 34. The names of the measurement points registered in the selected TAG are displayed in the device name list 21. From the measurement point names displayed in the device name 21, a measurement point to be registered as a variable of the arithmetic expression is selected. By pressing any of the selection buttons 24A to 24H with the measurement point selected, the measurement points are assigned to the opposing variables 22A to 22H. By repeating the same operation, measurement points are registered in the variables 22A to 22H.

  At this time, measurement points may be registered for some of the variables 22A to 22H, or measurement points may be assigned in random order instead of sequentially from 22A.

  After assigning arbitrary measurement points to the variables 22 </ b> A to 22 </ b> H, the display device 5 inputs the variables A to H, the four arithmetic operators, the parentheses, the power and the coefficient to which the measurement points are assigned in the arithmetic expression input field 23. In the arithmetic expression input field 23, it is possible to directly input a mathematical expression as shown in FIG.

  Finally, the name of the calculation point is input to the registration name 30 and the registration button 35 is pressed to register it in the internal file 13.

  The method for creating an arithmetic expression using the interface for creating an addition / subtraction arithmetic expression is as follows.

  The calculation point in the adjustment calculation formula creation is created from the TAG point of the measurement point and the addition / subtraction operator (+, −). In the case of an arithmetic expression using only the addition / subtraction method, no priority is generated in the calculation. Therefore, in the calculation of the addition / subtraction arithmetic expression, the operator input can be omitted and the name of the measurement point can be selected for each of the sum / difference groups.

  That is, when measuring points are selected, the measuring points are assigned to the sum group 25, that is, the group for addition calculation, and the difference group 26, that is, the group for subtraction calculation. The created arithmetic expression is calculated in the order of the measurement data registered in the difference group 26 from the measurement data registered in the sum group 25.

  The type of calculation point to be created is selected from the calculation point type pull-down 31, and the addition / subtraction calculation formula is selected from the calculation type selection pull-down 33. At this point, the TAG point and unit of the arithmetic expression are automatically selected.

  From the TAG name pull-down 34, TAG names that can be registered in the calculation points of the type selected by the calculation point type pull-down 31 are developed. An arbitrary TAG name is selected from the TAG name pull-down 34. The names of the measurement points registered in the selected TAG are displayed in the device name list 21. From the measurement point names displayed in the device name 21, the measurement points to be registered in the calculation formula are selected. At this time, a plurality of measurement points to be registered in each of the sum group or difference group can be selected.

  With the measurement point selected, the selection button 27A or 27B is pressed. When 27A is pressed, the selected measurement point is registered in the sum group 25, and when 27B is pressed, the selected measurement point is registered in the difference group 26.

  Next, the name of the calculation point is input to the registration name 30, and the registration button 35 is pressed to register it in the internal file.

  The method for correcting the contents of the calculation points already defined is as follows.

  First, a method for correcting the definition information of general arithmetic expressions will be described.

  An open button 36 is pressed to read out a calculation point whose definition information is to be changed. At this time, the user interface display program calls the contents of the designated calculation point from the internal file and displays it on the calculation point registration screen.

  The arithmetic expression can be changed by rewriting the contents displayed in the arithmetic expression input field 23.

  The addition and release of the variables 22A to 22H are as follows.

  The addition of the variables 22A to 22H is the same as the method for creating the general arithmetic expression described above.

  The variables 22A to 22H can be released by pressing the release buttons 24A to 24H for the variables A to H. When variables are registered in the variables 22A to 22H, the selection buttons 24A to 24H are changed to release buttons.

  When the change of the arithmetic expression and the assignment of the measurement points of the variables 22A to 22H are completed, the definition can be redefined in the internal file by pressing the registration button 35. At this time, the same TAG point can be overwritten or defined as another TAG point.

  Next, a method for correcting the definition information of the addition / subtraction arithmetic expression will be described. The method for calling the defined calculation points is the same as that for calling the general calculation expression described above.

  In addition / subtraction calculation formula creation, it can be changed only by adding and canceling registered measurement points. The registered measurement points are released separately for the sum group 25 and the difference group 26. Select the measurement point you want to cancel from any group of sums and differences. At this time, a plurality of measurement points can be selected. With the measurement point selected, the release button 28A or 28B is pressed. 28A cancels the measurement point of the sum group 25 and 28B cancels the difference group 26.

  The redefinition of the calculation point and the definition to another TAG point are the same as the creation procedure for creating the addition / subtraction equation described above.

  As described above, according to the present embodiment, an arithmetic expression using the four arithmetic operators (+, −, *, /), parentheses, powers, and coefficients can be created as a mathematical image, and an arithmetic expression based on equipment replacement or the like. These changes can be easily performed by the user. In addition, by providing an interface for creating an addition / subtraction arithmetic expression, it becomes possible to easily create an arithmetic expression corresponding to the application.

1 shows an energy management system according to an embodiment of the present invention. The functional configuration of the server machine is shown. The operation process of a data collection part is shown. The display example of a calculation point registration screen is shown. An example of an arithmetic expression input is shown.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 ... Server machine, 2 ... Equipment control apparatus, 3 ... Equipment, 4 ... Input / output circuit, 5 ... Display apparatus, 6 ... Display control circuit, 7 ... Input device, 11 ... Data collection part, 12 ... Storage medium, 13 ... internal file storage unit, 14 ... user interface display program storage unit, 15 ... external program storage unit, 16 ... Web server.

Claims (3)

In the energy management system that calculates the measurement data from the equipment based on the calculation formula,
A display device for displaying a registration screen for creating the arithmetic expression;
An input device for inputting the arithmetic expression on the registration screen by an arbitrary combination of an arithmetic operator, parentheses, a power, and a coefficient;
Means for displaying the registration screen on the display device by being downloaded to a browser;
After inputting the arithmetic expression, an internal file in which the arithmetic expression is registered by a predetermined operation on the registration screen;
An energy management system comprising:   The energy management system according to claim 1, wherein an arithmetic expression can be created only by addition and subtraction among the four arithmetic operators. 3. The energy management system according to claim 1, wherein the display device is a client PC, and the calculation formula is created from the client PC.

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