JP2023175542A - Energy calculation apparatus and energy calculation method - Google Patents

Abstract

To appropriately perform energy calculation even when the input of a meter value is accepted by a person in charge who has no expertise.SOLUTION: An energy calculation apparatus (100) according to the present application is provided with an acceptance unit (152) for storing the relationship between a meter value and its corresponding date and time in a storage unit, each time an input screen is displayed and an input between the meter value and the date and time is received, and an operation execution unit (153) for calculating a meter value per unit time in a period corresponding to the energy calculation from the storage unit and executing energy calculation based on the meter value per unit time.SELECTED DRAWING: Figure 3

Description

The present invention relates to an energy calculation device and an energy calculation method for calculating energy used in a building.

Conventionally, in order to determine whether a building's energy is being used efficiently, experts with specialized knowledge have performed energy calculations. For example, experts obtain energy calculation results by checking information from various meters installed in a building at appropriate times and inputting the information necessary for energy calculation into a center device or the like.

Note that there is Patent Document 1 as a technology for managing energy in buildings. In Patent Document 1, management data related to the energy supply of the building, management data related to the energy conversion system of the building, management data related to the energy transfer system of the building, and management data related to the energy demand of the building are acquired, and among the acquired management data, A technique has been disclosed in which, when one or more of the management data deviates from a predetermined threshold value, some kind of measure is taken so that the management data falls within the threshold value.

Japanese Patent Application Publication No. 2003-162573

However, currently, the central monitoring device of the building where the meters are installed and the center device that performs energy calculations are separate, and information on meters that are not connected to the network can be obtained by operating the central monitoring device. The situation is such that users with no specialized knowledge of energy calculations have no choice but to request input.

In this way, if a user without specialized knowledge inputs meter information, it may not be possible to perform energy calculations appropriately.

The present application is intended to solve such problems, and aims to appropriately perform energy calculation even when meter value input is received by a person in charge without specialized knowledge.

The energy calculation device according to the present application includes a reception unit that stores the relationship between the meter value and date and time in a storage unit each time an input screen is displayed and input of a meter value and date and time is received, and a reception unit that stores the relationship between the meter value and date and time in a storage unit, and and a calculation execution unit that calculates a meter value per unit time in a period of time, and executes an energy calculation based on the meter value per unit time.

The reception unit of the energy calculation device displays an input screen in which information about the meter value and date and time stored in the storage unit is set, and when corrections regarding the meter value and date and time are accepted, A process of updating the value and date and time to the corrected information may also be executed.

The calculation execution unit of the energy calculation device may execute the energy calculation again when the meter value and date and time stored in the storage unit are updated.

The reception unit of the energy calculation device further executes a process of detecting whether there is an error in the newly input meter value or date and time based on the plurality of meter values and date and time stored in the storage unit. You may.

According to the energy calculation device described above, even when input of a meter value is received by a person in charge without specialized knowledge, energy calculation can be performed appropriately.

FIG. 1 is a diagram showing a calculation system according to this embodiment. FIG. 2 is a diagram showing an example of an input screen. FIG. 3 is a functional block diagram showing the configuration of the energy calculation device according to this embodiment. FIG. 4 is a diagram showing an example of the data structure of the measurement data table. FIG. 5 is a flowchart showing the processing procedure of the energy calculation device.

Next, embodiments will be described with reference to the drawings. In addition, in the following description, the same reference numerals are given to the same component in each embodiment, and repeated description is omitted.

[About the calculation system]
An example of the calculation system according to this embodiment will be described. FIG. 1 is a diagram showing a calculation system according to this embodiment. As shown in FIG. 1, this calculation system 1 includes meters 10a, 10b, 10c, controllers 20a, 20b, another system 30, and an energy calculation device 100.

Meter 10a is connected to controller 20a. Meter 10b is connected to controller 20b. The meter 10c is connected to other systems 30. Controllers 20a and 20b are connected to energy calculation device 100 via network 50.

The meters 10a, 10b, and 10c are meters that measure the amount of energy used in the building. For example, the energy consumption measured by the meters 10a to 10c includes electric power consumption, gas consumption, and the like. In the following description, the meters 10a to 10c will be collectively referred to as "meter 10" as appropriate. In addition, the amount of energy used measured by the meter 10 will be referred to as a "meter value."

The controllers 20a and 20b control the connected meter 10 and acquire meter value information from the meter 10 at predetermined dates and times or every predetermined period. The controllers 20a and 20b transmit measurement data in which the identification information of the meter 10, the date and time when the meter value was measured, and the meter value are associated with each other to the energy calculation device 100. The controllers 20a and 20b repeatedly execute the above process. In the following description, the controllers 20a and 20b will be collectively referred to as "controller 20."

The other system 30 is a system that executes various processes using information obtained from the meter 10c and the like. Note that the energy calculation device 100 is not electrically connected to the meter 10c. Therefore, a user (such as a monitor) checks the meter value measured by the meter 10c and inputs the checked data into the energy calculation device 100.

The energy calculation device 100 periodically receives measurement data from the controller 20 and stores the received measurement data in the storage unit. Furthermore, the energy calculation device 100 displays an input screen and receives input of data confirmed by the meter from the user. For example, the user checks the input screen, operates the input section of the energy calculation device 100, and inputs the meter value of the meter 10c and the date and time to the input screen. The energy calculation device 100 stores data input on the input screen in a storage unit.

FIG. 2 is a diagram showing an example of an input screen. As shown in FIG. 2, this input screen 60 includes identification information, previous date and time, previous value, update date and time, and update value. The identification information is information that identifies the meter 10. The previous date and time indicates the date and time when the meter value was input last time. The previous value is the meter value input last time. The update date and time indicates the date and time when the meter value of the meter 10 was input this time. The updated value is the meter value input this time.

For example, when the user inputs the identification information of the target meter 10 into the identification information input field of the input screen 60, the energy calculation device 100 uses the input identification information based on the data stored in the storage unit. The previous date and time and previous value corresponding to the information are displayed on the input screen 60.

For example, on the first line of the input screen 60 in FIG. The corresponding previous date and time “March 1, 2022 20:00” and previous value “15600kw” are set and displayed.

Furthermore, in the first line of the input screen 60 in FIG. 2, the user operates the input unit of the energy calculation device 100 to input "March 1, 2022 15:00" as the update date and time corresponding to the identification information "M101". An example is shown in which "15650kw" is input as the updated value. For example, the user completes the input by pressing the settings button 61 on the input screen 60. The user can also cancel the input by pressing the cancel button 62 on the input screen 60.

The energy calculation device 100 stores the data input on the input screen 60 in the storage section. The energy calculation device 100 calculates the meter value per unit time in the period corresponding to the energy calculation based on the meter value and date and time stored in the storage unit, and calculates the meter value per unit time based on the meter value per unit time. , perform energy calculations.

As shown above, the energy calculation device 100 displays the input screen 60, receives meter value and date and time data from the user, stores it in the storage section, and based on the data stored in the storage section, The meter value per unit time is calculated for a period corresponding to the energy calculation, and the energy calculation is performed. Therefore, even if the meter value is not input by the user at a fixed date and time, energy calculation can be performed accurately.

For example, in the conventional technology, if the difference in meter values required for energy calculation is one month, the meter values are input at predetermined dates and times (for example, at 10 o'clock on the first day of each month and at 10 o'clock at the end of the month). However, the user who inputs data into the energy calculation device 100 according to this embodiment may input the meter value and date and time at a convenient date and time.

[Example of functional configuration of energy calculation device]
An example of the functional configuration of the energy calculation device 100 shown in FIG. 1 will be described below. FIG. 3 is a functional block diagram showing the configuration of the energy calculation device according to this embodiment. As shown in FIG. 3, this energy calculation device 100 includes a communication section 110, an input section 120, a display section 130, a storage section 140, and a control section 150.

The communication unit 110 transmits and receives information to and from the controller 20 via the network 50. For example, the communication unit 110 is realized by a NIC (Network Interface Card) or the like.

The input unit 120 is an input device for inputting various data to the energy calculation device 100. The input unit 120 corresponds to a keyboard, a mouse, a touch panel, etc. For example, the user operates the input unit 120 to input a meter value (updated value), date and time (updated date and time), etc. into each input field of the input screen 60 shown in FIG.

The display unit 130 is a display device that displays information output from the control unit 150. The display unit 130 corresponds to an organic EL (Electro Luminescence) display, a liquid crystal display, a touch panel, or the like. For example, the display unit 130 displays the input screen 60 shown in FIG. 2.

The storage unit 160 is a storage device that stores various information, and is realized, for example, by a semiconductor memory element such as a RAM (Random Access Memory) or a flash memory, or a storage device such as a hard disk or an optical disk. . The storage unit 140 stores a measurement data table 141, calculation input value data 142, and calculation result data 143.

The measurement data table 141 is a table that holds data regarding meter values measured by the meter 10, date and time, and the like. FIG. 4 is a diagram showing an example of the data structure of the measurement data table. As shown in FIG. 4, this measurement data table 141 associates identification information for identifying the meter 10, the date and time when the meter value was measured, and the meter value.

The calculation input value data 142 holds input value data for performing energy calculation. For example, assume that the input value data for performing energy calculation is a meter value (energy consumption amount) that has increased over one month.

The calculation result data 143 holds data that is the result of energy calculation.

The control unit 150 executes various programs stored in a storage device inside the energy calculation device 100 by a processor such as a CPU (Central Processing Unit) or an MPU (Micro Processing Unit) using a RAM or the like as a work area. Realized. Further, the control unit 150 may be realized by an integrated circuit such as an ASIC (Application Specific Integrated Circuit) or an FPGA (Field Programmable Gate Array). The control unit 150 includes a scan processing unit 151, a reception unit 152, a calculation execution unit 153, and an output unit 154.

The scan processing section 151 receives measurement data from the controller 20 via the communication section 110. The scan processing unit 151 stores the measurement data in the measurement data table 141. When storing measurement data, the scan processing unit 151 stores the meter value of the measurement data in association with identification information. The scan processing unit 151 may request measurement data from the controller 20 and receive the measurement data every preset period.

The reception unit 152 displays an input screen on the display unit 130, receives meter values, date and time data input into the input fields of the input screen, and stores the received data in the measurement data table 141. An example of processing by the reception unit 152 will be described below.

Upon receiving an input request from the input unit 120 operated by the user, the reception unit 152 displays an input screen. For example, the input field on the input screen that is initially displayed will be blank. The user operates the input unit 120 and inputs the identification information of the corresponding meter 10 into the identification information input field on the input screen. In the following description, the identification information specified by the user will be referred to as "designated identification information."

The reception unit 152 compares the specified identification information with each piece of identification information in the measurement data table 141, and identifies the latest date and time that corresponds to the same identification information as the specified identification information. Further, the reception unit 152 specifies the meter value corresponding to the specified latest date and time. The reception unit 152 updates the input screen by setting the specified date and time in the previous date and time input field on the input screen, and setting the specified meter value as the previous value on the input screen.

The user operates the input unit 120 to input the confirmed meter value into the update value input column on the input screen, and inputs the date and time when the meter value was confirmed into the update date and time input column on the input screen. The reception unit 152 stores the meter value input in the update value input field and the date and time input in the update date and time input field in association with the identification information corresponding to the specified identification information in the measurement data table 141. do.

Note that the user may operate the input unit 120 to modify the date and time set in the previous date and time input field and the meter value set in the previous value input field on the input screen. When receiving a modification, the reception unit 152 modifies the corresponding data in the measurement data table 141. For example, the reception unit 152 updates the date and time corresponding to the same identification information as the designated identification information to the corrected date and time, and updates the meter value corresponding to the updated date and time to the corrected meter value.

The calculation execution unit 153 generates calculation input value data 142 based on the measurement data table 141 and stores it in the storage unit 140. The calculation execution unit 153 executes energy calculation based on the calculation input value data 142 and stores calculation result data, which is the calculation result, in the storage unit 140.

First, an example of a process in which the calculation execution unit 153 generates the calculation input value data 142 based on the measurement data table 141 will be described. The calculation execution unit 153 calculates a meter value per unit time in a period according to the energy calculation. In the following description, the period corresponding to the energy calculation is assumed to be one month as an example.

For example, the calculation execution unit 153 selects "identification information" and "month" to be calculated. As an example, the identification information of the calculation target is "M101", and the month of the calculation target is "March". The calculation execution unit 153 identifies, among the records in the measurement data table 141, records whose identification information is "M101" and whose date and time are in March. The calculation execution unit 153 calculates the meter value (hereinafter referred to as first meter value) corresponding to the oldest date and time (hereinafter referred to as first date and time) and the latest date and time (hereinafter referred to as second date and time) among the identified records. ) (hereinafter referred to as second meter value) is specified.

The calculation execution unit 153 calculates the meter value per unit time based on equation (1).

Meter value per unit time = (second meter value - first meter value) / (time from the first date and time to the second date and time)... (1)

The calculation execution unit 153 calculates the meter value per unit time corresponding to each piece of identification information for each month by repeatedly executing the above process while changing the identification information and month to be calculated. The calculation execution unit 153 may perform the above calculation by narrowing down the months to be calculated to a predetermined month (for example, the latest month). The meter value per unit time corresponding to each month's identification information calculated by the calculation execution unit 153 becomes data corresponding to the calculation input value data 142.

Next, an example of a process in which the calculation execution unit 153 executes an energy calculation based on the calculation input value data 142 will be described. The calculation execution unit 153 may use any known technique to perform the energy calculation.

For example, the calculation execution unit 153 determines, as the energy calculation result, a value obtained by adding a value obtained by multiplying the meter value per unit time for each identification information by a weight. Alternatively, the calculation execution unit 153 may use the ratio of the meter value per unit time to the load per unit time of the target device as the energy calculation result. The target device is a target device that is measured by a meter corresponding to the identification information. Further, it is assumed that the load per unit time of the target device is acquired from the outside. The calculation execution unit 153 may perform the energy calculation using other calculation methods.

Note that, when the data in the measurement data table 141 is updated, the calculation execution unit 153 may calculate the calculation result data 143 by executing the above process again.

The output unit 154 outputs the calculation result data 143 to the display unit 130 for display.

[An example of processing of the energy calculation device in this embodiment]
Next, an example of the energy calculation device 100 in this embodiment will be described. FIG. 5 is a flowchart showing the processing procedure of the energy calculation device. As shown in FIG. 5, the scan processing unit 151 of the energy calculation device 100 receives measurement data from the controller 20 and stores it in the measurement data table 141 (step S101).

When receiving the input request, the reception unit 152 of the energy calculation device 100 displays an input screen on the display unit 130 (step S102). The receiving unit 152 acquires the previous date and time and the previous value corresponding to the identification information input into the input field of the input screen from the measurement data table 141 and sets them on the input screen (step S103).

The reception unit 152 receives input of the update date and time and the update value from the input unit 120, and stores the input in the measurement data table 141 (step S104).

The calculation execution unit 153 of the energy calculation device 100 calculates calculation input value data 142 based on the measurement data table 141 (step S105). The calculation execution unit 153 executes energy calculation based on the calculation input value data 142 and generates calculation result data 143 (step S106).

The output unit 154 of the energy calculation device 100 outputs the calculation result data 143 to the display unit 130 for display (step S107).

[Effects in embodiment]
As described above, the energy calculation device 100 according to the present embodiment displays the input screen, receives meter value and date/time data from the user, and stores the data in the storage unit 140. Based on the data, the meter value per unit time is calculated for the period corresponding to the energy calculation, and the energy calculation is performed. Therefore, even if the meter value is not input by the user at a fixed date and time, energy calculation can be performed accurately.

The energy calculation device 100 displays the input screen and displays the previous date and time and the previous value based on the data of the measurement data table 141, and when it accepts corrections to the displayed previous date and time and the previous value. , updates the data stored in the measurement data table 141 to the corrected data. This allows data input in the past to be easily updated.

The energy calculation device 100 executes the energy calculation again when the data in the measurement data table 141 is updated to the corrected data. Thereby, it is possible to easily obtain an energy calculation result corresponding to the correction.

[Expansion of embodiment]
The processing of the energy calculation device 100 described above is an example, and the processing is not limited to the above processing. For example, the reception unit 152 may detect whether there is an error in the newly input meter value or date and time based on the meter value and date and time stored in the measurement data table 141.

For example, when an update date and time and an update value are input to the input screen 60, and the update date and time is earlier than the previous date and time, or when the update value is smaller than the previous value, the reception unit 152 receives a new input. Detect whether there is an error in meter value or date/time. When the reception unit 152 detects an error, it may highlight the input field containing the error. By having the reception unit 152 execute such processing, input errors in meter values and date and time can be reduced.

Although an example of the embodiment has been described above, these are merely examples, and the present embodiment is not limited to the above description. In addition to the aspects described in the disclosure section, the configuration and details of the embodiments can be implemented in other forms with various modifications and improvements based on the knowledge of those skilled in the art. Moreover, each embodiment can be implemented in any combination within the range not contradictory.

1 calculation system 10a, 10b, 10c meter 20a, 20b controller 30 other systems 50 network 100 energy calculation device 110 communication section 120 input section 130 display section 140 storage section 141 measurement data table 142 calculation input value data 143 calculation result data 150 control section 151 Scan processing section 152 Reception section 153 Arithmetic execution section 154 Output section

Claims (5)

a reception unit that stores the relationship between the meter value and date and time in a storage unit each time the input screen is displayed and the input of the meter value and date and time is accepted;
a calculation execution unit that calculates a meter value per unit time in a period corresponding to the energy calculation from the storage unit and executes the energy calculation based on the meter value per unit time;
An energy calculation device having The reception unit displays an input screen in which information on the meter value and the date and time stored in the storage unit is set, and when the correction regarding the meter value and date and time is accepted, the information on the meter value and the date and time stored in the storage unit is displayed. The energy calculation device according to claim 1, further comprising updating the meter value and the date and time to corrected information. The energy calculation device according to claim 2, wherein the calculation execution unit executes the energy calculation again when the meter value and date and time stored in the storage unit are updated. The reception unit further executes a process of detecting whether or not there is an error in the newly input meter value or date and time based on the plurality of meter values and date and time stored in the storage unit. The energy calculation device according to claim 1. Every time the input screen is displayed and input of meter value and date and time is accepted, the relationship between meter value and date and time is saved in the memory,
An energy calculation method comprising: calculating a meter value per unit time for a period corresponding to the energy calculation from the storage unit, and executing the energy calculation based on the meter value for the unit time.

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