JP2015141087A - Management device, management method, and program - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a management device capable of storing a large amount of measurement data efficiently.SOLUTION: Provided is a management device 1 for receiving, from a plurality of measurement devices, data acquired from time to time by the measurement devices, the management device 1 having: a write-in unit 102 for classifying the received data into a prescribed number of data and writing the classified data into a storage unit; a write-out unit 104 for writing the data written into the storage unit out to different files corresponding to the classification; and an alteration unit 106 for altering the sequence of the data written out to the files so that the data received from one of the measurement devices are arranged contiguously.

Description

  The present invention relates to a management apparatus, a management method, and a program.

  There is a management system that collects data of measuring instruments installed in various places through a network. For example, an electric power company uses a large-scale management system in order to periodically collect measured values of power meters installed in many homes or offices. Since such a management system processes a large amount of data at a constant cycle, it requires a high calculation capacity.

  Patent Document 1 discloses an apparatus for editing data so that a large amount of data can be efficiently stored in a recording medium and read out.

JP-A-63-83820

  In the management system described above, the collected data is generally stored in a file provided in a large-capacity auxiliary storage device (for example, a hard disk). However, in the conventional technique, for example, when 10 million pieces of measurement data are handled every hour, there is a problem that 10 million file writing occurs and the processing is not completed within one hour. In Patent Document 1, it is not assumed that such a large amount of file writing is performed, and the above problem cannot be solved.

  The present invention has been made in view of such a problem, and an object thereof is to enable a large amount of measurement data to be stored efficiently.

In order to solve the above-described problems and achieve the object, a management device according to an embodiment of the present invention is:
A management device that receives data acquired from time to time in a plurality of measurement devices,
A writing unit that classifies the received data into a predetermined number and writes the data to the storage unit;
A writing unit for writing the data written in the storage unit to a different file according to the classification;
A changing unit that changes the order of the data written to the file so that the data received from one of the measuring devices is arranged adjacently;
Have

In addition, the management method in one embodiment of the present invention is:
A management method performed by a computer,
A receiving step of receiving data acquired at any time in the measuring device from a plurality of measuring devices;
A writing step of classifying the received data into a predetermined number and writing it in the storage unit;
A writing step of writing the data written in the storage unit to a different file according to the classification;
A change step of changing the order of the data written to the file so that the data received from one of the measuring devices is arranged adjacent to the file;
Have

Moreover, the program in one embodiment of the present invention is:
A program for causing a computer to execute a management method, the management method comprising:
A receiving step of receiving data acquired at any time in the measuring device from a plurality of measuring devices;
A writing step of classifying the received data into a predetermined number and writing it in the storage unit;
A writing step of writing the data written in the storage unit to a different file according to the classification;
A change step of changing the order of the data written to the file so that the data received from one of the measuring devices is arranged adjacent to the file;
Have

  According to the present invention, a large amount of measurement data can be efficiently stored.

The figure showing the example of the system containing the management apparatus in one Embodiment of this invention. The figure explaining the outline | summary of the management apparatus in one Embodiment of this invention. The hardware block diagram of the management apparatus in one Embodiment of this invention. The functional block diagram of the management apparatus in one Embodiment of this invention. The figure which shows the structural example of measurement data. The figure showing the example of the memory structure of measurement data. The figure showing the structure of the file which stores measurement data. The figure explaining the write-out process in one Embodiment of this invention. The figure explaining the change process in one Embodiment of this invention. The figure explaining the read-out process in one Embodiment of this invention. The flowchart showing the reception process and writing process in one Embodiment of this invention. The flowchart showing the writing process in one Embodiment of this invention. The flowchart showing the change process in one Embodiment of this invention. The flowchart showing the reading process in one Embodiment of this invention. The sequence diagram showing the operation example of the management apparatus in one Embodiment of this invention.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

1. 1. System overview 2. Hardware configuration Functional configuration Example of operation

≪ １． System overview ≫
FIG. 1 is a diagram illustrating an example of a management system including a management apparatus 1 according to an embodiment of the present invention. The management system shown in FIG. 1 shows an example of an EMS (Energy Management System) that manages and controls energy used in homes and offices. The management system shown in FIG. 1 includes a management device 1, a collection device 2, a concentrator 3, and a measurement device 4, and can collect data measured at home or business.

  The management device 1 and the collection device 2 are computers such as a PC (Personal Computer) or a server, for example, and are connected by a network 5 such as a LAN (Local Area Network). The collection device 2 and the concentrator 3 are connected via a network 6 such as the Internet or a dedicated line. The concentrator 3 and the measuring device 4 are connected via a network 7 such as a wireless LAN, Bluetooth (registered trademark), ZigBee (registered trademark), or the like.

  The measuring device 4 is installed in a home or business, and can acquire an active power amount, an average kW value, a voltage, an integrated kWh value for every predetermined time, and the like. The measuring device 4 transmits the acquired measurement data to the concentrator 3 through the network 7. The measurement device 4 can transmit measurement data regularly (for example, every hour) or irregularly.

  The concentrator 3 is installed for each area and receives measurement data from a plurality of measurement devices 4. The concentrator 3 transmits the received measurement data to the collection device 2 through the network 6.

  The collection device 2 receives measurement data from the plurality of concentrators 3. The collection device 2 transmits the received measurement data to the management device 1 through the network 5.

  The management device 1 receives the measurement data collected by the collection device 2 and writes the measurement data to a file. For example, when 10 million measurement devices 4 are installed and each transmits measurement data once per hour, the management device 1 writes 10 million measurement data per hour to a file. There is a need.

  FIG. 2 shows a process in which the management apparatus 1 according to an embodiment of the present invention efficiently stores a large amount of measurement data in a file and a process in which the contents of the file are rearranged. Thereby, the management apparatus 1 can read a lot of measurement data efficiently. In the following example, description will be made assuming that measurement data for 24 hours is stored in one file.

  First, the management apparatus 1 classifies measurement data received from the collection apparatus 2 as needed using the file number of a file stored later, and writes it into the memory (measurement data writing process). Here, the management apparatus 1 classifies the measurement data by using the number of measurement data (for example, 10000) stored in one file per unit time. As will be described in detail later, the management device 1 uses the value of the quotient obtained by dividing the identification number (for example, 0 to 9999999) included in the measurement data by the number of storages per hour (for example, 10000), Specify the file number of the file to store the measurement data.

  Next, the management apparatus 1 writes the measurement data classified and written on the memory at regular intervals to a file (file writing process). The file is divided into 24 blocks corresponding to the measurement data acquisition time, and a predetermined number of measurement data of the measurement device 4 is stored in each block.

  The management device 1 determines the storage position of the measurement data on the file by using the measurement data acquisition time stored in the memory and the remainder value obtained by dividing the measurement data identification number by the number of storages. Identify. Among the files shown in FIG. 2, files such as “File2_2012_1_12” and “File999_2012_1_12” are files written by the file writing process.

  Moreover, the management apparatus 1 changes the arrangement order of the measurement data written in the file at regular intervals (for example, a longer cycle than the file writing process) (file changing process). As will be described in detail later, the management device 1 rearranges the measurement data that is classified and recorded in blocks for each acquisition time into blocks for each measurement device 4. Each block stores measurement values in order of acquisition time. Among the files shown in FIG. 2, files such as “XFile0_2012_1_10” and “XFile1_2012_1_10” are files written by the file writing process.

  Moreover, the management apparatus 1 reads the measurement data stored in the file for each measurement apparatus 4 in response to an instruction from the user or a request from an external system (measurement data reading process). The management device 1 receives the identification number of the measurement device 4 and the date and time of the measurement data, and specifies the file in which the measurement data is stored and the position in the file. Since the measurement data is recorded in units of blocks for each measurement device 4 by the file change process described above, the management device 1 can efficiently read the measurement data.

  Hereinafter, elements constituting the management device 1 according to an embodiment of the present invention will be described in detail. In addition, this invention is not restricted to the example of EMS mentioned above, It can apply to the arbitrary systems which collect and store several measurement data with a fixed period.

≪ 2. Hardware configuration ≫
A hardware configuration example of the management apparatus 1 according to an embodiment of the present invention will be described with reference to FIG. The management device 1 includes a CPU 11, a ROM 12, a RAM 13, an HDD (Hard Disk Drive) / SSD (Solid State Drive) 14, and a NIC (Network Interface Card) 15.

  The CPU 11 executes a program that controls the operation of the management apparatus 1. The ROM 12 stores a system program executed by the CPU 11. The RAM 13 constitutes a work area for the CPU 11. The RAM 13 is also used as an area for temporarily storing measurement data. The HDD / SSD 14 stores programs and data such as an OS and applications executed by the CPU 11 in addition to files for storing measurement data. The NIC 15 includes a wired communication interface and its control device, and is used to communicate with the collection device 2. The bus 16 connects the above-described devices constituting the management device 1 to each other and exchanges data.

  The management apparatus 1 may use a storage area on the network instead of storing measurement data, applications, and the like in the HDD / SSD 14. Further, the management device 1 may store the file itself for storing measurement data in the RAM 13.

≪ 3. Functional configuration ≫
Next, the functional configuration of the management apparatus 1 according to an embodiment of the present invention will be described with reference to FIG. FIG. 4 shows elements that are particularly relevant to the description of the present embodiment, among various elements included in the management apparatus 1. In the following example, the management apparatus 1 receives 10 million pieces of measurement data every hour, and classifies and records each piece of measurement data into 1000 files. That is, each file stores 10,000 pieces of measurement data per hour. Each file stores measurement data for a total of 24 hours.

  The management device 1 includes a receiving unit 101, a writing unit 102, a temporary storage unit 103, a writing unit 104, a storage unit 105, a changing unit 106, and a reading unit 107.

  The receiving unit 101 is mainly realized by the processing of the CPU 11 and the NIC 15 illustrated in FIG. 3, and receives measurement data acquired by the measurement device 4 from the collection device 2. The receiving unit 101 passes the received measurement data to the writing unit 102.

  In addition, the receiving part 101 can receive the measurement data which has the structure shown by FIG. 5, for example. The measurement data shown in FIG. 5 includes an identification number, a date and time, and a measurement value. The identification number is a number or identifier corresponding to the measuring device 4. The date and time represents the date and time when the measurement device 4 acquired measurement data. The measurement value represents a value acquired by the measurement device 4. In the example of FIG. 5, the identification number is in the range of 0-9999999 and the measurement value is in the range of 0-999. However, the present invention is not limited to this example, and an arbitrary number of identification numbers and measurement values may be used. .

  The writing unit 102 is realized by the processing of the CPU 11 illustrated in FIG. 3, and writes the measurement data received from the receiving unit 101 to the temporary storage unit 103. FIG. 6 shows a data structure for the writing unit 102 to store measurement data in the temporary storage unit 103. The writing unit 102 classifies the measurement data into file numbers (“File0” to “File999”) of files to be stored later, and writes them into the temporary storage unit 103. For this purpose, the writing unit 102 divides the identification number included in the measurement data by “10000”, which is the number of data stored in one file per unit time (here, one hour). The obtained quotient value is used as the file number of the file to which the measurement data is written.

  As shown in FIG. 6, the structure 61 holds a pointer (address) to the structure 62 that manages measurement data for each date (year / month / day) for each file number. The structure 62 includes a pointer to the file of the next day, a data date, and a time data link (pointer). The time data link refers to a structure 63 that stores actual measurement data. The structure 63 includes a pointer to the next time data, the time of measurement data to be stored (here, 1-24), and the above-described measurement data block 64 having the stored number “10000”. The measurement data block 64 further includes a flag indicating that the measurement data is stored and a measurement value.

  The writing unit 102 refers to the date among the date and time of the measurement data received from the reception unit 101, and specifies the structure 62 (to store the measurement data. Next, the writing unit 102 receives the reception unit 101. The structure 63 to which the measurement data is to be written is specified with reference to the time (here, 1-24) of the date and time of the measurement data received from 101. Next, the writing unit 102 identifies the measurement data. Using the remainder value obtained by dividing the number by the above-mentioned storage number “10000”, the measurement value writing position in the measurement data block of the structure 63 is specified. The measured value is written in the specified storage position, and the corresponding flag is enabled (for example, 0 is set to 1).

  Note that the writing unit 102 may prepare the structure 61 in advance before processing the measurement data. In addition, after receiving the measurement data, the writing unit 102 generates these structures 62 and 63 on the memory when the structures 62 and 63 corresponding to the date and time of the measurement data do not exist on the memory. Also good.

  The temporary storage unit 103 is realized by the RAM 13 shown in FIG. 3, and stores the data structure exemplified in FIG.

  The writing unit 104 is realized mainly by the processing of the CPU 11 shown in FIG. 3, reads a file prepared in advance in the storage unit 105, and uses the measurement value of the measurement data of the corresponding date and time read from the temporary storage unit 103. After overwriting, write the contents to a file. The writing unit 104 can execute the file writing process described above at regular intervals (for example, every hour).

  FIG. 7 shows an example of the structure of the file 70 in which the writing unit 104 writes measurement values. As illustrated in FIG. 7, the file 70 has a file name (for example, “File1_2012_1_13”) including a file number and a date, and is classified by time (1-24) and flags and measurement values. 10,000 pairs are stored.

  Note that the writing unit 104 may read only the measurement values for which the flag is valid among the measurement data stored in the temporary storage unit 103.

  FIG. 8 is a diagram for explaining the processing of the writing unit 104. Here, the writing unit 104 writes the file number “File1” and the date “2012/1/13”. FIG. 8 shows an example in which the writing unit 104 writes measurement data at 2 o'clock and 3 o'clock. First, the writing unit 104 reads an area for storing measurement data of “2 o'clock” in the file “File1_2012_1_13” stored in the storage unit 105 (1). Next, the writing unit 104 refers to the time data block of the structure 63 storing the 2 o'clock measurement data stored in the temporary storage unit 103, and uses the measurement value whose flag is “1”. The measured value read from the file is overwritten (2). Then, the writing unit 104 writes the overwritten data into the read area of the file (3). Similarly, the writing unit 104 processes measurement data at “3 o'clock” (4) to (6). The writing unit 104 performs the same process for all times (here, 1 to 24).

  The storage unit 105 is mainly realized by the HDD / SSD 14 illustrated in FIG. 3, and stores a file illustrated in FIG. 7 and a file changed by the changing unit 106 described later.

  The changing unit 106 is mainly realized by the processing of the CPU 11 shown in FIG. 3, changes the order of the flag and measurement value pairs in the file written by the writing unit 104, and changes the storage unit 105. Export to file. Specifically, as shown in FIG. 9, the changing unit 106 changes the order so that flags and measurement values for the same measuring device 4 are arranged adjacent to each other, and creates a new file 90. Export to The changing unit 106 adds “X” to the head of the file name of the file 70 in the new file 90 and writes the new file 90 in the file 90 using a file name such as “XFile1_2012_1_13”.

  The advantage of the changing process by the changing unit 106 will be described with reference to FIG. FIG. 10A shows processing when reading measurement values for 24 hours of a certain measuring device 4 from a file 90 subjected to change processing by the changing unit 106. FIG. 10B shows the process when the measurement values for 24 hours are similarly read from the file 70 that is not changed by the changing unit 106. As shown in FIG. 10 (B), in the file 70 before conversion, measurement values are scattered in 24 blocks. Therefore, the file needs to be read 24 times, but as shown in FIG. 10 (A). In addition, the converted file 90 needs only one file reference. This advantage is particularly effective when referring to a large number of calculated values at once. For example, when referring to the measurement values for 30 days, in the case of the file 70, 30 files × 24 times = 720 times of file reading occurs, whereas in the case of the file 90, 30 files × 1. Times = 30 times. As described above, the processing by the changing unit 106 can significantly reduce the processing time related to file reading.

  The reading unit 107 is mainly realized by the processing of the CPU 11 illustrated in FIG. 3, and reads measurement data stored in a file for each measurement device 4 in response to an instruction from a user or a request from an external system. . Specifically, the reading unit 107 receives an identification number and a period (date and time) of the measuring device 4 to be read from a user or the like. The reading unit 107 specifies a file number by a quotient obtained by dividing the designated identification number by the number of storages described above. Further, the reading unit 107 specifies the date corresponding to the designated period. Thereby, the reading unit 107 can specify the file name of the file 90 to be read. Next, the reading unit 107 obtains the data of the time corresponding to the specified period from the position indicated by the value of the remainder obtained by dividing the specified identification number in the specified file 90 by the number of storages described above. Read. FIG. 10A shows an example of reading a measurement value whose file number is “File1” and whose period is “2012/1/13 1: 00-24: 00”.

<< 4. Example of operation ≫
Next, a processing flow of the management apparatus 1 and an operation example of the management apparatus 1 according to an embodiment of the present invention will be described with reference to FIGS.

  FIG. 11 is a flowchart showing a processing flow of the receiving unit 101 and the writing unit 102 of the management apparatus 1 according to an embodiment of the present invention.

  First, the receiving unit 101 receives measurement data acquired by the measurement device 4 from the collection device 2 (step S101). Next, the writing unit 102 divides the identification number included in the measurement data by “10000”, which is the number of data stored in one file per unit time (here, 1 hour). The value is set as a file number for writing measurement data (step S102). At the same time, the writing unit 102 sets the remainder value obtained by dividing the identification number by the number of storages described above as the writing position in the measurement data block (see the structure 63 in FIG. 6) in which the measurement data is written. .

  Next, the writing unit 102 refers to the date and time (year / month / day and time) of the measurement data, and searches for a writing area (structure 63 in FIG. 6) in the temporary storage unit 103 in which the measurement data is written. (Step S103). In step S103, when the corresponding writing area exists in the temporary storage unit 103 (Yes in step S104), the writing unit 102 writes the measurement value of the measurement data in the measurement position calculated in step S102. (Step S105). Then, the writing unit 102 validates the flag corresponding to the written measurement value (step S106).

  On the other hand, if there is no corresponding writing area in the temporary storage unit 103 in step S103 (No in step S104), the writing unit 102 creates a writing area (step S107). Thereafter, steps S105 and S106 are executed.

  FIG. 12 is a flowchart showing a process flow of the writing unit 104 of the management apparatus 1 according to the embodiment of the present invention.

  The writing unit 104 first acquires the current date and time (step S201). Next, when a predetermined time has elapsed from the date and time when the writing unit 104 performed the writing process to the previous file (Yes in step S202), the predetermined date written in the storage unit 105 A file (for example, the current day or the previous day) is read (step S203). On the other hand, when the fixed time has not elapsed (No in step S202), the process is terminated.

  Next, the writing unit 104 reads the measurement data corresponding to the file number and date of the read file from the temporary storage unit 103, and overwrites the data read in step S203 with the measurement data (step S204). ). Then, the writing unit 104 writes the overwritten data in a file in the storage unit 105 (step S205).

  For example, the writing unit 104 can repeatedly execute the processing shown in FIG. 12 every hour for all files having the date of the day.

  FIG. 13 is a flowchart showing a process flow of the changing unit 106 of the management apparatus 1 according to the embodiment of the present invention.

  The changing unit 106 first acquires the current date and time (step S301). Next, when a predetermined time has elapsed from the date and time when the change unit 106 performed the previous change process (Yes in step S302), the file written in the storage unit 105 is read (step S303). Here, the changing unit 106 reads the file 70 written by the writing unit 104. On the other hand, when the predetermined time has not elapsed (No in step S302), the process is terminated.

  Next, the changing unit 106 changes the order of measurement values so that flags and measurement values for the same measurement device 4 are stored together as one block (step S304). Then, the change unit 106 writes the measurement data whose order has been changed to a new file in the storage unit 105 (step S305).

  For example, the changing unit 106 can repeatedly execute the process shown in FIG. 13 for every file having the date of the day (or the day before), every day.

  FIG. 14 is a flowchart showing a process flow of the reading unit 107 of the management apparatus 1 according to the embodiment of the present invention.

  The reading unit 107 receives an identification number and a period (date and time) of the measuring device 4 to be read from the user or the like (step S401). Next, the reading unit 107 specifies the file number by the quotient obtained by dividing the specified identification number by the number of stored items, and specifies the file name of the file to be read using the file number and the period (date and time) (Step S107). S402). At the same time, the reading unit 107 specifies the storage position of the flag and measurement value of the specified measurement device 4 in the file by the remainder obtained by dividing the specified identification number by the number of storages.

  Next, the reading unit 107 reads the measurement value for the specified period from the position specified in step S402 among the files having the file name specified in step S402 (step S403). Then, when the measurement values are read from all the files within the designated period (Yes in step S404), the process ends. Otherwise, the process returns to step S403, and the measurement values for the specified period are read from the remaining files.

  FIG. 15 is a sequence diagram illustrating an operation example of the management apparatus 1 according to the embodiment of the present invention. The management apparatus 1 in the present embodiment receives 10 million pieces of measurement data every hour, and classifies and records each piece of measurement data into 1000 files. That is, each file stores 10,000 pieces of measurement data per hour. Each file stores measurement data for a total of 24 hours.

First, the receiving unit 101 receives measurement data acquired by the measurement device 4 from the collection device 2 (step S501). Here, it is assumed that the receiving unit 101 has received measurement data including the following information. An example of the configuration of the measurement data is as shown in FIG.
-Identification number: 15001
-Date and time: 2012/1/13 2:00
-Measured value: 150
The receiving unit 101 passes the received measurement data to the writing unit 102 (step S502).

  Next, the writing unit 102 divides the identification number “15001” included in the measurement data by “10000”, which is the number of storages per hour stored in one file, to obtain the quotient “1” and the remainder. “1” is calculated (step S503). Thereby, the writing unit 102 can calculate the file number “1” of the file to which the measurement data is written and the writing position “1” of the measurement value.

  Next, the writing unit 102 refers to the data structure of the temporary storage unit 103 (FIG. 6), and reads the structure 62 corresponding to the file number “1” whose data date is “2012/1/13”. Search is performed, and further, the structure 63 whose time is “2” is searched (step S504). Then, the writing unit 102 writes the measurement value “150” in the region located at the “1” -th position from the head (“0” -th) in the measurement data block of the specified structure 63 (step S505). .

  Thereafter, similarly to steps S501 to S505 described above, measurement data having another identification number is received and written in the corresponding writing area (steps S506 to S510).

  The writing unit 104 detects that one hour has passed since the writing process executed last time, and reads a file containing the current date in the file name among the files stored in the storage unit 105 (step S511). . Here, it is assumed that the writing unit 104 reads the file “File1_2012_1_13”. Next, the writing unit 104 reads the measurement data corresponding to the file number “1” and the date “2012/1/13” of the read file from the temporary storage unit 103, and the measurement data is read in step S511. The data read out at step S513 is overwritten (step S513). Then, the writing unit 104 writes the overwritten data in a file in the storage unit 105 (step S514). The writing unit 104 executes the processing of steps S511-S514 for all file numbers.

  The change unit 106 detects that one day has passed since the change process executed last time, and reads a file that includes today's date in the file name among the files stored in the storage unit 105 (step S515). Next, the change unit 106 changes the arrangement order of the measurement values so that the measurement values acquired by the same measurement device 4 are recorded together in the file 70 written by the writing unit 104 (step S1). S516). The procedure for changing the arrangement order is as described with reference to FIG. The changing unit 106 writes the measurement data whose order has been changed to a new file in the storage unit 105 (step S517).

Thereafter, the reading unit 107 receives the identification number “15001” of the measurement device 4 to be read and the period “2012/1 / 13-2012 / 2/12” from the user or the like (step S518). The reading unit 107 divides the specified identification number “15001” by the storage number “10000”, specifies the file number “1” by the quotient “1”, and specifies the position of the measurement value by the remainder “1”. (Step S519). That is, the reading unit 107 specifies the following file.
-"XFile1_2012_1_13", "XFile1_2012_1_14", ..., "XFile1_2012_2_12"
Next, the reading unit 107 reads the measurement values for 24 hours of the “1” -th measurement device included in each file (step S520).

  With the above processing, the management apparatus 1 according to the present embodiment can efficiently write these measurement data to a file even when a huge amount of measurement data is received within a predetermined time. . In addition, the management device 1 can efficiently read a large amount of measurement values written in a file.

  Note that the number of files for writing measurement data and the number of measurement devices in which measurement data is stored in one file used in the above embodiment can be arbitrarily determined. In the above-described embodiment, an example in which a different file is generated every day is used. However, a different file may be generated every arbitrary time (for example, half day, two days, etc.).

DESCRIPTION OF SYMBOLS 1 Management apparatus 101 Receiving part 102 Writing part 103 Temporary storage part 104 Writing part 105 Storage part 106 Changing part 107 Reading part

Claims (8)

A management device that receives data acquired from time to time in a plurality of measurement devices,
A writing unit that classifies the received data into a predetermined number and writes the data to the storage unit;
A writing unit for writing the data written in the storage unit to a different file according to the classification;
A changing unit that changes the order of the data written to the file so that the data received from one of the measuring devices is arranged adjacently;
A management device. The data includes an identification number assigned to the measuring device,
The writing unit classifies the data using a quotient value obtained by dividing the identification number by the number of data stored in the file per unit time.
The management apparatus according to claim 1. The data includes a measurement value acquired by the measurement device,
The writing unit writes the measurement value acquired by the measuring device to which the identification number is assigned, at a position indicated by a remainder value obtained by dividing the identification number by the stored number in the file.
The management device according to claim 2. Identifying the file using the value of the quotient obtained by dividing the specified identification number by the stored number, and further specifying the position of the remainder obtained by dividing the specified identification number by the stored number The management apparatus according to claim 3, further comprising: a reading unit that reads data for a predetermined period. The writing unit further classifies the received data into the data acquisition time and writes the data to the storage unit,
The writing unit writes the data written in the storage unit to the file at each acquisition time;
The management apparatus as described in any one of Claims 1 thru | or 4. The measuring device is a wattmeter;
The management device receives the data from a collection device that collects data acquired by the plurality of power meters;
The management apparatus as described in any one of Claims 1 thru | or 5. A management method performed by a computer,
A receiving step of receiving data acquired at any time in the measuring device from a plurality of measuring devices;
A writing step of classifying the received data into a predetermined number and writing it in the storage unit;
A writing step of writing the data written in the storage unit to a different file according to the classification;
A change step of changing the order of the data written to the file so that the data received from one of the measuring devices is arranged adjacent to the file;
A management method. A program for causing a computer to execute a management method, the management method comprising:
A receiving step of receiving data acquired at any time in the measuring device from a plurality of measuring devices;
A writing step of classifying the received data into a predetermined number and writing it in the storage unit;
A writing step of writing the data written in the storage unit to a different file according to the classification;
A change step of changing the order of the data written to the file so that the data received from one of the measuring devices is arranged adjacent to the file;
Having a program.

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