JP2001084167A - Data reading method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To allow a CPU part to read recorded information of any data collecting device by only one program by separating the recorded information into measuring data and header information through the use of a conversion sheet and preparing a directory obtained by adding header information to a collected file. SOLUTION: An input device 406 sets the contents of the format of recorded information to a conversion sheet 200. Recorded information collected by a data collecting device 410 is read in a conversion module 100 through an external recording part 405. A recorded information separating part 201 separates it into measuring data 204 and header information 205 by referring to the sheet 200. A file conversion part 202 decomposes the data 204 into channel units by the sheet 200 and assigns a file name to each channel. A directory preparing part 203 collects files to a fixed unit by referring to the sheet 200 and adds information 205 to it to prepare a directory which can be read by a CPU 403.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to water treatment processes such as water purification treatment and sewage treatment, power generation processes such as hydroelectric power, thermal power generation, nuclear power generation, and various types of chemical processes. On how to read the data needed for

[0002]

2. Description of the Related Art FIG. 7 shows an example of a system configuration for monitoring or diagnosing / maintaining plant equipment. 4 in FIG.
Reference numeral 00 denotes a detection unit that extracts vibration and temperature of each equipment 411 such as a plant as an electric signal, and 401 denotes a sample / sample that periodically samples and holds the signal of the detection unit.
A hold (hereinafter referred to as S / H) section, 402 is an A / D section for performing analog / digital conversion (hereinafter referred to as A / D) of a signal of the S / H section, and 403 is necessary for data of the A / D section. A central processing unit that performs various numerical operations, monitors equipment, diagnoses and stores data, 406 is an input device for operating setting and display of data reading, and 407 is an output device for hardcopying diagnosis results and the like. The central control device 408 includes an S / H unit 401, an A / D unit 402, a central processing unit 403, an internal recording unit 404, and a data read processing unit 409. Since the internal recording unit 404 has a limited memory capacity, the external recording unit 40 is required before the storage capacity overflows.
5 Download the data.

[0003] Hereinafter, a nuclear power plant will be described as an example. The operation of the plant is centrally controlled by the central controller 408. The central controller 408 detects acceleration, rotation speed, vibration, and process data (temperature, voltage, current, power, etc.) of movable parts such as pumps, turbines, and valves in the detection unit 400.
, And periodically reads data through the S / H unit 401 and the A / D unit 402. The central processing unit 403
The data of the / D unit 402 is processed into an engineering value to monitor an abnormality during plant operation, and at the same time, the result is stored in the internal recording unit 4.
04.

[0004] Aging deterioration diagnosis and remaining life evaluation of valves and pumps installed in a plant are judged and estimated by modeling physical phenomena from enormous past data. Also, since the number of valves and pumps installed in plant equipment is huge,
It is not possible to read the measurement data of the detection unit 400 at a fixed cycle for all valves and pumps from the viewpoint of cost and installation space. Therefore, in general, measurement is performed at regular intervals for information of high importance leading to a serious accident.

[0005] For this reason, the reliability of the deterioration diagnosis and the remaining life evaluation is reduced only by the information during the operation of the actual plant. In order to compensate for this lack of information, information that the operator does not constantly monitor at the site during the periodic inspection is also recorded in the data collection device 410 (hereinafter, such information collected offline is referred to as recorded information). The recording information is temporarily recorded on a recording medium (a floppy disk, a magneto-optical disk, or the like), and is uploaded to the central processing unit 403 via the external recording unit 405 and the data reading processing unit 409. Diagnosis and remaining life evaluation are performed.

[0006] Recorded information recorded on a recording medium has a record as a basic unit, and a record is composed of a "header" and a "data".
It consists of. The header stores information unique to the system, such as the measurement conditions and the structure of the measurement data, and has a unique description method. On the other hand, the notation of measurement data has a common format such as IEEE, and the data size and data format are different. Further, the recorded information is stored in various data collection devices 41.
Since the data is collected from 0, the combination (format) of the header and data of the recording information is not unified as shown in FIGS. 8 and 9, for example.

In FIG. 8, a plurality of headers and channels are stored as a pair in one piece of recording information, and the contents of the header of the recording information are all the same.

In FIG. 9, one piece of recording information includes a header and data, the data is composed of a plurality of blocks, and the block is composed of a plurality of channels. The number of channels in each block is the same. The measurement data is recorded on each channel.

As described above, since the format of the recording information differs greatly depending on the data collection device 410, the central processing unit 408 includes a data reading processing unit 409 having a plurality of programs dedicated to each data collection device 410.
To convert the data into data that can be analyzed.

For example, FIG. 10 shows a conversion example of the record information shown in FIG. 8 (the recorded data collection device is (device A)). First, before reading the recording information 90 from the external recording unit 405, the input device 406 uses the data reading processing unit 40 so as to read using the program dedicated to the device A.
Give instructions to 9. The data reading processing unit 409 excludes the header information of the recording information 90 from the channels (1 to
Extract only n) and assign a file name for each channel. After that, the read processing unit 409 combines the files (1 to n) into one and creates a directory to which header information is added. As a result, one directory is created for one piece of recording information. Diagnosis is performed on a directory basis.

Next, an example of conversion of recording information shown in FIG. 9 is shown in FIG.
1 (the recorded data collection device is (device B)). First, before reading the recording information 90 from the external recording unit 405, the input device 406 gives an instruction to the data reading processing unit 409 to read using the program dedicated to the device B. The data read processing unit 409 separates the recording information 90 into header information and measurement data. Then, the data block 1 is extracted and decomposed into channels (1 to m), and a file name is assigned to each channel.
After that, the read processing unit 409 combines the files (1 to m) into one and creates a directory to which header information is added. Since the blocks (2 to n) perform the same processing, one directory is created for one block as a result. Diagnosis is performed on a directory basis. Note that the record information 90 of the other data collection device 410
Is read from the external recording unit 405, a dedicated program corresponding to the recording information of the device is prepared in the reading processing unit 409.

[0012]

The data reading processing unit 409 requires a program only for the type of the data collection device 410 to be used, which leads to an increase in software capacity. The target data for performing the aging diagnosis and the remaining life evaluation of the equipment is determined based on the experience and the past results, and the observation points are appropriately changed. Therefore, each time the number of data points and the number of channels are changed, the contents of the program of the data read processing unit 409 must be changed accordingly, and the processing becomes complicated.

An object of the present invention is to provide a reading method in which a central processing unit can read any record information of any data collection device with only one program without preparing a data reading processing unit having a plurality of programs. Is to do.

[0014]

SUMMARY OF THE INVENTION It is an object of the present invention to provide a method for recording data between an external recording section and a central processing section in a directory readable by the central processing section as described in the prior art. This is achieved by providing a new conversion module. Data conversion module, conversion sheet,
It comprises a recording information separation unit, a file conversion unit and a directory creation unit.

First, the data conversion module sets information for creating a directory in a conversion sheet. Thereafter, the recording information separation unit separates the recording information into measurement data and header information by using a conversion sheet. Next, the file conversion unit determines the channel capacity of the conversion sheet, decomposes the measurement data into channel units, and assigns a file name to each channel. Further, the directory creation unit creates a directory to which the header information is added by grouping the files into fixed units based on the contents of the conversion sheet.
If the data collection device changes or the content of the channel changes, the content of the conversion sheet may be changed. Further, if the created conversion sheet is stored in the internal recording unit, the same processing can be repeatedly performed any number of times, so that it is not necessary to prepare many reading programs.

As described above, it is possible to create a directory that can be read by the central processing unit using the conversion sheet, regardless of the record information collected by any data collection device.

[0017]

FIG. 1 is a detailed block diagram of a data conversion module 100 according to the present invention. FIG. 2 is a block diagram of the central control device of the present invention using the data conversion module 100. The other reference numerals are the same as those of the conventional example, and the description is omitted.

A portion enclosed by a dotted line in FIG. 1 is a data conversion module 100, which includes a conversion sheet 200, a recording information separation unit 201, a file conversion unit 202, and a directory creation unit 203.

The recording information collected by the data collection device 410 is recorded on a recording medium in a recording format as shown in FIGS. 8 and 9 and read into the conversion module 100 via the external recording unit 405. Prior to this, the contents of the format of the recording information read from the external recording unit 405 by the input device 406 are set in the conversion sheet 200. The recording information separation unit 201 separates measurement data 204 and header information 205 with reference to the conversion sheet 200. The file conversion unit 202 uses the conversion sheet 200 to execute the measurement data 2
04 is decomposed for each channel, and a file name is assigned to each channel. The directory creation unit 203 refers to the conversion sheet 200 to group the files into a certain unit,
A directory that can be read by the central processing unit 403 is created by adding the header information 205.

FIG. 3 is a flowchart showing the procedure of the process of the data conversion module 100.

First, it is determined S01 whether or not the recording information conversion sheet 200 read from the external recording unit 405 is stored in the internal recording unit 404. If it is stored, the conversion sheet 200 is read from the internal recording unit 404 at S02, and if not, the conversion sheet 200 is set by the input device 406 and edited at S03. Next, when reading the recording information from the external recording unit 405, the recording information separation unit 201 separates into the measurement data 204 and the header information 205 with reference to the contents of the conversion sheet 200 (S04). The file conversion section 202 refers to the contents of the conversion sheet 200, decomposes the measurement data 204 into channel units, and assigns a file name (S05). The directory creation unit 203 refers to the conversion sheet 200 to group the files into records or blocks, and then adds a header information 205 to create a directory (S06).

As a result, the recording information is stored in the external recording unit 405.
After that, the central processing unit 403 can perform facility monitoring, diagnosis, and maintenance of the plant for each directory created by the data conversion module 100. Note that the conversion sheet 200 created once is stored in the internal recording unit 404, so that the conversion sheet 200 corresponding to the data collection device 410 can be read out and the processing can be repeatedly performed.

FIG. 4 shows an example in which the recording information 90 of FIG. 8 is processed based on this embodiment. The conversion sheet 200 is
If it is stored in the internal recording unit, it is read from the internal recording unit.
Edit at 06. First, the recording information separating unit 201 reads the capacity of the header of the conversion sheet 200, the number of channels of one record, the number of data points of one channel, and the size of data. Next, the recording information separation unit 201 calculates the capacity of one channel and confirms that the capacity is the product (b * c) of the number of data points b and the data size c. Further, the recording information separation unit 201 recognizes that the header capacity is a and the capacity of one channel is (b * c), and separates the header information and the channel. Recognizing that they are the same, the separation process is repeated, and the process ends when the number of channels of one record has reached n. The file conversion unit 202 reads the channel decomposed by the recording information separation unit 201,
File names are assigned to n record channels. The directory creation unit (203) reads the number of channels in one block. At this time, since the number of channels in one block is zero, it can be recognized that there is no block, so one record (files 1 to n are grouped together). ) To add a header information (205) to create a directory.

FIG. 5 shows an example in which the recording information 90 of FIG. 9 is processed based on this embodiment. Since the channels are stored in the block, the item of the number of channels in one block is added to the conversion sheet 200. Conversion sheet 2
00 is read from the internal recording unit or edited by an input device as in FIG. The recording information separation unit 201 first reads the capacity of the header of the conversion sheet 200, the number of blocks in one record, the number of channels in one block, the number of data points in one channel, and the data size. Next, the recording information separation unit 201 recognizes that the header information is a and separates it into header information 205 and measurement data 204.
Further, the capacity of one block of the measurement data 204 is calculated. Since the number of channels in one block of the conversion sheet 200 is m, the number of data points in one channel is b, and the data size is c, it is recognized that the capacity of one block is (m * b * c). The measurement data is divided into blocks for each record, and the processing is performed up to the number n of blocks in one record. The file converter 202 converts the block (1
To n) and calculate the capacity for one channel. 1
Since the number of data points of one channel of the conversion sheet 200 is b and the data size is c, the channel capacity is recognized as the product (b * c) of these, and the block is divided for each channel. , Up to the number m of channels in one block. Since there are n blocks, each block is decomposed for each channel (1 to m). Finally, the file conversion unit 202 assigns a file name (1 to m) to each of the separated channels. The directory creation unit 203 can read the file of the file conversion unit 202 and recognize the existence of the block from the item of the conversion sheet 200.
A directory is created by adding the header information 205 to the "m".

The directory conversion need not be performed in units of one record or one block, but can be realized by dividing the data into predetermined fixed units.

As described above, according to the present embodiment, there is no need to prepare a dedicated program for the data collection device, and the recording information can be created in a fixed unit directory by using the conversion sheet. it can.

The conversion sheet 200 shown in FIG.
This is an example in which an item for converting the signal of the detection unit 400 into a physical quantity is added in addition to the format contents of FIG. Detector 20 in FIG.
The signal of 0 is a value obtained by converting a physical quantity into an electric signal, and the numerical value handled by the central processing unit 403 is a physical quantity. Therefore,
In the data conversion module 100, it is necessary to convert the signal of the detection unit 400 into a physical quantity. A in conversion sheet 200
A bit number, a voltage range, a reference value, a calibration value, a unit of data, and a data type such as single precision or double precision of the / D unit 402 are given, and converted into a physical quantity that the central processing unit 403 can handle. Thus, the necessary information is stored in the conversion sheet 2
00 is added as appropriate.

According to the present embodiment, the conversion sheet is created so that the data collected by any data collection device is converted into data that can be analyzed by the central control device when the data is read from the external recording unit. can do.

[0029]

The conversion sheet is edited from the input device.
The recording information is separated into header information and measurement data by the conversion sheet. The measurement data is decomposed on a channel basis based on the conversion sheet, a file name is assigned to each channel, and the measurement data is compiled into a fixed unit and created in a directory to which header information is added. As described above, according to the present embodiment, by using the conversion sheet, the recording information can be converted into data that can be analyzed by the central control device without preparing a dedicated program for each of various data collection devices. Can be.

[Brief description of the drawings]

FIG. 1 is a block diagram of a conversion sheet module according to the present invention.

FIG. 2 is a block diagram of a central control device of the present invention.

FIG. 3 is a flowchart of a processing procedure of a conversion sheet module according to the present invention.

FIG. 4 is a diagram showing an example in which the recording information of FIG. 7 is applied to the present invention.

FIG. 5 is a diagram showing an example in which the recording information of FIG. 8 is applied to the present invention.

FIG. 6 is a diagram showing an example of a conversion sheet.

FIG. 7 is a block diagram of a conventional central control device.

FIG. 8 is a diagram showing a configuration example (1) of recording information.

FIG. 9 is a diagram showing a configuration example (2) of recording information.

FIG. 10 is a diagram showing an example in which the recording information of FIG. 7 is read by a conventional reading processing unit.

FIG. 11 is a diagram showing an example in which the recording information of FIG. 8 is read by a conventional reading processing unit.

[Explanation of symbols]

100: Data conversion module, 200: Conversion sheet,
201: record information separation unit, 202: file conversion unit, 2
03: directory creation unit, 204: measurement data, 20
5 header information, 400 detection unit, 401 sample /
Hold unit, 402 ... Analog / digital unit, 403 ...
Central processing unit, 404: Internal recording unit, 405: External recording unit, 406: Input device, 407: Output device, 408: Central control device, 409: Data reading module, 41
0: data collection device, 411: each equipment of the plant,
90 ... record information.

Continuing on the front page (72) Inventor Hiroshi Furuuchi 3-2-1 Sachimachi, Hitachi City, Ibaraki Prefecture Within Hitachi Engineering Co., Ltd. (72) Inventor Fuji Akira 3-1-1 Sachimachi, Hitachi City, Ibaraki Stock F-term (reference) in Hitachi, Ltd. Hitachi Works 5B060 AA02 AA06 AA12 AC11 DA09 5B065 BA01 BA03 CE04 ZA16 5B082 AA07 BA13 CA01 EA01 EA09 GA20

Claims (1)

[Claims] 1. A method of converting data of recording information recorded in an external recording unit and reading data in a central processing unit, wherein a data conversion module provided between the external recording unit and the central processing unit includes a conversion sheet. The recording information is separated into measurement data and header information using the measurement data, and the measurement data is decomposed into channel units by judging the channel capacity of the conversion sheet, a file name is assigned, and the header information is put into a file compiled into a certain unit. A data reading method, wherein an added directory is created and read by a central processing unit.