JP2577381B2 - Plant data collection and display device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] (Field of Industrial Application) The present invention relates to a database that stores various types of information about plant data to be collected, such as input point information, unit conversion formulas, and limit values. And save the plant data collected from the plant together with the collection date and time in a file,
The present invention relates to a plant data collection and display device for displaying necessary plant data on a display device when necessary.

(Prior art) For example, in an industrial plant such as a thermal power plant, in addition to monitoring and controlling the plant, various data in each part of the plant are collected in order to obtain information for determining the high-efficiency operation and facility operation management of the plant. Saved.

In this way, the number of input points of plant data collected and stored from the plant is several thousand, and accumulating all information on those plant data results in a high load, which affects the original plant monitoring control. Collects and stores the sampling date, identification information, and data value of those plant data as plant data.

In addition, various information on each plant data, for example, installation position, sensor type, input range, unit, etc., are stored in separate databases.

When accessing desired plant data, an appropriate display is performed by referring to the stored contents of the database.

By the way, during the period when the plant is operating, the type of the sensor that inputs the plant data changes,
The input point may be changed, and the content of the database storing various information on the plant data is changed in accordance with the change.

(Problems to be solved by the invention) In this way, the contents of the database are updated, corrected,
If a change such as deletion is made, the plant data stored before the change cannot be properly accessed, and cannot be reproduced and displayed correctly.

For example, when the sensor used for a certain input point is changed to a sensor having a different range, the range of the plant data thereafter differs from the range of the plant data obtained before the change. Therefore, when the plant data obtained before the change of the sensor is accessed, the plant data is displayed in the range after the change of the sensor, so that the displayed content is strange.

Therefore, an object of the present invention is to provide a plant data collection and display device that can appropriately display plant data even when the contents of a database are changed.

[Structure of the Invention] (Means for Solving the Problems) The present invention refers to a database that stores various information on plant data to be collected, such as input point information, unit conversion formulas, limit values, and the like. Save the plant data collected from the plant together with the collection date and time in a file,
In a plant data collection and display device that displays necessary plant data on a display device when necessary, a plant data collection unit that collects plant data based on the database and saves the collected data with a collection date and time in a collected data storage file, Database initial information storage means for storing initial information of the database, database change means for changing the database based on an instruction from an operator console, and storing the changed contents in a database change record storage file together with the change date and time; When a display is requested from the console with the date and time specified, one or more changes in which the change date and time up to the specified date and time are stored are read from the database change record storage file, and the read one is read. Within the above changes And a reference database representing the database at the specified date and time based on the initial information of the database stored in the database initial information storage means, and referring to the reference database to specify the specified date and time. And a display output means for reading out the plant data of the collected data storage file, forming display information of the read out plant data, and displaying the display information on a display device.

(Operation) Therefore, even if there is a change in the database, the plant data at the specified date and time to be displayed can be displayed with the contents of the database at the date and time, so that accurate and meaningful display of the plant data can be performed.

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

FIG. 1 shows a plant data collection and display device according to one embodiment of the present invention.

In the plant data collection and display device 1, the plant data collection unit 11 inputs plant data from the power generation plant 2 at a predetermined timing, and the data input is performed with reference to the stored contents of the database 12 and collected. The plant data is stored in the collected data file 13 as appropriate.

The database initial value setting unit 14 stores the database before change set in the plant data collection and display device 1.
The 12 states are accumulated in the database change record storage file 15.

The database changing unit 16 interacts with the operator console 3 to change the contents of the database 12.
Further, the contents of the change are notified to the database change recording unit 17, the database change recording unit 17 shapes the database change information into a predetermined format (described later), and accumulates the database change information in the database change record storage file 15 as appropriate.

Based on the date, month, day, hour, minute, and second (hereinafter simply abbreviated as “date”) instructed from the operator console 3, the restoration display output unit 18 displays the contents of the database 12 as of the requested date.
It is restored from the storage contents of the database change record storage file 15 and reconfigured into the reference database 19. Then, the plant data instructed from the operator console 3 at that time is read from the collected data storage file 13, and
Display information is formed based on the contents of the reference database 19 and output to the display device 4.

The display device 4 displays plant data instructed by an operator by a CRT display device 41 and a printing device 42 including a typewriter (TW) and a line printer (LP).

As shown in FIG. 2 (a), the database 12 has an analog input point information input table TBA storing various information (described later) relating to each plant data (analog data), a conversion formula of a unit of analog data, and the like. And a limit information table TBR storing various limit values applied to the analog data.

The analog input point information input table TBA is shown in FIG.
As shown in (1), following the first table name, analog input point information on each analog data is sequentially arranged.

In the conversion information table TBC, as shown in FIG. 10C, the conversion information for each is sequentially arranged following the first table name.

In the limit information table TBR, as shown in FIG. 3D, each limit information is arranged following the first table name.

 FIG. 3 shows an example of the analog input point information.

In the figure, point identification information PID is for identifying an analog input point (that is, analog data), and includes, for example, a two-digit alphabet and a three-digit number.

The controller number CNT, group number GP, and position number PS are specified as follows, for example, based on internal identification information IDD for internally identifying analog data.

CNT = (IDD / 256) GP = (IDD- (CNT * 256)) / 8 PS = (IDD- (CNT * 256))-(GP * 8) Abbreviated name ABR is a name for identifying analog data. It is. However, the number of digits is limited to, for example, 20 digits.

The alarm-related group number ANO indicates the number of the alarm lamp that is turned on among the alarm lamps attached to the monitoring device that monitors the power plant 2 when the analog data is abnormal.

The number of digits after the decimal point FN indicates the number of significant digits after the decimal point of the information input as analog data.

The base class CLS represents a basic sampling cycle of analog data.

When a plurality of processors (CPUs) exist, for example, when the system is configured hierarchically, the connection type CPU is used to identify which processor has input the analog data.

The pseudo analog flag PSU indicates that this analog data
This is for identifying whether the data is pseudo analog data formed by applying a predetermined calculation formula to data input from a plurality of points.

The sensor type SNS indicates the type of the sensor that has input the analog data.

The gain GAIN is a coefficient for appropriately setting the full range of analog data.

The input signal range RL is for setting a limit value of analog data.

The alarm condition ASUP indicates a condition when it is assumed that another condition is satisfied in order to determine that the analog data is an abnormal value.

The conversion index CNV indicates at which position in the conversion information table TBC the conversion information storing the conversion formula for converting the analog data into display units and the like is stored.

The limit number LMT indicates where the limit information for setting the limit value of the analog data is stored in the limit information table TBR.

The limit number LMT indicates the number of limit information. When a plurality of pieces of limit information are set for one analog data, the plurality of pieces of limit information are continuously stored in the limit information table TBR.

FIG. 4A shows an example of the storage contents of the database change record storage file 15.

The database change record storage file 15 includes database initial information, which is information at the time of initializing the database 12, and
It consists of database change information indicating the contents of change of the database 12. This database change information is stored in the database
It is accumulated every time the contents of 12 are changed.

The database initial information is, as shown in FIG.
It is composed of the date when this database initial information was accumulated and the analog input point information input table in the database 12 at that time.

An example of the database change information is shown in FIG. In this case, the point identification information PID and the number of digits after the decimal point FN are 2
Two items have changed.

The database change information includes a change date DA1 indicating the date, month, day, hour, minute, and second when the change was made, the number of words WDN, indicating the length of the database change information, a table name NMT indicating the table including the change target, and the beginning of the table including the change target. It consists of change point information PTX indicating the distance (number of words or bytes) from to the object to be changed, table contents before change COB indicating contents before change, and table contents after change COA indicating contents after change.

In this case, since there are two items to be changed, the content COB of the table before change includes the content type 1 indicating that the item to be changed is the point identification information PID and the point identification information PI before the change.
D and a content type 2 indicating that the changed item is the number of decimal places FN, and the number of decimal places FN before the change.

The table contents COA after change includes a content type 1 indicating that the changed item is the point identification information PID, a point type information PID after the change, and a content type indicating that the changed item is the number of decimal places FN. It consists of 2 and the number of decimal places FN after the change.

An example of collected data stored in the collected data storage file 13 is shown in FIG. In this case, data collection is performed for each group according to the state of the power plant 2 (for example, starting, stopping, and the like).

The collected data includes a collection date DA2 indicating the collected timing in year, month, day, hour, minute, and second, a group name NMG for identifying the group, and plant data DTP for each of the groups. Each plant data DTP is composed of the point identification information PID and its input value INP.

Next, FIG. 6 shows a processing example of the restoration display output unit 18 when a display command is output from the operator console 3.
Note that the display command is added with the point identification information PID requesting display and the date requesting display.

The restoration display output unit 18 first determines whether the display command is the first one (decision 101).

If the result of the determination 101 is YES, the contents of the reference database 19 are initialized to the contents of the analog input point information input table of the database initial information stored in the database change record storage file 15 (process 102). .
Then, the date to be added to the reference database 19 (hereinafter referred to as the reference database date) is initialized to the date of the database initial information stored in the database change record storage file 15 (process 103).

Next, all the database update information included in the period from the reference database date to the date requested to be displayed by the display command (hereinafter, referred to as a request date) is read out from the database change record storage file 15, and the database update information is sorted in the date order. Then, a database correction process (process 104) for changing the content of the reference database according to the content is executed.

If the result of the judgment 101 is NO, it is checked whether or not the request date is earlier than the reference database date (decision 105).

If the result of this determination 105 is NO, processing 104 is executed.

If the result of the determination 105 is YES, all the database update information included in the period from the request date to the reference database date is read out from the database change record storage file 15, and according to the content in the reverse order of the date of the database update information, A database correction process 2 (process 106) for changing the contents of the reference database is executed.

In this way, when the content 19 of the reference database is changed to the state of the request date, the reference database date is updated to the request date (process 107), and of the plant data requested to be displayed by the display command, the data of the request date is replaced. The data is read from the collected data storage file 13 (process 108).

Then, display information is formed based on the read plant data and the analog input point information corresponding to the data stored in the reference database 19, and the display information is output to the display device 4 (process 109).

As a result, the specified plant data on the date specified by the operator is appropriately displayed on the CRT display device 41 and recorded and output from the printing device.

With the above configuration, when the plant data collection and display device 1 is connected to the power generation plant 2, the database initial value setting unit 14 is started by the plant data collection unit 11, and the contents of the database 12 at that time are used as database initial information. It is stored in the database change record storage file 15.

Thereafter, the plant data collection unit 11 inputs the plant data of the power generation plant 2 at a predetermined timing while referring to the contents of the database 12, and stores the data in the collected data storage file 13 sequentially as collected data in the format described above. .

For example, when it is necessary to change the corresponding analog input point information of the analog input point information input table TBA stored in the database 12, for example, when the sensor used for the analog input point is changed, the operator , From the operator console 3, the database change unit
Notify 16.

As a result, a database change screen of a predetermined format is displayed on the operator console 3. Then, the operator appropriately operates the operator console 3 while interacting with the screen, and changes the contents to the database changing unit 16.
Command.

When the operator's command operation is completed, the database change unit 16 updates the contents of the database 12 according to the change, and notifies the database change recording unit 17 of the change.

Thereby, the database change recording unit 17 forms database change information in the above-described format based on the notified change content, and stores the database change information in the database change record storage file 15.

Thus, each time the database 12 is changed, database change information corresponding to the change is stored in the database change record storage file 15 each time.

Then, when the operator instructs the display of the plant data from the operator console 3, the instruction is notified to the restoration display output unit 18. Thereby, the restoration display output unit
18 executes the above-described processing to convert the designated plant data on the date designated by the operator into a CRT.
The information is displayed on the display device 41 and recorded and output from the printing device 42.

In this way, the collection of the plant data, the update of the database 12, and the display output of the plant data are respectively performed.

Incidentally, a large-capacity auxiliary storage device can be used as the collected data storage file 13 and the database change record storage file 15. If an optical disk device capable of exchanging media is used as the auxiliary storage device, data can be collected almost without limit. Further, in this case, by using a device having the same function as the above-described restoration display output unit 18, data comparison and analysis can be performed in a plurality of power plants.

Further, by outputting the stored contents of the database change record storage file 15 in chronological order, it is possible to grasp the state of the change in the database, and it is possible to determine a change mistake, a change omission, and the like.

[Effects of the Invention] As described above, according to the present invention, input point information,
The plant data collected from the plant is stored together with the collection date and time in a file by referring to a database that stores various information on the plant data to be collected, such as unit conversion formulas and limit values. In a plant data collection and display device for displaying plant data on a display device, a plant data collection unit that collects plant data based on the database and saves the collected data with a collection date and time in a collected data storage file, and stores initial information of the database. Database initial information storage means, a database change means for changing the database based on an instruction from the operator console, and saving the changed contents together with the change date and time in a database change record file, and a date and time designated from the operator console. When the display request is made in the state of being changed, one or more changes in which the change date and time up to the designated date and time are stored are read from the database change record storage file, and the read one or more changes are A reference database representing the database at the specified date and time based on the initial information of the database stored in the database initial information storage means, and referring to the reference database to determine the date and time of the specified date and time. The system is equipped with a reconstructed display output unit that reads out the plant data from the collected data storage file and forms display information of the read out plant data and displays it on the display device. The plant data at the date and time can be displayed and processed with the contents of the database at the date and time. Result, such an effect that it is possible to display accurate and meaningful plant data.

[Brief description of the drawings]

FIG. 1 is a block diagram showing a plant data collection and display device according to one embodiment of the present invention, FIG. 2 (a) is a schematic diagram showing an example of the contents of a database, and FIG. 1 (b) is an analog input point information input Schematic diagram showing an example of a table, FIG.
Is a schematic diagram showing an example of a conversion information table, FIG. 4D is a schematic diagram showing an example of a limit information table,
FIG. 3 is a schematic diagram showing an example of analog input point information, FIG.
FIG. 1A is a schematic diagram showing an example of the contents of a database change record storage file, FIG. 2B is a schematic diagram showing an example of database initial information, and FIG. 1C is a schematic diagram showing an example of database change information. FIG. 5, FIG. 5 is a schematic diagram showing an example of data to be stored, and FIG. 6 is a flowchart showing a processing example of a restoration display output unit. 14: Database initial value setting unit, 15: Database change record storage file, 17: Database change record unit, 18: Restore display output unit, 19: Reference database.

Claims (1)

(57) [Claims] A plant data collected from a plant is stored in a file together with a collection date and time by referring to a database storing various information on plant data to be collected, such as input point information, unit conversion formulas, limit values, and the like. In advance,
In a plant data collection and display device for displaying necessary plant data on a display device when necessary, collecting plant data based on the database,
A plant data collection unit for storing the collection date and time in a collection data storage file, a database initial information storage unit for storing the database initial information, and changing the database based on an instruction from an operator console, and changing the contents of the change. A database change means for storing the change date and time in a database change record storage file, and one or more changes in which the change date and time up to the specified date and time are stored when the display is requested from the operator console with the date and time specified. The contents are read out from the database change record storage file, and the database at the designated date and time is read based on one or more read out changes and the database initial information stored in the database initial information storage means. Represents A reference database, read the plant data of the collected data storage file at the specified date and time by referring to the reference database, and form display information of the read plant data and display the restored data on the display device. A plant data collection and display device comprising output means.