JP3713362B2 - Process diagnostic apparatus, process diagnostic method, and recording medium - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a process diagnosis apparatus, a process diagnosis method, and a recording medium used in, for example, a sewage treatment plant.
[0002]
[Prior art]
For example, in a sewage treatment plant, a flow meter that measures the flow rate of sewage flowing into the plant, a water level meter that measures the water level of a pond (sedimentation basin) in which sewage is stored, a thermometer that measures its temperature, Instruments for inspection and analysis are used, and data (process data) obtained from each measuring device is applied to the monitoring logic, which is useful for plant control and monitoring.
[0003]
By the way, in the conventional monitoring logic, a designer generates a diagnostic rule by combining symbols such as logical product (AND) and logical sum (OR).
[0004]
When a person other than the designer verifies this monitoring logic, the flow of the signal can be understood from these symbols, but the meaning of each logic judgment cannot be read, and it takes a lot of time for analysis. It will take.
[0005]
In addition, even if there is no mistake in the monitoring logic itself as a result of the verification, if the monitoring logic is not fully functional unless it is a person who is familiar with the functions and mechanisms of the sewage treatment plant sedimentation basin, adjustment pond, various reaction tanks, etc. You will not be able to discover whether or not you will miss an anomaly that occurs in the plant.
[0006]
[Problems to be solved by the invention]
As described above, in the past, a designer has generated monitoring logic by combining symbols such as logical product and logical sum after considering the conditions of individual processes, but when verifying the generated monitoring logic, There is a problem that the logic of the process is not known in detail from the logic, and the monitoring logic cannot be analyzed unless it is the person who designed the monitoring logic.
[0007]
The present invention has been made to solve such problems, and in generating monitoring logic by combining diagnosis rules of individual processes, a process diagnosis device capable of making the monitoring logic easy to understand visually, It is an object of the present invention to provide a process diagnosis method and a recording medium.
[0008]
[Means for Solving the Problems]
In order to achieve the above object, the process diagnosis apparatus according to the first aspect of the present invention includes a plurality of diagnosis processing means for individually diagnosing data respectively input from a plurality of data generation sources, and each diagnosis processing means executes input means for displaying diagnostic processes arranged in a matrix on a display screen diagnostic key and iconized, the indication of relating diagnostic key displayed in a matrix on the front示画plane by a logical sum and logical product performed to results means for inter diagnostic key designated by the input means, based on the monitoring logic recorded in the database, and determining means for determining whether each other association can was determined at the discretion constant means It is characterized by comprising a means for between diagnostic key performs association displayed in a different display form in the case and if association impossible possible association.
[0009]
Process diagnostic methods of the invention described in claim 2, and displays the arranged vertically and horizontally diagnostic key for diagnosing data input from a plurality of data sources individually on the display screen, on the front示画surface when an instruction of relating diagnostic keys displayed vertically and horizontally by a logical sum or logical product is performed, for between diagnostic key, based on the monitoring logic stored in the database, whether the mutual association can be determined is characterized by performing the perform, association displayed in a different display form in the case and the case between cross key is not possible with relationships possible relationships with diagnosis.
[0010]
Recording medium of the invention of claim 3, wherein the display arranged in a matrix of the diagnostic key for diagnosing data input from a plurality of data sources individually on the display screen, the aspect on the front示画surface when an instruction for associating a logical sum or logical product between diagnostic key displayed in is performed, the inter-diagnostics key, based on the monitoring logic recorded in the database, determines whether the mutual association can perform, inter diagnostic key is characterized by recording a program for executing processing for performing association displayed in a different display form in the case and if association impossible possible relationships with the computer.
[0011]
In this invention, after determining whether or not the diagnostic keys instructed by the input means can be related to each other, a display form is displayed depending on whether or not the diagnostic keys can be related to each other. Since the correlation display is performed, it is possible to visually determine whether or not the relationship between the diagnostic keys is normal.
[0012]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
[0013]
FIG. 1 is a diagram showing a configuration of a plant state diagnosis apparatus according to an embodiment of the process diagnosis apparatus of the present invention.
[0014]
In the figure, 1 is a data generation source. The data generation source 1 is a water level meter 1a that is installed in a sedimentation basin for collecting sewage to be treated in a sewage treatment plant and that constantly measures the height (water level) of the water accumulated in the sedimentation basin. In the sewage treatment plant, for example, a flow meter 1b, a thermometer 1c, a water quality analyzer 1d, and the like are installed as a data generation source 1 other than the water level meter 1a. A computer 2 is installed in a building having a sewage treatment plant, and performs calculations for controlling each control device (pump, valve, etc.) related to sewage treatment. Reference numeral 3 denotes data transmission means for transmitting data from the data generation source 1 to the computer 2, such as an RS232C cable, Ethernet (communication network), or MAP (Manufacturing Automation Protocol: industrial LAN).
[0015]
The computer 2 includes an input unit 21, a child rule setting unit 22, a child rule determination unit 23, a parent rule determination unit 24, a database 25, a rule editing unit 26, an abnormality notification unit 27, and the like. The input unit 21 is an interface for reading data output from, for example, an input device such as a keyboard and a mouse, and various measuring instruments at regular intervals (fixed time intervals) and inputting the time stamp to the computer 2 as process data. It is. The child rule setting unit 22 sets conditions for various child rules on the display screen. Here, the child rule means a diagnostic processing procedure (monitoring logic) of a minimum unit for determining whether the process is normal or abnormal based on data from each measuring device. The child rule determination unit 23 compares the data from each measuring device with the setting conditions of each child rule set by the child rule setting unit 22 to determine whether the process state is normal or abnormal. The parent rule determination unit 24 determines whether a parent rule related to a child rule that is abnormal is normal or abnormal. The database 25 is a rule database that stores child rules and specific monitoring logic (diagnostic processing procedures) of the parent rules. The rule editing unit 26 refers to the database 25 for the connection relationship between the child rules instructed by the input unit 21 and between the child rules and the parent rules, and determines whether the mutual relationship is normal or abnormal. Accordingly, the types of lines connecting each other, for example, the color and thickness of the lines are changed and related, and the displayed rule buttons are rearranged. The abnormality notification unit 27 is a display device such as a monitor, for example, and displays a diagnostic key, that is, an icon in which a child rule and a parent rule are pictorialized on a display screen. The abnormality notifying unit 27 notifies the abnormality that has occurred in the parent rule to the outside.
[0016]
Hereinafter, the operation of the plant state diagnosis apparatus will be described with reference to FIGS.
[0017]
2 to 4 are diagrams illustrating examples of setting conditions for child rules, FIG. 5 is a diagram illustrating an example of the configuration of parent rules, and FIG. 6 is a diagram illustrating a specific example of parent rules.
[0018]
As shown in FIG. 2, a certain child rule sets an abnormal upper limit value to −1 m or the like for certain process data, for example, data from the water level gauge 1 a arranged in the first settling basin. The lower limit value is set to −10 m, and when the data value deviates from these threshold values, it is determined to be abnormal.
[0019]
In addition, as shown in FIG. 3, some child rules have only an upper limit value that is abnormal for data from the water level gauge 1 a set to −1 m or the like.
[0020]
Furthermore, as shown in FIG. 4, some child rules have only a lower limit value that is abnormal with respect to the data from the water level gauge 1a set to -10 m or the like.
[0021]
The parent rule is a diagnostic processing procedure for determining a comprehensive abnormality by associating the plurality of child rules described above.
[0022]
For example, as shown in FIG. 5, in order to take the logical sum of the child rule 31 that is the determination rule for the upper limit abnormality of the first sedimentation basin B and the child rule 32 that is the determination rule for the upper limit abnormality of the first sedimentation basin A. In order to connect each other in a column, and to obtain a logical sum of the child rule 33 that is the lower limit abnormality of the first sedimentation basin A and the child rule 34 that is the lower limit abnormality of the adjustment pond, connect each other in a column, 34 and the child rule 35 which is the determination rule for the lower limit abnormality of the first precipitation B are connected in parallel, and the outputs of the child rule 32 and the child rule 34 are connected to the parent rule 40. In order to make a comprehensive determination, if the parent rule 40 is arranged on the left side of the child rule 32 and the child rule 34, a kind of logic circuit can be configured by displaying the key arrangement of each rule.
[0023]
In the abnormality diagnosis rule shown in FIG. 5, as shown in FIG. 6, the inflow water from the upstream process enters the first settling tank A and the first settling tank B in parallel, and these first settling tanks A and B It can be applied to a plant in which water discharged from the water flows into a downstream process through a regulating pond.
[0024]
In this case, even if one of the first sedimentation basins A or B exceeds the upper limit, if the other first sedimentation basin B or A does not exceed the upper limit, there is no possibility that the sedimentation basin overflows. Even if the amount of water in the sedimentation basins A and B is less than the lower limit, if sufficient water remains in the adjustment basin, the water flows to the downstream process.
[0025]
Here, the conditions under which the parent rule 40 becomes abnormal will be summarized.
[0026]
As a first condition, when both the child rule 31 and the child rule 32 are abnormal, the parent rule 40 is determined to be abnormal. That is, if the logical sum of the child rule 31 and the child rule 32 is calculated and “1” is output as the calculation result, the parent rule 40 determines that this process is abnormal.
[0027]
As a second condition, when both the child rule 33 or the child rule 34 and the child rule 35 become abnormal, the parent rule 40 is determined to be abnormal. That is, the logical sum of the child rule 33 and the child rule 34 is calculated, the logical sum of the child rule 34 and the child rule 35 is calculated, the logical product of the logical sums of each other is calculated, and “1” is obtained as the calculation result. If it is output, the parent rule 40 determines that this process is abnormal.
[0028]
In monitoring the sewage treatment plant, the parent rule is also a child rule. For example, as shown in FIG. 7, treated water flows from the first sedimentation basins A and B into the regulation pond, the water that flows out from the regulation pond flows into the biological reaction tank, and the water that flows out from the biological reaction tank is the second sedimentation basin. In the case of a sewage treatment plant that flows into the water, even if an upper limit or lower limit abnormality occurs in an individual pond, etc., if the water flows without stagnation from the upstream to the downstream, the individual abnormality is not reported to the outside. Also good.
[0029]
When a monitoring logic is generated by connecting icons corresponding to a plurality of rules with vertical and horizontal lines for such a plant, as shown in FIG. 8, the first settling basins A and B and the adjustment pond A parent rule 40 for determining the abnormality of the biological reaction tank, a parent rule 41 for determining the abnormality of the biological reaction tank, a parent rule 42 for determining the abnormality of the second sedimentation basin C, and the outside of these parent rules is comprehensively notified to the outside. Assuming that an event requiring occurrence is an external notification 43 or the like, as monitoring logic, the parent rule 40 and the parent rule 41 are connected by a horizontal line (logical sum), and the parent rule 41 and the parent rule 42 are connected by a vertical line (logical product). The parent rule 41 and the external notification 43 are connected by a horizontal line (logical sum).
[0030]
Here, a specific display example in generating the child rules 31 to 35 and the parent rules 40 to 43 as described above will be described.
[0031]
In the case of this plant state diagnosis apparatus, an edit screen 90 having an operation mode menu bar 91 is displayed on the monitor display screen as shown in FIG. On this editing screen 91, icons 100 to 110 for relating rules are displayed. The icons 100 to 110 in this state are not yet related to the child rule or the parent rule. Here, the horizontal arrangement indicates rules to be logically ORed, and the vertical arrangement indicates rules to be ANDed.
[0032]
Here, when the user operates the input unit 21 to select “edit” in the menu bar 91 and designate the icon 104, a diagnostic rule registration window 92 is displayed as shown in FIG.
[0033]
Here, input an upper limit value and a lower limit value such as a process, for example, a 1-system air flow rate,
When “setting” is selected, the child rule setting unit 22 associates the icon 104 with a child rule for determining data from the above-mentioned 1-system airflow rate. By repeating this operation for other icons, for example, icons 107, 108, 109, 110, etc., the child rules of each process are related. In this case, the icon 110 is related to the parent rule.
[0034]
Subsequently, when the user operates the input unit 21 to select “connection” in the menu bar 91 and designates the icon 104 and the icon 107, the rule editing unit 26 refers to the database 25 and associates the rules with each other. It is determined whether or not can be normally performed. As a result of this determination, when mutual relations are possible, they are connected with a thick horizontal line, for example, and when mutual relations are impossible, they are connected with a thin horizontal line.
[0035]
In the case of this embodiment, as shown in FIG. 11, since the association between the icon 104 and the icon 107 is impossible, the thin horizontal lines 111 are connected to each other. If the editing screen 90 is in color, the line color may be different. By repeating this operation, the child rule and the parent rule are related, and the monitoring logic can be created by moving the position of an impossible thing later or changing the connection.
[0036]
Thus, according to this plant state diagnostic apparatus, the icons 101 to 110 indicating the plurality of child rules 31 to 35 and the plurality of parent rules 40 to 43 are arranged on the display screen in the vertical and horizontal directions, and the vertical lines are When a logical product and a horizontal line are logical sums and an association is instructed from the input unit 21, whether or not the icons can be connected is determined by the rule editing unit 26, and the two icons are determined according to the determination result. Since the space between the lines is displayed with either thick or thin lines, it is possible to visually grasp the relationship between processes in the sewage treatment plant rather than when the monitoring logic is described with symbols such as logical sum and logical product. It becomes easy.
[0037]
In addition, this invention is not limited only to the said embodiment.
[0038]
For example, each unit constituting the computer 2 shown in FIG. 1 (data reading unit 21, child rule setting unit 22, child rule determination unit 23, parent rule determination unit 24, database 25, rule editing unit 26, abnormality notification unit 27, etc.) As shown in FIG. 12, the function (processing) is written in a recording medium such as a CD-ROM 50 in advance, and this CD-ROM 50 is mounted on a computer 51 equipped with a CD-ROM drive. By loading a program from the CD-ROM 50, functions similar to those in the above embodiment can be realized. In addition to the CD-ROM 50, the recording medium may be a magnetic tape, DVD-ROM, floppy disk, MO, MD, CD-R, memory card, or the like.
[0039]
Further, when the function (processing) is programmed, the present invention is not limited to the form of the CD-ROM 50 or the like, and there is a means for realizing the function.
[0040]
For example, it can be realized by loading the above program from a computer having a hard disk or the like loaded onto another computer through a public network or LAN. In addition, it is conceivable that the program is exchanged by wireless communication, not limited to a data communication network such as a public line network or a LAN.
[0041]
【The invention's effect】
As described above, according to the present invention, the correlation display is performed by changing the display mode between the case where the diagnostic keys arranged vertically and horizontally on the display screen cannot be related and the case where they can be related. It is possible to visually determine whether or not the relationship between the diagnostic keys is normal. As a result, the monitoring logic can be easily grasped visually.
[Brief description of the drawings]
FIG. 1 is a diagram showing a configuration of a plant state diagnosis apparatus according to an embodiment of the present invention.
FIG. 2 is a diagram illustrating an example of a child rule used by the plant state diagnosis apparatus.
FIG. 3 is a diagram illustrating an example of a child rule used by the plant state diagnosis apparatus.
FIG. 4 is a diagram illustrating an example of a child rule used by the plant state diagnosis apparatus.
FIG. 5 is a diagram showing an example of monitoring logic in which a plurality of child rules and parent rules are associated with each other.
6 is a diagram showing a configuration example of a sewage treatment plant monitored by the monitoring logic of FIG. 5;
FIG. 7 is a diagram showing a configuration example of a sewage treatment plant.
FIG. 8 is a diagram showing an example of monitoring logic for monitoring the sewage treatment plant of FIG. 7;
FIG. 9 is a diagram illustrating an example of monitoring logic generated on a display screen.
FIG. 10 is a diagram showing an example of monitoring logic generated on a display screen.
FIG. 11 is a diagram showing an example of monitoring logic generated on a display screen.
FIG. 12 is a diagram showing an example of loading a program from a CD-ROM.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Data generation source, 2 ... Computer, 3 ... Data transmission means, 21 ... Data reading part, 22 ... Child rule setting part, 23 ... Child rule determination part, 24 ... Parent rule determination part, 25 ... Database, 26 ... Rule Editing unit, 27 ... abnormality notification unit.

Claims (3)

A plurality of diagnostic processing means for individually diagnosing data input from a plurality of data generation sources, and diagnostic keys in which diagnostic processing executed by each diagnostic processing means is displayed as icons arranged vertically and horizontally on a display screen means, input means for instructing which relates in the logical sum between diagnostic key displayed in a matrix on a display screen or logical product, for between the diagnostic keys designated by said input means, which is recorded in the database Based on the monitoring logic, a determination unit that determines whether or not it is possible to relate to each other, and a result of the determination by the determination unit that display whether the diagnostic keys cannot be related to each other or can be related to each other A process diagnosis apparatus comprising: means for performing association display by changing the form. Diagnostic keys for individually diagnosing data respectively input from a plurality of data generation sources are displayed vertically and horizontally on the display screen, and a logical OR or between the diagnostic keys displayed vertically and horizontally on the display screen is displayed. When an instruction to perform a logical product relationship is performed, it is determined whether or not the diagnostic keys can be related to each other based on the monitoring logic recorded in the database, and the diagnostic keys cannot be related to each other. A process diagnosis method characterized in that the association display is performed by changing the display form depending on whether or not the association is possible. Diagnostic keys for individually diagnosing data respectively input from a plurality of data generation sources are displayed vertically and horizontally on the display screen, and a logical OR or between the diagnostic keys displayed vertically and horizontally on the display screen is displayed. When an instruction to perform a logical product relationship is performed, it is determined whether or not the diagnostic keys can be related to each other based on the monitoring logic recorded in the database, and the diagnostic keys cannot be related to each other. A recording medium on which is recorded a program that causes a computer to execute a process of performing association display by changing the display form depending on whether or not association is possible.

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