JPH1115519A - Process diagnostic apparatus, process diagnostic method, and recording medium - Google Patents

Abstract

(57) [Summary] [PROBLEMS] To easily and visually grasp monitoring logic of a sewage treatment plant. A computer (2) arranges a plurality of icons (100 to 110) on a display screen vertically and horizontally to set child rules for individually diagnosing data input from a plurality of measuring devices, respectively. For example, when the icon 104 and the icon 107 are instructed, the rule editing unit 26 refers to the database 25 to determine whether or not they can be related to each other, and
When it is impossible to associate the 107 with each other, they are connected to each other by a thin horizontal line, and when they can be associated, they are connected to each other by a thick horizontal line.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field 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]

2. Description of the Related Art In a sewage treatment plant, for example, a flow meter for measuring a flow rate of sewage flowing into the plant, a water level meter for measuring a water level of a pond (sedimentation pond) for storing sewage, and a thermometer for measuring the temperature thereof Instruments that inspect and analyze sewage water quality are used, and the data (process data) obtained from each measuring device is applied to monitoring logic, which is useful for plant control and monitoring.

In conventional monitoring logic, a designer generates a diagnostic rule by combining symbols such as logical product (AND) and logical sum (OR).

When a person other than the designer himself verifies this monitoring logic, the flow of signals and the like can be determined from these symbols, but the meaning of the judgment of each logic cannot be read, and the analysis is very difficult. It takes a lot of time.

[0005] Even if the monitoring logic itself has not been mistaken as a result of the verification, the monitoring logic is completely complete unless a person who is familiar with the functions and mechanisms of the sedimentation pond, regulating pond, and various reaction tanks of the sewage treatment plant is used. It is impossible to find out whether it works or not, and an abnormality that occurs in the plant is overlooked.

[0006]

As described above, conventionally, a designer generates a monitoring logic by combining symbols such as a logical product and a logical sum in consideration of the conditions of each process. When verifying the monitored logic, there is a problem that the logic cannot analyze the monitoring logic only by the person who designed the monitoring logic without knowing the process conditions and the like in detail.

SUMMARY OF THE INVENTION The present invention has been made to solve such a problem, and is a process for generating monitoring logic by combining diagnostic rules of individual processes so that the monitoring logic can be visually easily understood. It is an object to provide a diagnostic device, a process diagnostic method, and a recording medium.

[0008]

According to a first aspect of the present invention, there is provided a process diagnostic apparatus for diagnosing data input from a plurality of data sources individually. Means, means for diagnosing diagnostic processing executed by each diagnostic processing means as icons, arranged vertically and horizontally on a display screen, and instructions for associating diagnostic keys displayed vertically and horizontally on the display screen And a determination unit that determines whether or not the diagnostic keys specified by the input unit can be associated with each other. As a result of the determination by the determination unit, the diagnostic keys are related. Means for performing a relation display by changing a display mode between a case where connection is impossible and a case where connection is possible.

According to a second aspect of the present invention, there is provided a process diagnostic method, wherein diagnostic keys for individually diagnosing data input from a plurality of data sources are arranged vertically and horizontally on a display screen and displayed. When an instruction is given to relate diagnostic keys displayed vertically and horizontally on the screen, it is determined whether or not the diagnostic keys can be related to each other, and the diagnostic keys cannot be related to each other. The present invention is characterized in that the display of the association is performed by changing the display mode between the case and the case where the association is possible.

According to a third aspect of the present invention, there is provided a recording medium, wherein diagnostic keys for individually diagnosing data input from a plurality of data sources are arranged vertically and horizontally on a display screen and displayed. When an instruction to relate diagnostic keys displayed vertically and horizontally is given, a determination is made as to whether or not the diagnostic keys can be related to each other, and if the diagnostic keys cannot be related to each other. It is characterized in that a program for causing a computer to execute a process of performing the association display by changing the display mode when the association is possible is recorded.

According to the present invention, it is determined whether or not the diagnostic keys designated by the input means can be related to each other. Since the association display is performed by changing the display mode, it is possible to visually recognize whether or not the relationship between the diagnostic keys is normal.

[0012]

Embodiments of the present invention will be described below in detail with reference to the drawings.

FIG. 1 is a diagram showing the configuration of a plant state diagnosis apparatus according to one embodiment of the process diagnosis apparatus of the present invention.

In FIG. 1, reference numeral 1 denotes a data source.
The data generation source 1 is a water level meter 1a installed in a sedimentation basin for storing sewage treated in a sewage treatment plant, and constantly measuring the height (water level) of the water accumulated in the sedimentation basin. In the sewage treatment plant, as a data source 1 other than the water level meter 1a, for example, a flow meter 1b, a thermometer 1c,
A water quality analyzer 1d and the like are also installed. Reference numeral 2 denotes a computer, which 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. 3 is a data transmission means,
This is for transmitting data from the data source 1 to the computer 2, such as an RS232C cable or Ethernet.
(Communication network), MAP (Manufacturing Automation Proto
col: industrial LAN).

The computer 2 has 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 input devices such as a keyboard and a mouse, and various measuring instruments at a fixed period (at a fixed time interval), attaching a time stamp to the data, and inputting the data as process data to the computer 2. It is. The child rule setting unit 22 is for setting conditions of various child rules on a display screen.
Here, the child rule refers to a diagnostic processing procedure (monitoring logic) of a minimum unit for determining whether a process is normal or abnormal based on data from each measuring device. The child rule determining unit 23 compares 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 determining unit 24 determines whether a parent rule related to a child rule that is abnormal is normal or abnormal. Database 2
Reference numeral 5 denotes a rule database storing specific monitoring logic (diagnosis processing procedure) of the child rule and the parent rule. The rule editing unit 26 refers to the database 25 for the connection relationship between the child rules or between the child rule and the parent rule specified by the input unit 21 and determines whether the mutual relationship is normal or abnormal. Depending on the type of line connecting them, for example, the color or thickness of the line is changed to associate them, or the displayed rule buttons are rearranged. The abnormality notification unit 27 is, for example, a display device such as a monitor, and displays a diagnostic key in which a child rule and a parent rule are pictographed on a display screen, that is, an icon. Further, the abnormality notification unit 27 notifies an abnormality generated by the parent rule to the outside.

Hereinafter, the operation of the plant condition diagnosis apparatus will be described with reference to FIGS.

FIGS. 2 to 4 show examples of setting conditions for child rules, FIG. 5 shows an example of the configuration of a parent rule, and FIG. 6 shows a specific example of a parent rule.

As shown in FIG. 2, a certain child rule sets an abnormal upper limit value for certain process data, for example, data from the water level gauge 1a disposed in the first settling tank.
The processing is set to 1 m or the like, the lower limit value at which an abnormality occurs is set to -10 m, and if the data value deviates from these threshold values, it is determined that the data is abnormal.

As shown in FIG. 3, there is a child rule in which only the abnormal upper limit value is set to -1 m or the like with respect to the data from the water level gauge 1a.

Further, as shown in FIG. 4, there is a child rule in which only the abnormal lower limit value is set to -10 m for the data from the water level gauge 1a.

The parent rule is a diagnostic processing procedure for determining a comprehensive abnormality by associating a plurality of child rules described above.

For example, as shown in FIG. 5, a logical sum of a child rule 31 which is a rule for determining the upper limit abnormality of the first sedimentation basin B and a child rule 32 which is a rule for determining the upper limit abnormality of the first sedimentation basin A is calculated. To take them, connect each other in tandem,
In order to obtain the logical sum of the child rule 33 of the lower limit abnormality of the reservoir and the child rule 34 of the lower limit abnormality of the regulating pond, they are connected in tandem to determine the child rule 34 and the lower limit abnormality of the first sediment B. In order to obtain a logical product of the child rule 35 and the child rule 35, they are connected in parallel, and the outputs of the child rule 32 and the child rule 34 are connected to the parent rule 40 to make a comprehensive judgment. If the parent rule 40 is arranged on the left side of the rule 34, a kind of logic circuit can be formed by displaying the key arrangement of each rule.

The abnormality diagnosis rule shown in FIG. 5 is based on the rule that the inflow water from the upstream process enters the first sedimentation basin A and the first sedimentation basin B as shown in FIG. A,
The present invention is applicable to a plant in which water discharged from B flows into a downstream process via a regulating pond.

In this case, of the first settling basin A or B,
If either one exceeds the upper limit and the other first sedimentation basin B or A does not exceed the upper limit, there is no danger of the sedimentation basin overflowing, and the amount of water in the first sedimentation basins A and B satisfies the lower limit. If there is not enough water in the reservoir, the water will flow to downstream processes.

Here, the conditions under which the parent rule 40 becomes abnormal will be summarized.

As a first condition, when both the child rule 31 and the child rule 32 become abnormal, the parent rule 40 is determined to be abnormal. That is, the logical sum of the child rule 31 and the child rule 32 is calculated, and if "1" is output as the calculation result, the parent rule 40 determines that this process is abnormal.

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, and the logical product of the logical rules of the child rule 34 and the child rule 35 is calculated. If output, the parent rule 40 determines that this process is abnormal.

In monitoring a sewage treatment plant, a parent rule is one child rule. For example, as shown in FIG. 7, the treated water flows from the first settling ponds A and B into the regulating pond, and the water flowing out of the regulating pond flows into the biological reaction tank,
In the case of a sewage treatment plant in which the water flowing out of the biological reaction tank flows into the second sedimentation basin, even if an upper or lower limit abnormality occurs in each pond, the water flows smoothly from upstream to downstream. In this case, it is not necessary to notify the individual abnormalities to the outside.

When the monitoring logic is generated by connecting icons corresponding to a plurality of rules with vertical and horizontal lines to the plant having such a configuration, as shown in FIG. Parent rule 40 for judging abnormality with regulating pond, parent rule 41 for judging abnormality in biological reaction tank, second sedimentation basin C
Assuming that a parent rule 42 for judging an abnormality of the parent rule and an event that needs to be notified comprehensively among the abnormalities of the parent rule are an external notification 43 and the like, the parent logic 40 and the parent rule 41 are used as monitoring logic. The parent rule 41 and the parent rule 42 are connected by a vertical line (logical product), and the parent rule 41 and the external notification 43 are connected by a horizontal line (logical sum).

Here, the child rules 31 to 35 as described above are used.
A specific display example for generating the parent rules 40 to 43 will be described.

In the case of this plant condition diagnosis apparatus, an editing screen 90 having an operation mode menu bar 91 is displayed on the monitor display screen as shown in FIG. On the editing screen 91, icons 100 to 110 for associating rules with each other are displayed. The icons 100 to 110 in this state have not yet been associated with child rules or parent rules. Here, the horizontal arrangement indicates rules to be ORed, and the vertical arrangement indicates rules to be ANDed.

Here, when the user operates the input unit 21 to select "edit" on the menu bar 91 and designates the icon 104, a window 92 for registering a diagnostic rule is displayed as shown in FIG. .

Here, when a process, for example, an upper limit value and a lower limit value such as the amount of diffused air in the first system is input and “SET” is selected, the child rule setting unit 22 changes the icon 104 to the above 1
It is associated with a child rule that determines data from the system diffused air volume. This operation is performed with another icon, for example, the icon 10
The process is repeatedly performed for 7, 108, 109, 110, etc., so that the process is associated with the child rules of each process. In this case, the icon 110 is associated with the parent rule.

Subsequently, when the user operates the input unit 21 to select “connection” on the menu bar 91 and designates the icon 104 and the icon 107, the rule editing unit 26 refers to the database 25 and checks each other's rules. It is determined whether or not the association can be normally performed. As a result of this determination, when the mutual relationship is possible, the two are connected by, for example, a thick horizontal line, and when the mutual relationship is impossible, the two are connected by a thin horizontal line.

In the case of this embodiment, as shown in FIG. 11, since the icon 104 and the icon 107 cannot be related, they are connected to each other by a thin horizontal line 111.
When the editing screen 90 is color, the color of the line may be different. By repeating this operation, the child rule and the parent rule are related to each other, and the monitoring logic can be created by moving the position of the impossible rule or changing the connection later.

As described above, according to the plant condition diagnosis apparatus, a plurality of child rules 31 to 35 and a plurality of parent rules 4
When icons 101 to 110 indicating 0 to 43 are displayed vertically and horizontally on the display screen and the vertical line is a logical product and the horizontal line is a logical sum, the input unit 21 instructs a relation between the two icons. The editing unit 26 determines whether or not the icons can be connected, and the two icons are connected and displayed with either a thick line or a thin line according to the determination result. It is easier to visually grasp the relationship between the processes in the sewage treatment plant than when describing the symbols themselves.

The present invention is not limited to the above embodiment.

For example, each unit (the data reading unit 21, the child rule setting unit 22, the child rule determining unit 23, the parent rule determining unit 24, the database 25,
The functions (processing) of the rule editing unit 26, the abnormality notification unit 27, etc.) are programmed, and as shown in FIG.
-Write to a recording medium such as a ROM 50,
The D-ROM 50 is mounted on a computer 51 equipped with a CD-ROM drive, and the computer 51 loads a program from the CD-ROM 50, thereby realizing the same function as the above embodiment. In addition, as a recording medium,
In addition to the CD-ROM 50, a magnetic tape, DVD-R
An OM, floppy disk, MO, MD, CD-R, memory card, or the like may be used.

When the above functions (processes) are programmed, the present invention is not limited to the form of the CD-ROM 50 or the like, but there is also a means for realizing the above functions.

For example, the present invention can be realized by loading the above-mentioned program from a computer or the like recorded on a hard disk or the like to another computer via a public line network or a LAN.
In addition to data communication networks such as public line networks and LANs,
It is also conceivable to send and receive the above program by wireless communication.

[0041]

As described above, according to the present invention, the relationship between the diagnostic keys arranged vertically and horizontally on the display screen is changed depending on the display form between when the diagnostic keys cannot be related and when the diagnostic keys can be related. Since the display is performed, it is possible to visually recognize 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 diagnostic apparatus according to one embodiment of the present invention.

FIG. 2 is a diagram showing an example of a child rule used by the plant state diagnosis device.

FIG. 3 is a diagram showing an example of a child rule used by the plant state diagnosis device.

FIG. 4 is a diagram showing an example of a child rule used by the plant state diagnosis device.

FIG. 5 is a diagram illustrating an example of monitoring logic that associates a plurality of child rules with a parent rule.

6 is a diagram showing a configuration example of a sewage treatment plant monitored by the monitoring logic of FIG.

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 in FIG. 7;

FIG. 9 is a diagram showing 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 source, 2 ... Computer, 3 ... Data transmission means,
21: data reading unit, 22: child rule setting unit, 23: child rule determining unit, 24: parent rule determining unit, 25: database, 26: rule editing unit, 27: abnormality notification unit

Claims (3)

[Claims] 1. A plurality of diagnostic processing means for individually diagnosing data respectively input from a plurality of data sources, and diagnostic keys in which diagnostic processing executed by each diagnostic processing means are iconized are displayed vertically and horizontally on a display screen. Means for arranging and displaying; input means for giving an instruction for associating diagnostic keys displayed vertically and horizontally on the display screen; whether the diagnostic keys designated by the input means can be associated with each other Determination means for determining whether or not the diagnostic key is determined; and as a result of the determination by the determination means, means for performing a relation display by changing a display mode between a case where the diagnosis key cannot be related and a case where the diagnosis key can be related. A process diagnostic apparatus comprising: 2. Diagnosis keys for individually diagnosing data input from a plurality of data sources are individually arranged vertically and horizontally on a display screen, and the diagnostic keys displayed vertically and horizontally on the display screen. When an instruction to associate the diagnostic keys is given, a determination is made as to whether or not the diagnostic keys can be associated with each other, and a display is made when the diagnostic keys cannot be associated with each other and when the diagnostic keys can be associated with each other. A process diagnosis method, characterized in that a relation display is performed by changing a form. 3. Diagnosis keys for individually diagnosing data respectively input from a plurality of data sources are arranged vertically and horizontally on a display screen, and are displayed vertically and horizontally on said display screen. When an instruction to associate the diagnostic keys is given, a determination is made as to whether or not the diagnostic keys can be associated with each other, and a display is made when the diagnostic keys cannot be associated with each other and when the diagnostic keys can be associated with each other. A recording medium on which a program for causing a computer to execute a process of performing association display in a different form is recorded.