JP2001312313A - Plant monitoring and control device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a monitoring picture for facilitating the judgment and operation of an operator. SOLUTION: A plant monitoring and control device (200) for controlling a plant corresponding to the operation of an operator (100) and monitoring the monitoring signal of the plant has a display means for monitoring and a state map display control means (232) for judgement support for displaying the change locus of plural variables and the change of the operating mode of the plant or timing of equipment operation on a map corresponding to the monitoring signal while using the plural variables of the monitoring signal as an axis. The change locus of variables is displayed with plural variables of the plant as an axis and the change of the operating mode of the plant or timing of equipment operation is displayed on this map. Thus, judgement rules are displayed on the same map together with the change of variables, the judgement of the operator to the variable change is facilitated, and the selective judgement of a plurality of operation to plural variable changes can be easily and surely supported.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

TECHNICAL FIELD The present invention relates to plant monitoring,
The present invention relates to a plant monitoring and control device that performs control, and more particularly to a plant monitoring and control device for assisting an operator in determining and operating.

[0002] Plant monitoring and control devices are used for monitoring and controlling each plant such as a river control plant, a chemical plant, a nuclear power plant, and a water treatment plant. The plant monitoring and control device monitors the plant, displays the monitoring result to an operator, and controls the plant by operation of the operator. In this plant monitoring and control device,
It is desired to have a function to support the operation.

[0003]

2. Description of the Related Art FIG. 6 is a block diagram of a conventional plant monitoring and control device, and FIG. 7 is an example of a monitoring screen in a plant monitoring unit of the conventional plant monitoring and control device.

In FIG. 6, reference numeral 100 denotes an operator,
Performs plant monitoring and control. Reference numeral 200 denotes a plant monitoring and control device which provides monitoring and control information to the operator 100 via a plant monitoring unit 230 such as a CRT or receives a control signal via an input processing unit 210.

[0005] Reference numeral 210 denotes an input processing unit, which receives an input such as a screen operation or a device operation from the operator 100 and outputs the operation result as a control signal. Reference numeral 220 denotes a data processing unit which receives monitoring signals from the plant 500, converts and processes them into data recognizable by the operator 100, receives operation signals from the operator 100,
These signals are converted into signals recognizable by the control device 200, and the operator 100
And outputs the processing result to the machine side 500 and saves such information.

[0006] 230 is a plant monitoring unit,
The plant monitoring information obtained as an output of the data processing unit 220 is displayed on an interface screen such as a CRT based on a screen operation request from the operator 100 similarly obtained as an output of the data processing unit 220. 231
Is a display control unit, and a plant monitoring unit 2
The display information 30 is processed and created based on a screen operation request from the operator 100 and displayed on a CRT or the like in the form of a trend graph, a bar graph, a digital value, a support message, or the like as shown in FIG.

Reference numeral 300 denotes an input / output relay device, which relays a monitoring control signal between the plant monitoring and control device 200 and the plant 500, including processes such as conversion and amplification. 400
Is a device control device, and the plant monitoring control device 200
Based on the control signal from the controller 500, each device of the plant 500 is controlled, sensor information in the plant 500 is collected, and transmitted to the plant monitoring and control device 200. Reference numeral 500 denotes a plant to be monitored and controlled, for example, a river water level adjustment plant.

In this conventional monitoring and control device, the plant 5
As shown in FIG. 7, the monitor signal of 00 is displayed in the form of a trend graph, a bar graph, and a digital value, and a support message is displayed. For example, in a river water level adjustment plant, the monitoring signal is a measured water level of each river, and the support message is a message of increasing or decreasing the water level.

In the conventional plant monitoring and control device, when it is necessary to operate while selecting a plurality of operation modes in accordance with changes in a plurality of variables, the operator himself / herself based on values read from digital values or trend graphs. The operation has been performed based on the judgment or the judgment of the system based on a predetermined rule (for example, see Japanese Patent Publication No. 4-34711).

[0010]

However, when monitoring and controlling a large-scale plant having a large number of target devices or a plurality of plants located in a wide area with a small number of people, or in response to changes in a plurality of variables, a plurality of plants are required. If it is necessary to operate while selecting an operation mode, the amount of information to be monitored increases,
It is difficult for operators to obtain necessary information according to the situation, or they feel more mental load than necessary, and as a result, operators make mistakes in recognition and judgment and increase the reliability of plant monitoring and control. The problem of lowering has occurred.

For example, in the prior art operator's own judgment, for example, a complicated process such as comparing the magnitudes of two variables A and B, further confirming the range of each value, and selecting an operation mode is considered. This has to be done inside, especially for unfamiliar operators, which leads to an increase in mental load, and also to misjudgment and erroneous operation.

Also, in the latter system judgment, simply displaying the output information of the system results in a black box of the judgment contents, so that the judgment result of the system can be confirmed or the judgment of the operator can be made even in the event of a system failure. It was difficult to make it possible.

Accordingly, an object of the present invention is to provide a plant monitoring and control device having a support function for facilitating judgment and operation of a plant operator.

Another object of the present invention is to provide a plant monitoring and control apparatus for assisting an operator in making a decision and operating in accordance with a change in a plurality of variables.

[0015]

In order to achieve this object,
In addition to controlling the plant according to the operation of the operator of the present invention, the plant monitoring control device that monitors the monitoring signal of the plant includes a monitoring display unit, and a plurality of variables of the monitoring signal according to the monitoring signal. And a state map display control unit for determining support for displaying on the display unit a change trajectory of the plurality of variables and a change in the operation mode of the plant or the timing of equipment operation on a map.

In the present invention, a change trajectory of a variable is displayed with a plurality of variables of the plant as axes, and a change of a plant operation mode and a timing of equipment operation are displayed on this map. For this reason, the judgment rule is displayed on the same map together with the change of the variable, the operator can easily judge the change of the variable, and it is possible to easily and reliably support the selection judgment of the plurality of operations for the plurality of change of the variable.

Further, in the plant monitoring and control device of the present invention,
By predicting the state of the variable in response to the monitoring signal and having a state predicting unit for developing the predicted value on the map, the predicted value is also displayed on the map, and the selection of the next operation can be determined. Easy and reliable support.

Further, a plant monitoring and control apparatus according to another aspect of the present invention includes a monitoring display means and a judgment support for changing a display mode of a plurality of variables of the monitoring signal in accordance with the operation history of the operator. Display control means. By inferring the next operation according to the operation history and changing to a display form suitable for the inference, information desired by the operator can be displayed, and the determination of the state and operation of the plant can be easily and reliably supported.

[0019]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described with reference to embodiments.

[First Embodiment] FIG. 1 is a block diagram of a plant monitoring and control apparatus according to a first embodiment of the present invention, and FIG. 2 is an explanation of a state map showing an example according to the present embodiment. FIG. 3 and FIG. 3 are screen image diagrams illustrating an example of the plant monitoring screen according to the present embodiment.

In FIG. 1, what is shown in FIG. 6, ie,
Reference numerals 100, 200, 210, 220, 230, 23
Blocks denoted by 1, 300, 400, and 500 are the same devices and units as the conventional example in FIG.
A characteristic part of the present invention is a part of units 232 and 233 added for improving the conventional apparatus. The units 232 and 233 constitute the plant monitoring unit 230 and the plant monitoring control apparatus 200. These features will be described below.

Reference numeral 232 denotes a state map display unit for displaying support information in addition to the conventional display unit 231. This unit 232 expresses the change of the operation mode of the plant 500 and the timing of the equipment operation in a state map on an XY graph or a radar chart with the main variables as axes, and changes in data (variables) on this map. This is a state map display unit for judging support in which trajectories are superimposed.

Reference numeral 233 denotes a situation adaptation unit for judging a plant situation, an operation mode to be performed, and processing existing display information such as a trend graph.
4 and a display control unit 235. The situation determination unit 234 includes plant information and operation mode information (automatic, semi-automatic, partially automatic, etc.) obtained as outputs of the data processing unit 220 and the state map display unit 232.
Is a condition determining means for determining a plant condition and an operation mode based on the condition.

The display control unit 235 retrieves / extracts information that needs to be monitored at that time from knowledge prepared in advance according to the situation and operation mode determined by the situation determination unit 234, and displays the information. Display control means to emphasize the information on the screen by changing the color, blinking, thickening the line, changing the line type, or to delete unnecessary information and display it on the screen with the information narrowed down is there.

FIG. 2 shows an example of the above state map. FIG.
As shown in the figure, the horizontal axis represents the Honkawa water level, and the vertical axis represents the tributary water level. The map 5 represents the operation determination area and the areas 1 to 4 indicating the necessary operations, and the locus of the water level change is superimposed thereon. I'm matching. FIG. 3 is an example of a plant monitoring screen incorporating this. The trend graph shows, for example, the time change of the water level of each river, the bar graph shows the magnitude of the water level of each river can be compared, and the display switching button switches the display time unit and the water level amount unit on the time axis. The support message indicates that the water level has increased or decreased, and the status map is as shown in FIG. Further, the display control unit 235 is applied to the graph of the example of the plant monitoring screen in FIG. 3 and is used for highlighting and the like.
For example, the water level of a specific tributary is emphasized (color, bold line).

In the conventional plant monitoring unit, when it is necessary to operate while selecting a plurality of operation modes in accordance with changes in a plurality of variables, the operator himself / herself judges based on digital values or values read from a trend graph. Alternatively, the operation has been performed based on a judgment of the system based on a predetermined rule.

In the former operator's own judgment, for example, A,
B It is necessary to compare the size of the two variables and confirm the range of each value, and then perform complicated processing such as selecting the operation mode in the mind. This has led to an increase, and further to incorrect judgments and erroneous operations. In contrast, the map display unit 232 of the present invention
Thus, the determination rule can be visualized on the map, and the current and future operation modes can be easily recognized by indicating the trajectory of the variable change.

Further, in the latter system judgment, the contents of the judgment are made into a black box by simply displaying the output information of the system. However, the map display unit 232 of the present invention allows the user to confirm the judgment result of the system, It is possible to expect effects such as enabling the operator to make a decision even in the event of a system failure.

Further, in the present invention, in addition to the status map of the unit 232, a monitoring means such as a trend graph is displayed in combination. In the conventional plant monitoring means, when the number of monitored variables increases, it is necessary for the operator to take measures such as narrowing down or switching required variables for each situation.
For example, even though a maximum of eight trend graphs can be displayed, monitoring is often performed by focusing on only two or three graphs in a specific situation. At that time, the operator himself displays unnecessary graphs other than those to be monitored. It was necessary to take measures such as erasing and displaying only necessary graphs. In this case, if you are forced to change the graph display for each situation, or if there is no erasing function, it will be a factor that increases mental load by performing narrowing down processing in your head. There was a problem that sudden changes in variables were overlooked and the response was delayed.

To solve the above problem, the situation adapting means 2 of the present invention
By introducing the function of highlighting monitoring information by 33,
It is possible to easily pay attention to the variables to be monitored for each situation, eliminate the need for the operator to select variables himself, concentrate on monitoring control decisions, and respond to changes in variables other than the variables of interest. Can be

As a result of the above support, the operator's judgment is easy.
As a result, reliability in plant monitoring and control can be improved. Each of these units is configured by software, but can also be realized by hardware.

[Second Embodiment] FIG. 4 is a block diagram of a plant monitoring and control apparatus according to a second embodiment of the present invention. In FIG. 4, those shown in FIGS. 1 and 6;
That is, reference numerals 100, 200, 210, 220, 230,
Blocks denoted by 231, 232, 233, 300, 400, and 500 are the same devices and units as those in FIGS. The feature of the present embodiment is that the plant monitoring and control device 200 is configured by adding a unit 236 to the configuration of FIG. 1 of the first embodiment in FIG. This feature will be described below.

A unit 236 is a state prediction unit for predicting the future values of the main variables based on the time series information of the main variables of the plant and the current operation status, such as a physical model or multiple regression. This can be realized by a plurality of modeling methods such as a mathematical model.

The result of prediction (predicted value) by the state predicting unit 236 is additionally displayed as a predicted water level on a graph of a trend graph in the example of the plant monitoring screen in FIG.

In the conventional plant monitoring means, for each variable, an operator predicts a change on the basis of a past trend, and performs monitoring control based on a result of the prediction.
However, although the predicted value can be relatively easily imaged for each variable on the trend graph, there is a problem that the position on the state map expressed by a combination of a plurality of variable values is hard to imagine.

In order to solve the above problem, by introducing the prediction function according to the present embodiment and outputting the result on a state map, it is possible to easily and reliably recognize the operation mode of the plant in the future. .

[Third Embodiment] FIG. 5 is a block diagram of a plant monitoring and control apparatus according to a third embodiment of the present invention. In FIG. 5, those shown in FIGS. 1, 4 and 6, that is, reference numerals 100, 200, 210, 220, 23
0, 231, 232, 233, 236, 300, 40
Blocks indicated by 0,500 are the same devices and units as those in FIGS. 1, 4 and 6, and therefore will not be described. The feature of the present embodiment is that, in FIG. 5, a unit 237, which is a feature of the present embodiment, is added to the configuration of FIG. I have. This feature will be described below.

Reference numeral 237 denotes an intention inference unit, which is used as a response for the current and future plant control, in a situation where a plurality of options are considered, from history information such as plant monitoring information and operator's equipment operation / screen operation history. Based on the judgment knowledge using the information, it is estimated which option the operator intends to cope with now and in the future.

The result of the inference by the intention inference unit 237 is input to the situation determination unit 234 and is used for determination for display control. For example, it is reflected as a display change of a graph in the example of the plant monitoring screen in FIG.

When the current and future measures are fixedly determined according to the plant situation, the subsequent measures and necessary information are estimated from the past, present and predicted values of the plant and displayed. It was possible to do. However, in situations where multiple actions can be taken, it is difficult to narrow down the display to specific information, as the choice of the action method depends on the intention of the operator, and the operator selects the display information each time. Needed.

In order to solve the above problem, the present embodiment introduces an intention inference function, and searches and extracts monitoring information necessary for a specific response estimated as a result of the inference from knowledge prepared in advance. By displaying on the monitoring screen,
It is possible to display monitoring information adapted not only to the plant status but also to the intention of the operator, and it is possible to perform monitoring easily and reliably.

In this example, it is only necessary to add an intention inference function for display control to the plant monitoring screen.

Although the present invention has been described with reference to the embodiments, various modifications are possible within the scope of the present invention, and these are not excluded from the technical scope of the present invention.

[0044]

According to the present invention, the change trajectory of a variable is displayed with a plurality of variables of the plant as axes, and a change in the operation mode of the plant and the timing of equipment operation are displayed on this map. Are displayed on the same map with the change of the variable, the operator can easily determine the change of the variable, and can easily and reliably support the selection and determination of the plurality of operations for the plurality of changes of the variable.

Also, since the display control means has a display control means for changing the display mode of the plurality of variables of the monitoring signal in accordance with the operation history of the operator, the following operation can be performed in accordance with the operation history. By inferring and changing to a display form suitable for inference, information desired by the operator can be displayed, and determination of the state and operation of the plant can be easily and reliably supported.

[Brief description of the drawings]

FIG. 1 is a block diagram of a first embodiment of the present invention.

FIG. 2 is an explanatory diagram of the state map of FIG. 1;

FIG. 3 is an explanatory diagram of an example of a monitoring screen of FIG. 1;

FIG. 4 is a block diagram of a second embodiment of the present invention.

FIG. 5 is a block diagram of a third embodiment of the present invention.

FIG. 6 is a block diagram of a conventional technique.

FIG. 7 is an explanatory diagram of a conventional monitoring screen.

[Explanation of symbols]

 REFERENCE SIGNS LIST 100 operator 200 plant monitoring and control apparatus 500 plant 220 data processing unit 231 display control unit 232 state map display control unit 233 situation adaptation unit 236 state prediction unit 237 intention inference unit

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI theme coat ゛ (reference) G09G 5/00 510 G09G 5/00 510C F term (reference) 5C082 AA12 AA13 BA02 BA12 BD02 CB05 DA76 EA14 MM02 5C087 AA04 AA09 AA10 AA12 AA15 AA16 AA19 BB74 DD08 DD21 EE06 GG07 GG14 GG21 GG30 GG51 GG66 5E501 AC02 AC37 CA03 DA17 EA32 FA13 FA14 FA44 FB25 5H223 AA03 BB01 EE06 9A001 DD11 HH23 JJ61 KK54 LL09

Claims (3)

[Claims] 1. A plant monitoring and control device for controlling a plant in accordance with an operation of an operator and monitoring a monitoring signal of the plant, comprising: a display means for monitoring; and a plurality of monitoring signals in response to the monitoring signal. And a state map display control unit for judging support for displaying the change trajectory of the plurality of variables and the change of the operation mode of the plant or the timing of equipment operation on the display unit in a map with the variables as axes. A plant monitoring control device characterized by the above-mentioned. 2. The plant monitoring and control apparatus according to claim 1, further comprising a state predicting means for predicting a state of the variable in accordance with the monitoring signal and developing the predicted value on the map. Plant monitoring and control equipment. 3. A plant monitoring and control device for controlling a plant according to an operation of an operator and monitoring a monitoring signal of the plant, comprising: a display means for monitoring; A plant monitoring and control device, comprising: display control means for supporting a determination for changing a display mode of a plurality of variables of the monitoring signal.