JPH04253093A - Screen selection device - Google Patents

Abstract

PURPOSE:To reduce the labor of an operator who selects a picture and to improve plant monitoring performance and reliability by showing several candidates for current suitable pictures to the operator according to various plant states and operation states. CONSTITUTION:The screen selection device is equipped with a plant data input part 2 which receives a plant data signal, a screen display condition table memory 9 stored with a screen display condition table 9a wherein display conditions are entered, picture by picture, an evaluation index calculation part 8 which calculates an evaluation index used to determine the priority of displays by the pictures from the display conditions in the screen display condition table according to the plant data from the plant data input part, an evaluation index table memory 10a stored temporarily with the calculated evaluation index, a display screen control part 11 which selects a picture to be displayed actually in response to a request signal from a selection switch 12 while determining the priority of the pictures to be displayed according to the evaluation index of each picture in the evaluation index table, and a screen display part 6 which displays the picture selected by the display screen control part on a screen display device.

Description

[Detailed description of the invention]

[Object of the invention]

0002

[Industrial Field of Application] The present invention relates to an optimal screen selection device for use in a process plant having a large number of equipment such as a nuclear power plant, and in particular, the present invention relates to a screen selection device that is optimal for use in a process plant having a large number of equipment such as a nuclear power plant. (Cathode
The present invention relates to a screen selection device that displays on a screen display device such as a Ray Tube (Ray Tube) display.

0003

[Prior Art] In recent years, in order to improve plant monitoring performance in plant processes such as nuclear power plants, screen display devices such as CRT displays that utilize computer technology have been actively used, replacing conventional plant monitoring with instruments. Things are changing. In plant monitoring using such screen display devices, there are many types and numbers of screens displayed on the screen display device. A major challenge for screen selection devices is how to easily and quickly select items from among the screens.

[0004] As one measure against this, it is common practice to automatically display a screen to be monitored when a predetermined event occurs.

FIG. 3 is a block diagram showing the configuration of the part that automatically displays the screen in a conventional general screen selection device. In the figure, a computer 1A is equipped with a plant data input section 2 that takes in plant data such as pressure and temperature, and based on the plant data from the plant data input section 2, an event detection section 3 detects an event. It is detected whether an event (for example, a turbine trip, a nuclear reactor scram, etc.) that is registered in the event/display screen correspondence table memory 4 that stores the display screen correspondence table 4a has occurred in the plant. When the registered event occurs, the display screen selection unit 5 is notified of the event, and the display screen selection unit 5 automatically displays the event corresponding to the event based on the event/display screen correspondence table 4a. The screen to be displayed is selected and notified to the screen display unit 6, and the screen display unit 6 automatically displays the screen on a screen display device 7 such as a CRT display.

Here, the event/display screen correspondence table 4 is shown.
a is configured as shown in FIG. 4, for example. That is,
For preselected events, the display screen most needed for plant monitoring when the event occurs is compared and registered for each event.

[0007]

[Problems to be Solved by the Invention] However, in the conventional screen selection device, the event/display screen correspondence table 4
A screen corresponding to the event registered in advance in a is displayed on a screen display device 7 such as a CRT display by a screen display unit 6.
The system was designed to automatically display the following information, which caused the following problems.

[0008] Unless an event can be clearly identified, it is not automatically displayed on the screen and lacks flexibility.

[0009] When a plurality of events occur almost simultaneously, a screen suitable for the event that occurred last is automatically displayed, so that screens suitable for other events cannot be presented to the operator.

[0010] ■ A huge number of other screens that are not registered in the event/display screen correspondence table 4a are not automatically displayed, making it impossible to effectively utilize the screens.

[0011] If we try to increase the number of target events and automatically display the appropriate screen each time for various plant conditions in order to deal with the above problem (2), the above problem (2) will occur. The probability of occurrence increases. Furthermore, if you try to increase the number of display screens for events in order to deal with the above problem (■), you will need as many screen display devices as that number, and in real plants, plant monitoring is performed using a finite number of screen display devices. It's not realistic because it's happening.

[0012] The present invention has been made in consideration of the above circumstances, and its purpose is to present to the operator several screen candidates suitable at each time, depending on various plant conditions and operating conditions. This aims to reduce the labor required by operators when selecting screens and improve plant monitoring performance and reliability. [Structure of the invention]

[0013]

[Means for Solving the Problems] In order to achieve the above object, a screen selection device according to the present invention includes a plant data input section that receives a plant data signal, and a screen display condition table in which display conditions are described for each screen. Based on the stored screen display condition table memory and the plant data from the plant data input section, calculate an evaluation index used to determine display priority for each screen from the display conditions of the screen display condition table. an evaluation index calculation unit that temporarily stores the calculated evaluation index; an evaluation index table memory that temporarily stores the calculated evaluation index; and an evaluation index table memory that determines the priority of screens to be displayed based on the evaluation index for each screen on this evaluation index table, and The display screen management section includes a display screen management section that selects a screen to be actually displayed based on a request signal from a switch, and a screen display section that causes a screen display device to display the screen selected by the display screen management section.

[0014]

[Operation] When a plant data signal is input to the plant data input section, the evaluation index calculation section calculates the evaluation index for each screen based on this plant data according to the display conditions listed in the screen display condition table. Calculated in .

[0015] Then, in the display screen management section, the priority of the screens to be viewed for monitoring the current plant is determined from the evaluation index, the prioritized display screen candidates are presented, and among these display screen candidates, Using the selection switch, plant operators can easily select a screen suitable for the plant situation. As a result, the operator is presented with several suitable screen candidates according to various plant conditions and operating conditions, reducing the operator's effort when selecting a screen, and as a result, the plant Monitoring performance and reliability can be improved.

[0016]

Embodiments Hereinafter, embodiments of the present invention will be described with reference to the drawings.

FIG. 1 is a block diagram showing the configuration of a screen selection device according to an embodiment of the present invention. In addition, in Figure 1,
Components that are the same as those in the conventional example shown in FIG.

The calculator 1 in the screen selection device of this embodiment is provided with an evaluation index calculation section 8, and this evaluation index calculation section 8 includes a screen display condition table memory 9 that stores a screen display condition table 9a. is connected.

For example, as shown in FIG. 2, the screen display condition table 9a lists the screen display conditions that reflect the design intention of the plant situation in which the screen should be used, along with the display priority for each display condition. It is described for each screen. For example, if the priority is expressed as a value between 0 and 1, and the closer the value is to 1, the higher the priority, then the display conditions for a certain screen are described as follows.

[0020] if reactor water level<L3, then priority=0.7 if reactor water level<L2, then priority=0.8 if pump A operation, then
Priority = 0.3 Although this example shows a description using the if-then rule, logical expressions using and, or, etc., or those with ambiguity such as the reactor water level being low are shown. Of course, other expressions may also be used.

The evaluation index calculation section 8 calculates a screen display condition table 9 based on the plant data from the plant data input section 2.
The display conditions described in a. are evaluated for each screen, for example, the maximum priority of each screen is determined, and this is used as an evaluation index that indicates how useful that screen is for plant monitoring. The index is written into the evaluation index table memory 10 and temporarily stored.

[0022] The display screen management unit 11 connected to the evaluation index table memory 10, based on the evaluation indexes from the evaluation index table 10a, displays the results in descending order of evaluation indexes, for example.
Screen display unit 6 prioritizes screens that are useful for plant monitoring in the current plant state and displays screens to be displayed.
The information is then displayed on the screen display device 7. A selection switch 12 is connected to this display screen management section 11 .

[0023] As an example of how the display is developed, first the highest priority screen is displayed, and based on this, the operator selects a display switching request such as "next candidate" or "previous candidate" from the selection switch 12. , a method of sequentially displaying screens in descending or ascending order of priority, and a display screen management unit 11
There is a method in which a menu of screens is displayed on the screen display device 7 via the screen display unit 6 in descending order of priority, and the operator directly selects the screen to be displayed using the selection switch 12.

That is, according to the screen selection device of this embodiment, in the evaluation index calculation section 8, the plant data input section 2
Based on the plant data input from , an evaluation index for each screen is calculated according to the display conditions listed in the screen display condition table 9, and the display screen management section 11 calculates the evaluation index for each screen based on the evaluation index for monitoring the current plant. Since the priority of the screens to be displayed is determined, the plant operator can easily select a screen suitable for the plant situation from among the prioritized display screen candidates using the selection switch 12.

Therefore, unlike conventional screen selection devices, it is not necessary to clearly accompany events, and even when multiple events occur almost simultaneously, screens can be presented to the operator in order of importance. All the screens the system has can be used effectively to reflect the design intent.
The burden on the operator when making screen selections can be significantly reduced compared to the conventional method.

[0026]

As explained above, in the present invention, the evaluation index calculation section calculates the evaluation index for each screen according to the display conditions described in the screen display condition table based on the plant data, and the display screen management section calculates the evaluation index for each screen based on the plant data. In order to determine the priority of screens to be viewed for current plant monitoring from the evaluation index,
From among the prioritized display screen candidates, the plant operator can easily select a screen suitable for the plant situation using the selection switch.

[0027] In other words, it is possible to present to the operator several suitable screen candidates at each time in accordance with various plant conditions and operating conditions, thereby reducing the operator's effort when selecting a screen. As a result, it is possible to improve plant monitoring performance and reliability.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing the configuration of an embodiment of the present invention.

FIG. 2 is an explanatory diagram showing an example of a screen display condition table in FIG. 1;

FIG. 3 is a block diagram showing a conventional example.

FIG. 4 is an explanatory diagram showing an example of an event/display screen correspondence table in FIG. 4;

[Explanation of symbols]

1. Calculator 2　Plant data input section 6 Screen display section 7 Screen display device 8 Evaluation index calculation section 9 Screen display condition table 10 Evaluation index table 11 Display screen management department 12 Selection switch

Claims (1)

[Claims] 1. A plant data input section that receives plant data signals, a screen display condition table memory that stores a screen display condition table in which display conditions are described for each screen, and a plant data input section that receives plant data signals based on the plant data input section. an evaluation index calculation unit that calculates an evaluation index used to determine the priority order for displaying each screen from the display conditions of the screen display condition table; and an evaluation index table that temporarily stores the calculated evaluation index. A display screen management unit that determines the priority of the screens to be displayed based on the memory and the evaluation index for each screen on this evaluation index table, and selects the screen to be actually displayed based on the request signal from the selection switch. , and a screen display section that causes a screen display device to display the screen selected by the display screen management section.