JPS6015512A - Plant monitor and display - Google Patents

Abstract

PURPOSE:To facilitate trouble shooting and analysis for an abnormality by installing in an operating apparatus a means for detecting an abnormality based upon plant data and performing redisplay in response to request for an image redisplay by maintaining necessary data required for the image display at the time when an abnormality occurs. CONSTITUTION:An input apparatus 2 takes in data from on atomic plant 1 which become objects of diagnoses and watchings and delivers them to an operating apparatus 3. An operating panel 4 delivers an image selecting command to be displayed on display apparatus 5 and copying apparatus 6. An input processing member 31 of the apparatus 3 describes input data in an input data preserving area to renew the data. A plant abnormality detecting member 33 takes out data related to the abnormality from the area 32 to detect the abnormality. A picture data maintain-processing member 35 takes out such data as required for a CRT display from data described in the area and stores them in a picture data maintaining area 36 in due order. A redisplay picture data maintaining member 37 processes in response to an information from detecting member 33 or CRT function select-processing member 34. Thus, trouble shooting and analysis at the time of abnormality can be done with ease.

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention relates to a plant monitoring and display device that is convenient for later investigation and analysis of the cause in the event that a plant abnormality occurs.

[Technical Background of the Invention] Generally, plant monitoring and display devices capture various plant data from various parts of the plant, display alarm data,
It is classified and organized according to various display formats such as process amount trend display, system diagram display, etc., and is incorporated into the above display format information stored in advance and displayed on the CRT screen in response to a screen selection display request from the operator. It is composed of

At this time, the various plant data taken in from each part of the plant are updated and stored in the device's memory each time, or even if they are stored, at most, the data for trend display is stored and stored only for a certain period of time necessary for it. However, it is impossible to store the data necessary for analysis after a plant abnormality for a long period of time due to the amount of process information that is taken into the equipment every moment and the memory capacity to store it. .

For this reason, conventionally, data that needed to be saved was retrieved and saved as a hard copy via a hard copy device such as a dot printer attached to the CRT.

[Problems with Background Art] However, hard copies cannot be obtained unless they are being displayed on a CRT. On the other hand, the CRT display screen is updated every moment after a plant abnormality occurs. For this reason, when an abnormality occurs in the plant, the operator is in a hurry to restore the plant to normality, and there is no time for hard copies.

In this way, in conventional plant monitoring and display devices,
It is difficult to save plant data as a hard copy when a plant abnormality occurs, and to investigate and analyze the cause of a plant abnormality, the plant status at that time must be captured in a CR later.
It was completely impossible to display it on T.

[Object of the Invention] In view of the above-mentioned points, it is an object of the present invention to provide a plant monitoring and display device that can reliably store necessary plant data and reproduce past plant conditions on a CRT.

[Summary of the Invention] Therefore, the present invention stores CRT screen display data in various display formats in a storage device in response to detecting an abnormality in a plant or in response to a screen storage request from an operator. When a screen redisplay request is made, C
The feature is that it is displayed and output on RT.

[Embodiment of the invention] 6 The present invention will be described below with reference to embodiments shown in the drawings.

FIG. 1 shows a configuration diagram of a plant monitoring and display device according to an embodiment of the present invention, in which numeral 1 indicates a nuclear power plant to be diagnosed and monitored. 2 is an input device for importing various plant data from the plant 1; 3 is an arithmetic processing unit for displaying and processing the plant data taken in through the input device 2; 4 is an alarm data display, a system diagram display, and a process amount display. An operation panel has various display function selection buttons for selecting a display screen such as a trend display, as well as for requesting screen saving, 2 screen redisplay, etc. 5 is a CRT display device, only one of which is shown in the figure. However, there are usually several. 6 is a hard copy device for converting the display screen of the CRT display device 5 into a hard copy.

Further, the arithmetic processing unit 3 includes an input processing section 31, an input data storage area 32, a plant abnormality detection section 33, a CRT function selection processing section 341, a screen data storage processing section 35, a screen data storage area 36, a redisplay screen data storage processing 37, a screen redisplay data storage area 38, and a CRT display/redisplay processing section 39.

With the above configuration, the input processing section 31 in the arithmetic processing device 3
writes the plant data input from the input device 2 into the input data storage area 32 of the storage device, and updates the previously written data.

Next, the plant abnormality detection unit 33 detects the input data storage area 3.
2, extracts data related to plant abnormality from the data written in
For example, an abnormality is detected using the logic of a nuclear reactor scram as shown in FIG. Note that 3 in Figure 2
Reference numeral 31 indicates OR logic, and 332 indicates AND logic, in which reactor scram is determined by AND of scram factors A and B.

Furthermore, the scram factors A and B are made up of a logical set of individual abnormal elements, such as lower-level elements such as a low reactor water level.

On the other hand, the CRT function selection processing section 34 performs processing as shown in FIG. 4 in response to an operator's request issued via the operation panel 4.

That is, if the screen save request button on the operation panel 4 is pressed,
The contact information is received and judged through the input device 2 (b), and a request to save the screen currently displayed on the CRT display device 5 is notified to a re-display screen data storage processing 37, which will be described later. Similarly, if there is a re-display screen request from the operation panel 4 (c), the previously saved screen number is retrieved (2), and the re-display request for the screen with that number is sent to the CRT surface/re-display processing section 39 (described later). Notify (e). On the other hand, if there is a normal screen selection display request from the operation panel 4, the screen number of the CRT corresponding to that selection button is determined.
The CRT surface/redisplay processing section 39 is notified of the surface request for the screen of that number (H).

The screen data storage processing section 35 stores the input data storage area 32
By extracting the data necessary for the CRT display screen from the data written to the CRT display screen and sequentially storing it in the screen data storage area 36, the data used on the CRT display screen from the current time to a specified time in the past can be stored in the screen data storage area 36. Save to.

The redisplay screen data storage processing section 37 performs the processing shown in FIG. 4 in response to notifications from the plant abnormality detection section 33 or the CRT function selection processing section 34.

That is, as described above, when a screen save request is issued from the CRT function selection processing section 34, the corresponding screen data is retrieved from the screen data storage area 36 and saved in the screen redisplay data storage area 38. Do (ha). on the other hand,
When a plant abnormality is notified from the plant abnormality detection unit 33 as described above, the counter i is set to 1, and a timer is set to determine when to save the screen with the set number. Set (to).

That is, as described above, since the screen data storage area 36 stores screen data from the present to the past for a certain period of time, the screen data storage area 3
If you extract the screen data from 6.

This is not desirable because only the screen data before the plant abnormality is retrieved. For later plant abnormality analysis, it is important to collect data just before and after the plant abnormality occurs. For this purpose, it is necessary to retrieve the screen data from the screen data storage area 36 some time after the plant abnormality occurs, and the timer is set for this purpose. Also,
The set time at this time differs because each screen is at a different point in time when it is most suitable for plant abnormality analysis.

Next, in order to set the timer for the primary screen, the counter i is incremented by 1 (and), and this process is repeated, and when the timer setting is completed for all screens that can be selected on the operation panel 4 (c), After a short time, counter i
Set the timer to 1), and then check in order from screen 1 whether the previously set timer of one hour has elapsed. As a result, if there is any screen data for which the timer set time has elapsed, the corresponding screen data is retrieved from the screen data storage area 36) and stored in the CRT display/re-display processing section 39 (
circle). Next, in order to check the timer setting time elapsed for the next screen, the counter i is incremented by 1 (or), and after checking the entire screen -, by repeating the above process, Terminate the timer processing.

If this causes a plant abnormality.

The plant data corresponding to each screen is retrieved screen by screen from the screen data storage area 36 and stored in the screen redisplay data storage area 38 after a necessary fixed period of time, that is, at the optimal timing as plant abnormality data for each screen. Ru. Further, when a screen save request is issued from the operation panel 4, the screen data currently being displayed on the CRT display device 5 is taken out from the screen data storage area 36 and saved in the screen redisplay data storage area 38.

The CRT display/redisplay processing unit 39 performs the processing shown in FIG. 5 in response to a screen redisplay request issued by the operator from the operation panel 4 or a normal screen selection display request.

That is, first, in order to check what kind of display request is issued for each screen, counter j is set to 1 (
,).

Next, if the display request issued for that screen is a redisplay request (b), and if it has not been displayed yet (c), display data of the fixed part for that screen, for example, the system diagram. In the case of a screen to be displayed, data representing symbol marks of valves, pumps, piping, various pressure parts, thermometers, etc. necessary for displaying the system diagram is retrieved from a pre-stored memory (without drawings) and displayed on a CRT. It is output to the display device 5 (d).

Next, the variable part data for that screen, for example,
When the screen is the above system diagram, the data such as the opening/closing status of the valve, the operating status of the pump, the scale position of the meter, etc. is retrieved from the screen re-display data storage area 38 and displayed in combination with the data of the fixed part described in 2. Therefore, it is output to the CRT display device 5 (f).

On the other hand, if the display request issued for that screen is a normal screen selection display request (g), the display data of the fixed part for that screen is retrieved from the memory and
It is output to the display device 5 (h). Subsequently, the display data of the corresponding variable portion is retrieved from the screen data storage area 36 (j) and output to the CRT display device 5 (k).

Next, the counter 1 is incremented by 1 (Ω) and the above process is repeated to process the display request for the entire screen (DI), and the process of the CRT display/redisplay processing unit 39 is ended.

The CRT display device 5 completes a display screen by combining the display data of the fixed part and the variable part for each screen output from the CRT display/re-display processing section 39, and displays the data sequentially on each CRT. At this time, the number of CR1 units is less than the number of screens j, so in the case of resurfacing at the time of a plant abnormality, the processing unit 3 is notified when the number of screens for the total number of CRT units is displayed, and once more screens are displayed. The output is stopped, and based on the operator's instructions from the operation panel 4, the remaining screens are displayed while erasing unnecessary screens.

In this way, if a plant abnormality occurs, the screen collected at the optimal timing for later analysis is saved in the screen redisplay data storage area 38, and the necessary data is saved while monitoring the CRT display device 5. By saving the screen redisplay data in the data storage area 38, displaying it later on the CRT display device 5, and further taking out the necessary items as hard copies from the hard copy device 6, it is possible to investigate and analyze the cause of plant abnormalities or during operation. This makes it easier to analyze phenomena that occur.

In the above embodiment, when a screen save request is issued from the operation panel 4, only the screen data currently displayed on the CRT display device 5 is moved from the screen data storage area 36 to the screen redisplay data storage area 38 and saved. However, similar to the data storage process when a plant abnormality occurs, all screen data that can be selected from the operation panel 4 is moved from the screen data storage area 36 to the screen redisplay data storage area 38 and saved, and if you want to redisplay it, you need to operate Only necessary screen data may be sequentially displayed on each CRT of the CRT display device 5 according to the operator's selection via the panel 4.

Furthermore, although the above embodiments have been described using an example in which screen data is displayed on a CRT, the display device is not limited to a CRT, and any suitable display device such as a liquid crystal display or an EL display can be used.

[Effects of the Invention] As described above, according to the present invention, when a plant abnormality occurs or a screen storage request is made, necessary screen data is saved and can be freely selected and displayed later. Investigation and behavior analysis will be easier than before.

[Brief explanation of drawings]

FIG. 1 is a block configuration diagram of a plant monitoring and display device according to an embodiment of the present invention, FIG. 2 is an explanatory diagram showing an example of plant abnormality judgment logic, and FIG. 3 is a block diagram of the CRT function selection processing section of FIG. 1. FIG. 4 is a flowchart for explaining the functions of the redisplay screen data storage processing section in FIG. 1, and FIG. 5 is a flowchart for explaining the functions of the CRT display and redisplay processing section in FIG. 1. It is a flow chart for explanation. 1... Nuclear power plant, 2... Input device, 3...
... Arithmetic processing unit, 4... Operation panel, 5... CRT display device, 6... Hard copy device, 31... Hexagonal processing unit, 32... Input data storage area, 33... Plant abnormality detection unit, 34...CRT function selection processing unit, 3
5... Screen data storage processing section, 36... Screen data storage storage area, 37... Redisplay screen data storage processing section, 38... Screen redisplay data storage area, 39...C
RT display/redisplay processing unit, 331...OR logic, 33
2...AND logic.

Claims (1)

[Scope of Claims] (1) At least an input device that inputs data from each part of a plant, an arithmetic processing device that displays and outputs plant data inputted through this input device, and this arithmetic processing device. A plant monitoring and display device comprising a display device that displays a screen based on display data output from the display device, and an operation panel that issues a screen selection instruction to the arithmetic processing unit in order to cause the display device to display a screen necessary for monitoring. , the operation panel is provided with an operation key for issuing at least a screen redisplay request, and the arithmetic processing unit includes means for detecting an abnormality in the plant based on the plant data; when the plant data is displayed on the screen, a means for saving the data necessary for screen display from the plant data at a predetermined timing, and a means for extracting the saved screen data in response to the screen redisplay request and outputting it as the display data, A plant monitoring and display device characterized by displaying on a screen the status at the time of a plant abnormality. (2. In claim 1, an operation key for issuing a screen save request is added to the operation panel, and the arithmetic processing unit further includes screen display data at that time in response to the screen save request. A plant monitoring and display device characterized by adding means for extracting and saving the data from the plant data, and extracting and displaying the saved screen display data on the display device in response to the screen redisplay request. (3) Patent A plant monitoring and display device according to claim 1 or 2, further comprising a hard copy device for printing a screen displayed on the display device.