JPH0445050B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention relates to a process display device for easily and clearly displaying the transient state of a nuclear power plant.

[Technical Background of the Invention] In order to safely operate a plant such as a nuclear power plant, it is necessary to monitor the process amount of each part of the plant, and a process display device is provided for this purpose. Currently, process display devices that are widely used employ a trend display to display transient data of a process. This trend display is characterized by the ability to display multiple pieces of process data on a single CRT screen according to the operator's instructions. Operators watch the ever-changing display data and make adjustments to optimize plant conditions.

[Problems with the Background Art] However, the trend data so far has had the following problems.

(1) The curve display showing the process amount and the auxiliary information explaining this graph were not displayed in a place where they could be seen at a glance, so the operator could immediately
It was difficult to judge the plant status from the graph at that time.

(2) Lines are displayed in different colors to show differences between multiple pieces of trend data, but this has the disadvantage that it becomes difficult to tell when printed in monochrome hard copy.

(3) When trend data was displayed overlapping, it was difficult to match the supplementary information with the curve.

(4) Furthermore, since lines can only be displayed as solid lines, (3)
If a black-and-white hard copy was taken in the condition, there was a problem that the plant condition was even more difficult to understand than in point (2).

For example, when starting up a nuclear power plant, as the start-up operation progresses, including the detection of neutron flux inside the reactor, the status of each equipment in the plant is checked, and the output, flow rate, and water vapor inside the reactor are checked. Operators need to accurately and quickly grasp the information necessary to start up a nuclear power plant, such as pressure and temperature, and prepare for the next operation. In this way, when operators need to accurately understand the constantly changing process status, if there is no trend display that allows them to instantly judge the process status, process operations will be seriously disrupted. Moreover, there is a risk that the operation will not be able to follow the process status, leading to a serious accident.

[Object of the Invention] An object of the present invention is to provide a process display device that allows an operator to immediately judge a plant state, facilitates plant operation management, and enables efficient plant operation.

[Summary of the Invention] Therefore, the present invention simultaneously displays a plurality of constantly changing plant process data on one screen according to instructions from an operator, and at this time,
The supplementary explanation and the latest data position are connected by a dynamically changing line segment (hereinafter referred to as the dynamic line), and the supplementary information is adjusted to the position (value size) of the process data so that this dynamic line does not cross. It is characterized by changing the order of explanation (hereinafter referred to as sorting).

[Embodiments of the Invention] Fig. 1 shows the configuration of a process display device according to the present invention, in which 1 is a nuclear power plant, 2 is a timer device that gives an instruction to input plant data at regular intervals, and 3 is a timer device that gives instructions to input plant data at regular intervals. is a process input/output device
The input/output device represented by PI0, 4 is a processing device, 5 is an output device that creates and outputs display data to be output to a display device based on the trend display information created by the processing device, and 6 is an output device. A display device typified by a CRT receives and displays display data from device 5, and 7 indicates an input device for inputting requests from an operator.

Further, in the arithmetic and control device 4, 41 is a data input processing section, 42 is a data storage section, 43 is a data collection processing section, 44 is a collected data storage section, 45 is a display data creation processing section, 46 is a display data storage section, 47 is a dynamic line data storage section, 48 is a display control section, 49 is a timer monitoring processing section, 4A is a dynamic line display processing section, 4B is a display item table, and 4C is a dialogue input processing section. The timer monitoring processing section 49 included in the processing device 4 calls the data input processing section 41 at temporary time intervals in response to an interrupt from the timer device 2. The called data input processing section 41 issues an input request to the input/output device 3.
The input/output device 3 that has received the input request handles various process quantities from the process input points of each part of the nuclear power plant 1.

The processing device 4 receives the process data taken into the input/output device 3 with a data input processing section 41,
The data is stored in the data storage section 42. Based on the instructions from the data input processing section 41, the data collection processing section 43 extracts only necessary data from the data stored in the data storage section 42 so as to display a trend as transient data, and sequentially stores it in the collected data storage section 49. do. In parallel with this, the dynamic line display processing unit 4A calculates coordinates indicating the latest data trend position from the data extracted for trend display by the data collection processing unit 43, and displays the dynamic line shown in FIG. 2c. Create display information. At this time, move to the old coordinates separately to erase the line. In addition, processing such as sorting the dynamic line information table in descending order of the latest data value is performed so that lines do not cross. Details of this processing will be described later. On the other hand, the plant data to be displayed as a trend is manually requested by an operator using a keyboard or the like and the input device 7. In the processing device 4, the dialog input processing unit 4C judges this input information and creates a display item table 4B. Returning to the beginning, the display data creation processing section 45 creates display data and a dynamic line from the display item table 4B created by the dynamic line display processing section 4A and the data stored in the collected data storage section 44. Supplementary information data is created and each display data storage unit 4
6. Store in the dynamic line storage section 47.
The display control section 48 sequentially takes out the data stored in the display data storage section 46 and outputs the data from the output device 5 to the display device 6 for display. At the same time, data is retrieved from the dynamic line storage section 47, the first dynamic line is drawn, and the sorted auxiliary information is displayed.

FIG. 2a shows the structure of the display item table 4B, in which "process item number", "trend display information", and "dynamic line display information" are collectively entered for each screen. Among these, the "process item number" is the process input point number, and as shown in Figure b, the process item numbers that should be displayed as trends in the same graph, and the lines for each of them. Contains the assigned curve number (this is assigned by the dialog input processing section 4C).
"Trend display information" refers to information necessary for creating a display screen, such as the display color, display area, and size (span) of the trend curve. "Dynamic line display information" is a table showing dynamic line supplementary explanation display information corresponding to each process item number for which a trend request has been made by an operator, as shown in FIG. The curve number is provided to provide a correspondence with the process item number, and the supplementary information contains supplementary information about the trend curve, such as the symbol of the process item number. Furthermore, it contains the position coordinates for drawing a dynamic line according to the latest data, and the position coordinates for erasing the previous dynamic line. This dynamic line display information table is sorted each time in descending order of the latest data in units of process item numbers.

Figure 3a shows the dynamic line display processing section 4.
The blocks necessary for A are extracted and their details are shown. FIG. 4a shows a flowchart of the process shown in FIG. The dynamic line display processing section 4A will be described below with reference to these figures.

First, the display item information extraction unit 4A1 takes out the display item table 4B and extracts dynamic line data display information 4A11. Second, the dynamic line display information creation unit 4A2 first initializes the number of repetitions (i=1) for creating all process points i 4A21. Next, in order to remember the previous coordinates as information for erasing the dynamic line corresponding to process point i,
The latest supplementary explanation coordinates (Xini, Yini) and the latest data position coordinates (Xdni, Ydni) are combined with the previous supplementary explanation coordinates (Xioi, Yioi) and the previous data position coordinates (Xdoi,
4A22 transferred to Ydoi). Then, 4A23 calculates the latest position coordinates (Xdni, Ydni) from the current latest process data i obtained from the data collection processing section 43 and sets them in the table. 4A24 further sets i to i+1 and prepares for creating the coordinates of the next process point. It is checked 4A25 whether all items have been completed for the process point to be displayed last, and if not, the process returns to step 4A22 for the next process point and is repeated until all items are completed. This process 4A
2, the coordinates on the data side for drawing the dynamic line are determined. Finally, the dynamic line display information sorting section 4A3
In order to determine the coordinates on the supplementary information side, sorting is performed in units of the latest supplementary explanation position and process item number based on the magnitude of the data values of all process points. First, 4A31 numbers the process data retrieved by display item information retrieval unit 4A1 in descending order of value. Next, 4A32 replaces the dynamic line display information table item by item in order of process data number. This is to sort the supplementary explanations so that the dynamic lines do not cross. At this time, if each item is replaced, the latest supplementary explanation position coordinates will be replaced as is, and this replacement will be meaningless, so only the latest supplementary explanation position coordinates will be left unchanged. The display item table thus created is passed to the display data creation process 45, and the dynamic line display processing section 4A is terminated. FIG. 5 shows an illustration of the invention. The display data creation processing section creates output data that can be displayed as a trend from this display item table, and stores it in the display data storage section 46 and the dynamic line data storage section 47.

FIG. 3b shows the details of blocks necessary for the display control section 48. The display control unit 48 will be described in detail below with reference to these figures.

First, in trend data display processing 481, the number of repetitions i for trending the latest data at all process points is initialized to i=1 (4811). next,
The trend information to be displayed on one screen (for example, display area position, display span, display color, etc.) is retrieved from the display data storage unit 46 (4812), and the older data is discarded in order to trend the latest data (screen Scroll left by 1 data, etc.) to clear the area (4813). Trend the latest data to this vacant area (4814). Here, i is i+
1 (4815) and checks whether the trend has ended for all process points (4816). If not, returns to trend data retrieval processing (4812). In this way, when the trend is completed for all process points, move on to the next step.

Second, dynamic line display processing 482 is performed. First, as described above, the number of iterations for drawing dynamic lines for all process points is initialized to i=1 (4821). Next, dynamic line information is retrieved from the dynamic line data storage section 47 (4822). After erasing the previous dynamic line (4823) to draw a new line, the dynamic line is created by outputting the two-point coordinates connecting the position coordinates of the current data i and the supplementary explanation position coordinates to the CRT control unit. Pull (4824). Here, i is set to i+ (4825), and it is checked whether dynamic lines have been drawn for all process points (4826). If not completed, return to the dynamic line extraction section (4822) and repeat until completed. In this way, once the dynamic lines have been drawn for all process points, the process moves on to the final process.

Finally, supplementary explanation display processing 483 is performed. First, as described above, the number of repetitions is initialized to i=1 (4831). Next, supplementary explanation display information is retrieved from the dynamic line data storage section 47 (4832). It is necessary to display sorted supplementary explanations so that they match the latest data curve. First, the supplementary explanation for the previous data is deleted (4833), and the latest supplementary explanation is displayed (4834). Here, let i be i+1 (4835), check whether supplementary explanations have been displayed for all process points (4836),
If the process has not been completed, the process returns to the supplementary explanation information retrieval process (4832) and is repeated until the process is completed.

When display control is performed for all process points in this manner, the display is outputted to the display device 6 via the output device 5.

[Effects of the invention] (1) Since it is possible to see at a glance which monitoring point the trended data corresponds to, immediate judgment can be made easily and the load on plant operators can be reduced.

(2) Color of trend data and dynamic line,
Alternatively, by making the color of the trend data and the supplementary explanation the same, it is possible to judge the magnitude relationship of the data when the trend data overlap.

(3) Data identification becomes easier even when data is collected using monochrome hard copies.

(4) By changing the trend data and dynamic line type for each process point, it becomes easier to identify monochrome hard copies.

As a result of the above effects, operators can easily judge the plant status and monitor and control processes safely and efficiently.

[Brief explanation of drawings]

Fig. 1 is a functional block diagram of a process display device according to an embodiment of the present invention, Fig. 2 a, b, and c are explanatory diagrams of a display item table, and Fig. 3 a is a detailed diagram of a dynamic line display processing section. FIG. 3B is a detailed explanatory diagram of the display control unit, FIGS. 4A and 4B are flowcharts of the processes in FIGS. 3A and B, and FIG. 5 is a specific example of the dynamic line display process. FIG. 1... Nuclear power plant, 2... Timer device, 3... Input/output device, 4... Processing device, 5...
Output device, 6...Display device, 7...Input device, 4
1... Data input processing unit, 42... Data storage unit, 43... Data collection processing unit, 44... Collection data storage unit, 45... Display data creation processing unit, 4
6...Display data storage unit, 47...Dynamic line storage unit, 48...Display control unit, 49...Timer monitoring processing unit, 4A...Dynamic line display processing unit, 4B...Display item table, 4C...
...Dialogue input processing section.

Claims (1)

[Claims] 1. In a process display device that simultaneously displays a plurality of trend curves of process data obtained from each part of a plant on the same screen, means for connecting a supplementary explanation of the trend curve and the latest data position of the trend curve with a line segment; and means for changing the order of the supplementary explanations in accordance with the position of the latest data so that the supplementary explanations do not cross each other.