JP2002062931A - Plant monitoring device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To automatically adapt the display range of a trend graph to the fluctuating width of a plant monitoring parameter in the display of the parameter by trend information. SOLUTION: This plant monitoring device for reading a plant state and displaying the trend information for the plant monitoring parameter comprises a display range judgment processing part 102 for reading the display magnification stored in a range set information storage part 105 from a range set changing processing part 104 for changing the maximum/minimum value and magnification of a plant data collected by a trend data collecting processing part 3, and judging the presence of change of the set range; a display range changing processing part 103 for determining the vertical limit range that is the display range of the plant data; and a data display device 7 for displaying the plant data within the display range set by the display range changing processing part.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a plant monitoring device for monitoring an operation state of a plant, and more particularly, to a plant monitoring device for displaying operation parameters in a trend graph to monitor operation.

[0002]

2. Description of the Related Art Conventionally, in a nuclear power plant or a thermal power plant, parameters to be monitored are registered in advance in order to be able to continuously monitor the operating state of the plant, and these are registered in a CRT display device or the like. Has a plant monitoring system that displays a trend graph. This includes displaying plant monitoring parameters such as process data such as pressure, flow rate and temperature, and device status data such as valve opening on the same screen by color-coding with multiple trend curves, and arranging multiple trend graph screens. There is a method to display. These trend information display range setting methods are disclosed in Japanese Unexamined Patent Publication No. Hei 6-309140.
There is a method of sliding a range bar while viewing the change window screen disclosed in JP-A-63318, a method of setting upper and lower limits by numerical input operation, a method of setting by specifying a magnification, and the like. Also, JP-A-11-1
No. 60105 discloses a trend graph line type (thick line, dotted line) without changing the upper / lower limit range of the trend graph display.
Discloses a method for distinguishing whether or not the range is over.

[0003]

In monitoring a plant, it is important to understand how a plant monitoring parameter changes and its behavior, which can be handled by a conventional trend graph display. is there. However, the conventional method has the following disadvantages. (1) When newly registering a monitoring parameter, it has been difficult to set the upper and lower limits of the display range suitable for the fluctuation range of the parameter from the beginning. That is, FIG.
As shown in FIG.
When the registered data is displayed in a trend graph, the trend data does not exceed the upper and lower limits of the display range (upper limit of 100.0 in FIG. 12) and does not exceed the upper and lower limits. May be displayed in a small range, and it may not be possible to read subtle movements. In order to properly display this trend graph without exceeding the upper and lower limits, it is necessary to repeatedly set the display range 207 by trial and error many times by manual operation. In this case,
The operation is troublesome, and the registration / change processing of the display range takes time. In addition, in the conventional method, when the display range initially set by the plant monitoring parameters is later changed to the actual state due to a change in the plant operation status or the like,
It is necessary to set the display range again by a manual operation, and the same disadvantages as described above occur. (2) When displaying a plurality of trend graphs on the same time axis, the graphs may intersect, approach or overlap with each other, making it difficult to identify each other, which may hinder operation monitoring.

A first object of the present invention is to solve the above-mentioned problem (1) by displaying a plant monitoring parameter in trend information by adjusting a display range of the trend graph according to a fluctuation range of the parameter. An object of the present invention is to provide a plant monitoring device suitable for automatically adapting. Further, a second object of the present invention is to solve the above-mentioned problem (2), in a trend information display for displaying a plurality of trend graphs on the same time axis, where trend lines intersect, approach, or overlap. Even if it becomes difficult to identify the trend lines, it is an object to provide a plant monitoring device suitable for easily identifying a trend line to be monitored by a simple operation.

[0005]

In order to solve the above-mentioned first problem, a display range determining means for taking in the maximum / minimum values of plant data and a display magnification and determining whether or not a set range has been changed, The display device includes a display range changing unit that determines an upper and lower limit range that is a display range of plant data, and a data display unit that displays plant data within the display range set by the display range changing unit. Further, in order to solve the second problem, a means for temporarily erasing and specifying an arbitrary trend line among a plurality of trend graphs displayed on the same time axis, and a trend designated by the erasing and specifying means. A trend line erasing means for temporarily excluding the graph from the display is provided.

[0006]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 shows an embodiment of the plant monitoring device of the present invention. In FIG. 1, a plant monitoring device includes a process input device 1 for receiving input signals from various parts of a plant, a data input processing unit 2 having an input / output function for various signals, and a trend data collection processing unit 3 for collecting monitoring trend data. , An operator request processing unit 6 for receiving a trend display request from an input device such as a keyboard 8 and a mouse 9, a trend display setting unit 100 for setting a trend display type, a trend display request processing unit 5 for performing a trend display request, and a display request. It comprises a trend display processing unit 4 for displaying a trend within the display range set by the display range change processing unit 103, and a display device 7 for displaying trend information data. The trend display setting unit 100 includes a range setting type determination processing unit 101 that determines a range setting type, a maximum / minimum value of data collected by the trend data collection processing unit 3, and a display stored in the range setting information storage unit 105. A display range determination processing unit 102 that takes in a magnification and determines whether or not a set range has been changed, a display range change processing unit 103 that determines an upper and lower limit range that is a display range of trend information, a range setting type, and a display magnification are changed Setting change processing unit 104 to perform, range setting change processing unit 104
A range setting information storage unit 105 for storing the setting information changed in the above step, and a trend line deletion processing unit 106 for temporarily deleting the trend line.

Next, the operation of the plant monitoring device will be described. In the present embodiment, the range of the trend display can be set in three types: (a) initial display setting, (b) automatic change, and (c) manual change. Hereinafter, each setting type will be described. First, "initial display setting" is a setting type when a range setting at the time of trend display item registration has not been performed yet, and is a type for performing initial setting of a range. This “initial display setting” is selected by default. Next, “automatic change” is a setting type for performing an optimum range setting every time a trend display request is made, that is, every time a trend screen is displayed. The "manual change" is based on the same technology as the conventional one, and manually changes the display range by inputting numerical values.

FIG. 2 shows a processing flow for displaying trend information in the present embodiment. Here, steps S1 and S2 are the range setting type determination processing section 101, and steps S3 and S4.
5 is executed by the display range determination processing unit 102, and step S7 is executed by the trend display request processing unit 5. When the operator request processing unit 6 receives a trend display request,
First, the setting type is fetched in step S1, and the setting type is determined in step S2. If the result of the determination is that “initial display setting” has been selected, it is determined in step S3 whether or not the range has been set. If the range has not been set or “automatic change” has been selected in step S2, the maximum / minimum values of the data are fetched from the trend data collection processing unit 3 in step S4, and the range setting information storage unit in step S5. After the display magnification is acquired from 105, the display range is set in step S6. If “manual change” is selected in step S2 or if the display range is set in “initial display setting”, the trend graph
7, a trend screen is displayed based on the upper and lower limit ranges that have already been set. In this embodiment, at the time of the first trend graph display request, as shown in FIG. 4, the range setting type is configured such that the initial display setting 203 is automatically selected and the range setting is automatically performed. .

Next, a method for setting a range when a trend graph display is requested and a method for manually changing a range will be described. FIG. 3 shows a processing flow when the range setting is changed according to the present embodiment. Here, step S10
Reference numerals 0, 101, 102, 107, and 108 denote a range setting change processing unit 104, steps S103 and 109 include a range setting information storage unit 105, step S104 denotes a display range determination processing unit 102, and step S105 denotes a range setting information storage unit 105. S106 is the trend display request processing unit 5
Respectively. 4 and 5 show examples of the range setting at the time of displaying the trend graph. FIG. 4 shows a display example of the trend graph by the range initial display setting, and FIG. 5 shows a display example of the trend graph by the automatic range change. Hereinafter, a method of changing the range setting at the time of displaying the trend graph will be described with reference to FIGS. Range setting button 201
Is selected with the mouse 9 or the like, a range setting change screen 202 is displayed on the trend graph 200 in step S100. In the range setting change screen 202, setting types that can be selected by the operator are displayed. Step S1
When the initial display setting 203 or the automatic change 301 is selected in 01, a display magnification selection process is executed in the next step S102. An arbitrary magnification can be selected from the display magnification selection areas 205 and 303. Next, step S1
03, the setting request command causes the above-described step S10
The setting type and display magnification selected in step 2 are determined here,
In step S104, the maximum / minimum value of the collected data is fetched from the trend data collection processing unit 3. In step S105, the upper / lower limit range 207 is automatically set based on the maximum / minimum value. In step S106, The trend graph is displayed again. Step S1
When the setting is changed to the automatic change 301 in 01, the display range is automatically set each time a trend display request is made. When the manual change 305 is selected in step S101, in step S107, the upper and lower limit range input area 30 is set.
The set value is displayed in 6. In step S108, the changed value is input to the input area 306. In step 109, the setting type selected by the setting request command and the input changed value are determined. In step 106, the trend graph is redisplayed with the changed range width. Is done.

As shown in FIG. 4, when the initial display setting 203 is selected, range registration is performed at the first display request after trend item registration. The display magnification 204 can be arbitrarily selected from the display magnification selection area 205, and enlargement / reduction display of display data is also possible. Display magnification 204 is 1
When it is larger than 00%, the display is enlarged, and when it is smaller, the display is reduced. By specifying the display magnification 204 to be equal to or less than 100% and reducing the display, it is possible to allow a wider range width. This initial display setting is effective for the initial upper and lower limit range registration after the trend item registration.

FIG. 5 shows a setting example when the automatic change 301 is selected on the range setting change screen 202. Display magnification 3
02 is the same as the initial display setting 203,
Here, since the display magnification 302 is set to 90%, the trend graph 304 is reduced to 90%. Also,
When the automatic change 301 is selected, every time the trend screen is displayed, the upper / lower range 207 is set from the maximum / minimum value of the data.
This is effective when the display data exceeds the upper / lower limit range 207, when the fluctuation range of the data cannot be predicted, or when a short-term data fluctuation is monitored such as during a test.

In addition to the setting method on the range setting change screen 202, a range reset button 208 is displayed on the trend screen.
Is provided, the range of the displayed trend graph can be changed. That is, when the range reset button 208 is selected with the mouse 9 or the like, display with the reset range width becomes possible. In this case, the operation of the operator is required, but the operation is only the selection of the range reset button 208, which is an extremely simple operation as compared with the conventional change operation.

FIG. 6 shows a range reset button 20 according to this embodiment.
8 shows a processing flow when 8 is selected. Here, step S20
0 and 201 are a range setting type determination processing unit 101, steps S202 and 203 are a display range determination processing unit 102, step S204 is a display range change processing unit 103, and step S
205 is executed by the trend display request processing unit 5. When the range reset button 208 on the trend screen is selected, the range setting type is fetched in step S200, and in step 201, it is determined whether or not the range setting has been changed. Only when the setting type is the initial display setting 203 or the automatic change 301, in step S202, the maximum / minimum value of the collected data is fetched from the trend data collection processing unit 3 in the same manner as the range setting method described above. In rare cases, the display magnification is fetched from the range setting information storage unit 105 in step S203, the range is set in step S204, and the displayed trend graph is displayed again in step S205. The range change by the range reset button 208 uses the range setting type and the display magnification set on the range setting change screen 202. When the range setting type is “initial display setting”, the upper and lower limits registered at the time of initial display are changed. In the case of "automatic change", it is effective for the trend screen displayed this time, and when the screen is displayed again, a new range setting is performed.

FIGS. 7 to 9 show display examples of the trend graph in which the initial display setting 203 and the automatic change 301 range are set by the above setting method. FIG. 7 shows a conventional example (a) in which the preset display range 207 width is too wide with respect to the fluctuation range of data, and an example (b) in which the range setting method of the present embodiment is applied thereto. Things. FIG.
In FIG. 7A, the width of the display range 207 is too large compared to the data fluctuation range, so that it is difficult to read subtle data movements on the trend screen 400. However, as shown in FIG. By applying the embodiment and automatically setting the display range 207 of the trend graph to a range suitable for the data fluctuation range, the trend screen 40
As shown in FIG. 1, it is possible to capture subtle changes in process data. FIG. 8A shows a conventional example in which process data is displayed near the upper and lower limit axes of the trend screen 402, and the trend graph overlaps with the upper and lower limit values and is difficult to see. When this embodiment is applied to this, FIG.
By automatically setting the upper and lower limit values of the display range 207 as shown in (1), the trend graph can be displayed at a position that does not overlap the upper and lower limit axes. FIG.
(A) shows a conventional example in which the process data exceeds the upper and lower limits of the display of the trend graph. In this example, the process data exceeding the upper and lower limits of the display range 207 is displayed in the range of the trend screen 404. Requires the operator to manually change the range. However, when the present embodiment is applied, as shown in FIG. 9B, the upper and lower limits of the display range 207 are automatically set using the maximum / minimum values of the process data, so that the upper and lower limits are set. Can be displayed within the range of the trend screen 405 without performing a range change operation. The maximum / minimum value of the collected data was used to set the upper / lower range for displaying the trend screen, but the collected data was determined not only from the data within the display range but also from the collected data before the display range. A range can be set in consideration of data fluctuation over a long period of time. Further, in the case where a change in data is predicted in advance based on past collected data, a range can be set in consideration of the future change.

In the above embodiment, when a trend display request is issued,
Although the automatic range setting when the range reset button 208 is selected has been described, the automatic range change during the trend graph display can be realized in a similar manner. In the above embodiment, the case where the number of trend graphs is one has been described. However, as shown in FIG. 10, a trend graph 500 in which a plurality of graphs are displayed on the same time axis can be realized in the same manner as described above. is there. FIG. 10A shows a conventional example in which the change of each trend curve is difficult to catch because the display range is too wide, and FIG. 10B is an example in which the present embodiment is applied to this. If a common upper / lower limit range is used, it is necessary to redisplay all of the multiple trend graph data.
An optimal display is performed within the range of the trend screen 501.

FIG. 11 shows that, as shown in FIG. 10 (b), even on the trend screen to which the range setting method of the above-described embodiment is applied, the trend graphs may overlap, making it difficult to see the trend graph screen 600. 7 shows another embodiment of the present invention. When a display mask button 601 in the figure is selected with the mouse 9 or the like, a display mask setting screen 602 is displayed.
Is displayed on the trend graph screen 600. In the display mask setting screen 602, a button 605 for designating display and deletion of a line is provided for each trend line, and an arbitrary line is temporarily hidden by selecting and operating an individual button. It is possible. When the trend line is temporarily deleted, the corresponding trend line numbers 2 and 3 are displayed above the display mask button 607 on the trend screen 606. In the example of this figure, trend lines 2 (603) and 3 (604) on the trend screen 600 have been deleted. The display processing of the display mask setting screen 602 described above, the deletion item selection processing and the trend line deletion processing on this display screen are performed by the operator request processing unit 6 in FIG.
This is performed by the trend display request processing unit 5 and the trend line deletion processing unit 106.

[0017]

As described above, according to the present invention,
The display range width of the trend information that displays the plant monitoring parameters can be automatically changed without manual registration / change operation, saving the trouble of setting the range and always monitoring the optimum display range. The parameters can be displayed, and the operability and monitoring performance in plant monitoring can be improved. In addition, when multiple trend graphs intersect, even if they overlap and are difficult to see, the trend lines that are unnecessary for the moment can be
It is possible to temporarily delete the registered data without deleting the data, the trend lines can be easily identified, and the operability and monitoring performance in plant monitoring can be improved.

[Brief description of the drawings]

FIG. 1 is a block diagram showing an embodiment of a plant monitoring device of the present invention.

FIG. 2 is a flowchart showing a processing flow of displaying trend information according to the present invention;

FIG. 3 is a flowchart showing a processing flow when a range setting is changed according to the present invention;

FIG. 4 is a diagram showing an example of a trend graph display according to the range initial display setting of the present invention.

FIG. 5 is a diagram showing an example of a trend graph display by automatic range change according to the present invention.

FIG. 6 is a flowchart showing a processing flow at the time of a range change request according to the present invention;

FIG. 7 is a diagram showing an example of a trend graph display according to the present invention.

FIG. 8 is a diagram showing an example of a trend graph display according to the present invention.

FIG. 9 is a diagram showing an example of a trend graph display according to the present invention.

FIG. 10 is a diagram showing a display example when a plurality of trend graphs of the present invention are displayed.

FIG. 11 is a diagram of a display example for explaining a case where a part of trend lines of a plurality of trend graphs is temporarily deleted according to another embodiment of the present invention.

FIG. 12 is a diagram showing an example of a trend graph displayed by a conventional plant monitoring device.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Process input device, 2 ... Data input processing part, 3 ... Trend data collection processing part, 4 ... Trend display processing part, 5
... Trend display request processing section, 6 ... Operator request processing section, 7 ... Display control device, 8 ... Keyboard, 9 ... Mouse,
100: trend display setting unit, 101: range setting type judgment processing unit, 102: display range judgment processing unit, 103: display range change processing unit, 104: range setting change processing unit, 1
05: Range setting information storage unit, 106: Trend line deletion processing unit

──────────────────────────────────────────────────の Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat ゛ (Reference) G09G 5/00 510 G09G 5/00 510C 5/36 510 5/36 510A (72) Inventor Hisanori Miyagaki Ibaraki 5-2-1, Omikamachi, Hitachi City Hitachi Information Control System Co., Ltd. (72) Inventor Takao Yamatani 5-2-1 Omikamachi, Hitachi City, Ibaraki Prefecture Hitachi Information Control System Co., Ltd. (72) Inventor Yoneaki Yoneda 5-2-1 Omika-cho, Hitachi City, Ibaraki Prefecture Inside Hitachi Information Control System Co., Ltd. (72) Inventor Makoto Iku 5-2-1 Omika-cho, Hitachi City, Ibaraki Prefecture Information Control System Business, Hitachi, Ltd. Part F term (reference) 5B069 AA15 AA18 BA01 DD11 FA01 JA01 JA02 5B080 AA00 CA00 DA07 FA05 FA08 FA11 5C082 AA12 AA22 AA24 BA16 BB 42 BB43 CA32 CB01 DA42 DA87 MM09 MM10 5E501 AA13 AC02 AC34 BA05 CA02 CB02 CB09 EA05 EA10 EB05 FA14 FA24 FB04 FB43 5H223 AA03 EE01 EE30 FF03

Claims (2)

[Claims] 1. A plant monitoring device that captures a plant state and displays trend information on a monitoring parameter of a plant, captures maximum / minimum values of plant data and a display magnification, and determines whether or not a set range has been changed. Display range determining means, display range changing means for determining an upper / lower range that is a display range of the plant data, and data display means for displaying the plant data within a display range set by the display range changing means. A plant monitoring device characterized in that: 2. A plant monitoring apparatus for capturing a plant state and displaying trend information on monitoring parameters of a plant, in which an arbitrary trend line of a plurality of trend graphs displayed on the same time axis is temporarily designated to be erased. And a trend line erasing means for temporarily excluding a trend graph designated by the erasing designation means from being displayed.