JPH0863318A - Trend graph display device - Google Patents

Abstract

PURPOSE: To intuitively designate and change the range of a trend graph while looking at a window display. CONSTITUTION: When it is desired to change the trend range of a trend graph which is shown at a trend graph display part 6, the trend range is shown in a window of the part 6. Then the present trend range of the trend graph is operated through a trend range display operation part 11 and outputted to a data conversion display control part 5. Thus the part 5 performs the control to show each trend data at the part 6 as a trend graph in response to the trend range given from the part 11.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a trend graph display device for displaying trend data graphs of plant controlled processes.

[0002]

2. Description of the Related Art Conventionally, in a plant control apparatus using a computer, trend management of a process amount is generally performed by displaying a trend graph. For setting the range of the trend graph display, a method of setting the upper and lower limits of the trend range by a numerical input operation, a method of zoom magnification + bias setting, and the like are used.

The structure of such a conventional trend graph display device is as shown in FIG. That is, the process data from the process equipment 1 is collected by the trend data collection unit 2, converted into trend data based on the definition data of the trend data definition table 3, and stored in the trend data file 4. Trend graph display controller 5
Displays the trend data stored in the trend data file 4 into a trend graph corresponding to a given trend range and displays the trend graph on the trend graph display unit 6 in accordance with a display request from the operator.

When it is necessary to change the display range of the trend graph, the trend range change section provided on the trend graph display screen is designated and a trend range change request is input to execute the trend range change function. The operation is started, and the operation of inputting the upper limit and the lower limit of the trend range numerically to the trend range change setting unit 7 is performed. As a result, the trend range change calculation unit 8 calculates the changed trend range and supplies it to the trend graph display control unit 5. Therefore, the trend graph display control unit 5 calculates the position of each trend data with respect to the newly set trend range, creates a trend graph for the new trend range, and creates the trend graph display unit 6
To display.

[0005]

However, in such a conventional trend graph display device, since an operation of changing the trend range by inputting a numerical value is required, the operator cannot intuitively recognize the trend range. The setting of the upper and lower limits of the range did not match the scale on the display, and it was often necessary to repeat the operation, and there was a need for improved operability.

The present invention has been made in view of such conventional problems, and a trend graph display device capable of intuitively performing an operation of setting a trend range by a mouse or a touch operation and improving operability is provided. The purpose is to provide.

[0007]

According to another aspect of the present invention, there is provided a trend graph display device, wherein a trend graph display device collects and stores trend data of a process input from the outside, and a trend data stored by the data collection unit. Is converted to a trend graph corresponding to the given trend range, a trend graph display part that displays the trend graph converted by this data conversion display control part, and this trend graph display part The trend range display section for displaying the trend range of the present trend graph in a window, and the trend range display operation section for operating the trend range displayed in the window and outputting it to the data conversion display control section are provided.

According to a second aspect of the present invention, in the trend graph display device according to the first aspect, the trend range display section further has a function of displaying the display request section of the trend range selection table, and the trend range display operation section has the trend range. When a trend range selection table display request section display command is received from the display unit, the trend range selection table is displayed in a window, and the selected trend range is output to the data conversion display control unit.

[0009]

In the trend graph display device according to the present invention, the data conversion display control unit converts the trend data stored in the data collection unit into a trend graph corresponding to the trend range given by the trend range display operation unit, and the trend graph is displayed. Display on the display. When the trend range needs to be changed, the trend range of the current trend graph is displayed on the trend graph display section as a window, the trend range is operated by the trend range display operation section, and output to the data conversion display control section.

As a result, the data conversion display control unit can control to display each trend data on the trend graph display unit as a trend graph according to the trend range given by the trend range display operation unit. The trend range change operation of can be performed by the window operation, and the intuitive operation becomes possible.

According to a second aspect of the present invention, there is provided the trend graph display device according to the first aspect, wherein the trend range display section further has a function of displaying a display request section of the trend range selection table. When the operation section receives a command to display the trend range selection table display request section from the trend range display section, the trend range selection table is displayed in a window,
By providing the function of outputting the selected trend range to the data conversion display control unit, the trend range can be selected by selecting the trend range of the trend graph, and the operability of changing the trend range is further improved.

[0012]

Embodiments of the present invention will now be described in detail with reference to the drawings. FIG. 1 shows a functional block diagram of an embodiment of the present invention. Although each component of the trend graph display device of this embodiment is actually realized in the form of a software program executed by a computer system,
Hereinafter, a block diagram will be described.

The plant device 1 is composed of operating devices for operating various parts of the plant, various detecting devices for detecting process data of the plant, and the like. The trend graph display device according to this embodiment includes a trend data collection unit 2, a trend data definition table 3, a trend data file 4, a trend graph display control unit 5, a CRT, and a liquid crystal display device. Trend range change calculation unit 8, trend range display change operation unit 1
1 and a trend range change operation display unit 12 that opens a window in the trend graph display screen of the trend graph display unit 6 or switches the screen to display a screen for changing the trend range.

The trend data definition table 3 stores, for example, definition data such as a range and a time span for display, and the trend data collection section 2 defines process data input from the plant equipment 1 as trend data definition. It has a function of converting the trend data based on the definition data registered in the table 3 and storing the trend data in the trend data file 4.

When receiving a display request, the trend graph display control section 5 returns from the trend data file 4 by a certain time width in the past, starting from the display request time and reading the trend data from the trend data file 4. The trend graph display unit 6 has a function of displaying the trend graph.

The trend range display change operation section 11 has a function of displaying a trend range change screen on the trend range change operation display section 12 in response to a trend range change request input, and the trend range change calculation section 8 changes the trend range. It has a function of changing the display data based on the change data input from the operation display unit 12 and giving the change to the trend graph display control unit 5.

Next, the operation of the trend graph display device having the above configuration will be described based on the flowchart of FIG. 2 and the screen display example of FIG. The process data from the plant equipment 1 is input to the trend data collection unit 2, and the trend data collection unit 2 converts the process data into trend data based on the definition data of the trend data definition table 3 and sequentially stores the trend data in the trend data file 4. To do.

When a trend data display request is input, the trend graph display control section 5 returns from the trend data file 4 trend data for that time width by returning by a certain time width in the past starting from the request time point. The relative position between the upper limit and the lower limit of the set trend range read out via the data collection unit 2 is obtained for each trend data, and a trend graph is displayed on the trend graph display unit 6.

If it is necessary to change the display range of the trend graph here, the trend range changing operation display unit 1
2, the trend range change window screen 13 as shown in FIG. 3 is called through the trend range display change operation section 11 and the change operation is performed according to the flowchart shown in FIG.

This trend range changing operation display section 12
Is called by selecting and designating the trend range change screen call section 21 which is always displayed on the normal trend graph display section 6. When this trend range change screen calling section 21 is selected, a window screen 22 for selecting bar display or numerical value display is displayed on the screen of the trend graph display unit 6 as the display of the trend range change screen (step S1).

When the numerical display section is selected here, a window screen 23 showing the upper limit, lower limit and bias value of the current trend range is displayed. When changing the setting contents, the pen number menu 24 is also displayed at the same time. Here, by selecting the pen number, the trend range whose setting contents are changed is selected, and the changing operation can be performed (steps S2 and S3). Therefore, by inputting a numerical value for the selected pen number using a keyboard (not shown) and a software key (not shown), the change range information is obtained from the trend range change calculator 8 by the registration operation. The trend graph display control unit 5 executes the calculation based on the newly set trend range and the relative position between the newly set trend range upper and lower limits is set for each trend. It is obtained for each data and displayed on the trend graph display unit 6 as a trend graph corresponding to the new trend range (step S6).

When the bar display section is selected on the screen 22 for selecting the bar display or numerical display in step S2, the bar display window 25 and the trend range slider 26 are displayed together with the pen number menu 24 (step S).
7).

Then, while looking at the bar display window 25, the pen number to be changed is selected in the pen number menu 24. In this selection, a single selection or a plurality of simultaneous selections are possible, and the selected pen number is valid in the trend range slider 26, bias slider 28 (described later), and trend range selection window 30 (described later). In the case of this embodiment, the bar display window 25
Then, the upper and lower sides of the square frame indicate 100% to 0% of the instrument, and the range shown between the triangular marks 29 indicates the current display range of the trend graph. The display range section corresponding to the pen number selected in the pen number menu 24 is displayed by a bold line or a color change so that the current set range can be easily recognized.

The trend range slider 26 becomes effective for the pen number selected in the pen number menu 24,
The portion to be enlarged and displayed is designated by this slider 26. In other words, if the upper limit slider TRH and the lower limit slider TRL are expanded vertically, the range width displayed by that amount becomes wider, and a wider range is displayed on the window screen, which results in reduced zooming. If the TRL is narrowed, the range width to be displayed becomes narrower, and the narrow range is displayed in the full window screen, resulting in zooming enlargement. By performing the slider operation and the registration operation (steps S8 to S10) in this way, the trend range change calculation unit 8 calculates the width of the trend range and the width of the scale, and calculates the trend graph display control unit 5. To update the trend range (step S6).

In this case, the trend range slider 26 is not operated and 0,
2, 40, 60, 80, 100% etc. above and below the scale
The range range may be designated by selecting a location.

In addition to the above method, a trend range selection screen calling section 27 is prepared, and the trend range selection window 30 is displayed by selecting it. Therefore, a desired range is selected from this trend range selection window 30. By doing so, it is possible to promptly specify the range (step S
11, S10, S6).

Further, it is possible to give a bias to the pen number selected in the pen number menu 24. When the bias slider calling section 31 displayed at the same time as the pen number menu 24 is selected, it is displayed. The trend range slider 26 is changed to the bias slider 28 and displayed. Here, from −100% to +10.
Bias can be set up to 0%. By also registering the result of this bias setting, the upper limit, lower limit, scale width, etc. of the trend range graph are calculated by the trend range change calculation unit 8, and the result is passed to the trend graph display control unit 5 to change the trend range. Update and create the corresponding trend graph to display the trend graph display section 6
Will be displayed.

As described above, in the trend graph display device of this embodiment, the display range of the trend graph can be set and changed by inputting numerical values, and the window for changing the trend range can be opened to display the bar display menu. By selecting it, it becomes possible to select an arbitrary trend range by selecting the pen number while looking at the bar display window, and it becomes possible to intuitively change the trend range of the trend graph.

Also, by opening the trend range selection window and selecting the corresponding trend range number, the trend range can be changed quickly, and intuitive operation and quick operation are possible.

Furthermore, since the bias slider is displayed so that the bias can be set, the flexibility of displaying the trend graph can be increased.

In the case of the first aspect of the invention, the trend range selection screen 30 is a function that can be added if necessary, and may be omitted if a high function is not required. Further, in any of the first and second aspects of the invention, the bias setting function is a function that can be added if necessary, and may be omitted if a high function is not required. Good.

[0032]

As described above, according to the invention of claim 1,
When it is necessary to change the trend range of the trend graph, display the current trend range in a window on the trend graph display section and change the trend range displayed in the window by the trend range display operation section. Since it is displayed on the display as a trend graph according to the range, the trend range change operation of the trend graph can be performed by operating the window, and intuitive operation is possible and easy. The trend graph can be displayed accurately in the desired trend range.

According to the invention of claim 2, in the trend graph display device of claim 1, the trend range display section further has a function of displaying a display request section of the trend range selection table, and the trend range display operation section is provided. When a trend range selection table display request section display command is received from the range display section, the trend range selection table is displayed in a window and the selected trend range is output to the data conversion display control section.
The trend range of the trend graph can be changed by selecting the desired range from the trend range selection table, which eliminates the need for the operator to input a numerical value to change the trend range. Is further improved.

[Brief description of drawings]

FIG. 1 is a functional block diagram of a common embodiment of the inventions of claims 1 and 2. FIG.

FIG. 2 is a flowchart showing a trend range changing operation procedure of the above embodiment.

FIG. 3 is an explanatory diagram showing an example of a trend range changing operation screen of the above embodiment.

FIG. 4 is a functional block diagram of a conventional example.

[Explanation of symbols]

 1 Plant Equipment 2 Trend Data Collection Section 3 Trend Data Definition Table 4 Trend Data File 5 Trend Graph Display Control Section 6 Trend Graph Display Section 8 Trend Range Change Calculation Section 11 Trend Range Display Change Operation Section 12 Trend Range Change Operation Display Section 21 Trend range change screen call section 22 Display method selection window 24 Pen number menu window 25 Bar display window 26 Trend range slider 27 Trend range selection window Call section 30 Trend range selection window

Claims (2)

[Claims] 1. A data collection unit that collects and stores trend data of a process input from the outside, and a data conversion unit that converts the trend data stored by the data collection unit into a trend graph corresponding to a given trend range. A display control unit, a trend graph display unit that displays the trend graph converted by the data conversion display control unit, and a trend range display unit that displays a window of the trend range of the current trend graph displayed by the trend graph display unit. And a trend range display operation unit for operating the trend range displayed in the window and outputting the trend range to the data conversion display control unit. 2. The trend graph display device according to claim 1, further comprising a function for displaying the display request section of the trend range selection table in the trend range display unit, and the trend range display operation unit for displaying the trend range display. Trend range selection table display request section display command, the trend range selection table is displayed in a window and the selected trend range is output to the data conversion display control section. apparatus.