JP2850961B2 - Display control device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[Industrial applications]

The present invention relates to a display control device, and more particularly, to a display control device that displays measured data and the like as a trend graph.

[Prior art]

The above-described trend graph display is used, for example, for monitoring and managing factory equipment. When comparing a predetermined value set in the equipment with a measured value actually obtained from the equipment, the two values are used. Changes can be compared by a trend graph display. These displays and their control are usually performed by a configuration including a CRT display as a display, a CPU, a keyboard, a hard disk for recording measurement data, and the like. 16 and 17 are schematic diagrams showing a conventional display system. FIG. 16 shows a system in which four items of recorded data are divided into four frames in the y-axis direction and displayed on one screen. The method shown in FIG. 17 shows a method of displaying four items of recording data in the same frame of one screen.

[Problems to be solved by the invention]

However, in the display method shown in FIG. 16, the resolution of the scale expressed on the screen with respect to the actual scale in the y-axis direction is reduced to 1/4 as compared with the one displaying one frame on one screen. However, there is a problem that the tendency of the minute change is difficult to understand. On the other hand, the display method shown in FIG. 17 displays all the recorded data in the same frame of one screen, so that the above problem can be almost solved. However, as shown in FIG. 18, when two trend graphs have the same value and overlap or have approximate values, it is difficult to determine which value is the data of which item. Was produced. For this reason, conventionally, the display color was changed for each item,
As shown in FIGS. 18 and 19, a method of partially enlarging the y-axis scale was employed. However, even in these methods, only the color of the graph displayed later is displayed in the overlapping part of the graph, and the color of the previously displayed graph is erased, so whether the graphs are overlapping or abnormal. Therefore, there is a problem that it is impossible to determine whether data is not recorded and data is missing. In particular, this trend graph display is often used when comparing a set value and a measured value as described above, and in this case, the difference between the two values is very small, and the graphs are often overlapped or approximated. Become. Therefore, solving the problem of overlapping graphs in a trend graph display is sometimes an important issue. The present invention has been made in view of the above-described conventional problems, and an object of the present invention is to move a display position of a desired graph among a plurality of trend graphs displayed in the same frame within the same frame. Accordingly, it is an object of the present invention to provide a display control device capable of eliminating the overlap of different graphs and avoiding the problem of reducing the resolution of the graphs.

[Means for Solving the Problems]

For this purpose, in the present invention, storage means for storing data of a plurality of items, display means for displaying the data stored in the storage means in one screen in a trend graph form for one screen for each item, and Specifying means provided corresponding to each of the trend graphs displayed for each item and specifying a direction in which the corresponding trend graph is to be moved on the display screen; and specifying means while the specifying means continues to be specified. According to the direction specified by, the corresponding trend graph is stepwise moved in the specified direction by repeatedly adding or subtracting a predetermined moving amount set arbitrarily separately and calculating the display position. And control means for displaying.

[Action]

According to the above configuration, a desired graph can be designated from a plurality of trend graphs, and this graph can be moved to another position in the same screen and displayed.

【Example】

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. 1 and 2 are a block diagram and a schematic perspective view, respectively, showing the configuration of a display control device according to an embodiment of the present invention. In these figures, reference numeral 1 denotes a CPU for performing display control, for example, a display data area 1A constituted by a RAM, a y-axis reference position storage top area 1B, and a ROM 1C for storing processing procedures described later with reference to FIG. Having. Reference numeral 2 denotes a display device including a CRT or the like, which can display four items of trend graphs on one screen. Reference numeral 3 denotes a keyboard, as shown in FIG. 2, in which four sets of UP (↑) and DOWN (↓) keys for operating the trend graph display screen are arranged in accordance with the number of items of the displayed graph. Reference numeral 4 denotes a hard disk for storing data of a trend graph to be displayed, that is, data such as set values and measured values corresponding to the set values. FIG. 3 is a conceptual diagram showing the details of the above-described y-axis reference position storage area 1B. For each of the four trend graphs, the position data serving as the y-axis reference is stored as a position on the screen. FIG. 4 is a conceptual diagram showing the details of the display data area 1A described above. For each of the four items, y is set for each coordinate on the x-axis.
Display data is stored as coordinate data starting from = 0. FIG. 5 is a conceptual diagram showing the storage contents of the hard disk 4. In each item, the recording data corresponding to the y-axis coordinate is stored for each of the recording data corresponding to the x-axis coordinate at ten locations on the display screen. This data is converted to 1/100 and becomes y-axis coordinate data of the display screen, that is, display data.
It should be noted that only two items of recording data are shown in FIG. FIG. 6 shows the frame size of the trend graph display screen. The x-axis has a scale corresponding to 10 print data points, and the y-axis has a scale 0 to 100 obtained by converting the print data scale 0 to 10000 into 1/100. In the above configuration, when the trend graph screen is called by a predetermined key operation, the trend screen display control program shown in FIG. 7 is started. That is, when it is determined in step S1 that the key for calling the trend graph display screen of the keyboard 3 has been pressed, the process proceeds to step S2, where the contents of the hard disk 4 shown in FIG. To be stored. At the same time, as shown in FIG.
The reference position data “0” in the y-axis direction is stored in 1B. Next, in step S3, the reference position data stored in the area 1B is added to each of the data stored in the area 1A, and in step S4, based on the y-axis coordinate as a result of the addition, as shown in FIG. Trend graph display. In step S5, UP key or DO on keyboard 3
It is determined whether the WN key has been pressed. When the UP / DOWN key is pressed, the process proceeds to step S6, where the trend graph corresponding to the pressed UP / DOWN key is deleted, and the screen shown in FIG. 11 is displayed. In this example, the trend graph of the second item is deleted. Next, in step S7, the pressed UP key or
A predetermined number “10” is added or subtracted from the data of the corresponding item in the top area 1B according to the DOWN key, and the data is stored again. In this example
In response to pressing the UP key, "10" is added to the data of the first item, and the state shown in FIG. 14 is obtained. Next, in step S8, the data of the area 1B is added to each of the data of the area 1A for each corresponding item, and a trend graph of each item is displayed to obtain a screen shown in FIG. Then, in step S9, wait until 0.5 seconds elapses,
After 5 seconds have elapsed, the flow returns to step S5 to determine whether the UP / DOWN key has been pressed. If the determination is affirmative, processing similar to the above-described processing corresponding to the key pressed in step S6 and subsequent steps is performed. This example shows a case where the UP key has been pressed for 1.5 seconds, and the above processing is repeated four times, and the area 1B has the contents shown in FIG. The display screen of the trend graph is displayed as shown in FIG. If it is determined in step S5 that the UP / DOWN key has not been pressed, the process proceeds to step S10, and it is determined whether the display of the trend graph screen has been terminated by another key operation. If the determination is affirmative, the present process is terminated. If the determination is negative, it is determined in step S11 whether the next trend graph display is requested. If the determination is negative, the process returns to step S5, and if the determination is affirmative, the process returns to step S2 to perform processing related to the next trend graph display.

【The invention's effect】

As is apparent from the above description, according to the present invention, a desired graph can be designated from a plurality of trend graphs, and this graph can be moved to another position on the same screen and displayed. As a result, it is possible to eliminate the overlapping or approaching of graphs due to the approximation or the same of these values in a plurality of trend graphs in which the values are approximated or the same, without impairing the correlation between the plurality of trend graphs, It is possible to clearly confirm the trend graph of the item of interest. As a result, the visibility of the trend graph screen by the operator is improved, so that a trend graph of many items can be displayed in one screen.

[Brief description of the drawings]

FIGS. 1 and 2 are a block diagram and a schematic perspective view, respectively, showing the configuration of a display control apparatus according to an embodiment of the present invention. FIGS. 4 and 8 are conceptual views showing details of the display data storage area shown in FIG. 1, and FIG. 5 is a conceptual view showing details of the display data storage area shown in FIG. FIG. 6 is a schematic diagram showing a scale configuration of a trend graph display screen according to an embodiment of the present invention, and FIG. 7 is a trend graph display according to an embodiment of the present invention. 10 to 13 are schematic diagrams showing a display example of a trend graph according to one embodiment of the present invention, and FIGS. 16 to 19 show conventional examples of a trend graph display. It is a schematic diagram. 1 ... CPU, 1A ... display data storage area, 1B ... y-axis reference position storage area, 2 ... display, 3 ... keyboard, 4
……hard disk.

 ──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-56-151360 (JP, A) JP-A-63-139394 (JP, A) Fully open 58-115792 (JP, U) Really open 16690 (JP, U)

Claims (1)

(57) [Claims] 1. A storage means for storing data of a plurality of items, and the data stored by the storage means is stored in one screen for each of the items.
Display means for displaying a frame in the form of a trend graph, and a direction provided on the display means for each of the trend graphs displayed for each of the items, the direction in which the corresponding trend graph is moved on the display screen is designated. While the designation by the designation means is continued, the display position is calculated by repeatedly adding or subtracting a predetermined movement amount set arbitrarily separately according to the direction designated by the designation means. Control means for moving the corresponding trend graph stepwise in the designated direction and displaying the same, the display control apparatus comprising: