JP3603616B2 - Waveform display device - Google Patents

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a waveform display device configured to superimpose and display multi-channel measured waveforms on the same screen, and more specifically, to simultaneously display an entire display and a partially enlarged display of a measured waveform on the same screen. The present invention relates to an improvement in a display method.
[0002]
[Prior art]
2. Description of the Related Art Conventionally, as one type of waveform display device, there has been a configuration in which measurement waveforms of a plurality of channels are superimposed and displayed on the same screen. For example, when a large amount of data is stored such as for monitoring a process and a phenomenon is confirmed later, the data is graphed and displayed as shown in FIG. 6 or FIG.
6 shows an example of the entire display of the measurement data, and FIG. 7 shows an example of an enlarged display of a part thereof. In addition, the screen display is selectively any one.
[0003]
[Problems to be solved by the invention]
Incidentally, such a conventional display method has the following problems. In other words, the entire display status situation grasp it but small part of the entire waveform in the case of such as in Figure 6 can not grasp the whole but the context of the details can be grasped in the partial enlarged view shown in FIG. 7 in the opposite The state of the waveform cannot be grasped. In short, it is not possible to check both the whole and part of the display at the same time, and there is no other choice but to selectively display FIG. 6 or FIG. 7, and it is not easy to check both, and the operation is extremely troublesome. Was.
[0004]
SUMMARY OF THE INVENTION The present invention solves the above-described problem, and an object of the present invention is to display an overview together with a normal graph so that the status of the waveform of the entire data and the status of the detailed waveform can be easily confirmed simultaneously on the same screen. It is intended to realize a waveform display device.
[0005]
[Means for Solving the Problems]
In order to achieve such an object, the device according to claim 1 of the present invention comprises:
In a waveform display device configured to be able to display measured waveforms of a plurality of channels on the same screen,
A color bar is displayed in a color- coded or shaded display with the same color corresponding to the waveform data value for each channel. Are displayed together on the same screen .
With such a configuration, the state of the waveform for the entire waveform data and the state of the waveform details by displaying the partially enlarged waveform can be simultaneously confirmed on the same screen. Also, by displaying the state of the entire waveform data in a band-like display, it is possible to save display space.
[0006]
In this case, the display space can be saved by setting the color bars to the number of channels equal to or less than the number of channels of the partially enlarged waveform display.
[0007]
Further, the display position of the partially enlarged waveform display can be moved not only by the dedicated scroll bar but also by the designation on the color bar, so that the degree of freedom of operation increases.
[0008]
Further, by displaying the cursor and the mark in the waveform display area, the frame indicating the position of the waveform portion, and the like in the color bar portion in an interlocking manner, the mutual relationship can be easily understood.
[0010]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, the present invention will be described in detail with reference to the drawings. FIG. 1 is a display example of a display screen of the waveform display device according to the present invention. The display screen is roughly divided into a menu display area A in which an upper menu and tools are displayed, a strip-shaped overview display area B below the menu display area A, a waveform display area C on the lower side, and a span display on the left side. It can be roughly classified into a region D.
[0011]
Note that the menus and icons displayed in the upper menu and icon display area A are not directly related to the present invention, and a description thereof will be omitted here.
[0012]
In the waveform display area C, a plurality of waveforms are displayed in a graph superimposed on individually assigned display colors. The waveform display in the waveform display area C is also referred to as a partially enlarged waveform display.
The horizontal axis is the time axis, and the vertical axis is the amplitude. The amplitude scale C1 on the vertical axis is the amplitude scale of the target waveform individually selected by selecting the span bar D1 in the span display area D.
[0013]
Scroll bars C3 and C4 are provided below the waveform display area C. By operating the scroll bars C3 and C4, all display waveforms can be integrally scrolled left or right.
[0014]
On the left side of the waveform display area C, an enlarged display selection button C2 for selectively enlarging the waveform display area C so as to cover the span display area D is provided as needed.
[0015]
In the span display area D, the display waveform span of each channel is displayed in a bar shape, and the display colors thereof correspond one-to-one with the display colors of the waveform displayed in the waveform display area C. The span length of each channel represents the range in which the amplitude of the corresponding measured waveform can be displayed in the waveform display area C, and can be individually set to an arbitrary length. However, in the figure, the span lengths of all the channels are set equal.
[0016]
On the left side of the span display area D, a slide button D2 for adjusting the luminance of the scale line of the waveform display area C and a slide button D3 for adjusting the luminance of the background of the waveform display area C are provided. I have.
[0017]
When the number of channels is large, the scroll buttons D4 and D5 are operated to scroll the span bar right and left, so that the span of the target channel can be selectively displayed.
[0018]
In the overview display area B, horizontally long bands indicating the state of the waveform of the entire data of each channel are displayed in a vertically stacked manner so that the channels can be identified. In the figure, bands for 12 channels are shown. This band is called a color bar (the entire stacked band is also called a color bar), and each band is displayed in a color corresponding to the value of the waveform data . The colors are, for example, blue, cyan, green, yellow, and red, and correspond to data ranges obtained by equally dividing the amplitude scale value.A small value range is blue, and a middle range is cyan, green, and yellow, respectively. The largest value range corresponds to each color red.
According to such a color bar, the color of the band display on the color bar changes frequently when the amplitude of the waveform changes drastically, and the color of the band display changes when the amplitude of the waveform does not change drastically. And the display is almost single color, and the waveform state (fluctuation) of the entire data can be easily grasped.
[0019]
Note that, by setting, it is also possible to display a color corresponding to a data range obtained by equally dividing the minimum and maximum value widths of the data regardless of the amplitude scale.
[0020]
In addition, an inverted triangular ▼ mark that is linked to the cursor position and the mark position displayed on the graph is displayed above the color bar B1.
The cursor is a vertical line cursor that can be set at an arbitrary point on the time axis of the graph. When the cursor is set, the value of the graph at that position can be read.
The mark is also a vertical cursor that can be set at any time on the time axis of the graph. This is just a memo mark on the graph.
[0021]
Note that these cursors and marks are color-coded, and the color of the mark at the top of the color bar matches the color.
A ▼ mark indicating a trigger point is also displayed above the color bar.
Note that the setting and use of the cursor, mark, trigger point, and the like are not directly related to the waveform display of the present invention, and therefore, further detailed description will be omitted.
[0022]
In the overview display area B, a white frame B2 indicating which position on the color bar B1 the waveform portion displayed in the waveform display area C corresponds to is displayed. The width of the frame corresponds to the width of the graph (the display time width of the waveform), and when the position of the display waveform in the waveform display area C is moved left and right by operating the scroll bars C3 and C4, a white outline is displayed in conjunction therewith. The frame B2 also moves.
[0023]
Conversely, instead of moving the graph, if the frame B2 is moved, the graph moves in conjunction therewith. The movement of the frame B2 can be performed simply by clicking the mouse on the color bar. The frame B2 moves right or left to the center of the position of the mouse pointer at that time.
[0024]
FIG. 2 shows an example of a change in the display state when the position of the display data is moved by any of the above operations. FIG. 2 is a display example in a case where data is discontinuous (a portion having no data is due to, for example, a power failure). FIG. 7A shows the state before the movement, and FIG. 7B shows the state after the movement.
[0025]
Note that a plurality of tabs E representing groups are provided above the overview display area B. Each group includes, for example, a maximum of 30 measurement points, of which a maximum of 12 measurement waveforms are selectively displayed. The group can be switched by selecting the tab.
[0026]
Next, the operation of the color bar display process will be described with reference to the flowchart of FIG.
(1) First, data is initialized (various data for display such as position information is initialized). … Step 1
(2) Create a color table representing the correspondence between channel numbers and colors. … Step 2
(3) Initialize the channel number and the data number, respectively (set to 0). … Steps 3 and 4
[0027]
(4) The stored data is taken out from the memory address corresponding to the channel number and the data number. … Step 5
(5) Find the color from the data value and the color table. … Step 6
(6) Find the drawing position from the data number. … Step 7
(7) Draw based on the obtained color and position. … Step 8
(8) Advance the data number by one. … Step 9
[0028]
(9) If the data number has not reached the maximum value, return to the above (4) and repeat the same operation. If the data number exceeds the maximum value, proceed to the next step. … Step 10
(10) Advance the channel number by one. ... Step 11
(11) If the channel number has not reached the maximum value, the process returns to the above (4) to initialize the data number, and thereafter the above operations (5) to (10) are repeated. When the drawing is completed for all the channels, the process ends. ... Step 12
[0029]
Next, a movement processing operation of a graph or the like will be described with reference to FIG.
(1) Accept an event input (click of a mouse button or key input from a keyboard). … Step 1
(2) It is determined whether the event is a mouse click in the color bar area (step 2).
If the click is in another area, the process proceeds to the corresponding event processing (step 4).
If it is a click in the color bar area, the process proceeds to the next process (3).
[0030]
(3) Obtain a data display position corresponding to the coordinates of the mouse pointer. … Step 4
(4) Update to the obtained data display position, and redraw both the frame B2 and the graph. … Step 5
(5) After the processing in step 5 or 3, if the processing is to be ended (end of the execution program), the execution program is ended. If it is not finished, the process returns to the event input wait of (1). … Step 6
[0031]
FIG. 5 shows a configuration diagram (one embodiment) of a main part of the waveform display device in which the above-described operation is performed. In the figure, a display memory data is stored in a data memory 1. The processing / control device 2 executes a program stored in the program memory 3, receives input information from an input device (comprising a keyboard, a mouse, etc.) 4, reads data from the data memory 1, and processes data. And a function for performing various controls such as screen drawing of the display device 5.
[0032]
In such a configuration, the processing / arithmetic device 2 refers to the color table (stored in the memory 3), obtains the display color corresponding to the data for each channel, and sets the display color of the window screen shown in FIG. A band is displayed in the view display area B. At the same time, in the waveform display area C, data (waveform) in the range designated to be enlarged is displayed in a graph according to the designated channel color.
[0033]
When the scroll button of the waveform display area C is clicked by the mouse of the input device 4, the displayed waveform moves in parallel to the right or left. At the same time, the frame B2 displayed in the overview display area B is also translated rightward or leftward.
[0034]
The same waveform movement as described above can be performed by the following operation. That is, when the mouse button is clicked on the color bar B1 by operating the mouse, the position (coordinates on the screen) of the mouse cursor at that time is read by the processing / control device 2, and the frame is moved to a position centered on the mouse cursor position. Move B2 right or left. At the same time, the processing / control device 2 scrolls the graph in the waveform display area C in conjunction with the movement of the frame B2.
[0035]
It should be noted that the foregoing description has been directed to specific preferred embodiments for the purpose of explanation and illustration of the present invention. Therefore, the present invention is not limited to the above-described embodiment, but includes many more changes and modifications without departing from the spirit thereof.
[0036]
For example, the number of display channels, types of colors, display positions on the screen, and the like are not limited to the embodiments, and can be appropriately changed and modified.
Further, the color bar is not limited to the color-coded display, and may be a display that is distinguished by the shade of the same color (including gray).
Furthermore, the number of display channels of the color bar and the graph need not necessarily be the same. The color bar may have a format in which only the channel of interest is selectively displayed according to the purpose. According to such a display format, the display space can be further saved.
[0037]
【The invention's effect】
According to the present invention as described above, the following effects can be obtained.
(1) By displaying the color bar together with the graph, the status of the waveform of the entire data can be checked on the color bar and the detailed status can be simultaneously checked on the graph, which is extremely convenient.
(2) Position information such as a cursor and a mark displayed on the graph is displayed on the color bar in conjunction with each other, so that data can be easily understood.
(3) The display position of the graph can be changed not only from the graph portion but also from the color bar portion, and the user can quickly reach the point of interest.
(4) By displaying the waveform status of the entire data in a color bar, there is an advantage that a much smaller display space is required than in a graph display.
[Brief description of the drawings]
FIG. 1 is a display example of a display screen of a waveform display device according to the present invention.
FIG. 2 is a display screen showing movement of the position of display data.
FIG. 3 is a flowchart of a display process.
FIG. 4 is a flowchart of a movement process.
FIG. 5 is a configuration diagram of a main part of the waveform display device of the present invention.
FIG. 6 is a screen display example in a conventional device.
FIG. 7 is another screen display example in the conventional device.
[Explanation of symbols]
1 Data memory 2 Processing / control device 3 Program memory 4 Input device 5 Display device A Menu display area B Overview display area B1 Color bar B2 Frame C Waveform display area C1 Amplitude scale C2 Enlarged display selection buttons C3, C4 Scroll buttons D span Display area D1 Span bar D2, D3 Slide button D4, D5 Scroll button
E tab

Claims (4)

In a waveform display device configured to be able to display measured waveforms of a plurality of channels on the same screen,
A color bar displayed by stacking band-shaped displays, which are displayed by color coding or distinction of shades of the same color according to the value of the waveform data for each channel on the screen, so that the channels can be identified; A waveform display device configured to be displayed together with an enlarged waveform display. 2. The waveform measuring apparatus according to claim 1, wherein the number of the color bars is equal to or less than the number of channels of the partially enlarged waveform display . 3. The waveform measuring apparatus according to claim 1, wherein the display position of the partial enlarged waveform display can be moved by designation on a dedicated scroll bar or the color bar . In the color bar portion, a mark indicating a cursor position and a mark position in the waveform display area, a frame indicating which position of the waveform portion displayed in the waveform display area corresponds to the color bar, and the like are displayed in conjunction with the waveform display area. The waveform measuring apparatus according to claim 1 , wherein the waveform measuring apparatus is configured to perform the measurement.