JP2002131339A - Display device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a display device capable of displaying the newest waveform data in a position of good visibility especially when a circular display is performed in real time. SOLUTION: This display device functions so that a plotting sheet is displayed on a display screen and data of waveforms to be measured are successively recorded on the sheet. A plotting means captures a plotting program, fixes a plotting starting position relative to the sheet on the screen, and continuously plots the data of the waveform to be measured while rotating the sheet in one direction.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a display device which displays a drawing sheet on a screen of a display and functions to sequentially record waveform data to be measured on the drawing sheet.

[0002]

2. Description of the Related Art Conventionally, in a "circular display" which is one of data display methods on a monitor, a viewer or the like using an application, there are few corresponding display versions, and an actual recording paper is used in the display format. Unlike the drawing method used in the circular recorder, the measured waveform data of the channel is simply drawn on a circular drawing sheet displayed on a screen so as to be recordable at a constant cycle.

FIG. 12 shows a circular display by a conventional application. In FIG. 12, the drawing sheet 10 displayed on the screen is fixed, and the drawing data is moved with time and the waveform data is recorded on the drawing sheet 10 in the fixed state.

[0004]

In the above-mentioned conventional circular display by an application, the display position of the latest value on the drawing sheet is displayed so as to move sequentially in one direction, so that the latest value indicates the time on the drawing sheet. It was necessary to search for it, and the value display was at an angle to the viewing side, and the visibility was not always good. In particular, when circular display is performed in real time like a monitor, it is desirable that the latest waveform data is displayed at a position where visibility is highest.

When recording on an actual drawing sheet by the circular recorder, it is necessary to replace the drawing sheet with another unused drawing sheet when the recording on the drawing sheet is completed. Similarly, in the conventional circular display by the application, the previous data is erased on the drawing sheet on the screen and a new drawing area is drawn, which is not desirable in terms of data continuity.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems of the prior art, and displays the latest waveform data at a position having good visibility, especially when performing circular display in real time. It is an object of the present invention to provide a display device which enables the display device.

A further object of the present invention is to provide a display device capable of continuously recording data of a measured waveform to clarify the context.

[0008]

In order to achieve the above object, a display device of the present invention has a function of displaying a drawing sheet on a screen of a display device and sequentially recording waveform data to be measured on the drawing sheet. A display device that captures a drawing program, fixes a drawing start position for a drawing sheet on a screen, and continuously draws waveform data to be measured while rotating the drawing sheet in one direction with respect to the drawing start position. A display device having drawing means is provided.

According to the display device of the present invention, it is possible to display the latest waveform data at a position with good visibility, especially when performing circular display in real time.

Here, the drawing program includes a continuous recording function of recording the measured waveform data in each cycle in a continuous state. This makes it possible to continuously record the data of the measured waveform and clarify the context.

It is also a preferable embodiment that the drawing program includes an enlarged display function of cutting out an arbitrary portion of the measured waveform data drawn on the drawing sheet and enlarging and displaying it on a display. As a result, it is easy to limit the display range, and it is possible to perform processing such as partially enlarging and displaying the image, or displaying only a necessary portion to reduce the screen size.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in more detail based on an embodiment of the present invention with reference to the drawings. FIG. 1 is a block diagram illustrating a schematic configuration of a control system of a processing device that enables the display device according to the present embodiment.

The processing device includes a CPU 11 and a CPU 1
And a display unit 14 connected to the output side of the CPU 1. The rendering unit 110 is an application (a circular display application) 1 connected to the CPU 11.
In accordance with 2, a circular drawing sheet is displayed on the screen of the display 14, and a circular display for drawing the measured waveform data obtained from the module 13 is executed on the drawing sheet.

FIG. 2 is a diagram showing a drawing sheet displayed on the screen of the display device by the display device according to the present embodiment.
This drawing sheet 20 is for drawing the waveform data to be measured for one hour on the entire surface, and is divided into sectors around the central axis at intervals of 5 minutes. In the drawing sheet 20, FIG.
, The latest value in the measured waveform data is always displayed.

Circular display application 12
Are taken in by the drawing means 110 and function to display the drawing sheet 20 on the screen of the display 14 and to sequentially record the measured waveform data on the drawing sheet 20. The circular display application 12 is provided with a drawing sheet 20 on the screen.
The drawing start position S at which the latest data _DN is drawn is fixed, and the drawing sheet 20 is rotated in one direction (counterclockwise in FIG. Includes a drawing program that draws continuously.
The drawing program includes a continuous recording function for recording measured waveform data in each cycle in a continuous state, and a drawing sheet 20.
And an enlarged display function for cutting out an arbitrary portion of the measured waveform data drawn in the display section 14 and enlarging and displaying it on the display 14.

FIG. 3 is a flowchart showing a drawing process at the time of circular display according to the present embodiment. First, when the drawing process is started, the drawing means 110 acquires the number of the leading data D _H (see FIG. 4) to be displayed of the measured waveform data on the circular display application 12 (Step S1), The number of the final data _DF is calculated from the cycle of the drawing sheet 20 (step S2). Further, in step S3, the drawing sheet 20 is created based on an arbitrary fixed position of the leading data from the cycle and time.

Next, in step S4, drawing is performed on the background, and further, from the start data _DH to the final data _DF , a data drawing position is calculated based on an arbitrary fixed position and drawn on the background (steps S5 to S8). )
And then reflect it in the foreground (step S
9), the drawing process ends.

FIG. 5 shows the waveform data to be measured displayed in a circular manner as a linearly continuous graph. 4 can be displayed on the screen in FIG.
Is the part enclosed by frame A. 5, the right end of FIG. 5 is the latest data D _N , the right end of the frame A is the first data D _H to be displayed, the left end of the frame A is the oldest data (final data) D _F within the displayable period, and FIG. the left end of the has become the oldest data D _O.

FIG. 6 shows a state immediately before one cycle of data is full on the drawing sheet, and FIG. 7 shows a situation after one cycle of data overflows. In FIG. 7, since the waveform data to be measured (held data) has already exceeded the period, what is displayed is the oldest data that can be displayed within the period, and the really oldest data is displayed on the screen. Is not displayed.

That is, since the circular display application 12 of this embodiment includes a drawing program having a continuous recording function of recording the measured waveform data in each cycle in a continuous state, the data exceeds one cycle. However, it is possible to continuously record without making a new drawing sheet and refreshing the screen. 6 and 7 that the drawing start position S
Is always constant.

FIGS. 8 and 9 are diagrams for facilitating the understanding of the continuity of the data recording shown in FIGS. 6 and 7. FIG. FIG. 8 shows continuous waveform data to be measured corresponding to the display position of a drawing sheet for circular display.
Shows the stored data in FIG. 8 as a linear data flow.

[0022] In FIG. 8, are recorded continuously data spirally from the latest data D _N always constant drawing start position S regardless of the time transition until the oldest data D _O. The data on the top surface with shading is actually displayed on the screen of the display 14, and the following spiral data is saved,
Not displayed at this time. In FIG. 8, the portion that can be displayed on the screen is a portion surrounded by a frame A in FIG. 9, and the right end in the drawing is the latest data _DN (also the top data _{DH in} this example), and the left end of the frame A Is the oldest data D _F within the displayable period, and the left end in the figure is the oldest data D _O.

As described above, when the circular display application 12 of this embodiment is used, the top data to be displayed (the latest data D in FIG.
The past data from _N ) to the cycle can be displayed. Then, by determining the leading data to be displayed and the cycle, it is possible to draw on one drawing sheet 20 in any data range. For this reason, scrolling is performed to rotate the drawing sheet 20 in one direction about the axis,
Even when the waveform is moved to the data position to be displayed, the display on the screen is always configured as the drawing sheet 20 in a cycle including the latest data to the oldest data within the specified data range.

FIGS. 10 and 11 show a circular display in which the display portion is limited. As described above, the circular display application 12 according to the present embodiment executes a drawing program including an enlarged display function of cutting out an arbitrary portion of the measured waveform data drawn on the drawing sheet 20 and displaying it on the display 14 in an enlarged manner. Have.

Therefore, as shown in FIGS. 10 and 11, an arbitrary angle range is cut out from the drawing start position S, and
It can be displayed in its original size or enlarged. This makes it possible to reduce the size of the entire screen while enlarging a desired portion of the drawing sheet 20 for easy viewing. Therefore, the display range can be easily limited, a desired portion can be easily enlarged, and the screen size can be reduced.

In the present embodiment, it is possible to visually recognize the same as a familiar mechanical circular recorder.
When circular display is performed in real time, the latest waveform data can be displayed at a position with good visibility.

As described above, the present invention has been described based on the preferred embodiments. However, the display device of the present invention is not limited to the configuration of the above-described embodiment, but may be modified from the configuration of the above-described embodiment. A display device with various modifications and changes is also included in the scope of the present invention.

[0028]

As described above, according to the display device of the present invention, it is possible to display the latest waveform data at a position with good visibility, especially when performing circular display in real time.

[Brief description of the drawings]

FIG. 1 is a block diagram illustrating a schematic configuration of a control system of a processing device that can use a display device according to an embodiment.

FIG. 2 is a diagram showing a drawing sheet displayed on the screen by the display device according to the embodiment.

FIG. 3 is a flowchart illustrating a drawing process during circular display according to the embodiment.

FIG. 4 is a diagram schematically showing a drawing sheet circularly displayed in the embodiment.

FIG. 5 is a diagram in which the waveform data of FIG. 4 is displayed as a linearly continuous graph.

FIG. 6 is a diagram illustrating a state immediately before data for one cycle is full on a drawing sheet.

FIG. 7 is a diagram showing a state after one cycle of data is full.

FIG. 8 is a diagram for facilitating understanding of the continuity of the data recording shown in FIGS. 6 and 7;

FIG. 9 is a diagram for facilitating understanding of continuity of data recording shown in FIGS. 6 and 7;

FIG. 10 is a diagram showing a circular display in which a display portion is limited.

FIG. 11 is a diagram showing a circular display in which a display portion is limited.

FIG. 12 is a diagram showing a circular display by a conventional application.

[Explanation of symbols]

 Reference Signs List 11 CPU 12 Circular display application 13 Module 14 Display 20 Drawing sheet 110 Drawing means S Drawing start position

Claims (3)

[Claims] 1. A display device which displays a drawing sheet on a screen of a display device and functions to sequentially record waveform data to be measured on the drawing sheet.
A display device comprising: a drawing unit that fixes a drawing start position for a drawing sheet on a screen and continuously draws measured waveform data while rotating the drawing sheet in one direction with respect to the drawing start position. 2. The display device according to claim 1, wherein the drawing program includes a continuous recording function for recording the measured waveform data in each cycle in a continuous state. 3. The drawing program according to claim 1, wherein the drawing program includes an enlarged display function of cutting out an arbitrary part of the measured waveform data drawn on the drawing sheet and enlarging and displaying it on a display.
The display device according to claim 1.