JPH0287193A - Display device system - Google Patents

Abstract

PURPOSE:To reduce the load on a host computer by providing a change image plane data storage part stored with state change information which is inputted by an input part. CONSTITUTION:While only the state change of a process is outputted from the host computer, the state change is integrated on the side of a display device and the integration result and fixed image plane data are put together to display the current state of the process. Namely, the display device 11 is equipped with the input part 1, the fixed image plane data storage part 4, a display control part 7, a CPU 9, etc., and every time change extraction data is supplied from the host computer 10, the data is integrated and the integration result and preset fixed image plane data are added to generate a display image plane, which is displayed. Consequently, the amount of data transferred from the host computer side to the display device side is reduced to lighten the load on the host computer.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a display system for displaying the status of a plant, etc.

(Prior Art) Many display systems that display the status of a plant use a host computer to monitor the status of the plant, transfer the monitoring results to a display unit, and display the results on a CRT screen.

However, in such a display device system, the amount of data transferred from the host computer side to the display device side is enormous, so there is a problem that the load required for the transfer process becomes too large.

From this point of view, a display system as shown in FIG. 7 was developed.

The display system shown in this figure includes a host computer 104 and one display device 99, and the host computer 104 constantly monitors the status of the plant and transfers the monitoring results to the display device 99.

The display device 99 includes a fixed screen data storage section 101 in which fixed screen portions making up the display screen are registered, a changing screen data storage section 102 in which changing portions making up the display screen are stored, and a changing screen data storage section 102 in which the changing portions making up the display screen are stored. a synthesizer 103 that synthesizes the output of the section 102 and the output of the fixed screen data storage section 101; and a CR that displays the output of the synthesizer 103.
T105.

Each time plant status information is output from the host computer 104, it is captured and stored in the change screen data storage section 102. In addition, when a screen display request is input in parallel with this operation, the synthesizer 103 synthesizes the data stored in the variable screen data storage section 102 and the data stored in the fixed screen data storage section 101. Create a display screen 104 and use it as CRTI
Display it on 05.

However, in such conventional display system,
Regardless of changes in the status of the plant, all information regarding the parts of the plant subject to change are sent to the host computer 1 at predetermined intervals.
04 and stored in the change screen data storage unit 102, when there are many parts to be changed in the plant, the amount of data output from the host computer 104 increases. There was a problem that the load on the computer would increase.

(Object of the Invention) The present invention has been made in view of the above circumstances, and can significantly reduce the amount of data transferred from the host computer side to the display device side, thereby making it possible to significantly reduce the load on the host computer. It is an object of the present invention to provide a display device system that can significantly reduce the amount of noise.

(Summary of the Invention) In order to solve the above-mentioned problems, in the display system according to the present invention, only the changes in the state of the process are outputted from the host computer.

The display device integrates the state changes and combines the integration results with the fixed screen data to display the current state of the process.

(Embodiment) FIG. 1 is a block diagram showing an embodiment of a display system according to the present invention.

The display system shown in this figure is a host computer 1.
0 and a display device 11, the state of the plant is monitored by the host computer 10, and changes in the state of the plant obtained based on the monitoring results are transferred to the display device 11 side. 11 to change the contents of the state of the plant displayed.

The host computer 10 constantly monitors the plant, detects when the state of the plant changes, generates change extraction data, and supplies this to the display device 11.

In this case, the change extraction data is based on classification data P□ (M indicates the screen number and N indicates the process equipment number) indicating the screen number and process equipment number, and this classification data PMN as shown in Figure 2. State of specified process equipment 71! Status data 5L (L
is a code indicating the status).

The display device 11 includes an input section 1, a human power interface 2,
a communication interface 3, a fixed screen data storage section 4,
It includes a process information file 5, a display data memory 6, a display control section 7, a CRT 8, and a CPU 9.
Every time the change extraction data is supplied from the host computer 10, it is integrated, and this integration result is added to preset fixed screen data to create a display screen and display it.

The input unit 1 is equipped with a keyboard, a mouse, etc., and when these keys or the mouse are operated to input a display command or the like, this is taken in and supplied to the input interface 2.

When the input interface 2 receives a display command or the like from the input section 1, it takes in the command and sends it onto the bus 12.

Further, the communication interface 3 is connected to the host computer 1.
When change extraction data from 0 is supplied, it is taken in and sent onto the bus 12.

Further, the fixed screen data storage section 4 is a section in which image data of an unchanging portion of the screen showing the state of the plant is stored in advance, and is stored when a read command is supplied via the bus 12. Image data (fixed screen data) is read out and sent onto the bus 12.

The process information file 5 is composed of a semiconductor memory, a floppy disk device, etc., and when a registration command is supplied via the bus 12, the process information up to that point is stored based on the change extraction data supplied together with the registration command. change.

Further, when a read command is supplied via the bus 12, the stored process information is read out and sent onto the bus 12.

In this case, the process information is divided into a plurality of process description areas 13 as shown in FIG. , N indicates the process equipment number), status data S indicating the status (on/off status, etc.) of the process equipment specified by the classification data P and H, and the X position of the process equipment on one screen. Data X and Y indicating the Y position are written.

The display data memory 6 has a storage capacity for one screen, and stores display data when it is supplied via the bus 12. Then, when a read command is supplied from the display control section 7, the stored display data for one screen is sequentially read out and supplied to the display control section 7.

The display control section 7 includes a CRT controller (CRTC), etc., and is connected to the input section 1 and the host computer 10.
When a display request command is supplied from the display data memory 6, display data for one screen is read out from the display data memory 6, this is converted into an image signal, and this conversion result is supplied to the CRT 8 for display.

Further, the CPU 9 is constituted by a microprocessor or the like, and controls each part of the apparatus based on a preset program.

Next, the process information rewriting operation and display operation of this embodiment will be sequentially explained.

First, when the shape of the plant changes, the host computer 10 detects this, generates change extraction data, and supplies this to the display device 11.

As a result, the CPU 9 of the display device 11 takes this information, rewrites the contents of the process description area 13 corresponding to the change extraction data in the process information file 5, and stores the latest plant state in the process information file 5.

Further, when a display request command is supplied from the host computer 10, the input section 1, etc., the CPU 9 reads data regarding the fixed screen from the fixed screen data storage section 4 and writes it into the display data memory 4. Further, at the same time as this operation, the CPU 9 reads out information on each process device written in each process information area 13 of the process information file 5, and reads out information on each process device written in the display data memory 4 based on this information. Rewrite the displayed content.

In addition, in parallel with this operation, the display control unit 7 generates a read command at predetermined time intervals to read out one screen worth of display data written in the display data memory 6 and send it to the CR.
Display it on TB.

As described above, in this embodiment, the host computer 1o sends out only the changes in the process state, and the display device 11 creates a display screen by combining this change, the changes up to that point, and the fixed screen. Because
The amount of data transmitted from the host computer 10 side to the display device 11 side can be significantly reduced compared to the conventional one.

Further, in the embodiment described above, the host computer 1
0 to the format shown in FIG. 2, the conversion table 15 of the host computer 10 converts the unique number of the process equipment (for example, , DS, , DS2, . You can also let them do it. This makes it possible to further reduce the load on the host computer 10 side.

Furthermore, in the embodiment described above, the process description area 1
3 shows data X and Y indicating the X and Y positions of the process equipment.
However, instead of this, data X, Y that indicates the position of this process equipment at two points as shown in Fig. 5 (a) and (b) is used.
, data X', Y'), one point (data x,
y) and its length D.

(Effects of the Invention) As explained above, according to the present invention, the amount of data transferred from the host computer side to the display device side can be significantly reduced, thereby significantly reducing the load on the host computer. be able to.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing an embodiment of the display system according to the present invention, FIG. 2 is a schematic diagram showing an example of the format of change extraction data output from the host computer shown in FIG. 1, and FIG. FIG. 1 is a schematic diagram for explaining the process information file, FIG. 4 is a schematic diagram for explaining another embodiment of the display system according to the present invention, and FIGS. 5(a) and (b) are A schematic diagram for explaining other examples of the process information files shown in FIG. 1, FIG. 6(a)
, (b) are schematic diagrams for explaining other examples of the process information file shown in FIG. 1, and FIG. 7 is a block diagram showing an example of a conventional display system. 3... Input section (communication interface), 4... Fixed screen data storage section (fixed screen data memory), 5...
Change screen data storage section (process information file) 7...
・Display control unit, 8...Display device (CRT), 10...
Processing device (host computer). Patent applicant: Toyo Tsushinki Co., Ltd.

Claims (1)

[Claims] (1) A processing device that extracts state change information of the display target device from state information output by the display target device, a fixed screen data storage unit that stores data related to a fixed screen, and a state change information from the processing device. an input section that receives this when the input section is output; a change screen data storage section that stores state change information taken in by the input section;
A display control unit that displays on a display a display screen created based on the data stored in the variable screen data storage unit and the data stored in the fixed screen data storage unit. Characteristic display system.