JPS61267790A - Graphic display unit - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention] Human and industrial applications The present invention applies to electric power and gas installed over a wide area.

Graphic OR'I' on the terminal side of business processing equipment in fields where operational business is performed using equipment such as water supply 1 communication lines etc.
The present invention relates to a graphical display device connected to a display device, and in particular to a graphical display device characterized by a display method for equipment targeted for operation work.

Summary of B6 invention The present invention applies to electric power and gas installed over a wide area.

Graphic OR'L' on the terminal side of business processing equipment in fields where operational business is performed using equipment such as water supply 1 communication lines etc.
In a graphic display device that is connected to a display device, the center and scale of the display screen are stored at the request of the operator along with the name of the equipment specified when requesting the display of the mosquito screen, and the equipment name is added to the next display. By displaying it on the CRT monitor by cutting out the graphic information with the display center and scale that is memorized according to the instructions, at the start of the operation work, the display conditions corresponding to the equipment previously memorized only by the instruction of the equipment name can be used. This is a screen that can be easily obtained.

Hereinafter, the present invention will be described using an example of application to a power system, particularly a power distribution system.

C0 Conventional technology Graphic CRT display devices have traditionally been manufactured using CAD, OA
In the field of M, 0AFI, etc., it is mainly used in offline work such as creating and modifying figures, but recently, its use as a terminal device for online systems has been increasing.

For example, in a centralized power distribution system monitoring and control system, a central computer that functions as a master station processes a lot of information from a group of slave stations, but the human cognitive ability, judgment, and creativity that is essential for information processing through visual perception. A graphic OR'l' display device is provided that allows quick and accurate online processing using the .

In this centralized monitoring and control system, the graphic OR'l' display device serving as the terminal device is required to have the following two points in terms of functionality and performance compared to conventional devices.

(1) High-speed display: Good responsiveness is an essential condition for an online system.The process from display request to display completion must be performed quickly, and various display updates must be performed quickly.

(2) Wide area support: Since the online system operates on equipment installed in a wide area, it supports a wide display area and can display the necessary range according to display requests.

In order to meet these demands, this system employs a system configuration called an intelligent terminal type as a graphic display system.
Graphic CR with computer as shown
The T display device 1 is used as a terminal, and a host computer system 2 is connected to this terminal via a communication line. This host computer uses the data system 2 as a master station to collect various monitoring information from the slave stations in real time, and displays necessary display information on the graphic CRT display device 1.
A centralized monitoring control system is realized by a configuration in which commands from the graphic CRT display device 1 side and control information automatically processed by the host computer system 2 are transmitted from the host computer system 2 to the slave stations.

In this configuration, a distributed processing method is used in which the host computer system 2 performs a large amount of arithmetic processing or data processing, and the computer in the terminal-side graphic CRT display device 1 performs display processing, thereby improving responsiveness on the terminal side. The load on the host computer system 2 is also reduced. The graphic display process in the configuration shown in FIG. 2 will be described in detail below.

A graphic CRT display device 1 includes a CRT monitor 3 that performs refresh drawing using a raster scan display method, and uses a display processor 4 as a control center to display graphical information (line segments, etc.).

information such as symbols, characters, etc.) is stored in the segment buffer 51.

From the graphic information stored in the segment buffer 51, graphic information in a range (rectangular area determined by coordinate values) requested to be displayed is cut out. This cutting process includes a matrix calculation processing unit 5g that performs parallel translation and rotational transformation of the displayed figure, and a clipping processing unit 51 that removes the portion that protrudes from the displayable screen frame of the OR'l' monitor 3.
etc. are prepared, and 7 frame parts 7 corresponding to each line segment of the cut out figure information from the display position (coordinate position) are prepared.
A digital differential analysis (DDM) processing unit 54 is provided which develops the on/off information of the bits on the memory card 6.

The frame buffer 6 is physically a memory that has bits that correspond one-to-one to each pixel on the screen of the CRT monitor 3. For color display, it has multiple bit planes and uses a look-up table 7. to determine the display color. This will be explained with reference to FIG. The same figure shows 7 frame power 6
is 3 bitplanes + 1. Outside 2. In the case of sweet 3, the on/off of the bit corresponding to the segment variation 510 figure information is bit plane 4?1-%-4P3
Expanded as 0 combinations. Then, the display on the screen of the OR'I' monitor 3 is done by raster scanning the 7 frames x 7 and 6, and using the combination value of bit on of 1-sweet 3 as the address for each bit plane, lookup table 7
R (red), G ( according to the display color table defined in
The beam outputs of green) and B (blue) are given to the CRT monitor 3.

Returning to FIG. 2, the host computer system 2 uses the host computer 8 as a control center and divides data subjected to graphical information processing into an appropriate format as one processing function of online processing, and divides the data into an auxiliary storage device such as a magnetic disk. The graphic information in the range requested by the graphic CRT display device 1 is stored in the interface 10.11. The data is transmitted to the graphic CRT display device 1 through the communication line of the transmission line 12, and the received data is stored in the segment buffer 51 in the graphic CRT display device 1.

D0 Problems to be Solved by the Invention When the graphic OR'I' display device is used as a terminal device for a centralized supervision and control system for electric power systems and equipment, the above-mentioned (1)
Among the high-speed display of Since only a part of the equipment system is displayed due to restrictions, a function is provided to switch and display the necessary range according to the operator's request.

To display this necessary range of switching, for example, the operator specifies the names of distribution substations or distribution lines, determines the display center position and scale for these names in advance, and then displays the names starting from the requested display name. The center position and scale are retrieved, and a display request is made to the graphic CRT display device based on them.

In this way, when specifying a name and determining the display center position and scale for the name, the following conditions are established as initial settings within the host computer system.

(D-1) When specifying the name of a distribution substation. In this case, the display center position is set to the position where the building of the substation is located, and the scale is set to a large scale such as 1/4000. This is so that a distribution substation typically supplies power to a large number (10-20) of distribution lines and can display them on a monitor.

(D-2) When specifying the name of a power distribution line. In this case, the center position of the display is set to the position where the start-up equipment for the distribution line is located, and the scale is set to, for example, 1/20.00 in order to display the distribution line and the distribution lines in its vicinity on the monitor. .

In this way, the display center position and scale are determined as initial setting values, but this may not be appropriate for operational purposes.

For example, when specifying the name of a distribution line, it is not always the case that the start-up equipment for the distribution line is located in the center, so as shown in Figure 5(a), the start-up equipment based on the initial setting value is placed at the center of the monitor. This will result in inappropriate display if the equipment is spread out only to the right from the stand-up screen, and as a result, the display position as shown in Figure 5 (→ Requires modification operations.

Regarding the scale, since each distribution line has a different supply area, as shown in Fig. 5(c), the supply area of the distribution line is narrower than the tube surface of monitor 3 when the scale is set according to the initial setting, as shown in Fig. 5(c). The display becomes smaller.

At this time as well, the scale is changed so that the tube surface has an appropriate width as shown in FIG.

In this way, using only the initial setting values requires operations and functions to change and switch the center position and scale.

Next, in the centralized monitoring and control system for electric power systems and equipment, there is a need to change the display conditions as described below in order to carry out various operational tasks.

For various operational tasks such as accident recovery, normal operation, and maintenance, a subject is determined and the tasks are carried out under that subject. When performing work on a certain subject, depending on the type and cross-section of the work, a power distribution system diagram may be displayed and operated on the graphic OR'l' at a specific display center and scale, and then when starting work on the subject, You may need the same display center and scale as before.

In this case as well, it is necessary to move the display range or change the scale until an appropriate area is displayed, which results in complicated operations and delays in operational work.

Means and operation for solving the E0 problem In view of the above problems, the present invention stores the center and scale of the display screen of the power system displayed on the CRT monitor together with the system name, and stores the power system for the next operation. Equipped with a processing means to display on the CRT monitor by cutting out graphic information with the center and scale of the screen under the display conditions corresponding to the previously memorized name when the name of the system is instructed, for the second and subsequent operation operations. This allows you to directly obtain the screen under the previous display conditions by specifying the name.

F. Embodiment FIG. 1 shows a display switching/updating mode diagram in which the processing method of the present invention is applied to a power distribution system. In the diagram, the mark ・ indicates the main switch (or section switch), the mark 0 indicates the interlocking switch, the line segment connecting these switches indicates the distribution line, and the mark ■ indicates the start-up point of the distribution system. , the display screen on the CRT monitor is indicated by a diagonal block.

In FIG. 1, (a) shows that when the operator instructs the name of the distribution line, the host computer 8 gives graphic information to the graphic CRT display device 1 centered on the rising point of the name. 1 shows the state displayed on the OR'l' monitor 3 of No. 1. For this display state, assuming that the display screen required by the operator is at the position shown in Figure 1 (2), by giving sequential scroll instructions from (a) to (b), (b) K is displayed. Get the screen.

Similarly, in the case of subject display, after the range (a) is initially displayed, the display range is moved to the range (b) according to business needs.

At the time when this (→ range is being displayed), if the operator determines that he/she wants to directly display the same range the next time he/she makes a display request by specifying the name 9 subject, he/she issues a display condition change instruction.

As a result, the final display screen distance (center δB in FIG. 1(e))
and the reduction scale. Then, the next time a request is made to display the same strain name or subject, the center σ8 and scale of the display screen under the previous memorized display conditions are recalled for the name or subject to display the display screen under the previous display conditions. Display.

Therefore, for the first time, the display is changed and updated sequentially from the start-up point in response to the system name or subject command, but from the second time onwards, the system name or subject command is used to directly change the display screen under the previous display conditions. can be displayed.

In addition to the effects of the G1 invention, according to the present invention, the information necessary for displaying the screen under the previous display conditions is memorized by the operator's instructions, and the previous display can be performed only by specifying the system name or subject from the next time. Since the screen information under the conditions is directly extracted and displayed on the OR'l' monitor, it is possible to
To obtain a screen of an equipment part, it is possible to simplify operations by an operator and to simplify processing by a host computer and a display processor, thereby allowing smooth business operations.

[Brief explanation of drawings]

FIG. 1 is a diagram for explaining the display switching/updating mode of the power distribution system in the processing method of the present invention, FIG. 2 is a configuration diagram of the power system/equipment monitoring device, and FIG. 3 is the graphical information in FIG. 2. Bit expansion and color display processing explanatory diagram, Figure 4 is OR'
FIG. 5 is a diagram illustrating display graphics on the l' monitor, and FIG. 5 is a diagram illustrating display changes and switching modes. DESCRIPTION OF SYMBOLS 1... Graphic CRT display device, 2... Host computer system, 3. Working CRT monitor, 4...
- Display processor, 51 - Ring segment buffer, 5 Tomi... Matrix calculation processing unit, 53... Clipping processing unit, 54 - I) DA processing unit, 6e0
7 frame x 7 a, 7 aha lookup table,
8... Host computer, 9... Auxiliary storage device,
10.11...Interface, 12...Transmission path. Diagram 1 Hiton display truncated and drunken Suguchi No. 1: Table f

Claims (1)

[Claims] A graphic CRT display device is connected to the terminal side of business processing equipment in fields where operations are performed using equipment such as electric power, gas, water, communication lines, etc. installed over a wide area, and display items corresponding to the equipment are displayed. Display information consisting of a group of display items corresponding to map information such as groups, streets, and place names is stored in the storage device, and by specifying an area to be cut out and displayed from the stored display information, it is possible to display information within that area. In a graphic display device that displays equipment on a graphic CRT display device in correspondence with a map, the center and scale of the display screen of the equipment displayed on the CRT monitor are memorized together with its name, and the equipment can be used for the next operation. A graphical display characterized by comprising processing means for displaying graphic information on a CRT monitor by cutting out graphical information having a center and scale of the screen under display conditions corresponding to the name stored last time when a name is specified. Device.