JPH08292810A - Display processor of centralized monitoring system - Google Patents

Abstract

PURPOSE: To provide a CRT device with a screen operation administering function and to increase the response speed of a screen display irrelevantly to the load on a CPU side as to the centralized monitoring system for a plant, etc., which has the CPU that gathers display data from a monitored object and stores the data in a memory M and the CRT device as a man-machine interface. CONSTITUTION: The CPU repeatedly stores the display data, gathered through a process 01, in the memory M by the kinds of screens to update the display data in the memory M. When key operation for requesting a screen display is carried out in a process 02, the CRT device analyzes the contents of the key operation to determine the kind of a display screen and reads the display data of the corresponding screen out of the memory M to display the screen. At this time, the CRT device and CPU need out communicate with each other for the screen display as before.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a central processing unit (hereinafter abbreviated as CPU) for collecting display data from a monitored object such as a plant, a key for operating and inputting commands to the central processing unit, and a screen display. The present invention relates to a device for performing particularly responsive display processing in a centralized monitoring system equipped with a CRT device as a man-machine interface having a CRT.

In the following drawings, the same reference numerals indicate the same or corresponding parts.

[0003]

2. Description of the Related Art FIG. 3 is a simple flowchart showing an example of a monitor screen display process in a conventional plant centralized monitoring system. In the figure, 01 indicates processing on the CPU side, 02 indicates processing on the CRT side, 311 to 314 indicate steps on the CPU side processing 01, and 321 to 323 indicate steps on the CRT device side processing 02. M is CPU and C
This is a memory that can be accessed with the RT device.

Next, the processing flow of FIG. 3 will be described. CRT
When the device receives a screen display request by a key operation of a plant supervisor or the like (321), this key operation signal is sent to the CPU, and the CPU analyzes this key operation signal (31
1) The type of screen to be displayed is determined (312), the data to be displayed on this screen is collected, and the collected display data is stored in a predetermined area of the memory M (313). Then, a screen display request is sent to the CRT device (314).

Based on this screen display request, the CRT device reads the display data from the memory M (322) and displays the screen (323). Here, the dashed-dotted line portion 1 in the CPU-side process 01 is a process in which the CPU manages the screen operation of the CRT device. FIG. 4 is a simple flowchart showing another example (automatic display process) of the conventional display process of the plant monitoring screen. In the figure, reference numeral 03 indicates a plant, and 411 to 4
Reference numeral 15 denotes steps of the CPU side processing 01, 421 and 422.
Indicates a step of the CRT device side process 02, and 431 indicates a step of occurrence of an event such as a failure in the plant 03.

Next, the processing flow of FIG. 4 will be described. When an event occurs in the plant 03 (431), the CPU analyzes this event (411) and determines the type of screen to be displayed on the CRT (412). Then, the data necessary for this screen display is collected, and the collected display data is stored in a predetermined area of the memory M (413). Next, the CPU checks whether or not the CRT device can display a screen (whether there is any abnormality) (414), and sends a screen display request to the CRT device (415).

Based on this screen display request, the CRT device reads the display data in the memory M (421) and displays the screen (422). Here, the dashed-dotted line portion 1 in the CRT side process 01 is a process in which the CPU manages the screen operation of the CRT device.

[0008]

In the conventional centralized plant monitoring system, as described with reference to FIG. 3, it is necessary to determine the type of screen to be displayed by the CRT device and edit the display data by the CR.
All are executed on the CPU side according to the operation on the T device. Further, as described with reference to FIG. 4, even in the case of automatically displaying the screen related to the event that has occurred in the plant, the CPU side executes the processes such as the determination of the type of the screen, the edit of the display data, and the determination of the display timing. There is.

However, in this conventional screen display processing method, the CPU manages the screen operation of the CRT device.
Each time the screen is operated between the CPU and the CRT device,
Since communication is required between the two, there is a problem that the response speed of the screen operation easily deteriorates according to the load on the CPU.
Therefore, it is an object of the present invention to provide a display processing device of a centralized monitoring system capable of ensuring the response performance of the screen operation of the CRT device regardless of the load of the CPU.

[0010]

To solve the above-mentioned problems, a central processing unit that collects display data from a monitoring target (such as a plant 03) and stores it in a memory (M), and a command for this central processing unit A man-machine interface device having operation input means (keys and the like) for operating and inputting etc., and screen display means for reading display data stored in the memory based on a display command and displaying it on a screen (CRT or the like) ( In a centralized monitoring system (such as a plant) equipped with a CRT device, etc., in the display processing device according to claim 1, the central processing device always stores the collected display data in the memory for each screen type. The display data in the memory is repeatedly updated, and the man-machine interface device operates the operation input means to indicate a screen display request. When was performed to determine the type of screen to be displayed by analyzing the operation, to have a means for reading the screen display data appropriate for the memory to the screen display means.

According to another aspect of the present invention, in the display processing device, when the central processing unit causes an event to occur in the monitoring target,
The man-machine interface device is notified of this event, the display data relating to this event is collected, and the corresponding display data in the memory is updated for each screen type. At least the type of screen to be displayed is determined based on the elephant notification, and the screen display means has means for reading the corresponding display data in the memory and displaying the screen.

[0012]

When the screen operation is managed by the CRT device side instead of the CPU and there is a screen to be automatically displayed, the C
By notifying the CRT device side of the event that occurred in the plant from the PU, the CR can be performed regardless of the CPU load.
The response performance of the screen operation of the T device is ensured.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is a simple flow chart of a display process of a plant monitoring screen as an embodiment of the invention according to claim 1.
It corresponds to. In the figure, 111 indicates the steps of the CPU side process 01, and 121 to 125 indicate the steps of the CRT device side process 02.

Next, the flow of FIG. 1 will be described. The CPU always collects display data according to the screen type at its own timing, stores the display data in predetermined areas of the memory M, which are predetermined for each screen type, and stores the display data in the respective areas of the memory M last time. The processing for updating the displayed data is repeatedly executed (111). On the other hand, when the CRT device accepts the key operation of the screen display request (121), it analyzes the key operation signal (122) and determines the screen type (123). Then, the corresponding display data is read from the display data storage area of the memory M corresponding to the determined screen type (12
4) The screen is displayed (125).

As described above, in the embodiment shown in FIG. 1, a series of processes from the key operation reception of the screen display request to the screen display process is CR.
This is executed on the T device side. Since the display data collecting / updating process is executed on the CPU side at its own timing, the processing load on the CPU side has no influence on the response speed of the screen display process. Note that the alternate long and short dash line portion 2 in the CRT device side process 02 of FIG. 1 is the screen operation management process.

FIG. 2 is a simple flow chart of the automatic display processing of the related screens associated with the occurrence of an event in the plant as an embodiment of the invention related to claim 2, and corresponds to FIG.
In the figure, 211 and 212 indicate steps of the CPU-side process 01, 221-224 indicate steps of the CRT device-side process 02, and 231 indicates steps of event occurrence in the plant 03.

Next, the flow of FIG. 2 will be described. Plant 03
When an event occurs in (231), the CPU sends the event to C
The RT device is notified (211), and each display data area that is predetermined for each screen type of the memory M is updated with the display data regarding this event (212). On the other hand, CRT
Based on the event notification from the CPU, the device checks whether or not it can display itself (221) and determines the type of display screen (222). Then, the display data is read from the display data area of the memory M corresponding to this screen type (223),
The screen is displayed (224).

As described above, in FIG.
Since the U side only updates the display data and communicates with the CRT device, the influence of the processing load on the CPU side on the series of processes on the CRT side is limited, and C
Since the processing is executed in parallel on the PU side and the CRT device side,
The time required from the occurrence of an event to the completion of screen display is also shortened as compared with the conventional method described in FIG.

It should be noted that the alternate long and short dash line portion 2 in the CRT device side process 02 of FIG. 2 is the screen operation process.

[0020]

According to the present invention, since the CRT device side is provided with the screen operation management process, the influence of the CPU load in the process related to the screen operation is suppressed, and a constant response speed can always be maintained. . Further, if the parallel processing is appropriately performed as if the processing corresponding to the event that occurred in the plant was executed in parallel by the CPU and the CRT device, it is possible to reduce the processing time required for the entire system.

Further, even when the screen operation display processing is newly developed or modified, this work can be performed independently of the CPU, so that the development period can be shortened and the system in operation can be shortened. It is a thing.

[Brief description of drawings]

FIG. 1 is a simple flowchart of screen display processing as an embodiment of the invention according to claim 1.

FIG. 2 is a simple flowchart of screen display processing as an embodiment of the invention according to claim 2;

FIG. 3 is a conventional flowchart corresponding to FIG.

FIG. 4 is a conventional flowchart corresponding to FIG.

[Explanation of symbols]

 01 CPU side processing 02 CRT device side processing 03 Plant M memory

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Shinichi Sakaguchi 1 Fuji Town, Hino City, Tokyo Within Fujifacom Control Co., Ltd. (72) Inventor Junko Matsuoka 1 Fuji Town, Hino City, Tokyo Fuji Electric Mycon Engineering Co., Ltd. Within

Claims (2)

[Claims] 1. A central processing unit for collecting display data from an object to be monitored and storing it in a memory, operation input means for inputting a command or the like to the central processing unit, and the central processing unit stored in the memory based on a display command. In a centralized monitoring system including a man-machine interface device having screen display means for displaying the display data on a read screen, the central processing unit always stores the collected display data in the memory for each screen type. The display data in the memory is repeatedly updated, and when the operation input means performs an operation indicating a screen display request, the man-machine interface device analyzes the operation and determines the type of the screen to be displayed. The screen display means has means for reading the corresponding display data of the memory and displaying the screen. Display processing unit of the centralized monitoring system to. 2. A central processing unit for collecting display data from an object to be monitored and storing it in a memory, operation input means for operating and inputting a command or the like to the central processing unit, and stored in the memory based on a display command. In a centralized monitoring system including a man-machine interface device having screen display means for displaying display data on a reading screen, the central processing unit is configured to notify the man-machine interface device when an event occurs in the monitoring target. While notifying an event, collecting the display data related to this event and updating the corresponding display data in the memory for each type of screen, the man-machine interface device at least based on the notification of the event Determine the type of screen to display,
A display processing device of a centralized monitoring system, wherein the screen display means has means for reading the corresponding display data of the memory and displaying the screen.