JPS6346517A - Monitor control computer system - Google Patents

Abstract

PURPOSE:To analyze the generating factors and details of phenomena by recording the monitoring image of a prescribed phenomena produced to the facilities of a plant, etc. for each frame and before and after occurrence of said phenomenon. CONSTITUTION:In a system working mode the monitoring video information is supplied to a buffer frame memory 31 from an ITV 12 via a video switcher 24 and an A/D converter 25. The memory 31 stores temporarily the received video information for each frame and at the same time erases successively in the order of older ones. While the signals of the monitoring video information are continuously recorded by a recorder 32 via the converter 25. These recorded images are equal to the collection of frame pictures, e.g., the moving pictures which are recorded continuously on a magnetic tape, etc. every 60 sheets per second. These pictures are held in response to the designated memory area of the CPU 1 and by an amount equal to an optional time value with trace-back from a present time point. While the recorder 32 works at a time point when a prescribed phenomenon occurs and many frame pictures are preserved up to said time point. Then the video information obtained after said time point are recorded in a different area. Thus the video recording is possible before and after occurrence of the phenomenon.

Description

[Detailed Description of the Invention] [Industrial Application Field] This invention provides an IT filter for a supervisory control computer system that displays supervisory control information of equipment such as a plant as well as surveillance images of the equipment on a display device. ] FIG. 2 is a block connection diagram showing a conventional supervisory control system. As a display device, there is a television monitor; 4 is an input/output unit connected to the process bus 9 through a unit 5; 6 is a process input/output unit connected to the process bus 9; 8 is a transmission unit; This is an input/output signal transmission line connected to the process bus 9 via an interface card.

In addition, a video monitoring system for equipment, etc. is provided independently from the monitoring control computer system, and this system includes a plurality of industrial television cameras 12 for monitoring equipment for each process.
and a camera input signal switch 11 that selects the output of these industrial television cameras 12 and inputs it to a plurality of industrial television monitors 10.

Next, the operation will be explained.

Input information from systems and equipment of various plants or output information for controlling various plants is exchanged by the central processing unit 1 with the process input/output unit 6 and transmission line 8 through the transmission interface card 7. . At this time, a plant status display signal is input from the input/output crab unit 5 to the large illumination panel 4, and
Graphics are displayed on the television monitor 2 via the monitor interface 6. Note that various control signals can also be entered manually from the keyboard on the television monitor 2 side. On the other hand, images of equipment, etc. are obtained from an industrial television camera 12 in a video monitoring system that is separate from the computer information monitoring control computer system, and the output is sent to any industrial television monitor 10 by a switch 11. I am trying to input it selectively and display it.

[Problem that the invention seeks to solve]

Conventional supervisory control computer systems are configured as described above, so in order to discover abnormalities in systems and equipment,
The screen of the display device must be constantly monitored, and the detailed surveillance images on the screen cannot be used to later analyze in detail the failure status of the equipment, etc., or the causes and circumstances of the various events that have occurred. There was a problem.

This invention was made in order to solve the above-mentioned problems.When a predetermined event occurs in a process in equipment, etc., it is possible to record and save surveillance video from before and after this point. The purpose of this project is to obtain a monitoring and control computer system that can analyze the causes and circumstances of the occurrence of events using this recorded and recorded video surveillance.

[Means for solving problems]

A supervisory control computer system according to the present invention has a supervisory control computer equipped with a central processing unit for monitoring and controlling a system or equipment and a display device for displaying the supervisory control information, and has a computer for monitoring and controlling the above equipment, etc. An industrial television camera is installed in the LC [ It is made up of nine things.

[Effect]

The recording device according to the present invention functions to record surveillance video of a predetermined event occurring in equipment such as a plant in frame units before and after the occurrence of the event, and reproduces this recorded content on a display device. Φ acts to enable analysis of the causes and circumstances of the occurrence of the event.

〔Example〕

An embodiment of the present invention will be described below with reference to the drawings.

In FIG. 1, 21 is a large display device that also serves as an illumination panel, and is driven by a display interface controller 22 that serves as a display controller. The display interface controller 22 receives a video control signal from the process bus 9 and a video signal from the video path 23, and further applies specific processing to the video signal and inputs it to the display device 21. It looks like this. 24 is a video switcher which switches a plurality of industrial video cameras 1 according to instructions from the central processing unit 1;
Switch and select the video input signal input from 2. 25
26 is a CRT controller as a display controller, and 27 is a television monitor as a display device for displaying a natural color image.

Further, 61 is a buffer frame memory which takes in a video input signal from the video bus 26 and stores it in units of frames in accordance with a command given from the central processing unit 1 through the process path 9, and has a digital-to-analog converter inside. Reference numeral 32 denotes a recorder for recording the video input signal as a continuous moving picture image frame by frame. In addition, the above video input signal is Todeo Bus 2.
3 to the respective controllers 22 and 26, and special effect commands for images are given from the central processing unit 1 through the process bus 9. Note that other blocks that are the same as those shown in FIG. 3 are given the same reference numerals, and redundant explanation thereof will be omitted.

Next, the operation will be explained.

First, input information from various plants and output information for control are not exchanged with the process input/output unit 6 or the transmission line 8 by the central processing unit 1.
Monitoring control information is graphically displayed on the monitor 1 and the television monitor 27. In this respect, the operation is substantially the same as the conventional operation.

On the other hand, a plurality of monitoring video signals of equipment etc. captured by the industrial television camera 12 are processed according to instructions from the central processing unit 1.
The selected one of these is further converted into a digital signal by the analog/0 digital converter 25 and transmitted to the video bus 26. The monitoring video signal thus transmitted through the video bus 25V is sent to the %CRT controller 26. Interface controller 22 for displaying
In accordance with instructions from the central processing unit 1, each controller 26, 22 transmits the video information 14, monitoring video information of the equipment, etc. via the transmission line 8 described above. The input information of the above-mentioned equipment obtained through the process is inputted to the television monitor 27 and the display device 21 with special effects added to each of the input information. This special effect can be applied, for example, to the above surveillance video information and
- input information on the same screen, i.e. on the same TV monitor 27? It can be displayed on the display device 21 temporally back and forth (alternately), or it can be divided into left and right halves, '1 bottom halves',
Obtained by simultaneously displaying the divided parts using a method such as dividing into four or inserting a part 2) c.

In this way, the display of plant status monitoring information using the convenience store tag graphic and the monitoring video information of plant equipment that requires monitoring can be projected simultaneously on the same display device, alternately or on separate screens. be able to.

On the other hand, while the computer system is in operation, the industrial television camera 12 is connected to the video switcher 24 and the analog 0
Surveillance video information is input to the buffer 7 frame memory 61 2 via the digital converter 25 . In the buffer memory 61, the monitored video information is temporarily stored in frame units, and the information already recorded in the buffer memory 61 is erased 11 times starting from the oldest one. Further, the surveillance video information signal recorded in the batsa memory 61 in units of frames is continuously recorded in the recorder 52 through the binary digital to analog converter 25. The video recorded here is a collection of frame images, for example, a moving image continuously recorded at 60 frames per second on a magnetic tape, etc.
An arbitrary amount of time is stored retroactively from the current time according to the designated storage area of the central processing unit.

The recording of the surveillance video information by the recorder 32 is carried out at the time when a predetermined event occurs in the process of the equipment, etc. Several frames of the surveillance video information up to this point are recorded (stored). By recording the surveillance video information f-1 after that point as a frame image in a separate area, the video records before and after the occurrence of the event can be recorded. In the above example,
Recording machine 32! 2 disc cameras can be used, allowing both still images and moving images to be recorded.

〔Effect of the invention〕

As described above, the present invention has 1. In addition, the system is configured so that visual images of predetermined events that occur in equipment such as plants can be recorded in units of 71 before and after the occurrence of the event. By reproducing the above, the cause and circumstances of the event can be analyzed very easily4).

[Brief explanation of drawings]

FIG. 1 is a block connection diagram of seven stems of a supervisory control computer according to an embodiment of the present invention, and FIG. 2 is a block diagram of a conventional supervisory control computer system. 1 is a central processing unit, 12 is an industrial television camera, 21 is a display device, 27 is a television monitor, 61 is a buffer frame memory, and 62 is a recorder. In addition, in the figures, the same reference numerals indicate the same or equivalent parts. Patent applicant: Mitsubishi Electric Corporation 2'~-m--. Agent Patent Attorney 1) Hiroshi Sawa' 1
(2 others) Figure 1 I2: Telephoto camera 27: TV monitor 32: Recording location

Claims (3)

[Claims] (1) A central processing unit that monitors and controls equipment such as a plant, a supervisory control computer that has a display device that displays the supervisory control information, an industrial television camera installed for video monitoring of the equipment, and a central processing unit that monitors and controls equipment such as a plant; A monitoring control computer system comprising: a recording device that records surveillance images of the equipment, etc. obtained by a television camera for use before and after a predetermined event occurs in a process of the equipment, etc. (2) Claim 1, characterized in that the recording device is configured to constantly write new monitoring images from an industrial television camera while sequentially erasing old monitoring images that have already been written. supervisory control computer system. (3) The monitoring control computer system according to claim 1, wherein the recording device sequentially and continuously records moving images, which are monitoring images from an industrial television camera, while converting them into frame images.