JPS63201524A - Operator's console - Google Patents

Abstract

PURPOSE:To facilitate monitoring operation by dividing the screen of a color CRT longitudinally into eight, displaying each process name, operation state, and instantaneous value as a trend graph, and expanding an optional trend graph over the entire screen by button operation. CONSTITUTION:Each process controller 6 inputs the states and detected values of many control valves 9 and sensors 10 through an input/output processor 8 and a computer 7 processes them and sends their results out to a communication line 5. The CPU 4 of an operator's console 1 processes arrival signal data and an operator operates a keyboard 3 to display the data on a color CRT viewer 2. The CRT viewer 2 is divided longitudinally into eight areas and the instantaneous values of eight selected processes are normally displayed. When the operator operates the keyboard 3 to select a desired process, the trend graph of the process within a specific time is displayed over the entire screen of the CRT viewer 2. Consequently, information matching with plant operation is supplied to the operator, and the plant is speedily and accurately operated.

Description

Detailed Description of the Invention [Field of Industrial Application] The present invention is applicable to process instrumentation equipment that uses a man-machine device consisting of a display device such as a color CRT device and an operation device such as a keyboard. This article relates to an operator's console suitable for monitoring information in real time.

(Conventional technology) In conventional instrumentation systems, in order to obtain trend information of process data such as temperature and pressure.

As described in Japanese Patent Application Laid-Open No. 60-159792, a dedicated trend screen is displayed in the CR of the operator's console.
This has been done by displaying it on the T screen. In conventional methods, the trend screen for monitoring trends in each process data was a dedicated screen that displayed only trend information, so it was displayed at the same time as the controllers, indicators, and other instruments used for normal process monitoring. Operator's console CRT
Mixed displays cannot be displayed on the screen, and there is no consideration given to the need to constantly provide the operator with complex information for plant operation. Monitored instantaneous data and trend data. In addition, in conventional equipment, instruments that display trends at the same level as other instruments were not considered as a function of the operator's console, so it was usually necessary to operate multiple keys to obtain trend information. The operation is different from that for displaying other instruments, and no consideration was given to the uniformity of operations for plant operation.

[Problem that the invention seeks to solve]

In the above conventional technology, when monitoring trend data on the operator's console in order to understand trends in data such as temperature and pressure at each measurement point in the process, it is usually done from the instrument display screen that is monitoring the process. It was necessary to perform multiple key operations and switch the display screen to the trend display screen for monitoring. In other words, since a trend recorder did not exist as a function of the operator's console, it was not possible to comprehensively monitor the process by displaying it in combination with other instruments on the same CRT screen, and the screen had to be switched frequently to monitor the process. There was the inconvenience of having to do so. Especially if the process is large, it is necessary to monitor hundreds of process values, which can sometimes lead to operational confusion.

An object of the present invention is to have a trend recorder in the operator's console, to enable mixed display of the trend recorder and other instruments, and to display composite information for plant operation, that is, instantaneous information and trend information, on the same screen. to the operator at the same time, and also provide C on the operator's console.
By making it possible to display the detailed trend screen corresponding to the trend recorder displayed on the RT screen with one-touch key operation, you can monitor detailed trend data that cannot be obtained with the trend recorder alone. To provide an operator's console capable of simplifying display switching operations on a screen.

[Means for solving problems]

The above purpose is to display a color CRT that displays the process operating status.
The color CRT device has eight display areas on the display screen of the color CRT device, the process status is displayed in each display area, and the operation device is made to correspond to each divided area. On the operator's console, which can be directly operated using This is achieved by arranging the display of a detailed trend graph extending over the entire screen by selecting a divided area with its predetermined operating device.

[Effect]

According to the operator's console, which has a trend recorder, the trend recorder, like other controllers, indicator/alarm meters, and other instruments, is displayed on a screen display area divided into eight areas, allowing for constant monitoring.

Increased ability to monitor processes through the operator's console. In addition, the data for displaying the trend recorder uses the latest part of the display data on the detailed trend screen, or sparsely sampled data, so no unnecessary storage space is used. In addition, the single point selection key corresponds one-to-one to the display area divided into the eight areas mentioned above, so if you want to obtain detailed trend information as needed, you can quickly change the screen with one-touch operation. The switchability improves usability and reduces human error in key operations.

〔Example〕

The present invention will be explained below based on an illustrated embodiment.

FIG. 1 is a system configuration diagram of an embodiment of the present invention,
FIG. 2 shows the software configuration of the trend recorder, and FIG. 3 shows an example of the trend recorder displayed on the CRT of the operator's console. Process operators use the process monitoring and control system shown in FIG. 1 to monitor and control a number of process values, such as temperature, pressure, and flow rates. Here, the operator's console 1 is a computer used by the operator to monitor process trends and control status of the process.
Keys for switching the screen displayed on RT Pure 2 and CRT Pure 2 to the screen required by the operator, keys for changing process control target values (set values), or many controls within a process. It has a keyboard 3 consisting of keys for opening and closing the valve 9 and the like. Its main functions are process status monitoring and operation of control valves 9, etc., and is managed by a built-in management computer 4. Process information such as temperature and pressure is obtained by receiving signals from hundreds of sensors 10 at the input/output processing device 8 of the process control device 6.
It is processed by the control computer 7 and sent through the communication line 5 to the management computer 4 built into the operator's console 1. Such instantaneous process information is processed by the computer 4 and displayed on the CRT Pure 1 as a process value in the form of an instrument image.

For process monitoring, in addition to instantaneous information such as one or more types of information, trend information from the present to the past is also required. This is because the operator needs to know whether the temperature or pressure of the process is rising, falling, or stable, and must operate accordingly. That is, in order for an operator to monitor a process, it is necessary to know the instantaneous value of the process and its trend. However, according to the prior art, process trends are stored as instantaneous data by the management computer 4 built into the operator's console 1 shown in FIG. 1, and displayed on the CRT Pure 1 as a trend screen 11 as shown in FIG. Although it can be displayed,
The instrument display screen 12, which displays the instantaneous values of the process, is completely separate from the instrument display screen 12, and the operator cannot monitor instantaneous information and trend information at the same time. Flow rate 1 in process 17
3. Temperature 14. Pressure15. He was monitoring Level 16 and other things. At this time, if you want to switch the screen from the instrument display screen 12 to the trend screen 11, press the trend selection key 18, refer to the trend screen menu, and press the corresponding page number key (1 in this example) 19 on the keyboard of the operator's console. I was typing more. Furthermore, to display the instrument display screen 12 again, press the instrument display selection key 20, refer to the menu on the instrument display screen, and enter the corresponding page number (2 in this example) 21 from the keyboard of the operator's console. According to the trend recorder according to the present invention, the above-mentioned problems can be solved. It is located in the same position as the instrument that displays.

Since they can be displayed on the same screen, instantaneous information and trend information can be monitored simultaneously without the operator having to switch screens for process monitoring. Additionally, since there is a trend screen for obtaining detailed trend information for each trend recorder, it is possible to switch screens with a single touch operation. The functions and structure of this trend recorder are shown in FIGS. 2 and 3. The CRT Pure 31 shown in FIG.
This CRT Pure 31 corresponds to the conventional CRT Pure 2, and has a display area 32 divided into eight areas, in which a trend recorder is displayed along with other various instruments. The display of the trend recorder is controlled by the CRT display control unit 35.
With reference to the screen registration display file 36, the trend recorder data selection section 40 selects the corresponding trend recorder data from the trend data storage section 39 and stores it in the trend recorder display data area 43.

Here, the trend data storage section 39 is data for displaying a detailed trend screen, and is refreshed at a certain fixed time such as 1 second, and the trend recorder display data area 43 is also refreshed at the same cycle. be exposed. In Figure 2, the selection of trend recorder data is
As shown in the trend recorder display data 43, a total of m pieces of data are collected from the trend data storage unit 41, such as the 1st to 11th, 21st, and (Ion-9)th data, which are the latest data. It is supposed to be selected once in every 10 samples.

It is also possible to select data once every 20 samples or to select up to 'm pieces of the latest data. Therefore, the trend recorder can select and display the most suitable data for comprehensively monitoring the complex information of the process. Information on these data selections is registered in the screen display registration file 36, and data is stored in the trend recorder display area 43 according to this information. The data stored in the trend recorder area 43 is output to the eight divided display areas 32 of the CRT Pure 31 via the CRT display control section 35 and displayed as trend graph data on the trend recorder.

The keyboard 33 also has a one-point selection key 34 that corresponds one-to-one in position to the display area 32 divided into eight areas where the trend recorder is displayed. The signal output from this keyboard 33 passes through the key code analysis section 37, and if it corresponds to the area where the trend recorder is displayed here, it corresponds to the trend recorder specified by the keyboard 33. The data is passed to the display screen determination unit 38 that determines the detailed trend screen, and the data of the corresponding detailed trend screen is called from the trend data storage unit 39.
A detailed trend screen that spreads over the entire CRT Pure 31 is displayed via the CRT display control section 35. Further, the data in the trend data storage section 39 is refreshed by constantly collecting process data by the trend data collection section 41. Here, the trend data collection section 41 normally exists in the control computer 9 of the process control device 6 shown in FIG. However, some systems share the management computer 7 shown in FIG. 1 due to system configuration. Further, the trend data storage section 39 normally exists on the main memory of the management computer of the operator's console 1 shown in FIG. 1, and old data exceeding the memory capacity is stored in the storage device 42. In addition, the trend recorder has CR as shown in Figure 3.
It can be displayed in any eight divided areas of the T screen 51 in combination with other controllers 56, and a trend display area 532 for displaying trend graphs.A display indicating the time scale of the trend graph being displayed. time scale 5
4. It also has a trend recording point name 55 that displays the signal name of the trend graph being displayed. Trend recorder data in trend display area 53 and trend record name 5
The names of the measurement points 5 correspond to each other by their display colors, making it possible to easily identify the signals. Further, the trend recorder can be expanded to a detailed trend graph by pressing the single point selection key 58 on the keyboard 57 corresponding to the divided area where the trend recorder is being displayed. The contents are developed on a detailed trend screen as shown in the CRT screen 51. On the detailed trend screen, similar to the trend recorder, detailed trend data and detailed trend data name 6 are displayed in the detailed trend display area 59.
0 corresponds to its display color, and the signal can be easily identified. The detailed trend screen also has a screen scrolling function and a digital display function for trend data, providing many functions necessary for process monitoring.

〔Effect of the invention〕

As is clear from the above explanation, according to the present invention, a trend recorder can be displayed in combination with instruments such as a controller and an indicator/reporter on the CRT screen of the same operator's console, so that composite information suitable for plant operation can be displayed. is provided to the operator, enabling quick and accurate plant operation.

Furthermore, since the data for display on the trend recorder is part of the data for displaying the trend detail screen, no special storage area is required and unnecessary memory is not used. In addition, detailed information that cannot be obtained with a trend recorder alone can be accessed using the same method as obtaining detailed information from other instruments; the one-point selection key switches to the trend detail screen with a single touch, making it easy to operate for process monitoring. This has the effect of making it easier.

[Brief explanation of the drawing]

FIG. 1 is a system configuration diagram of an embodiment of the present invention, FIG. 2 is a software configuration diagram of a trend recorder, and FIG. 3 is an explanatory diagram showing an example of a trend recorder displayed on a CRT of an operator's console. FIG. 4 is a block diagram showing the structure of a conventional operator's console. DESCRIPTION OF SYMBOLS 1... Operator's console, 2... CRT pure, 3... Keyboard, 4... Management computer, 5... Communication line, 6... Process control device, 7...
...Control computer, 8...Input/output processing device, 9
...Control valve, 10...Sensor, 31...
CRT pure. 32... Display area, 33... Keyboard, 34...
...1 point selection key, 35...CRT display control section, 36
...Screen display registration file, 37...Key code analysis section. 38...Display screen determination section, 39...Trend data storage section, 40...Trend recorder data selection section, 41
...Trend data collection unit, 42...Storage device, 4
3...Data area for trend recorder display, 51...
・CRT screen (detailed trend screen), 52...CRT
Screen (composite monitoring screen), 53... Trend display area, 54... Display time scale, 55... Trend recording point name, 56... Controller, 57... Keyboard,
58...1 point selection key, 59...Detailed trend display Fig. 1 Fig. 3

Claims (1)

[Claims] 1. Equipped with a color CRT device that displays the process operating status and a corresponding dedicated operating device,
In the operator's console, which has eight display areas on the display screen of the T device and displays the process status in each display area, and allows direct operation by associating an operating device with each divided area, In addition to displaying multiple trend graphs in different colors, signal identification is performed by displaying signal names in the same area as the curve color of the graph, and by selecting this divided area with a predetermined operating device, the entire screen can be displayed. An operator's console that is characterized by displaying a trend graph with detailed information.