JP2006163468A - Monitoring device and monitoring screen display method using operation history reduction screen - Google Patents

Abstract

An object of the present invention is to provide a monitoring device that allows an operator to easily and quickly redisplay a desired monitoring screen, and a monitoring screen operation method using an operation history reduction screen.
SOLUTION: An arithmetic processing unit 2 is a monitoring device, a monitoring screen selection operation history management unit 23 for managing an operation history of a selected monitoring screen, and a storage unit 3 based on the selected monitoring screen. The monitor screen information processing means 24 for extracting the monitor screen information to be displayed, the monitor screen reduction processing means 25 for storing the reduced screen 430 of the monitor screen 420 in the order of the selected operation history, and the monitor screen information output and the history order of the information are stored. Screen display processing means 26 for splitting and displaying the operation history reduced screen output on the display screen of the display device 4 in a predetermined format, and selecting the operation history reduced screen 430 to redisplay the monitoring screen 420. Features.
[Selection] Figure 1

Description

  The present invention relates to a monitoring device of a monitoring system and a display method of the monitoring screen, and more particularly to a monitoring device that redisplays a monitoring screen from a history of the displayed monitoring screen, and a method of redisplaying a monitoring screen using an operation history reduction screen.

  In a plant monitoring apparatus, conventionally, two methods are used as a method for displaying a monitoring screen required by an operator.

  One is a method of displaying a screen by selecting a screen name from a preset monitor screen menu screen, and the other is a selection operation for a specific area on the monitoring screen, This is a method of displaying a monitoring screen associated with the area.

  All of these monitoring screens have a hierarchical structure. To switch the display to the target monitoring screen, execute a tree-structured operation command and switch from the upper layer screen to the lower layer screen sequentially. (For example, refer to Patent Document 1).

  In this switching method, the display screen of the CRT display device is divided into a CRT operation column and various graphic / graph / guidance display screens.

  Then, a return command and an advance command are provided in the command in the CRT operation column, the operation history is stored when the command is sequentially selected from the uppermost display screen and the lower layer display screen is reached, and the return command is stored. Each time an instruction is issued, the operation screen is referred to and the display screen is sequentially switched to the upper layer display screen. Each time an advance command is issued, the operation screen is again referred to and the display screen is sequentially switched to the lower layer display screen. Has been switched to.

  Thus, it is disclosed that the command selection process up to the current position and the display screen are referred to instantaneously, and the current position in the screen system, that is, the command system can be quickly confirmed.

  As another display screen switching method, a selection operation is performed on a specific area such as a graphics display screen of a process flow diagram, and a menu screen associated with the area is displayed. (For example, refer to Patent Document 2).

In this method, the tag associated with each item in the menu screen list display and the display target screen (name) are associated in advance as a list, and the display target screen is called using the tag as a key. A supervisory control device that enables prompt provision of information to an employee is disclosed.
Japanese Unexamined Patent Publication No. 4-128787 (first page, FIG. 1) JP 2002-182739 A (first page, FIG. 1)

  In a monitoring system, a series of monitoring screen selection operations may involve an operation of switching to different monitoring screens a plurality of times, and it may be necessary to urgently redisplay a previously displayed screen in an emergency.

  However, in the display screen switching method disclosed in Patent Document 1, even when the target screen is to be urgently displayed again, “return” and “forward” commands are sequentially executed in each layer of the hierarchical tree. There is a problem that it takes a long time to display the target screen because the operation reaches the target screen.

  In other words, in the redisplay of the screen switching method that requires the “return” button as described above, when redisplaying a past screen that was displayed several times before the desired screen, multiple operations are required to redisplay. Or you may not know how many times you need to press the "Return" button to display the desired screen. Takes time.

  Further, in the method disclosed in Patent Document 2, it always takes an operation time since an operation for displaying a monitoring screen list associated with a tag (number) is performed and a target screen is selected from the display of the monitoring screen list. In addition, if the screen on which the screen name is displayed is not accurately expressed, there is a possibility that the wrong screen is selected.

  For this reason, in an emergency situation, there is a problem in that it takes time to display a target monitoring screen and a quick screen display cannot be performed.

  Such a conventional monitoring screen selection operation is a method in which a menu screen is expanded and a past display screen related to the target device is searched and displayed based on the memory and judgment of the operator. Since there is also a mistake, it takes time to display the target monitoring screen, so that there is a problem that the screen cannot be displayed quickly.

  The present invention has been made to solve the above problems, and provides a monitoring device that allows an operator to easily and quickly re-display a desired monitoring screen, and a method for operating a monitoring screen using an operation history reduction screen. The purpose is to provide.

  To achieve the above object, a monitoring apparatus according to claim 1 of the present invention stores monitoring screen information of a monitoring system as a database, and selects and processes monitoring screen information to be displayed from the stored monitoring screen information database. Computation processing means, storage means for storing the monitoring screen information, and a display means for inputting a monitoring screen selection signal to be displayed on the computation processing means and displaying the monitoring screen, the computation processing means comprises: The monitoring screen selection operation history management means for managing the operation history of the monitoring screen selected and operated by the display means, and the monitoring screen information selected and operated by the monitoring screen selection operation history management means are extracted from the previous storage means. The monitor screen information processing means and the reduced screen information obtained by reducing the monitor screen information selected and operated by the monitor screen selection operation history management means are selected and operated. Monitor screen reduction processing means for storing in order of history, monitoring screen information output of the monitoring screen information processing means, and operation history reduction screen information output for storing reduced screen information of the monitoring screen reduction processing means in order of history. Screen display processing means for split-displaying the display screen in a predetermined format, and selecting the operation history reduction screen for outputting the operation history reduction screen information to redisplay the monitoring screen. .

  In order to achieve the above object, a monitoring apparatus according to a fourth aspect of the present invention stores monitoring screen information of a monitoring system as a database, and selects and processes monitoring screen information to be displayed from the stored monitoring screen information database. Computation processing means, storage means for storing the monitoring screen information, and a display means for inputting a monitoring screen selection signal to be displayed on the computation processing means and displaying the monitoring screen, the computation processing means comprises: The monitoring screen selection operation history management means for managing the operation history of the monitoring screen selected and operated by the display means, and the monitoring screen information selected and operated by the monitoring screen selection operation history management means are extracted from the previous storage means. The monitor screen information processing means and the reduced screen information obtained by reducing the monitor screen information selected and operated by the monitor screen selection operation history management means are selected and operated. Monitoring screen reduction processing means for storing in order of history, and screen display processing means for displaying the monitoring screen information output of the monitoring screen information processing means in a predetermined format on the monitoring screen of the display means, wherein the display means includes the A display unit for displaying a monitoring screen and a reduced screen selection operation unit for displaying the output of the monitoring screen reduction processing means in order of history, and selecting and operating the operation history reduction screen of the reduced screen selection operation unit, It is characterized by redisplaying.

  To achieve the above object, a monitoring apparatus according to claim 5 of the present invention stores monitoring screen information of a monitoring system as a database, and selects and processes monitoring screen information to be displayed from the stored monitoring screen information database. Computation processing means, storage means for storing the monitoring screen information, and a display means for inputting a monitoring screen selection signal to be displayed on the computation processing means and displaying the monitoring screen, the computation processing means comprises: A monitoring screen selection operation history management means for managing an operation history of the monitoring screen selected and operated by the display means, and a monitoring screen from the storage means based on the monitoring screen information selected and operated by the monitoring screen selection operation history management means Monitoring screen information processing means for extracting reduced screen information in the order of information and the history of selection operation thereof, and output of the monitoring screen information processing means Screen display processing means for dividing and displaying the monitoring screen and the operation history reduction screen in a predetermined format on the display screen of the display means, and selecting the operation history reduction screen to redisplay the monitoring screen. It is characterized by that.

  In order to achieve the above object, the monitoring screen display method using the operation history reduction screen according to claim 6 of the present invention selects the monitoring screen information of the monitoring system and displays it on the monitoring screen. A method for displaying a monitoring screen of a monitoring device that monitors the status of devices and plant equipment that constitute a system. The monitoring screen is selected and operated, and an ID number that uniquely identifies the monitoring screen in order of operation history is attached. A step of storing, a step of extracting the monitoring screen information of the monitoring screen from a pre-stored storage means, and a history of selection operation of the extracted monitoring screen information as reduced operation history reduced screen surface information A step of storing in order, and a step of dividing and displaying the monitoring screen and the operation history reduction screen from the monitoring screen information and the operation history reduction screen surface information Made, the then operation history reduced screen a selection operation, characterized in that so as to re-display the monitoring screen.

  According to the present invention, the reduced screen of the monitor screen displayed by the selection operation is displayed as an icon in the order of the operation history, and when the redisplay is performed, the reduced screen is selected and redisplayed. Since the user visually identifies the target monitor screen from the reduced monitor screen image, the target monitor screen can be easily and quickly determined, and the target screen can be selected by selecting and operating this reduced screen. It is possible to provide a monitoring device that instantly redisplays the monitoring screen to be displayed, and a method for displaying the monitoring screen using the operation history reduction screen.

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

  Embodiment 1 of the present invention will be described below with reference to FIGS. FIG. 1 is, for example, a configuration diagram and a functional block diagram of a plant monitoring device 1.

  The monitoring device 1 receives the monitoring information transmitted from the plant device 7 and the control device 8 that controls the plant device 7 via the network 9 and is processed by the arithmetic processing unit 2 and the arithmetic processing unit 2 that process the monitoring information as monitoring screen information. The monitoring screen information is collected from the monitored information, the storage device 3 is stored as the monitoring screen information database 300, and the display device 4 is configured to selectively display the predetermined monitoring screen 420 from the stored monitoring image information database 300. .

  The arithmetic processing unit 2 is an arithmetic processing device that is equipped with a CPU and executes arithmetic operations of various functions, which will be described in detail later, on various types of monitoring information input to the arithmetic processing unit 2. The storage device 3 for storing various types of monitoring image information processed by the arithmetic processing unit 2 is configured with a relatively large storage capacity such as a hard disk device.

  The display device 4 includes a display unit 4a for displaying the monitoring screen 420, a keyboard 4b for inputting commands and data for operating the monitoring device 1 displayed on the display unit 4a to the arithmetic processing unit 2, and a display unit 4a. And a mouse 4c for inputting selected position information on the monitoring screen 420 displayed on the screen.

  Using the display unit 4a, the keyboard 4b, and the mouse 4c of the display device 4, a predetermined command or data is formed and input to the arithmetic processing unit 2, and a monitoring screen 420 displayed on the display unit 4a is selected. Is done.

  Next, the arithmetic processing unit 2 receives the selection signal of the monitoring screen 420 and the predetermined command and data input from the display device 4 and transmits them to the screen selection operation history management means 23 described later. Means 21, input / output processing means 22 for processing input / output signals to / from the plant equipment 7 and the control device 8 transmitted / received via the network 9, and history of selection operation of the monitoring screen 420 input from the screen operation input processing means 21 Screen operation history management means 23 for issuing a screen ID for managing the information, monitoring screen information processing means 24 for extracting and processing the monitoring screen information to be displayed based on the issued screen ID history from the storage device 3, and monitoring screen information processing The monitoring screen information processing means 24 and the monitoring screen reduction processing means 25 for reducing the monitoring screen information processed by the means 24 and storing the reduced screen information together with the screen ID. Composed of screen display processing unit 26 for transmitting a video signal to the processed monitoring screen information and the reduced image information is divided on the display unit 4a is shaped to a predetermined format on the display device 4.

  The screen ID is generated in advance from the screen number for identifying the monitoring screen set in the monitoring device 1 and the history number selected and operated on the display device 4 so that the uniquely selected monitoring screen 420 can be identified. Keep it.

  The monitoring screen information may be stored in advance as the monitoring image information database 300 in the storage device 3 from various types of monitoring information input to the arithmetic processing device 2, but is input from the input / output means 22 in real time. The monitoring information may be processed to form the monitoring screen information by synthesizing.

  Further, the reduced screen information reduced by the monitoring screen reduction processing means 25 is generated from the output of the monitoring screen reduction processing means 24, and the video output signal of the screen display processing means 26 is compressed and stored. It is also possible to configure.

  Next, a display example of the display screen displayed on the display unit 4a will be described with reference to FIG. The screen display area 41 displayed on the display unit 4a is an operation history reduced screen display in which the monitoring screen display area 42 of the main monitoring screen 420 of the monitoring apparatus 1 and the reduced screen 430 of the monitoring screen 420 are arranged in order of the operation history. An area 43 is formed.

  The operation history reduction screen display area 43 is usually placed below the screen display area 41, and each reduction screen 430 is configured such that a corresponding monitoring screen 420 is displayed by an icon operation.

  In the operation history reduction screen display area 43, a display number that can be displayed in advance is set based on the screen size of the display unit 4a. However, since the number of monitoring screens of the monitoring device 1 becomes a large number of configurations depending on the system configuration and the number of operations increases, there are cases where the operation history reduced screen display area 43 is exceeded.

  In this case, as shown in FIG. 2A, the storage capacity of the reduced screen 430 is reserved in advance for a predetermined number of operations, and an update icon for redisplaying the reduced screen 430 beyond the operation history reduced screen display area 43. 450 is configured to be displayed again by operating.

  Further, as shown in FIG. 2B, the update icon of the reduced screen 430 is composed of two icons, an icon 450a for moving the reduced screen to the left and an icon 450b for moving to the right. It can also be configured to operate in association with the positions of the left and right reduced screens 430.

  The display size of the reduced screen 430 is reduced to such an extent that the type of the monitor screen 420 can be uniquely identified by visual observation.

  Next, the storage operation of the monitoring screen reduction processing means 25 that generates such an operation history reduction screen 430 will be described with reference to FIG. FIG. 3 shows the state of this storage operation, and the history selected by the screen selection history processing means 23 and its monitoring image are uniquely associated each time based on the selection signal selected and operated by the display device 4. The selected screen ID is stored in association with the selected reduced screen information.

  The monitoring screen information output from the monitoring screen information processing unit 24 corresponding to the issued screen ID is reduced to the reduced screen 430 by the monitoring screen reduction processing unit 25, and a predetermined amount corresponding to the screen ID is set in the queue structure. Is stored in the storage means.

  That is, when the number of selection operations is n, the old reduced screen information 43d1-1 is deleted when the nth reduced screen information 43dn selected and operated is input. Then, when the reduced screen information 43dn + 1 is selected and operated, the reduced screen information 43d1 is deleted, and the structure is in a FIFO (first-in, first-out) format.

  The storage capacity is set in advance from the maximum value of the number of operation selections n, which is larger than the number displayed in the operation history reduction screen display area 43. Then, the update icon 450 is operated so that the old reduced screen 430 exceeding the operation history reduced screen display area 43 can be displayed.

  Next, the operation of the monitoring apparatus 1 configured as described above will be described with reference to FIG. First, the monitoring screen of the monitoring device 1 is selected and operated by the display device 4 and read by the screen operation input processing means 21 (s1).

  The screen operation input processing means 21 adds the screen ID to the selected monitoring screen information, except for erroneous operations such as duplicate operations, and transmits the screen ID to the monitoring screen information processing means 24 and the monitoring screen reduction processing means 25 ( s2).

  The corresponding monitoring screen information is extracted from the storage device 3 from the transmitted screen ID, subjected to a predetermined process, and the processed monitoring screen information is transmitted to the monitoring screen reduction processing means 25 and the screen display processing means 26 ( s3).

  The monitoring screen reduction processing means 25 creates reduced screen information from the processed monitoring screen information, and stores a selected number of operation history reduced screen information 250 as a predetermined number in the order of history, accompanied by a screen ID. Then, the number of reduced screen information corresponding to the operation history reduced screen display area 43 is transmitted to the screen display processing means 26 (s4).

  Next, the screen display processing unit 26 uses the monitoring screen information transmitted from the monitoring screen information processing unit 24 and the reduced screen information transmitted from the monitoring screen reduction processing unit 25 as a monitoring screen (image) 420 and a reduced screen 430. A predetermined video signal to be divided and displayed is transmitted and displayed on the display unit 4a (s5).

  When the number of selection operations on the monitoring screen 420 exceeds a predetermined number, that is, when the operation history reduced screen display area 43 is exceeded, the reduced screen 430 is displayed by the FIFO processing, and the update icon 450 is selected when the reduced screen 430 is displayed again. By operating, the reduced screen 430 exceeding the operation history reduced screen display area 43 is displayed again.

  Further, by designating the position of the reduced screen 430 displayed in the operation history reduced screen display area 43 and selecting the display, the corresponding new monitoring screen is uniquely displayed again.

  As described above, even when a large number of monitoring screens 420 are repeatedly displayed, if it is desired to select and display the monitoring screen 420 that has already been displayed, an operation history that allows the monitoring screen 420 to be imaged. One of the target reduced screens 430 can be selected from the reduced screen 430, and the corresponding monitoring screen 420 can be specified and displayed.

  FIG. 5 is a configuration diagram and a functional block diagram of the monitoring device 1 according to the second embodiment of the present invention. FIG. 6 shows an enlarged display (hop-up) of the image when it is difficult to identify on the reduced screen 430. It is a figure explaining the function of the enlarged screen 440 for making identification easy.

  About each part of Example 2, the same part as each part of Example 1 shown in FIG. 1 attaches | subjects the same number, and the description is abbreviate | omitted.

The difference between the second embodiment and the first embodiment is that, in the first embodiment, the operation history reduction screen 430 is identified as shown in FIG. 6 instead of the operation history reduction screen 430 displayed at a predetermined reduction size. When it is difficult, for example, when it is difficult to distinguish between the reduced image 430b and the reduced image on the other operation history reduction screen 430, this reduced image 430 is designated with the mouse 4c and can be identified by double-clicking to hop up. The enlarged screen 440 is displayed.

  In order to shorten the number of operations, instead of this double click operation, the mouse 4c cursor may be overlapped on the reduction screen 430 to automatically hop up.

  In order to obtain such a configuration, the enlarged screen 440 is reduced by the monitor screen reduction processing means 25a with two types of sizes, and one of the reduced screens is reduced. 430, and the other is stored in advance as its enlarged screen 440 in association with the operation history reduction and enlarged screen information 250a.

  With this configuration, even when it is difficult to identify on the operation history reduction screen 430, it is possible to quickly perform a selection operation.

  FIG. 7 is a configuration diagram and functional block diagram of the monitoring device 1 according to the third embodiment of the present invention, and FIG. 8 is an overview diagram illustrating the configuration of the reduced screen selection operation unit 14.

  About each part of Example 3, the same part as each part of Example 1 shown in FIG. 1 attaches | subjects the same number, and the description is abbreviate | omitted.

  The third embodiment is different from the first embodiment in that the operation history reduction screen 430 is divided and displayed at the bottom of the monitoring screen 420 of the display unit 4a in the first embodiment as shown in FIG. A reduced screen selection operation unit 14 including a keyboard 43a1 and a reduced screen display unit 43a2 is provided, and reduced screens 431a1 to 431an are displayed on the reduced screen display unit 43a2.

  In order to achieve such a configuration, the reduced screen display unit 43a2 is configured to include a liquid crystal screen, and the output signal of the monitoring screen reduction processing unit 25 is converted into a video signal and transmitted to the reduced screen display unit 43a2. And display it.

  Alternatively, the output signal of the reduced screen of the screen display processing unit 26 may be transmitted to the reduced screen display unit 43a via the screen operation input / output processing unit 21a.

  By displaying the operation history reduction screen 430 independently from the display unit 4a in this way, the display area of the monitoring screen displayed on the display unit 4a can be enlarged without being affected by the display area of the operation history reduction screen 430. can do.

  FIG. 9 is a configuration diagram and functional block diagram of the monitoring device 1 according to the fourth embodiment of the present invention.

  About each part of Example 4, the same part as each part of Example 1 shown in FIG. 1 attaches | subjects the same number, and the description is abbreviate | omitted.

  The fourth embodiment differs from the first embodiment in that reduced screen information and monitoring screen information are generated by the monitoring screen information processing means 24a instead of the monitoring screen reduction processing means 25 that generates the reduced screen 430 of the first embodiment. In other words, the storage device 3 is associated with the screen ID and stored as the monitoring screen information reduction database 300a.

  In this case, by storing the reduced screen information in the storage device 3, the simple monitoring device 1 can be configured without changing the system even when the reduced screen information becomes large.

  To realize the functions in the arithmetic processing unit 2 described above, these functions are stored in advance in an external storage device such as the storage device 3, and the program is stored in a main memory (not shown) of the arithmetic processing unit 2 when the program is executed. Is stored and executed by a CPU (not shown) of the arithmetic processing unit 2.

  Moreover, although the selection operation of the monitoring screen of the display unit 4a has been described as the icon operation using the mouse 4b, the display unit 4a can be configured as a touch screen.

  The present invention is not limited to the above-described embodiments, and any device having hardware and software having a function of operating a reduced image on a monitoring screen as an icon may be used. Various modifications can be made without departing from the scope of the invention.

The block diagram of Example 1 of the monitoring apparatus by this invention, and a functional block diagram. The example of a display of the monitoring screen of Example 1 of the monitoring apparatus by this invention. Control method of reduced screen image data. The operation | movement flowchart of the monitoring image by this invention. The block diagram of Example 2 of the monitoring apparatus by this invention, and a functional block diagram. Operation | movement explanatory drawing which expands the reduction screen of the monitoring apparatus by this invention. The block diagram of Example 3 of the monitoring apparatus by this invention, and a functional block diagram. The block diagram of the reduction screen selection operation part of Example 3 of the monitoring apparatus by this invention. The block diagram of Example 4 of the monitoring apparatus by this invention, and a functional block diagram.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Monitoring apparatus 2 Arithmetic processing part 3 External storage device 4 Display apparatus 4a Display part 4b Keyboard 4c Mouse 7 Plant equipment 8 Control apparatus 9 Network 14 Reduction screen selection operation part 21 Screen operation input processing means 22 Input / output processing means 23 Screen operation history Management means 24, 24a Monitoring screen information processing means 25 Monitoring screen reduction processing means 26 Screen display processing means 41 Screen display area 42 Monitoring screen display area 43 Operation history reduction screen display area 43a1 Keyboard part 43a2 Reduced screen display parts 43d1 to 43d Screen ID And reduced screen information 250 operation history reduced screen information 250a operation history reduced, enlarged screen information 300, 300a monitoring screen information database 420 monitoring screen 430 (430a, 430b, 430c) operation history reduced screen (reduced screen)
431a1, 431a2, ... 431an) Operation history reduction screen (reduction screen)
440 Operation history enlargement screen 450 Update icon

Claims (7)

The monitoring screen information of the monitoring system is stored as a database, the arithmetic processing means for selecting and processing the monitoring screen information to be displayed from the stored monitoring screen information database, the storage means for storing the monitoring screen information, and the arithmetic processing means A display means for inputting a monitoring screen selection signal to be displayed on the display screen and displaying the monitoring screen;
The arithmetic processing means includes a monitoring screen selection operation history management means for managing an operation history of the monitoring screen selected and operated by the display means,
Monitoring screen information processing means for extracting from the previous storage means the monitoring screen information selected and operated by the monitoring screen selection operation history management means;
Monitoring screen reduction processing means for storing reduced screen information obtained by reducing the monitoring screen information selected and operated by the monitoring screen selection operation history management means in order of history of selection operation;
A screen that splits and displays the monitor screen information output of the monitor screen information processing means and the operation history reduced screen information output in which the reduced screen information of the monitor screen reduction processing means is stored in order of history on the display screen of the display means Display processing means,
The monitoring apparatus according to claim 1, wherein the monitoring screen is displayed again by selecting and operating the operation history reduction screen for outputting the operation history reduction screen information. The monitoring screen of the display means includes the monitoring screen, the operation history reduction screen, and an update icon,
The monitoring apparatus according to claim 1, wherein an old history screen exceeding a display area of the operation history reduction screen is displayed again by operating the update icon.   The monitoring screen reduction processing means accompanies a screen ID that uniquely identifies the selected monitoring screen, stores the reduced screen data in association with the screen ID in a queue structure format, and displays the display The monitoring apparatus according to claim 1, wherein when there is a request to display a monitoring screen that has been selected and operated from the means, the monitoring apparatus is arranged and re-output in order of history.   The monitoring screen reduction processing means includes two types of reduction sizes of the monitoring screen information, one is stored as the operation history reduction screen information, the other is stored as enlarged screen information larger than the operation history reduction screen, and the display means 2. The monitoring apparatus according to claim 1, wherein enlarged screen information is output when there is a request for displaying the enlarged screen from the reduced screen. The monitoring screen information of the monitoring system is stored as a database, the arithmetic processing means for selecting and processing the monitoring screen information to be displayed from the stored monitoring screen information database, the storage means for storing the monitoring screen information, and the arithmetic processing means A display means for inputting a monitoring screen selection signal to be displayed on the display screen and displaying the monitoring screen;
The arithmetic processing means includes a monitoring screen selection operation history management means for managing an operation history of the monitoring screen selected and operated by the display means,
Monitoring screen information processing means for extracting from the previous storage means the monitoring screen information selected and operated by the monitoring screen selection operation history management means;
Monitoring screen reduction processing means for storing reduced screen information obtained by reducing the monitoring screen information selected and operated by the monitoring screen selection operation history management means in order of history of selection operation;
Screen display processing means for displaying the monitoring screen information output of the monitoring screen information processing means on the monitoring screen of the display means in a predetermined format;
The display unit includes a display unit that displays the monitoring screen and a reduced screen selection operation unit that displays the output of the monitoring screen reduction processing unit in order of history,
A monitoring apparatus, wherein the operation screen reduction screen of the reduction screen selection operation unit is selected and operated to redisplay the monitoring screen. The monitoring screen information of the monitoring system is stored as a database, the arithmetic processing means for selecting and processing the monitoring screen information to be displayed from the stored monitoring screen information database, the storage means for storing the monitoring screen information, and the arithmetic processing means A display means for inputting a monitoring screen selection signal to be displayed on the display screen and displaying the monitoring screen;
The arithmetic processing means includes a monitoring screen selection operation history management means for managing an operation history of the monitoring screen selected and operated by the display means,
Monitoring screen information processing means for extracting monitoring screen information from the storage means and reduced screen information in order of the history of selection operation based on the monitoring screen information selected and operated by the monitoring screen selection operation history management means;
Screen display processing means for dividing and displaying the monitoring screen and the operation history reduction screen from the output of the monitoring screen information processing means on the display screen of the display means in a predetermined format;
A monitoring apparatus, wherein the operation history reduction screen is selectively operated to redisplay the monitoring screen. The monitoring screen information of the monitoring system is selected and displayed on the monitoring screen, and the monitoring screen display method of the monitoring device for monitoring the status of the monitoring system and the devices and plant equipment constituting the monitoring system,
A step of selecting and monitoring a monitoring screen, storing the monitoring screen with an ID number that uniquely identifies the monitoring screen in order of operation history;
Extracting the monitoring screen information of the monitoring screen from storage means stored in advance;
Storing the extracted monitoring screen information in the order of history of selection operation as reduced operation history reduced screen surface information;
From the monitoring screen information and the operation history reduction screen surface information, the monitor screen and the operation history reduction screen are divided and displayed.
A method for displaying a monitoring screen using an operation history reduction screen, wherein the operation history reduction screen is selected and displayed to redisplay the monitoring screen.

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