JPH05166086A - Plant monitoring device - Google Patents

Abstract

PURPOSE:To attain the macroscopic view of the operational state of the entire plant in a unit easy to be managed by an operator. CONSTITUTION:The system is provided with an operational state display means 12 displaying the operational state for each control unit by taking various type of controllers and devices in the plant as a unit in the prescribed range to discriminate at least during the normal operation, during the alarm generation showing the alarm state being the stage before the abnormal state, and during the abnormal state and an alarm information display means 13 displaying the detail information on warning or abnormal state and the information for the measurements on the same screen when the means 13 performs the display indicating the alarm generation or the abnormality.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a plant monitoring device equipped with a display device such as a CRT or a liquid crystal display device, and more particularly to controlling and monitoring various control devices and device groups existing in a factory. The present invention relates to a plant monitoring device that can be efficiently performed using a display screen.

[0002]

2. Description of the Related Art Conventionally, there is a distributed control device for controlling and monitoring a plant by using a CRT display device.
In these devices, paying attention to the process amount handled by various internal instruments configured in the control device, deviation from the set value, control output, etc., and when those values exceed the preset alarm value, It is configured to notify an alarm to each instrument unit.

FIG. 8 is a diagram showing the concept of plant monitoring in such a conventional apparatus. In this figure, a reactor plant is assumed, and a temperature controller C for controlling the temperature of the heating fluid supplied to the outer pot for controlling the temperature of the pot.
1, a flow rate controller C2, a flow rate controller C3 that controls the discharge flow rate of the product in the kettle, and a liquid level controller C4 that controls the liquid level in the kettle. For monitoring in the plant configured in this way, pay attention to each control element of each controller C1 to C4,
As shown in the figure, for example, a tag number such as "TIC2001" is attached, and an alarm is output when a signal handled by each control element falls within a predetermined alarm range.

[0004]

The method of monitoring the plant by paying attention to each control element as described above is a convenient monitoring method when detecting a defect in each control element. When some kind of abnormality occurs and the number of alarm notifications from each control element increases, the plant manager (operator) must judge the true abnormality from those alarm notifications and take necessary measures. , In addition to requiring considerable experience to make an appropriate judgment, if the operator makes a mistake in the judgment or the error countermeasure processing is delayed,
There has been a problem that a serious accident may occur in plant operation.

Further, since the alarm notification is made in units of individual control elements, it is inconvenient to comprehensively monitor and manage the operating status of each operating area of the plant. The present invention has been made in view of these points, it is possible to grasp the plant macroscopically, the plant monitoring device that can quickly take the abnormality prediction before the abnormality occurs and countermeasures against it The purpose is to provide.

[0006]

The present invention which achieves such an object is a plant monitoring device provided with a display device for monitoring the control operation status of a plant, which is provided on a display screen of the display device. , Various control devices and device groups existing in the plant are grouped in a predetermined range into one unit, and the operation status of each control unit grouped as the unit,
At least a driving status display means for distinguishably displaying a driving status indicating normal driving, a warning status indicating a warning status before entering the abnormal status, and an abnormal status indicating an abnormal status, When a display indicating that a warning is being generated or an abnormality is being displayed by the operation status display means, the detailed information of the warning state or the abnormal state and the information regarding the countermeasure against the same are displayed on the same screen automatically or by the designation of the pointing device. A plant monitoring device, comprising: an alarm information display unit displayed above.

[0007]

On the display screen for monitoring the plant, a large number of control devices and apparatus groups that constitute the plant are divided into, for example, several manageable parts (units), and each part is treated as one control unit. The driving status is displayed. The operation status display means comprehensively evaluates several signals handled by the control unit to determine whether the operation is in normal operation or is in a warning state indicating a warning state before entering an abnormal state. ， Judge whether there is an abnormal state and display those states in a distinguishable manner.

The alarm information display means, when a warning is generated or a display indicating an abnormality is made, displays the detailed information of the warning state or the abnormal state and the information on the countermeasure against the same on the same screen. This makes it possible to provide alarm information in a more understandable form.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described in detail below with reference to the drawings. FIG. 1 is an explanatory diagram of a control unit used in the present invention. In a plant composed of a plurality of pumps and valves as shown in the figure, a heating furnace to which raw materials controlled by these valves are supplied, a reaction kettle, a blending furnace, etc. These control elements are grouped together as shown in broken lines into one unit, which is a control unit U1, and several control elements that follow, for example, surrounding the mixing tank, are managed as shown in broken lines. For the sake of simplicity, the control units U2 are collectively formed. One control unit instrument is assumed for each of these units.

FIG. 2 is a block diagram showing the configuration of an embodiment of the present invention. In the figure, PLT is an overall view of the plant, and various sensors, actuators such as valves, etc. are installed therein. FC1, FC2
Is a control station for controlling the plant PLT, which inputs signals from various sensors and outputs control outputs to actuators such as valves. The OPS is an alarm monitoring device to which the present invention is applied, and normally an operator station equipped with a display device such as a CRT for monitoring the control operation and control state is used. The alarm monitoring device OPS is connected to the control stations FC1 and FC2 via a communication bus.

In the plant monitoring apparatus OPS, 11 is a data collecting means for cyclically collecting various data handled by each control station FC, and 12 is a control screen existing in the plant PLT on the display screen of the display device. Device group (including various internal instruments in the control station)
The operation status for each control unit instrument is at least during normal operation and during warning indicating a warning state before entering an abnormal state. The operating status display means for distinguishably displaying an abnormal state indicating an abnormal state, and 13 is automatically or pointed out when the operating status display means 12 displays a warning or an abnormal state. It is an alarm information display means for displaying detailed information on the warning state or abnormal state and information on countermeasures against the warning state or the abnormal state on the same screen by designating the teng device.

The operation of the thus constructed apparatus will be described below. FIG. 3 is an explanatory diagram of a control unit instrument diagram displayed by the operation status display means 12 on the display device of the alarm monitoring device OPS. Here, the mixing tank unit instrument diagram, the digester unit instrument diagram, and the heating furnace unit instrument diagram are illustrated. In each of these instrument diagrams, it is possible to distinguish between the operation indicating normal operation, the warning occurrence indicating the warning state that is a stage before entering the abnormal state, and the abnormal state indicating the abnormal state. A display column 21 is provided for changing the display color to green, yellow or red. In addition, each instrument diagram includes a manual operation unit 22 for operating the instrument.
Is provided. Here, a start button for instructing to start the operation of the instrument, a stop button, etc. are prepared. 23 is a button for locking the manual operation,
24 is a button for instructing automatic driving. Each of these buttons is configured to be activated by pointing with a pointing device, or by configuring the display device as a touch panel, and touching each button with a finger.

FIG. 4 is a diagram showing an example of an overview screen for monitoring the entire plant. When all the control unit instrument diagrams that are involved in the control of the plant PLT are displayed and normal operation is performed in each control unit instrument diagram, the display column showing the operation status is "green (green)". Is displayed. Each of these control unit instruments comprehensively monitors various signals handled by each instrument, and, for example, performs an abnormality diagnosis as disclosed in Japanese Patent Publication No. 58-16447, and outputs a warning state. When it reaches, the display column of the control unit instrument diagram will change to "Yellow". Furthermore, if a failure condition is reached, the control unit instrument diagram display field will be "red".
The display changes. As a method of performing abnormality diagnosis based on various input signals, in addition to the method disclosed in the above publication, a method using a "decision table", a method using an "interlock block diagram", Various methods such as a method using “fault tree”, a method using “AI”, and a “logical check” method can be used.

The operator recognizes that the color displayed on the control unit instrument diagram has changed to "yellow (yellow)" or "red (red)", and the alarm of that control unit instrument is displayed. It is possible to immediately give a screen development instruction to know the factor. FIG. 5 shows a case where the control unit instrument diagram displays a warning state,
It is a figure which shows the alarm information which the alarm information display means 13 displays, when the screen expansion instruction | indication for knowing the factor of an alarm is performed. In addition to the instruction from the pointing device operated by the operator, the display on this screen may be automatically displayed when the warning state is set.

This alarm information display may be displayed in a window or may be expanded and displayed on another screen. In this example, the alarm control is developed from the reactor control unit instrument diagram.For example, the warning factors are, for example, the relationship between the internal pressure and the temperature in the can, and the change in the temperature in the can that changes with time. A diagram showing the rate is shown highlighting that the rate of temperature change in the can is approaching the alarm point. Also, measures against it
As a study proposal, there are proposed countermeasures such as "The steam valve is closed" and "Check whether the temperature sensor is normal" when the temperature of the reactor is rising. Also, for reference, other control units that are affected are also shown here.

Therefore, the operator can immediately take countermeasures against the warning factor based on these pieces of information. FIG. 6 is an explanatory diagram when the plant is started using the control unit instrument diagram. First, the lock button 23
Operate to release the locked state. When the lock is released, the display showing the lever is in the horizontal direction. In this state, it becomes possible to operate each button of the manual operation unit 22, and the operation of the control unit instrument (reactor control unit) is started by first operating the start button. When the operation is started, various internal instruments included in the control unit instrument are activated and the control operation is automatically performed (when the button 24 instructing the automatic operation is instructed to be automatic). In this automatic control operation, for example, a bar graph whose length gradually increases as the reaction progresses is displayed as shown in the column indicating the operation.

During the automatic control operation, the manual operation unit 22
Since it is preferable from the safety point of view that each of the buttons is locked, the lock button 23 is operated to return to the locked state. FIG. 7 is an explanatory diagram when the plant is stopped using the control unit instrument diagram. here,
It is assumed that the control unit instrument is displaying a warning state and the control unit instrument is stopped based on the warning condition.

First, the lock button 23 is operated to release the locked state. Manual operation part 2 in the unlocked state
Operate the 2 stop button. Then, the support guidance for the subsequent suspension procedure is displayed.
This support guidance display may be displayed as a window or may be displayed in a screen. On this screen, a graphic of the plant in charge of the control unit instrument (reactor control unit) is displayed, and the shutdown procedure is displayed in order.

Therefore, the operator can smoothly stop the corresponding control unit instrument without disturbing the plant by performing the stop procedure according to this guidance. In the above description, the warning display and the abnormal state display displayed in the operation status display column 21 are
In addition to identification by color, devices such as blinking may be used at the same time.

[0020]

As described above in detail, according to the present invention, the operating condition of the entire plant can be macroscopically grasped in the unit of the unit that can be easily managed by the operator. In addition to being able to make a clear judgment, when a warning occurs or an abnormality occurs, it can be expanded to the alarm guidance screen by a simple operation, or expanded to the graphic panel, for multiple control loops or operation ends. Appropriate operation commands can be given.

[Brief description of drawings]

FIG. 1 is an explanatory diagram of a control unit used in the present invention.

FIG. 2 is a configuration block diagram showing an embodiment of the present invention.

FIG. 3 is an explanatory diagram of a control unit instrument diagram displayed on a display device of an alarm monitoring device by an operation status display unit.

FIG. 4 is a diagram showing an example of an overview screen for monitoring the entire plant.

FIG. 5 is a diagram showing alarm information displayed by an alarm information display means when a screen development instruction for knowing a cause of an alarm is issued when a control unit instrument diagram displays a warning state. ..

FIG. 6 is an explanatory diagram in the case of starting a plant using a control unit instrument diagram.

FIG. 7 is an explanatory diagram when a plant is stopped using a control unit instrument diagram.

FIG. 8 is a diagram showing a concept of plant monitoring in a conventional device.

[Explanation of symbols]

 PLT plant FC1, FC2 control station OPS alarm monitoring device (operator station) 11 data collection means 12 operating status display means 13 alarm information display means

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁵ Identification code Internal reference number FI Technical display location G09G 5/00 8121-5G 5/02 9175-5G 5/36 8121-5G

Claims (3)

[Claims] 1. A plant monitoring device comprising a display device for monitoring the control operation status of a plant, wherein various control devices and device groups existing in the plant are displayed on a display screen of the display device. The operating statuses of the control units grouped as a unit are summarized as follows: at least during operation indicating normal operation and during warning indicating a warning state before entering the abnormal state. If the operating status display means for displaying the abnormal status indicating the abnormal status is identifiable, and the operating status display means displays the warning or abnormal status, the pointing device is designated. , Or alarm information display means that automatically displays detailed information about the warning or abnormal condition and information about measures against it on the same screen. Plant monitoring apparatus characterized by digit. 2. The plant monitoring apparatus according to claim 1, wherein the operating status display means displays the operating status, the warning status, and the abnormal status in a distinguishable manner by changing their display colors. 3. The plant monitoring device according to claim 1, wherein the operation status display means displays a soft switch section for instructing at least operation start and operation stop of the control unit by a pointing device.