JP2004054555A - Display device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a display device allowing an operator to recognize on a screen the kind of a failure resulting from operation on a distributed control system made integrally manageable the whole of a plant. <P>SOLUTION: The display device for displaying event data showing if a predetermined phenomenon has occurred in the plant is provided with a viewer means for displaying on the same screen a list of historical messages created by the distributed control system controlling operation of the plant and a list of event data. Thus, the event data and the historical messages of the distributed control system are displayed on the same screen. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a display device that displays event data indicating whether a predetermined phenomenon has occurred in a plant. More specifically, the present invention relates to a display device which displays event data and a historical message of a distributed control system on the same screen, and is designed to enable centralized management of the entire plant.
[0002]
[Prior art]
Event data is data indicating whether a predetermined phenomenon has occurred in the plant, for example, whether the temperature or pressure existing in the plant exceeds the upper limit value, whether a certain contact signal is on, and the like. is there.
The SOE (Sequence of Event) function is a function of collecting event data and arranging the event data in the order of occurrence time. The SOE viewer arranges the collected event data in order of occurrence time and displays a list on the screen. The operator monitors the plant based on the displayed event data.
[0003]
A distributed control system is a system that controls a plant using an operation monitoring station and a control station.
FIG. 4 is a diagram showing a configuration example of a general distributed control system.
In FIG. 4, the operation monitoring station 1 and the control station 2 are connected to a communication bus 3. The control station 2 controls the plant 4 under the monitoring of the operation monitoring station 1. The operation monitoring station 1 is in charge of the operation and monitoring of the plant. The operation monitoring station 1 displays a screen for controlling operation and monitoring. A plurality of control stations are distributed in the plant according to the size of the plant.
[0004]
The sensor devices 41 and 42 existing in the plant 4 detect process values such as temperature, pressure, and liquid level. The opening of the valves 43 and 44 is controlled by an operation signal given from the control station 2. An analog signal of 4 to 20 mA, 1 to 5 V output from the sensor devices 41 and 42 is input to the control station 2. On the basis of this input, a control unit (not shown) in the control station 2 performs a control operation to obtain an operation amount. This operation amount is output as an analog signal of 4 to 20 mA and 1 to 5 V, and the output controls the opening degree of the valves 43 and 44. For example, by controlling the valve opening of the reactor, the process amount such as temperature and pressure is controlled.
[0005]
FIG. 5 is a diagram showing a configuration example of a conventional event data display device.
In FIG. 5, the event data server 5 collects and stores event data. The event recorder 6 collects and records event data. The SOE viewer 7 acquires event data from the event data server 5 and the event recorder 6, and displays the acquired event data on a screen.
[0006]
The conventional example of FIG. 5 satisfies the market demand as a mere event data display function. However, since the apparatus is independent of the distributed control system, the operator has to compare the screen of the SOE viewer with the screen of the distributed control system and analyze the event that has occurred in the plant. That is, the entire plant could not be centrally managed.
[0007]
[Problems to be solved by the invention]
SUMMARY OF THE INVENTION The present invention has been made to solve the above-described problems. By displaying event data and a historical message of a distributed control system on the same screen, a result of an operation performed by an operator on the distributed control system is provided. It is an object of the present invention to realize a display device that can recognize on the screen what kind of abnormality has occurred and that enables centralized management of the entire plant.
[0008]
[Means for Solving the Problems]
The present invention is a display device having the following configuration.
[0009]
(1) In a display device for displaying event data indicating whether a predetermined phenomenon has occurred in a plant,
A display device comprising a viewer means for displaying a list of historical messages and the event data created by a distributed control system for controlling and operating a plant on the same screen.
[0010]
(2) The historical message and the event data are provided with time data indicating an occurrence time, and the viewer means lists the historical messages and the event data on the screen in the order of the occurrence time. A display device according to claim 1.
[0011]
(3) The display device according to (2), wherein the time data attached to the event data has a higher resolution than the time data attached to the historical message.
[0012]
(4) An event data server that acquires event data from the distributed control system, processes the acquired event data into data for display, and provides the processed data to the viewer means. The display device according to any one of (3).
[0013]
(5) An identification display means for attaching an identification mark to important historical messages and event data satisfying a predetermined condition among the historical messages and event data displayed in a list on the same screen. The display device according to any of (4).
[0014]
(6) The display device according to (5), wherein the identification display unit attaches different identification marks to the historical message and the event data, respectively.
[0015]
(7) The display device according to (5), wherein the identification display unit changes the shape of an identification mark added to the historical message and the event data according to the degree of importance.
[0016]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, the present invention will be described in detail with reference to the drawings.
FIG. 1 is a configuration diagram showing one embodiment of the present invention.
In FIG. 1, the SOE viewer 8 has a viewer means 81 and a display means. The viewer means 81 displays a list of historical messages created by the distributed control system and event data acquired from the event data server (SOE server) 9 on the same screen. The historical message and the event data are provided with time data indicating the time of occurrence, and the viewer means 81 displays a list of the historical messages and the event data on the screen in order of the time of occurrence.
[0017]
The historical message is obtained from the historical message file 11 held by the operation monitoring station 1 of the distributed control system.
The event data is obtained from the control station 2 of the distributed control system. The event data server 9 acquires event data from the input / output unit of the control station 2. Which input point of the input / output unit to acquire data is defined in advance.
The event data server 9 collects data in a shorter cycle than in the distributed control system. Therefore, the time data attached to the event data has a higher resolution than the time data attached to the historical message. For example, time data having a resolution of 1 msec is attached to event data, and time data having a resolution of 1 sec is attached to a historical message.
[0018]
The event data server 9 processes the event data acquired from the control station 2 into data for display, and provides the processed data to the viewer means 81. The configuration of the event data server 9 will be described.
The data collection means 91 accesses the control station 2 at regular intervals and checks whether there is event data. If there is event data, collect it. The control station 2 has time data obtained from a GPS (Global Positioning System). GPS has standard time data in an omnidirectional positioning system.
[0019]
The data collection unit 91 collects event data and time data from the control station 2. In the figure, data is read from one control station, but data may be read from a plurality of control stations.
The data storage unit 92 temporarily stores the data collected by the data collection unit 91 in a file.
The control station 2 realizes time synchronization using GPS, and the data collection means 91 collects this time data together with event data. As a result, a highly accurate time is always set in the event data server 9.
[0020]
The file conversion means 93 stores the collected data of the data storage means 92 in the database 94 with additional information so as not to affect the data collection processing. The additional information is, for example, information on an operation under an alarm condition. The database 94 is, for example, an SQL server (SQL stands for Structured Query Language). The contents of the database 94 can be referred to through a network. The viewer means 81 refers to the contents of the database 94.
[0021]
Messages generated in the distributed control system are stored in the historical message file 11 with time data. The viewer means 81 accesses the historical message file 11 at regular intervals and collects messages.
Thus, the viewer means 81 collects event data and historical messages. The collected event data and each information of the historical message are merged, sorted in the order of occurrence time, and displayed on the screen of the display unit 82. The user can freely select from which server and from which operation monitoring station the information is acquired, so that only necessary information can be displayed.
[0022]
FIG. 2 is a diagram showing an example of a screen of the display means 82.
As shown in FIG. 2, the event data and the information of the historical message are displayed in the order of occurrence time. The event data is provided with time data in units of 1 msec, whereas the historical message is provided with time data in units of 1 sec. In FIG. 2, the last three digits of the time stamp (time data) are "000", which is a historical message, and the rest are event data.
By merging and displaying the event data and the historical message in this manner, the operator can perform an operation on the distributed control system to determine what abnormality has occurred based on the order in which the event data and the historical message are generated. Can be analyzed.
[0023]
Returning to FIG. 1, the identification display means 83 identifies and displays important historical messages and event data satisfying a predetermined condition among the historical messages and event data displayed in a list on the display means 82. Important historical messages and event data are, for example, a trigger (trip trigger) that is triggered when a trip occurs, an important alarm, and the like.
[0024]
The identification display is performed, for example, as follows.
(A) Color change display of entire message Trip trigger: background color yellow, text black Important alarm: background color white, text red Other messages: background color white, text black (b) Display color icons at the beginning of line Trip trigger: black In the circle of yellow, the letter T is important. Alarm: white in the red circle, letter H. Other messages: none.
[0025]
FIG. 3 is a diagram showing an example of a screen of the display means 82 when an important historical message and event data have occurred.
As shown in FIG. 3, an icon is displayed at the beginning of the line of the trip trigger and the important alarm. In FIG. 3, an icon of a letter T is displayed in a circle at the beginning of the trip trigger, and an icon of H is displayed in a circle at the beginning of the important alarm. Although not shown in the figure, the trip triggers and important alarms are displayed in different colors.
[0026]
When displayed as shown in the screen of FIG. 3, important messages can be distinguished at a glance, so that the work efficiency when the operator analyzes a phenomenon that has occurred in the plant is significantly improved. Since not only color change but also color icons are used, important messages can be distinguished at a glance even when a screen image is output to a black-and-white printer such as a laser printer. Further, even if the operator has color vision impairment, he can work without any trouble.
[0027]
Note that the identification display means 83 may change the shape of the identification mark added to the historical message and the event data according to the degree of importance.
[0028]
【The invention's effect】
According to the present invention, the following effects can be obtained.
[0029]
According to the first to third aspects of the present invention, the event data and the historical messages of the distributed control system are listed and displayed on the same screen in the order of occurrence time. For this reason,
(A) Cause: Operation details of the operator, abnormal information of equipment and control programs (system alarm)
(B) Progress: All event data, process alarms, and the like can be known at once and in order of occurrence time. As a result, it is possible to recognize on the screen what kind of abnormality has occurred as a result of the operation performed by the operator on the distributed control system, and it has become possible to centrally manage the entire plant.
[0030]
According to the fourth aspect of the present invention, the event data server processes the event data into data for display, so that the operator can easily grasp the contents of the event data.
[0031]
According to the fifth aspect of the present invention, since important historical messages and event data are marked with identification marks, important messages can be distinguished at a glance from among a large number of messages displayed in a list, and a screen image can be displayed on a laser printer. When outputting to a black and white printer, important messages can be distinguished at a glance. Further, even if the operator has color vision impairment, he can work without any trouble.
[0032]
In the invention according to claim 6, since the historical message and the event data have different identification marks, the historical message and the event data can be output even when the screen image is output to a black-and-white printer or when the operator has color vision impairment. Can be distinguished.
[0033]
In the invention according to claim 7, since the form of the identification mark attached to the historical message and the event data is changed according to the degree of importance, even when the screen image is output to a black and white printer or when the operator has color vision impairment, The importance can be identified.
[Brief description of the drawings]
FIG. 1 is a configuration diagram showing one embodiment of the present invention.
FIG. 2 is a diagram showing an example of a display screen of the apparatus of FIG.
FIG. 3 is a diagram showing an example of a display screen of the device of FIG. 1;
FIG. 4 is a diagram showing a configuration example of a general distributed control system.
FIG. 5 is a diagram showing a configuration example of a conventional event data display device.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Operation monitoring station 2 Control station 9 Event data server 81 Viewer means 83 Identification display means 91 Data collection means 93 File conversion means

Claims (7)

In a display device that displays event data indicating whether a predetermined phenomenon has occurred in the plant,
A display device comprising a viewer means for displaying a list of historical messages and the event data created by a distributed control system for controlling and operating a plant on the same screen. 2. The historical message and event data are provided with time data indicating the time of occurrence, and the viewer means displays a list of historical messages and event data on the screen in order of the time of occurrence. Display device. The display device according to claim 2, wherein the time data attached to the event data has a higher resolution than the time data attached to the historical message. 4. An event data server which acquires event data from a distributed control system, processes the acquired event data into data for display, and provides the processed data to a viewer means. The display device according to any one of the above. 5. An identification display means for marking an important historical message and event data satisfying a predetermined condition among historical messages and event data displayed in a list on the same screen. The display device according to any one of the above. 6. The display device according to claim 5, wherein the identification display unit attaches different identification marks to the historical message and the event data, respectively. 6. The display device according to claim 5, wherein the identification display unit changes the shape of an identification mark added to the historical message and the event data according to the degree of importance.

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