JP2019102037A - Plant monitoring device and plant monitoring method - Google Patents

Abstract

To provide a plant monitoring device and a monitoring method that enable speedy check of tendencies of a plurality of process values relating to occurrence of alarm.SOLUTION: A plant monitoring device that monitors an operating state of a plant by using a trend graph and an event list, has: an event processing unit 6 that stores time and date of any event selected from the event list; and a trend processing unit 7 that outputs a trend graph to display means 5 by using, as a center of a time axis, the event occurrence time and date stored in the event processing unit 6.SELECTED DRAWING: Figure 1

Description

  The embodiment of the present invention relates to a plant monitoring device and a monitoring method, and more particularly to a plant monitoring device and a plant monitoring method capable of quickly grasping trend data and facilitating plant monitoring.

  Maintenance and operation and management of the plant is carried out with a complete system for equipment that monitors and controls large-scale and highly public plants such as water and sewage plants and nuclear power plants, but if an abnormal situation occurs due to some reason It is feared that all or part of the functions will be stopped and it will interfere with the stable supply of drinking water and electricity, which are lifelines.

  In such a plant monitoring control device, of the trend graph screen, the operation history data screen, the alarm history data screen, etc., the trend data and the operation history data are updated based on each state signal etc. output from the plant. The specified screen is displayed on display means such as a CRT device, and each status signal is analyzed to determine whether a preset alarm condition is satisfied, and when the alarm condition is satisfied, the alarm data is output. The alarm sound is output from the CRT device while updating and generating the alarm history data to notify that some abnormality has occurred in the plant (for example, see Patent Document 1).

Japanese Patent Application Publication No. 2001-14025

  Various operation alarms of field devices such as alarms and pumps and valves can be confirmed on the trend graph screen, operation history data screen, alarm history data screen, etc., but when the amount to be confirmed is huge Since it takes time to reach the target screen, it will interfere with the operation of the plant where a prompt response is required in case of emergency. When an alarm occurs, it is desirable to confirm a plurality of process value information and quickly grasp what kind of situation the plant is in.

  According to the prior art, a technology for developing on a trend graph screen corresponding to an alarm generation date and time arbitrarily selected from an alarm history data screen has been proposed, making it easy to grasp the situation of the plant at the time of the alarm occurrence. I have to.

  However, in plant monitoring, it is necessary to confirm not only the signal directly attributable to the occurrence of an alarm but also other related information, effects, and the degree of change, and it is necessary to confirm process values using a plurality of trend graphs. However, if it is not expanded from the alarm history data screen but expanded from the menu screen, the trend graph display is for the current date and time, so it becomes necessary to set the desired date and time each time, and the operator is inefficient. There is a problem that

  The present embodiment is proposed to solve the problems of the prior art as described above, and the object of the present embodiment is to quickly confirm the trends of a plurality of process values related to an alarm occurrence. To provide a plant monitoring apparatus and a monitoring method that support information analysis for collecting abnormal conditions of the plant.

  In order to achieve the above object, the invention according to claim 1 is a plant monitoring apparatus for monitoring an operating state of a plant using a trend graph and an event list displayed on a display means, the event displayed on the display means It has an event processing unit that stores the occurrence date and time of an arbitrary event selected from a list, and a trend processing unit that outputs a trend graph to the display unit with the event occurrence date and time stored in the event processing unit as the center of the time axis. Make it a gist.

  In order to achieve the above object, the invention according to claim 2 is that, in the plant monitoring apparatus according to claim 1, an arbitrary point on the graph of the trend graph displayed on the display means is selected and a related comment is input. Save the date and time corresponding to an arbitrary place on the selected graph and the comment, input from the means, and match by the keyword search from among the saved comments based on the keyword input from the input means A comment may be extracted, and a trend comment processing unit that causes the event processing unit to store a date and time corresponding to the extracted comment.

  In order to achieve the above object, the invention according to claim 3 is a plant monitoring apparatus for monitoring an operating state of a plant using a trend graph and an event list displayed on a display means, the event displayed on the display means The gist of the present invention is to store an occurrence date and time of an arbitrary alarm selected from a list, and to output a trend graph to the display means with the stored event occurrence date and time as the center of the time axis.

  In order to achieve the above object, the invention according to claim 4 is the plant monitoring method according to claim 3, selecting any place on the graph of the trend graph displayed on the display means and inputting a related comment Save the date and time corresponding to an arbitrary place on the selected graph and the comment, input from the means, and match by the keyword search from among the saved comments based on the keyword input from the input means A summary is to extract a comment, and store the date and time corresponding to the extracted comment in the event processing unit.

FIG. 1 is a block diagram showing a first embodiment of the present invention. FIG. 5 is a block diagram showing a second embodiment of the present invention. The figure which shows an example of the trend graph screen in the 1st, 2nd embodiment of this invention. The figure which shows an example of the trend graph screen in the 2nd Embodiment of this invention.

First Embodiment
Hereinafter, a first embodiment according to the present invention will be described with reference to FIG. FIG. 1 is a block diagram showing a first embodiment of the present invention.

  The plant device 1 indicates a sensor that measures a temperature, a flow rate, or the like, and an actuator such as a pump or a valve. The plant device control means 2 inputs information from the sensor of the plant device 1 and gives the actuator of the plant device 1 a command of operation / stop and open / close. Based on various data from the plant equipment 1, a monitoring control program registered in advance is activated to generate a control signal, control the plant equipment 1 to be monitored and controlled, and control the operation of the plant. The plant device control means 2 can be realized, for example, by using a PLC (Programmable Logic Controller), and the exchange of signals with the plant device 1 is by an electric signal such as a DC 4 to 20 mA current signal or DC 1 to 5 V voltage signal Communication signals such as serial interface such as RS-485 can be used.

  The information processing means 3 is, for example, a normal computer and comprises a CPU, a memory, a disk (nonvolatile memory), an interface, etc., and is connected to the input means 4 such as a keyboard or mouse and the display device 5 such as a CRT device or a liquid crystal monitor. It is done. Further, the information processing means 3 is connected to the plant device control means 2 by a data communication method such as Ethernet (registered trademark), takes in the process value from the sensor of the plant device 1 and displays it on the display device 5. Can be given to the actuator of the plant device 1 to operate it.

  Further, the information processing means 3 analyzes the process value from the plant equipment 1 to determine whether or not the preset alarm condition is satisfied, and generates the alarm data when the alarm condition is satisfied. At the same time, the display unit 5 outputs a window display or an alarm sound notifying the occurrence of an alarm.

  Further, the information processing means 3 links events such as operation history data and alarm history data with occurrence dates and times of the respective data, manages and stores them as an event list, and displays them on the display device 5 as an event list screen.

  Further, the information processing means 3 has a trend management function of storing and updating trend data based on each process value outputted from the plant equipment 1 to be monitored and controlled, and displayed on the display device 5 as a trend graph It is possible to check the state of process values that change with time.

  The information processing means 3 further includes an event processing unit 6 and a trend processing unit 7. The event processing unit 6 stores the occurrence date and time of an event, for example, when an event whose detail is desired to be checked is arbitrarily selected from the event list displayed on the display device 5. The trend processing unit 7 displays the trend graph screen on the display unit 5 as shown in FIG. 3 so that the date and time stored in the event processing unit 6 is positioned at the center of the time axis of the trend graph screen. At this time, the trend graph for any other process value displays the date and time stored in the event processing unit 6 so as to be positioned at the center of the time axis of the trend graph, so Whether it is a state or what kind of behavior the process value shows can be confirmed for each of the plurality of process values without setting the date and time. The designated date and time is positioned at the center of the time axis of the trend graph screen in order to make it easy to check what the behavior of the plant is before and after the event occurrence date and time.

  Thereby, in the plant monitoring control device of the present embodiment, the specified date and time to be displayed and the cycle are fixed, and trend graph display of other related process values is displayed at the same time and same cycle even if screen transition is performed. By this, it is possible to quickly compare the trend of the process value of the abnormal situation and the trend of the process value of the past, and prevent collection and expansion of the plant abnormal situation.

  The reset of the date and time stored in the event processing unit 6 may be performed by providing a reset button on a menu screen or the like in advance and resetting from the input unit 4.

Second Embodiment
Next, a second embodiment according to the present invention will be described with reference to FIG.

  The second embodiment differs from the first embodiment in that the information processing means 3 is provided with a trend comment processor 8. In plant monitoring, there is a demand to keep some comments as notes when the trend graph is checked. For example, when an abnormal operating condition occurs, leave a comment on the trend graph showing its features Note, when the same abnormal state occurs again, by searching for the comment left in the memo, it is possible to quickly find the trend graph confirmed at the time of the previous occurrence, and to take prompt measures. In order to realize this, the trend comment processing unit 8 selects an arbitrary place on the graph of the trend graph displayed on the display means 5 and inputs a related comment from the input means 4 to enter the comment and the selected graph. Save the date and time corresponding to any place. The state which selected the arbitrary places on the graph and left the comment is shown in FIG. Then, a comment matching with the keyword search is extracted from the stored comments based on the keyword input from the input means 4, and the date and time stored as a set with the comment are stored in the event processing unit 6. The subsequent steps are the same as in the first embodiment, as shown in FIG. 3 so that the trend processing unit 7 locates the date and time stored in the event processing unit 6 at the center of the time axis of the trend graph screen. Display the trend graph screen on 5.

  Thereby, for example, when an abnormal driving state occurs, a comment is left on the trend graph indicating the feature, and when a similar abnormal state occurs again, the comment left in the memo is searched for the previous time. By quickly finding the trend graph identified when it occurs, you can take prompt action.

  While certain embodiments have been described, these embodiments have been presented by way of example only, and are not intended to limit the scope of the invention. These novel embodiments can be implemented in various other forms, and various omissions, substitutions, and modifications can be made without departing from the scope of the invention. These embodiments and modifications thereof are included in the scope and the gist of the invention, and are included in the invention described in the claims and the equivalent scope thereof.

1 ... plant equipment 2 ... plant equipment control means 3 ... information processing means 4 ... input means 5 ... display means 6 ... event processing unit 7 ... trend processing unit 8 ...・ Trend comment processing unit

Claims (4)

In a plant monitoring apparatus that monitors an operating state of a plant using a trend graph and an event list displayed on display means,
An event processing unit that stores occurrence date and time of any event selected from the event list displayed on the display unit;
A plant monitoring apparatus comprising: a trend processing unit that outputs a trend graph to the display unit with the event occurrence date and time stored in the event processing unit as the center of a time axis. In the plant monitoring device according to claim 1,
An arbitrary point on the graph of the trend graph displayed on the display means is selected, a related comment is inputted from the input means, a date and time corresponding to an arbitrary point on the selected graph and the comment are stored, A trend comment processing unit that extracts a comment that matches by a keyword search from the stored comments based on a keyword input from an input unit, and stores the date and time corresponding to the extracted comment in the event processing unit And a plant monitoring device. In a plant monitoring apparatus that monitors an operating state of a plant using a trend graph and an event list displayed on display means,
A plant monitoring method, which stores occurrence date and time of an arbitrary alarm selected from an event list displayed on the display unit, and outputs the trend graph to the display unit with the stored event occurrence date and time as a center of time axis. In the plant monitoring method according to claim 3,
An arbitrary point on the graph of the trend graph displayed on the display means is selected, a related comment is inputted from the input means, a date and time corresponding to an arbitrary point on the selected graph and the comment are stored, From the stored comments based on the keywords input from the input means, comments that match are extracted by keyword search,
The plant monitoring method which makes the event processing part memorize the date and time corresponding to the extracted comment.

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