JPH05231884A - Plant surveillance device - Google Patents

Abstract

PURPOSE:To obtain a plant surveillance device capable of indicating data relating to an alarm on a screen with one touch operation or automatically in case of generating alarm. CONSTITUTION:A central processing unit CPU is provided, which writes plant data on a present value table 2, periodically compares the content of a present value table with the content of an alarm limit table 3, judges whether the alarm is issued and sets the compared result in a state flag table. The central processing unit CPU has a judgment process result table 5 consisting of the state flag table and a corresponding screen number column and scans periodically the state flag table column. If it detects the setting of the alarm flag, it sends the alarm signal to an alarm information device 7.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a plant monitoring apparatus capable of monitoring the state of a blunt and displaying plant data on an operator screen on demand.

[0002]

2a to 2c are diagrams showing the concept of signal and data flows in a conventional plant monitoring apparatus. In FIG. 2a, P is a plant and CPU is a central processing unit. Reference numeral 1 is a data collection program for collecting data from a plant, 2 is a current value table in which data is set by the data collection program 1, and 3 is an alarm limit table. This alarm limit table 3
Has an alarm limit value corresponding to each of the present value tables 2 on a one-to-one basis. An alarm detection program 4 detects whether or not the plant is in an alarm state by comparing the current value table 2 and the alarm limit table 3. 10 is a state determination flag table having a state determination flag for each item of plant data, and 11 is a result of the state determination flag table 10. An alarm output program for detecting an alarm if it is an alarm, 7 is When receiving an output signal from the alarm output program 11, the alarm notification device notifies the operator of an alarm and includes a lamp 7A and a display 7B.

In FIG. 2b, 8 is a function button for requesting a screen, 12 is a menu output program for displaying a screen menu when requested by the function button, and 9 is a display device. In FIG. 2c, 13 is an input device for inputting numerical data, 14 is a screen display program for displaying a screen corresponding to the numerical values input by the input device 11, and 15 is data associated with the screen and the screen number. Is a screen corresponding number table.

In this configuration, the data generated in the plant is written in the current value table 2 by the data collection program 1. The alarm detection program 4 periodically scans the current value table 2 and the alarm limit table 3 and sequentially compares the corresponding values. When the alarm state data is detected, the state determination flag table 10 is observed,
When the alarm flag data is newly set, a signal for informing the operator that the corresponding data item is an alarm is sent to the alarm notification device 7.

The operator presses the function button 8 to call the screen concerning the alarm. When the function button 8 is pressed, the menu output program 1
2 is started, a screen menu is displayed on the screen of the output device 9, and the screen designation request from the operator is accepted. When the operator operates the input device 13 and inputs the data of the screen number to be displayed, the screen display program 1
4 is made to correspond to the data of the screen correspondence number table 15 to determine the display screen, and the display screen is output to the display device 9.

[0006]

In this conventional plant monitoring apparatus, even when the operator knows the abnormality of the plant, it displays the required screen related to the alarm.
There is a problem that the operation of several steps is required, it takes time to display the designated screen, and there is a problem that unnecessary data is displayed due to an operation error.

The present invention has been made to solve this problem, and when an alarm occurs, it is an object of the present invention to provide a plant monitoring apparatus capable of displaying the data related to the alarm on the screen by one-touch operation. To aim. The purpose is to provide.

[0008]

In order to achieve the above object, the present invention collects plant data, writes it in a current value table, and periodically compares the content of this current value table with the content of an alarm limit table. In the plant monitoring device including a central processing unit that determines the presence or absence of an alarm and sets the comparison result in the state determination flag table, and a plant monitoring device that includes an alarm notification device and an output device, the central processing unit replaces the state determination flag table. Then, the judgment processing result table including the alarm item column, the state judgment flag data column and the corresponding screen number column, and the alarm signal when the setting of the alarm flag is detected by periodically scanning the state judgment flag data column It has an output processing program to be sent to the alarm notification device, and the output processing program is from the output device. If there is determined, and configured to send a corresponding screen number corresponding to the alarm item which the alarm flag is set to the output device.

According to a second aspect of the present invention, the output processing program sends the alarm signal to the alarm notification device and at the same time sends the corresponding screen number corresponding to the alarm item for which the alarm flag is set to the output device.

[0010]

In the present invention, when the alarm state data is detected, the alarm flag corresponding to the alarm item is set in the state determination flag data column of the determination result processing table 5. When the operator operates the function button after the alarm notification, the corresponding screen number of the alarm item for which the alarm flag is set is directly read to the output device.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings.

In FIG. 1, reference numeral 5 is a determination result processing table, which comprises an alarm item column, a state determination flag data column, and a corresponding screen number column. The alarm detection program 4 periodically scans the current value table 2 and the alarm limit table 3 and sequentially compares corresponding values, and when data in an alarm state is detected, the alarm determination program 4 sets the state determination flag data column in the determination result processing table 5 , Set the alarm flag corresponding to the alarm item. An output processing program 6 periodically scans the state determination flag data column of the determination result processing table 5 and sends an alarm signal to the alarm notification device 7 when detecting that an alarm flag has been set.

The output of the function button 8 is C
It is taken in by the PU and sent to the output processing program 6.
When this signal is input, the output processing program 6 reads the corresponding screen number of the alarm item for which the alarm flag is set in the determination result processing table 5, and outputs the display output signal of this screen number to the output device including the display device 9. The display device 9 displays the data related to the alarm item on the screen by the screen display program of the output device.

In the above embodiment, the output processing program 6 reads the corresponding screen number of the alarm item when the operator operates the function button 8. However, the output processing program 6 sends an alarm signal to the alarm notification device 7. At the same time as sending, the corresponding screen number is output device 9
It may be configured to read to.

[0015]

As described above, according to the present invention, when the operator operates the function button after the alarm is notified, the corresponding screen number of the alarm item for which the alarm flag is set is directly read to the output device. It is possible to immediately display a required screen related to the alarm and prevent occurrence of a situation in which unnecessary data is displayed due to an operation error.

[Brief description of drawings]

FIG. 1 is a block diagram showing an embodiment of the present invention.

FIG. 2 is a diagram showing a data / signal flow of data output processing and abnormality detection processing in a conventional plant monitoring apparatus.

[Explanation of symbols]

 1 Data collection program 2 Current value table 3 Alarm limit table 4 Alarm detection program 5 Judgment result processing table 6 Output processing program 7 Alarm notification device 8 Function button 9 Display device CPU Central processing unit

Claims (2)

[Claims] 1. The plant data is collected and written in the present value table, the contents of the present value table are periodically compared with the contents of the alarm limit table to determine the presence or absence of an alarm, and the comparison result is a state determination flag table. In a plant monitoring device provided with a central processing unit to be set to, and an alarm notification device and an output device, the central processing unit is replaced with the state determination flag table, and an alarm item column, a state determination flag data column, and a corresponding screen number. A determination processing result table including columns, and an output processing program that sends an alarm signal to an alarm notification device when the setting of an alarm flag is detected by periodically scanning this state determination flag data field. Is the alarm item with the above alarm flag set when requested by the operator. A plant monitoring device, wherein the corresponding screen number corresponding to is sent to the output device. 2. The output processing program sends an alarm signal to the alarm notification device and at the same time sends a corresponding screen number corresponding to the alarm item for which the alarm flag is set to the output device. Plant monitoring equipment.