JP2902190B2 - Alarm control device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a steelmaking plant,
The present invention relates to an alarm control device for performing an alarm output control in a process monitor with a CRT used in various plants such as a pulp and paper manufacturing plant, a waste treatment plant, and a waterworks management plant.

[0002]

2. Description of the Related Art In recent years, the operation and monitoring of a plant has been shifted from a control panel to a process monitoring apparatus with a CRT capable of realizing a small space, low cost, and labor saving. For this reason, the information monitored by the large control panel of several tens of meters is divided into several screens for monitoring, and the process monitoring device with a CRT has an alarm function for notifying a plant abnormality. It was an important factor in determining the quality of surveillance.

Conventionally, a process monitor with a CRT generally has a configuration shown in FIGS. That is, the casing 100 is provided with a CRT display device 101 and a keyboard 102 for inputting operations.

As an alarm control device, "AL" displayed on a CRT display device 101 as shown in FIG.
The color of the “ARM” display 103 is changed and blinked, the color of the corresponding portion 104 in the plant flow is changed and blinked, and furthermore, an alarm is sounded by a buzzer built in the housing 100 to notify the plant monitor of the abnormality. I was Then, the plant monitor presses the buzzer stop key 106 on the keyboard 102 as shown in FIG. 8 to stop the alarm buzzer, confirms the content of the alarm, and then stops the blinking of the alarm by pressing the alarm confirmation key 107. Had a configuration.

In such an alarm control device, the alarm set values for various process signals such as temperature, pressure, flow rate, etc. are often determined in advance. As a situation that occurs during a transitional operation such as a shutdown operation of the vehicle, an alarm is generated in a state that is not actually abnormal.

Therefore, in order to cope with this, a conventional alarm control device uses an alarm that is not actually an alarm that occurs during a transient operation such as a start-up operation, a fall operation, or a transition period. 1) A huge amount of alarm processing software corresponding to the process is created and installed in the process control device. 2) A function for permitting / prohibiting the alarm issuance for each signal in the process monitoring device with a CRT is operated each time. , 3) An announcement display such as "Ignore the alarm" or a voice notification was performed.

[0007]

However, in such a conventional alarm control device, although the process monitoring device with a CRT itself is versatile and can be used for various plants, individual warning devices for each plant are required. Equipped with software and functions for relatively simple alarm issuance control is not versatile, costs are increased, and the advantages of introducing a process monitoring device with a CRT are reduced.

The present invention has been made in view of such a conventional problem, and in a process monitoring apparatus with a CRT, necessary and unnecessary alarms are stored during a normal alarm check operation. An object of the present invention is to provide an alarm control device that can perform good alarm generation control.

[0009]

SUMMARY OF THE INVENTION An alarm control device according to the present invention provides an alarm for various process signals which do not need to be confirmed and which are generated during a transient operation such as a plant start-up operation or a shutdown operation. An alarm confirmation file stored under an AND condition of a satisfied condition and a condition of a transient operation of the plant, mode instruction means for instructing an alarm storage mode, an alarm control mode or a normal mode, and input means for various process signals. , An alarm output means for outputting an alarm for various process signals, and a control means for performing the following operation control.

A) When the mode instruction means is instructing the alarm storage mode, alarms for various process signals generated during the transient operation of the plant that need not be confirmed are stored in the alarm storage file. B) When the mode instruction means is instructing the alarm control mode, the alarm confirmation file is searched for the process signal in which the alarm output condition is satisfied during the transient operation of the plant and the alarm signal is determined to be unnecessary. If the alarm is not registered, the alarm is not output. C) If the alarm output condition of various process signals is satisfied when the mode instruction means is instructing the normal mode,
The alarm output means outputs an alarm.

[0011]

According to the alarm control device of the present invention, at the time of a transitional operation such as the initial start-up operation or the shutdown operation of the plant,
The mode indicating means is set to the alarm storage mode, and during the alarm for various process signals generated during the transient operation of the plant, those which need not be confirmed are stored in the alarm storage file.

In the case of actual transitional operation such as start-up operation or shutdown operation of the plant, the mode indicating means is set to the alarm control mode, and the process in which the alarm output condition is satisfied during the transient operation of the plant is performed. For a signal, an alarm confirmation file is searched, and if it is registered as an unnecessary alarm, an alarm is not output, and an alarm that is not an actual alarm is not issued unnecessarily. To avoid confusion due to the issuance of various alarms.

[0013]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below in detail with reference to the drawings.

The CR to which the alarm control device of the present invention is applied
As described in the description of the conventional example, the process monitor with T generally has the configuration shown in FIGS. 6 to 8, and the alarm control device according to the embodiment of the present invention uses this CR.
Although it is incorporated as an alarm control software program executed by a computer provided in the process monitoring apparatus with T, the configuration shown in FIGS. 1 to 3 is functionally described.

That is, an input unit 1 for various process signals,
An alarm output unit 2 that outputs an alarm as shown in FIGS. 6 to 8 when an abnormality occurs with respect to various process signals, and a check that occurs during a transient operation such as a start-up operation or a shutdown operation of a plant. For the alarms for various process signals that do not need to be performed, the condition of the alarm and the condition of the start-up operation or the shutdown operation of the plant
An alarm confirmation file 3 stored under the D condition, an alarm storage mode, an alarm control mode, or a normal mode, a mode instruction unit 4, and a control unit 5 are provided.

The alarm confirmation file 3 is composed of files 31 and 32 for storing alarms that are not alarms during the plant start-up operation and the plant shutdown operation.

The mode instructing section 4 outputs a normal mode 41, an alarm storage mode 42 or an alarm control mode 43 on the screen of the CRT display device 101 as shown in FIG.

Here, the normal mode 41 is a mode in which the alarm control processing of the present invention is not performed, and an alarm is output when an alarm generation condition of the process signal is satisfied.

The alarm storage mode 42 groups the process signals for each of the devices A, B, C,... As schematically shown in FIG. The process signals 121 and 1 of the process signal group 12 generated during (start of operation of the device A)
22, for each alarm, if it can be ignored, press the alarm storage confirmation key 107 shown in FIG. 8 to confirm it, and start the operation in the alarm confirmation file 3 for each process signal. Is stored in the file 31 at the time, and the alarm generated within a few minutes after the fall of the operation signal 11 of the device A (operation stop of the device A) is similarly processed for each of the process signals 121, 122,. In this mode, an alarm that can be ignored is confirmed by pressing the alarm storage confirmation key 107, and this is stored in the operation stop file 32 in the alarm confirmation file 3 for each process signal.

The alarm control mode 43 is a mode in which an alarm is controlled by the alarm control device according to the present invention. A start of operation)
In addition, if the alarm is stored in the operation start alarm confirmation file 31, no alarm is issued, and when the process signal satisfies the alarm generation condition, a few minutes after the fall of the operation signal of the device A (operation of the device A) In this mode, the alarm is not issued if the alarm is stored in the operation stop alarm confirmation file 32.

Next, the operation of the alarm control device having the above configuration will be described.

First, for the initial setting, at the time of start-up operation for starting operation of the first plant and at the time of shutdown operation for stopping operation, registration in the alarm confirmation file 3 is performed according to the procedure shown in the flowchart of FIG. Done.

That is, when the control unit 5 confirms that the mode instructing unit 4 designates the alarm storage mode 42, the control unit 5 sends a message to each device A, B,. On the other hand, the device, for example, FIG.
When the operation signal 11 of the device A shown in FIG. 1 is ON, each of the process signals 121, 122,
If an alarm generation condition is satisfied for..., An alarm is issued (step S1). If the plant supervisor determines that the alarm does not need to be confirmed during the start-up operation or the shutdown operation, an alarm is issued. By confirming by pressing the confirmation key 107 (step S2),
The process signal is stored in the alarm storage file 3 in the operation start file 31 or the operation stop file 32 (step S3).

This procedure is stored for each of the grouped devices A, B,... And for each process signal, and is repeated until the alarm mode is switched to the normal mode or the alarm control mode (step S4). For all the process signals for which an alarm is issued at the time of start-up operation or at the time of fall-off operation, those which do not need to issue an alarm are registered.

When the registration in the alarm storage file 3 is completed in this manner, the mode instructing unit 4 enters the alarm control mode 43 in the subsequent start-up operation or fall-down operation.
The alarm control operation is executed according to the flowchart of FIG.

That is, if the mode control section 43 designates the alarm control mode 43 with the mode instructing section 4, the control section 5 responds to the process signal in which the alarm output condition is satisfied during the plant start-up operation or the plant shutdown operation (step S11). Warning confirmation file 3
(Step S12). If the alarm is not registered, the alarm is not output (step S13). If the alarm is not registered, the alarm is issued (step S14). If the alarm is confirmed, the alarm is stopped (step S15). , S16).

Then, the alarm control mode is continued until the mode shifts to the normal mode 41 or until a complete stop state is reached (step S17).

When the start-up operation of the plant is completed and the operation shifts to the normal operation, the mode instructing unit 4 instructs the normal mode 41. Thereafter, if the alarm output conditions of various process signals are satisfied, the alarm output unit 2 Will output an alarm.

As described above, the control unit 5 controls the issuance of an alarm in accordance with the operating state of the plant. Conventionally, the alarm is issued during the transient operation of the plant as in the normal operation mode. By controlling so that a warning is not issued for a process signal which is not actually abnormal, a plant supervisor is prevented from being confused and is easily monitored.

In the above-described embodiment, the transitional operation is described for the start-up operation and the shutdown operation of the plant. However, the present invention can be applied to the transient operation for increasing or decreasing the output.

[0031]

As described above, according to the present invention, the conditions for establishing such an alarm are registered for an alarm that is not actually an alarm that occurs during a transient operation such as when the plant is started up or shut down. In the meantime, during the transient operation, if the registered information is searched and it is determined that there is no need to issue the alarm, the alarm is not issued. Even if it is not necessary to register the necessity of an alarm with a software program, the alarm control corresponding to the plant can be performed by registering the actual plant at the plant installation site during transitional operation such as start-up operation and shutdown operation. And the function
By incorporating it in a process monitoring device with a T, it can be widely used in various plants and cost can be reduced.

[Brief description of the drawings]

FIG. 1 is a functional block diagram of one embodiment of the present invention.

FIG. 2 is a block diagram showing a configuration of a mode instruction unit in the embodiment.

FIG. 3 is an alarm group management chart for process equipment A in the embodiment.

FIG. 4 is a flowchart showing an alarm storage procedure in the alarm storage mode of the embodiment.

FIG. 5 is a flowchart showing an alarm control procedure in the alarm control mode of the embodiment.

FIG. 6 is a perspective view of a general process monitor with a CRT on which the alarm control device of the embodiment is mounted.

FIG. 7 is an explanatory diagram showing a warning display mode on a CRT display device of the process monitoring device with a CRT.

FIG. 8 is a plan view showing a part of a keyboard of the process monitoring apparatus with a CRT.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Input part 2 Alarm output part 3 Alarm confirmation file 4 Mode instruction part 5 Control part

Claims (1)

(57) [Claims] 1. An alarm for various process signals that do not need to be confirmed and that is generated during a transient operation such as a plant start-up operation or a shutdown operation is referred to as a condition for establishing the alarm and during a transient operation of the plant. Alarm confirmation file to be stored in an AND condition with the condition, mode instructing means for instructing the alarm storage mode, the alarm control mode or the normal mode, input means for various process signals, and alarm output means for outputting an alarm for various process signals And an alarm control device comprising: control means for performing the following operation control. a) When the mode indicating means is instructing the alarm storage mode, during the alarm for various process signals generated during the transient operation of the plant, those which do not need to be confirmed are stored in the alarm storage file; b) When the mode instruction means is instructing the alarm control mode, the alarm confirmation file is searched for the process signal in which the alarm output condition is satisfied during the transient operation of the plant, and the process signal is registered as unnecessary. C) if the mode output means is instructing the normal mode and the alarm output conditions of various process signals are satisfied,
The alarm output means outputs an alarm.