JPS5856093A - Alarm output method - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an alarm output method in a system in which monitoring and control of various plants is executed by a computer.

Recently, computers are being used for plant monitoring and control.
became. For this reason, what used to be the output of alarms based on conventional pressure control signals, etc., is inputted into a computer to input various signals (digital signals, analog signals, etc.) Analog value validity errors, upper and lower limit check errors, etc.)
The computer peripheral device such as a CRT display device or a computer peripheral device ζ now outputs a message. The change is the alarm sound (bell) that was output in the past.

Buzzer, etc.) is output by computer C2 (it is becoming two).

Until now, in such computer-based plant monitoring systems, digital signals (for each signal, a typewriter device (= whether to print or not) and a CRT display (= whether to display or not) have been used. In addition to setting data for determining (2) data for determining whether or not to output an alarm sound in response to the above signal, and what type of alarm sound to output, etc.

However, since these data were fixed when the system was generated, the following problems occurred.For example, the equipment adjustment special feature C2 is the same as during normal operation, so it cannot be used during normal operation. Although sometimes necessary, useless information that does not require operator confirmation or recording is output (message print 9 display and alarm sound output) during adjustments etc. Also, usually at night, the level of emergency is It is sufficient to issue a warning only for those with a high
An alarm sound is output in response to a relatively low-urgency signal 4=, forcing the operator to waste effort such as checking the message 4;\-.

In order to eliminate the above-mentioned problems, the output of the message can be canceled as necessary, or the alarm sound can be prevented from being output (= means that the operator can switch the necessity of the alarm output for each signal each time, The alarm system itself was turned off with a switch.

However, in the former case, it takes a lot of effort to specify each point in step 4, and in the latter case, the operator is required to specify each point.
There were problems such as necessary emergency warnings not being output.

The purpose of the present invention is to compensate for these drawbacks, to inform the operator of only the necessary information when adjusting equipment or during nighttime special use, and to facilitate changing operations for this purpose. In the following description, the alarm output of a digital signal will be described as an example.

The IS1 diagram is an example of a simple hardware configuration for implementing the present invention. In the figure, 11 is an arithmetic processing unit including a main memory, 12 is an auxiliary memory that stores and measures data necessary for outputting an alarm, and 13 is a typewriter for outputting messages about the plant status. 14 is a CRT display device that also displays messages; 15 is a CR
A keyboard is used to set and change data on the T display device, 16 is a process input/output device for inputting and outputting signals, l is a status signal input from the plant side, and 18 is for outputting an alarm sound. It is an alarm.

The processing procedure of the present invention in a system with such a configuration!
J! This will be explained using FIGS. 2 and 3 and Table 1.

First, in the system design stage (step 81), the signal 1 input to the calculation ME is identified, and each point of the signal 1 is evaluated, and the reference example (2) shown in Table 14 is used to determine the initial alarm level y. Settings (can be changed as necessary)
And 1 for auxiliary storage device Minoru! As shown in the diagram JIIa, each signal is stored one point at a time (two times) as an alarm information file Fl (step 82).

Fitting 1 The station operator uses the CRT display device 14 and keyboard 15 to check the output level of each alarm! t I X intention * X
I is set and its value is stored in the main memory of the arithmetic and control unit 11 (step S3). For example, x is the output level for generating an alarm sound, ! ! is CRTi! Display device 1
The display level for displaying 4 messages, Xj is the display level for outputting 4 messages from the typewriter device 134. And the one that emits the alarm sound is −x
f For the signal above the alarm level y-bX@2'' set in rough 82, set the alarm sound output level x1 to @2
Similarly, what you want to display a message on the 42 CRT display device 14 is a signal with an alarm level y of 13" or higher (one example is the CRT display level What we would like to do is to set the typewriter output level xB to 141'' for a signal with alarm level y @4''4''.

Steps S1 to S3 above show the procedure for setting up a computer system (2), and steps s4 and subsequent steps described below show the operating process of the computer. First, in step s4, the state of the plant is determined. change,
When the computer state signal amount is input, the arithmetic and control unit j/
In Itll, the alarm level y corresponding to the hexagonal signal 7, for example, the main engine major failure signal l, is extracted from the auxiliary storage device 12 (= stored alarm information file F1).Next, in step S5, the alarm level y corresponding to the above signal 1 is extracted. Comparing level y with alarm sound output level X set in step S3, if alarm level y has a higher priority (lower numerical value), the alarm 18 Then, an alarm sound is output (step 86).In step S7, the alarm level y is compared with the CRT fi display output level X, and if the alarm level y has a higher priority, the CRT display device 14 is A message is displayed (step 88). In step S9, the alarm level y is compared with the typewriter output level X, and if the alarm level y has a higher priority, the message is printed on the typewriter device 13. (Step 510). For example, if the alarm level of the input signal 1 is @3", and each alarm output level is set to the value described above, no alarm sound is output, and the CRT display device 14 and typewriter device 13, the message will be output.

If the next 10 signals are input, the processing from step S4 onwards is performed for each input signal (two times).In addition, only particularly important ones such as at night are outputted with an alarm sound or a message is displayed on the CRT & water device 14, and for other signals If only recording is required, the respective output levels xI are recorded using the CRT display device 14 and keyboard 15 in step S3.
.

By changing Xt and Xm, each signal point (
= When making changes, it is easily possible.

As mentioned above, the same method can be applied to errors when checking not only digital signals but also analog signals, errors when checking integrated values, etc., and can also be applied to hardware configurations. Can be applied to various systems.

As described above, in the present invention, two notification levels are provided for each process signal, and each alarm is output as a unit (alarm).

By arbitrarily setting the alarm output level of the typewriter (CRT'), it is possible to output only the alarms necessary at that point in the plant, thereby realizing a system that is easy for operator C2 to monitor.

[Brief explanation of the drawing]

Fig. 1 is a diagram showing an example of the configuration of hardware to which the present invention is applied, Fig. 2 is a flowchart showing a processing procedure in an embodiment of the alarm issuing method according to the present invention, and Fig. 3 is a diagram showing a processing procedure used in the present invention. FIG. 3 is a diagram showing an example of the configuration of a file. 1... Arithmetic control unit, 5... Keyboard, 2.
...Auxiliary storage device, 6...Process input/output device, 3
...typewriter device, l...input signal, 4...
CRT display device, 8...Alarm, (7317) Agent: Patent Attorney Noriyuki Chika (and 1 other person) Figure 1 Figure 2 Figure 3

Claims (1)

[Claims] For each signal inputted from the plant side, an alarm level can be set and stored in advance for each signal. When the output level is set and a signal is input from the plant side, the corresponding alarm level is read out and compared with the output level, and if the alarm level has a higher priority than the output level, this output level ( = Alarm output method that causes an output to be generated from the corresponding unit device.