Jitter alarm and repeated alarm online elimination method and system

An alarm system and alarm signal technology, applied in the field of automation, can solve problems such as distrust, ignoring alarm information, and affecting the performance of industrial alarm systems.

Active Publication Date: 2017-07-21
SHANDONG UNIV OF SCI & TECH
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  • Abstract
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  • Claims
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Problems solved by technology

Such alarm signals are interference alarms, which will seriously affect the performance of the industrial alarm system, not only causing the useful alarm information to be submerged, but also causing operators to ignore the alarm information for a long time due to the "wolf is coming" effect, mistrusting or even shutting down the industrial system. alarm system

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  • Jitter alarm and repeated alarm online elimination method and system
  • Jitter alarm and repeated alarm online elimination method and system
  • Jitter alarm and repeated alarm online elimination method and system

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Embodiment Construction

[0059] Below in conjunction with accompanying drawing and embodiment the present invention will be further described:

[0060] It should be pointed out that the following detailed description is exemplary and intended to provide further explanation to the present application. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.

[0061] It should be noted that the terminology used here is only for describing specific implementations, and is not intended to limit the exemplary implementations according to the present application. As used herein, unless the context clearly dictates otherwise, the singular is intended to include the plural, and it should also be understood that when the terms "comprising" and / or "comprising" are used in this specification, they mean There are features, steps, operations, means, components and / or combinations the...

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Abstract

The invention relates to a jitter alarm and repeated alarm online elimination method and system, and the method comprises the following steps: (1), selecting an alarm signal in an alarm time period ts-te, converting the alarm signal into a first alarm sample which takes 0 as a normal state and 1 as an alarm state, wherein alarm signals corresponding to ts and te are normal states; (2), initializing a parameter m of an alarm delayer, carrying out the prediction and assignment of the first alarm sample, and obtaining a second alarm sample; (3), calculating an alarm duration time sequence or an alarm time interval sequence of the second alarm sample; (4), carrying out the hypothesis testing of the alarm duration time sequence or the alarm time interval sequence, and judging whether the parameter of the alarm delayer needs to be updated or not; (5), updating an alarm time period, and repeatedly carrying out the steps (1)-(4). According to the invention, the method facilitates the reduction of jitter alarm and repeated alarm in an industrial alarm system, and brings convenience to an operator for timely finding a really useful alarm.

Description

technical field [0001] The invention relates to the field of automation technologies such as industrial alarm systems, in particular to an online elimination system and method for jitter alarms and repeated alarms. Background technique [0002] Alarm is a visual and auditory way to remind the operator that there is a malfunction or abnormal condition in the industrial process, which plays a vital role in the safety and efficiency of the production process. Therefore, the research on the industrial alarm system has received more and more attention from the industry and academia. However, due to the influence of external disturbances such as noise, the industrial alarm system will generate a large number of disturbing alarms such as jitter alarms and repeated alarms. These nuisance alarms are the constant transition of the alarm variable between the alarm state and the normal state without operator intervention. Such alarm signals are interference alarms, which will seriousl...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G08B29/18
CPCG08B29/185
Inventor 王建东
Owner SHANDONG UNIV OF SCI & TECH
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