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Alarm system evaluation method and device based on single analog quantity and alarm delayer

A technology of an alarm system and an evaluation device, which is applied in the field of signal processing, can solve the problems that the operator cannot deal with the alarm in time, lack the accurate definition and calculation method of the alarm performance evaluation index, and ignore the alarm information, so as to ensure the production safety and reduce the interference. The effect of alarm, improved efficiency

Active Publication Date: 2017-07-18
SHANDONG UNIV OF SCI & TECH
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Problems solved by technology

[0002] The alarm system plays a vital role in ensuring the safe production and high-efficiency operation of coal-fired generating units. However, the common problem at present is that there are too many alarm signals, and sometimes hundreds of alarms, causing operators to be unable to deal with these alarms in time, ignoring the alarm information, or even shutting down the alarm system.
In order to judge whether the performance of the alarm system meets the requirements, it is necessary to correctly evaluate the performance of the existing alarm system, but currently there is a lack of accurate definitions and calculation methods for the evaluation indicators of alarm performance.

Method used

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  • Alarm system evaluation method and device based on single analog quantity and alarm delayer
  • Alarm system evaluation method and device based on single analog quantity and alarm delayer
  • Alarm system evaluation method and device based on single analog quantity and alarm delayer

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Embodiment Construction

[0035] 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.

[0036] 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 thereof.

[0037] The delay alarm mechanism is widely used in the industry, and the basic alarm mechanism is a special dela...

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Abstract

The invention discloses an alarm system evaluation method and device based on single analog quantity and an alarm delayer; the method comprises the following steps: using a Markov chain to describe the delay alarm mechanism of the alarm system with preset alarm delay parameters; comparing a single alarm signal sample value with an alarm threshold in the delay alarm mechanism, thus determining the alarm state corresponding to the alarm signal sampling moment; solving an alarm system performance index value according to the alarm state and generation probability described by the Markov chain; respectively comparing the solved alarm system performance index value with the corresponding preset performance index standard value range, thus determining whether the alarm system performance satisfies requirements or not. The method and device can quantitatively evaluate the alarm system performance and determine whether the performance satisfies requirements or not, thus providing reliable basis for the alarm system performance optimization, reducing interference alarms, improving field operator alarm processing efficiency, and ensuring production safety.

Description

technical field [0001] The invention belongs to the field of signal processing, in particular to an alarm system evaluation method and device based on a single analog quantity and an alarm delayer. Background technique [0002] The alarm system plays a vital role in ensuring the safe production and high-efficiency operation of coal-fired generating units. However, the common problem at present is that there are too many alarm signals, and sometimes hundreds of The operator cannot deal with these alarms in time, ignores the alarm information, or even shuts down the alarm system. In order to judge whether the performance of the alarm system meets the requirements, it is necessary to correctly evaluate the performance of the existing alarm system, but at present, there is a lack of accurate definition and calculation methods for the evaluation indicators of alarm performance. Contents of the invention [0003] In order to solve the above problems, the first object of the pre...

Claims

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Application Information

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IPC IPC(8): G08B29/18G08B29/00
CPCG08B29/00G08B29/185
Inventor 王建东
Owner SHANDONG UNIV OF SCI & TECH
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