Designing method and system for single variable alarm system's alarm line

A technology of an alarm system and design method, applied in the direction of alarms, instruments, etc., can solve problems such as hidden safety hazards, reduce the effectiveness of the alarm system, etc., and achieve the effect of small false alarm rate and false alarm rate, and large response time.

Inactive Publication Date: 2017-02-01
北京协同创新智能电网技术有限公司
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Problems solved by technology

Due to the incorrect design of the alarm line, the alarm system will generate a large number of false alarms, which will produce a "wolf is coming" effect, which will make the operator question the alarm system
At the same time, the alarm system will also generate a large number of missed alarms, thereby reducing the effectiveness of the alarm system and bringing great safety hazards to the production process

Method used

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  • Designing method and system for single variable alarm system's alarm line
  • Designing method and system for single variable alarm system's alarm line
  • Designing method and system for single variable alarm system's alarm line

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Embodiment Construction

[0024] The principles and features of the present invention are described below in conjunction with the accompanying drawings, and the examples given are only used to explain the present invention, and are not intended to limit the scope of the present invention.

[0025] Such as figure 1 As shown, a method for designing an alarm line of a single-variable alarm system includes the following steps:

[0026] S1, obtain the process signal and perform state division to obtain a series of discrete states.

[0027] Specifically, the implementation of S1 includes: sorting the original sample data x(t) of the process signal in ascending order to obtain sequential sample data x o (t), according to the sequential sample data x o (t) Determine the interval interval, determine the state of the original sample data according to the interval of the original sample data, and obtain a series of discrete states, wherein each state includes Z number of samples, and Z is a positive integer.

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Abstract

The invention relates to a designing method and system for single variable alarm system's alarm line. The method comprises the following steps: obtaining process signals; dividing the process signal according to their states; obtaining a series of discrete states; employing a smooth method to conduct smooth processing to the divided states so that the process signals only transfer between adjacent states; using the classical approximation method to estimate a one-step transfer matrix from the process signals after smooth processing; using the one-step transfer matrix to calculate the statistics in an alarm probability graph; and using the statistics in the alarm probability graph to construct a decision function; calculating the decision function value of each state signal; and setting the alarm line at the position with the maximum decision function value. According to the invention, it is possible to design a single variable alarm system's alarm line, which can reduce the erroneous report rate and leakage detection rate of an alarm system and enables the operation men to have more time to react on the alarm.

Description

technical field [0001] The invention relates to the technical field of industrial alarm system management, in particular to an alarm line design method and system for a single variable alarm system. Background technique [0002] Alarm is a visual and auditory way to remind the operator that there is a fault or abnormality in the industrial process. An effective alarm system is crucial to the safety of the production process and the effectiveness of the operation. Therefore, the research on the alarm system has received more and more attention from the industry and academia. Among all the parameters that can be set in the alarm system, the alarm line is the most important one. Due to the incorrect design of the alarm line, the alarm system will generate a large number of false alarms, which will produce a "wolf is coming" effect, so that the operator will question the alarm system. At the same time, the alarm system will also generate a large number of missed alarms, thereb...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G08B29/18
CPCG08B29/185
Inventor 王建东余彦杨子江钱文华
Owner 北京协同创新智能电网技术有限公司
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