A Fire State Detection Method Based on d-s Evidence Theory

A technology of evidence theory and state detection, applied to fire alarms based on smoke/gas effects, fire alarms, and based on specific mathematical models, can solve problems such as high false alarm rate, inaccurate detection, and mutual interference. Achieve the effect of reducing the false alarm rate, improving the accuracy rate, and reducing the loss of property

Active Publication Date: 2022-06-03
UNIV OF ELECTRONICS SCI & TECH OF CHINA +1
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  • Description
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  • Application Information

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Problems solved by technology

However, there are still some problems: there are connections between data sources and mutual interference, which will cause inaccurate detection and high false alarm rate, which cannot meet people's needs

Method used

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  • A Fire State Detection Method Based on d-s Evidence Theory
  • A Fire State Detection Method Based on d-s Evidence Theory
  • A Fire State Detection Method Based on d-s Evidence Theory

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Embodiment Construction

[0042] The embodiments of the present invention are described below through specific specific examples, and those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments, and various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention.

[0043] like figure 1 As shown, this embodiment provides a fire state detection method based on the D-S evidence theory, and the fire state detection method includes:

[0044] 1) Determine the fire judgment threshold Pmax, the early warning threshold Pmin and the fire judgment probability function;

[0045] 2) Determine the data source as temperature, smoke concentration, CO concentration, the difference between the concentration and the in...

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Abstract

The invention discloses a fire state detection method based on D‑S evidence theory, and relates to the field of digital signal processing. The present invention adopts temperature, smog concentration, CO concentration, O 2 The difference between the concentration and the initial concentration of the environment, and the environmental characteristic data of the heat release rate are used to calculate the probability of no fire, the probability of smoldering fire, and the probability of open flame, and then fuse the calculated probability of smoldering fire and open flame to obtain the probability of fire occurrence Probability; through the method of the present invention, the state of fire occurrence can be effectively monitored, the occurrence of fire can be detected in time, it is convenient to take remedial measures, and the loss of property can be reduced; the method of the present invention, on the basis of reducing the false alarm rate, improves the fire detection The accuracy rate is at least 2S earlier than the current common data source temperature, CO concentration, and smoke concentration detection fire occurrence time.

Description

technical field [0001] The invention relates to the field of digital signal processing, in particular to a fire state detection method and device based on D-S evidence theory. Background technique [0002] Among many disasters, fire is becoming one of the main disasters in the current society. The occurrence of fire will cause huge property losses and casualties, and bring immeasurable harm to the society. Especially with the development of society, the urban population is becoming more and more dense, and the popularization of electrical automation has brought high security risks. The number of fires and the losses caused are increasing year by year. Therefore, how to accurately detect fire has become an urgent problem to be solved. [0003] For the current fire detection system, people not only hope to detect the occurrence of fire as soon as possible, but also hope to improve the detection accuracy, reduce the false alarm rate, and avoid additional human resource consump...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G08B17/00G08B17/10G08B21/18G06N7/00G01K13/00G01N15/06G01N33/00
CPCG08B17/00G08B17/10G08B21/182G01K13/00G01N15/06G01N33/0063G01N33/0036G01N33/004G06N7/01Y02A90/10
Inventor 卫伯言林水生朱磊基熊勇于良杨海芬
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA
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