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Flame detection method and device

A technology of flame detection and main detection, which is applied in the field of flame detection, can solve the problems of large environmental impact and inaccurate fire signal model, and achieve the effects of accurate judgment, error removal and improved adaptability

Active Publication Date: 2018-05-08
上海曜成电子科技有限公司
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Problems solved by technology

However, since the input signal is a random and irregular waveform, including the environmental background signal and the flame signal, the fire signal model obtained by the traditional algorithm is not accurate enough and is greatly affected by the environment.

Method used

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  • Flame detection method and device

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Embodiment Construction

[0053] In order to make the technical problems, technical solutions and advantages to be solved by the present invention clearer, the following will describe in detail with reference to the drawings and specific embodiments.

[0054] On the one hand, if figure 1 As shown, the embodiment of the present invention provides a flame detection method, including:

[0055] Step 100: Obtain the main detection channel signal and the reference channel signal respectively;

[0056] Step 200: preprocessing the main detection channel signal to obtain the main detection channel preprocessing signal;

[0057]Step 300: Calculate the energy and frequency of the main detection channel preprocessing signal and the reference channel signal respectively to obtain the main detection channel energy, main detection channel frequency, reference channel energy, reference channel frequency and reference channel passing frequency;

[0058] Step 400: Comparing the energy of the main detection channel and...

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Abstract

The invention discloses a flame detection method and device, belonging to the technical field of flame detection. The flame detection method of the invention includes the following steps: acquiring amain detection channel signal and a reference channel signal; preprocessing the main detection channel signal to obtain a main detection channel preprocessed signal; calculating the energy and frequency of the main detection channel preprocessed signal and the reference channel signal to obtain main detection channel energy, main detection channel frequency, reference channel energy, reference channel frequency and reference channel passing frequency; comparing the main detection channel energy and the reference channel energy and comparing the main detection channel frequency, the reference channel frequency and the reference channel passing frequency to obtain a comparison result; and comprehensively analyzing the comparison result to obtain a detection result. The flame detection methodof the invention is simple and efficient. By removing interference signals through preprocessing, carrying out calculation by using multi-channel detection signals and comprehensively evaluating andanalyzing parameters, the analysis is comprehensive, and the judgment is accurate.

Description

technical field [0001] The invention relates to a flame detection method and device, belonging to the technical field of flame detection. Background technique [0002] With the continuous development of flame detection technology, various flame detection systems have emerged. The more common ones are ultraviolet, infrared, red-ultraviolet composite, image, image and infrared composite, etc. Compared with other fire detection systems, the flame detection system is more suitable for large spaces, where open flames appear in the early stage of a fire, and it is necessary to take quick measures against the fire. The flame spectrum produced by substances in the combustion process has energy radiation from infrared, visible light to ultraviolet bands, but mainly infrared radiation, which is why the flame is hot and red when the substance burns, and the flame produces infrared near the 4.3um band. Radiation peak, the use of multi-band flame detectors for fire information detectio...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G08B17/12
CPCG08B17/12
Inventor 王莉许黎霖
Owner 上海曜成电子科技有限公司
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