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An infrared-ultraviolet composite flame detector and its detection method

A technology of flame detectors and detection methods, which is applied in fire alarms that rely on radiation effects, optical device exploration, etc., can solve the problem of inability to detect small signals, fail to meet the requirements of rapid response to flames, and the anti-interference ability of flame detectors Bad question

Active Publication Date: 2017-11-14
HUBEI JIEXUN PHOTOELECTRIC
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

Both of these two flame detectors have certain limitations: single infrared or single ultraviolet flame detectors have poor anti-interference ability, and are more likely to be affected by background light such as sunlight, heat sources, fluorescent lamps, and incandescent lamps to cause false alarms
Therefore, this type of flame detector cannot meet the requirements of rapid response to flames
In addition, the existing flame detectors mostly use linear amplification technology in the signal processing process, which cannot detect tiny signals. At the same time, the dynamic range is small, resulting in low sensitivity of flame detectors and limited detection distance.

Method used

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  • An infrared-ultraviolet composite flame detector and its detection method
  • An infrared-ultraviolet composite flame detector and its detection method
  • An infrared-ultraviolet composite flame detector and its detection method

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Embodiment Construction

[0015] Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals designate the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary only for explaining the present invention and should not be construed as limiting the present invention.

[0016] In describing the present invention, it is to be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", The orientations or positional relationships indicated by "top", "bottom", "inner", "outer", etc. are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying the It should not be construed as limiting the invention ...

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Abstract

The invention proposes an infrared-ultraviolet composite flame detector, which converts the current from the ultraviolet photoelectric tube and the infrared photodetector through a logarithmic amplifier, so that the flame detector can detect tiny signals. The present invention also provides the detection method of the above-mentioned flame detector, which can detect tiny signals for flame detection.

Description

technical field [0001] The invention relates to the field of fire protection, in particular to an infrared-ultraviolet composite flame detector and a detection method thereof. Background technique [0002] Existing flame detectors are roughly divided into two types, one is a single infrared or single ultraviolet flame detector, and the other is an infrared-ultraviolet composite flame detector. Both of these two flame detectors have certain limitations: single infrared or single ultraviolet flame detectors have poor anti-interference ability, and are more likely to be affected by background light such as sunlight, heat sources, fluorescent lamps, and incandescent lamps to generate false alarms. Therefore, these flame detectors are only suitable for use in enclosed spaces with limited natural light. The traditional ultraviolet-infrared composite flame detector is limited by the use of ultraviolet photocells and has a long response time. Therefore, this type of flame detector...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01V8/10G08B17/12
Inventor 谢永杰杨昕
Owner HUBEI JIEXUN PHOTOELECTRIC
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