Fire sign detection device and method

A detection device and symptom technology, which is applied in the field of fire symptom detection devices, can solve the problems of submersion of interfering objects, increase the probability of false alarms of symptom detectors, etc., and achieves the effect of improving reliability

Active Publication Date: 2015-03-25
SHENYANG FIRE RES INST OF MEM
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Problems solved by technology

However, due to the weak sign information, it is easy to be submerged with the disturbances in the environment. High-sensitivity detection may lead to an increase in the false alarm probability of the sign detector in some cases. The sign detector is a feature of high-sensitivity signs The specific implementation of attribute

Method used

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  • Fire sign detection device and method
  • Fire sign detection device and method

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Embodiment Construction

[0050] The specific implementation manners of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0051] According to the corresponding conclusions of the study on the determination of fire signs and the selection of detection technology, the early signs of fire of typical combustibles in the target protection site are pyrolysis particles, which are a kind of aerosol particles, so they can be detected by light scattering technology. Symptom detection principle such as figure 1 As shown, a light source irradiates the pyrolysis particle introduction area. In the absence of pyrolysis particles, the light propagates in a straight line, but when there are pyrolysis particles, due to the scattering effect of the particles on light, other directions other than the linear propagation direction The direction also has scattered light, and the detection of signs can be completed by collecting and sensing the scattered light.

[0052] ...

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Abstract

The invention provides a fire sign detection device and method. The device comprises a shell, a shading hood, a suction fan, a master control unit and a detection assembly. The suction fan, the master control unit and the detection assembly are arranged in the shell, the suction fan is located at a suction inlet of an upper cover, the input end of the suction fan is connected with a fan control output end of the master control unit, a detection chamber of a maze structure is disposed in the inner space of the shell, the detection assembly arranged in the detection chamber comprises a light source module and a scatter receiving detection amplifier circuit module, the light source module comprises two emitting tubes and two collimating lenses, and the input ends of the two emitting tubes are connected with the light source control output end of the master control unit. Multi-information synthesis detection is combined with a sunk detection light path structure of special design so that sensitive detection of micro sign information in the pyrolysis process in a fire breeding stage can be achieved, meanwhile, categories of pyrolysis particles with different attributes are judged, early sign detection is achieved, and meanwhile reliability of a detector is greatly improved.

Description

technical field [0001] The invention belongs to the technical field of fire sign detection, and in particular relates to a fire sign detection device and method. Background technique [0002] Fires caused by electrical reasons account for a quarter of the fire accidents over the years. Therefore, electrical fire prevention is the top priority in fire safety, especially all kinds of power distribution cabinets, switch cabinets, control cabinets, etc., which carry electrical energy. For important functions such as transmission and distribution or signal decision-making, early detection of fires for such cabinet-type electronic control equipment has always been a practical need in safety production, and it is of great significance to prevent fires, protect people's lives and property, and avoid huge economic losses. [0003] In all kinds of cabinet-type electronic control equipment, although there are overcurrent or residual current monitoring and protection devices to prevent ...

Claims

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Application Information

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IPC IPC(8): G01V8/20
Inventor 王勇俞王力潘刚
Owner SHENYANG FIRE RES INST OF MEM
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