Flame identification method of double-infrared-channel flame detector

Abstract

The invention discloses a flame identification method of a double-infrared-channel flame detector, which comprises the steps that an MCU (main control unit) collects flame data through a flame detector, collects comparison reference data through a reference infrared sensor, and collects illuminance data through an illuminance sensor; a discrete coefficient of the flame data is calculated, if the discrete coefficient is less than a first threshold, a fire alarm is not generated, if not, Fourier transform is carried out on the flame data, the comparison reference data and the illuminance data so solve an infrared correlation coefficient of the flame data and the comparison reference data after Fourier transform and a visible light correlation coefficient of the flame data and the illuminance data after Fourier transform; and if both the infrared correlation coefficient and the visible light correlation coefficient are less than a second threshold, a fire alarm is generated, and fire alarm information is sent through a wireless communication unit. According to the invention, algorithm flame identification is carried out on the flame data collected by two infrared channels and the illuminance data collected by a visible light channel, and the anti-interference capability is improved.

Description

technical field [0001] The invention relates to the field of fire detection, in particular to a flame identification method of a double infrared channel flame detector. Background technique [0002] Traditional forest fire prevention methods mainly include patrolling by forest rangers and camera monitoring. The shortcomings of forest rangers patrolling: one is that people have limited energy and cannot always monitor all fire prevention areas; the other is that people themselves are also an uncontrollable factor. There are also problems in camera monitoring: first, the power consumption is too large, and at the same time, data transmission must be taken into account, so only wired power supply can be used, which leads to restrictions on the installation location; second, in order to ensure the monitoring field of view, it must be installed at the highest point in the monitoring area. Early monitoring of surface fires and forest fires is difficult. With the rapid developmen...

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Problems solved by technology

Defects of forest rangers patrolling: First, people have limited energy and cannot monitor all fire prevention areas all the time; second, people themselves are also an uncontrollable factor

There are also problems in camera monitoring: first, the power consumption is too large, and at the same time, data transmission must be taken into account, so only wired power supply can be used, which leads to restrictions on the installation location; second, in order to ensure the monitoring field of view, it must be installed at the highest point in the monitoring area. It is difficult to monitor the early fire situation of surface fire and forest fire

[0003] The disadvantage of the infrared flame identification device in the prior art is that the reliability is poor, and it is easily disturbed by external environmental light sources such as surrounding lights, lightning, and sunlight. unnecessary trouble

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