Bi wave band infra red flame detector and its detecting method

Abstract

The present invention relates to a double-waveband infrared flame detector and its detection method. Said detector includes supporting frame, external shell, protective lens, filter, infrared sensor, amplification circuit, signal processing circuit, power supply conversion circuit, signal output circuit, internal and external shielding covers,detector interface plate and setting circuit. Said invention also provides its working principle and concrete steps of its detection method.

Description

technical field [0001] The invention belongs to the technical field of fire detection, in particular to a dual-band infrared flame detector and a detection method thereof. Background technique [0002] With the rapid development of my country's economic construction, the number of large space buildings and underground buildings is increasing, such as large public entertainment places, large warehouses, large bazaars, hangars, garages, oil depots, waiting halls and waiting halls, underground tunnels , subway station road, underground large parking lot and underground commercial street, etc. Because the interior of this type of building is often elevated and spanned, the smoke diffusion at the initial stage of the fire is greatly affected by the air-conditioning and ventilation systems installed inside the building. The fire spreads rapidly, the generated smoke is highly toxic, and it is difficult to evacuate and rescue people. Once a fire occurs, it often causes great economi...

AI Technical Summary

Problems solved by technology

[0004] In the early days, ordinary ultraviolet or single-band infrared flame detectors were used internationally as a means to protect the fire safety of large spaces and underground buildings. Poor, prone to false alarms

The ultraviolet / infrared flame detector is a composite detector, which is outstanding in the ability to suppress false alarms in fire alarms. The difference from the dual-band detector is that its two sensors are both used as fire sensors and must be detected at the same time. fire, which reduces the probability of fire detection

In recent years, some people at home and abroad have studied the use of CCD flame imaging technology to detect flames. Due to the lack of basic theoretical research on the corresponding early fire image detection, the development of fire image technology has been limited to a certain extent.

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