A multi-gas parallel trace detection fire hazard early warning device and method

Abstract

The invention belongs to the technical field of gas analysis and detection, particularly relates to fire hazard early warning, and more particularly relates to a multi-gas parallel trace detection fire hazard early warning device. According to a technical scheme, a gas chamber, a power source module and an electronic processing module are mounted in a heat insulating bin, an exciting light module is mounted near a gas inlet of the gas chamber, an optical sensing module is mounted near a gas outlet of the gas chamber, a gas feeding pump is driven by the electronic processing module to feed environment gases into the gas chamber, a part of exciting light energy corresponding to gas absorption wavebands is absorbed by the gases in the gas chamber, the absorption is reflected in a response voltage of infrared sensors of the optical sensing module, and the concentrations of corresponding gases are acquired by calculation by the electronic processing module. The device can achieve fire hazard early warning through trace gas detection, and can play a role of fire hazard early warning for a large-scale electronic device machine room. Compared with the prior art, the device provides long-time calibration means based on assistant light and calibration light, a detection error is corrected by combination of multiple light sources and a detector, and the detection error is further reduced through phase sensitive detection.

Description

technical field [0001] The invention belongs to the technical field of gas analysis and detection, in particular to fire early warning. Background technique [0002] As people have more and more needs for information services, there are more and more places with dense electronic equipment. From fixed server rooms to cloud service centers to mobile electronic equipment vehicles and ships, a large number of electronic equipment are gathered. A fire in such a densely populated facility would result in enormous property damage, requiring a large number of reliable fire detection devices. The fire occurrence process can be roughly divided into several processes, such as the release of trace gas, the sharp rise in temperature and the generation of flames, the generation of smoke, and the spread of fire. The current fire detection method only covers the follow-up process of trace gas release, and adopts smoke detection and temperature detection methods in the method: the smoke de...

AI Technical Summary

Problems solved by technology

The current fire detection method only covers the follow-up process of trace gas release, and adopts smoke detection and temperature detection methods in the method: the smoke detection method determines that the fire has already occurred when this type of equipment alarms, and it can only achieve the alarm function but not the early warning. Effect: Although the temperature detection method can play a preventive role to a certain extent, the wiring of the single-point temperature detection method is difficult, and the imaging temperature detection method is expensive

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