Flammable and explosive gas dangerous scene maneuverably equipped detection device

Abstract

The invention provides a flammable and explosive gas dangerous scene maneuverably equipped detection device used for emitting pulse laser to a space region where to-be-measured gas is located; continuously measuring to obtain a non absorption characteristic spectral line returning light intensity and an absorption characteristic spectral line returning light intensity; acquiring basic parameters of atmospheric environment scattering returning light characteristics; utilizing compensating parameters for compensating the absorption characteristic spectral line returning light intensity; and according to the non absorption characteristic spectral line returning light intensity and the compensated absorption characteristic spectral line returning light intensity, acquiring characteristics of the to-be-measured gas, and thus obtaining geographic distribution data. The broad-spectrum laser is used as a light source, the measurement of environmental parameters is not required, the gas types and the gas concentration are measured according to the gas spectral absorption characteristics, returning light scattering characteristics and absorption characteristics are organically separated, measurement is accurate, and a discrete characteristic gas returning light measurement technology is adopted.

Description

technical field [0001] The present invention relates to gas parameter measurement equipment, in particular to an airborne detection device for inflammable and explosive gas hazard scenes. Background technique [0002] From the detection principle, the detection methods of gas concentration and type mainly include resistance gas sensor measurement method, ultrasonic technology measurement method, gas chromatography measurement method, carrier catalytic combustion method, tracer gas concentration attenuation method, optical interferometry method, spectrum measurement method, etc. Absorbed gas measurement method. [0003] 1) Resistive gas sensor measurement method: Utilizing the characteristic that the resistance value of the resistive gas sensor has a deterministic relationship with the surrounding gas concentration, the concentration of the gas to be measured can be obtained by measuring the resistance value of the gas sensor; [0004] 2) Ultrasonic technology measurement me...

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Problems solved by technology

[0015] 1) Existing measuring equipment needs the gas to be measured, and it is difficult to effectively measure gas parameters in inaccessible areas;

[0016] 2) The existing measurement equipment cannot describe the gas concentration, composition and distribution area within the free airspace;

[0017] 3) Existing measuring equipment needs to obtain more accurate air pressure, temperature and other environmental parameters, but inaccessible areas, these environmental parameters are difficult to obtain, resulting in large measurement errors

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