Long-corridor toxic gas alarm device with wide absorption spectrum

Abstract

The invention discloses a long-corridor toxic gas alarm device with wide absorption spectrum, which comprises a transmitting device, a receiving and analyzing device and a plurality of reflecting mirror devices. Initial spectra output by the transmitting device are input into the receiving and analyzing device through wide-spectrum long optical fibers, and the transmitting device and the receiving and analyzing device are respectively arranged at the two ends of an alert area; a wide-spectrum double-spectral absorption spectrum test is adopted so as to realize one-time detection alarm for various toxic gases, and the wide-spectrum long optical fibers are used for transporting the initial spectra so that the transmitting device and the receiving and analyzing device are respectively arranged at the two ends of the alert area; the reflecting mirror devices change the directions of beams to be adapted to the alert of areas in various shapes, and a differential spectrum method is used forremoving other interference and improving the comparison accuracy of absorption spectra. The long-corridor toxic gas alarm device with wide absorption spectrum has the advantage of unique and novel design, and is suitable for alert and toxic gas alarm in various occasions.

Description

technical field [0001] The invention relates to a poisonous gas alarm, in particular to a poisonous gas alarm with wide absorption spectrum for long corridors that belong to the field of material analysis and security technology and are suitable for poisonous gas and fire security alarms around or in the middle of public places. Background technique [0002] Human beings have been working hard to perceive and prevent poisonous gas for a long time, and technically used biological detection and instrument detection to perceive and prevent poisonous gas; now, with the development of modern sensor technology, it is possible to detect poisonous gas quickly and conveniently. [0003] Existing sensors for detecting poisonous gas are gas sensing sensors made of polymer conductors or metal oxide semiconductor materials. This type of gas sensing sensor will change with the contact gas due to the resistivity of polymer conductors or metal oxide semiconductor materials. The concentratio...

AI Technical Summary

Problems solved by technology

[0004] The other is high-sensitivity qualitative analysis of gases using ion mobility spectrometry, gas chromatography, and fluorescence burst technology of sensitive substances. A small number of devices can be used, and it is difficult to meet the requirements of large-scale real-time detection

[0005] There is another type of differential spectral analysis equipment used in the analysis of air pollution components and levels. It is mainly composed of a transmitting and receiving differential spectral analyzer and a mirror, which can analyze SO in the air. 2 , CO 2 , O 3 and other gases, but at present, it is not possible to detect various poisonous gases with a wide spectrum, nor can this set of equipment be used around warning areas such as corridors to detect and prevent poisonous gases

Images