Infrared gas alarm and gas concentration detection method

A technology for gas concentration detection and gas alarm, which is used in measurement devices, color/spectral property measurement, material analysis by optical means, etc., and can solve problems such as long use time and deviation of detection results

Active Publication Date: 2021-04-30
NINGBO SUNNY INFRARED TECH COMPANY
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003]The purpose of the present invention is to solve the above problems, provide an infrared gas alarm and a gas concentration detection method, and solve the problem of the existing infrared gas alarm The problem of deviation of detection results caused by too long

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  • Infrared gas alarm and gas concentration detection method
  • Infrared gas alarm and gas concentration detection method
  • Infrared gas alarm and gas concentration detection method

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Embodiment Construction

[0034] In order to more clearly describe the embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings that are used in the embodiments. Apparently, the drawings in the following description are only some embodiments of the present invention, and those skilled in the art can also obtain other drawings according to these drawings without creative efforts.

[0035] The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments, and the embodiments cannot be repeated here one by one, but the embodiments of the present invention are not therefore limited to the following embodiments.

[0036] The invention provides an infrared gas alarm, comprising a light source end 1 for outputting infrared light and a detection end 2 for receiving and detecting the infrared light emitted by the light source end.

[0037] According to one embodiment of the pre...

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Abstract

The invention relates to an infrared gas alarm and a gas concentration detection method. The infrared gas alarm comprises a light source end for outputting infrared light and a detection end for receiving and detecting the infrared light emitted by the light source end, and also comprises a turntable positioned between the light source end and the detection end; the turntable is provided with a test hole site and a plurality of correction hole sites, the test hole site comprises a test channel and a reference channel, and the test channel and the reference channel are respectively provided with optical filters corresponding to different wavelengths; and correction optical filters with equal wavelength intervals are sequentially arranged on the plurality of correction hole sites. According to the infrared gas alarm and the gas concentration detection method, the voltage-wavelength curve is obtained by fitting the output voltage of the detector corresponding to the plurality of correction hole sites, and the voltage is in direct proportion to the light intensity, so that the change of the light intensity of the test channel and the reference channel caused by spectral offset can correspond to the change of the output voltage; and a more accurate gas concentration value can be obtained after correction.

Description

technical field [0001] The invention belongs to the technical field of gas concentration detection, and in particular relates to an infrared gas alarm and a gas concentration detection method. Background technique [0002] With the improvement of people's safety awareness, gas has gradually been paid attention to by people as a source of danger, and various gas alarms have gradually entered people's lives. However, if the light source of the alarm is used for too long, its central wavelength will shift, resulting in a shift of the light source spectrum. At this time, the light intensity corresponding to the wavelength of the detection channel gas and the reference channel wavelength of the alarm will change, but the infrared gas alarm The sensor still calculates according to the original setting of the proportional coefficient, resulting in a deviation in the detection. Contents of the invention [0003] The purpose of the present invention is to solve the above problems,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/3504G01N21/27
CPCG01N21/3504G01N21/274
Inventor 王雪任陈惠广
Owner NINGBO SUNNY INFRARED TECH COMPANY
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