Three-component fire gas detector

A gas detector, three-component technology, applied in instruments, measuring devices, scientific instruments, etc., can solve problems such as poor reliability, achieve the effects of improving accuracy, eliminating light source instability, and overcoming mutual interference and influence

Inactive Publication Date: 2010-11-24
HEFEI KDLIAN SAFETY TECHNOLOGY CO LTD
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  • Abstract
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  • Application Information

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Problems solved by technology

[0003] The purpose of the present invention is to provide a three-component fire gas detector to solve the problem of poor reliability

Method used

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  • Three-component fire gas detector
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  • Three-component fire gas detector

Examples

Experimental program
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Embodiment Construction

[0025] Such as figure 1 , figure 2 , image 3 and Figure 4 As shown, the three-component fire gas detection system in this embodiment includes an infrared light source 1, a modulation wheel 2, a filter wheel 3, a stepping motor, a gas absorption pool 4, a vacuum pump, a gas collection chamber, a main air pump, an infrared detector, It is composed of a preamplifier circuit, a filter amplifier circuit, an AD conversion circuit, a DSP controller, and a liquid crystal display.

[0026] The working mode of the system is: when the system is placed and works stably, the gas to be measured is sucked in from the air inlet by the air pump, filtered through the dry filter device to remove dust and moisture, and then flows into the gas measurement chamber, and is analyzed and processed by the gas measurement chamber Finally, it is discharged into the atmosphere from the outlet of the air pump; the optical path of the gas measurement chamber is composed of 4 paths, the first path is t...

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Abstract

The invention discloses a three-component fire gas detector which can accurately detect the concentrations of three gas components of CO, CO2 and CH4 in a fire combustion product, and proposes a fire identification method. The three-component fire gas detector is composed of a gas absorption cell, a signal processing control module and a communication module. In the invention, gas in a protected space is extracted to the gas absorption cell; when an infrared beam in the gas absorption cell passes through a specific gas, infrared light with a specific frequency is absorbed by the specific gas; and the infrared light with specific wavelength in the infrared beam changes, which indicates that the specific gas to be detected exists in the gas, and the gas detector responds immediately to convert the variable quantity and the infrared frequency of the infrared light into an electrical signal, and finally the electrical signal is subjected to signal processing to obtain gas concentrations and types in the detector. The gas detector displays the gas concentration on an upper computer through the communication module.

Description

technical field [0001] The invention relates to the field of fire fighting equipment, in particular to a three-component fire gas detector. Background technique [0002] The fire has gone through four stages from brewing, occurrence to extinguishment, smoldering, initial stage, development and extinguishment. Ordinary fire detectors can only detect fires in the early stage of fire or even in the development stage, which often loses the best time for fire extinguishing, increasing losses caused by fires to humans. Moreover, the previous fire detectors mainly rely on monitoring a single physical parameter in the fire environment. Only by monitoring one physical parameter can not carry out accurate early detection and alarm of fire, which greatly reduces the reliability of fire detectors. Contents of the invention [0003] The purpose of the present invention is to provide a three-component fire gas detector to solve the problem of poor reliability caused by traditional fire...

Claims

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Application Information

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IPC IPC(8): G01N21/35G01N21/01G01N21/3504
Inventor 刘炳海吴龙标赵建华王文伟任士俊许玉坤李守红
Owner HEFEI KDLIAN SAFETY TECHNOLOGY CO LTD
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