An optical fiber distributed multi-point online gas monitoring system and its host

一种光纤分布式、气体监测的技术，应用在颜色/光谱特性测量等方向，能够解决监测系统监测距离短、控制复杂等问题，达到性能稳定可靠、使用方便、便于现场安装的效果

Active Publication Date: 2017-07-07
GL TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] The purpose of the present invention is to provide an optical fiber distributed multi-point online gas monitoring system to solve the problems of short monitoring distance and complex control of the existing monitoring system, and at the same time provide a host of an optical fiber distributed multi-point online gas monitoring system

Method used

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  • An optical fiber distributed multi-point online gas monitoring system and its host
  • An optical fiber distributed multi-point online gas monitoring system and its host

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Embodiment Construction

[0021] The present invention will be further introduced below in conjunction with the accompanying drawings and specific embodiments.

[0022] Such as figure 1 Shown is the topological diagram of the optical fiber distributed multi-point online gas monitoring system of the present invention, the system includes a host and monitoring probes for distribution at each monitoring point, the host is set at a distance from each monitoring point, and is convenient for installation, The location for maintenance, and the corresponding gas sampling device (the gas sampling device in this embodiment is a sampling gas chamber) is arranged in the monitoring probe, and is distributed and installed in the place to be monitored, and the gas to be measured can freely enter and exit the sampling gas chamber; each sampling The air chamber is connected with the host by optical fiber.

[0023] Such as figure 2 Shown is a schematic structural diagram of an embodiment of an optical fiber distribut...

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Abstract

The invention discloses an optical fiber distributed multi-point online gas monitoring system and its host, including the host and monitoring probes distributed at each monitoring point. A laser is installed in the host, and the output end of the laser is connected to the input end of an input optical switch. The output end of the input optical switch is connected to each corresponding monitoring probe through the input optical fiber, and each monitoring probe is connected to the corresponding input end of the output optical switch provided in the host through the output optical fiber, and the output end of the output optical switch is connected to the infrared photodetector; The host is also provided with a control module for controlling the output optical switch and the input optical switch to strobe and set the corresponding optical path of the monitoring probe. The main engine of the present invention uses an optical switch to realize time-division multiplexing of laser light. Under the condition of the same power laser, the optical fiber sensor can be distributed farther; in addition, only a single infrared photoelectric sensor needs to be set after the output optical switch, which reduces the cost. .

Description

technical field [0001] The invention relates to an optical fiber distributed multi-point online gas monitoring system and a host computer thereof. Background technique [0002] Methane gas prevention and control is the top priority in the process of coal mine safety production. Traditionally, the method of pumping first and then mining is the guarantee strategy to prevent gas accidents and improve the safety of coal mine production operations. In addition, the extracted harmful gas can be used for power generation, which will bring great economic benefits to coal mines. [0003] However, during the gas extraction process, real-time online monitoring of the gas concentration is required. At present, many domestic mines have established methane concentration monitoring systems, which are basically branched tree network structures. The main station of the control center is set up in the coal mine, and multiple measurement and control sub-stations are set up underground. The ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N21/39
Inventor 陈军王凯李波詹放易王鹏飞
Owner GL TECH CO LTD
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