Serial hydrogen and oxygen concentration and temperature and humidity simultaneous measurement system

A technology of oxygen concentration and measurement system, applied in the direction of measurement devices, instruments, etc., can solve problems such as explosion, achieve the effect of satisfying multi-function, simplifying the sensing circuit, and realizing long-distance measurement and control

Inactive Publication Date: 2018-11-16
BEIJING UNIV OF TECH
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Problems solved by technology

However, existing commercially available hydrogen sensors based on electrochemical principles still have the risk of explosion due to potential electric sparks

Method used

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  • Serial hydrogen and oxygen concentration and temperature and humidity simultaneous measurement system
  • Serial hydrogen and oxygen concentration and temperature and humidity simultaneous measurement system

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Embodiment Construction

[0021] Combine below figure 1 The present invention is described further:

[0022] The multi-parameter real-time remote automatic monitoring system consists of two parts. One is that the sensitive optical fiber senses the change of the external environment, and the other part is that the computer reads and judges the specific value of the detected parameter.

[0023] Such as figure 1 As shown, the system chooses broadband light source 1 to meet the spectral requirements for parameter measurement. The 3dB coupler 2 is used to connect the humidity spectrum detected by PCF7 and the spectra detected by the first LPFG3 and the second LPFG4 to the same transmission fiber, realizing the serial process of multi-parameter measurement. Temperature and humidity are measured by filling temperature-sensitive materials in PCF7 and coating humidity-sensitive films on the cross-section. The detection process of the sensitive wavelength is that light is emitted from BBS1 and transmitted to...

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Abstract

The present invention discloses a serial hydrogen and oxygen concentration and temperature and humidity simultaneous measurement system. The system comprises a broadband light source, a 3bB coupler, afirst LPFG, a second LPFG, a spectrum analyzer, a computer and a PCF. The system mainly solves the oneness and mutual cross sensitivity of different parameters of an optical fiber gas sensor when thegas physical parameters are measured and intelligence and automation of the monitoring work of the optical fiber gas sensor. In the experiment process, a sensitive optical fiber receives the change of outside parameters and can indirectly calculate the change of the parameters in the surrounding of the sensitive optical fiber from the change of the spectrum from a spectrograph so as to achieve the purpose of parameter measurement. Two gas measurement sensitive probes for the hydrogen and the oxygen and sensitive probes for measurement of the temperature and the humidity are respectively designed in the experiment so as to achieve the automatic, real-time and intelligent measurement of the parameters such as the hydrogen, the oxygen, the temperature and the humidity.

Description

technical field [0001] The invention relates to a system for realizing simultaneous measurement of multiple gases and multiple parameters, which belongs to the field of optoelectronics, laser and automatic measurement. Background technique [0002] With the increasing air pollution and the consumption of fossil fuels, the utilization of clean and renewable energy is a top priority for mankind. Hydrogen is an ideal future energy source, favored due to its recyclable and non-polluting properties. However, due to the small amount of hydrogen, it is easy to leak during production, storage, transportation and use, and hydrogen is colorless and odorless, with a wide range of explosion limits (4%-75%). It will explode when it encounters an open flame, which is harmful to people's lives and Property security poses a major threat. During the use of hydrogen, it is necessary to detect the hydrogen content in the environment and monitor its leakage to avoid hydrogen explosion acciden...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01D21/02
CPCG01D21/02
Inventor 王丽闫欢欢
Owner BEIJING UNIV OF TECH
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