Methane remote measuring instrument based on tunable laser

Abstract

The invention belongs to the technical field of methane concentration detection, and discloses a methane remote measuring instrument based on a tunable laser spectrum technology, which comprises a central processing unit (CPU), a tunable laser, an optical receiver, a signal processing circuit, a storage module, a wireless module and a display module, the signal output end of the optical receiver is connected with the CPU through the signal processing circuit. The storage module, the wireless module and the display module are all connected with the CPU. The signal processor is used for conditioning a signal received by the light receiver and then sending the conditioned signal to the CPU, and the CPU is used for calculating the methane concentration according to the signal sent by the signal processor, sending the concentration data to the storage module, sending the concentration data to the display module for display, and sending the concentration data to an upper computer through the wireless module. According to the invention, accurate detection of methane gas concentration can be realized.

Description

Technical field [0001] A methane telemeter based on a harmonic laser is a modhane concentration detector. Background technique [0002] With the increasing importance of mines, safety supervision, petroleum, and underground pipe network, gas pipeline safety and environmental protection, coal mine roadway, gas, deposit, petroleum pipeline gas inspection, gas detection is increasing It is important. Existing portable leak detects require probes in a gas-free environment, direct contact with gas, in actual site, often encountering pipelines or facilities, and can not even reach (such as coal mines underground roadway, hanging natural gas The case of pipeline, high-rise tube, long distance transmission pipe, unmanned room, etc.), which makes the leak inspection efficiency or gives up inspections in certain places, and bring hidden dangers to methane gas leakage. At present, there is currently the use of photovoltaic methane assays in most mine wells, and the photovoltaic methane assa...

AI Technical Summary

Problems solved by technology

Existing portable leak detectors require the probe to be placed in an environment with gas and to be in direct contact with the gas. In actual sites, pipelines or facilities are often difficult to reach, or even impossible to reach (such as corners of underground roadways in coal mines, suspended natural gas Pipelines, high-rise risers, long-distance transmission pipelines, unoccupied rooms, etc.), which makes the leakage inspection efficiency inefficient or abandons inspections in some places, which brings hidden dangers to the safety of methane gas leakage

At present, most mines use optical interferometric methane detectors to measure the corner gas concentration of roadways in underground mines. The optical interferometric methane detectors are placed in the environment of the gas to be measured. This measurement method is limited by geographical conditions. For high-altitude , Narrow areas cannot be measured accurately in time

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