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Concentration retrieval method based on laser telemetry technology for unmanned aerial vehicle inspection of gas leakage

A technology of gas leakage and telemetry technology, which is applied in the field of gas leakage UAV inspection and concentration retrieval based on laser telemetry technology

Active Publication Date: 2021-02-26
天津中科飞航技术有限公司
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Problems solved by technology

[0005] However, there is a problem in how to form an effective concentration retrieval mechanism for airborne long-distance and high-sensitivity laser methane telemetry technology

Method used

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  • Concentration retrieval method based on laser telemetry technology for unmanned aerial vehicle inspection of gas leakage
  • Concentration retrieval method based on laser telemetry technology for unmanned aerial vehicle inspection of gas leakage
  • Concentration retrieval method based on laser telemetry technology for unmanned aerial vehicle inspection of gas leakage

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Embodiment Construction

[0030] It should be noted that, in the case of no conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.

[0031] In describing the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", " The orientations or positional relationships indicated by "vertical", "horizontal", "top", "bottom", "inner" and "outer" are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and Simplified descriptions, rather than indicating or implying that the device or element referred to must have a particular orientation, be constructed and operate in a particular orientation, and thus should not be construed as limiting the invention. In addition, the terms "first", "second", etc. are used for descriptive purposes only, and should not be understood ...

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Abstract

The invention provides a laser remote sensing technology based gas leakage unmanned aerial vehicle inspection concentration inversion method which comprises the following steps that a path integral concentration sample is obtained through a laser methane sensor based on a scanning curve of an unmanned aerial vehicle; a lattice concentration inversion based on a gas pipeline coordinate system is obtained; maximum likelihood estimation of a gas leakage diffusion model based on a dot matrix concentration and a wind direction estimation is performed to obtain leakage position and leakage rate estimation values; the gas leakage diffusion model is used for reconstructing a continuous concentration map, and a dangerous zone and an isolation zone are divided according to a danger threshold value;and an intelligent emergency auxiliary decision analysis is performed by adopting a ground terminal or a handheld APP.

Description

technical field [0001] The invention belongs to the technical field of gas leakage inspection, and in particular relates to a gas leakage drone inspection concentration inversion method based on laser telemetry technology. Background technique [0002] With the continuous advancement of urbanization, gas, as a green and clean energy, has an increasing impact on human life, and the gas industry has also ushered in opportunities for rapid development. However, at the same time of development, hidden dangers and crises are gradually emerging, and the damage caused by the leakage of the gas pipeline network is large and the consequences are serious. According to statistics, the amount of leakage during transportation is about 10%, which not only causes direct economic losses, but also becomes a huge security threat. [0003] At present, gas companies mainly rely on manual daily inspections for pipeline maintenance. Staff are equipped with corresponding hand-held inspection equi...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F17D5/02F17D5/00G01N21/39
Inventor 范国梁陈治宇李会颖周玮
Owner 天津中科飞航技术有限公司
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