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Transmission line fire smoke identification method based on meteorological environment

A technology for meteorological environment and power transmission lines, which is applied in the direction of fire alarms, fire alarms, character and pattern recognition relying on the effect of smoke/gas. fire and other problems, to achieve the effect of reducing the probability of misjudgment, improving the accuracy of wildfire monitoring, and reducing wildfire tripping

Active Publication Date: 2016-12-14
STATE GRID HUNAN ELECTRIC POWER +2
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Problems solved by technology

However, in the monitoring of mountain fires on transmission lines, it is difficult to detect mountain fires in the early stage through infrared monitoring alone, and it is easy to fail to identify mountain fires because the flames are blocked.
In the prior art, smoke-based video surveillance is of great significance for early detection of fires, but at present, smoke-based mountain fire recognition is interfered by atmospheric clouds, tree swaying and other factors, and the false alarm rate is high

Method used

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  • Transmission line fire smoke identification method based on meteorological environment
  • Transmission line fire smoke identification method based on meteorological environment
  • Transmission line fire smoke identification method based on meteorological environment

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Embodiment Construction

[0042] Attached below figure 1 The present invention is described in further detail.

[0043] The present invention is a method for identifying mountain fire smoke on transmission lines combined with meteorological environment, and the specific implementation steps are as follows:

[0044] Step 1: Obtain sample frames of video surveillance images, and use adaptive wavelet filtering to denoise the acquired images.

[0045] Extraction is performed at a sampling frequency of one frame every 0.5s, and image feature extraction is performed every 3s, that is, 6 frames of images are extracted for analysis each time.

[0046] By selecting different thresholds on different scales, the wavelet coefficients smaller than the threshold are set to zero, and the wavelet coefficients larger than the threshold are retained, so that the noise in the signal is effectively suppressed, and finally through wavelet inverse transformation, the filtered reconstruction signal.

[0047] Step 2: Use t...

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Abstract

The invention discloses a transmission line fire smoke identification method based on the meteorological environment, comprising the following steps: (1) acquiring a video monitoring image sampling frame, and carrying out image de-noising preprocessing; (2) extracting the features of a smoke motion area; (3) acquiring the speed and direction features of the motion area; and (4) identifying the shape of fire smoke. According to the method, first, the moving speed and moving direction of an inter-frame image in a sequence image are extracted accurately, and then, the motion of fire smoke is judged according to the early smoke moving features of fire and the tower meteorological environment parameters, so that the influence of birds, vehicles, pedestrians, forest areas and other factors is eliminated properly, and the misjudgment rate of transmission line fire alarm is reduced effectively. As an auxiliary tool of a transmission line fire monitoring system, the method is of great significance to improving the accuracy of fire monitoring and reducing fire tripping.

Description

technical field [0001] The invention belongs to the technical field of electric power engineering, and in particular relates to a method for identifying mountain fire smoke on a power transmission line in combination with a meteorological environment. Background technique [0002] The occurrence of mountain fires on transmission lines is mainly due to the fires of combustible materials (including: trees, thatch, structures, flammable and explosive materials, etc.) under the lines and in the protection areas, which cause damage or failure to the lines. The main forms are mountain fires, house fires, accumulations (coal, wood, plastic, etc.) fires, etc. The current mountain fire monitoring methods on power transmission lines are mainly based on infrared monitoring technology. For example, satellite-based infrared monitoring, ground infrared monitoring, airborne infrared forest fire monitoring and microwave radiation monitoring devices have been developed, and certain achieveme...

Claims

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Application Information

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IPC IPC(8): G06K9/00G06K9/40G06T7/00G06T7/60G08B17/00G08B17/10
CPCG06T7/60G08B17/005G08B17/10G06T2207/10016G06T2207/20224G06T2207/30232G06V20/47G06V20/52G06V10/30
Inventor 陆佳政章国勇李波熊蔚立方针罗晶
Owner STATE GRID HUNAN ELECTRIC POWER
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