Self-cleaning device for monitoring camera lens of coal mine haulage roadway

Abstract

A self-cleaning device for a monitoring camera lens of a coal mine haulage roadway comprises a support, a water circulation module, an anti-explosion water pump, a universal metal water spraying pipe, an adjustable narrow-angle flat nozzle, a magnesium-aluminum alloy hose, a double-color spotlight, a water inlet pipe and a light-transmitting hydrophobic film, the front face of the adjustable narrow-angle fan-shaped nozzle sprays towards the lens, the double-color spotlight is close to an end cover, and projects in the radial direction of the lens, 532nm green laser and 635nm red laser which are fresh in the nature are adopted to assist dust imaging, the pollution degree of dust can be directly determined based on the color of pixel points, a complex algorithm to identify dust is avoided, a light-transmitting hydrophobic film is pasted in front of the lens, water flow can conveniently roll away the dust on the lens, water drop residue is less, the water circulation module is adopted to automatically complete spray washing and purification, so that the monitoring camera lens of the coal mine haulage roadway is automatically cleaned, and the video monitoring effectiveness in a high-dust environment is effectively guaranteed.

Description

technical field [0001] The invention relates to the technical field of coal mine video monitoring, in particular to a monitoring camera lens self-cleaning device suitable for coal mine transportation roadways. Background technique [0002] Video surveillance technology has been widely used in coal mine production because of its advantages of non-destructive, objective, accurate, comprehensive and timely. However, due to the special working conditions of continuous mining and transportation of coal in the narrow and long transportation roadway, the dust concentration in the coal mine transportation roadway is much higher than the maximum allowable dust concentration in general industrial places, so that the camera lens is easily covered by dust, resulting in the failure of video surveillance. Affect monitoring reliability and maintenance costs. [0003] For the dust-proof cleaning of the lens in a high-dust environment, the following methods are mainly used at present: First...

AI Technical Summary

Problems solved by technology

[0004] However, there are still deficiencies in the existing research: First, the research mainly focuses on the dust-proof cleaning mechanism, while there are few studies on the detection of lens dust pollution. Usually, the naked eye is used to directly observe the lens or analyze the client image to identify the lens dust.

Observing the degree of contamination of the lens with the naked eye is inefficient and belongs to qualitative analysis, which consumes manpower

Identifying lens dust through the client image requires a large distinction between the dust and the imaging background. However, the illumination in the shaft is low, and the client image lacks color information. The colors are mainly black, gray, and white. The lens dust in the image is related to the imaging background. The color of the background is similar, and there is no obvious texture or color difference, which leads to low reliability of dust recognition and makes it difficult to clean the lens on demand, thus increasing the cleaning cost

Second, the method of water circulation cleaning usually requires the laying of special water circulation pipelines, equipped with water supply, water purification and return water systems, and the deployment of video surveillance in transport lanes is large in number and widely distributed, and the method of laying special water circulation pipelines is expensive.

Third, the air curtain is used to isolate the lens from the dusty environment, and the blown air needs to be continuously purified, and then an air purification device needs to be equipped. However, when the environment is dusty, the air purification device will fail quickly, resulting in high maintenance costs.

Fourth, the electrostatic adsorption dust removal method is used, the device cost is too high, and due to the safety production needs of coal mines, the transportation roadway device needs to avoid static electricity, and this technology does not meet the conditions for use in the transportation roadway

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