Method and device for measuring algae growth degree on silicone rubber surface based on image processing

Abstract

An image processing-based method and device for measuring the growth degree of algae on a silicone rubber surface. The method comprises the following steps: S1, measuring the average value of a G component corresponding to photographs in different algae densities, and establishing a function relationship between the algae densities and the average value of the G component; and S2, photographing silicone rubber on which the algae grow, so as to obtain the average value of the G component of an algae region in the photographs, and calculating the algae density according to the function relationship. In the method, the step of taking the algae from the surface of an insulator is avoided, thereby avoiding a huge error during the algae taking process. In the method, photographing is only needed during on-site operations, and the method is simple and is free of safety hidden risks, adapts different environments, and satisfies demands on safety and power supply reliability in power generation. By means of the white balance processing method, differences on color of the photographs due to weather, illumination and other factors are reduced as more as possible, thereby avoiding the error in the measured growth degree of algae.

Description

【Technical field】 [0001] The invention relates to high voltage and insulation technology, in particular to a method and device for measuring the growth degree of algae on the surface of silicon rubber based on image processing. 【Background technique】 [0002] Composite insulating materials play a very important role in the field of high voltage external insulation because of their outstanding hydrophobic properties. In high-voltage transmission lines, composite insulators made of composite insulating materials are very common. Its function is to suspend wires to ensure reliable insulation between high-potential wires and ground potential towers; in substations, the surface of post insulators is also widely sprayed with room temperature Vulcanized silicone rubber compound. [0003] The surface of the composite insulating material is a hydrophobic surface, which significantly increases the pollution flashover voltage and improves the reliability of the insulator. However, in...

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Problems solved by technology

The advantage of this method is intuitive, but the disadvantage is that the algae on the surface of the insulator has a strong adhesion, and it is difficult to wash the algae on the surface of the silicone rubber with water, and the residual algae on the washing medium (such as gauze) is not easy to dissolve. into the water, causing a large error; and the method of scraping with a knife is likely to damage the surface of the silicone rubber

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