Digital imaging acquisition system for aggregate grading detection and acquisition method thereof

Abstract

The invention discloses a digital imaging acquisition system for aggregate grading detection. The system consists of an aggregate sampling device, an image acquiring device, an optical processing optimizer and communication and storage equipment, wherein the aggregate sampling device comprises a material dividing plate, a distance adjusting rod and an angle adjusting rod; the image acquiring device comprises an infrared laser, a linear array camera and an image acquiring card; the optical processing optimizer comprises a filter device and a diffuse coating layer; and the communication and storage equipment comprises a data line and a computer. A digital imaging acquisition method for aggregate grading detection comprises the following steps of: setting the aggregate sampling device; setting the image acquiring device; setting the communication and storage equipment; acquiring an image of a sampled aggregate; and transmitting and storing the image. An aggregate stream is sampled and acquired by arranging the material dividing plate, so the problem that the image of a falling stream of the aggregate must be completely acquired is solved and the defects of poor quality of the acquired image, difficult separation of particles and a large amount of processing data are overcome.

Description

technical field [0001] The invention is an innovative method for the real-time detection technology of the asphalt mixture production process, and specifically relates to a digital imaging acquisition system and its acquisition method for aggregate gradation sampling, which applies digital image processing and image recognition technology to road construction Real-time sampling at the production site of asphalt mixture in China. Background technique [0002] At present, highway pavement is dominated by asphalt pavement. In the composition of asphalt pavement materials, the amount of aggregate is the largest, and the cost is also the largest. In the production site of asphalt mixture, the grading of aggregates is only unilaterally controlled from the mixing plant to control the feeding volume of each cold material silo, and there is no real-time detection of aggregate grading. This will often lead to a large deviation between the actual production gradation and the design g...

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Problems solved by technology

[0008] Aiming at the defects or deficiencies in the above-mentioned prior art, the present invention provides a digital imaging acquisition system and its acquisition method for aggregate gradation detection. , the need to collect image data of all aggregates, the inability to adapt to the characteristics of multi-level aggregate detection, and the difficulty of obtaining high-quality, easy-to-handle digital images in the aggregate grading link of the asphalt mixture production site

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