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Sediment particle analysis device and analysis method based on digital image technology

A technology of sediment particles and digital images, applied in the field of powder testing, can solve the problems of low accuracy, poor repeatability, slow speed, etc., and achieve the effect of rapid measurement

Inactive Publication Date: 2011-12-21
HOHAI UNIV
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Problems solved by technology

Traditional particle detection methods have shortcomings such as low accuracy, poor repeatability, and slow speed

Method used

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  • Sediment particle analysis device and analysis method based on digital image technology
  • Sediment particle analysis device and analysis method based on digital image technology
  • Sediment particle analysis device and analysis method based on digital image technology

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Experimental program
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Embodiment

[0041] The shell part of the collection box is made of plexiglass, 36cm long, 32cm wide, and 30cm high. There is a 1cm slot on the lower right side, where the sediment sample tray is put into the shooting area; the light source is two 10W fluorescent lamps, The length is 36cm, distributed in parallel on both sides. After repeated adjustments, the light source is placed at a distance of 18cm from the bottom of the device. This position can ensure that the particle image has no shadow and the shooting effect is better. The camera is a PENTAX CCD digital camera, which is fixed by a side plate fixed in the middle of the device. There are 5 small holes drilled on the side plate with an interval of 2 cm to realize the up and down movement and fixation of the camera. The length of the light tube used in this device is long, covers the shooting area, and is distributed in parallel on both sides, which solves the phenomenon of uneven illumination to a certain extent.

[0042] The sedim...

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Abstract

The invention discloses a sediment particle analysis device based on digital image technology, which includes a collection box, an image acquisition unit, and a sediment particle analysis system; wherein the image collection unit is arranged in the collection box for collecting sediment samples. Image; the sediment particle analysis system includes an input module, an image preprocessing module, an image binarization module, an edge detection and contour extraction module, and a statistical output module. The invention also discloses a sediment particle analysis method based on digital image technology. The image of the sediment particle sample is collected by a camera, and then the image is preprocessed, binarized, and edge contour is extracted, and the projected area of ​​each particle is calculated. According to the equivalent projected area, the particle size of each particle is obtained, and then a series of particle information is obtained, which realizes the rapid measurement of the characteristic parameters of sediment particles.

Description

technical field [0001] The invention relates to a sediment particle analysis device and analysis method based on digital image technology, belonging to the technical field of powder testing. Background technique [0002] Water level, flow, and sediment are the three basic elements of hydrological measurement. At present, the test of water level and flow has achieved certain results through the introduction of new equipment, but the test of river sediment particles still uses traditional methods. With the rapid development of social economy, the task of river sediment control and development is becoming more and more heavy, and the requirements for hydrological work are also getting higher and higher. Whether it is flood control, unified management of water resources, or the construction of the ecological environment, rapid, accurate, and timely hydrological information is required, especially for sediment particle analysis. The traditional sediment particle gradation meas...

Claims

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Application Information

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IPC IPC(8): G01N15/00G01N15/02
Inventor 唐洪武刘云肖洋唐立模
Owner HOHAI UNIV
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