Mining project visual identification needs: 1, belt scales on the conveyor belt crushed materials on the vertical diameter identification, 2, the need to monitor the aggregate beyond 50mm 3, aggregate (circled in yellow, look at the picture) the size of the need to identify the

1, the installation height of 1.5 m, belt speed 1.6 m / s, lateral material width of 800 mm 2, the conveyor belt on the broken material in the 30 mm or so is normal 3, before the scene with the Haikang solution, is not very satisfied with the need to improve the accuracy, the customer accepts a combination of hardware and software solutions, the need to replace the site to install hardware 4, only detect the surface (if the large surface is pressed underneath)

Detection programme

The distance between the object and the camera rack material is shown in the figure.

Light source

Camera

Camera plus lens plus cable head total length 150mm

Light source

200 mm

The lower end of the camera is 200mm away from the product, the field of view at this height is 230*192 so for an 800 conveyor belt, 4 cameras are needed to cover it.

Stones are detected and rendered to give the length and width of each stone and to determine the length and width

Risk assessment:

1. The site is too dusty, customers need to make their own dust cover, too much dust needs to be cleaned up regularly, the need does not affect the camera receiving light

2. Pre-provided speed of 1.6m / s, not greater than this speed operation

3. Confirmation of the height of the setup is feasible

4. Only detect the photographed stone, if it is pressed at the bottom, it will not be detected.

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