2results about How to "High transplantability" patented technology

The application relates to the technical field of welding automation, and provides a corrugated plate welding seam extraction method and system which are self-adaptive and anti-deformation, the method comprising the following steps: acquiring a three-dimensional point cloud of a corrugated plate surface; segmenting two adjacent geometric surfaces to be welded; selecting a reference surface and a projection surface; calculating the normal distance of each point of the projection surface to the reference surface, screening effective projection points reflecting the real welding seam boundary based on a set threshold value; projecting the effective projection points to the reference surface and performing fitting to obtain a welding seam track. The application automatically excludes local deformation interference through a threshold screening mechanism, directly extracts the welding seam from the real point cloud with high precision, and overcomes the defect that the prior art relies on an ideal geometric model and causes a large error.

This utility model relates to the technical field of bacterial culture preparation devices, and in particular to a bacterial culture preparation device, comprising: a first filter having a first filter membrane, the first filter input end being connected to a first supply pump; a second filter having a second filter membrane, the second filter input end being connected to the first filter output end; and a third filter having a third filter membrane, the second filter input end being connected to the second filter output end; wherein the diameter of the pores on the first filter membrane is larger than the diameter of the pores on the second filter membrane, and the diameter of the pores on the second filter membrane is larger than the diameter of the pores on the third filter membrane. This utility model is beneficial for removing impurities from bacterial culture samples and enriching the bacterial culture.