2results about How to "Excellent calculation speed" patented technology

This invention discloses a simplified calculation method for determining the length of anchorless sheet piles in bank protection reinforcement, belonging to the field of foundation pit support technology. The method includes the following steps: Step S1, performing pile length sensitivity analysis to examine the influence of the total sheet pile length L, soil cohesion c, and internal friction angle on the pile top displacement; Step S2, establishing a pile top displacement prediction formula based on the passive earth pressure coefficient theory and fitting multiple sets of working condition data; Step S3, establishing a simplified design process of "parameter determination - formula inversion - optimization verification," using the pile top displacement prediction formula to invert and solve for the optimized pile length based on soil parameters and the maximum pile top displacement, and comparing it with the minimum pile length that satisfies kick-toe stability to determine the final design pile length. This invention simplifies "trial calculation iteration" to "precise inversion," improving the design efficiency of anchorless sheet piles and achieving a balance between safety and economy by quantifying the influence of parameters.

The adaptive extension and background compensation based reflection ball light spot centroid positioning method of the present application comprises the following steps: S1, obtaining a gray scale image containing a reflection ball light spot; S2, using a fixed threshold segmentation method to binarize the gray scale image to obtain a binary image; S3, extracting the contour of an initial light spot region in the binary image and determining its minimum circumscribed rectangle as an initial ROI; S4, performing adaptive extension processing on each boundary of the initial ROI to obtain a target ROI; S5, based on the target ROI, using a background compensation centroid method to calculate the center coordinates of the reflection ball light spot. The method of the present application overcomes the limitations of traditional fixed threshold segmentation, significantly improves the stability and accuracy of light spot positioning under complex imaging conditions, and is close to the Gaussian fitting method in positioning accuracy, while being significantly superior to Gaussian fitting in calculation speed, maintaining the high efficiency comparable to the classical gray scale centroid method, and taking into account the excellent characteristics of high accuracy and high real-time performance.