公开(公告)号：US12214418B2

公开(公告)日：2025-02-04

申请号：US18609361

申请日：2024-03-19

Applicant: Dalian University of Technology ,  NingBo Institute of Dalian University of Technology

Inventor： Bin Ya ,  Xingguo Zhang ,  Linggang Meng ,  Bingwen Zhou ,  Changzhi Shan ,  Yunfeng Liu

IPC: B22D11/114 ,  B22D11/00 ,  B22D11/045

Abstract: A device for improving quality of aluminum alloy horizontal continuous casting billet by applying ultrasonic treatment is provided, including an ultrasonic generator, an ultrasonic transducer, an amplitude transformer, a holding furnace, an ultrasonic probe and a traction device. The ultrasonic generator is electrically connected with the ultrasonic transducer; the ultrasonic transducer is threadedly connected with the ultrasonic probe through the amplitude transformer, and the ultrasonic probe is placed in the holding furnace; a communication opening is formed at a bottom of the holding furnace, and the traction device is installed at the communication opening; the holding furnace is further poured with metal liquid.

公开(公告)号：US11187538B2

公开(公告)日：2021-11-30

申请号：US16962759

申请日：2019-06-13

Applicant: DALIAN UNIVERSITY OF TECHNOLOGY

Inventor： Deyue Zou ,  Yunfeng Liu ,  Nan Zhao ,  Xin Liu

IPC: G01C21/20 ,  G01S5/16 ,  G06K9/00

Abstract: A method for judging rotating characteristics of light sources based on summation calculation in visible light indoor positioning is disclosed. The method is implemented based on an LED positioning system, and comprises the following steps: firstly, arranging the light sources into a convex pattern in order, and arranging the emitted sequence for each light source according to set conditions; secondly, fixing the position and attitude of a cell phone as a receiving end, continuously shooting with the cell phone camera to obtain a set of light source pictures, and performing image processing to obtain emitted sequences of the light sources; thirdly, performing sequence correlation operation on adjacent light sources to obtain emitted sequence delays, and performing summation calculation on the emitted sequence delays, to judge true and false light sources; and finally, excluding the false light source, and then completing positioning using a positioning algorithm.