Wuhan University

Lin Jiang

Liang Zhou

Wei Xie

Hui Zhao

Han Wang

Jianpeng Zuo

Tixian Tian

Jianyang Zhu

Xumin Gao

Lisheng Ren

Dongjun Fang

Wenkang Nie

Zhipeng Yu

Chao Xiang

Xiaoyue Pan

Zhao Wang

Shengxi Jin

A method of constructing an indoor wall corner two-dimensional semantic map based on a robot platform includes controlling, by the master control computer, the robot platform to move indoors, collecting, by the lidar sensor, a distance between an indoor object and the robot platform and a direction angle between the indoor object and the robot platform in real time and transmitting the distance and the direction angle to the master control computer, and obtaining, by the master control computer, an environment grid map and a real-time pose of the robot platform by processing the distance between the indoor object and the robot platform and the direction angle between the indoor object and the robot platform based on Gmapping algorithm; constructing a semantic segmentation data set as a training set on the master control computer and obtaining a predicted non-wall corner semantic label.

Method of constructing indoor two-dimensional semantic map with wall corner as critical feature based on robot platform

A rotary joint, including: a hydraulic follow-up mechanism and a rotary transmission mechanism. The hydraulic follow-up mechanism includes a cylinder body, a valve sleeve, a valve core, a valve body, a left end cover and a right end cover. The rotary transmission mechanism includes a tray, a stabilizing ring, a follow-up disk, a torque transfer disk and a stable supporting wheel mechanism. The left end cover and the right end cover are arranged at the left and right ends of the cylinder body, respectively. The valve body is concentrically mounted in a cylindrical hollow chamber of the cylinder body. The output shaft at the right end of the valve body projects out of the right end cover. The right end of the valve core is provided with a valve core torque transfer shaft extending rightwards through the right end of the valve body.

Passive follow-up hydraulic rotary joint

Growing community of inventors

Wuhan, China

Lin Jiang