Computer vision for system protection of elevators

Abstract With rapid development of computer vision (CV), traditional elevator control and protection technology have begun to integrate with CV technology in order to improve safety of elevators. By introducing CV technology, the real-time state monitoring of elevator components is realized, the elevator door control system based on CV is proposed, and the abnormal behavior of passengers in the elevator car is identified and alarmed. Based on summarizing the basic principles of CV technology, this paper summarized the application of CV technology in elevator safety from two aspects: equipment safety and passenger safety. Finally, the future trends of CV-based system protection of elevators are discussed.</jats:p

Nonexistence of entire positive solution for a conformal kk-Hessian inequality

summary:In this paper, we study the nonexistence of entire positive solution for a conformal $k$-Hessian inequality in $\mathbb {R}^n$ via the method of proof by contradiction

Rapid prototyping and customizable multifunctional structures: 3D-printing technology promotes the rapid development of TENGs

This paper reviews the recent advances in triboelectric nanogenerators based on 3D printing technologies and highlights the crucial roles 3D printing technologies play in promoting the rapid development of TENGs.</p