A Review of Safety Methods for Human-robot Collaboration and a Proposed Novel Approach Topics: Computer-Based Manufacturing Technologies; Engineering Applications on Intelligent Control Systems and Optimization; Guidance, Navigation and Control; Human-Robots Interfaces; Industrial Internet of Things; Mechatronics Systems; Perception and Awareness In Proceedings of the 16th International Conference on Informatics in Control, Automation and Robotics - Volume 1: ICINCO, 243-248, 2019 , Prague, Czech Republic