This paper presents the design flow of an IoT human machine touchless interface. The device uses embedded computing in conjunction with the Leap Motion Controller to provide an accurate and intuitive touchless interface. Its main function is to augment current touchscreen devices in public spaces through a combination of computer vision technology, event driven programming, and machine learning. Especially following the COVID 19 pandemic, this technology is important for hygiene and sanitation purposes for public devices such as airports, food, and ATM kiosks where hundreds or even thousands of people may touch these devices in a single day. A prototype of the touchless interface was designed with a Leap Motion Controller housed on a Windows PC exchanging information with a Raspberry Pi microcontroller via internet connection.

翻译：本文提出了一种面向物联网的人机非接触式接口的设计流程。该设备采用嵌入式计算与Leap Motion控制器相结合，实现了精确且直观的非接触式交互。其主要功能是通过计算机视觉技术、事件驱动编程及机器学习方法，增强公共场所现有触屏设备的交互能力。尤其在新冠疫情之后，该技术对于机场、餐饮及ATM终端等日均接触人次可达数百甚至数千的公共设备的卫生防疫具有重要意义。非接触式接口原型系统采用基于Windows PC的Leap Motion控制器，通过互联网连接与树莓派微控制器进行数据交互。