Design of a breath detection system with multiple remotely enhanced hand-computer interaction devices

In this paper we propose a design using multiple remotely enhanced hand-computer interaction devices (REHCID) to design a real-time breathing detection system. Due to the restricted detection angle of our previously proposed system, unstable detection can be encountered when patients turn the body over. Our new REHCID placed on both sides of the bed allow the system to detect the patient's breathing regardless of his posture. Our design uses both an Infrared (IR) illuminator projected onto the patient's chest and an IR camera to detect the location of the IR LED. We then transport the IR location to the computer by means of Bluetooth. As the infrared rays are invisible, this design can still detect effectively in a dim environment, without at all influencing the quality of the patient's sleep.