Refreshing alarm clock system

Proposed system can estimate human sleep states (Sleep stage, Sleep cycle), and awake user according to sleep phase, different from ordinary alarm clock.

Alarm clock system based on human information.

Advantage of this system

• Portable and low cost system.
• Optimization of Sleep phase based on human biological rhythm.
• Optimization of awake timing life cycle rhythm can change continuously
• Please more regard about your sleep condition in your bedroom!

Sleep Stage Estimation

Estimated sleep stage using pulse wave only

Sleep Cycle Estimation

System can estimate sleep cycle sleep cycle

Copyright (c) 2006 Fukuda Lab. Nagoya Univ. all rights reserved.