Estimation of bed-ridden human's gross and slight movement based on pressure sensors distribution bed

In this paper, we developed a bed-ridden human's body movement unrestraint estimation system by using a pressure sensors distribution bed. We classified body movements into gross and slight movements. In order to estimate both gross and slight movements, we realized the distinction methods between a human and an object and between sitting and lying status. We also realized the estimation methods of a posture, an articular movement, the respiration and the pulse. By integrating these methods to complement each other, a bed-ridden human's body movement from gross to slight movements can be estimated totally.