Patent ID: 9468399
Filing Date: 2016-10-18
CPC Classification: A44B,A44D,A61B,H05K,Y10T

Claim Text:
1. A method of issuing an alert when a subject wearing an angle-sensing unit gets up from a bed or a chair, the method comprising: manually setting, in a microcontroller connected to an angle sensor in the angle-sensing unit, a first baseline value representing an initial angle measured by the angle sensor when the subject is sitting in a chair or reclined in a bed, wherein a caregiver manually sets the baseline value; sampling the angle sensor to determine a sampled value representing a sampled angle of the subject's body angle; determining a difference between the sampled value and the first baseline value to detect a change in the subject's body angle; wirelessly transmitting an alert if the difference between the sampled value and the first baseline value exceeds a threshold indicating that the subject has gotten up from the bed or out of the chair; and receiving the alert at a monitoring unit wirelessly.