Intelligent bed elderly care system and method

The present invention relates to intelligent elderly care bed systems and methods. The system includes a pressure sensor array mounted in a mattress, a first wireless communication unit, a second wireless communication unit, a signal processor and a mobile terminal; said pressure sensor array comprises a plurality of piezoelectric transducers arranged in a matrix, each piezoelectric sensors connected in parallel via a signal line with the first wireless communication unit, each having a unique number information piezoelectric sensor; a signal processor for the last received pressure signal and the pressure signal is received at this time for comparison ; If matching, it is determined that the center of gravity has moved, if the matching, it is determined that no movement of the center of gravity; a second radio communication unit when there appears to move the center of gravity or the center of gravity in the N times T1 seconds without moving second duration T2, through the sending an alarm signal to the mobile terminal. The present invention can solve the problem can not be timely warning of abnormality when the old man sleep.