Abstract: A patient movement monitoring system for a bed mattress having a first side, a second side, a head end side and a foot end. The system includes a first sensing device coupled at the first side of the bed mattress, a second sensing device coupled at the second side of the bed mattress, and a third sensing device coupled at the head end side of the bed mattress. The sensing devices each include an accelerometer, gyroscope, and vibration sensor. The accelerometer detects an intensity of patient movement in the bed mattress. The gyroscope detects a change in the angle of the bed mattress. The vibration sensor detects vibration of the bed mattress. And a pressure sensing array is coupled at the underside of the bed mattress to detect changes in pressure of the bed mattress. A processing device is in electronic communication with the sensing devices and pressure sensing array and generates an alert if the sensors don't detect patient movement within a predetermined time period.