Figure 1. System for monitoring and fall detection.
In this application FreescaleTM ZSTAR wireless sensing triple axis board is used (Fig. 2). It is very practical because of low power consumption, portability, and the ability to be mounted in small pockets inside the clothes of patients. Board is divided into sensory and receiver part. The sensor is placed at the patient and is equipped with an accelerometer, microprocessor, and transceiver with the antenna which sends the measurement data to the receiver. The receiver also has a microprocessor that adjusts the signals received through the antenna to send with the USB protocol.
These data are sent to the server. The server collects, process and stores the data. Each sensor that is connected to the patient is personalized, and its data are stored in a file under person's name to get an overview of all activities and physical stress of the patient