System Architecture

Overview The Multiplexed Telerehabilitation System in Virtual Reality extends our previous Telerehabilitation project allowing one therapist to simulataneously work with multiple patients. A graphical view of our vision can be seen below. The therapist, at the clinic, monitors using a web based interface one or more patients exercising at home. Using sensing gloves the system measures the patient's hand movements and evaluates them in real-time. The collected data is stored over the network at the clinic in an Oracle database. The data is also sent in real-time to a monitoring server at the clinic which makes the data available on the World Wide Web. A Java web portal allows the therapist to consult the patient's data during or after the rehabilitation session. Architecture The system is distributed over three sites: rehabilitation site, data storage site and data access site. Rehabilitation site Situated at patients home, contains the sensing gloves the workstation and the rehabilitation software To avoid problems due to slow modem connections, a local database can be installed to izolate the site from the network. Data is transferred to the data storage site either in real-time or periodically if working with the local database Data storage site Situated at the clinic contains the servers running the Oracle database and the web server Java servlets extract the data from the database and offer it on the web through the Apache web server and the Tomcat servlet container. A server application optimized for speed stores the latest data sets received from the rehabilitation site and makes them available to the monitoring applet. Data access site Any computer with Internet access can be a data access site Contains a Java portal that enables the therapist to see the data as graphs (JClass), numbers or real-time VR simulation (Java3D).