COFIDECE ITERPRETATIO AD PREVETIO SYSTEM Erik Dovgan 1 , Božidara Cvetković 1 , Violeta Mirchevska 2 , Boštjan Kaluža 1 , Mitja Luštrek 1 , Matjaž Gams 1 1 Department of Intelligent Systems, Jožef Stefan Institute Jamova cesta 39, 1000 Ljubljana, Slovenia Tel: +386 1 4773393; fax: +386 1 4773131 2 Result d.o.o., Bravničarjeva 11, 1000 Ljubljana, Slovenia e/mail: erik.dovgan@ijs.si ABSTRACT This paper presents the interpretation and prevention system as a part of the product developed at the EU FP7 project Confidence. This system is able to detect falls and general disability. The tests show that it is reliable and ready for real/world usage. 1 ITRODUCTIO This paper presents the work at the work package 3 of the EU FP7 project Confidence [1]. The main objectives of this work package are the development of a subsystem that reconstructs the user’s body in the environment and the development of a subsystem that interprets the body posture within the environment producing an alarm when hazardous situations are detected. Both subsystems have to be integrated in the final system that must be able to gather user position and acceleration from a real/time position and acceleration systems and has to send alarm messages about the detected hazardous situations to an independent portable device. This device is used to communicate with the user and is able to decide whether a hospital or a specialized care/giving institution has to be noticed. The described system has already been developed. It uses the Ubisense, a real/time localization system [2], and an acceleration system developed at the Fraunhofer Society [3] in order to get the positions and accelerations of the user from dedicated body tags and sends the alarm messages to a simulated portable device. The next steps are the integration of the system with the systems of the other partners on the Confidence project and extensive tests. The system is presented in details in the following sections. 2 IMPLEMETED SYSTEM The presented system recognizes hazardous situations from user’s movement and reports them to the user/caregiver. In order to do that, several modules have been developed and integrated in the final system. In the following subsections we firstly present the architecture of the whole system. Secondly, we present each module/method that has been developed. Besides, we present the interface that was developed as an extension of the portable device, namely control panel, for the advanced users, system developers and for presentation purposes. 2.1 System architecture The system has been developed as a set of independent modules/threads. They are organized as a pipeline where a module gathers the data from the previous module(s), processes them and sends them to the next module(s) in the pipeline as shown in Figure 1. The main modules are the reconstruction modules (consisting of posture modules) and interpretation modules (consisting of interpretation and prevention modules). In addition, the communication modules were also implemented that communicate with a localization system and portable device, and that show the system status in details on the computer screen. The following subsection describes each of the modules in the pipeline. For each module we present its functionality, the previous modules from which it receives the inputs, and its outputs. Figure 1: System pipeline