Hall Effect Sensor-Based Linear Transducer

This paper presents a new type of transducer based on Hall effect sensors. This transducer is actually used at PERCRO as a small low cost, low displacement friction system for tracking hand position. A description of several displacement sensors as well as the Hall effect is reported. The mathematical model was tested by means of an experimental apparatus. The optimal parameters were determined on the apparatus and used for the realisation of a prototypal senso

Supporting interoperability and presence awareness in collaborative mixed reality environments

In the BEAMING project we have been extending the scope of collaborative mixed reality to include the representation of users in multiple modalities, including augmented reality, situated displays and robots. A single user (a visitor) uses a high-end virtual reality system (the transporter) to be virtually teleported to a real remote location (the destination). The visitor may be tracked in several ways including emotion and motion capture. We reconstruct the destination and the people within it (the locals). In achieving this scenario, BEAMING has integrated many heterogeneous systems. In this paper, we describe the design and key implementation choices in the Beaming Scene Service (BSS), which allows the various processes to coordinate their behaviour. The core of the system is a light-weight shared object repository that allows loose coupling between processes with very different requirements (e.g. embedded control systems through to mobile apps). The system was also extended to support the notion of presence awareness. We demonstrate two complex applications built with the BSS