We describe the design of a compact, wireless sensor module meant to capture expressive gestures in real-time when worn at the hands and feet of a dancer. Each sensor node includes a 6-axis inertial measurement unit (IMU) that contains three orthogonal gyroscopes and accelerometers in order to capture local dynamics, as well as a capacitive sensor to measure node-to-node proximity. The nodes are designed to be easily augmented with other digital or analog sensors. The onboard radio transceiver supports a power-efficient, high-speed RF network capable of real-time data acquisition from several devices simultaneously, thereby meeting the requirements of instrumenting a small dance ensemble for interactive applications. This paper describes the application goals, presents the prototype hardware design, introduces concepts for feature extraction, and shows early test results.
Ryan Aylward, S. Daniel Lovell, Joseph A. Paradiso