Mobility

Human Body Posture Tracking Using Flexible, Wireless and Low-Power Sensor Nodes

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Executive Summary

Human posture tracking is performed using several sensor nodes attached to a subject's body. A Kalman filter estimates the orientation of each of the nodes from the outputs of the sensors. This orientation is then mapped to the appropriate bodypart allowing full body posture reconstruction. The design of flexible, wireless and low-power sensor nodes for orientation tracking purposes is presented. Hardware components are chosen based on size and power consumption and software is written to implement a TDMA-like protocol allowing 10 nodes to send 100 samples per second to a base station receiver.

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