Synchronizing Accelerometer Data Received from Multiple Accelerometers and Dynamically Compensating for Accelerometer Orientation

摘要

Accelerometer data that is received from multiple accelerometers can be synchronized to identify a known movement. This synchronization occurs in real time as the accelerometer data is received from the multiple devices. The orientation of an accelerometer can be compensated for dynamically. By dynamically compensating for the orientation, the user can wear the accelerometers in various orientations without needing to calibrate a portable computing device to account for a particular orientation. Portable devices can have one or more detachable accelerometers. The accelerometers can be detached and placed at virtually any location of a user's body to allow for the detection of custom movements.

主权项

1. A method for synchronizing data received from multiple accelerometers, the method comprising:
receiving multiple streams of accelerometer data generated by multiple accelerometers worn by a user at multiple locations of the user's body while the user performs a first activity; accessing one or more timestamps in each of the multiple streams; based on the timestamps in each stream, extracting portions of each stream that have a common timestamp indicating that the accelerometer data in the extracted portions was generated during the same time period while the user is performing the first activity; and using the extracted portions of each stream that share a common timestamp to identify an entry in a database that represents the first activity, the entry including data representing accelerations that are generated at each of the multiple locations of the body when the first activity is performed.