Detection and characterization of head impacts

A non-transitory computer readable medium storing executable instructions executable by an associated processor to perform a method for determining an acceleration at a location of interest within one of a user's head and neck, comprising:

• receiving sensor data including one of linear acceleration data, angular acceleration data, angular velocity data, and orientation data, the sensor data being received using a sensor assembly substantially rigidly attached to an ambient-accessible surface of the user's head at a sensor position;
• calculating an acceleration at the location of interest using a time varying function based on the sensor data, the time-varying function representing the location of interest as a linear combination of the linear acceleration and a cross-product of the angular velocity with a relative velocity between the sensor position and the location of interest;
• and
• providing the acceleration to one of the user and an observer in a human-perceptible form.

A system for characterizing an impact to a user comprising:

• a sensor assembly configured to measure a linear acceleration and an angular velocity at a sensor position;
• a data transform component operatively connected to the sensor assembly and configured to represent a location of interest in one of the head and the neck of the user relative to the sensor position as a time-varying function and to calculate an acceleration at the location of interest as a linear combination of the linear acceleration and a cross-product of the angular velocity with a relative velocity between the sensor position and the location of interest;
• and
• a system interface configured to provide the calculated acceleration at the location of interest to a user in a human-perceptible form.

A system for characterizing an impact to a user comprising:

• a sensor assembly configured to measure motion data at a sensor position;
• a data transform component operatively connected to the sensor assembly and configured to represent a location of interest in one of the head and the neck of the user relative to the sensor position as a time-varying function and to calculate an acceleration at the location of interest as a linear combination of a linear acceleration at the sensor position and a cross-product of angular acceleration with a relative position between the sensor position and the location of interest;
• and
• a system interface configured to provide the calculated acceleration at the location of interest to a user in a human-perceptible form.