Activity Recognition Using Accelerometer Data

A device for recognizing activity of an object, the device comprising:

• a housing configured to be attached to the object;
• a processing unit disposed in the housing comprising a processor and a movement sensor;
• wherein the movement sensor measures a signal related to movement of the object during a time window;
• wherein the processor assigns at least one preliminary activity label and confidence indicator to the time window based on at least one numerical descriptor computed from the measured signal;
• wherein the processor determines whether to perform additional analysis dependent upon at least the confidence indicator;
• and
• wherein the processor assigns a final activity label to the time window.

A method of recognizing activity of an object, the method comprising:

• measuring, with a movement sensor attached to the object, a signal related to movement of the object during a time window;
• assigning, with a processor, at least one preliminary activity label to the time window based on at least one numerical descriptor computed from the measured signal;
• determining whether to perform additional analysis dependent upon at least the preliminary activity label;
• and
• assigning a final activity label to the time window.

A method of recognizing activity of an object, the method comprising:

• measuring, with a movement sensor attached to the object, a signal related to movement of the object during a time window;
• assigning, with a processor, at least one preliminary activity label to the time window based on at least one numerical descriptor computed from the measured signal;
• determining whether to perform additional analysis dependent upon at least the preliminary activity label;
• and
• assigning a final activity label to the time window.

A device for recognizing activity of an object, the device comprising:

• a housing configured to be attached to the object;
• a processing unit disposed in the housing comprising a communication unit and a movement sensor;
• wherein the movement sensor measures a signal related to movement of the object during a time window;
• wherein the communication unit communicates the signal to an exterior processor;
• wherein the exterior processor assigns at least one preliminary activity label to the time window based on at least one numerical descriptor computed from the measured signal;
• wherein the exterior processor determines whether to perform additional analysis dependent upon at least the preliminary activity label;
• and
• and wherein the exterior processor assigns a final activity label to the time window.

A device for recognizing activity of an object, the device comprising:

• a housing configured to be attached to the object;
• a processing unit disposed in the housing comprising a communication unit and a movement sensor;
• wherein the movement sensor measures a signal related to movement of the object during a time window;
• wherein the communication unit communicates the signal to an exterior processor;
• wherein the exterior processor assigns at least one preliminary activity label and confidence indicator to the time window based on at least one numerical descriptor computed from the measured signal;
• wherein the exterior processor determines whether to perform additional analysis dependent upon at least the confidence indicator;
• and
• wherein the exterior processor assigns a final activity label to the time window.