System and method to recognize activities performed by an individual
A method implemented in a system which comprises a lightweight personal wearable monitoring device, supplied by a battery, comprising an accelerometer, a processing unit, a display, a remote server, said method comprising the steps: /a/ collecting, from a plurality of individuals caused to practice various physical activities from a set of predefined activities, acceleration data from sensing devices placed on each of said individuals, /b/ defining N small data-size specific metrics, computed from acceleration signals, which allow to define a global activity classifier, /c/ acquiring, at a first monitoring device worn by a first user, acceleration signals from the accelerometer of the first monitoring device, /d/ calculating, at the first monitoring device, over each lapsed time unit T 1 , specific metrics values from the sensed signals, to form a series of specific metrics values, /e/ send them to the processing unit, /f/ allocate an activity type for each time unit together with corresponding specific metrics values of the received series, to form a time chart of activity types presumably performed by the first user over a second period T 2, /g/ display the time chart of activity types presumably performed by the first user on the display and allow the first user to confirm or correct partly the type of activity performed over the second period, and allow correction by the first user.
1. An apparatus comprising:
at least one processor; and
at least one memory including computer program code, the at least one memory and computer program code configured to, with the at least one processor, cause the apparatus to:
acquire acceleration data from an accelerometer, wherein the acceleration data represents activity data from a user;
calculate one or more sets of metric values for a respective one or more time periods based at least on the acceleration data, wherein a set of metric values represents at least the acceleration data in a respective time period; and
provide the one or more sets of metric values to a processing unit;
wherein the processing unit is configured to classify the one or more sets of metric values to determine one or more physical activities.
2. The apparatus according to claim 1 , wherein the processing unit is separate from the apparatus.
3. The apparatus according to claim 1 , wherein the processing unit is configured to provide indication of the determined one or more physical activities.
4. The apparatus according to claim 3 , comprising a display configured to display the indication of the determined one or more physical activities.
5. The apparatus according to claim 1 , wherein each metric value has a different size.
6. The apparatus according to claim 1 , wherein at least one of the plurality of time periods have a duration between about 10 seconds and about 360 seconds.
7. The apparatus according to claim 1 , wherein at least two of the plurality of time periods have substantially the same duration.
8. The apparatus according to claim 1 , wherein the apparatus is configured to be worn by the user.
9. The apparatus according to claim 1 , wherein the apparatus comprises the processing unit, the processing unit configured to:
based on the one or more sets of metric values, for each set of metric values in a respective time period, determine a physical activity from among a set of activities.
10. The apparatus according to claim 9 , wherein the processing unit is configured to:
based on the respective determined one or more physical activities, generate a time chart of the one or more physical activities; and
display the time chart of the one or more physical activities on a display.
11. The apparatus according to claim 9 , wherein the processing unit is configured to provide a user interface control to enable entry of a confirmation or correction information at least in part for the determined one or more physical activities.
12. An apparatus comprising: at least one processor; and
at least one memory including computer program code, the at least one memory and computer program code configured to, with the at least one processor, cause the apparatus to:
acquire data from one or more sensors, wherein the data represents activity data from a user;
calculate one or more sets of metric values for a respective one or more time periods based on the activity data, wherein a set of metric values represents the activity data in a respective time period;
provide the one or more sets of metric values to a processing unit; and
display indication of one or more physical activities provided by the processing unit, wherein the one or more physical activities are based on the one or more sets of metric values.
13. The apparatus according to claim 12 , wherein the one or more sensors comprise at least one of:
an accelerometer to provide acceleration data;
a gyrometer to provide data represents one or more changes in orientation; and
a pressure sensor to provide data represents one or more changes in altitude.
14. The apparatus according to claim 12 , wherein the processing unit is separate from the apparatus.