TIME OUT-OF-HOME MONITORING
First Claim
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1. A computer-implemented method for determining time a subject spends outside of their home, comprising:
- receiving sensor firing data for a duration from sensors in the home, the sensors comprising an exterior door sensor and room motion sensors;
dividing the duration into epochs;
for each epoch, extracting features from the sensor firing data received during the epoch, wherein extracting features from the sensor firing data received during the epoch comprises;
calculating a number of sensor firings during the epoch;
detecting whether the subject was in or out of a bed during the epoch based on sensor firing data from room motion sensors;
in response to the exterior door sensor being the last sensor fired during the epoch, indicating a leaving event during the epoch;
in response to the exterior door sensor being the first sensor fired during the epoch, indicating an arrival event during the epoch;
identifying whether or not the last motion sensor fired during the epoch occurred in a room of the home from which the subject could directly leave the home; and
classifying, using a classifier, each epoch as out-of-home or in-home based on the features extracted from the sensor firing data during the epoch.
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Abstract
Systems and methods for determining time a subject spends outside of their home based on signals received from unobtrusive sensors in the home are disclosed. In one example approach, a method for determining time a subject spends outside of their home comprises receiving sensor firing data for a duration from sensors in the home, dividing the duration into epochs, extracting features from the sensor firing data received during the epoch, and classifying each epoch as out-of-home or in-home based on the features extracted from the sensor firing data during the epoch.
8 Citations
22 Claims
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1. A computer-implemented method for determining time a subject spends outside of their home, comprising:
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receiving sensor firing data for a duration from sensors in the home, the sensors comprising an exterior door sensor and room motion sensors; dividing the duration into epochs; for each epoch, extracting features from the sensor firing data received during the epoch, wherein extracting features from the sensor firing data received during the epoch comprises; calculating a number of sensor firings during the epoch; detecting whether the subject was in or out of a bed during the epoch based on sensor firing data from room motion sensors; in response to the exterior door sensor being the last sensor fired during the epoch, indicating a leaving event during the epoch; in response to the exterior door sensor being the first sensor fired during the epoch, indicating an arrival event during the epoch; identifying whether or not the last motion sensor fired during the epoch occurred in a room of the home from which the subject could directly leave the home; and classifying, using a classifier, each epoch as out-of-home or in-home based on the features extracted from the sensor firing data during the epoch. - View Dependent Claims (2, 3, 4, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22)
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5. The method 4, wherein the classifier uses logistic regression to classify each epoch.
Specification