Device and Method of Monitoring a Position and Predicting an Exit of a Subject on or from a Substrate
First Claim
1. A method for monitoring a subject, comprising:
- sensing incident pressure waves generated by the subject moving on a divided bladder comprising interleaved portions with at least one sensor in fluid communication with a respective portion of the divided bladder;
generating signals indicative of the incident pressure waves for each of the interleaved portions of the bladder and sending the signals to a processor;
determining a position of the subject on the divided bladder based on a difference between the signals from each of the interleaved portions; and
generating a position pattern for the subject over a period of time.
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Accused Products
Abstract
Methods and devices for monitoring the position of a subject are disclosed. One such method includes sensing pressure waves generated by the subject moving on a divided bladder comprising interleaved portions, generating signals indicative of the pressure waves for each of the interleaved portions, and sending the signals to a processor. The method further includes determining the position of the subject based on the difference between the signals from each of the interleaved portions and generating a pattern for the subject. The pattern includes the presence and/or position of the subject over time. The method further includes predicting an action such as an exit of the subject from the divided bladder based on comparing a current pattern for the subject to previous patterns for the subject.
131 Citations
24 Claims
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1. A method for monitoring a subject, comprising:
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sensing incident pressure waves generated by the subject moving on a divided bladder comprising interleaved portions with at least one sensor in fluid communication with a respective portion of the divided bladder; generating signals indicative of the incident pressure waves for each of the interleaved portions of the bladder and sending the signals to a processor; determining a position of the subject on the divided bladder based on a difference between the signals from each of the interleaved portions; and generating a position pattern for the subject over a period of time. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A non-intrusive monitoring device for monitoring a subject, the device comprising:
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a divided bladder comprising interleaved portions; one or more sensors in fluid communication with each of the interleaved portions of the divided bladder wherein the one or more sensors are configured to generate signals in response to pressure variations resulting from movement of a subject on the divided bladder; and a processor configured to; receive signals from the one or more sensors for each of the interleaved portions; determine the subject'"'"'s position on the divided bladder based on a difference between the signals from each of the interleaved portions; and generate a position pattern for the subject over a period of time. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20, 21, 22, 23)
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24. A device for monitoring the position of a subject on a substrate, comprising:
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a sensing unit having a divided bladder comprising interleaved portions configured to be placed on or under the substrate on which the subject lies, and one or more sensors in fluid communication with each of the interleaved portions, wherein the one or more sensors are configured to sense pressure variations within the divided bladder generated by movement of the subject and to generate signals indicative of the pressure variations; a processor configured to receive the signals and to determine and generate output indicative of the subject'"'"'s position based on the difference between the signals from each of the interleaved portions; and an external device configured to display the output.
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Specification