BED LOAD CELL BASED PHYSIOLOGICAL SENSING SYSTEMS AND METHODS
First Claim
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1. A system comprising:
- a person support apparatus;
at least two force transducers configured to mount on said person support apparatus, said at least two force transducers configured to generate signals indicative of forces acting on said at least two force transducers; and
a controller comprising a processor configured to receive signals from said at least two force transducers, said controller configured to process signals received from said at least two force transducers to determine blood volume pulse information.
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Abstract
A system for determining a physiological signal of a person supported by a person support apparatus using signals from force transducers is described herein. Force transducers communicate with a controller to transmit signals indicative of weight acting on them. The controller determines blood volume pulse information from the signals received from the force transducers. Heart rate and respiratory rate information is derived from the blood volume pulse information.
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Citations
30 Claims
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1. A system comprising:
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a person support apparatus; at least two force transducers configured to mount on said person support apparatus, said at least two force transducers configured to generate signals indicative of forces acting on said at least two force transducers; and a controller comprising a processor configured to receive signals from said at least two force transducers, said controller configured to process signals received from said at least two force transducers to determine blood volume pulse information. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A person support apparatus comprising:
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a mattress configured to support a person; at least two force transducers configured to generate signals indicative of components of weight of a person supported by said mattress acting on said at least two force transducers; and a controller comprising a processor configured to receive signals from said at least two force transducers, said controller configured to process signals received from said at least two force transducers to determine blood volume pulse information. - View Dependent Claims (10, 11, 12, 13, 14)
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15. A physiological signal sensing system for use with a person support apparatus, the system comprising:
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at least two force transducers configured to generate signals in response to weight supported by said at least two force transducers; and a controller comprising a processor configured to receive signals from said at least two force transducers, said controller configured to process signals received from said at least two force transducers to determine blood volume pulse information. - View Dependent Claims (16, 17, 18, 19)
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20. A system comprising:
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a person support apparatus; means to generate signals indicative of components of weight acting said person support apparatus; and means to determine blood volume pulse information from said signals indicative of components of weight acting on said person support apparatus. - View Dependent Claims (21, 22)
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23. A method of sensing a physiological signal of a person supported by a person support apparatus, the method comprising:
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generating signals indicative of components of forces acting on said person support apparatus using at least two force transducers; transmitting said signals to a controller; and processing signals indicative of components of forces acting on said person support apparatus to determine blood volume pulse information. - View Dependent Claims (24, 25, 26, 27, 28, 29, 30)
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Specification