Ambient and perfusion normalized temperature detector
DCFirst Claim
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1. A body temperature detector comprising:
- a temperature sensor which senses surface temperature of the body and electronics which compute an internal temperature of the body as a function of ambient temperature and the sensed surface temperature of the body, the function including a weighted difference of the sensed surface temperature and the ambient temperature, the weighting being varied with sensed temperature.
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Abstract
A body temperature detector is particularly suited to axillary temperature measurements of adults. The radiation sensor views a target surface area of the body and electronics compute an internal temperature of the body as a function of ambient temperature and sensed surface temperature. The function includes a weighted difference of surface temperature and ambient temperature, the weighting being varied with target temperature to account for varying perfusion rate. Preferably, the coefficient varies from a normal of about 0.13 through a range to include 0.09. The ambient temperature used in the function is assumed at about 80° F. but modified with detector temperature weighted by 20%.
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Citations
17 Claims
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1. A body temperature detector comprising:
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a temperature sensor which senses surface temperature of the body and electronics which compute an internal temperature of the body as a function of ambient temperature and the sensed surface temperature of the body, the function including a weighted difference of the sensed surface temperature and the ambient temperature, the weighting being varied with sensed temperature.
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2. A body temperature detector comprising:
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a temperature sensor which senses a surface temperature of a body; and
electronics which compute an internal temperature of the body as a function of an ambient temperature and a sensed surface temperature, the function including a weighted difference of the sensed surface temperature and the ambient temperature, the weighted difference including a weighting factor which varies with the sensed surface temperature. - View Dependent Claims (3, 4, 5, 6, 7, 8)
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9. A body temperature detector comprising:
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a temperature sensor which senses a surface temperature of a body; and
electronics which compute an internal temperature of the body as a function of an ambient temperature and a sensed surface temperature, wherein the ambient temperature within the function is an assumed ambient temperature. - View Dependent Claims (10, 11, 12, 13)
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14. A method of detecting body temperature comprising:
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sensing surface temperature of a body;
computing an internal temperature of the body as a function of an ambient temperature and a sensed surface temperature, the function including a weighted difference of the sensed surface temperature and the ambient temperature, the weighted difference including a weighting factor which varies with the sensed surface temperature; and
providing an internal temperature signal. - View Dependent Claims (15)
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16. A method of detecting body temperature comprising:
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sensing surface temperature of a body;
computing an internal temperature of the body as a function of an ambient temperature and a sensed surface temperature, the ambient temperature within the function being an assumed ambient temperature; and
providing an internal temperature signal. - View Dependent Claims (17)
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Specification