Temperature gradient detector
First Claim
1. A temperature gradient containing:
- a peripheral area and active area wherein at least one temperature sensor is positioned in each respective area, an electronic circuit that generates signal indicative of a difference between temperatures of said peripheral and active areas.
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Accused Products
Abstract
To monitor temperature variations over a surface, the present invention employs a grid of thermoelectric wires imbedded into a carrier or body patch. The thermoelectric wires form a thermopile with “hot” junctions distributed over the central section of the body patch, while the “cold” junctions” are positioned at the periphery of the patch. The patch may be a wound dressing application. The thermopile is connected to an amplifier and subsequently to a threshold detector. Crossing a threshold activates a radio transmitter that sends a signal to a remote receiver. The carrier (patch) is applied to a monitored surface (examples are machinery enclosures and patient skin or wound) in such a manner that the peripheral portion of the patch is outside of the monitored area.
18 Citations
8 Claims
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1. A temperature gradient containing:
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a peripheral area and active area wherein at least one temperature sensor is positioned in each respective area, an electronic circuit that generates signal indicative of a difference between temperatures of said peripheral and active areas.
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2. A temperature gradient monitor for detecting temperature change over a surface, containing in combination:
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Two electrical conductors composed of different materials wherein such conductors are joined together to form at least two thermoelectric junctions;
a carrier to support said junctions;
an electronic circuit for processing and transmitting signals received from electrical conductors;
- View Dependent Claims (3, 4, 5, 6, 7)
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8. A wound dressing patch containing in combination:
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a thermopile assembly consisting of at least one pair of a thermoelectric junctions electronic circuit for processing signals received from said thermoelectric junctions;
a carrier to support said thermoelectric junctions and electronic circuit and to provide wound dressing functions.
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Specification