Temperature sensing fabric
First Claim
1. A temperature sensing fabric article adapted to contact at least a portion of a subject, said fabric article comprising a material comprised of woven optical fibers with at least one of the optical fibers having a plurality of fiber Bragg grating optic sensors integrated thereinto to sense the temperature of the subject at a plurality of locations by creating a detectable shift in the wavelength of light radiation emitted from and returning to the fiber Bragg grating optic sensors.
1 Assignment
0 Petitions
Accused Products
Abstract
A blanket or article of wearing apparel for a subject such as an infant. A fiber optic temperature sensing element is integrated into the fabric by a process such as weaving. The temperature sensing element is a optic fiber having inscribed therein one or more fiber Bragg grating sensors such that a light is introduced into the optic fiber and that light directed onto the subject at a grating interface. A return light signal is received, either by a reflectance mode or a transmission mode, where the return light signal has a wavelength shift indicative of the temperature of the subject by Bragg resonant effect. Higher temperature sensitivity is obtained with a metal material of a high thermal expansion coefficient that is coated around the fiber sensor cladding.
41 Citations
17 Claims
- 1. A temperature sensing fabric article adapted to contact at least a portion of a subject, said fabric article comprising a material comprised of woven optical fibers with at least one of the optical fibers having a plurality of fiber Bragg grating optic sensors integrated thereinto to sense the temperature of the subject at a plurality of locations by creating a detectable shift in the wavelength of light radiation emitted from and returning to the fiber Bragg grating optic sensors.
- 7. A system for measuring the temperature of a subject comprising an article comprising a woven material of optical fibers having a plurality of fiber Bragg grating optic temperature sensors integrated into at least one of the optical fibers, a light source for transmitting light to the fiber Bragg grating optic temperature sensors, the fiber Bragg grating optic temperature sensors directing that light onto the subject and receiving light reflected from the subject having a wavelength shift of the light indicative of the temperature of a subject, a light sensor for receiving light received by the fiber optic temperature sensors and a signal processor adapted to interpret the wavelength shift of the light directed and received by the fiber Bragg grating optic temperature sensors to determine the temperature of a subject at multiple locations.
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15. A method of sensing the temperature of a living subject comprising:
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providing an article comprising a material of woven optical fibers having at least one fiber Bragg grating optic temperature sensor integrated into one of the optical fibers, placing the article in thermal communication with the living subject, providing a light signal to the at least one fiber Bragg grating optic temperature sensor whereby the at least one fiber Bragg grating optic temperature sensor directs the light signal onto the subject and receives a return light signal from the living subject having a wavelength shift indicative of the temperature of the living subject, determining the temperature of the subject by interpreting the wavelength shift indicative of the temperature of the living subject in the return light signal. - View Dependent Claims (16, 17)
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Specification