Smart sensing systems and related methods

Patent metadata

Field	Value
Publication number	US-10945663-B2
Application number	US-201515518712-A
Country	US
Kind code	B2
Filing date	Nov 4, 2015
Priority date	Nov 4, 2014
Publication date	Mar 16, 2021
Grant date	Mar 16, 2021

Abstract

A smart patch including multi-component strands integrated into clothing or other textiles where the strands of the smart patch include sensory elements that can simultaneously measure tactile forces, moisture/wetness, and other signals, such as biopotentials. A sensing system comprising: a first set of strands including a plurality of first multi-component strands, each of the first multi-component strands including a conductive portion and a non-conductive portion; and a second set of strands including a plurality of second multi-component strands, each of the second multicomponent strands including a conductive portion and a non-conductive portion, and a plurality of third multi-component strands, each of the third multicomponent strands including a conductive portion and a non-conductive portion, the third multi-component strands being different than the first multi-component strands and the second multi-component strands.

First claim

What is claimed is:

1. A sensing system comprising:
a plurality of first multi-component strands, each of the first multi-component strands including an elongated conductive first portion and a plurality of elongated non-conductive portions positioned around the conductive first portion and extending along a length of the conductive first portion, wherein the elongated conductive first portion and the plurality of elongated non-conductive portions form an H configuration when viewed in cross-section;
a plurality of second multi-component strands interwoven with the first multi-component strands, each of the second multi-component strands including an elongated conductive second portion and a plurality of elongated non-conductive portions positioned around the conductive second portion and extending along a length of the conductive second portion; and
a plurality of third multi-component strands interwoven with the first multi-component strands and interwoven with the second multi-component strands, each of the third multi-component strands including an elongated conductive third portion and a plurality of elongated non-conductive portions positioned around the conductive third portion and extending along a length of the conductive third portion, the third multi-component strands being different than the first multi-component strands and the second multi-component strands;
wherein the second multi-component strands are oriented orthogonal relative to the first multi-component strands, and wherein the third multi-component strands are oriented orthogonal relative to the first multi-component strands and wherein a plurality of first texels are formed at an intersection where the non-conductive portions of the first multi-component strands and the non-conductive portion of the second multi-component strands are in contact and forming an air gap between the conductive first portion and the conductive second portion, and wherein a plurality of second texels are formed at an intersection where the non-conductive portions of the third multi-component strands and the non-conductive portions of the first multi-component strands are in contact and forming an air gap between the conductive first portion and the conductive third portion; and
a circuit electrically coupled to the first texels and the second texels, the circuit configured to concurrently detect a change in capacitance or a change in impedance at the first texels and a biopotential signal of the user at the second texels.

2. The sensing system of claim 1 , wherein the conductive portion of the first multi-component strands, the second multicomponent strands, and the third multi-component strands comprises polymeric, metallic, or polymer/metallic materials.

3. The sensing system of claim 1 , wherein the non-conductive portion of the first multi-component strands, the second multicomponent strands, and the third multi-component strands comprises polymeric material.

4. The sensing system of claim 1 , wherein the circuit further comprises a wireless communications circuit configured to wirelessly transmit data from the first texels and the second texels to a remote computing device.

5. The sensing system of claim 1 , wherein the change in capacitance determines whether a force is applied to the first texels.

6. The sensing system of claim 1 , wherein the change in impedance determines whether a fluid is applied to the first texels.

7. The sensing system of claim 1 , wherein the biopotential is an electrocardiogram (ECG) signal.

8. A sensor patch comprising:
a first sensor formed at a first intersection of a first multi-component strand and a second multi-component strand, wherein the first multi-component strand forms an H configuration including a conductive first portion, a first insulator coupled to and orthogonally oriented relative to a first side of the conductive first portion and a second insulator coupled to and orthogonally oriented relative to a second side of the conductive first portion opposite the first side of the conductive first portion, the second multi-component strand includes a conductive second portion surrounded by a plurality of individual insulators, and wherein the first intersection includes an air gap separating the conductive first portion from the conductive second portion;
a second sensor formed at a second intersection of a third multi-component strand and the first multi-component strand, wherein the third multi-component strand includes a conductive third portion surrounded by a plurality of individual insulators, and wherein the second intersection includes an air gap separating the conductive first portion from the conductive third portion; and
a circuit electrically coupled to the first sensor to detect a change in capacitance and a change in impedance, the circuit electrically coupled to the second sensor to detect a biopotential from a user.

9. The sensor patch of claim 8 , wherein the circuit further comprises a wireless communications circuit configured to wirelessly transmit data from the first sensor and the second sensor to a remote computing device.

10. A sensor patch comprising:
a plurality of first multi-component strands, each of the first multi-component strands having an H configuration formed by a conductive portion and two non-conductive portions;
a plurality of second multi-component strands;
a plurality of third multi-component strands;
a first texel formed at a first intersection of the two non-conductive portions of one of the first multi-component strands and a non-conductive portion of one of the second multi-component strands, wherein the two non-conductive portions of the first multi-component strand and the non-conductive portion of the second multi-component strand forms a first air gap at the first intersection;
a second texel formed at a second intersection of the two non-conductive portions of one of the first multi-component strands and a non-conductive portion of one of the second multi-component strands, wherein the two non-conductive portions of the first multi-component strand and the non-conductive portion of the second multi-component strand forms a second air gap at the second intersection; and
a third texel formed at a third intersection of the two non-conductive portions of one of the first multi-component strands and a non-conductive portion of one of the third multi-component strands, wherein the two non-conductive portions of the first multi-component strand and the non-conductive portion of the third multi-component strand forms a third air gap at the third intersection,
wherein the first texel is configured to detect presence of fluid, the second texel is configured to detect an applied force, and the third texel is configured to detect a biopotential.

11. The sensor patch of claim 10 , further comprising a circuit electrically coupled to the first texel to detect a change in impedance, to the second texel to detect a change in capacitance, and to the third texel to detect the biopotential from a user.

12. The sensor patch of claim 10 , wherein the circuit further comprises a wireless communications circuit configured to wirelessly transmit data from the first texel, the second texel, and the third texel to a remote computing device.

13. The sensor patch of claim 10 , wherein the first multi-component strands, the second multi-component strands, and the third multi-component strands include a conductive portion.

14. The sensor patch of claim 10 , wherein the third multi-component strand is different than the first multi-component strand and the second multi-component strand.

15. The sensor

Assignees

• Univ North Carolina State

Inventors

• Bozkurt Alper
• Ghosh Tushar
• Mcknight Michael

Classifications

• A61B5/02405

  Determining heart rate variability · CPC title

• G01L1/14

  by measuring variations in capacitance or inductance of electrical elements, e.g. by measuring variations of frequency of electrical oscillators · CPC title

• A61B2562/125

  characterised by the manufacture of electrodes · CPC title

• A61F13/42

  with wetness indicator or alarm · CPC title

• D10B2401/18

  including electronic components · CPC title