FABRIC-BASED PRESSURE SENSOR ARRAYS AND METHODS FOR DATA ANALYSIS
First Claim
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1. A fabric-based pressure sensor array, comprising:
- a textile sheet having a first surface and a second surface, and including M elongated conductive strips coated on the first surface and N elongated conductive strips coated on the second surface,wherein the M elongated conductive strips extend crosswise relative to the N elongated conductive strips to define M×
N intersections, and the textile sheet has a variable resistivity in response to applied pressure so as to define M×
N pressure sensors at locations corresponding to the M×
N intersections.
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Abstract
A fabric-based pressure sensor array includes: (1) a first layer including M elongated conductive strips coated thereon; (2) a second layer including N elongated conductive strips coated thereon, the M elongated conductive strips extending crosswise relative to the N elongated conductive strips to define M×N intersections; and (3) a unitary textile sheet extending between the first layer and the second layer so as to overlap the M×N intersections, the textile sheet having a variable resistivity in response to applied pressure so as to define M×N pressure sensors at locations corresponding to the M×N intersections.
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Citations
21 Claims
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1. A fabric-based pressure sensor array, comprising:
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a textile sheet having a first surface and a second surface, and including M elongated conductive strips coated on the first surface and N elongated conductive strips coated on the second surface, wherein the M elongated conductive strips extend crosswise relative to the N elongated conductive strips to define M×
N intersections, and the textile sheet has a variable resistivity in response to applied pressure so as to define M×
N pressure sensors at locations corresponding to the M×
N intersections. - View Dependent Claims (2, 3, 4)
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5. A fabric-based pressure sensor array, comprising:
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a textile sheet having a first surface and a second surface; a plurality of contact pads disposed adjacent to the first surface of the textile sheet; and a ground contact pad disposed adjacent to the second surface of the textile sheet and sized so as to at least partially overlap each of the plurality of contact pads to define a plurality of overlapping regions, wherein the textile sheet exhibits piezoresistivity so as to define a plurality of pressure sensors at locations corresponding to the plurality of overlapping regions. - View Dependent Claims (6, 7, 8, 9, 10, 11)
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12. A non-transitory computer-readable storage medium, comprising executable instructions to:
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receive a pressure distribution of an object as applied against an array of pressure sensors; select a pressure value from the pressure distribution as an outlier pressure value; adjust the outlier pressure value according to neighboring pressure values in the pressure distribution to derive an updated pressure distribution; and based on the updated pressure distribution, derive a posture of the object as applied against the array of pressure sensors. - View Dependent Claims (13, 14, 15)
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16. A non-transitory computer-readable storage medium, comprising executable instructions to:
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receive a pressure map of a human subject as applied against an array of pressure sensors, at least a subset of the array of pressure sensors being coupled via crosstalk; apply a decoupling transformation to the pressure map to derive an updated pressure map in which the crosstalk is at least partially reduced; and based on the updated pressure map, derive a posture of the human subject as applied against the array of pressure sensors. - View Dependent Claims (17)
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18. A system for posture recognition, comprising:
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a processing unit; and a memory connected to the processing unit and including executable instructions to; receive data corresponding to a two-dimensional pressure distribution of an object as applied against a sensor sheet; convert the data into a one-dimensional pressure sequence; and based on the pressure sequence, infer a posture of the object as applied against the sensor sheet. - View Dependent Claims (19, 20, 21)
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Specification