Fabric-based pressure sensor arrays and methods for data analysis
First Claim
Patent Images
1. A fabric-based pressure sensor array, comprising:
- a first layer including M elongated conductive strips coated thereon;
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 x N intersections; and
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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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.
72 Citations
9 Claims
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1. A fabric-based pressure sensor array, comprising:
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a first layer including M elongated conductive strips coated thereon; 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 x N intersections; and 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. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A fabric-based pressure sensor array system, comprising:
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a fabric-based pressure sensor array, comprising; a first layer including M elongated conductive strips coated thereon; 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;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; anda plurality of connectors, each connector attached to a respective one of the M elongated conductive strips on the first layer or a respective one of the N elongated conductive strips on the second layer; wherein the M×
N pressure sensors defined at the M×
N intersections are addressable through a number M+N of connectors;a circuit coupled to ones of the M+N connectors and configured to measure an electrical parameter at each of the ones of the connectors; and a processing unit configured to receive the measurements from the circuit, and correct for a crosstalk effect of the M×
N pressure sensors by applying a decoupling matrix of size n×
n, where n=M×
N;wherein the crosstalk effect of the M×
N pressure sensors with respect to the measurements at the M+N connectors is described by a transformation matrix of size n×
n, where the decoupling matrix is the inverse of the transformation matrix.
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Specification