公开(公告)号：US11327102B2

公开(公告)日：2022-05-10

申请号：US17001899

申请日：2020-08-25

Applicant: THE CHARLES STARK DRAPER LABORATORY, INC.

Inventor： James A. Bickford ,  Stephanie Lynne Golmon ,  Paul A. Ward ,  William D. Sawyer ,  Marc Steven Weinberg ,  John J. Le Blanc ,  Louis Kratchman ,  James S. Pringle, Jr. ,  Daniel K. Freeman ,  Amy Duwel ,  Max Lindsay Turnquist ,  Ronald Steven McNabb, Jr. ,  William A. Lenk

IPC: G01R29/12 ,  G01R1/04 ,  G01R33/12 ,  G01R29/08 ,  G01R27/26 ,  G01R29/10 ,  A61B5/24 ,  A61B5/369 ,  A61B5/318

Abstract: Aspects are generally directed to a compact and low-noise electric field detector, methods of operation, and methods of production thereof. In one example, an electric field detector includes a proof mass, a source of concentrated charge coupled to the proof mass, and a substrate having a substrate offset space defined therein, the proof mass being suspended above the substrate offset space. The electric field detector further includes a sense electrode disposed on the substrate within the substrate offset space and proximate the proof mass, the sense electrode being configured to measure a change in capacitance relative to the proof mass from movement of the proof mass in response to a received electric field at the source of concentrated charge. The electric field detector includes a control circuit coupled to the sense electrode and configured to determine a characteristic of the electric field based on the measured change in capacitance.

公开(公告)号：US20180292470A1

公开(公告)日：2018-10-11

申请号：US15944234

申请日：2018-04-03

Applicant: THE CHARLES STARK DRAPER LABORATORY, INC.

Inventor： James A. Bickford ,  Stephanie Lynne Golmon ,  Paul A. Ward ,  William D. Sawyer ,  Marc S. Weinberg ,  John J. LeBlanc ,  Louis Kratchman ,  James S. Pringle, JR. ,  Daniel Freeman ,  Amy Duwel ,  Max Lindsay Turnquist ,  Ronald Steven McNabb, JR. ,  William A. Lenk

IPC: G01R33/00 ,  G01R1/04 ,  A61B5/04 ,  G01R33/12

Abstract: Aspects are generally directed to a compact and low-noise magnetic field detector, methods of operation, and methods of production thereof. In one example, a magnetic field detector includes a proof mass, a magnetic dipole source coupled to the proof mass, and a substrate having a substrate offset space defined therein, the proof mass being suspended above the substrate offset space. The magnetic field detector further includes a sense electrode disposed on the substrate within the substrate offset space and positioned proximate the proof mass, the sense electrode being configured to measure a change in capacitance relative to the proof mass from movement of the proof mass in response to a received magnetic field at the magnetic dipole source. The magnetic field detector includes a control circuit coupled to the sense electrode and configured to determine a characteristic of the magnetic field based on the measured change in capacitance.

公开(公告)号：US20180284175A1

公开(公告)日：2018-10-04

申请号：US15944106

申请日：2018-04-03

Applicant: THE CHARLES STARK DRAPER LABORATORY, INC.

Inventor： James A. Bickford ,  Stephanie Lynne Golmon ,  Paul A. Ward ,  William D. Sawyer ,  Marc S. Weinberg ,  John J. LeBlanc ,  Louis Kratchman ,  James S. Pringle, JR. ,  Daniel Freeman ,  Amy Duwel ,  Max Lindsay Turnquist ,  Ronald Steven McNabb, JR. ,  William A. Lenk

IPC: G01R29/12 ,  G01R1/04 ,  A61B5/04 ,  G01R29/08 ,  G01R27/26 ,  G01R33/12

Abstract: Aspects are generally directed to a compact and low-noise electric field detector, methods of operation, and methods of production thereof. In one example, an electric field detector includes a proof mass, a source of concentrated charge coupled to the proof mass, and a substrate having a substrate offset space defined therein, the proof mass being suspended above the substrate offset space. The electric field detector further includes a sense electrode disposed on the substrate within the substrate offset space and proximate the proof mass, the sense electrode being configured to measure a change in capacitance relative to the proof mass from movement of the proof mass in response to a received electric field at the source of concentrated charge. The electric field detector includes a control circuit coupled to the sense electrode and configured to determine a characteristic of the electric field based on the measured change in capacitance.

公开(公告)号：US20180092557A1

公开(公告)日：2018-04-05

申请号：US15720583

申请日：2017-09-29

Applicant: THE CHARLES STARK DRAPER LABORATORY, INC.

Inventor： James A. Bickford ,  Louis Kratchman ,  Daniel Freeman ,  Laura Jane Mariano

IPC: A61B5/04 ,  A61B5/00 ,  A61B5/0245

CPC classification number: A61B5/04 ,  A61B5/0059 ,  A61B5/02141 ,  A61B5/0245 ,  A61B5/0478 ,  A61B5/0482 ,  A61B5/0536 ,  A61B2562/0204 ,  A61B2562/0247

Abstract: Aspects are generally directed to systems and methods that integrate contactless electric field detectors to measure biophysical signals generated by a body. In one example, a biophysical sensing system includes a sensing assembly including an array of contactless electric field detectors, each of the contactless electric field detectors being configured to sense a corresponding component of an electric field generated by a body, a control system to receive sensor data indicative of the components of the electric field sensed by each of the contactless electric field detectors, the control system being configured to generate an estimate of the electric field based on the sensor data, and a feedback system coupled to at least the control system, the feedback system including at least one feedback interface, the feedback system being configured to operate the feedback interface to provide feedback based on the estimate of the electric field.

公开(公告)号：US10859620B2

公开(公告)日：2020-12-08

申请号：US15944106

申请日：2018-04-03

Applicant: THE CHARLES STARK DRAPER LABORATORY, INC.

Inventor： James A. Bickford ,  Stephanie Lynne Golmon ,  Paul A. Ward ,  William D. Sawyer ,  Marc S. Weinberg ,  John J. LeBlanc ,  Louis Kratchman ,  James S. Pringle, Jr. ,  Daniel Freeman ,  Amy Duwel ,  Max Lindsay Turnquist ,  Ronald Steven McNabb, Jr. ,  William A. Lenk

IPC: G01R29/12 ,  G01R1/04 ,  G01R33/12 ,  G01R29/08 ,  G01R27/26 ,  A61B5/04 ,  A61B5/0476 ,  G01R29/10 ,  A61B5/0402

Abstract: Aspects are generally directed to a compact and low-noise electric field detector, methods of operation, and methods of production thereof. In one example, an electric field detector includes a proof mass, a source of concentrated charge coupled to the proof mass, and a substrate having a substrate offset space defined therein, the proof mass being suspended above the substrate offset space. The electric field detector further includes a sense electrode disposed on the substrate within the substrate offset space and proximate the proof mass, the sense electrode being configured to measure a change in capacitance relative to the proof mass from movement of the proof mass in response to a received electric field at the source of concentrated charge. The electric field detector includes a control circuit coupled to the sense electrode and configured to determine a characteristic of the electric field based on the measured change in capacitance.

公开(公告)号：US10531805B2

公开(公告)日：2020-01-14

申请号：US15720583

申请日：2017-09-29

Applicant: THE CHARLES STARK DRAPER LABORATORY, INC.

Inventor： James A. Bickford ,  Louis Kratchman ,  Daniel Freeman ,  Laura Jane Mariano

IPC: G01R31/00 ,  A61B5/04 ,  A61B5/0482 ,  A61B5/0478 ,  A61B5/053 ,  A61B5/00 ,  A61B5/0245 ,  A61B5/021

Abstract: Aspects are generally directed to systems and methods that integrate contactless electric field detectors to measure biophysical signals generated by a body. In one example, a biophysical sensing system includes a sensing assembly including an array of contactless electric field detectors, each of the contactless electric field detectors being configured to sense a corresponding component of an electric field generated by a body, a control system to receive sensor data indicative of the components of the electric field sensed by each of the contactless electric field detectors, the control system being configured to generate an estimate of the electric field based on the sensor data, and a feedback system coupled to at least the control system, the feedback system including at least one feedback interface, the feedback system being configured to operate the feedback interface to provide feedback based on the estimate of the electric field.