公开(公告)号：US11327102B2

公开(公告)日：2022-05-10

申请号：US17001899

申请日：2020-08-25

申请人： THE CHARLES STARK DRAPER LABORATORY, INC.

发明人： 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分类号： G01R29/12 ,  G01R1/04 ,  G01R33/12 ,  G01R29/08 ,  G01R27/26 ,  G01R29/10 ,  A61B5/24 ,  A61B5/369 ,  A61B5/318

摘要： 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：US10859620B2

公开(公告)日：2020-12-08

申请号：US15944106

申请日：2018-04-03

申请人： THE CHARLES STARK DRAPER LABORATORY, INC.

发明人： 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分类号： G01R29/12 ,  G01R1/04 ,  G01R33/12 ,  G01R29/08 ,  G01R27/26 ,  A61B5/04 ,  A61B5/0476 ,  G01R29/10 ,  A61B5/0402

摘要： 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.