Patents
US 12701920 B2: Capacitive self-sensing for electrostatic transducers with high voltage isolation
- Granted
- 2026-08-04
- Filed
- 2021-05-29 application 17928453
- Type
- Utility · 13 claims
- Elsewhere
- Google Patents ↗ · USPTO patent document ↗ · USPTO Patent Center record ↗
Abstract
Transducer systems disclosed herein include self-sensing capabilities. In particular, electrostatic transducers include a low voltage electrode and a high voltage electrode. A low voltage sensing unit is coupled with the low voltage electrode of the electrostatic transducer. The low voltage sensing unit is configured to measure a capacitance of the electrostatic transducer, from which displacement of the electrostatic transducer may be calculated. High voltage drive signals received by the high voltage electrode during actuation may be isolated from the low voltage sensing unit. The isolation may be provided by dielectric material of the electrostatic transducer, a voltage suppression component, and/or a voltage suppression module comprising a low impedance ground path. In the event of an electrical failure of the transducer, the low voltage sensing unit may be isolated from high voltages.
Source: PTBLXML, file of 2026-08-04 (ipgb20260804.xml).
Assignees
| Assignee | Type | Place | Also on furp.org | Source |
|---|---|---|---|---|
| The Regents of the University of Colorado, a body corporate 771 patents | US company or organization | Denver, CO | THE REGENTS OF THE UNIVERSITY OF COLORADO, A BODY CORPORATE CORP. State business registration FUZZY medium confidence: same name (legal endings aside) and state | PTBLXML, file of 2026-08-04 |
Inventors
| Inventor | Place | Patents | Person page | Source |
|---|---|---|---|---|
| Nikolaus Correll | Boulder, CO | PTBLXML, file of 2026-08-04 | ||
| Khoi D. Ly | Boulder, CO | PTBLXML, file of 2026-08-04 | ||
| Nicholas Alexander Kellaris | Boulder, CO | 11 | PTBLXML, file of 2026-08-04 | |
| Christoph Matthias Keplinger | Gerlingen, DE | 13 | PTBLXML, file of 2026-08-04 |
CPC categories
| Subclass | Category | First group | Source |
|---|---|---|---|
| H10N | Electric solid-state devices not otherwise provided for | H10N30/802 | PTBLXML, file of 2026-08-04 |
| G01D | Measuring not specially adapted for a specific variable; arrangements for measuring two or more variables not covered in a single other subclass; tariff metering apparatus; measuring or testing not otherwise provided for | G01D5/24 | PTBLXML, file of 2026-08-04 |
| G01L | Measuring force, stress, torque, work, mechanical power, mechanical efficiency, or fluid pressure | G01L1/144 | PTBLXML, file of 2026-08-04 |
Cooperative Patent Classification, as currently assigned (one row per subclass).
Assignments and security interests
No recorded assignments or security interests on file for this patent.
USPTO bulk data: PatentsView granted patents, disambiguated (PVGPATDIS) for patents, assignees, inventors, places and CPC categories; the USPTO Patent Assignment Dataset (ECORSEXC) for assignments and security interests. Patents filed in the last 20 years. No claims or full text. Links to other records are by name (and state): EXACT means the identical full name and state; FUZZY means a looser name match, with the confidence shown.