Acoustic sensor
US9372111B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 12, 2013 |
| Grant date | Jun 21, 2016 |
| Priority date | — |
| Expiry date | May 19, 2034 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04R2201/003
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method of designing and manufacturing an acoustic sensor having a high degree of directivity is disclosed. The sensor includes a rotatable plate that is attached to a substrate with mounts. In one aspect the mounts are freely rotatable and the torque on the plate is measured using detectors disposed on springs that provide a resistance to rotation of the plate. In another aspect the plate is mounted to the substrate with mounts that torsionally deform during rotation of the plate. These detectors measure the torque on the plate according to the torsional deformation of the mounts. Methods of improving the signal to noise ratio of acoustic sensors having multiple detectors are also disclosed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.