Echolocation systems and methods
US9377530B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 14, 2013 |
| Grant date | Jun 28, 2016 |
| Priority date | — |
| Expiry date | Jul 10, 2034 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61H2201/5097
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
An echolocation device assists visually impaired persons to navigate their environment. The echolocation device comprises a micro control unit, a power source operably connected to the micro control unit, a band pass preamplifier operably connected to the micro control unit, a power amplifier operably connected to the band pass preamplifier, a piezoelectric speaker operably connected to the power amplifier, and a user interface operably connected to the micro control unit. The device emits sound waves that echo off nearby surrounding objects. The visually impaired person listens to the echoes to determine the location or size of the surrounding objects.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.