Scanning obstacle sensor for the visually impaired
US10134304B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 10, 2017 |
| Grant date | Nov 20, 2018 |
| Priority date | — |
| Expiry date | Jul 10, 2037 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61H2230/305
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Various arrangements for avoiding obstacles for a visually-impaired pedestrian are presented. An m by n matrix of distance measurements may be created using a scanning time of flight (ToF) sensor component for various different directions. The m by n matrix of distance measurements and the m by n direction matrix may be analyzed to identify a first obstacle having a vertical height that differs by at least a predefined threshold measurement from a neighboring second region. Based on identifying the first obstacle, an indication of the first obstacle and an indication of the distance to the first obstacle determined using the m by n matrix of distance indications may be output.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.