Method for controlling an autonomous mobile robot and related device
US7787989B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jan 31, 2003 |
| Grant date | Aug 31, 2010 |
| Priority date | — |
| Expiry date | Jun 3, 2026 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG05D1/0265
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
The invention concerns a navigation device for a mobile robot comprising means for measuring the amplitude and the phase of an electromagnetic signal emitted by a wire acting as limit for a working area of the robot. The measuring means samples the amplitude of the signal during each time interval, the result of each measurement is stored in a memory and the measurements are repeated for several time intervals, the collected results being added in said memories until the content of a memory reaches a reference threshold. The number of samples required and the content of each memory is interpreted by numerical analysis to determine the distance or distance variation relative to said limiting elements. Any phase change corresponding to a passage beyond the limiting wire is easily detected and results for example in a command returning the robot to its working area.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.