iRobot Celestial Navigation System

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iRobot Celestial Navigation System

Guys at Robot Stock News have discovered a patent that was originally filed in 2004 by iRobot, and describes an indoor navigation system, similar to Mint's NortStar. The patent filing was updated several times during the years, and it was published in April 27, 2010. The system uses a stationary signal emitting device and a signal receiving unit built into the robot. By using the signals the robot is able to determine its relative position in the working area. With this and the information received from the collisions, the robot would able to draw a map of the area to provide systematic cleaning, including extensive cleaning of the dirtier areas. Just like the NorthStar system, iRobot's Celestial Navigation System requires a separate emitters for each room, but this system is able to roam from one room to another and back when recharging is needed. An interesting part of the patent is where the robot charges these emitters while cleaning in the room.
Like many other iRobot patents, this could end up in a drawer unused. For details and some of the shortcomings of the idea, head over to Robot Stock News.

iRobot Celestial Navigation System - one emitter for two rooms

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