Neato XV-11 Charging base
As I was laying in bed last night thinking about LIDAR units I started thinking about how my XV-11 that is sitting in the box on my desk appears to run and control its drive motors without ever actually moving. It does not get an error of any kind, just keeps chugging along even though the LIDAR data being returned to it obviously indicates it is not moving anywhere.
Perhaps the LIDAR data is just for creating its internal map and since my box is easy to map it gets the data it is looking for and happily tries to drive around. I then started thinking about the charging base and how it could find this base when the base unit itself doesn't seem to send any data. A closer look shows something interesting...
Here is a picture of the unit, camera flash not used

Here is a picture of the unit, camera flash is turned on

Here is the unit with the filter (probably IR) removed.

I thought how cool is that!! Using the reflections from the charging base as a sort of LIDAR bar code! This thing just keeps impressing me! It will be interesting to look at the raw data output from the LIDAR to see how the signaling is coming across. At first glance it appears that the signal strength data will contain this info.
Posted by Hash at 9:16 AM
2 comments:
fake said...
That silvery material is called "retroreflector". It's the same thing used on road signs and safety vests. What is neat about retroreflector is that it sends light back in exactly the direction it came, with very little loss.
In this case, it means not only will there be the pattern showing up brightly, but the directional aspect means that it will be the brightest thing in the room for a certain set of angles -- which is to say in the direction of the charger.
November 29, 2010 11:33 PM
Hash said...
Thank you for the clarification. I noticed the reflective properties as I set the charger in my test setup. Signal strength readings were VERY strong.
December 1, 2010 12:48 AM