XV-11 LDS sensor callibration

[anfederman@comcast]

I am using ROS and RVIZ to experiment with the XV-11 Laser Distance sensor.  It seems to work ok, (sees 360 with few blind spots, but it's range seems pretty limited -  after about a meter, everything drops off abruptly.  Also it seems some things like dark clothing, are invisible to it.

 

Are there some calibration parameters that need to be tweaked?

 

 

Alan N. Federman, PhD
http://federman.best.vwh.net
http://www.linkedin.com/in/alan1federman
(408)227-6106 Home
(408)826-1795 Mobile

[Ted Larson]

Alan,

 

Since nobody replied yet…..The dark object problem always going to be a  problem…there is no getting rid of that.….however, you should be getting more than a meter off white objects….You should be able to get at more than 2M (about 6 ft.) pretty reliably.  The number one problem I have seen with getting the unit to work well is the speed you spin it at….its like the 3 bears….can’t be too fast or too slow….needs to be just right….but not terribly precise.  No PID required.    What I would suggest is, look at the valid measurement flag coming from the data stream.  Adjust the spin rate and peak the number of valid measurements you get off a white target.  We just put a POT in between the motor and a fixed DC supply on the robot, and then dialed it in by hand.

 

Hope this helps,

 

-Ted

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[Camp Peavy]

My guess is laser alignment. Let's try and meet on Wednesday March 6 if not before. I'll give you another LDS and have a look at this one. What's your cell number?
 
- Camp
650-305-0273

 

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From: "anfederman@comcast" <anfed...@comcast.net>
To: hbrob...@googlegroups.com
Sent: Thursday, February 28, 2013 11:09 AM

Subject: [HBRobotics] XV-11 LDS sensor callibration