PING)))'s beam pattern?
Hello,
I have read through the documentation for the ultrasonic sensor PING))), but i don't understand the beam pattern diagram provided·for the tests conducted in the document.
The document i mentioned can be downloaded from·link below:
http://www.parallax.com/dl/docs/prod/acc/28015-PING-v1.3.pdf
For example, in test 1, doesn't it mean that the sensor is capable of detecting cylindrical object at max range of about 7.5' at 0 degree angle? And the maximum angle that the sensor can detect a cylindrical object is at 20 degrees, with max range of 5.5' at this angle?
Please correct me if i'm wrong. Another question is is there any way to enlarge the detection angle of the sensor? meaning widen the vision cone of the sensor.
Can someone pls enlighten me?![confused.gif](http://forums.parallax.com/images/smilies/confused.gif)
Thanks in advance!
Kind regards,
gon
I have read through the documentation for the ultrasonic sensor PING))), but i don't understand the beam pattern diagram provided·for the tests conducted in the document.
The document i mentioned can be downloaded from·link below:
http://www.parallax.com/dl/docs/prod/acc/28015-PING-v1.3.pdf
For example, in test 1, doesn't it mean that the sensor is capable of detecting cylindrical object at max range of about 7.5' at 0 degree angle? And the maximum angle that the sensor can detect a cylindrical object is at 20 degrees, with max range of 5.5' at this angle?
Please correct me if i'm wrong. Another question is is there any way to enlarge the detection angle of the sensor? meaning widen the vision cone of the sensor.
Can someone pls enlighten me?
![confused.gif](http://forums.parallax.com/images/smilies/confused.gif)
Thanks in advance!
Kind regards,
gon
Comments
Detection of targets of the·dimensions, shapes, and·orientation of the target·surface·relative to the Ping))) specified for the tests are what the range/angle data show. The kind of material (and/or surface texture) might also influence the range/angle of detection.
I believe the "vision cone" of the sensor is fixed (not modifiable) by the specific mechanical structure of the sensor device. Aiming the sensor (moving its orientation) could widen the field of survey, but it would involve signalling multiple times, once for each aiming position.
PAR
Thanks for your reply
Just to clarify again, am I correct to say that for the case of test 1, is it true that the sensor is capable of detecting a cylindrical object at max range of about 7.5' at 0 degree angle? And the maximum angle that the sensor can detect a cylindrical object is at 20 degrees, with max range of 5.5'? What I understand here is this test was done by fixing the position and direction of the PING))) sensor, and move the object to draw out the detection range, am i right?
Thanks in advance!
gon
Your interpretation of the graph is otherwise about right. I assume that they conducted the testing generally the way you described, maybe with some repeated observations at each position, and/or maybe using different samples of the Ping))) device, and reporting averaged results?
PAR
Cheers,
gon