IR Proximity And Ultrasonic Range Finder Sensitivity

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Phedg1
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IR Proximity And Ultrasonic Range Finder Sensitivity

Post by Phedg1 » Fri Dec 26, 2014 11:19 pm

I'm looking at proximity sensors under $35. They all have varying ranges but what I was wanting to know was what is the angle of sensitivity and whether that angle is in the form of an arc or a cone? (I'm trying to find the thinnest one)

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Ross Robotics
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Re: IR Proximity And Ultrasonic Range Finder Sensitivity

Post by Ross Robotics » Sat Dec 27, 2014 10:33 am

So do you have a question regarding Sparkfun's website? That's the forum you're in..
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Mee_n_Mac
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Re: IR Proximity And Ultrasonic Range Finder Sensitivity

Post by Mee_n_Mac » Sat Dec 27, 2014 1:01 pm


Phedg1
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Re: IR Proximity And Ultrasonic Range Finder Sensitivity

Post by Phedg1 » Sat Dec 27, 2014 10:37 pm

I found it very unclear which section I should post my question into. I had difficulty interpreting the beam patterns. What are the sizes of the grid squares?

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Re: IR Proximity And Ultrasonic Range Finder Sensitivity

Post by Mee_n_Mac » Sun Dec 28, 2014 7:47 am

The grid size is reported to be 30 cm (just under 1 foot = 30.5 cm) at the top if each graph, so each block is 30 cm wide by 30 cm tall (or about 1' x 1'). Some more comparisons can be found below along with a more conventional beam pattern (in degrees) for the transducer used in, apparently, all the sonars. I guess the BW of each sonar must be shaped by some external means to get the differing BW's for each product ??

http://www.pololu.com/file/0J69/MaxBotixNewProducts.pdf
http://www.maxbotix.com/documents/LV-Ma ... tterns.pdf

More results if you Google "maxbotix beam pattern grid size".

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