IR vs Ultrasonic Sensor

Community General Discussions
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1

I have used ultrasonic sensors in the past. However, i have noticed they have a wide arc of vision. I want very precise sensor readings for my new project, and I was curious as to the pros and cons for either sensor option, or something else. I am mainly looking for affordablilty and precision.

2

My plan is to take input

My plan is to take input from multiple sensors located around the robot and map it into a grid of maybe 1" squares. I want readings percise enough that if I take a few and average them I can get a pretty good idea of what is in the square.

3

Do you know the concept behind 3d scanners?

Their setup would be very useful for getting precise readings.

4

Blinkers…we called’em

Blinkers…we called’em blinder’s… :wink:

heres something else to think about …Native people carved a narrow slit into a whale rib and made goggles …The tiny slit would only allow a little light through …this prevented snow blindness…

Light and sound …two different things …but wave’s none the less…

a guy could probably experiment with something as simple a black tape and foam food trays to get a sweet spot with either sensor.

5

Thanks for the help.

Thanks for the help.

6

Any particular reason a guy

Any particular reason a guy couldnt use some thing like this??

 

http://www.intersil.com/content/dam/Intersil/documents/fn67/fn6732.pdf

 

http://www.intersil.com/en/products/optoelectronics/proximity-sensors/light-to-digital-sensors/ISL29021.html

 

 

7

IR is definitely not so cool

IR is definitely not so cool for projects outdoors, the ambient light would literally “troll” your project :D 

But it is pretty efficient if your project is taking place indoors. 

For eg: line following indoors using IR would be great, but outdoors, without any shielding or other measures, it’s a bad idea.

I have used the HC-SR04s. They are accurate, but i wouldn’t say that they are totally efficient. I guess the nature of the surface would determine the results. I got constant readings without any flaws on a perfectly smooth surface, however, results varied a lot when the surfaces where rough or bumpy.

What project is it that you are trying to implement ultrasonic/IR communication?  

8

It is an indoor robot, so

It is an indoor robot, so that is not a problem. The surfaces will be relatively regular. What I am looking for is the narrowest beam possible.