Interesting IR sensor test results

[abeD]

Originally Posted by JHSmentor

Do you think this would something you could/would build around the exisiting IR board and receiver that where given to us? kind of like a filtering shield that only lets in the frequency that you will be transmitting?

Yea that's what I was trying to say although i have no idea if that is possible with the given board. Someone else that's actually working with this thing will have to say.

[Lions for First]

i dont know all that much about IR but what kind of "filter" would you use that blocks all other frequencies but one?

[abeD]

You don't block all frequencies but one (if you could do that simply then you would be making alot of money) but with some combination of low pass and high pass filters you can get a nice bandpass of filters centered around where you are transmitting. Do a wikipedia search on filters and try to get through it. All of the stuff I've learned about is college level engineering so it might not be the easiest thing to understand.

There are also several types of active filters as well that have a sharper "edge" to them on their bode plot. (a magnitude vs. frequency plot).

[JHSmentor]

Originally Posted by abeD

You don't block all frequencies but one (if you could do that simply then you would be making alot of money) but with some combination of low pass and high pass filters you can get a nice bandpass of filters centered around where you are transmitting. Do a wikipedia search on filters and try to get through it. All of the stuff I've learned about is college level engineering so it might not be the easiest thing to understand.

There are also several types of active filters as well that have a sharper "edge" to them on their bode plot. (a magnitude vs. frequency plot).

I like the idea of it but don't know how either. I read some patents and some college papers and it's a bit confusing (particularly because I could not view any of the images).