how to transmit IR data up to 100 ft outdoor and over?

try using laser

mike

Dear; The IR have range of frequency if you work near the end of the range it will give you longer distance but for outdoor i'm not sure of the quality i.e. near the end of the range maybe you get interference, so if you allow me, can I know more about your application?

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ty mike,but i should avoid laser ,invisible IR laser could be harmful to the eye.

yes ,a couple of friends ,amateur racing car drivers,asked me something able to transmit a short pattern from boxes to car ,in very little time(100th of second), i can't use laser because IR laser can harm the eye and it is possible that on the other side of the track there is some people watching in front of the beam

ty for help.

Un bel giorno blisca digitò:

Applications like this are usually done with radio communications.

Not a problem if you keep it to Class 1 limits.

able

time(100th of

watching

really?very interesting can you suggest me some cheap laser IR diode?

Thanks again to all the people that answered me,or just red my post.

I think for those conditions i would use either DSRC or ISM radio. Possibly bluetooth or Wi-Fi.

eye

Possibly

Thank you but can one of this methods be so focusized as light does?

Why would it be useful to use such a narrow beam?

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something

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because it acts like a chronometer too

Then you have two previously unstated issues: 1. doing an unstated added task; 2. mixing unrelated tasks in a single device. Leaving requirements out when you ask for help will just guarantee that you get inappropriate results.

sure

some

you

Yes,you are totally right

Altering the Subject line to indicte how deeply your post is nested in the thread is COMPLETELY unnecessary.

Is the sender and reciver firm placed ?- then maybe a parabola on both parts could help with increasing signal. A lens or parabola will lower the ambient lights influence in most cases.

Now I wonder ;Is it possible to use some kind of polarisation filter for IR ??? to remove reflections and ambient light ???

Properly encoded signals should not be affected and a laser transmitter should need no such filter.

I don't understand wher is my error.Can you copy and paste the previous message to show how my post should have been and where the error is?

sun )

Yes ,the optical way seems resolutive,even a cheap lens used in the so called "3rd hand" with alligator clips almost doubles the distance ,once positioned at a couple of inches from the emitting IR diode. I just am curious about the method used inside the common infrared photomodules,i know they have bandpass filter and agc ,but i would like to know the way they works.

blisca wrote:

Your last Subject line reads R: R: R: R: how to transmit IR data up to 100 ft outdoor and over?

Your most recent Subject line reads Re: R: how to transmit IR data up to 100 ft outdoor and over?

The additionional **R's** are not necessary. If your software is automatically adding them, you need to reconfigure it.

If you are manually adding the just stop it.