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sneakarcher
Joined: 21 Oct 2009
Posts: 2
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 21 Oct 2009 1:01 sensor recommendation |
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Hi,
I need a sensor that measures IR intensity. I am working on a target seeking robot. A beacon that emits IR will be the target, and a sensor mounted on robot should measure the distance (might not accurate) between robot and target/beacon using the intensity of the IR.
If there's any receiver alone or emitter/receiver pair, or a module as such (expensive or not), kindly let me know.
Ideally range should be large, but I can cope with smaller range.
Any help would be highly appreciated.
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kender
Joined: 19 Jun 2005
Posts: 1231
Helped: 88
Location: Stanford, SF Bay Peninsula, California, Earth, Solar System, Milky Way
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21 Oct 2009 8:04 Re: sensor recommendation |
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| sneakarcher wrote: |
A beacon that emits IR will be the target, and a sensor mounted on robot should measure the distance (might not accurate) between robot and target/beacon using the intensity of the IR.
[...]
Ideally range should be large, but I can cope with smaller range. |
The subject of estimating distance from the intensity of reflected IR comes up once ever so often on this forum. In a general, estimating distance from intensity of reflected light is not a working strategy. May be there is something about your target or rules of the game which may make this strategy work. May be there is not.
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21 Oct 2009 8:04 Ads |
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sneakarcher
Joined: 21 Oct 2009
Posts: 2
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21 Oct 2009 8:13 Re: sensor recommendation |
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| kender wrote: |
| sneakarcher wrote: |
A beacon that emits IR will be the target, and a sensor mounted on robot should measure the distance (might not accurate) between robot and target/beacon using the intensity of the IR.
[...]
Ideally range should be large, but I can cope with smaller range. |
The subject of estimating distance from the intensity of reflected IR comes up once ever so often on this forum. In a general, estimating distance from intensity of reflected light is not a working strategy. May be there is something about your target or rules of the game which may make this strategy work. May be there is not. |
I understand your point. But actually my problem is a bit different. Its not the reflected light with the obstacle, its the direct IR from another source in the line of sight. I have seen sensors which can tell direction of IR emitter from quite a distance (more than 8 feet). That's why I thought there might be some IR receiver i could use by estimating from intensity somehow.
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