Position detector for remote control

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jpmail9

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Left or right?

Hi,

I have a remote control (433MHz).I would lke to design a special detector to know where is the remote control: left or right?

The idea is to use 2 detectors with a separator made of steel (20mm*20mm*2mm), and to compare the strengh of the signal in each detector.

Look at the drawing, and sorry for my english

Thanks by advance

JP
 

Left or right?

It seems straightforward enough, though if you used
a pair
of lensed phototransistors / photodiodes their inherent
directionality might not need the separator (if you mounted
them at skewed angles).

Two pullup resistors and a comparator, and you've got your
left/right answer.
 

Left or right?

Consider, that the "separator" has a size of a few percent of the 433 MHz wavelength. It's screening effect can be compared
to a nano particle in visible light, the latter is simply shining around it.

That't not the way to design antennas with directivity.
 

Hi,

Thanks for your answers. Do you have another idea to design such detection?

By the way:
-I told about 433MHz, but it can be different if it's better.
-It's for indoor use (my bedroom, 6m*4m)

JP
 

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