Hi
I just need an advice on a possible wireless solution for my system.
My task is to collect responses from test-subjects in medical research studies. This is done with different response pads with push-buttons. Since the test subject is inside a scanner during the examination it would be practical to have battery driven response pads with a wireless transmission solution instead of cabling.
But my biggest problem with such a solution I guess is the timing issue because timing in these studies are often critical, and deviation in the delay from one response to the other more than a
10-100 ms caused by signal delay in the system is not accepted.Does anyone have a suggestion on a ready to use solution for such a timing critical wireless system?
-Transmission length is maximum 7-10 meters (30 feet???) from sender to receiver
-This is inside a faradays cage, meaning little RF noise in the room, but for regulative reasons only the common used frequency bands (open) should be used.
-Up to 3-4 independent transmitters should be able to work with the receiver simultaneously
My idea is that some alarm systems probably are wireless with strict requirements, and not to forget high-end gaming devices that use a wirless solution (if that excist...)
I'm greatful for any suggestions or advice.
Stian SS