We're worried about possible interference from having multiple sensors of the same type (ie. 2 ultrasonic sensors using the same frequency).
There will be 3-5 sensors mounted on a belt, for 360 degree coverage.
I wouldn't have thought that interference between the sensors was much of a problem (the duration of each ping would be very small and you can ensure that only one sensors operates at a time)
It's a very common problem, particularly with inexpensive sensors.
Quote from: AWOL on Jan 08, 2013, 09:29 pmIt's a very common problem, particularly with inexpensive sensors.I'm surprised to learn that. Doesn't the speed of sound mean that each ping is over within a few ms? (Or in other words - if you haven't received the echo by then, surely it's too faint to detect?)