Mosaic
Well-Known Member
Hi, I am looking at making a pair of capacitive (compressible) sensors for a 2 step environment to track people movement. I tried the optical approach but mounting the IR is a problem, can't do opposing tx/rx pairs as the 'doorway' swing interferes with the optic mounting. Reflective IR is also compromised by having to 'tune' the range to within a couple of inches to 'ignore' the door, which can be reflective. Tough to do reliably.
It's a 'small' bus , 25 seater, application, to track # of people onboard.
I need some help with the 'logic' in counting persons directionally using the step switches. The challenge is that as a person vacates a step , the following person can place a foot on it so the logic has to do with transitions as opposed to states.
What I have so far (footsteps)
1) Person 1 enters bus climbing steps A and B, followed by person 2 doing the same:
A free B free, A(1) B free , A(1) B(1), A free B(1), A(2) B(1), A(2) B(free) , A(2) B(2) and so on.
A similar but converse arrangement for footsteps exiting the bus.
Any advice on picking a particular transition that would reliably identify # of persons entering or leaving?
thx!
It's a 'small' bus , 25 seater, application, to track # of people onboard.
I need some help with the 'logic' in counting persons directionally using the step switches. The challenge is that as a person vacates a step , the following person can place a foot on it so the logic has to do with transitions as opposed to states.
What I have so far (footsteps)
1) Person 1 enters bus climbing steps A and B, followed by person 2 doing the same:
A free B free, A(1) B free , A(1) B(1), A free B(1), A(2) B(1), A(2) B(free) , A(2) B(2) and so on.
A similar but converse arrangement for footsteps exiting the bus.
Any advice on picking a particular transition that would reliably identify # of persons entering or leaving?
thx!