Hello
A simplex elevator logic means controlling 1 elevator
while duplex is for 2 elevators as in businesss centers.We did not use any fuzzy logic but it is running terrific.As for repeated button pushing we ignore it after once and when it is serviced then only we again accept it.The system i am talking was low cost since in india pricing is very important.We did not use any of the weight cells etc as some are suggesting .About the code we have not properly commented it yet so cant give it to u.any other help i will gladly give .bye and best of luck