ahuhuhuhuhuhu... tomorrow I need to finish our project tomorrow waaa... its all about making a concept of a parking lot system meaning that i must make the concept of the whole system including switches, elevators, traffic lights etc... My god I am just 3rd yr COE but still i did'nt learned that much coz the instructors didn't thought us that us that much... ahuhuuhu... I just got finished with thet traffic lights system with swiches... but damn.. the concept of an elevator is damn hard to understand... 1st I had a 12v DC motor damn.... i know how to set it on its position for lifting... but theirs problems i encountered
1st is that how could a manupulated the up n downs of the elevator
by switching its poles with only one switch..
2nd when the elevator reaches the top or down how could it switch
its power to off..
3rd and finally after being off at the top how could i lock it with out letting if fall from the top.
2007-03-07 06:11:05 · 2 answers · asked by Chris 2 in Science & Mathematics ➔ Engineering
1st: you need a comutator switch
2nd: when it reaches the top it has to pass over a lever (stopper) or a magnetic sensor or a photo sensor, the same at the bottom; the device powers off the motor.
3rd: at the motor you provide a gear with oriented teeth and a device that de-locks the gear when moving down.
2007-03-07 09:00:24 · answer #1 · answered by acatalinus 2 · 0⤊ 0⤋
what?
2007-03-07 14:14:32 · answer #2 · answered by boricua chick 2 · 0⤊ 0⤋