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.
Help me please i'm almost crazy of thinking.. thanks a lot T_T
2007-03-07 03:54:48 · 5 answers · asked by Chris 2 in Science & Mathematics ➔ Physics
Why don't you pick another profession? Something a bit simpler, like basket weaving. You just aren't bright enough to perform the one you are trying to do now. Don't blame it on your professors... you either have the ability to learn the subject matter... on your own if necessary... or you don't. And you don't!!
2007-03-07 04:02:29 · answer #1 · answered by Anonymous · 0⤊ 0⤋
Ok I am not quite sure what you mean by 'making a concept of the system', but I can only assume you meant modelling. Well I have some ideas. Hopefully they may help.
1)The elevator UP and DOWN switch will have to be connected to a relay and then to the motor. This is the only way for a 3 position switch to operate the motor.
2) You could put an Electrical limit switch at the top and bottom of travel. These should be connected to some sort of power cut out on the motor.
3) The only idea I could come up with is to let the limit switch activate some sort of brake, which will be disengaged when you press to bring the elevator down.
2007-03-07 13:13:31 · answer #2 · answered by Anonymous · 0⤊ 0⤋
I don't know, but next time, start your project earlier.
2007-03-07 11:58:03 · answer #3 · answered by Anonymous · 0⤊ 0⤋
Procrastination is opportunity's assassin. ~Victor Kiam
2007-03-07 12:00:51 · answer #4 · answered by ashalarocks 2 · 0⤊ 0⤋
check out this site.
http://science.howstuffworks.com/elevator.htm
2007-03-07 12:04:38 · answer #5 · answered by Anonymous · 0⤊ 0⤋