small project to study

[Micro]

I'm honored to find this forum that i have a hope to get some help from you all to resolve this Problem .
it will be a plaisir to read your opinions and solutions with which I can begin to study this project

A- Safe access to the roof of the machine.

( * ) Security of access to the roof of the machine is determined by the break electrical continuity on the part of the catenary of the above machine.
Description of current mechanism : To achieve condition (* ), it was a combination of security :
1- unlock switch.
2 - actuating disconnector
3 - locking in the open position of the disconnector and the removal key (Vs ) .
4 - dévrouillage the access door to the roof of the machine ( key [ Vs ] ) .
5 - Buckle of the roof access door by the key (Vp) .
The key (Vp) is inaccessible.
6 - withdrawal (Vp) .
Visual verification 7 - opening blade switch.
8 - mounted to the roof is secured by the presence of the key ( Vp) in his pocket.
Objective: To recall the technician visual verification of blade opening the disconnector.
How : to ensure good visual inspection of the blade opening of the switch, an audible signal will be activated from the lock of the door opening action roof position. This signal will be eliminated after his acquittal by the technician after visual inspection .
Technical Approach : In parallel with step 5 a push button , powered by the open door command a sound signal, which will be eliminated by the technician after his acquittal at the completion of step 7 .

B- Security parking electric machine in the station visit.

Current status : The train stop before the ''dead-end'' is appreciated by viewing the driver.
Objective: The precise machine stop centered on the pit so that technicians can descend from two sides.

C- Automatic lighting of the station visit.

Current status : The lighting is done by manual operation technician .
Objective: to automatic lighting condition by entering the machine (for économisassion energy )

 

[Ian]

You've not given us much information to work from here, what is it that you need help with? Is this a homework/assignment task that you have been given?

 

[Micro]

You've not given us much information to work from here, what is it that you need help with? Is this a homework/assignment task that you have been given?

A-
This is the project I have to study in training I've done in at railway company.
the problem is in a maitenance station of an electric machine .
the catenary contains 3000v must cut when a maintenance technien of pantograph opens a door access by stairs to reach the roof of the machine.

but the disconnect that cuts power of 3000v mechanically by a lever must be visually checked before riding to staircase, that is, they want a safety recall as the door is opened, a sound or siren must lights to remind the technician to check if the switch is really cut

B-
inside of maintenance station , the parking of electric machine 1 meter before dead end which determines the end of the rail. But lately, one of the driver did not do his good braking and it shocked the dead-end, which was an accident.


usually, the stopping of electric machine before the dead-end is appreciated by viewing the driver.
Objective: Stop the machine centered on the pit so that technicians can descend from two sides .

C-
lighting of 3 pits for parking machines where it is done manually by a push button,

on the pit is inside of maintenance station where the A and B problems have to be solved .

the other two pits are out of the air station.

control this lighting manually cause alot of energy losses due to forgetfulness of workers throughout the day!

they want to conserve energy by the fact of presence of the machine on pit , the lighting turns on automatically and turn off in its abcence .

i hope that i clarified this project for you , as considering my first language is not english , anything else to explain , i'm here

 

[nges]

for A- you can connect a switch that grounds or cuts the suppy of the 3000v(you could have a double switch triggering at the same. one to cut the supply and the other to the alarm or whatsoever signalisation you might want). thats it for now

you can also bring out a synoptic diagram of your description that can easily permit you to design you system in different blocks and at the end you just need to do an assembly