Hello everybody,

My question is related to elevators. We usually see illuminated push switches for calling an elevator car or selecting a floor. But I could not find any data regarding how they work or how to connect these switches to circuit that will show similar behavior, i.e., it will remain illuminated untill the car arrives on the intended floor.

Someone please provide me the data regarding most common type of such switches for elevator controller application, so that I can understand how many pins are there on such push switch and how these pins are labeled etc.

 

Contact the manufacturer.

 

Most of them use microcontrollers for simple wiring and added features. They can be simulated with shift registers or Decimal to BCD and vice versa chips. which transfer the position over very few wires using MUX and DEMUX methods. I'm not sure, but just an idea.

AN example

http://tams-www.informatik.uni-hamb...demos/95-dpi/pic16f84-elevator5/elevator.html

 

The common illuminated elevator pushbutton switch has 4 terminals, two for the SPST (single-pole/single-throw), N.O. (normally open) switch contacts and two for the lamp (or LED). The arrangement and markings of the terminals would depend entirely on the manufacturer.

The control of the elevator is entirely by the circuitry attached to the switch and lamp, not by the switch and lamp themselves. They are only an input (switch) and output (lamp) devices.

The circuitry can be fairly simple electromechanical relays and switches (manual operation and no safety features) or very complex under computer control with algorithms about traffic patterns and current usage.

Is this the start of a school project?

Ken

 

Thanks for your prompt responses.

I got the ideas I needed from your answers. Actually, this is not a school project; yes I found some projects on elevator on this site and elsewhere, but these could not answer my questions.

Ken, thanks for your descriptive answer that gave me the hint I needed;
thanks jj_alukkas for your link and finally
mik3, thank you for your advice.

-efarook