Hello,
i have come up with this kind of thing:
I have a staircase in a detached house to the upstairs from the ground floor and to the basement. I wanted to do a motion detector control for the upstairs lighting. I was also thinking of using a PLC.
I would like the illumination to switch on after a "violation" of the proximity zone to the stairs on the ground floor or ground floor, and to switch off by itself after a signal from a second detector that the person entering/exiting the stairs has left. I would not like to set the illumination to a fixed time delay to eliminate the possibility of the illumination switching off while I am stopped on the stairs for some time.
In addition, I would like the lighting to flash when someone tries to go downstairs with the alram zone downstairs armed - as a reminder to go back to the alarm keypad.
Anyway, the matter of automation of operation is a secondary issue - I will always come up with something.
The problem lies in the selection of detectors and I am asking for your help here. They would have to be curtain detectors with a fairly narrow spectrum of operation. When mounted on the ceiling, they would have to react to movement only over the width of the stairs (approx. 1m) and in the area directly in front of them (approx. 30cm) so as not to switch on the lighting when someone wants to access the stairs next door leading to the basement or the room whose entrance is just before the stairs.
Mounting on the wall because of the adjacent flight of stairs downwards is also out of the question in my opinion.
There is a similar situation upstairs, where very close to the stairs is the entrance to one of the rooms. The staircase is of the open type (tick rails) so I don't see any use for infrared barriers, unless they are recessed into the wooden handrail post.
i have come up with this kind of thing:
I have a staircase in a detached house to the upstairs from the ground floor and to the basement. I wanted to do a motion detector control for the upstairs lighting. I was also thinking of using a PLC.
I would like the illumination to switch on after a "violation" of the proximity zone to the stairs on the ground floor or ground floor, and to switch off by itself after a signal from a second detector that the person entering/exiting the stairs has left. I would not like to set the illumination to a fixed time delay to eliminate the possibility of the illumination switching off while I am stopped on the stairs for some time.
In addition, I would like the lighting to flash when someone tries to go downstairs with the alram zone downstairs armed - as a reminder to go back to the alarm keypad.
Anyway, the matter of automation of operation is a secondary issue - I will always come up with something.
The problem lies in the selection of detectors and I am asking for your help here. They would have to be curtain detectors with a fairly narrow spectrum of operation. When mounted on the ceiling, they would have to react to movement only over the width of the stairs (approx. 1m) and in the area directly in front of them (approx. 30cm) so as not to switch on the lighting when someone wants to access the stairs next door leading to the basement or the room whose entrance is just before the stairs.
Mounting on the wall because of the adjacent flight of stairs downwards is also out of the question in my opinion.
There is a similar situation upstairs, where very close to the stairs is the entrance to one of the rooms. The staircase is of the open type (tick rails) so I don't see any use for infrared barriers, unless they are recessed into the wooden handrail post.
