I have a long hallway and I am trying to figure out a way to determine is a person is leaving a room to go down the hallway, or if they are coming down the hallway to enter a room. I am sure I need to use motion sensors but I think I need something very precise. In my mind I am thinking laser beams at each end of the hallway. I have an ELK system with Homeseer.
Coming or Going
- Thread starter dsabot
- Start date
damage
Senior Member
2 sensors aren't enough. if one person enters one end and someone else enters the other end a little later you end up getting false readings.
Rupp
Senior Member
How about using the pressure mats at each end of the hallway?
http://board.homeseer.com/showthread.php?t...t=pressure+mats
http://board.homeseer.com/showthread.php?t...t=pressure+mats
damage
Senior Member
same problem. i think you would need several sensors, spaced not too far apart, along the length of the hallway so you can establish the direction of travel, not just at the ends.
mustangcoupe
Senior Member
maybe 2 laser sensors at each end of the hallway and see which one is tripped first... A before B is one direction
drozwood90
Senior Member
strange enough...I thought about this.
I was trying to figure out occupancy...
The BEST way to do this would be put a laser type of sensor (not a laser as they wear out) one at the "hall" side and one at the "room" side of a door's door jam. Then you need a way of reading them in mS response. This works well for rooms, but it's a LOT of hardware and install...it does not work well for rooms with double doors (people can come and go at the same time.
Basically then each room would be able to maintain a "contains" number to be used in lighting logic (if contains is positive, allow light rules to work, otherwise turn lights off, unless some other logic triggered "room occupancy").
So...I gave up on that and have been trying to come up with better ways to do this (potentially a motion sensor on the ceiling just inside the room door and just outside looking down...so it only sees a small area... the problem with this is extra logic is necessary to determine if it's someone walking down the hall, or someone walking into a room.
--Dan
I was trying to figure out occupancy...
The BEST way to do this would be put a laser type of sensor (not a laser as they wear out) one at the "hall" side and one at the "room" side of a door's door jam. Then you need a way of reading them in mS response. This works well for rooms, but it's a LOT of hardware and install...it does not work well for rooms with double doors (people can come and go at the same time.
Basically then each room would be able to maintain a "contains" number to be used in lighting logic (if contains is positive, allow light rules to work, otherwise turn lights off, unless some other logic triggered "room occupancy").
So...I gave up on that and have been trying to come up with better ways to do this (potentially a motion sensor on the ceiling just inside the room door and just outside looking down...so it only sees a small area... the problem with this is extra logic is necessary to determine if it's someone walking down the hall, or someone walking into a room.
--Dan
What about a distance sensor on the end wall facing down the hallway?
There's a post somewhere on here about using them to measure the depth of the salt in a water softener and integrating it with the ELK. They are ultrasonic I believe, so they might not work so hot on clothing. You may have to have everyone walk around naked. At $50 or so, it might be worth a try.
There's a post somewhere on here about using them to measure the depth of the salt in a water softener and integrating it with the ELK. They are ultrasonic I believe, so they might not work so hot on clothing. You may have to have everyone walk around naked. At $50 or so, it might be worth a try.
icellama21
Active Member
If you have a somewhat flexible floor(not concrete) and access beneath, look into pulsors. They act like pressure mats, but go under the floor so you don't need to have a carpet. Just don't count on reliable detection. First party you throw, people milling about, the system will go crazy.
http://www.automatedoutlet.com/Home/Pulsor-Sensors
http://www.automatedoutlet.com/Home/Pulsor-Sensors
