Pages: [1]   Go Down
Author Topic: RFID doorway or other detection method  (Read 1100 times)
0 Members and 1 Guest are viewing this topic.
UK
Offline Offline
God Member
*****
Karma: 17
Posts: 568
View Profile
 Bigger Bigger  Smaller Smaller  Reset Reset

Looking for any advice and guidance in my requirements:-

Using 13.56Mhz RFID I need to detect people moving in and out of an area. This needa to be without any active action by the user, i.e they don't have to offer up their tag to a reader antenna.

Initial thoughts are something similar to retailers detectors, but I understand that's expensive.

Is there a way of extending range so that a doorway could be constructed to read? With 1m width that could be antennas either side capable of 50cm range.

The only other idea I had was a 'step' of some sort and have the users attach key fob style tags to boot laces in order to read as they moved across that threshold. Their feet is the only thing I could think of that is at a predictable distance from a reader, and the same regardless of height.

Other thoughts were a break beam type system of IR emitter/receiver, or ultrasound, but I was thinking it may be difficult to detect if groups cross in quick succession. These also don't allow me to identify anyone (player and which team they are on)

Any other ideas and advice would be appreciated.
« Last Edit: October 14, 2012, 04:12:38 am by tack » Logged

Brisbane, Australia
Offline Offline
Edison Member
*
Karma: 33
Posts: 1121
View Profile
 Bigger Bigger  Smaller Smaller  Reset Reset

Hi

Is there any scope in your gate/door for adding a turnstile to enforce one entrant/exit at a time?

Geoff
Logged

"There is no problem so bad you can't make it worse"
- retired astronaut Chris Hadfield

UK
Offline Offline
God Member
*****
Karma: 17
Posts: 568
View Profile
 Bigger Bigger  Smaller Smaller  Reset Reset

That could be a possibility. I also had thoughts along the line of a saloon style door and have the reader antenna in the swing doors.

I'm guessing I'd need to make a DIY antenna of some kind.
Logged

Pages: [1]   Go Up
Jump to: