Am currently starting a project on an automatic sliding door system (for my btec), you know like you find at the shop's, can anyone out there throw any info my way or suggest companies/websites where i can get some technical data ie wiring diagrams componant listngs and health and safety issues.

My initially idea is to use a motion detector (like on a security light) either side of the door to open

or an infrared beam to detect motion

then a pressure sensor or bimetalic strip on the door edge to avoid the door closing on someone.

The door must remain open for 10 seconds and open/close between 4-6 seconds

Any help will be much appreciated cos i can't find squat on the net at the mo

Cheers Seb