20130186000 | System for Presence Detection in a Door Assembly - Embodiments of the invention are directed to a system of presence detection in a door assembly for the prevention of patient/detainee suicide, comprising: a door frame, wherein the door frame defines an opening; a door mounted in said opening, wherein the door is allowed to operate from open to closed position with respect to the door frame; a presence sensing arrangement, which allows detection of the presence of an object near the surfaces of the door, door frame, and the upper and lower surfaces of the door or door frame from open to closed position. Placement of presence sensors on the upper or lower surfaces of the door allows presence detection when a patient/detainee attempts to drape a ligature object across or underneath said surfaces. A control system may monitor the system, and can activate an alarm system for early detection and prevention. | 07-25-2013 |