EXIT DETECTION SYSTEM WITH COMPENSATION

摘要

A person support apparatus, such as a bed, stretcher, cot, recliner, or the like, includes an exit detection system having a plurality of force sensors that support the weight of an occupant positioned on a support surface. The force sensors are part of an exit detection system that issues an alarm when the occupant exits, or is about to exit, the person support apparatus. The distribution of weight applied to the force sensors is used to determine if the occupant is about to exit the person support apparatus. Compensation is made to the exit detection system for changes in the weight distribution that are not caused by movement of the occupant. Such changes may be due to siderail movement, support surface pivoting, and/or movement of other components of the person support apparatus.

主权项

1. A person support apparatus comprising:
a support deck adapted to support thereon an occupant of the person support apparatus, the support deck comprising a first section and a second section, the first section being pivotable with respect to the second section about a generally horizontal pivot axis; a plurality of force sensors adapted to detect a load, the load including the support deck and the occupant when the occupant is supported on the support deck; an angle sensor adapted to determine an angle of the first section with respect to a reference; and a controller adapted to issue an alert if outputs from the plurality of force sensors meet at least one criterion, the controller taking into account the angle when determining whether to issue the alert or not.