US Patent 7260438 Intelligent shelving system

An intelligent shelving system uses touch sensors to operate power-operated, adjustable shelves. Touch sensors also are used as limit switches to control shelf motion, to monitor the encroachment of shelved items on shelves, to detect spills, and to control other related devices and functions, such as shelf lighting. Display units are provided to provide information relating to objects stored in the shelving system and to the operation of the shelving system.