ITEM MANAGEMENT SYSTEM, ITEM MANAGEMENT METHOD, AND ITEM DETECTION INSTRUMENT

원문 (중국어)

An item management system that detects presence or absence of an item includes: a swing member that is swingable, around a predetermined axis, between a first position and a second position, the swing member being located at the first position when the item is absent on a reference surface, the swing member being located at the second position when the item is present on the reference surface; a torque generation member that generates torque of swinging the swing member from the second position toward the first position; a communication device; a sheet-shaped radio wave shield member configured to shield a radio wave emitted from the communication device; a wireless device; and a control device that acquires a result of whether the wireless device is able to communicate with the communication device, and determines, based on the result, whether the item is present on the reference surface.