Patent ID: 6125306
Filing Date: 2000-09-26
Classification: G05B,G06Q,Y02P

Abstract:
A system for controlling physical distribution pallets used for transportation of freight in wide area physical distribution, comprising:a wireless tag mounted on each pallet,said wireless tag storing pallet control information of the pallet and operable for transmitting said pallet control information in wireless by generating radio wave energy in response to receipt of external radio waves generated externally thereof;wireless detecting means installed at each of a plurality of physical distribution bases for transmitting said external radio waves to said wireless tag and for detecting pallet control information transmitted from the wireless tag mounted on each pallet arriving at or departing from a respective physical distribution base;stock data storage means for receiving and storing the pallet control information detected by said wireless detecting means via a wide area communication network; andpallet status judging means for judging whether a pallet identified by data stored in said stock data storage means is empty or not based on the pallet control information of said pallet.