WIRELESS LOCATING AND TRACKING SYSTEMS

摘要

A locating and tracking system (10) is provided in which the assets desired to be located and tracked are associated with either radio frequency (RF) tags (40) or radio frequency identification and radio frequency data communication (RFID/RFDC) devices (30). Depending on which device is attached to the asset, the other device is located at known locations. The RFID/RFDC devices (30) interrogate and receive signals from the RF tags (40). The received information is sent to a host computer (20). With the location of either the RF tags (40) or RFID/RFDC devices (30) known, the assets may be located and tracked. An RF tag antenna design is also provided by using a switching mechanism connected to at least two antennas.