Method and device for prevention loss of item and prompt search thereof

摘要

An apparatus for preventing loss of an item and quickly searching for the item includes a slave configured to act as a radio frequency identification (RFID) tag having unique identifier information in an internal tag memory; and a hand-held master configured to function as an RFID reader and to permit the change of at least one of a recognition distance and a recognition width, at which the master recognizes the slave. When the distance between a user and an item is out of a predetermined range, a warning such as an alarm or voice signal is provided to the user, so that it is possible to prevent loss of the item. Alternatively, it is possible to quickly search for a misplaced item whenever the user desires it and has misplaced the same.

主权项

1. An apparatus for preventing loss of an item and quickly searching for the item, the apparatus comprising:
a slave configured to perform a function of a radio frequency identification (RFID) tag having unique identifier information in an internal tag memory; and a hand-held master configured to perform a function of an RFID reader and change a recognition distance at which the master recognizes the slave, wherein the master comprises: a user interface unit configured to have an input unit and an output unit; an antenna configured to communicate, by radio, with the slave; a transmission/reception unit connected to the antenna so as to transmit/receive, by radio, data to/from the slave; an alarm and voice output unit configured to output an alarm or voice; an output power adjustment unit configured to adjust an output power of the transmission unit in the transmission/reception unit under a predetermined control; and a control unit configured to register a slave to be registered as a tag for preventing loss of an item and quickly searching for the item in a memory through the user interface unit, when there is a request for setting a range of a recognition area having the recognition distance of the registered slave through the user interface unit, set the requested range of the recognition area in the memory, when an outgoing mode is operated through the user interface unit, continuously perform, by radio, recognition communication between the master and the registered slave in the range of the recognition area through the output power adjustment unit, when the distance between the master and the registered slave is out of the range of the recognition area, provide an alarm and voice through the alarm and voice output unit of the master, and when a searching mode is operated through the user interface unit, output a detection volume generated by the level of a recognized electric field intensity of the registered slave and provide a voice through the alarm and voice output unit by trying recognition communication between the master and the registered slave in the set range of the recognition area.