MONITORING METHOD FOR OBJECT OPEN/CLOSE WITH ELECTRONIC SEAL AND SYSTEM USING THE SAME

摘要

PURPOSE: A facility opening and closing monitoring method by an electronic seal and a system thereof are provided to minimize power consumption. CONSTITUTION: An RFID reader (140) reads an ID included in an RFID tag (120) to deliver it to a control unit (170). If the RFID reader is near the RFID tag, reading is possible. Otherwise reading is impossible. The control unit senses an electronic sealing state based on a reading result of the reader. The control unit delivers the electronic sealing state to a relay device through a communication unit (180). The control unit controls the reading operation of the RFID tag by controlling the power supply of a power supply unit (160) to the reader based on a switching state of a contact switch (150). [Reference numerals] (120) RFID tag; (140) RFID reader; (150) Contact switch; (160) Power supply unit; (170) Control unit; (180) Communication unit; (AA) Variable distance