Radio frequency identification book management security gate

Abstract

An RFID book management security gate is provided so as to control and inspect at an exit of a library. An omni-directional antenna and a directional antenna are both disposed inside the RFID book management security gate, in which the omni-directional antenna can broaden a detection angle and reduce leaky wave of an electromagnetic wave in the library; and the directional antenna strengthens the detection of the case that a book or reference material is grasped, carried under the arm or attached to the body, so as to achieve an objective of effective and security management for the book or reference material. When a user carries the reserved book or reference material through the security gate, an RFID tag on the book or reference material can be effectively detected, which can avoid that the book or reference material without a borrowing procedure is furtively taken away. Moreover, the leaky wave of the electromagnetic wave to the surrounding is decreased, and misjudgement for books still in the library is reduced. Furthermore, in combination with a human body sensor, the power consumption is reduced, the correctness of system function is improved, and it is convenient for automatically performing effective management operation of security control for the book or reference material.

Description

Technical field [0001] The invention relates to a book anti-theft management system, in particular to a radio frequency identification book management security door. [0002] Detect Background technique [0003] The radio frequency identification system (Radio Frequency IDentification, RFID) mainly includes an RFID tag (Tag), an RFID reader and an application system. Among them, the operating frequencies used by RFID include low frequency (LF, usually 134KHz), high frequency (HF, usually 13.56MHz), ultra-high frequency (Ultra-High Frequency, UHF, usually 860~ 960MHz), and microwave (Microwave, usually 2.4GHz), etc. Passive RFID tags do not contain batteries, and their internal analog circuits convert electromagnetic waves from the reader into electrical energy. The RFID tag has a memory to store data. According to the design and process, it can be divided into read only, single write and multiple read or repeatable read and write styles. Generally, commercially available high-f...

AI Technical Summary

Problems solved by technology

Because it is an omnidirectional antenna, the detection angle is wide, but the energy is less concentrated, the sensing distance is shorter, and it is difficult to detect when the books and materials are surrounded, caught under the armpit or close to the body

[0009] The existing radio frequency identification book management safety gate is equipped with a photoelectric sensor for counting the number of people passing through the safety gate; under normal normal operation conditions, the radio frequency identification reader of the radio frequency identification book management safety gate constantly switches antennas for detection; but When no one is near the security door, but the RFID reader is constantly detecting, resulting in unnecessary consumption of energy

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