Passive electronic tag reading and writing system

Abstract

The invention provides a passive electronic tag reading and writing system which is used for monitoring and identifying the moving track of target items within an area to be detected. Passive electronic tags are attached to the target items. The passive electronic tag reading and writing system comprises a plurality of passive electronic tags, a matrix control switch, a card reader and a plurality of array antennas, the card reader and the array antennas are in a one-to-many butt joint relationship, the passive electronic tags are provided with internal antennas and chips, and the internal antennas include short-distance antennas and long-distance antennas. The passive electronic tag reading and writing system is free from complicated wiring and simple to mount.

Description

technical field [0001] The invention relates to the technical field of security inspection, in particular to a passive electronic tag reading and writing system. Background technique [0002] A typical RFID electronic tag mobile monitoring system includes three parts: several passive electronic tags, card readers corresponding to the electronic tags, and a remote computer that processes data. The electronic tag has the ability of intelligent reading and writing and encrypted communication; the reader is composed of a wireless transceiver module, a control module and an interface circuit, and sends a request signal to the electronic tag through a modulated RF channel, and the electronic tag answers the identification information, and the reader sends The signal is sent to a computer or other data processing equipment. In the security inspection system of the airport, readers are usually arranged in a uniform grid in the arrival area of ​​the airport, and video surveillance s...

AI Technical Summary

Problems solved by technology

[0003] The monitoring and identification of the existing electronic tag movement track is to realize the reading and positioning of passive electronic tags through the card reader grid placement, that is, each electronic tag identification area corresponds to a card reader module. The reader module includes an antenna module, a passive electronic tag reading and writing module, an RS485 communication module, and a 5V power supply system. In the process of arranging the card readers in a grid in the airport arrival area, it is necessary to connect the power line and power cord to each grid sub-area. RS485 communication line, each card reader also needs to be installed with a ceramic antenna module, the on-site construction is difficult, the wiring in the grid sub-area is cumbersome and error-prone, the number of card readers is large, the communication requirements for time-sharing response are high, and it is difficult to read in real time The location of passive electronic tags, and the cost is higher

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