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Electronic label reading method

A technology of electronic tags and tag data, which is applied in the field of radio frequency communication and electronic tag identification, can solve the problems of limited reading distance of the reader, influence on the application of the reader, and high power of the radio frequency signal, and achieve high reading efficiency, good anti-collision performance, The effect of low transmission power

Inactive Publication Date: 2005-02-23
上海轶龙应用软件开发有限公司
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AI Technical Summary

Problems solved by technology

Therefore background technology has following shortcoming: (1) the reader that works by above-mentioned reading method can only read a piece of passive electronic tag once, and reading efficiency is low
(2) The reading distance of the reader working according to the above reading method is limited, which seriously affects the application of the reader
(3) The reader working according to the above reading method needs to supply power to the passive electronic tag, and the output radio frequency signal has a large power, which will cause interference to nearby communication equipment and TV sets when working

Method used

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Embodiment Construction

[0025] Now illustrate working principle of the present invention in conjunction with accompanying drawing.

[0026] The reader working according to the reading method of the present invention works in the 2.4 GHz band. The transmitter of the first wireless data transceiving module 101 is set to work in a channel of the 2.4GHz band, such as CH0. The two receivers of the first wireless data transceiving module 101 are respectively set to work in two channels of the 2.4GHz band, such as CH1 and CH2. The transmitter of the second wireless data transceiving module 102 is set not to work. The two receivers of the second wireless data transceiving module 102 are respectively set to work in two channels of the 2.4GHz band, such as CH3 and CH4.

[0027] When working, the reader working according to the reading method of the present invention is connected with the host computer through the interface circuit.

[0028] Now take the reading of four electronic tags by the reader working ...

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Abstract

A method for reading an electronic countermark includes emitting inquiry signal by one of two radio transceiving modules, receiving response signal with four channels of CH1, CH2, CH3 and CH4 on four receivers starting up timer to emit one of four response signals, receiving response signal by one of four receivers to store countermark data in storage of monolithic computer, storing countermark data in storage to storage of upper level computer.

Description

technical field [0001] The invention relates to an electronic label reading method, which belongs to the technical field of radio frequency communication and electronic label identification. Background technique [0002] The U.S. Patent No. and title of invention are respectively US6172609 and ' Readdr for RFIDSystem (reader for RFID system) ' discloses a kind of electronic tag reader. The reader is specially used to read passive electronic tags, that is, electronic tags that do not contain a power supply inside. The reader contains a coil, a driver, a signal analysis circuit and a memory. The driver drives the coil at regular intervals. While the coil is being driven, a radio frequency magnetic field is formed around the coil. When the passive electronic tag is located in the radio frequency magnetic field, a radio frequency induced voltage is generated in the coil of the tag, and the voltage is rectified and filtered to supply power to the tag. Th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06K7/00
Inventor 秦忠陈兵黄朝美马钧
Owner 上海轶龙应用软件开发有限公司
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