Ultra-long distance microwave electronic marking system

Abstract

The invention relates to a long-distance microwave electric mark system, which comprises a card reader and a tag card, wherein said card reader is formed by power source, stabilizing circuit, card reader control circuit, radio receiving / sending circuit and memory; the control circuit via SPI circuit reads and writes the receiving / sending circuit and the memory; the tag card is formed by power source, control circuit, and radio receiving / sending circuit, while its control circuit via SPI bus reads and writes the radio receiving / sending circuit; the control circuit CPU operates based on manage control software, with combined TDMA instant jump frequency expansion and jump frequency expansion mode; the tag card will enter into dormancy, when sending information one time, to be set into intermission working mode whose dutycycle is over 100; therefore, the invention has low cost, low power consumption and high reliability.

Description

technical field [0001] The invention belongs to the field of electronic information, in particular to an ultra-long-distance microwave electronic identification system for target recognition. Background technique [0002] Microwave electronic identification technology uses radio frequency to conduct non-contact two-way data transmission between the reader and the identification card to achieve the purpose of target identification and data exchange. It is generally composed of an identification card and a reader. The identification card is composed of a coupling element and a chip. The identification card contains an antenna for communication with the radio frequency antenna of the reader. The reader reads the information of the identification card. The function of the antenna is Radio frequency signals are passed between the tag and the reader. An important parameter of the electronic identification system is the reading and writing distance. At present, the long-distance e...

AI Technical Summary

Problems solved by technology

An important parameter of the electronic identification system is the reading and writing distance. At present, the long-distance electronic identification system realized by general technology consumes a lot of power, the battery life is not long enough, the environment adaptability is poor and the price is expensive, and it is difficult to meet the basic application requirements.

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