Electronic tag and implementation method thereof
A technology of electronic tags and electromagnetic waves, which is applied to recording carriers used by machines, instruments, computer components, etc., can solve the problems of restricting the use range of RFID electronic tags, and achieve the effect that the maximum distance of reading and writing cannot be changed
Inactive Publication Date: 2012-06-27
SHANGHAI ADVANCED RES INST CHINESE ACADEMY OF SCI
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Problems solved by technology
However, at present, the maximum reading and writing distance of RFID electronic tags is relatively fixed and immutable, which greatly restricts the utilization range of RFID electronic tags. Therefore, it is necessary to propose an improved technical means to achieve RFID tags with variable maximum reading and writing distance
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[0044] The implementation of the present invention is described below through specific examples and in conjunction with the accompanying drawings, and those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. The present invention can also be implemented or applied through other different specific examples, and various modifications and changes can be made to the details in this specification based on different viewpoints and applications without departing from the spirit of the present invention.
[0045] figure 1 and figure 2 It is a structural diagram of an RFID system applied to the first preferred embodiment of an electronic tag of the present invention. The present invention can be applied to existing 900MHz and 2.4GHz frequency band RFID electronic tags, but not limited thereto. Such as figure 1 and figure 2 As shown, the RFID system applied to the electronic tag of the pr...
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The invention discloses an electronic tag and an implementation method thereof. The implementation method includes steps of receiving electromagnetic waves transmitted by a reader by the aid of an antenna; rectifying electromagnetic signals received by the antenna by the aid of an analog radiofrequency circuit module to obtain a direct-current power source required by operation of a circuit in the electronic tag, and demodulating the signals; receiving and processing signals demodulated by the analog radiofrequency circuit module by the aid of a digital circuit module; controlling a reading and writing distance control module according to the received signals by the aid of the digital circuit module so that load current of the electronic tag is consistent to requirements of signals transmitted by the reader. The method realizes the RFID (radio frequency identification) electronic tag with the variable maximum reading and writing distance by means of the reading and writing distance control module, and the problem that the maximum writing and reading distance of an existing RFID electronic tag cannot be changed is well solved.
Description
technical field [0001] The invention relates to an electronic tag and a realization method thereof, in particular to an electronic tag with a variable maximum reading and writing distance and a realization method thereof. Background technique [0002] RFID (Ratio Frequency Identification, radio frequency identification) technology is an important non-contact automatic identification technology. It uses radio frequency signals to realize non-contact two-way data communication through spatial coupling (alternating magnetic field or electromagnetic field), and achieves the purpose of identification through the transmitted information. Compared with traditional automatic identification technology, RFID technology has many advantages, such as non-contact, long-distance, readable and writable, large amount of information, no human interference, etc., in supply chain management, anti-theft system, parking lot control, automatic production line, books Management, animal tracking, a...
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IPC IPC(8): G06K19/07G06K17/00
Inventor 张钊峰梅年松叶显阳
Owner SHANGHAI ADVANCED RES INST CHINESE ACADEMY OF SCI