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Method for synchronous awakening communication of active RFID (Radio Frequency Identification Devices) system

A communication method and information communication technology, which is applied in the field of low power consumption synchronous wake-up and frequency hopping, can solve problems such as power consumption sensitivity, achieve low power consumption, and avoid fixed interference effects

Inactive Publication Date: 2012-11-28
阿艾夫技术有限公司
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AI Technical Summary

Problems solved by technology

[0004] Active RFID is very sensitive to power consumption because it is powered by batteries. At present, it usually uses the working mode of normal sleep and timing wake-up to reduce power consumption. However, when the electronic tags and readers of active RFID work in this mode, to the synchronization problem of both

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  • Method for synchronous awakening communication of active RFID (Radio Frequency Identification Devices) system
  • Method for synchronous awakening communication of active RFID (Radio Frequency Identification Devices) system
  • Method for synchronous awakening communication of active RFID (Radio Frequency Identification Devices) system

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Embodiment Construction

[0047] Further details will be given below in conjunction with the embodiments shown in the accompanying drawings.

[0048] The present invention is based on active RFID systems such as figure 1 As shown, the active RFID system includes an RFID card reader 2 and an RFID electronic tag 1 . The RFID electronic tag 1 is carried by the user, and the RFID card reader 2 is used to track items. The electronic tag 1 includes a tag micro-controller MCU11, a tag radio frequency module 12 and a tag alarm module 13 electrically connected to the tag micro-controller MCU 11, and a tag micro-controller MCU11, a tag radio frequency module 12 and a tag alarm module. 13 A tag power supply module that provides electric energy. Described card reader 2 comprises card-reading micro-controller MCU21, is electrically connected the tag radio frequency module 22 of this card-reading micro-controller MCU21 and the card-reading alarm module 23, and is described card-reading micro-controller MCU 21, car...

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Abstract

The invention provides a method for synchronous awakening communication of an active RFID (Radio Frequency Identification Devices) system. After a system is electrified, an active RFID card reader works at a receiving state and an active RFID electronic tag sends information to the card reader; and after the card reader receives the information, a replaying signal is sent to the electronic tag and two parties take the moment as a time initial point to enter synchronization. A timed synchronous awakening method, a synchronous calibration process and a synchronous frequency hopping process are added into a synchronous awakening process. The RFID electronic tag and the RFID card reader are successfully communicated for the first time to obtain a time synchronous signal and subsequent communication is awakened according to set time so as to realize that the RFID electronic tag and the RFID card reader are synchronously awakened and the power consumption is lower; furthermore, a clock signal is used as one part of communication and clocks of the two parties are used for realizing synchronous calibration; and the method utilizes a synchronous frequency hopping mechanism to avoid fixed interference.

Description

technical field [0001] The invention relates to a synchronization method of wireless communication, in particular to a low power consumption synchronization wake-up and frequency hopping method based on an active RFID electronic tag and a reader-writer. Background technique [0002] RFID is the abbreviation of radio frequency identification (Radio Frequency Identification), which uses radio technology to establish communication between readers and electronic tags to achieve information query, identity confirmation, and conditional retrieval. [0003] According to different implementation methods, RFID can be divided into two categories: active RFID systems and passive RFID systems. There is no battery on the passive RFID electronic tag, and all the power required for its work is obtained by converting the received electromagnetic waves sent by the reader, so the transmitting power of the reader is generally large. On the contrary, the active RFID electronic tag has its ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06K7/00G06K17/00
Inventor 连厚伟杨田荣
Owner 阿艾夫技术有限公司
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