Active RFID (Radio Frequency Identification Device) low power consumption period awakening method

Abstract

The invention relates to an active RFID (Radio Frequency Identification Device) low power consumption period awakening method. According to the method disclosed by the invention, the power consumption of a label in an active RFID system adopting a period awakening mechanism is reduced through a period awakening signal with timing information. Not only can the working power consumption of the period awakening label be reduced, but also average stand-by power consumption can be reduced, and the service life of the period awakening label is obviously improved.

Description

technical field [0001] The present invention relates to the field of RFID. Background technique [0002] RFID is the abbreviation of radio frequency identification (Radio Frequency Identification), which uses radio technology to establish communication between the reader and the electronic tag to achieve the purpose of information query. Compared with the traditional barcode technology, it has the advantages of high transmission data rate, long communication distance, simultaneous processing of multiple labels, modifiable label information, and strong environmental adaptability. Therefore, it has become a key enabling technology for the Internet of Things and has a wide range of Application prospect. [0003] According to different implementation methods, RFID is divided into passive RFID and active RFID. Passive RFID tags do not have batteries themselves, and the power required for work is obtained from the electromagnetic field of the reader. Active RFID tags have their...

AI Technical Summary

Problems solved by technology

as attached figure 1 As shown, the tag may enter the listening state when the reader starts to send a signal and receive the signal; it may also enter the listening state when the reader sends the last signal and receive the signal. On average, The tag is needlessly in a state of high power consumption and ready to receive valid signals from the reader during the time of (sleep time + listening time) / 2, which increases power consumption

[0008] At the same time, in order to ensure that the reader command can be received, the listening time of the tag must be long enough, at least two complete reader signal times, if the signal supported by the tag in the listening state is not optimized, there are still It may contain some redundant information, which will cause the label to listen for too long, which will affect the increase of the standby power consumption of the label and further affect the life of the label

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