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Active RFID system and method integrating frequency diversity and space diversity

A technology of space diversity and frequency diversity, which is applied in the field of active RFID systems and can solve problems such as interference with 2.4G wireless transmission and interference

Active Publication Date: 2015-10-14
上海真灼科技股份有限公司
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Problems solved by technology

[0003] In order to overcome the defects of the prior art, the present invention discloses an active RFID system and method integrating frequency diversity and space diversity, which solves the interference of different wireless devices in the space and the 2.4G wireless transmission in the case of environmental changes. interference problem

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  • Active RFID system and method integrating frequency diversity and space diversity
  • Active RFID system and method integrating frequency diversity and space diversity
  • Active RFID system and method integrating frequency diversity and space diversity

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Embodiment Construction

[0047] The present invention will be further described below in conjunction with accompanying drawing and specific embodiment:

[0048] Such as figure 1 , an active RFID system 500 integrating frequency diversity and space diversity, comprising: an RF radio frequency module and a processor 3, and the processor 3 is connected to the RF radio frequency module through a serial port. Among them, the RF radio frequency module further includes: n RFID tags 1 (tag 1, ..., tag n), reading head 2; the reading head 2 further includes m receivers 21 (receiver 1, ..., receiver m) . Wherein, both m and n are positive integers greater than or equal to 1. m and n need not be equal.

[0049] Each receiver 21 is correspondingly connected to at least one antenna 22 . If each receiver is connected to more than two antennas, the working frequency bands of the antennas do not overlap. Each individual antenna and its associated receiver form a link for receiving information. In this embodimen...

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Abstract

The invention discloses an active RFID (radio frequency identification) method with frequency diversity and space diversity integrated. The method includes the steps: S1, setting up an active RFID system with frequency diversity and space diversity integrated, wherein the system comprises an RF (radio frequency) module and a processor connected with the RF module, the RF module comprises a plurality of RFID labels and a read head, the read head comprises a plurality of receivers, and each receiver is connected with at least one antenna correspondingly; S2, adopting a pseudo random sequence for each RFID label to divide transmitting frequency points into a plurality of channels, and using different channels for transmitting label data at different time slots; S3, using each independent antenna and receiver to receive RFID label data from corresponding frequency band of the antenna, and using the receivers to transmit the data to the processor; and S4, analyzing and processing the obtained RFID label data by the processor. The method further includes step that the processor analyzes data from different receivers, rejects identical RFID label data by means of comparative screening, and finally packages entire data to send the data to a server through an RS485 bus.

Description

technical field [0001] The invention relates to RFID technology, in particular to an active RFID system and method integrating frequency diversity and space diversity. Background technique [0002] At present, the 2.4G ISA frequency band belongs to the public frequency band. In this frequency band, due to the large number of wireless network devices in the same area, it is easy to be interfered by different devices; Due to the influence of various factors, there will be a probability that the receiver will read the 2.4G RFID tag data incorrectly and cannot read the tag data. Contents of the invention [0003] In order to overcome the defects of the prior art, the present invention discloses an active RFID system and method integrating frequency diversity and space diversity, which solves the interference of different wireless devices in the space and the 2.4G wireless transmission in the case of environmental changes. interference problem. [0004] Implementation method ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L27/26G06K7/00
Inventor 周谋国
Owner 上海真灼科技股份有限公司
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