Method and system for inhibiting adjacent channel interference of radio frequency identification
A technology of radio frequency identification and adjacent channel interference, which is applied in the field of radio frequency identification, can solve problems such as mutual interference and low identification efficiency of radio frequency identification electronic tags, and achieve the goals of avoiding adjacent channel interference, suppressing the influence of adjacent channel interference, and reducing difficulty and cost Effect
Active Publication Date: 2016-11-23
JIANGSU BELLON TECH
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[0004] The purpose of the present invention is to provide a radio frequency identification adjacent channel interference suppression method and system, which solves the technical problem that adjacent radio frequency identification devices interfere with each other in the prior art, resulting in low identification efficiency of radio frequency identification electronic tags
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[0034] The present invention will be described in detail below in conjunction with various embodiments shown in the drawings. However, these embodiments do not limit the present invention, and any structural, method, or functional changes made by those skilled in the art according to these embodiments are included in the protection scope of the present invention.
[0035] Radio frequency identification technology is a non-contact automatic identification technology. The radio frequency identification device reads and writes the relevant data in the radio frequency identification electronic tag through radio frequency signals. In the vehicle identification management, the remote identification management of the vehicle is carried out through radio frequency identification technology, preferably using passive ultra-high frequency radio frequency identification technology, and the working frequency can be 840MHz-845MHz or 920MHz-925MHz. With the gradual advancement of the draftin...
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The invention provides a method and system for inhibiting the adjacent channel interference of radio frequency identification. The method includes: receiving a first radio frequency antenna triggering instruction, and opening the receiving channel of a first radio frequency antenna to receive a radio frequency signal; monitoring the leaked radio frequency signal RSSI values and occupied channels of radio frequency antennas on the periphery of the first radio frequency antenna; judging whether the radio frequency signal RSSI values are larger than a preset RSSI threshold or not; when the radio frequency signal RSSI values are smaller than the preset RSSI threshold, allocating a specific channel for the first radio frequency antenna to start radio frequency identification; when the radio frequency signal RSSI values are larger than the preset RSSI threshold, determining the working manner of the radio frequency identification of the first radio frequency antenna according to the interaction states in the occupied channels. By the method, influence of the adjacent channel interference of the radio frequency identification is inhibited, and the efficiency and accuracy of the radio frequency identification are guaranteed.
Description
technical field [0001] The invention relates to the technical field of radio frequency identification, in particular to a radio frequency identification adjacent channel interference suppression method and system. Background technique [0002] Radio frequency identification technology is a non-contact automatic identification technology. It sends and receives radio frequency signals through radio frequency identification devices to obtain relevant data in radio frequency identification tags. It is widely used in the fields of the Internet of Things, especially in the field of intelligent transportation. Through radio frequency identification The automatic identification and management of vehicles by technology has gradually become the mainstream development trend. Such as figure 1 As shown, a gantry is set up at a designated position on the road. The gantry is equipped with a radio frequency identification device and a radio frequency antenna matching the number of lanes. E...
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IPC IPC(8): G06K7/10
CPCG06K7/10079G06K7/10356
Inventor 王兵
Owner JIANGSU BELLON TECH