A method of intelligent channel system based on RFID long-distance reading

A long-distance and intelligent technology, which is applied in the direction of instruments, induction record carriers, electromagnetic radiation induction, etc., can solve the problems of reading and writing blind spots and uneven distribution, and achieve the effect of enhancing coverage, increasing the number of antennas, and reducing identification blind spots

Active Publication Date: 2019-01-04
HENG DONG INFORMATION TECH WUXI CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] Since the electromagnetic field of the loop antenna is unevenly distributed in its vicinity, there will be a blind area for reading and writing

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] An intelligent channel system based on RFID remote reading, which consists of the following components: base, first side wall, second side wall, top wall, external power supply, regulated power supply, industrial computer, first radio frequency chip, second RF chip, adjustable power amplifier, USB interface, first transmitting antenna, second transmitting antenna, first receiving antenna, second receiving antenna, tee, data security transmission module, information comparison storage module.

[0040] There is a gap under the base, which can be used for cables to pass through.

[0041] The first side wall and the second side wall are respectively arranged on both sides of the intelligent channel system, the distance between them is 70-90 cm, and the tops of the first side wall and the second side wall are provided with Through the threading hole, the first transmitting antenna and the second transmitting antenna are respectively installed in the middle part of the wall b...

Embodiment 2

[0056] The difference between this embodiment and embodiment 1 is:

[0057] The high-frequency filter circuit is an EMC high-frequency filter circuit, the purpose of which is to reduce interference on the signal line. The radio frequency chips, that is, the antenna pins of the first radio frequency chip and the second radio frequency chip and the reference voltage pass through the EMC filter circuit first, and then are connected to the antenna matching circuit.

[0058] The size of the RFID antenna is 82×62cm.

[0059] The material of the side wall is 4mm epoxy resin. According to the test results of the side wall material, the closer the impedance is to 50Ω and the closer the frequency is to 13.56MHz, the better the performance. As can be seen from the test results shown in Table 1, the frequency of 4mm epoxy resin is 13.562MHz, and the impedance is 50.2Ω; that is, the frequency error is 2kHz, and the impedance error is 0.4%. The performance is very superior.

[0060] Tabl...

Embodiment 3

[0063] A method for an intelligent channel system based on RFID long-distance reading, specifically the process method for reading an ID card:

[0064] The MCU of the industrial computer sends instructions to the ID card module of the PC / host computer through the UART interface of the universal asynchronous transceiver transmitter, and the ID card module of the PC / host computer transmits data content TYPE BTX packets to the MCU of the industrial computer through the I2C interface , the MCU of the industrial computer sends the TYPE B TX packet to the first radio frequency chip through the serial peripheral interface SPI, and the first radio frequency chip sends the TYPE B TX packet to the power amplifier, and the power amplifier amplifies the signal, And sent to the ID card through the transmitting antenna, the ID card responds to the TYPE B RX packet to the first receiving antenna and / or the second receiving antenna with RX signal monitoring function, the first receiving antenn...

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PUM

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Abstract

The invention discloses an intelligent channel system based on RFID (Radio Frequency Identification) remote read. The system mainly comprises an industrial personal computer, a first radio frequency chip, a second radio frequency chip, an adjustable power amplifier, a first transmitting antenna, a second transmitting antenna, a first receiving antenna and a second receiving antenna. According to the system, an RFID card can be read at a distance of 0-70cm through high-power and large-size antennas; the general application distance is broken through; and a new application scene is produced. Through multi-antenna arrangement and antenna layout and a data segmentation filtering algorithm, a coverage effect is enhanced, identification dead zones are reduced, and a mutual interference problem is solved. An identification rate of an electronic label reaches greater than 99.99% in field application, and the system and the method have wide application prospect in the field of the internet of things.

Description

technical field [0001] The invention relates to a method for an intelligent channel system, in particular to a method for an intelligent channel system based on RFID long-distance and non-contact reading. Background technique [0002] Radio Frequency Identification (RFID) is a wireless automatic identification technology realized by radio frequency communication. It uses the spatial coupling of radio frequency signals to transmit non-contact information, and identifies objects through the transmitted information. In the case that there is no mechanical or optical contact between the identification system and the specific target and the specific target is passive (that is, there is no power supply in the RFID tag), the purpose of specific target identification is achieved. A typical RFID system generally consists of RFID tags, readers, antennas, and computer systems. Its outstanding advantages are strong environmental adaptability, ability to penetrate non-metallic material...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06K7/10
CPCG06K7/10059G06K7/10089
Inventor 周兴佳
Owner HENG DONG INFORMATION TECH WUXI CO LTD
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