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
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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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