02 Technological Breakthrough: Electromagnetic Field Reconstruction & Anti-Metal Interference Algorithms

To overcome RFID barriers, Sico independently developed a new generation of precise tag identification systems – RFID tunnel readers. This system effectively tackles misreads, missed reads, and cross-reads through electromagnetic field reconstruction and dynamic anti-metal interference algorithms.

In electromagnetic field reconstruction, Sico employs a dual technical approach:

1. Physical Isolation – Faraday Cage Structure: The tunnel reader uses a welded cavity made of ≥1.2mm cold-rolled steel plates, combined with specialized shielding curtains. When the curtain closes rapidly via PLC within 3 seconds, it forms a highly enclosed electromagnetic space. Testing shows external signal attenuation up to 40dB, effectively creating an electromagnetic "vacuum zone" and completely eliminating misreads.

2. Energy Focusing – Beam-Forming Antennas: Inside the tunnel reader, an eight-channel reader driven by powerful UHF modules based on R2000 chips is used. Advanced beam-forming technology highly concentrates RF energy within the limited internal space, significantly boosting signal strength in the target area.

Addressing missed reads caused by metal environments, Sico developed dynamic anti-metal interference algorithms:

· Spectrum Avoidance Technology uses a frequency-hopping anti-collision protocol: intelligently switching between 16 working frequency points (840-960MHz) within 200ms to actively avoid "dead frequencies" severely interfered with or absorbed by the metal environment.

· Signal Penetration Enhancement utilizes dielectric ceramic antennas: Custom ceramic antennas with a dielectric constant (εr) of 9.6 offer a gain increase of 4.2dBi compared to standard PCB antennas, significantly enhancing RFID signal penetration and reading sensitivity.