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UHF Gate Controller

• UHF RFID Reader and Antennas: The gate controller incorporates a UHF RFID reader connected to one or more antennas. These antennas emit radio waves in the UHF frequency band (typically 860-960 MHz).
• RFID Tags: People, vehicles, or items needing access are equipped with UHF RFID tags. These tags contain a microchip that stores data (like a unique ID) and an antenna. Passive UHF tags, which are common in these systems, do not have their own power source; they draw power from the radio waves emitted by the reader.
• Data Exchange: When a tagged item or person enters the read range of the gate's antennas, the RFID tag is energized by the reader's radio waves. The tag then modulates these waves to send its stored data back to the reader.
• Data Processing and Control: The UHF RFID reader receives the tag's data and sends it to a control unit (often an integrated part of the gate system or a separate access controller). This control unit verifies the tag's information against a database of authorized entries.
• Gate Activation: If the tag is authorized, the control unit sends a signal to open or enable the gate (e.g., a barrier arm, turnstile, or door lock). If the tag is unauthorized, access is denied, and an alarm might be triggered.
• Directional Detection and Anti-Collision: Advanced UHF gate controllers can detect the direction of movement (e.g., entering or exiting) and employ anti-collision algorithms to read multiple tags simultaneously, even in high-traffic scenarios. Some systems use additional sensors (like infrared) to improve accuracy and prevent "tailgating."

• Long Read Range: Typically able to read tags from several meters away, allowing for "hands-free" and "drive-through" access.
• High Reading Speed: Can quickly identify multiple tags in motion, reducing bottlenecks.
• Anti-Collision: Algorithms that allow the reader to differentiate and read multiple tags present in the field at the same time.
• Directional Sensing: Ability to determine if an item or person is entering or exiting the controlled area.
• Integration Capabilities: Often connect with other security or management systems via interfaces like Ethernet, RS232, RS485, or Wi-Fi.
• Robust Design: Many are built for industrial or outdoor environments, with resistance to dust and water.

• Vehicle Access Control: Managing entry and exit for parking lots, gated communities, corporate campuses, and toll roads. Vehicles can have tags on windshields, allowing for seamless, hands-free access.
• People Access Control: Controlling access to buildings, restricted areas, and for time and attendance tracking in offices, universities, hospitals, and event venues.
• Logistics and Warehouse Management: Monitoring the flow of goods, pallets, and containers in and out of warehouses, distribution centers, and production lines for inventory management, asset tracking, and theft prevention.
• Retail: Used at store exits for Electronic Article Surveillance (EAS) to prevent shoplifting, and for inventory tracking as items move in and out of the backroom.
• Libraries and Document Management: Tracking books, documents, and other assets as they enter or leave a facility.
• Manufacturing: Monitoring materials and finished products on production lines and at factory entrances/exits.