Leonardo chooses Perle PoE Switches to power ALPR cameras

IDS Industrial Switches provide up to 30 Watts PoE to Elsag® Fixed Plate Hunter ALPR cameras mounted along highways, bridges, tunnels, and overpasses.

Perle PoE Industrial Ethernet Switches

PRINCETON, N.J. (Feb. 11, 2021) Automatic License Plate Recognition (ALPR) systems are used to assist in law enforcement, toll collection, and traffic data analysis. By mounting cameras along highways, bridges, tunnels, and overpasses, vehicle speed and license plates can be captured to automatically identify suspect vehicles or validate vehicles on roadways as part of an HOV lane or tolling program. Also, the data can be used to analyze traffic statistics, identify traffic patterns, or detect real-time anomalies, such as traffic jams, crashes, and other dangerous occurrences.

When Leonardo designed the Elsag® Fixed Plate Hunter ALPR System they had to ensure it would offer reliable and constant operation but, be customizable enough to meet unique installation requirements set by different customers and agencies. The ALPR system comprises advanced digital cameras connected to a Field Control Unit (FCU). Inside the FCU a powerful switch would be needed to manage all of the data transmission. Leonardo had five main requirements for the switch:

  1. able to provide up to 30 watts PoE to the attached cameras,
  2. have at least three ethernet ports,
  3. have output connections for Twisted-Pair Copper or SFP Fiber,
  4. be rugged enough to operate in -40°C to +75°C,
  5. be small enough to fit inside the FCU.
Diagram showing ALPR cameras powered by PoE Switches

Perle’s range of IDS PoE Industrial Switches fit the bill. They are all classified as Layer 2 Power Sourcing Equipment (PSE) and fully compliant to IEEE 802.3at to ensure reliable PoE to the attached cameras. Depending on the unique installation requirement, Leonardo can choose the variant with the necessary number of copper ports and fiber ports needed for each customer. And every component used in the design of these compact switches is fully tested and rated to operate in -40°F to +165°F.

Michael Hua, Engineer at Leonardo, comments, “The Elsag® Fixed Plate Hunter ALPR System reads plates day or night, in all weather conditions, and from all 50 U.S. states as well as most foreign countries.”

At Leonardo, we are dedicated to providing advanced ALPR technology to law enforcement agencies, parking authorities, toll operators, and access control organizations through our ELSAG ALPR product portfolio. Our innovative technology and system solutions are designed by ALPR experts to enhance patrol presence while adding a force multiplier that significantly improves operational efficiencies.

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