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Access ControlOctober 15, 2024

Vehicle Detection Systems: Loops, Sensors, and Alternatives

Automatic gates need to know when vehicles are present. Here's how the different detection technologies work.

Vehicle detection is essential for automatic gate operation. It triggers the gate to open, ensures safe closure, and prevents the gate from closing on vehicles.

In-Ground Loop Detectors

How They Work

  • Wire loop buried in pavement
  • Creates electromagnetic field
  • Metal vehicle changes field
  • Detector senses change

Pros

  • Very reliable
  • Works with any vehicle
  • Affordable
  • Industry standard

Cons

  • Requires cutting pavement
  • Can fail if loop breaks
  • Difficult to relocate

Above-Ground Sensors

Infrared/Photobeam

  • Beam between posts
  • Vehicle breaks beam
  • Easy installation
  • Can be blocked by debris

Radar/Microwave

  • Detects moving vehicles
  • No pavement cutting
  • Easy to install
  • May have false triggers

Magnetometers

  • Detects metal mass
  • Surface mount possible
  • Battery or wired
  • Newer technology

Applications

Free Exit

  • Loop inside gate
  • Opens gate automatically
  • Convenient for residents

Safety/Shadow Loops

  • Prevents closing on vehicle
  • Required for safety
  • Under gate path

Vehicle Presence

  • Keeps gate open while vehicle present
  • Prevents closing too soon

Detection System Installation

Standard Gate Co installs all types of vehicle detection systems. Call (323) 488-GATE to discuss your needs.

Standard Gate Co - Gate Operators and Access Control

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