Vehicle loop Detector FAQ
Q1 :What is an inductive loop vehicle detector and how does it work? A1. The complete detector consists of a loop of wire and an electronic detection unit. The operation is based on the principle of metal detection. As an example, a metal detector has a movable “coil” (or loop) which is waved above a buried metal object, which disrupts the electrical field generated by the loop and causes the metal detector to respond with an output, usually an audible tone. With a vehicle detector, the loop is buried in the roadway and the object to be detected is a vehicle. When the loop detects the vehicle, the detector provides a relay switch closure output. Q2. How is the detection/loop system applied? A. When a set pattern of loops are buried on either side of a gate or door and connected to a vehicle detector, the system will detect the presence of a vehicle. This signal can be connected to operate the gate or door trigger. When properly programmed with the operator, the gate...
