Vehicle Detection Loop Circuit

Vehicle detection loops or inductive loop traffic detectors can detect vehicles.

Vehicle detection loop circuit.

If the inductive loop is placed correctly it will detect vehicle open gate and keep it open until the vehicle clears the gate. Loops are used to stop or reverse a moving gate to allow free exit from or entrance to a site or as an arming loop to allow entrance. The electronics unit applies alternating current electrical energy onto the wire loops at frequencies between 10 khz to 200 khz. Vehicle detection loops called inductive loop traffic detectors can detect vehicles passing or arriving at a certain point for instance approaching a traffic light or in motorway traffic.

3 an oscillator circuit comprises a road loop 1 and a plurality of capacitors 2 arranged to be switched in circuit with the road loop 1 under the. Loop detectors are used in conjunction with vehicle detection loops to detect vehicular traffic traveling or stopping overhead in a roadway these are commonly used to trigger traffic lights and you have undoubtedly traveled over thousands of them without even realizing it. Is a block diagram of a vehicle detector circuit according to the invention for the induction loop vehicle detector description of the induction loop vehicle detector referring to fig. There is a misconception that inductive loop vehicle detection is based on metal mass.

An insulated electrically conducting loop is installed in the pavement.