In any card access system, the reader will trigger a barrier gate to open upon flashing a valid card. But how to allow the barrier gate to automatically close after the car has passed through?
With the enhanced EWI loop detector (BRD05). If the loop coil having any changes of the inductance due to loop coil cable condition, road surface changes or any other unforeseen interference, EWI loop detector is safe and secure to function.
The loop detector is reliable and cannot be tempered easily as the main control is hidden inside the barrier ggate.
The loop detector is reliable and cannot be tampered with easily, as the main control is typically hidden inside the barrier gate.
Avoid arm hitting a car
A loop detector can also help to prevent the gates from closing too soon. When the vehicle is passing through, it will break the circuit and tell the gate to remain open, preventing it from closing on the car. When the barrier arm is descending, BRD05 will trigger the arm to auto-reverse if it detects another vehicle entering to avoid hitting it.
No human shall pass through barrier gate lane
BRD05 is a metal detector and cannot detect humans. BRD05 will not be able to trigger the barrier arm to descend if a human walk past through. To avoid this problem, another BRD01 can be installed to ensure there is a vehicle before activating the reader to accept card reading.
Cannot go in from the opposite direction
In some cases where there is no card access system, BRD05 can be used to automatically trigger the barrier gate to open upon detecting the presence of any vehicle. By installing the loop coil in 1 direction, you can effectively block any vehicle trying to enter from the other side.
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