The inductive loop detection system is comprised of two elements, the electronic detector module and the inductive loop coil and lead-in cable. The detector oscillator circuit drives energy, 10 – 200KHz, through the loop wire creating an electromagnetic field.
Regard for the basic traffic pattern as it pertains to the area and the door or gate to be controlled is a must. Cross traffic in the area may unnecessarily open doors or gates if not taken into account. Loop placement can also be a means of vehicle speed control.
In order to have an inductive loop system operate as a reliable system, it is necessary to pay careful attention to the loop installation. The use of proper installation techniques can reduce unnecessary problems while increasing reliability.