What is the working principle of the parking system loop sensor

The vehicle can go in and out of the parking lot smoothly every day. In addition to the equipment we usually see, the equipment, tickets, and sentry boxes we usually see. In fact, there is also a necessary equipment for parking lots. Others are less. Essence If there is no obscurity in the parking lot, and willing to work in the ground sensory coil where you work underground, the parking lot system will be very troublesome and even paralyzed.
 
         The ground sensory coil has a transmitting vehicle in the parking lot system to be triggered by signals. When the vehicle enters, the ground -sensing signal trigger, the parking lot system starts to run, the gate is opened, and the signal of the ground sensor coil is transmitted to the vehicle detector, which can be played by the signal of the coil to play, which can be used to play to play. Anti -smashing effect.

        So how does the ground coil have the principle of physical action with cars?
 
        The ground sense coil makes full use of the principle of magnetic field induction in physics. The ground sensor coil is a oscillating circuit. The multi -turning wire is buried on the surface arc -type groove to form an inductance coil and generates a magnetic field. The vehicle itself is metal iron. The vehicle entering the person, the principle of electromagnetic induction, and changing the magnetic flux in the coil, which causes changes in the electrochemical current, generates the logical operating relationship of current signal, current signal transmission of electrical control systems, and realizing the automation control of parking lots. The opening and closing of the field gate.