The principle of parking lot vehicle detector and ground sense coil 1. Working principle The ground induction coil vehicle detector is a vehicle detector based on the principle of electromagnetic induction. It usually embeds a toroidal coil under the road subgrade of the same lane, and passes

The difference between AC motors and DC motors: In terms of structure, the principle of DC motors is relatively simple, but the structure is complex and difficult to maintain. The principle of an AC motor is complicated, but its structure is relatively simple, and it is easier to maintain than a DC