Fast door
As the main force supporting the automatic opening and closing function of fast doors, the geomagnetic induction system of fast doors has always played a primary role before the emergence of microwave radar systems. Its usage principle is to use the ground induction coil formed by the ground induction wire to generate a magnetic field. When the vehicle passes by the ground induction coil, the geomagnetic sensor transmits the signal to the frequency converter, prompting the door to open.
Generally, the distance between the ground induction coil and the rapid door body is three to five meters. According to the lifting speed of the rapid door of 0.6m/s, the vehicle can pass directly at a speed of 5km/h at a constant speed. There is no need to slow down deliberately at the door.
Some customers may ask the following question: If there is a car following situation in the workshop, when the vehicle in front passes through the rapid door, will the vehicle behind be hit by the falling rapid door?
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You can get rid of this worry, because during the process of following the car, the infrared anti-smashing system will play its role. When the vehicle in front passes through the door, the infrared rays are always cut off, and the door will not fall.
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