深圳国典智能科技 有限公司

How to avoid the influence of induction coil on Face detect barrier?

发表时间:2017-10-15 16:06

How to avoid the influence of induction coil on Face detect barrier?

facial recognition flap barrier, one of the channel management devices, is widely used in airports, subway stations, rail

Face detect turnstile

way stations, wharfs, scenic spots, parks and pedestrian walkways. It is an ideal management and grooming device for pedestrian high frequency access. The influence of the induction coil on the performance of the flap barrier turnstile is very important. Face recognition flap barrier coil shape and number of turns, unless the conditions are not allowed, the detection coil should be rectangular. The two long sides are perpendicular to the direction of the vehicle's movement, and the recommended distance to each other is 1 meter. The length of the long edge depends on the width of the road, usually at both ends of 0.5 m narrower than the width of the road. Face recognition flap barrier coil mainly by the coil material, the shape of the coil and whether the correct construction and buried three issues.


When the face recognition flap barrier is very close to the induction coil, the magnetic fields of the two coils are superimposed and interfere with each other. This phenomenon is the coil crosstalk. Face recognition flap barrier Crosstalk can lead to false detections and deadlocks on the loop detector. To avoid coil crosstalk we should:

1, Face recognition flap barrier with the same size of the different number of turns to change the operating frequency of the coil. It is generally recommended that one is 4 laps and the other is 6 laps.

recognition flap barrier

2, the face recognition adjacent to the increased barrier spacing. Must ensure that the spacing between the detection coil is greater than 3 meters.

3, the face recognition flap barrier coil leads a good shield, the shield must be grounded at the detector. Coil cables and connectors are best made of stranded copper wire. It is best not to have wiring between the cable and the connector.

Face recognition flap barrier coil installation essentials coil laying the first to use the road cutter to cut the groove on the road to 45 degrees in the four corner chamfer to prevent the sharp corners of the coil cable damage. When laying the cable, leave enough length to connect to the loop sensor and ensure that there is no connector in the middle. After winding the coil cable, route the cable through the lead-in slot. Since the sensitivity of the sensing coil decreases as the lead length increases, the length of the lead cable should be as short as possible.


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