| 摘要 |
A device for the detection of the passage of objects, persons or animals bearing a so-called RFID tag, the device including at least one first movable support bearing an antenna electrically connected to a tag reader and at least one second movable support, each of the movable supports forming, when idle, a barrier with respect to the passage of the objects, persons or animals, and which, on contact with these latter, is movable to a retracted position, the second movable support being arranged upstream of the first movable support with respect to the direction of passage of the objects, persons or animals and being made of a material attenuating the passage of the electromagnetic waves in the direction opposite to that of the passage of the objects, persons or animals. |
