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Entrance barrier

  • US 8,416,056 B2
  • Filed: 11/06/2009
  • Issued: 04/09/2013
  • Est. Priority Date: 11/07/2008
  • Status: Active Grant
First Claim
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1. An entrance barrier comprising:

  • a first barrier element and a second barrier element each movable between an open position and a closed position;

    driving means for moving the first barrier element and the second barrier element between the open position and the closed position;

    a control unit for controlling the driving means; and

    a sensor unit connected to the control unit;

    a first capacitive sensor included in the sensor unit;

    a second capacitive sensor included in the sensor unit;

    a first half of each of the first capacitive sensor and the second capacitive sensor is included with the first barrier element; and

    a second half of each of the first capacitive sensor and the second capacitive sensor is included with the second barrier element;

    wherein capacitance is measured between the first half and the second half of each of the first capacitive sensor and the second capacitive sensor.

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