Patent ID: 7893811

Claim:
A method for automatically ascertaining the number of people or objects present in a gate, the method having the following steps: providing a gate having a door and a passage way, the door including one of a revolving door or a device equipped with rotating barrier arms; providing a plurality of weight sensors along said passage way, wherein the weight sensors are arranged at both sides of the door; detecting of weight data by the plurality of weight sensors; evaluating the detected weight data in order to ascertain the number of people or objects inside the passage way, wherein evaluating comprises ascertaining the number of people or objects by at least one of maximum values, dynamics, a number of detected centers of gravity, a position of the weight sensors which have detected certain weight data, and an order in which the weight sensors have detected the weight data; and automatically closing the door, wherein closing is controlled based on the weight data detected by the plurality of weight sensors.