Patent ID: 8262150

Claim:
Drive system for an entry/exit facility with at least one door, ramp, or tread of a passenger transport vehicle that is mounted at least one of pivotably and slidably, the drive system comprising: at least one actuator or drive motor and a mechanical system driven by at least one of said at least one actuator or drive motor and a gear unit for effecting pivoting or sliding movement of the door, ramp, or tread, with an absolute value encoder for acquiring a momentary position during the pivoting or sliding movement, and an evaluation unit, which is configured to compare a momentary position with at least one reference position stored in a non-volatile memory of the evaluation unit in order to generate an output signal dependent thereon, wherein the absolute value encoder is flange-connected to a pin that fixes the pivoting movement of the door, ramp, or tread, and the gear unit comprises a first reduction gear unit, a second reduction gear unit, and a controllable coupling is provided between the reduction gear units.