Monitoring method and stationary unit for a motor-driven door

A monitoring method for a motor-driven door, wherein a stationary unit in communication with a door controller and a monitoring device mounted on the movable door communicate bidirectionally with one another, the monitoring device being supplied with electrical energy by a battery or accumulator or some other mobile power pack and comprising a waking device, a control device, at least one analyzer device and a transmitter/receiver, and wherein data and/or signals of at least one door safety sensor connected to the analyzer device are relayed to the stationary unit, and wherein the monitoring device is set by the stationary unit into a power-saving idle state, characterized in that a vibration sensor wakes the waking device when the vibration sensor detects a vibration caused by a door movement, and in that the waking device wakes the control device, which in turn wakes the transmitter/receiver and actively queries a stationary unit assigned individually to it as to whether the monitoring device must remain active or be switched back to the power-saving idle state.