The invention relates to an automatic door and method for controlling an automatic door (10), comprising a door controller unit (70) for controlling a door, acting on a door drive; further comprising a monitoring system (11) comprising at least two door sensors (12, 32) mounted on two opposite sides of the door, as seen in passage direction, where each of said sensors (12, 32) comprises a scanning unit (16, 36) that monitors a sensor safety area, where a safety signal is applied to the door controller unit upon detection of an object within the sensor safety areas of said sensors. According to the invention after a predefined timespan (TL) of no detection within said sensor safety areas of said sensors, the monitoring system (11) is set to a restricted mode in which at least one sensor safety area is set to a restricted area, where the safety signal is then provided upon detection of an object within the restricted area, where further, once a detection in the restricted area occurs, the monitoring system is set back to an unrestricted normal mode.

At least one leaf of this door is equipped with a detection device comprising a mechanical detection device and a contactless sensor each capable of detecting a presence. The control circuit board comprises a control unit for movement of each leaf and a diagnostic unit, while means transfer, from the detection device in the direction of the diagnostic unit and the control unit, a first item of information representative of the activation state of the mechanical device, and a second item of information representative of the activation state of the contactless sensor. The diagnostic unit can identify a malfunction at least of the contactless detection device, when the first item of information has an active value while the second item of information has an inactive value. The invention allows redundancy to improve the availability of the detection device, while performing predictive maintenance for the operator, in particular a malfunction of the contactless sensor.

An access door for a transport vehicle is disclosed herein. The access door includes a frame delimiting an opening, at least one leaf movable between an open position and a closed position, and a detection device including a mechanical detection device to detect pressure applied to the detection device and a contactless sensor to detect a presence in a vicinity of the detection device. The access door further includes a control circuit including a diagnostic unit, a control unit to control movement of the at least one leaf, and a transfer circuit to transfer items of information representative of an activation state of the mechanical detection device and the contactless sensor. The diagnostic unit can identify malfunctions of the mechanical detection device and the contactless sensor based on the items of information.