Door sensor device for installation on a door element that can turn about an axis of rotation (D), in particular a swing door, with - at least one transmitting device for generating at least one monitoring beam (S) in the direction of the floor and aligned at an angle to the door leaf plane (E) of the door element , - at least one receiving device for receiving reflected or back-scattered radiation and - an evaluation device for evaluating the radiation received by the receiving device and generating an object detection signal, - wherein the monitoring beam or beams (S) form(s) measuring points (Ml-Mn) on the floor , for which the evaluation device evaluates the received radiation, characterized in that - the evaluation device is designed in such a way that it checks whether a predefined exclusion condition is fulfilled, wherein the exclusion condition is dependent on at least three values, specifically - on an angle value specifying the respective rotational angle of the door element , - on a maximum value predefined for the evaluation device , which specifies a fixed predefined maximum permissible rotational angle of the door element , and - on a measuring-point-specific advance angle value, which specifies the angle between a line segment delimited by the respective measuring point (Ml-Mn) formed by the monitoring beam (S) on the floor and the axis of rotation (D) of the door element and the door leaf plane (E), - the evaluation device considers the exclusion condition to be fulfilled for those measuring points (Ml-Mn) for which the sum of the angles obtained from the angle value and the measuring-point-specific advance angle value reaches or exceeds the maximum value, - the evaluation device notionally displaces the height of the measuring points (Ml-Mn) for which the exclusion condition is fulfilled upwards from the floor , and - the evaluation device evaluates the received radiation with respect to the measuring point notionally displaced upwards from the floor . - at least one transmitting device for generating at least one monitoring beam (S) in the direction of the floor and aligned at an angle to the door leaf plane (E) of the door element , - at least one receiving device for receiving reflected or back-scattered radiation and - an evaluation device for evaluating the radiation received by the receiving device and generating an object detection signal, - wherein the monitoring beam or beams (S) form(s) measuring points (Ml-Mn) on the floor , for which the evaluation device evaluates the received radiation, - the evaluation device is designed in such a way that it checks whether a predefined exclusion condition is fulfilled, wherein the exclusion condition is dependent on at least three values, specifically - on an angle value specifying the respective rotational angle of the door element , - on a maximum value predefined for the evaluation device , which specifies a fixed predefined maximum permissible rotational angle of the door element , and - on a measuring-point-specific advance angle value, which specifies the angle between a line segment delimited by the respective measuring point (Ml-Mn) formed by the monitoring beam (S) on the floor and the axis of rotation (D) of the door element and the door leaf plane (E), - the evaluation device considers the exclusion condition to be fulfilled for those measuring points (Ml-Mn) for which the sum of the angles obtained from the angle value and the measuring-point-specific advance angle value reaches or exceeds the maximum value, - the evaluation device notionally displaces the height of the measuring points (Ml-Mn) for which the exclusion condition is fulfilled upwards from the floor , and - the evaluation device evaluates the received radiation with respect to the measuring point notionally displaced upwards from the floor . <EOS>