One-way pass-through system with return block for use in buildings, and a corresponding building having a one-way pass-through system of this kind

One-way passage system (1) with a non-return barrier for use in buildings having the following features:

• an entrance door arrangement (2a) and offset from it an exit door arrangement (2b) are provided;
• first and second side wall arrangements (3a, 3b) are provided between the entrance door arrangement (2a) and the exit door arrangement (2b), thereby enclosing a passage area (4) between the entrance door arrangement (2a) and the exit door arrangement (2b);
• a sensor device (5) is provided which comprises a plurality of sensors (5a, 5b, 5c) and is configured to detect persons (10):
• a) in front of the entrance door arrangement (2a);
• b) in the passage area (4) and/or after the exit door arrangement (2b);
• a control device is provided which is configured to receive and analyze sensor data from the sensor device (5), the control device being further configured to enter a safety operating mode and to close the entrance door arrangement (2a) an analysis of the sensor data indicates that a person (10):
• a) is walking back in the passage area (4) toward the entrance door arrangement (2a);
• and/or
• b) is walking back towards the passage area (4) after the exit door arrangement (2b);
• an illumination device (20) is provided, which is arranged in the passage area (4) and which is configured to illuminate the passage area (4) in different colors;
• the control device is further configured to enter different operating modes, wherein the entrance door arrangement (2a) and the exit door arrangement (2b) are controlled accordingly by the control device depending on the operating mode, and wherein the control device is further configured to control the illumination device (20) such that it illuminates the passage area (4) with different colors depending on the operating mode of the control device.