An automatic step cleaning device for a passenger conveyor and a passenger conveyor are disclosed. The automatic step cleaning device is provided for a passenger conveyor in which a step chain is in transmission connection with a drive chain to receive power from a drive portion for driving steps to operate, which includes: a base, arranged adjacent to a step that is in a flipped state during operation; a rotating shaft, mounted on the base and arranged in the drive chain to be driven to rotate synchronously with the step chain; and a first cleaning member, mounted on the rotating shaft and configured to perform a cleaning operation on the steps currently passing through the rotating shaft in a flipped state when the rotating shaft is driven to rotate.

The disclosure relates to a disinfecting device for disinfecting a movable surface of a passenger transport system. The disinfecting device has a housing with an interior and at least one radiation source arranged in the interior. The radiation source can emit germicidal electromagnetic radiation. The disinfecting device also has a device, arranged in the interior of the housing, and a radiation measurement sensor. The device is arranged between the radiation source and a radiation-transmissive side wall of the housing. The device allows sufficient detection by the radiation measurement sensor of a portion of the radiation emitted by the radiation source.