The invention relates to a processing machine (100), used for a working area (110) of autonomous processing. A processing machine comprises a detection unit (120) used for detecting corresponding surrounding parameters in the current, and the surrounding parameters can be analyzed and processed as to control the processing machine (100) in the arranged working area (110). The detection unit (120) is provided with a maintenance away device (15) which is constructed for reducing formation of liquor consensate of pollution and/or water vapour and/or detection unit (120) caused by operation during autonomous processing of the processing machine (100).