On-line spectrum detection system for solving problems of window wall hanging and repeated reference collection

The embodiment of the invention provides an on-line spectrum detection system for solving the problems of window wall hanging and repeated reference collection. The on-line spectrum detection system comprises a detection channel; the window is arranged on the detection channel; the moving part is arranged in the detection channel; the driving mechanism is used for driving the moving part to move, the driving mechanism can drive the moving part to abut against the inner side wall of the window for cleaning, the moving part can serve as a reference plate when the window is in a clean state, and the window is arranged on the detection channel in the pipeline in the process of detecting liquid in the pipeline. According to the window cleaning device, the moving part is arranged in the pipeline, the driving mechanism used for driving the moving part to move is arranged, the driving mechanism can drive the moving part to start reciprocating motion, the moving part abuts against the inner side wall of the window, an