Water quality on-line analysis device based on ultraviolet spectrum method

The invention discloses a water quality on-line analysis device based on ultraviolet spectroscopy, which relates to the technical field of instrument science and technology, control science, environmental protection and applied chemistry, and comprises an automatic sampling dilution system, a spectral measurement system, a single chip microcomputer control system and a data transmission and on-line measurement system, the automatic sampling and diluting system comprises an automatic sampling unit and an automatic diluting unit; the automatic sampling unit and the automatic diluting unit are used for mixing and diluting sample liquid and distilled water; the spectrum measurement system is used for performing ultraviolet spectrum measurement on the mixed dilution liquid formed by the automatic sampling unit and the automatic dilution unit; the single-chip microcomputer control system is used for automatically controlling electrical apparatus elements and a valve body in the automatic sampling and diluting syste