The invention discloses a data sampling device of a photoelectric
direct reading spectrograph. The data sampling device comprises an upper computer and a
data acquisition cabinet, wherein the
data acquisition cabinet is internally provided with a mother board, a high-
voltage power source board, a high-
voltage switch board, an element board, a measuring board and a
single chip microcomputer board; the mother board is fixedly arranged on a side board in the
data acquisition cabinet; the high-
voltage power source board, the high-voltage switch board, the element board, the measuring board and the
single chip microcomputer board are sequentially arranged in the data acquisition cabinet in parallel; the mother board is provided with
insertion holes corresponding to the high-voltage power source board, the high-voltage switch board, the element board, the measuring board and the
single chip microcomputer board; two ends of the
insertion holes are hinged with buckles, and the corresponding boards are inserted to the
insertion holes so that the insertion holes support against the corresponding boards; and the single
chip microcomputer board is used for storing a
control signal of the photoelectric
direct reading spectrograph and sending the
control signal to the high-voltage power source board, the high-voltage switch board, the element board and the measuring board through the mother board. The data sampling device has the advantages of simple structure, convenience in fault diagnosis and rapidness in replacement; and by using the data sampling device, the work efficiency is increased, and the detecting cost is reduced.