Laser induced spectrum measuring apparatus having self-adjusting calibration function and control method

The invention relates to the laser induced spectrum measuring technology, in particular to a laser induced spectrum measuring apparatus having self-adjusting calibration function and a control method.The invention solves the problem that laser focus adjustment and fiber probe alignment are difficult to realize by the prior laser induced spectrum measuring apparatus. The measuring apparatus comprises a platform for placing articles to be measured, a spectrum collecting and analyzing assembly, a computer, an assistant light source assembly, an electronic control unit, a focus adjustment assembly, an angle adjusting assembly for the fiber probe, wherein the focus adjustment assembly comprises an optical amplifying lens group, a CCD image sensor and an electric elevator mechanism; the angle adjusting assembly for the fiber probe consists of electric control rotary apparatuses arranged for each fiber probe, respectively; the assistant light source assembly comprises an electric control constant flow source, a selective transflective lens and a frequency range calibration light source. The control method comprises a focus adjustment step and an angle adjusting step for the fiber probe.The measuring apparatus has the advantages of simple structure, favorable using effect, simple and reasonable control method and realization of laser focus adjustment and fiber probe alignment with high precision.